LEHMAN BROTHERS INSTITUTIONAL FUNDS GROUP TRUST
485BPOS, 1994-06-01
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As filed with the Securities and Exchange Commission on May 27, 1994
					        Securities Act File No.  33-55034
					Investment Company Act File No.  811-7364
= = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = 

SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
___________________

FORM N-1A

REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933		/X/

	Pre-Effective Amendment No.    ____					/_/

	Post-Effective Amendment No.    5  					/X/

and/or

REGISTRATION STATEMENT UNDER THE INVESTMENT COMPANY ACT OF 1940	/X/

	Amendment No.   10  							/X/

Lehman Brothers Institutional Funds Group Trust
(Exact Name of Registrant as Specified in Charter)

	One Exchange Place
	Boston, Massachusetts  						02109
	(Address of Principal Executive Offices)			(Zip Code)

Registrant's Telephone Number, including Area Code:	(617) 248-3490

Patricia L. Bickimer, Esq.
The Shareholder Services Group, Inc.
One Exchange Place
Boston, Massachusetts 02109
(Name and Address of Agent for Service)

Copies to:

Burton M. Leibert, Esq.
Willkie Farr & Gallagher
One Citicorp Center
153 East 53rd Street
New York, New York 10022

	It is proposed that this filing will become effective 
	(check appropriate box):

	  X  immediately upon filing pursuant to paragraph (b), or
	_____on_________pursuant to paragraph (b)
	     60 days after filing pursuant to paragraph (a), or
	_____on_________pursuant to paragraph (a) of Rule 485

												
The Registrant has previously filed a declaration of indefinite registration 
of its shares pursuant to Rule 24f-2 under the Investment Company Act of 1940, 
as amended. Registrant's Rule 24f-2 Notice for the fiscal year ended January 
31, 1994 was filed on March 29, 1994

Page 1 of____Pages

LEHMAN BROTHERS INSTITUTIONAL FUNDS GROUP TRUST
FORM N-1A
CROSS REFERENCE SHEET
PURSUANT TO RULE 495(a)

Part A
Item No.	Prospectus Heading


1. Cover Page		Cover Page

2. Synopsis		Background and Expense
			Information; Performance 		Information

3. Condensed Financial
	Information...............................	Financial Highlights


4. General Description of
	Registrant		Cover Page; Investment
			Objective and Policies;
			Description of Shares

5. Management of the Fund		Management of the Fund;
			Dividends

6. Capital Stock and Other
	Securities		Cover Page; Dividends; 
			Taxes; Description of 
			Shares

7. Purchase of Securities		Purchase and Redemption 
			of Shares; Management
			of the Fund

8. Redemption or Repurchase		Purchase and Redemption 
			of Shares

9. Legal Proceedings		Not Applicable




Part B	Heading in Statement
Item No.	of Additional Information

10. Cover Page		Cover Page

11. Table of Contents		Table of Contents

12. General Information and
	 History		The Trust; Management of
			the Fund;

13. Investment Objectives and
	 Policies		Investment Objective and
			Policies

14. Management of the Fund		Management of the Fund

15. Control Persons and Principal
	 Holders of Securities		Management of the Fund

16. Investment Advisory and
	 Other Services		Management of the Fund

17. Brokerage Allocation		Investment Objective and
			Policies

18. Capital Stock and Other		Additional Information
	 Securities		Concerning Fund Shares;
			Dividends

19. Purchase, Redemption and		Additional Purchase and
	 Pricing of Securities		Redemption Information
	 Being Offered

20. Tax Status		Additional Information
			Concerning Taxes

21. Underwriters		Management of the Funds

22. Calculation of Performance		Additional Yield
			Information

23. Financial Statements		Financial Statements





	Prospectuses each dated February 21, 1994 for the Floating Rate U.S. 
Government Fund and the Short Duration U.S. Government Fund are not included 
in this filing.

	Part A (the Prospectuses each dated February 21, 1994) and Part B (the 
Financial Statements for the Trust's fiscal year ended January 31, 1994) of 
Form N-1A are incorporated herein by reference to the Registrant's filing of 
definitive copies of the Prospectus and Statement of Additional Information 
pursuant to Rule 497(c) and Rule 30b2-1, respectively.


<PAGE>
PROSPECTUS
                           TAX-FREE MONEY MARKET FUND
 
                       An Investment Portfolio Offered By
                Lehman Brothers Institutional Funds Group Trust
 
   
    Lehman  Brothers Institutional Funds Group Trust (the "Trust") is a no-
load,
open-end, management investment company. The shares described in this 
Prospectus
represent interests in the  Tax-Free Money Market  Fund portfolio (the  
"Fund"),
one of a family of money market portfolios of the Trust.
    
    The Fund's investment objective is to provide investors with as high a 
level
of  current income exempt from federal income tax as is consistent with 
relative
stability of principal.  The Fund  invests substantially  all of  its assets  
in
short-term  tax-exempt  obligations issued  by state  and local  governments 
and
tax-exempt derivative securities.
 
    Fund shares may not be purchased by individuals directly, but  
institutional
investors  may purchase shares for accounts  maintained by individuals. The 
Fund
currently offers  three  classes of  shares.  In  addition to  Class  A  
shares,
institutional  investors may  purchase on behalf  of their customers  Class B 
or
Class C shares which accrue daily dividends in the same manner as Class A 
shares
but bear all  fees payable by  the Fund to  institutional investors for  
certain
services  they provide to the beneficial  owners of such shares. See 
"Management
of the Fund--Service Organizations."
 
   
    AN INVESTMENT IN  THE FUND  IS NEITHER INSURED  NOR GUARANTEED  BY THE  
U.S.
GOVERNMENT. THERE CAN BE NO ASSURANCE THAT THE FUND WILL BE ABLE TO MAINTAIN 
ITS
NET ASSET VALUE OF $1.00 PER SHARE.
    
   
    LEHMAN  BROTHERS, INC.  ("Lehman Brothers")  sponsors the  Fund and  acts 
as
Distributor of its shares. LEHMAN  BROTHERS GLOBAL ASSET MANAGEMENT INC.  
serves
as the Fund's Investment Adviser.
    
 
   
    The  address of the Fund is One Exchange Place, Boston, Massachusetts 
02109.
The Fund can be  contacted as follows: for  purchase and redemption orders  
only
call  1-800-851-3134; for yield information  call 1-800-238-2560 (Class A 
shares
code: 008;  Class B  shares code:  108; Class  C shares  code: 208);  for  
other
information call 1-800-368-5556.
    
   
    This  Prospectus briefly sets forth certain  information about the Fund 
that
investors should  know before  investing.  Investors are  advised to  read  
this
Prospectus  and retain it for future reference. Additional information about 
the
Fund, contained in a Statement of Additional Information dated May __, 1994,  
as
amended  or supplemented from time  to time, has been  filed with the 
Securities
and Exchange Commission and is available to investors without charge by  
calling
the   Fund's  Distributor   at  1-800-368-5556.  The   Statement  of  
Additional
Information is incorporated in its entirety by reference into this Prospectus.
    
 
   
    SHARES OF THE  FUND ARE  NOT DEPOSITS OR  OBLIGATIONS OF,  OR GUARANTEED  
OR
ENDORSED  BY, ANY BANK, AND SUCH SHARES ARE NOT FEDERALLY INSURED BY THE 
FEDERAL
DEPOSIT INSURANCE CORPORATION, THE FEDERAL RESERVE BOARD OR ANY OTHER 
GOVERNMENT
AGENCY. SHARES  OF THE  FUND  INVOLVE CERTAIN  INVESTMENT RISKS,  INCLUDING  
THE
POSSIBLE LOSS OF PRINCIPAL.
    
                           --------------------------
 
THESE  SECURITIES HAVE  NOT BEEN APPROVED  OR DISAPPROVED BY  THE SECURITIES 
AND
  EXCHANGE  COMMISSION  OR  ANY  STATE  SECURITIES  COMMISSION  NOR  HAS   THE
     SECURITIES  AND EXCHANGE COMMISSION OR ANY STATE SECURITIES COMMISSION
       PASSED UPON  THE  ACCURACY OR  ADEQUACY  OF THIS  PROSPECTUS.  ANY
             REPRESENTATION TO THE CONTRARY IS A CRIMINAL OFFENSE.
                           --------------------------
 
                                LEHMAN BROTHERS
 
   
May __, 1994
    
<PAGE>
                       BACKGROUND AND EXPENSE INFORMATION
 
   
    The  following Expense Summary lists the costs and expenses that an 
investor
in the Fund can  expect to incur  during the Fund's  current fiscal year  
ending
January  31, 1995. The Fund  offers three separate classes  of shares. Shares 
of
each class represent  equal, pro  rata interests in  the Fund  and accrue  
daily
dividends  in the same  manner except that the  Class B and  Class C shares 
bear
fees payable by the Fund (at the rate of .25% and .35% per annum,  
respectively)
to  institutions  for services  they provide  to the  beneficial owners  of 
such
shares. See "Management of the Fund--Service Organizations."
    
 
EXPENSE SUMMARY
 
   
<TABLE>
<CAPTION>
                                        CLASS A CLASS B CLASS C
                                        SHARES  SHARES  SHARES
                                        ------- ------- -------
<S>                                     <C>     <C>     <C>
ANNUAL FUND OPERATING EXPENSES
 (as a percentage of average net assets)
    Advisory Fees (net of applicable fee
     waivers)...........................  0.08%*  0.08%*  0.08%*
    Rule 12b-1 fees.....................  none    .25%    .35%
    Other Expenses -- including
     Administration Fees
     (net of applicable fee waivers)....  0.08%*  0.08%*  0.08%*
                                        ------- ------- -------
    Total Fund Operating Expenses (after
     expense reimbursement)*............   .16%   .41%    .51%
                                        ------- ------- -------
                                        ------- ------- -------
<FN>
------------------------
* The Expense Summary above has  been restated to reflect the Fund's  
Investment
  Adviser's  and Administrator's voluntary  reimbursement arrangements in 
effect
  for the Fund's fiscal year ending January  31, 1995. With respect to Class  
A,
  Class  B and  Class C shares  for the month  of January, 1995,  the Total 
Fund
  Operating Expenses including reimbursement of  expenses are anticipated to  
be
  .18%, .43% and .53%, respectively.
</TABLE>
    
 
   
    In  order to  maintain a competitive  expense ratio during  1994, the 
Fund's
Investment Adviser and  Administrator have voluntarily  agreed to reimburse  
the
Fund  if and  to the  extent that  total operating  expenses (other  than 
taxes,
interest, brokerage  fees and  commissions, Rule  12b-1 fees  and  
extraordinary
expenses) exceed .16% of average daily net assets through December 31, 1994. 
For
the years 1995-1997, the Investment Adviser and Administrator intend to 
continue
voluntarily  to  reimburse  the Fund  to  the  extent necessary  to  maintain 
an
annualized expense ratio at a  level no greater than  .18% of average daily  
net
assets.  The voluntary  reimbursement arrangements  described above  will not 
be
changed unless investors  are provided  at least  60 days'  advance notice.  
The
maximum   annual  contractual  fees  payable   to  the  Investment  Adviser  
and
Administrator total .20% of  average daily net  assets. Absent reimbursement  
of
expenses,  the Total  Fund Operating Expenses  of Class  A, Class B  and Class 
C
would be .26%,  .51% and  .61%, respectively, of  the Funds'  average daily  
net
assets.
    
---------
   
EXAMPLE:  An investor would  pay the following expenses  on a $1,000 
investment,
assuming (1) a  5% annual  return and  (2) redemption at  the end  of each  
time
period with respect to the following shares:
    
 
   
<TABLE>
<CAPTION>
                    1 YEAR  3 YEARS  5 YEARS  10 YEARS
                    ------- -------- -------- --------
<S>                 <C>     <C>      <C>      <C>
Class A shares:.....    $2     $ 5      $ 9      $20
Class B shares:.....    $4     $13      $23      $52
Class C shares:.....    $5     $16      $29      $64
</TABLE>
    
 
                                       2
<PAGE>
   
THE  FOREGOING SHOULD NOT BE CONSIDERED  A REPRESENTATION OF ACTUAL EXPENSES 
AND
RATES OF RETURN, WHICH MAY BE GREATER OR LESSER THAN THOSE SHOWN.
    
 
    The purpose of the foregoing table is to assist an investor in 
understanding
the various costs and expenses that an  investor in the Fund will bear  
directly
or  indirectly. Certain Service Organizations (as defined below) also may 
charge
their clients fees in connection with investments in Fund shares, which fees 
are
not reflected in the table. For more complete descriptions of the various  
costs
and  expenses, see "Management of the Fund" in this Prospectus and the 
Statement
of Additional Information.
 
   
                              FINANCIAL HIGHLIGHTS
    
 
   
    The following financial  highlights for  the fiscal year  ended January  
31,
1994  is derived from the Fund's Financial  Statements audited by Ernst & 
Young,
independent accountants. This information should be read in conjunction with 
the
financial  statements  and  notes  thereto  that  appear  in  the  Statement  
of
Additional Information.
    
 
   
TAX-FREE MONEY MARKET FUND
    
 
   
<TABLE>
<CAPTION>
                                             PERIOD ENDED
                                               1/31/94*
                                             -------------
<S>                                          <C>
Net asset value, beginning of period.........       $1.00
Net investment income(1).....................      0.0228
Dividends from net investment income.........     (0.0228)
Net asset value, end of period...............       $1.00
Total return(2)..............................        2.30%
Ratios to average net assets/supplemental
 data:
Net assets, end of period (in 000's).........     $59,735
Ratio of net investment income to average net
 assets(3)...................................        2.38%
Ratio of net operating expenses to average
 net assets(3)(4)............................        0.11%
<FN>
------------------------
 *    The  Tax-Free Money  Market Fund  Class A  Shares commenced  operations 
on
      February 8, 1993.
(1)   Net investment income  before waiver  of fees by  the Investment  
Adviser,
      Administrator, Custodian and Transfer Agent and expenses reimbursed by 
the
      Investment Adviser and Administrator was $0.0093.
(2)   Total return represents aggregate total return for the period indicated.
(3)   Annualized.
(4)   Annualized  expense ratio before waiver of fees by the Investment 
Adviser,
      Administrator, Custodian and Transfer Agent and expenses reimbursed by 
the
      Investment Adviser and Administrator for the fiscal year ended January 
31,
      1994 was 1.52% and for the period ended July 31, 1993 was 6.26%.
</TABLE>
    
 
                                       3
<PAGE>
                       INVESTMENT OBJECTIVE AND POLICIES
 
IN GENERAL
 
    The Fund's investment objective is to provide investors with as high a 
level
of current income exempt from federal income tax as is consistent with  
relative
stability of principal.
 
    In  pursuing  its  investment  objective,  the  Fund,  which  operates  as 
a
diversified investment company,  invests substantially  all of its  assets in  
a
diversified  portfolio  of short-term  tax-exempt  obligations issued  by  or 
on
behalf of states, territories and possessions of the United States, the 
District
of Columbia, and their  respective authorities, agencies, instrumentalities  
and
political  subdivisions  and  tax-exempt derivative  securities  such  as 
tender
option bonds,  participations, beneficial  interests in  trusts and  
partnership
interests  (collectively "Municipal  Obligations"). The Fund  will not 
knowingly
purchase securities the  interest on  which is  subject to  federal income  
tax.
Although  it has no present intent to do  so, however, the Fund may invest up 
to
20% of its  assets in securities  the income from  which may be  a specific  
tax
preference item for purposes of the federal individual and corporate 
alternative
minimum tax. See "Taxes."
 
   
    Opinions  relating  to  the validity  of  Municipal Obligations  and  to 
the
exemption of  interest thereon  from federal  income tax  are rendered  by  
bond
counsel to the respective issuers at the time of issuance, and opinions 
relating
to  the validity of and  the tax-exempt status of  payments received by the 
Fund
from tax-exempt derivative securities are rendered by counsel to the  
respective
sponsors  of such securities. The  Fund and its Investment  Adviser will rely 
on
such opinions  and  will not  review  independently the  underlying  
proceedings
relating  to  the  issuance  of  Municipal  Obligations,  the  creation  of  
any
tax-exempt derivative securities or the bases for such opinions.
    
 
   
    PORTFOLIO  QUALITY  AND  DIVERSIFICATION.    The  Fund  will  purchase  
only
Municipal  Obligations which are "First Tier Eligible Securities" (as defined 
by
the Securities and Exchange Commission)  and which present minimal credit  
risks
as  determined by the Investment Adviser  pursuant to guidelines approved by 
the
Trust's Board  of  Trustees.  First  Tier Eligible  Securities  consist  of  
(i)
securities  that either (a) have short-term debt ratings at the time of 
purchase
within the  highest  rating  category  assigned by  at  least  two  
unaffiliated
nationally  recognized statistical rating organizations ("NRSROs") (or one 
NRSRO
if the security was rated by only one NRSRO), or (b) are issued by issuers  
with
such ratings, and (ii) certain securities that are unrated (including 
securities
of issuers that have long-term but not short-term ratings) but are of 
comparable
quality  as determined by  the Investment Adviser  and/or sub-Investment 
Adviser
pursuant to guidelines approved by the  Trust's Board of Trustees. The  
Appendix
to  the Statement of Additional Information includes a description of 
applicable
NRSRO ratings.
    
 
    Except  during   temporary  defensive   periods,   the  Fund   will   
invest
substantially  all,  but in  no  event less  than 80%,  of  its total  assets 
in
obligations the  interest  on which  is  exempt  from federal  income  tax  
with
remaining maturities of thirteen months or less as determined in accordance 
with
the  rules  of the  Securities  and Exchange  Commission.  The Fund  maintains 
a
dollar-weighted average portfolio maturity of 90 days or less. The Fund may 
hold
uninvested cash reserves pending investment, during temporary defensive 
periods,
including when  suitable tax-exempt  obligations are  unavailable. There  is  
no
percentage  limitation on  the amount  of assets  which may  be held 
uninvested.
Uninvested cash reserves will not earn income.
 
                                       4
<PAGE>
   
INVESTMENT LIMITATIONS
    
   
    There can  be  no  assurance  that the  Fund  will  achieve  its  
investment
objective.  The investment limitations enumerated below and the Fund's policy 
of
investing at least 80% of its total assets in obligations the interest on  
which
is  exempt from federal income tax are fundamental and may not be changed by 
the
Trust's Board  of Trustees  without the  affirmative vote  of the  holders of  
a
majority  of the Fund's outstanding shares.  The Fund's investment objective 
and
other investment  policies  described above  may  be  changed by  the  Board  
of
Trustees  at  any  time. If  there  is  a change  in  the  investment 
objective,
investors should consider whether the Fund remains an appropriate investment  
in
light  of their then current  financial position and needs.  (A complete list 
of
the investment limitations that cannot be changed without a vote of investors 
is
contained in the Statement of Additional Information under "Investment 
Objective
and Policies.")
    
 
    The Fund may not:
 
   
        1.  Borrow money  except from banks for  temporary purposes and then  
in
    amounts  not in excess of 10% of the  value of the Fund's assets at the 
time
    of such borrowing; or mortgage, pledge  or hypothecate any assets except  
in
    connection  with any  such borrowing  and in  amounts not  in excess  of 
the
    lesser of the  dollar amounts borrowed  or 10%  of the value  of the  
Fund's
    total  assets at the time of such borrowing. Additional investments will 
not
    be made when borrowings exceed 5% of the Fund's assets.
    
 
        2.  Purchase any securities which would  cause 25% or more of the  
value
    of its total assets at the time of purchase to be invested in the 
securities
    of  issuers  conducting  their  principal business  activities  in  the 
same
    industry, provided that there is  no limitation with respect to  
investments
    in U.S. government securities.
 
        3.  Purchase the securities of any issuer if as a result more than 5% 
of
    the  value of the Fund's assets would  be invested in the securities of 
such
    issuer except  that up  to 25%  of the  value of  the Fund's  assets may  
be
    invested  without regard  to this 5%  limitation, provided that  there is 
no
    limitation with respect to investments in U.S. government securities.
 
TYPES OF MUNICIPAL OBLIGATIONS
 
    The two principal classifications of Municipal Obligations which may be 
held
by the  Fund  are  "general obligation"  securities  and  "revenue"  
securities.
General  obligation securities  are secured by  the issuer's pledge  of its 
full
faith, credit  and taxing  power  for the  payment  of principal  and  
interest.
Revenue  securities are payable only from the revenues derived from a 
particular
facility or  class of  facilities or,  in some  cases, from  the proceeds  of  
a
special  excise tax  or other specific  revenue source  such as the  user of 
the
facility being financed. Revenue securities include private activity bonds 
which
are not payable from the unrestricted revenues of the issuer. Consequently,  
the
credit  quality of  private activity  bonds is  usually directly  related to 
the
credit standing of the corporate user of the facility involved.
 
    The Tax Reform  Act of 1986  substantially revised provisions  of prior  
law
affecting  the issuance and use of proceeds of certain tax-exempt obligations. 
A
new definition of  private activity bonds  was applied to  many types of  
bonds,
including  those  which  were  industrial  development  bonds  under  prior 
law.
Interest on private activity bonds is  tax-exempt only if the bonds fall  
within
certain  defined categories  of qualified  private activity  bonds and  meet 
the
requirements specified in those respective categories. The Act generally did 
not
change the tax treatment of bonds issued to finance governmental operations. 
The
changes generally apply to bonds issued after
 
                                       5
<PAGE>
August 15, 1986,  with certain  transitional rule  exemptions. As  used in  
this
Prospectus,   the  term  "private  activity   bonds"  also  includes  
industrial
development revenue bonds issued pursuant to the Internal Revenue Code of  
1986,
as amended.
 
    The  Fund's portfolio may  also include "moral  obligation" bonds, which 
are
normally issued by special  purpose public authorities. If  the issuer of  
moral
obligation  bonds is  unable to meet  its debt service  obligations from 
current
revenues, it may draw  on a reserve  fund, the restoration of  which is a  
moral
commitment but not a legal obligation of the state or municipality which 
created
the issuer.
 
OTHER INVESTMENT PRACTICES
 
   
    Municipal Obligations purchased by the Fund may include variable rate 
demand
notes.  Such notes may not be rated by credit rating agencies, but unrated 
notes
purchased by the Fund will be determined by the Fund's Investment Adviser to  
be
of  comparable quality at the time  of purchase to rated instruments 
purchasable
by the Fund.  Where necessary to  ensure that a  note is a  First Tier  
Eligible
Security,  the  Fund  will  require  that the  issuer's  obligation  to  pay 
the
principal of the note be backed by an conditional bank letter or line of 
credit,
guarantee or commitment to lend. While  there may be no active secondary  
market
with  respect to a particular  variable rate demand note  purchased by the 
Fund,
the Fund may,  upon the  notice specified  in the  note, demand  payment of  
the
principal  of the  note at  any time or  during specified  periods not 
exceeding
thirteen months, depending upon the instrument involved, and may resell the 
note
at any time to a  third party. The absence of  such an active secondary  
market,
however,  could, in some instances, make it difficult for the Fund to dispose 
of
a variable  rate demand  note  if the  issuer were  to  default on  its  
payment
obligation  or during  periods that  the Fund  is not  entitled to  exercise 
its
demand rights, and the Fund could, for  this or other reasons, suffer a loss  
to
the  extent of  the default.  While, in  general, the  Fund will  invest only 
in
securities that mature within thirteen months  of purchase, the Fund may  
invest
in  variable  rate  demand notes  which  have  nominal maturities  in  excess 
of
thirteen months,  if such  instruments carry  demand features  that comply  
with
conditions established by the Securities and Exchange Commission.
    
 
    The  Fund may also purchase Municipal  Obligations on a "when-issued" 
basis.
When-issued securities are securities purchased  for delivery beyond the  
normal
settlement date at a stated price and yield. The Fund will generally not pay 
for
such  securities  or start  earning interest  on them  until they  are 
received.
Securities purchased on  a when-issued basis  are recorded as  an asset and  
are
subject  to changes in value based upon changes in the general level of 
interest
rates. The Fund expects that commitments to purchase when-issued securities 
will
not exceed  25%  of  the  value  of  its  total  assets  absent  unusual  
market
conditions.  The Fund  does not  intend to  purchase when-issued  securities 
for
speculative purposes but only in furtherance of its investment objective.
 
    In addition, the  Fund may  acquire "stand-by commitments"  with respect  
to
Municipal  Obligations held  in its  portfolio. Under  a stand-by  commitment, 
a
dealer would  agree  to  purchase  at  the  Fund's  option  specified  
Municipal
Obligations  at a  specified price. The  Fund will  acquire stand-by 
commitments
solely to facilitate  portfolio liquidity and  does not intend  to exercise  
its
rights thereunder for trading purposes.
 
    Although  the  Fund  may invest  more  than 25%  of  its net  assets  in 
(i)
Municipal Obligations whose  issuers are in  the same state  and (ii)  
Municipal
Obligations  the  interest on  which  is paid  solely  from revenues  of 
similar
projects, it does  not presently  intend to  do so on  a regular  basis. To  
the
extent  the Fund's  assets are  concentrated in  Municipal Obligations  that 
are
payable from the revenues of similar projects, are issued by issuers located  
in
 
                                       6
<PAGE>
   
the  same state or are  private activity bonds, the Fund  will be subject to 
the
peculiar risks presented by  the laws and economic  conditions relating to  
such
states,  projects and bonds to  a greater extent than it  would be if its 
assets
were not so concentrated.
    
 
   
    The Fund  may  purchase tender  option  bonds. A  tender  option bond  is  
a
municipal obligation (generally held pursuant to a custodial arrangement) 
having
a  relatively long maturity  and bearing interest at  a fixed rate 
substantially
higher than prevailing short-term tax exempt  rates, that has been coupled  
with
the agreement of a third party, such as a bank, broker-dealer or other 
financial
institution,  pursuant to which such institution grants the security holders 
the
option, at periodic intervals, to tender their securities to the institution 
and
receive the face value thereof. As  consideration for providing the option,  
the
financial institution receives periodic fees equal to the difference between 
the
municipal  obligation's  fixed coupon  rate  and the  rate,  as determined  by 
a
remarketing or similar agent  at or near the  commencement of such period,  
that
would  cause the securities, coupled with the tender option, to trade at or 
near
par on the  date of such  determination. Thus,  after payment of  this fee,  
the
security holder effectively holds a demand obligation that bears interest at 
the
prevailing  short-term  tax  exempt  rate. The  Fund's  Investment  Adviser 
will
consider on  an  ongoing  basis  the  creditworthiness  of  the  issuer  of  
the
underlying  municipal  obligation,  of  any custodian  and  of  the  third 
party
provider of  the tender  option. In  certain instances  and for  certain  
tender
option  bonds, the option may be terminable in the event of a default in 
payment
of principal or interest on the  underlying municipal obligations and for  
other
reasons.  Additionally, the  above description of  tender option  bonds is 
meant
only to provide an  example of one possible  structure of such obligations,  
and
the  Fund may  purchase tender option  bonds with different  types of 
ownership,
payment, credit, and/or liquidity arrangement.
    
 
    The Fund  may acquire  custodial receipts  or certificates  underwritten  
by
securities dealers or banks that evidence ownership of future interest 
payments,
principal payments or both, on certain municipal obligations. The underwriter 
of
these  certificates or  receipts typically  purchases municipal  obligations 
and
deposits the obligations  in an irrevocable  trust or custodial  account with  
a
custodian  bank,  which  then  issues  receipts  or  certificates  that 
evidence
ownership of  the periodic  unmatured coupon  payments and  the final  
principal
payment on the obligations. Although under the terms of a custodial receipt, 
the
Fund  would be  typically authorized to  assert its rights  directly against 
the
issuer of  the underlying  obligation,  the Fund  could  be required  to  
assert
through  the custodian  bank those  rights as  may exist  against the 
underlying
issuer. Thus, in the event the  underlying issuer fails to pay principal  
and/or
interest  when due, the Fund  may be subject to  delays, expenses and risks 
that
are greater than those that would have been involved if the Fund had purchased 
a
direct obligation of the  issuer. In addition,  in the event  that the trust  
or
custodial  account  in  which  the underlying  security  has  been  deposited 
is
determined  to  be  an  association  taxable  as  a  corporation  instead  of  
a
non-taxable  entity, the  yield on the  underlying security would  be reduced 
in
recognition of any taxes paid.
 
   
    The Fund may purchase  from financial institutions tax-exempt  
participation
interests  in Municipal Obligations. A participation  interest gives the Fund 
an
undivided interest in the Municipal Obligation in the proportion that the 
Fund's
participation interest bears to  the total amount  of the Municipal  
Obligation.
These  instruments  may have  floating  or variable  rates  of interest.  If 
the
participation interest is unrated, it will be backed by an irrevocable letter 
of
credit or guarantee of a bank that the Trust's Board of Trustees has  
determined
meets  certain quality  standards or  the payment  obligation otherwise  will 
be
collateralized by  obligations  of the  U.S.  government and  its  agencies  
and
instrumentalities.  The  Fund  will  have the  right,  with  respect  to 
certain
participation
    
 
                                       7
<PAGE>
interests, to demand payment, on a specified number of days' notice, for all  
or
any  part  of the  Fund's  interest in  the  Municipal Obligation,  plus 
accrued
interest. The  Fund  will  invest  no  more than  5%  of  its  total  assets  
in
participation interests.
 
   
    The  Fund will not knowingly invest more than  10% of the value of its 
total
net assets in  illiquid securities,  including securities that  are illiquid  
by
virtue  of the  absence of  a readily available  market or  legal or 
contractual
restrictions on resale. Securities that  have legal or contractual  
restrictions
on  resale  but have  a readily  available  market are  not deemed  illiquid 
for
purposes of  this limitation.  The Fund's  Investment Adviser  will monitor  
the
liquidity  of such restricted  securities under the supervision  of the Board 
of
Trustees. See  "Investment Objective  and Policies--Additional  Information  
and
Investment  Practices--Illiquid  Securities"  in  the  Statement  of  
Additional
Information.
    
 
    The value  of  the Fund's  portfolio  securities  can be  expected  to  
vary
inversely with changes in prevailing interest rates.
 
                       PURCHASE AND REDEMPTION OF SHARES
 
PURCHASE PROCEDURES
 
   
    Shares  of the Fund  are sold at the  net asset value per  share of the 
Fund
next determined  after receipt  of  a purchase  order  by Lehman  Brothers,  
the
Distributor of the Fund's shares. Purchase orders for shares are accepted by 
the
Fund  only on days on which both Lehman Brothers and the Federal Reserve Bank 
of
Boston are  open for  business and  must be  transmitted to  Lehman Brothers  
by
telephone  at  1-800-851-3134. Orders  received before  noon, Eastern  time, 
for
which payment  has  been received  by  Boston  Safe Deposit  and  Trust  
Company
("Boston Safe"), the Fund's Custodian, will be executed at noon. Orders 
received
prior  to noon for which payment is received between noon and 4:00 P.M., 
Eastern
time, will be executed at 4:00 P.M.  Orders received after noon, and orders  
for
which  payment has  not been received  by 4:00  P.M., Eastern time,  will not 
be
accepted and notice thereof will be given to the institution placing the  
order.
Payment  for Fund shares may be made only in federal funds immediately 
available
to Boston Safe. (Payment for orders which are not received or accepted by 
Lehman
Brothers will be returned after prompt inquiry to the sending institution.)  
The
Fund may in its discretion reject any order for shares.
    
 
   
    The minimum aggregate initial investment by an institution in the 
investment
portfolios  that comprise the  Trust is $1  million (with not  less than 
$25,000
invested in  any  one  investment  portfolio offered  by  the  Trust);  
however,
broker-dealers  and other institutional  investors may set  a higher minimum 
for
their customers. To reach the  minimum Trust-wide initial investment,  
purchases
of  shares may be  aggregated over a period  of six months.  There is no 
minimum
subsequent investment.
    
 
   
    Conflict of interest restrictions may  apply to an institution's receipt  
of
compensation  paid by  the Fund in  connection with the  investment of 
fiduciary
funds in Class B or  Class C shares. See  also "Management of the  Fund--
Service
Organizations."  Institutions, including  banks regulated by  the Comptroller 
of
the Currency and  investment advisers and  other money managers  subject to  
the
jurisdiction  of the Securities and Exchange Commission, the Department of 
Labor
or state  securities commissions,  are  urged to  consult their  legal  
advisors
before investing fiduciary funds in Class B or Class C shares.
    
 
                                       8
<PAGE>
   
    SUBACCOUNTING  SERVICES.  Institutions are  encouraged to open single 
master
accounts. However, certain  institutions may  wish to use  the Transfer  
Agent's
subaccounting  system to minimize their internal recordkeeping requirements. 
The
Transfer Agent  charges a  fee  based on  the  level of  subaccounting  
services
rendered.  Institutions holding Fund shares in a fiduciary, agency, custodial 
or
similar capacity may charge or pass through subaccounting fees as part of or  
in
addition  to normal trust or agency account  fees. They may also charge fees 
for
other services provided which  may be related to  the ownership of Fund  
shares.
This  Prospectus should, therefore, be read  together with any agreement 
between
the customer and the institution with regard to the services provided, the  
fees
charged for those services and any restrictions and limitations imposed.
    
 
REDEMPTION PROCEDURES
 
   
    Redemption  orders must  be transmitted to  Lehman Brothers  by telephone 
at
1-800-851-3134. Payment  for redeemed  shares for  which a  redemption order  
is
received by Lehman Brothers before noon, Eastern time, on a day that both 
Lehman
Brothers  and  the Federal  Reserve  Bank of  Boston  are open  for  business 
is
normally made  in federal  funds wired  to the  redeeming investor  on the  
same
business  day.  Payment for  redeemed  shares for  which  a redemption  order 
is
received by Lehman Brothers after noon, Eastern time, on such a business day  
is
normally  made in  federal funds  wired to  the redeeming  investor on  the 
next
business day following redemption.
    
 
   
    Shares are redeemed at the net  asset value per share next determined  
after
Lehman  Brothers' receipt of the redemption order. While the Fund intends to 
use
its best efforts to  maintain its net  asset value per share  at $1.00, the  
net
proceeds paid to an investor upon redemption may be more or less than the 
amount
invested  depending upon a share's net asset value at the time of redemption. 
To
allow the Fund's Investment  Adviser to manage  the Fund effectively,  
investors
are  strongly urged to initiate all investments or redemptions of Fund shares 
as
early in the day as possible and to  notify Lehman Brothers at least one day  
in
advance of transactions in excess of $5 million.
    
 
   
    The  Fund reserves the  right to wire redemption  proceeds within seven 
days
after receiving  the redemption  order if,  in the  judgment of  the  
Investment
Adviser, an earlier payment could adversely affect the Fund. The Fund shall 
have
the right to redeem involuntarily shares in any account at their net asset 
value
if  the value of the  account is less than $10,000  after 60 days' prior 
written
notice to the investor. Any such redemption  shall be effected at the net  
asset
value per share next determined after the redemption order is entered. If 
during
the  60-day period the investor increases the value of its account to $10,000 
or
more, no such  redemption shall  take place. In  addition, the  Fund may  
redeem
shares  involuntarily or suspend the right  of redemption as permitted under 
the
Investment Company Act of  1940, as amended (the  "1940 Act"), or under  
certain
special circumstances described in the Statement of Additional Information 
under
"Additional Purchase and Redemption Information."
    
 
   
VALUATION OF SHARES--NET ASSET VALUE
    
   
    The  Fund's net asset value  per share for purposes  of pricing purchase 
and
redemption orders is determined by the Fund's Administrator as of noon and  
4:00
P.M.,  Eastern time, on  each weekday, with  the exception of  those holidays 
on
which either the New York Stock Exchange  or the Federal Reserve Bank of  
Boston
is  closed.  Currently, one  or both  of  these institutions  are closed  on 
the
customary national  business holidays  of New  Year's Day,  Martin Luther  
King,
Jr.'s Birthday (observed), Presidents' Day (Washington's Birthday), Good 
Friday,
Memorial  Day, Independence  Day, Labor  Day, Columbus  Day (observed), 
Veterans
Day, Thanksgiving  Day  and  Christmas  Day, and  on  the  preceding  Friday  
or
subsequent    Monday    when    one    of   these    holidays    falls    on   
a
    
 
                                       9
<PAGE>
   
Saturday or Sunday, respectively. The net asset  value per share of the Fund  
is
calculated  by adding the value of all  securities and other assets belonging 
to
the Fund, subtracting liabilities, and dividing  the result by the total  
number
of  the  Fund's  outstanding shares  (irrespective  of class  or  sub-class). 
In
computing net asset value, the Fund uses the amortized cost method of  
valuation
as  described  in  the  Statement of  Additional  Information  under 
"Additional
Purchase and Redemption Information." The Fund's  net asset value per share  
for
purposes  of pricing purchase and  redemption orders is determined 
independently
of the net asset value of the Trust's other investment portfolios.
    
 
   
OTHER MATTERS
    
   
    Fund shares are sold and redeemed without charge by the Fund.  
Institutional
investors  purchasing or  holding Fund  shares for  their customer  accounts 
may
charge customers  fees  for  cash  management and  other  services  provided  
in
connection with their accounts. A customer should, therefore, consider the 
terms
of its account with an institution before purchasing Fund shares. An 
institution
purchasing  or redeeming Fund  shares on behalf of  its customers is 
responsible
for transmitting  orders to  Lehman  Brothers in  accordance with  its  
customer
agreements.
    
 
   
                                   DIVIDENDS
    
 
   
    Investors  of the Fund  are entitled to  dividends and distributions 
arising
only from  the  net investment  income  and capital  gains,  if any,  earned  
on
investments held by the Fund. The Fund's net investment income is declared 
daily
as  a dividend to shareholders of record at  the close of business on the day 
of
declaration. Shares begin accruing dividends on  the day the purchase order  
for
the  shares is effected and continue to  accrue dividends through the day 
before
such shares are  redeemed. Dividends are  paid monthly by  wire transfer  
within
five business days after the end of the month or within five business days 
after
a redemption of all of an investor's shares of a particular class. The Fund 
does
not expect to realize net long-term capital gains.
    
 
   
    Dividends  are determined in the same manner and are paid in the same 
amount
for each Fund share, except that Class B and Class C shares bear all the 
expense
of fees paid to Service Organizations. As  a result, at any given time, the  
net
yield  on Class B and Class C shares  will be .25% and .35%, respectively, 
lower
than the net yield on Class A shares.
    
 
   
    Institutional investors  may elect  to have  their dividends  reinvested  
in
additional  full and fractional shares of the  same class of shares with 
respect
to which such dividends are  declared at the net asset  value of such shares  
on
the  payment  date.  Reinvested  dividends receive  the  same  tax  treatment 
as
dividends paid in cash. Such election,  or any revocation thereof, must be  
made
in  writing  to the  Fund's  Distributor, at  260  Franklin Street,  15th 
Floor,
Boston, Massachusetts 02110-9624, and will become effective after its receipt 
by
TSSG, with respect to dividends paid.
    
 
   
    **1 TSSG,  as Transfer  Agent, will  send each  investor or  its  
authorized
representative,  if  any,  an annual  statement  designating the  amount  of 
any
dividends and  capital  gains distributions  made  during each  year  and  
their
federal tax qualification.
    
 
                                       10
<PAGE>
   
                                     TAXES
    
 
   
    The Fund qualified in its last taxable year and intends to qualify in 
future
years  as a  "regulated investment company"  under the Internal  Revenue Code 
of
1986, as amended  (the "Code"). A  regulated investment company  is exempt  
from
federal income tax on amounts distributed to its investors.
    
 
   
    **2  Qualification as  a regulated investment  company under the  Code for 
a
taxable year  requires, among  other things,  that the  Fund distribute  to  
its
investors  at least the sum of 90%  of its exempt-interest income net of 
certain
deductions and  90% of  its investment  company taxable  income for  such  
year.
Dividends  derived  from exempt-interest  income may  be  treated by  the 
Fund's
investors as items of interest excludable from their gross income under  
Section
103(a)  of the Code, unless under the circumstances applicable to the 
particular
investor the exclusion  would be  disallowed. (See the  Statement of  
Additional
Information under "Additional Information Concerning Taxes.")
    
 
   
    **3  If the  Fund should  hold certain  private activity  bonds issued 
after
August 7,  1986, investors  must include,  as  an item  of tax  preference,  
the
portion  of dividends paid by the Fund  that is attributable to interest on 
such
bonds in  their  federal alternative  minimum  taxable income  for  purposes  
of
determining liability (if any) for the 24% alternative minimum tax applicable 
to
individuals  and  the  20% alternative  minimum  tax and  the  environmental 
tax
applicable  to   corporations.   Corporate   investors  must   also   take   
all
exempt-interest  dividends into  account in determining  certain adjustments 
for
federal alternative minimum  and environmental tax  purposes. The  
environmental
tax  applicable to corporations is imposed at the  rate of .12% on the excess 
of
the corporation's  modified  federal  alternative minimum  taxable  income  
over
$2,000,000.  Investors receiving Social  Security benefits should  note that 
all
exempt-interest  dividends  will  be  taken  into  account  in  determining  
the
taxability of such benefits.
    
 
   
    **4  To the  extent, if  any, dividends paid  to investors  are derived 
from
taxable income or  from long-term  or short-term capital  gains, such  
dividends
will  not be exempt from federal income  tax, whether such dividends are paid 
in
the form of  cash or additional  shares, and may  also be subject  to state  
and
local  taxes.  Under  state  or  local  law,  the  Fund's  distributions  of 
net
investment income may be taxable to  investors as dividend income even though  
a
substantial  portion  of  such distributions  may  be derived  from  interest 
on
tax-exempt obligations which, if  realized directly, would  be exempt from  
such
income taxes.
    
 
   
    **5  Dividends declared in October, November or December of any year 
payable
to investors of record on a specified date in such months will be deemed to 
have
been received by the investors and paid by the Fund on December 31 of such  
year
in  the event such dividends  are actually paid during  January of the 
following
year.
    
 
   
    **6 Investors will be advised at least annually as to the federal income 
tax
consequences of distributions made each year.
    
 
   
    **7 The  foregoing  discussion  is only  a  brief  summary of  some  of  
the
important  federal  tax  considerations  generally affecting  the  Fund  and 
its
investors. No attempt is made to present a detailed explanation of the  
federal,
state  or local  income tax  treatment of  the Fund  or its  investors, and 
this
discussion  is  not  intended  as   a  substitute  for  careful  tax   
planning.
Accordingly,  potential investors in the Fund  should consult their tax 
advisors
with specific reference to their own tax situation.
    
 
                                       11
<PAGE>
                             MANAGEMENT OF THE FUND
 
   
    The business and affairs of the Fund are managed under the direction of  
the
Trust's  Board  of Trustees.  The  Trustees approve  all  significant 
agreements
between the Trust  and the  persons or companies  that furnish  services to  
the
Fund,   including   agreements   with  its   Distributor,   Investment  
Adviser,
Administrator, Custodian and  Transfer Agent. The  day-to-day operations of  
the
Fund  are  delegated to  the Fund's  Investment  Adviser and  Administrator. 
The
Statement of  Additional  Information  relating to  the  Fund  contains  
general
background  information  regarding each  Trustee  and executive  officer  of 
the
Trust.
    
 
   
DISTRIBUTOR
    
   
    Lehman Brothers, located  at 3 World  Financial Center, New  York, New  
York
10285,  is the Distributor of the Fund's shares. Lehman Brothers, a leading 
full
service investment  firm,  meets the  diverse  financial needs  of  
individuals,
institutions  and governments around the world. Lehman Brothers has entered 
into
a  Distribution  Agreement  with  the  Trust  pursuant  to  which  it  has   
the
responsibility for distributing shares of the Fund.
    
 
INVESTMENT ADVISER--LEHMAN BROTHERS GLOBAL ASSET MANAGEMENT INC.
 
   
    Lehman  Brothers Global Asset Management Inc.  ("LBGAM"), located at 3 
World
Financial Center, New  York, New York,  10285, serves as  the Fund's  
Investment
Adviser.  LBGAM is  a wholly owned  subsidiary of Lehman  Brothers Holdings 
Inc.
("Holdings"). LBGAM,  together with  other Lehman  Brothers investment  
advisory
affiliates,  serves as  Investment Adviser  to investment  companies and 
private
accounts and  has assets  under management  in  excess of  [$15] billion  as  
of
______, 1994.
    
 
   
    As   Investment  Adviser  to  the  Fund,  LBGAM  will  among  other  
things,
participate in  the  formulation  of the  Fund's  investment  policies,  
analyze
economic  trends  affecting  the  Fund  and  monitor  and  evaluate  the  
Fund's
investment objective and policies and the Fund's investment performance. For 
its
services LBGAM is entitled to receive a monthly fee from the Fund at the  
annual
rate of .10% of the value of the Fund's average daily net assets. For the 
period
February  8,  1993  (commencement  of operations)  to  January  31,  1994. 
LBGAM
received an advisory fee from the Fund in the amount of _% of average daily  
net
assets.
    
 
   
ADMINISTRATOR AND TRANSFER AGENT--THE SHAREHOLDER SERVICES GROUP, INC.
    
   
    The  Shareholder  Services Group,  Inc.  ("TSSG"), located  at  One 
Exchange
Place, 53  State  Street, Boston,  Massachusetts  02109, serves  as  the  
Fund's
Administrator  and Transfer  Agent. TSSG is  a wholly owned  subsidiary of 
First
Data Corporation. As Administrator, TSSG calculates  the net asset value of  
the
Fund's  shares and generally assists in all aspects of the Fund's 
administration
and operation. As  compensation for  TSSG's services as  Administrator, TSSG  
is
entitled  to receive from the Fund  a monthly fee at the  annual rate of .10% 
of
the value of  the Fund's  average daily  net assets.  TSSG is  also entitled  
to
receive a fee from the Fund for its services as Transfer Agent. TSSG pays 
Boston
Safe,  the Fund's  Custodian, a  portion of  its monthly  administration fee 
for
custody services rendered to the Fund.
    
 
   
CUSTODIAN--BOSTON SAFE DEPOSIT AND TRUST COMPANY
    
   
    Boston Safe, a wholly owned subsidiary of The Boston Company, Inc.,  
located
at  One  Boston  Place,  Boston,  Massachusetts  02108,  serves  as  the  
Fund's
Custodian.
    
 
                                       12
<PAGE>
SERVICE ORGANIZATIONS
 
   
    Financial  institutions  such as  banks, savings  and loan  associations 
and
other such institutions ("Service Organizations") and/or institutional 
customers
of Service Organizations may  purchase Class B or  Class C shares. These  
shares
are  identical in all respects to Class A  shares except that they bear the 
fees
described below and enjoy certain exclusive voting rights on matters relating 
to
these fees. The Fund will enter into an agreement with each Service 
Organization
whose customers ("Customers") are  the beneficial owners of  Class B or Class  
C
shares  that requires  the Service Organization  to provide  certain services 
to
Customers in consideration of the Fund's  payment of service fees at the  
annual
rate  of .25% or .35%, respectively of the  average daily net asset value of 
the
respective Class  beneficially  owned by  Customers.  Such services,  which  
are
described   more  fully  in  the   Statement  of  Additional  Information  
under
"Management of the  Fund's Service Organizations,"  may include aggregating  
and
processing  purchase  and redemption  requests  from Customers  and  placing 
net
purchase  and  redemption  orders  with  Lehman  Brothers;  processing  
dividend
payments   from  the  Fund   on  behalf  of   Customers;  providing  
information
periodically to Customers showing their positions in shares; arranging for  
bank
wires; responding to Customer inquiries relating to the services provided by 
the
Service  Organization and handling correspondence;  acting as investor of 
record
and  nominee;  and  providing  reasonable  assistance  in  connection  with  
the
distribution  of shares to Customers. Services  provided with respect to Class 
B
shares will generally be more limited than those provided with respect to  
Class
C  shares. Under the terms of the agreements, Service Organizations are 
required
to provide  to their  Customers a  schedule of  any fees  that they  may  
charge
Customers  in connection with  their investments in  Class B or  Class C 
shares.
Class A shares  are sold to  financial institutions that  have not entered  
into
servicing  agreements  with the  Fund in  connection  with their  investments. 
A
salesperson and any other person entitled to receive compensation for selling 
or
servicing shares of the Fund may  receive different compensation for selling  
or
servicing one Class of shares over another Class.
    
 
EXPENSES
 
   
    The  Fund bears all of its own  expenses. The Fund's expenses include 
taxes,
interest, fees and  salaries of the  Trust's trustees and  officers who are  
not
directors,  officers or employees of  the Fund's service contractors, 
Securities
and Exchange  Commission fees,  state securities  qualification fees,  costs  
of
preparing and printing prospectuses for regulatory purposes and for 
distribution
to  investors,  advisory  and  administration fees,  charges  of  the 
custodian,
transfer agent and dividend disbursing agent, Service Organization fees, 
certain
insurance premiums,  outside  auditing and  legal  expenses, costs  of  
investor
reports and investor meetings and any extraordinary expenses. The Fund also 
pays
for  brokerage fees and commissions (if any) in connection with the purchase 
and
sale of portfolio securities. In order  to maintain a competitive expense  
ratio
during 1994, LBGAM and TSSG have agreed voluntarily to reimburse the Fund if 
and
to  the  extent that  the  Fund's total  operating  expenses (other  than 
taxes,
interest, brokerage fees and commissions, Rule 12b-1 fees under the 1940 Act 
and
extraordinary expenses) exceed .16% of average daily net assets through 
December
31,  1994.  The  Investment  Adviser   and  Administrator  intend  to   
continue
voluntarily  to  reimburse  the Fund  to  the  extent necessary  to  maintain 
an
annualized expense ratio at a  level no greater than  .18% of average daily  
net
assets  thereafter.  This voluntary  reimbursement  will not  be  changed 
unless
investors are at a level provided at least 60 days' advance notice. In 
addition,
these service providers have agreed to reimburse the Fund to the extent 
required
by applicable state law for certain expenses that are described in the 
Statement
of Additional Information  relating to  the Fund.  Any fees  charged by  
Service
Organizations  or other institutional investors to their customers in 
connection
with investments in Fund shares are not reflected in the Fund's expenses.
    
 
      * 1 moved from here; text not shown
 
                                       13
<PAGE>
                                     YIELDS
 
   
    From time  to time,  the "yields,"  "effective yields"  and  "tax-
equivalent
yields"  for Class A, Class B or Class  C shares may be quoted in 
advertisements
or in reports to  investors. Yield quotations are  computed separately for  
each
Class  of shares. The "yield" quoted in advertisements for a particular class 
or
sub-class of shares  refers to  the income generated  by an  investment in  
such
shares of over a specified period (such as a seven-day period) identified in 
the
advertisement.  This income is then "annualized;"  that is, the amount of 
income
generated by the investment during that  period is assumed to be generated  
each
such  period over a 52-week  or one-year period and is  shown as a percentage 
of
the  investment.  The  "effective  yield"  is  calculated  similarly  but,  
when
annualized,  the  income  earned  by  an investment  in  a  particular  class 
or
sub-class is assumed to  be reinvested. The "effective  yield" will be  
slightly
higher  than  the "yield"  because  of the  compounding  effect of  this 
assumed
reinvestment. The "tax-equivalent yield" demonstrates the level of taxable 
yield
necessary to produce an after-tax yield equivalent to the Fund's tax-free  
yield
for  each class or sub-class of shares. It is calculated by increasing the 
yield
(calculated as above) by the amount necessary to reflect the payment of  
federal
taxes  at a stated rate.  The "tax-equivalent yield" will  always be higher 
than
the "yield ."
    
 
   
    The Fund's  yields may  be compared  to  those of  other mutual  funds  
with
similar  objectives, to bond or other  relevant indices, or to rankings 
prepared
by independent services or other financial or industry publications that 
monitor
the performance of mutual funds, or to  the average yields reported by the  
BANK
RATE  MONITOR from money market deposit accounts offered by the 50 leading 
banks
and thrift institutions in the top five standard metropolitan statistical 
areas.
For example, such data are reported  in national financial publications such  
as
IBC/  DONOGHUE'S MONEY FUND REPORT-R-, IBBOTSON  ASSOCIATES OF CHICAGO, THE 
WALL
STREET JOURNAL and  THE NEW YORK  TIMES, reports prepared  by Lipper  
Analytical
Services, Inc. and publications of a local or regional nature.
    
 
   
    THE  FUND'S YIELD FIGURES FOR A  CLASS OF SHARES REPRESENT PAST 
PERFORMANCE,
WILL FLUCTUATE AND SHOULD NOT BE CONSIDERED AS REPRESENTATIVE OF FUTURE 
RESULTS.
The yield of  any investment is  generally a function  of portfolio quality  
and
maturity,  type of investment  and operating expenses. Since  holders of Class 
B
and Class  C shares  bear the  service  fees for  services provided  by  
Service
Organizations, the net yield on such shares can be expected at any given time 
to
be  lower than  the net  yield on Class  A shares.  Any fees  charged by 
Service
Organizations or other  institutional investors directly  to their customers  
in
connection  with  investments in  Fund shares  are not  reflected in  the 
Fund's
expenses or yields. The methods used to compute the Fund's yields are  
described
in  more detail in  the Statement of Additional  Information. Investors may 
call
800-238-2560 (Class A shares code: 008; Class B shares code: 108; Class C 
shares
code: 208) to obtain current yield information.
    
 
   
    The yield, effective yield and tax-equivalent  yield for Class A shares  
for
the  Fund for the seven-day period ended January 31, 1994 were __%, __% and 
__%,
respectively.
    
 
   
                             DESCRIPTION OF SHARES
    
 
   
    The Trust  is a  Massachusetts business  trust established  on November  
25,
1992.
    
 
   
    The  Trust's Declaration of Trust authorizes  the Board of Trustees to 
issue
an unlimited number of full and fractional shares of beneficial interest in  
the
Trust  and  to classify  or  reclassify any  unissued  shares into  one  or 
more
additional classes of  shares. The  Trust is an  open-end management  
investment
company, which offers twelve portfolios: Prime Money Market Fund (Class A, 
Class
B  and Class C),  Prime Value Money Market  Fund (Class A, Class  B, Class C 
and
Class D), Government Obligations  Money Market Fund (Class  A, Class B, Class  
C
    
 
                                       14
<PAGE>
   
and  Class D), 100% Government  Obligations Money Market Fund  (Class A, Class 
B
and Class C), Treasury Instruments  Money Market Fund II  (Class A, Class B  
and
Class  C), 100%  Treasury Instruments  Money Market Fund  (Class A,  Class B 
and
Class C), Tax-Free Money Market Fund (Class  A, Class B and Class C),  
Municipal
Money  Market Fund (Class A, Class B, Class C and Class D), California 
Municipal
Money Market Fund  (Class A,  Class B  and Class  C), New  York Municipal  
Money
Market  Fund (Class A, Class B and  Class C), Floating Rate U.S. Government 
Fund
(Class A and  Class B), and  Short Duration  U.S. Government Fund  (Class A  
and
Class  B). Shares of the New York  Municipal Money Market Fund are not 
currently
sold to the public. The Declaration of Trust further authorizes the Trustees  
to
classify or reclassify any class of shares into one or more sub-classes.
    
 
      * 2 moved from here; text not shown
 
      * 3 moved from here; text not shown
 
      * 4 moved from here; text not shown
 
      * 5 moved from here; text not shown
 
      * 6 moved from here; text not shown
 
      * 7 moved from here; text not shown
 
   
    THIS  PROSPECTUS AND  THE STATEMENT  OF ADDITIONAL  INFORMATION 
INCORPORATED
HEREIN RELATE PRIMARILY TO THE FUND  AND DESCRIBE ONLY THE INVESTMENT  
OBJECTIVE
AND  POLICIES, OPERATIONS,  CONTRACTS AND  OTHER MATTERS  RELATING TO  THE 
FUND.
INVESTORS WISHING  TO OBTAIN  SIMILAR INFORMATION  REGARDING THE  TRUST'S  
OTHER
PORTFOLIOS MAY OBTAIN SEPARATE PROSPECTUSES DESCRIBING THEM BY CONTACTING 
LEHMAN
BROTHERS AT 1-800-368-5556.
    
 
   
    The  Trust does  not presently intend  to hold annual  meetings of 
investors
except as required by the 1940 Act or other applicable law. The Trust will  
call
a meeting of investors for the purpose of voting upon the question of removal 
of
a  member of the Board  of Trustees upon written  request of investors owning 
at
least 10% of the outstanding shares of the Trust entitled to vote.
    
 
   
    Each Fund share represents  an equal, proportionate  interest in the  
assets
belonging  to the  Fund. Each  share, which  has a  par value  of $.001,  has 
no
preemptive or conversion rights.  When issued for payment  as described in  
this
Prospectus, shares will be fully paid and non-assessable.
    
 
   
    Holders  of the Fund's shares will vote in the aggregate and not by class 
on
all matters, except where otherwise required by law and except that only Class 
B
or Class C  shares, as  the case may  be, will  be entitled to  vote on  
matters
submitted  to a  vote of  investors pertaining  to the  Fund's arrangements 
with
Service Organizations with respect to the relevant Class. Further, investors  
of
all of the Fund and of the Trust's portfolios will vote in the aggregate and 
not
by  portfolio except as otherwise required by  law or when the Board of 
Trustees
determines that the matter to  be voted upon affects  only the interests of  
the
investors   of  a  particular  portfolio.   (See  the  Statement  of  
Additional
Information under "Additional Description  Concerning Fund Shares" for  
examples
where  the 1940 Act  requires voting by  portfolio.) Investors of  the Trust 
are
entitled to one vote for each
    
 
                                       15
<PAGE>
full share held (irrespective  of class or portfolio)  and fractional votes  
for
fractional  shares held. Voting rights are not cumulative, and, accordingly, 
the
holders of more than 50% of the aggregate  shares of the Trust may elect all  
of
the trustees.
 
   
    For  information  concerning  the  redemption of  Fund  shares  and 
possible
restrictions on their transferability, see "Purchase and Redemption of 
Shares."
    
 
                                       16
<PAGE>
                LEHMAN BROTHERS INSTITUTIONAL FUNDS GROUP TRUST
 
   
                            Prime Money Market Fund
                         Prime Value Money Market Fund
                    Government Obligations Money Market Fund
                 100% Government Obligations Money Market Fund
                   Treasury Instruments Money Market Fund II
                  100% Treasury Instruments Money Market Fund
                          Municipal Money Market Fund
                           Tax-Free Money Market Fund
                     California Municipal Money Market Fund
                      New York Municipal Money Market Fund
    
                            ------------------------
 
   
                       Floating Rate U.S. Government Fund
                      Short Duration U.S. Government Fund
    
                            ------------------------
 
   
NO  PERSON  HAS  BEEN  AUTHORIZED  TO  GIVE  ANY  INFORMATION  OR  TO  MAKE  
ANY
REPRESENTATIONS NOT CONTAINED IN THIS PROSPECTUS, OR IN THE FUND'S STATEMENT  
OF
ADDITIONAL  INFORMATION INCORPORATED HEREIN BY REFERENCE, IN CONNECTION WITH 
THE
OFFERING MADE BY  THIS PROSPECTUS  AND, IF GIVEN  OR MADE,  SUCH INFORMATION  
OR
REPRESENTATIONS  MUST NOT BE RELIED UPON AS  HAVING BEEN AUTHORIZED BY THE 
TRUST
OR ITS DISTRIBUTOR. THIS PROSPECTUS DOES NOT CONSTITUTE AN OFFERING BY THE 
TRUST
OR BY  THE  DISTRIBUTOR IN  ANY  JURISDICTION IN  WHICH  SUCH OFFERING  MAY  
NOT
LAWFULLY BE MADE.
    
 
                              -------------------
 
                               TABLE OF CONTENTS
 
   
<TABLE>
<CAPTION>
                                                PAGE
                                              ---------
<S>                                           <C>
Background and Expense Information..........          2
Financial Highlights........................          3
Investment Objective and Policies...........          4
Purchase and Redemption of Shares...........          8
Dividends...................................         10
Taxes.......................................         11
Management of the Fund......................         12
Yields......................................         14
Description of Shares.......................         14
</TABLE>
    
 
                                 TAX-FREE MONEY
                                  MARKET FUND
 
                              -------------------
 
   
                                   PROSPECTUS
                                  May __, 1994
    
 
                             ---------------------
 
                                LEHMAN BROTHERS
 
   
THIS  PROSPECTUS AND THE STATEMENT OF ADDITIONAL INFORMATION INCORPORATED 
HEREIN
RELATE PRIMARILY TO  THE FUND  AND DESCRIBE  ONLY THE  INVESTMENT OBJECTIVE  
AND
POLICIES,  OPERATIONS,  CONTRACTS  AND  OTHER  MATTERS  RELATING  TO  THE  
FUND.
INVESTORS WISHING  TO OBTAIN  SIMILAR INFORMATION  REGARDING THE  TRUST'S  
OTHER
PORTFOLIOS MAY OBTAIN SEPARATE PROSPECTUSES DESCRIBING THEM BY CONTACTING 
LEHMAN
BROTHERS AT 1-800-368-5556.
    


<PAGE>
PROSPECTUS
 
                            PRIME MONEY MARKET FUND
 
                       An Investment Portfolio Offered By
                Lehman Brothers Institutional Funds Group Trust
 
   
    Lehman  Brothers Institutional Funds Group Trust (the "Trust") is a no-
load,
open-end, management investment company. The shares described in this 
Prospectus
represent interests in the Prime Money  Market Fund portfolio (the "Fund"),  
one
of a family of money market portfolios of the Trust.
    
   
    The  Fund's INVESTMENT OBJECTIVE is to  provide current income and 
stability
of principal. The Fund  invests in a  portfolio consisting of  a broad range  
of
short-term  instruments, including U.S. government  and U.S. bank and 
commercial
obligations and repurchase agreements relating to such obligations.
    
 
   
    Fund shares may not be purchased by individuals directly, but  
institutional
investors  may purchase shares for accounts  maintained by individuals. The 
Fund
currently offers  three  classes of  shares.  In  addition to  Class  A  
shares,
institutional  investors may  purchase on behalf  of their customers  Class B 
or
Class C shares which accrue daily dividends in the same manner as Class A 
shares
but bear all  fees payable by  the Fund to  institutional investors for  
certain
services  they provide to the beneficial  owners of such shares. See 
"Management
of the Fund--Service Organizations."
    
   
    AN INVESTMENT IN  THE FUND  IS NEITHER INSURED  NOR GUARANTEED  BY THE  
U.S.
GOVERNMENT. THERE CAN BE NO ASSURANCE THAT THE FUND WILL BE ABLE TO MAINTAIN 
ITS
NET ASSET VALUE OF $1.00 PER SHARE.
    
   
    LEHMAN  BROTHERS, INC., ("Lehman  Brothers") sponsors the  Fund and, acts 
as
Distributor of its shares. LEHMAN  BROTHERS GLOBAL ASSET MANAGEMENT INC.  
serves
as the Fund's Investment Adviser.
    
   
    The  address of the Fund is One Exchange Place, Boston, Massachusetts 
02109.
The Fund can be  contacted as follows: for  purchase and redemption orders  
only
call  1-800-851-3134; for yield information  call 1-800-238-2560 (Class A 
shares
code: 001;  Class B  shares code:  101; Class  C shares  code: 201);  for  
other
information call 1-800-368-5556.
    
   
    This  Prospectus briefly sets forth certain  information about the Fund 
that
investors should  know before  investing.  Investors are  advised to  read  
this
Prospectus  and retain it for future reference. Additional information about 
the
Fund, contained in a Statement of Additional Information dated May __, 1994,  
as
amended  or supplemented from time  to time, has been  filed with the 
Securities
and Exchange Commission and is available to investors without charge by  
calling
the   Fund's  Distributor   at  1-800-368-5556.  The   Statement  of  
Additional
Information is incorporated in its entirety by reference into this Prospectus.
    
 
   
    SHARES OF THE  FUND ARE  NOT DEPOSITS OR  OBLIGATIONS OF,  OR GUARANTEED  
OR
ENDORSED  BY, ANY BANK, AND SUCH SHARES ARE NOT FEDERALLY INSURED BY THE 
FEDERAL
DEPOSIT INSURANCE CORPORATION, THE FEDERAL RESERVE BOARD OR ANY OTHER 
GOVERNMENT
AGENCY. SHARES  OF THE  FUND  INVOLVE CERTAIN  INVESTMENT RISKS,  INCLUDING  
THE
POSSIBLE LOSS OF PRINCIPAL.
    
                           --------------------------
THESE  SECURITIES HAVE  NOT BEEN APPROVED  OR DISAPPROVED BY  THE SECURITIES 
AND
   EXCHANGE COMMISSION  OR  ANY  STATE  SECURITIES  COMMISSION  NOR  HAS  THE
      SECURITIES   AND  EXCHANGE   COMMISSION  OR   ANY  STATE  SECURITIES
      COMMISSION
         PASSED UPON THE ACCURACY OR  ADEQUACY OF THIS PROSPECTUS.  ANY
             REPRESENTATION TO THE CONTRARY IS A CRIMINAL OFFENSE.
                           --------------------------
 
                                LEHMAN BROTHERS
 
   
May __, 1994
    
<PAGE>
                       BACKGROUND AND EXPENSE INFORMATION
 
   
    The  following Expense Summary lists the costs and expenses that an 
investor
in the Fund can  expect to incur  during the Fund's  current fiscal year  
ending
January  31, 1995. The Fund  offers three separate classes  of shares. Shares 
of
each class represent  equal, pro  rata interests in  the Fund  and accrue  
daily
dividends  in the same manner  except that Class B and  Class C shares bear 
fees
payable by the Fund (at  the rate of .25% and  .35% per annum, respectively)  
to
institutions  for services they provide to the beneficial owners of such 
shares.
See "Management of the Fund--Service Organizations."
    
 
EXPENSE SUMMARY
 
   
<TABLE>
<CAPTION>
                                        CLASS A CLASS B CLASS C
                                        SHARES  SHARES  SHARES
                                        ------- ------- -------
<S>                                     <C>     <C>     <C>
ANNUAL FUND OPERATING EXPENSES
 (as a percentage of average net assets)
    Advisory Fees.......................  0.10%*  0.10%*  0.10%*
    Rule 12b-1 fees.....................  none    .25%    .35%
    Other Expenses--including
     Administration Fees
     (net of applicable fee waivers)....  0.06%*  0.06%*  0.06%*
                                        ------- ------- -------
    Total Fund Operating Expenses (after
     fee waivers)*......................   .16%   .41%    .51%
                                        ------- ------- -------
                                        ------- ------- -------
<FN>
---------
* The Expense Summary above has  been restated to reflect the Fund's  
Investment
  Adviser's  and Administrator's Voluntary  reimbursement arrangements in 
effect
  for the Fund's fiscal year ending January  31, 1995. With respect to Class  
A,
  Class  B and  Class C  share for the  month of  January, 1995,  the Total 
Fund
  Operating Expenses including reimbursement of  expenses are anticipated to  
be
  .18%, .43%, and .53%, respectively.
</TABLE>
    
 
   
    In  order to  maintain a competitive  expense ratio during  1994, the 
Funds'
Investment Adviser and  Administrator have voluntarily  agreed to reimburse  
the
Fund  if and  to the  extent that  total operating  expenses (other  than 
taxes,
interest, brokerage  fees and  commissions, Rule  12b-1 fees  and  
extraordinary
expenses) exceed .16% of average daily net assets through December 31, 1994. 
For
the  years  1995-1997,  the  Investment  Adviser  and  Administrator  intends 
to
continue voluntarily to reimburse the Funds to the extent necessary to  
maintain
an annualized expense ratio at a level no greater than .18% of average daily 
net
assets.  The voluntary  reimbursement arrangements  described above  will not 
be
changed unless shareholders are provided at  least 60 days' advance notice.  
The
maximum   annual  contractual  fees  payable   to  the  Investment  Adviser  
and
Administrator total .20% of  average daily net  assets. Absent reimbursement  
of
expenses,  the Total  Fund Operating Expenses  of Class  A, Class B  and Class 
C
would be .24%,  .49% and  .59%, respectively, of  the Fund's  average daily  
net
assets.
    
---------
   
EXAMPLE:  An investor would  pay the following expenses  on a $1,000 
investment,
assuming (1) a  5% annual  return and  (2) redemption at  the end  of each  
time
period with respect to the following shares:
    
 
   
<TABLE>
<CAPTION>
                    1 YEAR  3 YEARS  5 YEARS  10 YEARS
                    ------- -------- -------- --------
<S>                 <C>     <C>      <C>      <C>
Class A shares:.....    $2     $ 5      $ 9      $20
Class B shares:.....    $4     $13      $23      $52
Class C shares:.....    $5     $16      $29      $64
</TABLE>
    
 
                                       2
<PAGE>
   
THE  FOREGOING SHOULD NOT BE CONSIDERED  A REPRESENTATION OF ACTUAL EXPENSES 
AND
RATES OF RETURN, WHICH MAY BE GREATER OR LESSER THAN THOSE SHOWN.
    
 
    The purpose of the foregoing table is to assist an investor in 
understanding
the various costs and expenses that an  investor in the Fund will bear  
directly
or  indirectly. Certain Service Organizations (as defined below) also may 
charge
their clients fees in connection with investments in Fund shares, which fees 
are
not reflected in the table. For more complete descriptions of the various  
costs
and  expenses, see "Management of the Fund" in this Prospectus and the 
Statement
of Additional Information.
 
   
                              FINANCIAL HIGHLIGHTS
    
 
   
    The following financial  highlights for  the fiscal year  ended January  
31,
1994  is derived from the Fund's Financial  Statements audited by Ernst & 
Young,
independent accountants. This information should be read in conjunction with 
the
financial  statements  and  notes  thereto  that  appear  in  the  Statement  
of
Additional Information.
    
 
   
                            PRIME MONEY MARKET FUND
    
 
   
<TABLE>
<CAPTION>
                                                                      PERIOD 
ENDED PERIOD ENDED PERIOD ENDED
                                                                        
1/31/94*     1/31/94*     1/31/94*
                                                                        CLASS 
A      CLASS B      CLASS C
<S>                                                                   <C>          
<C>          <C>
Net asset value, beginning of period..................................       
$1.00       $1.00        $1.00
Net investment income(1)..............................................      
0.0310     0.0110       0.0001
Dividends from net investment income..................................     
(0.0310)    (0.0110)    (0.0001)
Net asset value, end of period........................................       
$1.00      $1.00        $1.00
Total return(2).......................................................        
3.14%       0.99%         --(3)
Ratios to average net assets/supplemental data:
Net assets, end of period (in 000's)..................................  
$2,866,353   $350,666           --(4)
Ratio of net investment income to average net assets(5)...............        
3.16%       2.91%       2.81%
Ratio of operating expenses to average net assets(5)(6)...............        
0.11%       0.36%       0.46%
<FN>
---------
*     The  Prime Money Market Fund Class A, Class B and Class C Shares 
commenced
      operations on February 8, 1993, September  2, 1993 and December 27,  
1993,
      respectively.
(1)   Net  investment income  before waiver of  fees by  the Investment 
Adviser,
      Administrator, Custodian and Transfer Agent and expenses reimbursed by 
the
      Administrator for Class A, Class B  and Class C were $0.0289, $0.0102  
and
      $0.0001, respectively.
(2)   Total return represents aggregate total return for the period indicated.
(3)   Full  amount of shares offered to the public on December 27, 1993 and 
were
      redeemed on December 28,  1993, therefore, total return  deemed not to  
be
      meaningful.
(4)   Total net assets for Class C was $100 at January 31, 1994.
</TABLE>
    
 
                                       3
<PAGE>
   
<TABLE>
<S>   <C>
(5)   Annualized.
(6)   Annualized expense ratio before waiver of fees by the Investment 
Adviser,
      Administrator, Custodian and Transfer Agent and expenses reimbursed by 
the
      Administrator for Class A, Class B and Class C were 0.33%, 0.58% and
      0.68%, respectively.
</TABLE>
    
 
                       INVESTMENT OBJECTIVE AND POLICIES
 
   
IN GENERAL
    
   
    The  Fund's investment objective is to  provide current income and 
stability
of principal. In pursuing its investment objective, the Fund, which operates  
as
a  diversified  investment portfolio,  invests in  a  broad range  of short-
term
instruments, including U.S. government and U.S. bank and commercial  
obligations
and repurchase agreements relating to such obligations.
    
 
   
    PRICE  AND PORTFOLIO MATURITY.  The Fund invests only in securities that 
are
purchased with  and payable  in U.S.  dollars  and that  have (or,  pursuant  
to
regulations adopted by the Securities and Exchange Commission, will be deemed 
to
have) remaining maturities of thirteen months or less at the date of purchase 
by
the  Fund. The Fund maintains a dollar-weighted average portfolio maturity of 
90
days or less. The Fund follows these  policies to maintain a constant net  
asset
value  of $1.00 per share, although there is no assurance that it can do so on 
a
continuing basis.
    
 
    PORTFOLIO QUALITY AND DIVERSIFICATION.   The Fund  will limit its  
portfolio
investments  to securities that the Trust's Board of Trustees determines 
present
minimal credit risks and which are "First Tier Eligible Securities" at the  
time
of  acquisition by  the Fund. The  term First Tier  Eligible Securities 
includes
securities rated  by the  "Requisite NRSROs"  in the  highest short-term  
rating
categories,  securities of issuers that have  received such ratings with 
respect
to  other  short-term  debt   securities  and  comparable  unrated   
securities.
"Requisite  NRSROs" means (a)  any two nationally  recognized statistical 
rating
organizations ("NRSROs") that have issued a rating with respect to a security 
or
class of debt obligations of an issuer, or (b) one NRSRO, if only one NRSRO  
has
issued such a rating at the time that the Fund acquires the security. 
Currently,
there  are six NRSROs: Standard & Poor's Corporation, Moody's Investors 
Service,
Inc., Fitch Investors Services,  Inc., Duff and Phelps,  Inc., IBCA Limited  
and
its  affiliate, IBCA,  Inc. and Thomson  Bankwatch. A discussion  of the 
ratings
categories of  the NRSROs  is contained  in  the Appendix  to the  Statement  
of
Additional  Information. The Fund generally  may not invest more  than 5% of 
its
total assets in  the securities of  any one issuer,  except for U.S.  
government
securities.
 
    The  following descriptions illustrate the kinds of instruments in which 
the
Fund invests:
 
    The Fund may purchase U.S. bank and bank holding company obligations such 
as
commercial paper, notes, certificates of deposit, bankers' acceptances and  
time
deposits,  including instruments issued  or supported by  the credit of 
domestic
banks or savings  institutions having total  assets at the  time of purchase  
in
excess  of $1 billion. The Fund  may also make interest-bearing savings 
deposits
in commercial and savings  banks in amounts  not in excess of  5% of the  
Fund's
assets.
 
    The  Fund may invest  in commercial paper  and other short-term 
obligations.
The Fund may not invest in commercial paper or obligations of foreign issuers.
 
                                       4
<PAGE>
   
    The Fund may purchase variable or  floating rate notes, which are  
unsecured
instruments  that provide for adjustments in  the interest rate on certain 
reset
dates or whenever a  specified interest rate  index changes, respectively.  
Such
notes  may not be actively traded in a secondary market, but, in some cases, 
the
Fund may  be able  to  resell such  notes in  the  dealer market.  Variable  
and
floating  notes typically are rated by credit rating agencies, and their 
issuers
must satisfy the same quality criteria as  set forth above. The Fund invests  
in
variable  or  floating rate  notes only  when the  Investment Adviser  deems 
the
investment to involve minimal credit risk.
    
 
    The Fund may purchase instruments from financial institutions, such as 
banks
and broker-dealers, subject to the seller's  agreement to repurchase them at  
an
agreed  upon  time  and  price ("repurchase  agreements").  The  seller  under 
a
repurchase agreement will be  required to maintain the  value of the  
securities
subject  to the agreement at not less  than the repurchase price. Default by 
the
seller would,  however, expose  the Fund  to possible  loss because  of  
adverse
market  action or  delay in  connection with  the disposition  of the 
underlying
obligations.
 
    The Fund may also purchase securities on a "when-issued" basis.  When-
issued
securities  are securities purchased  for delivery beyond  the normal 
settlement
date at a  stated price  and yield.  The Fund will  generally not  pay for  
such
securities or start earning interest on them until they are received. 
Securities
purchased  on a when-issued  basis are recorded  as an asset  and are subject 
to
changes in value based upon changes in the general level of interest rates.  
The
Fund expects that commitments to purchase when-issued securities will not 
exceed
25%  of the value of its total assets absent unusual market conditions. The 
Fund
does not intend to purchase when-issued securities for speculative purposes  
but
only in furtherance of its investment objective.
 
    The  Fund  may  purchase  obligations  issued  or  guaranteed  by  the  
U.S.
government  or  its  agencies  and  instrumentalities.  Obligations  of  
certain
agencies  and instrumentalities  of the U.S.  government are backed  by the 
full
faith and credit of  the United States.  Others are backed by  the right of  
the
issuer  to borrow from the U.S. Treasury or are backed only by the credit of 
the
agency or instrumentality issuing the obligation.
 
    In addition, the Fund  may, when deemed appropriate  in light of the  
Fund's
investment  objective, invest in high  quality, short-term obligations issued 
by
the state and local governmental issuers which carry yields that are 
competitive
with those of other types of money market instruments of comparable quality.
 
    The Fund will not knowingly invest more  than 10% of the value of its  
total
assets in illiquid securities, including time deposits and repurchase 
agreements
having maturities longer than seven days. Securities that have readily 
available
market  quotations  are  not deemed  illiquid  for purposes  of  this 
limitation
(irrespective of any legal or contractual restrictions on resale). The Fund  
may
invest  in commercial obligations  issued in reliance  on the so-called 
"private
placement"  exemption  from  registration  afforded  by  Section  4(2)  of   
the
Securities  Act of 1933,  as amended ("Section  4(2) paper"). The  Fund may 
also
purchase securities that are not registered under the Securities Act of 1933, 
as
amended, but which can be sold  to qualified institutional buyers in  
accordance
with  Rule 144A under that  Act ("Rule 144A securities").  Section 4(2) paper 
is
restricted as to disposition under the federal securities laws, and generally 
is
sold to  institutional  investors such  as  the Fund  who  agree that  they  
are
purchasing  the paper for investment and not with a view to public 
distribution.
Any resale by the purchaser must be in an exempt transaction. Section 4(2) 
paper
normally is resold  to other institutional  investors like the  Fund through  
or
with the assistance of the issuer or investment dealers who make a market in 
the
Section
 
                                       5
<PAGE>
   
4(2)  paper, thus  providing liquidity. Rule  144A securities  generally must 
be
sold to  other qualified  institutional buyers.  If a  particular investment  
in
Section  4(2) paper or Rule 144A securities is not determined to be liquid, 
that
investment will be included within the 10% limitation on investment in  
illiquid
securities.
    
 
    There  can  be  no  assurance  that the  Fund  will  achieve  its 
investment
objective.
 
INVESTMENT LIMITATIONS
 
   
    The Fund's investment  objective and  the policies described  above are  
not
fundamental  and may be changed by the  Trust's Board of Trustees without a 
vote
of shareholders. If  there is a  change in the  investment objective,  
investors
should  consider whether the Fund remains  an appropriate investment in light 
of
their  then  current  financial  position  and  needs.  The  Fund's   
investment
limitations  summarized below may not be changed without the affirmative vote 
of
the holders of a  majority of its  outstanding shares. (A  complete list of  
the
investment  limitations that cannot be changed without a vote of shareholders 
is
contained in the Statement of Additional Information under "Investment 
Objective
and Policies.")
    
 
The Fund may not:
 
        1.  Borrow money, except from  banks for temporary purposes and then  
in
    amounts  not in excess of 10% of the  value of the Fund's assets at the 
time
    of such borrowing; or pledge any  assets except in connection with any  
such
    borrowing  and in amounts not in excess  of the lesser of the dollar 
amounts
    borrowed or  10% of  the value  of the  Fund's assets  at the  time of  
such
    borrowing. Additional investments will not be made when borrowings exceed 
5%
    of the Fund's assets.
 
        2.   Purchase any securities which would  cause 25% or more of the 
value
    of its total assets at the time of purchase to be invested in the 
securities
    of issuers  conducting  their  principal business  activities  in  the  
same
    industry,  provided that there is no  limitation with respect to 
investments
    in U.S. government obligations and obligations of domestic banks.
 
                       PURCHASE AND REDEMPTION OF SHARES
 
PURCHASE PROCEDURES
 
   
    Shares of the Fund  are sold at the  net asset value per  share of the  
Fund
next  determined  after receipt  of  a purchase  order  by Lehman  Brothers, 
the
Distributor of the Fund's shares. Purchase  orders for shares are accepted  
only
on days on which both Lehman Brothers and the Federal Reserve Bank of Boston 
are
open  for business and must  be transmitted to Lehman  Brothers, by telephone 
at
1-800-851-3134. Orders received prior to  noon, Eastern time, for which  
payment
has  been received by Boston Safe Deposit and Trust Company ("Boston Safe"), 
the
Fund's Custodian, will  be executed at  noon. Orders received  between noon  
and
3:00 P.M., Eastern time, will be executed at 3:00 P.M., Eastern time, if 
payment
has  been received by Boston Safe by 3:00 P.M. and will be executed at 4:00 
P.M.
if payment has been received by 4:00  P.M. Orders received after 3:00 P.M.,  
and
orders  for which payment has not been received by 4:00 P.M., Eastern time, 
will
not be accepted, and notice thereof will be given to the institution placing 
the
order. Payment for  Fund shares may  be made only  in federal funds  
immediately
available to Boston Safe. (Payment for orders which are not received or 
accepted
by  Lehman  Brothers  will  be  returned after  prompt  inquiry  to  the 
sending
institution.) The Fund may in its discretion reject any order for shares.
    
 
                                       6
<PAGE>
   
    The minimum aggregate initial investment by an institution in the 
investment
portfolios that comprise  the Trust is  $1 million (with  not less than  
$25,000
invested  in  any  one  investment portfolio  offered  by  the  Trust); 
however,
broker-dealers and other institutional  investors may set  a higher minimum  
for
their  customers. To reach the  minimum Trust-wide initial investment, 
purchases
of shares may be  aggregated over a  period of six months.  There is no  
minimum
subsequent investment.
    
 
   
    Conflict  of interest restrictions may apply  to an institution's receipt 
of
compensation paid by  the Fund in  connection with the  investment of  
fiduciary
funds  in Class B or  Class C shares. See  also "Management of the Fund--
Service
Organizations." Institutions, including  banks regulated by  the Comptroller  
of
the  Currency and  investment advisers and  other money managers  subject to 
the
jurisdiction of the Securities and Exchange Commission, the Department of  
Labor
or  state  securities commissions,  are urged  to  consult their  legal 
advisors
before investing fiduciary funds in Class B or Class C shares.
    
 
   
    SUBACCOUNTING SERVICES.  Institutions are  encouraged to open single  
master
accounts.  However, certain  institutions may wish  to use  the Transfer 
Agent's
subaccounting system to minimize their internal recordkeeping requirements.  
The
Transfer  Agent  charges a  fee  based on  the  level of  subaccounting 
services
rendered. Institutions holding Fund shares in a fiduciary, agency, custodial  
or
similar  capacity may charge or pass through subaccounting fees as part of or 
in
addition to normal trust or agency account  fees. They may also charge fees  
for
other  services provided which may  be related to the  ownership of Fund 
shares.
This Prospectus should, therefore, be  read together with any agreement  
between
the  customer and the institution with regard to the services provided, the 
fees
charged for those services and any restrictions and limitations imposed.
    
 
REDEMPTION PROCEDURES
 
   
    Redemption orders must  be transmitted  to Lehman Brothers  by telephone  
at
1-800-851-3134.  Payment for  redeemed shares  for which  a redemption  order 
is
received by Lehman Brothers before 3:00 P.M.,  Eastern time, on a day that  
both
Lehman  Brothers and the Federal Reserve Bank of Boston are open for business 
is
normally made in federal  funds wired to the  redeeming shareholder on the  
same
business day. Payment for redemption orders which are received between 3:00 
P.M.
and  4:00 P.M.,  Eastern time, is  normally wired  in federal funds  on the 
next
business day following redemption.
    
 
   
    Shares are redeemed at the net  asset value per share next determined  
after
Lehman  Brothers' receipt of the redemption order. While the Fund intends to 
use
its best  efforts to  maintain  its net  asset value  per  share at  $1.00,  
the
proceeds paid to an investor upon redemption may be more or less than the 
amount
invested  depending upon a share's net asset value at the time of redemption. 
To
allow the Fund's Investment  Adviser to manage  the Fund effectively,  
investors
are  strongly urged to initiate all investments or redemptions of Fund shares 
as
early in the day as possible and to  notify Lehman Brothers at least one day  
in
advance of transactions in excess of $5 million.
    
 
   
    The  Fund reserves the  right to wire redemption  proceeds within seven 
days
after receiving  the redemption  order if,  in the  judgment of  the  
Investment
Adviser, an earlier payment could adversely affect the Fund. The Fund shall 
have
the right to redeem involuntarily shares in any account at their net asset 
value
if  the value of the  account is less than $10,000  after 60 days' prior 
written
notice to the investor. Any such redemption  shall be effected at the net  
asset
value per share next determined after the redemption order is entered. If 
during
the  60-day period the investor increases the value of its account to $10,000 
or
more, no such  redemption shall  take place. In  addition, the  Fund may  
redeem
shares   involuntarily  or  suspend   the  right  of   redemption  as  
permitted
    
 
                                       7
<PAGE>
under the Investment Company Act of 1940, as amended (the "1940 Act"), or  
under
certain   special  circumstances  described  in   the  Statement  of  
Additional
Information under "Additional Purchase and Redemption Information."
 
   
VALUATION OF SHARES--NET ASSET VALUE
    
   
    The Fund's net asset  value per share for  purposes of pricing purchase  
and
redemption  orders is  determined by the  Fund's Administrator as  of noon, 
3:00
P.M. and 4:00 P.M., Eastern time, on  each weekday, with the exception of  
those
holidays  on which either Lehman Brothers or  the Federal Reserve Bank of 
Boston
is closed.  Currently, one  or both  of  these institutions  are closed  on  
the
customary  national business  holidays of  New Year's  Day, Martin  Luther 
King,
Jr's. Birthday (observed), Presidents' Day (Washington's Birthday), Good 
Friday,
Memorial Day, Independence  Day, Labor  Day, Columbus  Day (observed),  
Veterans
Day,  Thanksgiving  Day  and  Christmas  Day, and  on  the  preceding  Friday 
or
subsequent Monday when  one of  these holidays falls  on a  Saturday or  
Sunday,
respectively.  The net  asset value  per share of  Fund shares  is calculated 
by
adding the value  of all securities  and other assets  of the Fund,  
subtracting
liabilities,  and  dividing  the  result  by  the  total  number  of  the 
Fund's
outstanding shares (irrespective of class or sub-class). In computing net  
asset
value,  the Fund uses the amortized cost method of valuation as described in 
the
Statement of Additional  Information under "Additional  Purchase and  
Redemption
Information."  The  Fund's net  asset value  per share  for purposes  of 
pricing
purchase and  redemption orders  is determined  independently of  the net  
asset
values of the shares of the Trust's other investment portfolios.
    
 
   
OTHER MATTERS
    
    Fund  shares are sold and redeemed without charge by the Fund. 
Institutional
investors purchasing  or holding  Fund shares  for their  customer accounts  
may
charge  customers  fees  for  cash management  and  other  services  provided 
in
connection with their accounts. A customer should, therefore, consider the 
terms
of its account with an institution before purchasing Fund shares. An 
institution
purchasing or redeeming Fund  shares on behalf of  its customers is  
responsible
for  transmitting  orders to  Lehman Brothers  in  accordance with  its 
customer
agreements.
 
   
                                   DIVIDENDS
    
 
   
    ** 1  Investors of  the Fund  are entitled  to dividends  and  
distributions
arising only from the net investment income and capital gains, if any, earned 
on
investments held by the Fund. The Fund's net investment income is declared 
daily
as  a dividend to shares held  of record at the close  of business on the day 
of
declaration. Shares begin accruing dividends on  the day the purchase order  
for
the  shares is executed and continue to accrue dividends through, and 
including,
the day before the  redemption order for the  shares is executed. Dividends  
are
paid  monthly by wire transfer,  within five business days  after the end of 
the
month or within five business  days after a redemption  of all of an  
investor's
shares  of a particular class. The Fund does not expect to realize net long-
term
capital gains.
    
 
   
    ** 2 Dividends are determined  in the same manner and  are paid in the  
same
amount  for each Fund share, except that Class B and Class C shares bear all 
the
expense of fees paid to Service Organizations.  As a result, at any given  
time,
the net yield on Class B and Class C shares will be .25% and .35%, 
respectively,
lower than the net yield on Class A shares.
    
 
                                       8
<PAGE>
   
    Institutional  shareholders may elect to  have their dividends reinvested 
in
additional full and fractional shares of  the same class of shares with  
respect
to  which such dividends are  declared at the net asset  value of such shares 
on
the payment  date.  Reinvested  dividends  receive the  same  tax  treatment  
as
dividends  paid in cash. Such election, or  any revocation thereof, must be 
made
in writing  to the  Fund's  Distributor, at  260  Franklin Street,  15th  
Floor,
Boston, Massachusetts 02110-9624, and will become effective after its receipt 
by
the Distributor, with respect to dividends paid.
    
 
   
    **  3 TSSG,  as Transfer  Agent, will send  each investor  or its 
authorized
representative, if  any, an  annual  statement designating  the amount,  of  
any
dividends  and  capital  gains distributions  made  during each  year  and 
their
federal tax qualification.
    
 
   
                                     TAXES
    
 
   
    The Fund qualified in its last taxable year and intends to qualify in 
future
years as a  "regulated investment company"  under the Internal  Revenue Code  
of
1986,  as amended  (the "Code"). A  regulated investment company  is exempt 
from
federal income tax on amounts distributed to its investors.
    
 
   
    ** 4 Qualification as  a regulated investment company  under the Code for  
a
taxable  year  requires, among  other things,  that the  Fund distribute  to 
its
investors at least 90% of its  investment company taxable income for such  
year.
In  general, the  Fund's investment company  taxable income will  be its 
taxable
income (including dividends  and short-term  capital gains, if  any) subject  
to
certain  adjustments and excluding the excess  of any net long-term capital 
gain
for the taxable  year over the  net short-term  capital loss, if  any, for  
such
year. The Fund intends to distribute substantially all of its investment 
company
taxable  income each year. Such distributions will be taxable as ordinary 
income
to Fund  investors who  are  not currently  exempt  from federal  income  
taxes,
whether  such income is received in cash  or reinvested in additional shares. 
It
is anticipated that none  of the Fund's distributions  will be eligible for  
the
dividends  received  deduction for  corporations. The  Fund  does not  expect 
to
realize long-term capital gains and, therefore, does not contemplate payment  
of
any "capital gain dividends" as described in the Code.
    
 
   
    ** 5 Dividends declared in October, November or December of any year 
payable
to investors of record on a specified date in such months will be deemed to 
have
been  received by the investors and paid by the Fund on December 31 of such 
year
in the event such  dividends are actually paid  during January of the  
following
year.
    
 
   
    **  6 Investors will be  advised at least annually  as to the federal 
income
tax status of distributions made to them each year.
    
 
   
    ** 7  The foregoing  discussion  is only  a brief  summary  of some  of  
the
important  federal  tax  considerations  generally affecting  the  Fund  and 
its
investors. No attempt is made to present a detailed explanation of the  
federal,
state  or local  income tax  treatment of  the Fund  or its  investors, and 
this
discussion  is  not  intended  as   a  substitute  for  careful  tax   
planning.
Accordingly,  potential investors in the Fund  should consult their tax 
advisors
with specific reference to their own tax situation.
    
 
                             MANAGEMENT OF THE FUND
 
    The business and affairs of the Fund are managed under the direction of  
the
Trust's  Board  of Trustees.  The  Trustees approve  all  significant 
agreements
between   the   Trust    and   the   persons    or   companies   that    
furnish
 
                                       9
<PAGE>
   
services  to  the Fund,  including agreements  with its  Distributor, 
Investment
Adviser, Administrator, Custodian and Transfer Agent. The day-to-day  
operations
of  the Fund are  delegated to the Fund's  Investment Adviser and 
Administrator.
The Statement of Additional  Information relating to  the Fund contains  
general
background  information  regarding each  Trustee  and executive  officer  of 
the
Trust.
    
 
   
DISTRIBUTOR
    
   
    Lehman Brothers, located  at 3 World  Financial Center, New  York, New  
York
10285,  is the Distributor of the Fund's shares. Lehman Brothers, a leading 
full
service investment  firm,  meets the  diverse  financial needs  of  
individuals,
institutions  and governments around the world. Lehman Brothers has entered 
into
a  Distribution  Agreement  with  the  Trust  pursuant  to  which  it  has   
the
responsibility for distributing shares of the Fund.
    
 
   
INVESTMENT ADVISER--LEHMAN BROTHERS GLOBAL ASSET MANAGEMENT INC.
    
   
    Lehman  Brothers Global Asset Management Inc.  ("LBGAM"), located at 3 
World
Financial Center, New  York, New  York 10285,  serves as  the Fund's  
Investment
Adviser.  LBGAM is  a wholly owned  subsidiary of Lehman  Brothers Holdings 
Inc.
("Holdings"). LBGAM, together with the other Lehman Brothers investment 
advisory
affiliates serves  as Investment  Adviser to  investment companies  and  
private
accounts  and  has assets  under management  in  excess of  [$15] billion  as 
of
___________, 1994.
    
 
   
    As  Investment  Adviser  to  the  Fund,  LBGAM  will  among  other   
things,
participate  in  the  formulation  of the  Fund's  investment  policies, 
analyze
economic trends  affecting  the Fund  ,  and  monitor and  evaluate  the  
Fund's
investment objective and policies and the Fund's investment performance. For 
its
services  LBGAM is entitled to receive a monthly fee from the Fund at the 
annual
rate of .10% of the value of the Fund's average daily net assets. For the 
period
February 8,  1993  (commencement  of  operations) to  January  31,  1994,  
LBGAM
received  an advisory fee from the Fund in  the amount of .__% of, average 
daily
net assets.
    
 
   
ADMINISTRATOR AND TRANSFER AGENT--THE SHAREHOLDER SERVICES GROUP, INC.
    
   
    The Shareholder  Services  Group, Inc.  ("TSSG"),  located at  One  
Exchange
Place,  53  State  Street  Boston, Massachusetts  02109,  serves  as  the 
Fund's
Administrator and Transfer  Agent. TSSG is  a wholly owned  subsidiary of  
First
Data  Corporation. As Administrator, TSSG calculates  the net asset value of 
the
Fund's shares and generally assists in all aspects of the Fund's  
administration
and  operation. As  compensation for TSSG's  services as  Administrator, TSSG 
is
entitled to receive from the  Fund a monthly fee at  the annual rate of .10%  
of
the  value of  the Fund's  average daily  net assets.  TSSG is  also entitled 
to
receive a fee from the Fund for its services as Transfer Agent. TSSG pays 
Boston
Safe, the Fund's  Custodian, a  portion of  its monthly  administration fee  
for
custody services rendered to the Fund.
    
 
   
CUSTODIAN--BOSTON SAFE DEPOSIT AND TRUST COMPANY
    
   
    Boston  Safe, a wholly owned subsidiary of The Boston Company, Inc., 
located
at  One  Boston  Place,  Boston,  Massachusetts  02108,  serves  as  the  
Fund's
Custodian.
    
 
SERVICE ORGANIZATIONS
 
   
    Financial  institutions, such  as banks,  savings and  loan associations 
and
other such institutions ("Service Organizations") and/or institutional 
customers
of Service Organizations may  purchase Class B or  Class C shares. These  
shares
are  identical in all respects to Class A  shares except that they bear the 
fees
described below and enjoy certain exclusive voting rights on matters relating 
to
these fees. The Fund will enter into an agreement
    
 
                                       10
<PAGE>
   
with each Service Organization whose customers ("Customers") are the  
beneficial
owners  of Class B or  Class C shares that  requires the Service Organization 
to
provide certain services to Customers in consideration of the Fund's payment  
of
service  fees at the annual  rate of .25% or  .35%, respectively, of the 
average
daily net asset value of the  respective Class beneficially owned by  
Customers.
Such  services, which  are described more  fully in the  Statement of 
Additional
Information under  "Management  of the  Fund's  -- Service  Organizations,"  
may
include  aggregating  and  processing  purchase  and  redemption  requests  
from
Customers and placing net purchase  and redemption orders with Lehman  
Brothers;
processing  dividend payments  from the Fund  on behalf  of Customers; 
providing
information  periodically  to  Customers  showing  their  positions  in  
shares;
arranging  for  bank wires;  responding to  Customer  inquiries relating  to 
the
services provided  by  the  Service Organization  and  handling  
correspondence;
acting as shareholder of record and nominee; and providing reasonable 
assistance
in  connection with the  distribution of shares  to Customers. Services 
provided
with respect  to  Class B  shares  will generally  be  more limited  than  
those
provided  with respect  to Class  C shares. Under  the terms  of the 
agreements,
Service Organizations are required to provide  to their Customers a schedule  
of
any  fees that they may charge Customers in connection with their investments 
in
Class B or Class  C shares. Class  A shares are  sold to financial  
institutions
that have not entered into servicing agreements with the Fund in connection 
with
their  investments.  A  salesperson and  any  other person  entitled  to 
receive
compensation for selling or servicing shares  of the Fund may receive  
different
compensation for selling or servicing one Class of shares over another Class.
    
 
EXPENSES
 
   
    The  Fund bears  all its  own expenses.  The Fund's  expenses include 
taxes,
interest, fees and  salaries of the  Trust's trustees and  officers who are  
not
directors,  officers or employees of  the Fund's service contractors, 
Securities
and Exchange  Commission fees,  state securities  qualification fees,  costs  
of
preparing and printing prospectuses for regulatory purposes and for 
distribution
to  investors,  advisory  and  administration fees,  charges  of  the 
custodian,
transfer agent and dividend disbursing agent, Service Organization fees, 
certain
insurance premiums, outside  auditing and legal  expenses, costs of  
shareholder
reports  and shareholder meetings and any  extraordinary expenses. The Fund 
also
pays for brokerage fees and commissions (if any) in connection with the 
purchase
and sale of  portfolio securities. In  order to maintain  a competitive  
expense
ratio  during 1994, LBGAM and TSSG have agreed voluntarily to reimburse the 
Fund
if and to the extent that the Fund's total operating expenses (other than 
taxes,
interest, brokerage fees and commissions, Rule 12b-1 fees under the 1940 Act 
and
extraordinary expenses) exceed .16% of average daily net assets through 
December
31,  1994.  The  Investment  Adviser   and  Administrator  intend  to   
continue
voluntarily  to  reimburse  the Fund  to  the  extent necessary  to  maintain 
an
annualized expense ratio at a  level no greater than  .18% of average daily  
net
assets  thereafter.  This voluntary  reimbursement  will not  be  changed 
unless
investors are provided  at least  60 days'  advance notice.  In addition,  
these
service  providers have agreed to  reimburse the Fund to  the extent required 
by
applicable state law for certain expenses that are described in the Statement 
of
Additional Information  relating  to  the  Fund. Any  fees  charged  by  
Service
Organizations  or other institutional investors to their customers in 
connection
with investments in Fund shares are not reflected in the Fund's expenses.
    
 
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                                       11
<PAGE>
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                                     YIELDS
 
   
    From time to time the "yields" and  "effective yields" for Class A, Class  
B
and  Class C shares may be quoted  in advertisements or in reports to 
investors.
Yield quotations are computed separately for  each Class of shares. The  
"yield"
quoted in advertisements for a particular class or sub-class of shares refers 
to
the  income generated by  an investment in  such shares over  a specified 
period
(such as a  seven-day period) identified  in the advertisement.  This income  
is
then  "annualized;" that  is, the amount  of income generated  by the 
investment
during that period is assumed to be generated each such period over a 52-week 
or
one-year period and is shown as  a percentage of the investment. The  
"effective
yield"  is calculated  similarly but, when  annualized, the income  earned by 
an
investment in a particular class or  sub-class is assumed to be reinvested.  
The
"effective  yield"  will be  slightly  higher than  the  "yield" because  of 
the
compounding effect of this assumed reinvestment.
    
 
   
    The Fund's  yields may  be compared  to  those of  other mutual  funds  
with
similar  objectives, to stock or other relevant indices, or to rankings 
prepared
by independent services or other financial or industry publications that 
monitor
the performance of mutual funds. For example, such data are reported in 
national
financial publications such  as IBC/DONOGHUE'S  MONEY FUND  REPORT-R-, THE  
WALL
STREET  JOURNAL and  THE NEW YORK  TIMES, reports prepared  by LIPPER 
ANALYTICAL
SERVICE, INC. and publications of a local or regional nature.
    
 
   
    THE FUND'S YIELD FIGURES FOR A  CLASS OF SHARES REPRESENT PAST  
PERFORMANCE,
WILL FLUCTUATE AND SHOULD NOT BE CONSIDERED AS REPRESENTATIVE OF FUTURE 
RESULTS.
The  yield of any  investment is generally  a function of  portfolio quality 
and
maturity, type of investment and operating expenses. Since holders of Class B 
or
Class  C  shares  bear  the  service  fees  for  services  provided  by  
Service
Organizations, the net yield on such shares can be expected at any given time 
to
be  lower than  the net  yield on Class  A shares.  Any fees  charged by 
Service
Organizations or other  institutional investors directly  to their customers  
in
connection  with  investments in  Fund shares  are not  reflected in  the 
Fund's
expenses or yields. The methods used to compute the Fund's yields are  
described
in  more detail in  the Statement of Additional  Information. Investors may 
call
1-800-238-2560 (Class A  shares code:  001; Class B  shares code:  101; Class  
C
shares code: 201) to obtain current yield information.
    
 
   
                             DESCRIPTION OF SHARES
    
 
    The  Trust is  a Massachusetts  business trust  established on  November 
25,
1992.
 
   
    The Trust's Declaration of Trust authorizes  the Board of Trustees to  
issue
an  unlimited number of full and fractional shares of beneficial interest in 
the
Trust and  to  classify or  reclassify  any unissued  shares  into one  or  
more
additional  classes of  shares. The Trust  is an  open-end management 
investment
company, which offers twelve portfolios: Prime Money Market Fund (Class A, 
Class
B and Class C),  Prime Value Money Market  Fund (Class A, Class  B, Class C  
and
Class  D), Government Obligations Money  Market Fund (Class A,  Class B, Class 
C
and Class D), 100%  Government Obligations Money Market  Fund (Class A, Class  
B
and  Class C), Treasury Instruments  Money Market Fund II  (Class A, Class B 
and
Class C), 100%  Treasury Instruments  Money Market Fund  (Class A,  Class B  
and
Class  C), Tax-Free Money Market Fund (Class  A, Class B and Class C), 
Municipal
    
 
                                       12
<PAGE>
   
Money Market Fund (Class A, Class B, Class C and Class D), California  
Municipal
Money  Market Fund  (Class A,  Class B  and Class  C), New  York Municipal 
Money
Market Fund (Class A, Class B and  Class C), Floating Rate U.S. Government  
Fund
(Class A and Class B) and Short Duration U.S. Government Fund (Class A and 
Class
B). Shares of the New York Municipal Money Market Fund are not currently sold 
to
the public. The Declaration of Trust further authorizes the Trustees to 
classify
or reclassify any class of shares into one or more sub-classes.
    
 
   
    THIS  PROSPECTUS AND  THE STATEMENT  OF ADDITIONAL  INFORMATION 
INCORPORATED
HEREIN RELATE PRIMARILY TO THE FUND  AND DESCRIBE ONLY THE INVESTMENT  
OBJECTIVE
AND  POLICIES, OPERATIONS,  CONTRACTS AND  OTHER MATTERS  RELATING TO  THE 
FUND.
INVESTORS WISHING  TO OBTAIN  SIMILAR INFORMATION  REGARDING THE  TRUST'S  
OTHER
PORTFOLIOS MAY OBTAIN SEPARATE PROSPECTUSES DESCRIBING THEM BY CONTACTING 
LEHMAN
BROTHERS AT 1-800-368-5556.
    
 
    The  Trust does not presently intend to hold annual meetings of 
shareholders
except as required by the 1940 Act or other applicable law. The Trust will  
call
a meeting of shareholders for the purpose of voting upon the question of 
removal
of a member of the Board of Trustees upon written request of shareholders 
owning
at least 10% of the outstanding shares of the Trust entitled to vote.
 
    Each  Fund share represents  an equal, proportionate  interest in the 
assets
belonging to  the Fund.  Each share,  which has  a par  value of  $.001, has  
no
preemptive  or conversion rights.  When issued for payment  as described in 
this
Prospectus, Fund shares will be fully paid and non-assessable.
 
    Holders of the Fund's shares will vote in the aggregate and not by class  
on
all matters, except where otherwise required by law and except that only Class 
B
or  Class C  shares, as the  case may  be, will be  entitled to  vote on 
matters
submitted to a vote of shareholders  pertaining to the Fund's arrangements  
with
Service  Organizations with respect to the relevant Class. Further, 
shareholders
of the Fund and of the Trust's  other portfolios will vote in the aggregate  
and
not  by  portfolio except  as otherwise  required by  law or  when the  Board 
of
Trustees determines that the matter to be voted upon affects only the  
interests
of  the shareholders of a particular portfolio. (See the Statement of 
Additional
Information under "Additional Description  Concerning Fund Shares" for  
examples
where  the 1940 Act requires voting by portfolio.) Shareholders of the Trust 
are
entitled to  one  vote  for each  full  share  held (irrespective  of  class  
or
portfolio)  and fractional votes  for fractional shares  held. Voting rights 
are
not cumulative; and, accordingly, the holders of more than 50% of the  
aggregate
shares of the Trust may elect all of the trustees.
 
    For  information  concerning  the  redemption of  Fund  shares  and 
possible
restrictions on their transferability, see "Purchase and Redemption of 
Shares."
 
                                       13
<PAGE>
                LEHMAN BROTHERS INSTITUTIONAL FUNDS GROUP TRUST
 
   
                            Prime Money Market Fund
                         Prime Value Money Market Fund
                    Government Obligations Money Market Fund
                 100% Government Obligations Money Market Fund
                   Treasury Instruments Money Market Fund II
                  100% Treasury Instruments Money Market Fund
                          Municipal Money Market Fund
                           Tax-Free Money Market Fund
                     California Municipal Money Market Fund
                      New York Municipal Money Market Fund
    
 
                            ------------------------
 
   
                       Floating Rate U.S. Government Fund
                      Short Duration U.S. Government Fund
    
                            ------------------------
 
   
NO  PERSON  HAS  BEEN  AUTHORIZED  TO  GIVE  ANY  INFORMATION  OR  TO  MAKE  
ANY
REPRESENTATIONS NOT CON-TAINED IN THIS PROSPECTUS, OR IN THE FUND'S STATEMENT 
OF
ADDITIONAL INFORMATION INCORPORATED HEREIN BY REFERENCE, IN CONNECTION WITH  
THE
OFFERING  MADE BY  THIS PROSPECTUS  AND, IF GIVEN  OR MADE,  SUCH INFORMATION 
OR
REPRESENTATIONS MUST NOT BE RELIED UPON  AS HAVING BEEN AUTHORIZED BY THE  
TRUST
OR ITS DISTRIBUTOR. THIS PROSPECTUS DOES NOT CONSTITUTE AN OFFERING BY THE 
TRUST
OR  BY  THE DISTRIBUTOR  IN  ANY JURISDICTION  IN  WHICH SUCH  OFFERING  MAY 
NOT
LAWFULLY BE MADE.
    
                             ---------------------
                               TABLE OF CONTENTS
 
   
<TABLE>
<CAPTION>
                                                 PAGE
                                              -----------
<S>                                           <C>
Background and Expense Information..........           2
Financial Highlights........................           3
Investment Objective and Policies...........           4
Purchase and Redemption of Shares...........           6
Dividends...................................           8
Taxes.......................................           9
Management of the Fund......................           9
Yields......................................          12
Description of Shares.......................          12
</TABLE>
    
 
                                  PRIME MONEY
                                  MARKET FUND
 
                              -------------------
 
   
                                   PROSPECTUS
                                  May __, 1994
    
 
                             ---------------------
 
                                LEHMAN BROTHERS
 
   
THIS PROSPECTUS AND THE STATEMENT OF ADDITIONAL INFORMATION INCORPORATED 
HEREIN
  RELATE PRIMARILY TO THE FUND AND DESCRIBE ONLY THE INVESTMENT OBJECTIVE AND
    POLICIES, OPERATIONS, CONTRACTS AND OTHER MATTERS RELATING TO THE FUND.
  INVESTORS WISHING TO OBTAIN SIMILAR INFORMATION REGARDING THE TRUST'S OTHER
PORTFOLIOS MAY OBTAIN SEPARATE PROSPECTUSES DESCRIBING THEM BY CONTACTING 
LEHMAN
                          BROTHERS AT 1-800-368-5556.
    


<PAGE>
PROSPECTUS
                  100% TREASURY INSTRUMENTS MONEY MARKET FUND
 
                       An Investment Portfolio Offered By
                Lehman Brothers Institutional Funds Group Trust
 
   
    Lehman  Brothers Institutional Funds Group Trust (the "Trust") is a no-
load,
open-end, management investment company. The shares described in this 
Prospectus
represent interests in the 100% Treasury Instruments Money Market Fund 
portfolio
(the "Fund"), one of a family of money market portfolios of the Trust.
    
   
    To the extent permissible by federal  and state law, the Fund is  
structured
to  provide shareholders with income that is exempt or excluded from taxation 
at
the state and local level. See "Taxes." The Fund is also designed to provide  
an
economical  and convenient means for the  investment of short-term funds held 
by
banks,  trust  companies,  corporations,   employee  benefit  plans  and   
other
institutional  investors. The  investment objective  of the  Fund is  to 
provide
current income with liquidity and security of principal. The Fund invests 
solely
in U.S. Treasury bills, notes and direct obligations of the U.S. Treasury.
    
 
   
    Fund shares may not be purchased by individuals directly, but  
institutional
investors  may purchase shares for accounts  maintained by individuals. The 
Fund
currently offers  three  classes of  shares.  In  addition to  Class  A  
shares,
institutional  investors may  purchase on behalf  of their customers  Class B 
or
Class C shares which accrue daily dividends in the same manner as Class A 
shares
but bear all  fees payable by  the Fund to  institutional investors for  
certain
services  they provide to the beneficial  owners of such shares. See 
"Management
of the Fund--Service Organizations."
    
   
    AN INVESTMENT IN  THE FUND  IS NEITHER INSURED  NOR GUARANTEED  BY THE  
U.S.
GOVERNMENT. THERE CAN BE NO ASSURANCE THAT THE FUND WILL BE ABLE TO MAINTAIN 
ITS
NET ASSET VALUE OF $1.00 PER SHARE.
    
   
    LEHMAN  BROTHERS, INC.  ("Lehman Brothers")  sponsors the  Fund and  acts 
as
Distributor of its shares. LEHMAN  BROTHERS GLOBAL ASSET MANAGEMENT INC.  
serves
as the Fund's Investment Adviser.
    
   
    The  address of the Fund is One Exchange Place, Boston, Massachusetts 
02109.
The Fund can be  contacted as follows: for  purchase and redemption orders  
only
call  1-800-851-3134; for yield information  call 1-800-238-2560 (Class A 
shares
code: 007;  Class B  shares code:  107; Class  C shares  code: 207);  for  
other
information call 1-800-368-5556.
    
   
    This  Prospectus briefly sets forth certain  information about the Fund 
that
investors should  know before  investing.  Investors are  advised to  read  
this
Prospectus  and retain it for future reference. Additional information about 
the
Fund, contained in a Statement of Additional Information dated May __, 1994,  
as
amended  or supplemented from time  to time, has been  filed with the 
Securities
and Exchange Commission and is available to investors without charge by  
calling
the   Fund's  Distributor   at  1-800-368-5556.  The   Statement  of  
Additional
Information is incorporated in its entirety by reference into this Prospectus.
    
 
   
    SHARES OF THE  FUND ARE  NOT DEPOSITS OR  OBLIGATIONS OF,  OR GUARANTEED  
OR
ENDORSED  BY, ANY BANK, AND SUCH SHARES ARE NOT FEDERALLY INSURED BY THE 
FEDERAL
DEPOSIT  INSURANCE  CORPORATION,  THE  FEDERAL   RESERVE  BOARD  OR  ANY   
OTHER
GOVERNMENTAL  AGENCY.  SHARES  OF  THE FUND  INVOLVE  CERTAIN  INVESTMENT 
RISKS,
INCLUDING THE POSSIBLE LOSS OF PRINCIPAL.
    
                           --------------------------
 
THESE SECURITIES HAVE  NOT BEEN APPROVED  OR DISAPPROVED BY  THE SECURITIES  
AND
  EXCHANGE   COMMISSION  OR  ANY  STATE  SECURITIES  COMMISSION  NOR  HAS  THE
     SECURITIES AND EXCHANGE COMMISSION OR ANY STATE SECURITIES  COMMISSION
       PASSED  UPON  THE ACCURACY  OR  ADEQUACY OF  THIS  PROSPECTUS. ANY
             REPRESENTATION TO THE CONTRARY IS A CRIMINAL OFFENSE.
                           --------------------------
 
                                LEHMAN BROTHERS
 
   
May __, 1994
    
<PAGE>
                       BACKGROUND AND EXPENSE INFORMATION
 
   
    The  following Expense Summary lists the costs and expenses that an 
investor
in the Fund can  expect to incur  during the Fund's  current fiscal year  
ending
January  31, 1995. The Fund  offers three separate classes  of shares. Shares 
of
each class represent  equal, pro  rata interests in  the Fund  and accrue  
daily
dividends  in the same  manner except that the  Class B and  Class C shares 
bear
fees payable by the Fund (at the rate of .25% and .35% per annum,  
respectively)
to  institutions  for services  they provide  to the  beneficial owners  of 
such
shares. See "Management of the Fund--Service Organizations."
    
 
EXPENSE SUMMARY
 
   
<TABLE>
<CAPTION>
                                        CLASS A CLASS B CLASS C
                                        SHARES  SHARES  SHARES
                                        ------- ------- -------
<S>                                     <C>     <C>     <C>
ANNUAL FUND OPERATING EXPENSES
 (as a percentage of average net assets)
    Advisory Fees.......................  0.09%*  0.09%*  0.09%*
    Rule 12b-1 fees.....................  none    .25%    .35%
    Other Expenses-including
     Administration Fees
     (net of applicable fee waivers)....  0.06%*  0.06%*  0.06%*
                                        ------- ------- -------
    Total Fund Operating Expenses (after
     fee waivers).......................   .16%   .41%    .51%
                                        ------- ------- -------
                                        ------- ------- -------
</TABLE>
    
 
---------
   
*_ The Expense Summary above has been restated to reflect the Fund's  
Investment
   Adviser's  and Administrator's voluntary reimbursement arrangements in 
effect
   for the Fund's fiscal year ending January 31, 1995. With respect to Class  
A,
   Class  B,  Class C  shares for  the month  of January,  1995, the  Total 
Fund
   Operating Expenses included reimbursement of  expenses are anticipated to  
be
   .18%, .43% and .53%, respectively.
    
 
   
    In  order to  maintain a competitive  expense ratio during  1994, the 
Fund's
Investment Adviser and  Administrator have voluntarily  agreed to reimburse  
the
Fund  if and  to the  extent that  total operating  expenses (other  than 
taxes,
interest, brokerage  fees and  commissions, Rule  12b-1 fees  and  
extraordinary
expenses) exceed .16% of average daily net assets through December 31, 1994. 
For
the years 1995-1997, the Investment Adviser and Administrator intend to 
continue
voluntarily  to  reimburse  the Fund  to  the  extent necessary  to  maintain 
an
annualized expense ratio at a  level no greater than  .18% of average daily  
net
assets.  The voluntary  reimbursement arrangements  described above  will not 
be
changed unless shareholders are provided at  least 60 days' advance notice.  
The
maximum   annual  contractual  fees  payable   to  the  Investment  Adviser  
and
Administrator total .20% of  average daily net  assets. Absent reimbursement  
of
expenses,  the Total  Fund Operating Expenses  of Class  A, Class B  and Class 
C
would be .25%,  .50% and  .60%, respectively, of  the Fund's  average daily  
net
assets.
    
---------
   
EXAMPLE:  An investor would  pay the following expenses  on a $1,000 
investment,
assuming (1) a  5% annual  return and  (2) redemption at  the end  of each  
time
period with respect to the following shares:
    
 
   
<TABLE>
<CAPTION>
                    1 YEAR  3 YEARS  5 YEARS  10 YEARS
                    ------- -------- -------- --------
<S>                 <C>     <C>      <C>      <C>
Class A shares:.....    $2     $ 5      $ 9      $20
Class B shares:.....    $4     $13      $23      $52
Class C shares:.....    $5     $16      $29      $64
</TABLE>
    
 
                                       2
<PAGE>
   
THE  FOREGOING SHOULD NOT BE CONSIDERED  A REPRESENTATION OF ACTUAL EXPENSES 
AND
RATES OF RETURN, WHICH MAY BE GREATER OR LESSER THAN THOSE SHOWN.
    
 
    The purpose of the foregoing table is to assist an investor in 
understanding
the various costs and expenses that an  investor in the Fund will bear  
directly
or  indirectly. Certain Service Organizations (as defined below) also may 
charge
their clients fees in connection with investments in Fund shares, which fees 
are
not reflected in the table. For more complete descriptions of the various  
costs
and  expenses, see "Management of the Fund" in this Prospectus and the 
Statement
of Additional Information.
 
   
                              FINANCIAL HIGHLIGHTS
    
 
   
    The following financial  highlights for  the fiscal year  ended January  
31,
1994  is derived from the Fund's Financial  Statements audited by Ernst & 
Young,
independent accountants. This information should be read in conjunction with 
the
financial  statements  and  notes  thereto  that  appear  in  the  Statement  
of
Additional Information.
    
 
   
                  100% TREASURY INSTRUMENTS MONEY MARKET FUND
    
 
   
<TABLE>
<CAPTION>
                                             PERIOD ENDED  PERIOD ENDED
                                               1/31/94*      1/31/94*
                                                CLASS A       CLASS B
                                             ------------- -------------
<S>                                          <C>           <C>           <C>           
<C>
Net asset value, beginning of period.........       $1.00        $1.00
Net investment income(1).....................      0.0292       0.0149
Dividends from net investment income.........     (0.0292)     (0.0149)
Net asset value, end of period...............       $1.00        $1.00
Total return(2)..............................        2.95%        1.55%
Ratios to average net assets/supplemental
 data:
Net assets, end of period (in 000's).........    $127,463      $48,000              
(3)    $    598
Ratio of net investment income to average net
 assets(5)...................................        3.03%        2.97%         
2.78%         2.65%
Ratio of operating expenses to average net
 assets(5)(6)................................        0.05%        0.00%         
0.30%         0.32%
<FN>
---------
*     The 100% Treasury Instruments Money Market Fund Class A and Class B 
Shares
      commenced operations on February 8, 1993 and May 2, 1993, respectively.
(1)   Net  investment income  before waiver of  fees by  the Investment 
Adviser,
      Administrator, Custodian and  Transfer Agent, and  expenses reimbursed  
by
      the  Investment Adviser  and Administrator  for Class  A and  Class B 
were
      $0.0248 and $0.0124, respectively.
(2)   Total return represents aggregate total return for the period indicated.
(3)   Total net assets for Class B was $100 at January 31, 1994.
</TABLE>
    
 
                                       3
<PAGE>
   
<TABLE>
<S>   <C>
(4)   Annualized expense ratio before waiver of fees by the Investment  
Adviser,
      Administrator, Custodian and Transfer Agent and expenses reimbursed by 
the
      Investment  Adviser and Administrator  for Class A and  Class B were 
0.51%
      and 0.76%, respectively.
(5)   Annualized.
</TABLE>
    
 
                       INVESTMENT OBJECTIVE AND POLICIES
 
IN GENERAL
 
   
    The Fund's investment objective is to provide current income with  
liquidity
and  security of principal. The Fund, which operates as a diversified 
investment
company, invests solely  in direct  obligations of  the U.S.  Treasury, such  
as
Treasury bills and notes. The Fund does not enter into repurchase agreements 
nor
does  the Fund purchase obligations of agencies or instrumentalities of the 
U.S.
government. Because  the  Fund  invests  exclusively  in  direct  U.S.  
Treasury
obligations, investors may benefit from income tax exclusions or exemptions 
that
are  available in certain  states and localities. See  "Taxes." As a 
fundamental
policy, the Fund will  invest only in those  instruments which will permit  
Fund
shares to qualify as "short-term liquid assets" for federally regulated 
thrifts.
    
 
   
    PRICE  AND PORTFOLIO MATURITY.  The Fund invests only in securities that 
are
purchased with  and  payable in  U.S.  dollars (I.E.,  U.S.  dollar  
denominated
securities) and that have (or, pursuant to regulations adopted by the 
Securities
and  Exchange Commission, are deemed to  have) remaining maturities of 12 
months
or  less  at  the  date  of  purchase   by  the  Fund.  The  Fund  maintains   
a
dollar-weighted average portfolio maturity of 90 days or less.
    
 
   
    Securities  issued or  guaranteed by  the U.S.  government have 
historically
involved little risk of loss of principal  if held to maturity. However, due  
to
fluctuations  in interest  rates, the market  value of such  securities may 
vary
during the period a shareholder owns shares of the Fund. The Fund may from  
time
to  time engage in portfolio trading for liquidity purposes, in order to 
enhance
its yield  or if  otherwise deemed  advisable. In  selling portfolio  
securities
prior  to maturity, the Fund may realize a  price higher or lower than that 
paid
to acquire  any  given security,  depending  upon whether  interest  rates  
have
decreased or increased since its acquisition.
    
 
   
    The  Fund  may purchase  securities  on a  "when-issued"  basis. When-
issued
securities are securities  purchased for delivery  beyond the normal  
settlement
date  at a  stated price  and yield. The  Fund will  generally not  pay for 
such
securities or start earning interest on them until they are received. 
Securities
purchased on a when-issued  basis are recorded  as an asset  and are subject  
to
changes  in value based upon changes in the general level of interest rates. 
The
Fund expects that commitments to purchase when-issued securities will not 
exceed
25% of the value of its total assets absent unusual market conditions. The  
Fund
does  not intend to purchase when-issued securities for speculative purposes 
but
only in furtherance of its investment objective.
    
 
   
    There can  be  no  assurance  that the  Fund  will  achieve  its  
investment
objective.
    
 
SUITABILITY
 
    The  Fund's investment policies are intended  to qualify Fund shares for 
the
investment of funds of federally regulated thrifts. The Fund intends to  
qualify
its  shares  as  "short-term  liquid assets"  as  established  in  the 
published
rulings, interpretations and regulations  of the Federal  Home Loan Bank  
Board.
However,  investing institutions are advised  to consult their primary 
regulator
for concurrence  that  Fund  shares qualify  under  applicable  regulations  
and
policies.
 
                                       4
<PAGE>
INVESTMENT LIMITATIONS
 
   
    The  Fund's investment  objective and the  policies described  above are 
not
fundamental and may be changed by the  Trust's Board of Trustees without a  
vote
of  shareholders. If  there is a  change in the  investment objective, 
investors
should consider whether the Fund remains  an appropriate investment in light  
of
their   then  current  financial  position  and  needs.  The  Fund's  
investment
limitations summarized below may not be changed without the affirmative vote  
of
the  holders of a  majority of its  outstanding shares. (A  complete list of 
the
investment limitations that cannot be changed without a vote of shareholders  
is
contained in the Statement of Additional Information under "Investment 
Objective
and Policies.")
    
 
The Fund may not:
 
        1.  Borrow money except from banks for temporary purposes and then in 
an
    amount  not  exceeding 10%  of  the value  of  the Fund's  total  assets, 
or
    mortgage, pledge or  hypothecate its  assets except in  connection with  
any
    such  borrowing and  in amounts not  in excess  of the lesser  of the 
dollar
    amounts borrowed or 10% of the value of the Fund's total assets at the  
time
    of  such borrowing. Additional investments will  not be made when 
borrowings
    exceed 5% of the Fund's assets.
 
        2.   Make  loans  except  that  the  Fund  may  purchase  or  hold  
debt
    obligations in accordance with its investment objective and policies.
 
                       PURCHASE AND REDEMPTION OF SHARES
 
PURCHASE PROCEDURES
 
   
    Shares  of the Fund  are sold at the  net asset value per  share of the 
Fund
next determined  after receipt  of  a purchase  order  by Lehman  Brothers,  
the
Distributor of the Fund's shares. Purchase orders for shares are accepted by 
the
Fund  only on days on which both Lehman Brothers and the Federal Reserve Bank 
of
Boston are open  for business  and must be  transmitted to  Lehman Brothers,  
by
telephone  at 1-800-851-3134. Orders  received prior to  noon, Eastern time, 
for
which payment  has  been received  by  Boston  Safe Deposit  and  Trust  
Company
("Boston Safe"), the Fund's Custodian, will be executed at noon. Orders 
received
between noon and 1:00 P.M., Eastern time, will be executed at 1:00 P.M., 
Eastern
time,  if payment has been  received by Boston Safe  by 1:00 P.M., Eastern 
time,
and will be executed  at 4:00 P.M.,  if payment has been  received by 4:00  
P.M.
Orders  received after  1:00 P.M.,  and orders  for which  payment has  not 
been
received by 4:00  P.M., Eastern time,  will not be  accepted and notice  
thereof
will  be given to the institution placing the order. Payment for Fund shares 
may
be made only in federal funds immediately available to Boston Safe. (Payment 
for
orders which are not  received or accepted by  Lehman Brothers will be  
returned
after prompt inquiry to the sending institution.) The Fund may in its 
discretion
reject any order for shares.
    
 
   
    The minimum aggregate initial investment by an institution in the 
investment
portfolios  that comprise the  Trust is $1  million (with not  less than 
$25,000
invested in  any  one  investment  portfolio offered  by  the  Trust);  
however,
broker-dealers  and other institutional  investors may set  a higher minimum 
for
their customers. To reach the  minimum Trust-wide initial investment,  
purchases
of  shares may be  aggregated over a period  of six months.  There is no 
minimum
subsequent investment.
    
 
   
    Conflict of interest restrictions may  apply to an institution's receipt  
of
compensation paid by the Fund on fiduciary funds that are invested in Class B 
or
Class    C    shares.    See    also    "Management    of    the   Fund--
Service
    
 
                                       5
<PAGE>
Organizations." Institutions, including  banks regulated by  the Comptroller  
of
the  Currency and  investment advisers and  other money managers  subject to 
the
jurisdiction of the Securities and Exchange Commission, the Department of  
Labor
or  state  securities commissions,  should consult  their legal  advisors 
before
investing fiduciary funds in Class B or Class C shares.
 
   
    SUBACCOUNTING SERVICES. Institutions  are encouraged to  open single  
master
accounts.  However, certain  institutions may wish  to use  the Transfer 
Agent's
subaccounting system to minimize their internal recordkeeping requirements.  
The
Transfer  Agent  charges a  fee  based on  the  level of  subaccounting 
services
rendered. Institutions holding Fund shares in a fiduciary, agency, custodial  
or
similar  capacity may charge or pass through subaccounting fees as part of or 
in
addition to normal trust or agency account  fees. They may also charge fees  
for
other  services provided which may  be related to the  ownership of Fund 
shares.
This Prospectus should, therefore, be  read together with any agreement  
between
the  customer and the institution with regard to the services provided, the 
fees
charged for those services and any restrictions and limitations imposed.
    
 
REDEMPTION PROCEDURES
 
   
    Redemption orders  must  be  transmitted to  Lehman  Brothers  by  
telephone
1-800-851-3134.  Payment for  redeemed shares  for which  a redemption  order 
is
received by Lehman Brothers before 1:00 P.M.,  Eastern time, on a day that  
both
Lehman  Brothers and the Federal Reserve Bank of Boston are open for business 
is
normally made in federal  funds wired to the  redeeming shareholder on the  
same
business  day. Payment for other redemption orders which are received after 
1:00
P.M., Eastern time, is normally wired in federal funds on the next business  
day
following redemption.
    
 
   
    Shares  are redeemed at the net asset  value per share next determined 
after
Lehman Brothers' receipt of the redemption order. While the Fund intends to  
use
its  best  efforts to  maintain  its net  asset value  per  share at  $1.00, 
the
proceeds paid to an investor upon redemption may be more or less than the 
amount
invested depending upon a share's net asset value at the time of redemption.  
To
allow  the Fund's Investment  Adviser to manage  the Fund effectively, 
investors
are strongly urged to initiate all investments or redemptions of Fund shares  
as
early  in the day as possible and to  notify Lehman Brothers at least one day 
in
advance of transactions in excess of $5 million.
    
 
   
    The Fund reserves the  right to wire redemption  proceeds within seven  
days
after  receiving  the redemption  order if,  in the  judgment of  the 
Investment
Adviser, an earlier payment could adversely affect the Fund. The Fund shall 
have
the right to redeem involuntarily shares in any account at their net asset 
value
if the value of the  account is less than $10,000  after 60 days' prior  
written
notice  to the investor. Any such redemption  shall be effected at the net 
asset
value per share next determined after the redemption order is entered. If 
during
the 60-day period the investor increases the value of its account to $10,000  
or
more,  no such  redemption shall  take place. In  addition, the  Fund may 
redeem
shares involuntarily or suspend the right  of redemption as permitted under  
the
Investment  Company Act of 1940,  as amended (the "1940  Act"), or under 
certain
special circumstances described in the Statement of Additional Information 
under
"Additional Purchase and Redemption Information."
    
 
   
VALUATION OF SHARES--NET ASSET VALUE
    
   
    The Fund's net asset  value per share for  purposes of pricing purchase  
and
redemption  orders is  determined by the  Fund's Administrator as  of noon, 
1:00
P.M. and 4:00 P.M., Eastern time, on  each weekday, with the exception of  
those
holidays  on which either Lehman Brothers or  the Federal Reserve Bank of 
Boston
is closed.
    
 
                                       6
<PAGE>
   
Currently, one  or  both of  these  institutions  are closed  on  the  
customary
national business holidays of New Year's Day, Martin Luther King, Jr.'s 
Birthday
(observed),  Presidents' Day (Washington's Birthday), Good Friday, Memorial 
Day,
Independence Day, Labor Day, Columbus Day (observed), Veterans Day, 
Thanksgiving
Day and Christmas Day, and on the preceding Friday or subsequent Monday when 
one
of these holidays  falls on a  Saturday or Sunday,  respectively. The net  
asset
value  per share of the Fund is calculated by adding the value of all 
securities
and other assets belonging to the Fund, subtracting liabilities and dividing 
the
result by the total  number of the Fund's  outstanding shares. In computing  
net
asset  value, the Fund uses the amortized  cost method of valuation as 
described
in the  Statement  of  Additional Information  under  "Additional  Purchase  
and
Redemption  Information." The Fund's  net asset value per  share for purposes 
of
pricing purchase and redemption  orders is determined  independently of the  
net
asset values of the shares of the Trust's other investment portfolios.
    
 
   
OTHER MATTERS
    
    Fund  shares are sold and redeemed without charge by the Fund. 
Institutional
investors purchasing  or holding  Fund shares  for their  customer accounts  
may
charge  customers  fees  for  cash management  and  other  services  provided 
in
connection with their accounts. A customer should, therefore, consider the 
terms
of its account with an institution before purchasing Fund shares. An 
institution
purchasing or redeeming  shares on behalf  of its customers  is responsible  
for
transmitting   orders  to  Lehman  Brothers  in  accordance  with  its  
customer
agreements.
 
   
                                   DIVIDENDS
    
 
   
   ** 1  Investors of  the  Fund are  entitled  to dividends  and  
distributions
arising only from the net investment income and capital gains, if any, earned 
on
its  investments.  The  Fund's net  investment  income  is declared  daily  as 
a
dividend to its shareholders of  record at the close of  business on the day  
of
declaration.  Shares begin accruing dividends on  the day the purchase order 
for
the shares is executed and continue to accrue dividends through, and  
including,
the  day before the redemption  order for the shares  is executed. Dividends 
are
paid monthly by wire  transfer within five  business days after  the end of  
the
month  or within five business  days after a redemption  of all of an 
investor's
shares of a particular class. The Fund does not expect to realize net  long-
term
capital gains.
    
 
   
   **  2 Dividends are  determined in the same  manner and are  paid in the 
same
amount for each share of the Fund irrespective of class, except that Class B 
and
Class C shares bear all the expense of fees paid to Service Organizations. As  
a
result,  at any given  time, the net  yield on Class  A shares will  be .25% 
and
.35%, respectively, lower than the net yield on Class A shares.
    
 
   
    Institutional investors  may elect  to have  their dividends  reinvested  
in
additional  full and fractional shares of the  same class at the net asset 
value
of such shares on  the payment date. Reinvested  dividends receive the same  
tax
treatment  as dividends paid in cash.  Such election, or any revocation 
thereof,
must be made in writing to the  Fund's Distributor at 260 Franklin Street,  
15th
Floor,  Boston, Massachusetts  02110-9624, and  will become  effective after 
its
receipt by the Distributor with respect to dividends paid.
    
 
                                       7
<PAGE>
   
    TSSG,  as  Transfer  Agent,  will  send  each  investor  or  its  
authorized
representative,  if  any,  an annual  statement  designating the  amount  of 
any
dividends and  capital  gains distributions  made  during each  year  and  
their
federal tax qualification.
    
 
   
                                     TAXES
    
 
   
    The Fund qualified in its last taxable year and intends to qualify in 
future
years  as a  "regulated investment company"  under the Internal  Revenue Code 
of
1986, as amended  (the "Code"). A  regulated investment company  is exempt  
from
federal income tax on amounts distributed to its investors.
    
 
   
    Qualification as a regulated investment company under the Code for a 
taxable
year  requires, among other things, that the Fund distribute to its investors 
at
least 90% of its  investment company taxable income  for such year. In  
general,
the  Fund's  investment  company  taxable  income  will  be  its  taxable 
income
(including interest) subject to certain adjustments and excluding the excess  
of
any  net long-term  capital gain  for the taxable  year over  the net short-
term
capital  loss,  if  any,  for  such   year.  The  Fund  intends  to   
distribute
substantially  all  of its  investment company  taxable  income each  year. 
Such
distributions will be taxable as ordinary income to the Fund's investors who 
are
not currently exempt from federal income taxes, whether such income is  
received
in  cash or reinvested in additional shares.  It is anticipated that none of 
the
Fund's distributions will be eligible  for the dividends received deduction  
for
corporations.  The Fund does  not expect to realize  long-term capital gains 
and
therefore does  not  expect  to  distribute  any  "capital  gain  dividends"  
as
described in the Code.
    
 
   
   **  3 Dividends declared in October, November or December of any year 
payable
to investors of record on a specified date in such months will be deemed to 
have
been received by the Investors and paid by the Fund on December 31 of such  
year
in  the event such dividends  are actually paid during  January of the 
following
year.
    
 
   
   ** 4  To  the extent  permissible  by federal  and  state law,  the  Fund  
is
structured  to provide shareholders with income  that is exempt or excluded 
from
taxation at  the state  and local  level. Substantially  all dividends  paid  
to
investors  residing  in certain  states will  be exempt  or excluded  from 
state
income tax. Many states, by statute, judicial decision or administrative 
action,
have taken the position that dividends of a regulated investment company such 
as
the Fund that are attributable to  interest on direct U.S. Treasury  
obligations
are  the  functional  equivalent  of interest  from  such  obligations  and 
are,
therefore, exempt from state and local  income taxes. Investors should be  
aware
of the application of their state and local tax laws to investments in the 
Fund.
    
 
   
   **  5 The foregoing is only a brief  summary of some of the important 
federal
tax considerations generally affecting the Fund and its investors. No attempt 
is
made to present a detailed explanation of the federal, state or local income 
tax
treatment of the Fund or its investors and this discussion is not intended as  
a
substitute  for careful  tax planning.  Accordingly, potential  investors in 
the
Fund should consult their tax advisors with specific reference to their own  
tax
situation.
    
 
                             MANAGEMENT OF THE FUND
 
   
    The  business and affairs of the Fund are managed under the direction of 
the
Trust's Board  of  Trustees. The  Trustees  approve all  significant  
agreements
between  the Trust  and the  persons or companies  that furnish  services to 
the
Fund,  including   agreements   with  its   Distributor,   Investment   
Adviser,
Administrator, Custodian
    
 
                                       8
<PAGE>
   
and  Transfer Agent. The day-to-day operations of  the Fund are delegated to 
the
Fund's  Investment  Adviser  and  Administrator.  The  Statement  of  
Additional
Information  relating  to  the  Fund  contains  general  background  
information
regarding each Trustee and executive officer of the Trust.
    
 
   
DISTRIBUTOR
    
   
    Lehman Brothers, located  at 3 World  Financial Center, New  York, New  
York
10285,  is the Distributor of the Fund's shares. Lehman Brothers, a leading 
full
service investment  firm,  meets the  diverse  financial needs  of  
individuals,
institutions  and governments around the world. Lehman Brothers has entered 
into
a  Distribution  Agreement  with  the  Trust  pursuant  to  which  it  has   
the
responsibility for distributing shares of the Fund.
    
 
INVESTMENT ADVISER--LEHMAN BROTHERS GLOBAL ASSET MANAGEMENT INC.
 
   
    Lehman  Brothers Global Asset Management Inc.  ("LBGAM"), located at 3 
World
Financial Center, New  York, New  York 10285,  serves as  the Fund's  
Investment
Adviser.  LBGAM is  a wholly owned  subsidiary of Lehman  Brothers Holdings 
Inc.
("Holdings"). LBGAM,  together with  other  Lehman Brother  investment  
advisory
affiliates,  serves as  Investment Adviser  to investment  companies and 
private
accounts in excess of [$15] billion as of _________ _, 1994.
    
 
   
    As  Investment  Adviser  to  the  Fund,  LBGAM  will  among  other   
things,
participate  in  the  formulation  of the  Fund's  investment  policies, 
analyze
economic trends  affecting  the  Fund,  and  monitor  and  evaluate  the  
Fund's
investment objective and policies and the Fund's investment performance. For 
its
services  LBGAM is entitled to receive a monthly fee from the Fund at the 
annual
rate of .10% of the value of the Fund's average daily net assets. For the 
period
February 8,  1993  (commencement  of  operations) to  January  31,  1994,  
LBGAM
received an advisory fee from the Fund in the amount of ._%.
    
 
   
ADMINISTRATOR AND TRANSFER AGENT--THE SHAREHOLDER SERVICES GROUP, INC.
    
   
    The  Shareholder  Services Group,  Inc.  ("TSSG"), located  at  One 
Exchange
Place, 53  State  Street, Boston,  Massachusetts  02109, serves  as  the  
Fund's
Administrator  and Transfer  Agent. TSSG is  a wholly owned  subsidiary of 
First
Data Corporation. As Administrator, TSSG calculates  the net asset value of  
the
Fund's  shares and generally assists in all aspects of the Fund's 
administration
and operation. As  compensation for  TSSG's services as  Administrator, TSSG  
is
entitled  to receive from the Fund  a monthly fee at the  annual rate of .10% 
of
the value of  the Fund's  average daily  net assets.  TSSG is  also entitled  
to
receive a fee from the Fund for its services as Transfer Agent. TSSG pays 
Boston
Safe,  the Fund's  Custodian, a  portion of  its monthly  administration fee 
for
custody services rendered to the Fund.
    
 
   
CUSTODIAN--BOSTON SAFE DEPOSIT AND TRUST COMPANY
    
   
    Boston Safe, a wholly owned subsidiary of The Boston Company, Inc.,  
located
at  One  Boston  Place,  Boston,  Massachusetts  02108,  serves  as  the  
Fund's
Custodian.
    
 
SERVICE ORGANIZATIONS
 
   
    Financial institutions, such  as banks,  savings and  loan associations  
and
other  financial  institutions  ("Service  Organizations")  and/or 
institutional
customers of Service  Organizations, may  purchase Class  B or  Class C  
shares.
These  shares are identical in  all respects to Class  A shares except that 
they
bear the  fees described  below and  enjoy certain  exclusive voting  rights  
on
matters  relating to these fees. The Fund will enter into an agreement with 
each
Service Organization whose customers ("Customers") are the beneficial owners  
of
Class  B or  Class C  shares that requires  the Service  Organization to 
provide
certain services in consideration of the Fund's payment
    
 
                                       9
<PAGE>
   
of service fees at the annual rate of .25% or .35%. respectively, of the 
average
daily net asset value of the  respective Class beneficially owned by  
Customers.
Such  services, which  are described more  fully in the  Statement of 
Additional
Information under "Management of the Funds--Service Organizations," may  
include
aggregating  and processing purchase and  redemption requests from Customers 
and
placing net  purchase and  redemption orders  with Lehman  Brothers;  
processing
dividend  payments from the  Fund on behalf  of Customers; providing 
information
periodically to Customers showing their positions in shares; arranging for  
bank
wires; responding to Customer inquiries relating to the services provided by 
the
Service  Organization  and  handling correspondence;  acting  as  shareholder 
of
record and nominee; and providing  reasonable assistance in connection with  
the
distribution  of shares to Customers. Services  provided with respect to Class 
B
shares will generally be more limited than those provided with respect to  
Class
C  shares. Under the terms of the agreements, Service Organizations are 
required
to provide to their Customers a schedule of any fees that they may charge to 
the
Customers relating to  the investment  of the Customers'  assets in  Class B  
or
Class  C shares. Class A shares are sold to financial institutions that have 
not
entered into  servicing  agreements  with  the Fund  in  connection  with  
their
investments. A salesperson and any other person entitled to receive 
compensation
for  selling or servicing shares of  the Fund may receive different 
compensation
for selling or servicing one Class of Shares over another Class.
    
 
EXPENSES
 
   
    The Fund bears all of its  own expenses. The Fund's expenses include  
taxes,
interest,  fees and salaries  of the Trust's  trustees and officers  who are 
not
directors, officers or employees of  the Fund's service contractors,  
Securities
and  Exchange  Commission fees,  state securities  qualification fees,  costs 
of
preparing and printing prospectuses for regulatory purposes and for 
distribution
to investors,  advisory  and  administration fees,  charges  of  the  
custodian,
transfer agent and dividend disbursing agent, Service Organization fees, 
certain
insurance  premiums, outside auditing  and legal expenses,  costs of 
shareholder
reports and shareholder meetings and  any extraordinary expenses. The Fund  
also
pays for brokerage fees and commissions (if any) in connection with the 
purchase
and  sale of  portfolio securities. In  order to maintain  a competitive 
expense
ratio during 1994, LBGAM and TSSG have agreed voluntarily to reimburse the  
Fund
if and to the extent that the Fund's total operating expenses (other than 
taxes,
interest, brokerage fees and commissions, Rule 12b-1 fees under the 1940 Act 
and
extraordinary expenses) exceed .16% of average daily net assets through 
December
31,   1994.  The  Investment  Adviser   and  Administrator  intend  to  
continue
voluntarily to  reimburse  the Fund  to  the  extent necessary  to  maintain  
an
annualized  expense ratio at a  level no greater than  .18% of average daily 
net
assets thereafter.  This  voluntary reimbursement  will  not be  changed  
unless
investors  are provided  at least  60 days'  advance notice.  In addition, 
these
service providers have agreed  to reimburse the Fund  to the extent required  
by
applicable state law for certain expenses that are described in the Statement 
of
Additional  Information  relating  to  the Fund.  Any  fees  charged  by 
Service
Organizations or other institutional investors to their customers in  
connection
with investments in Fund shares are not reflected in the Fund's expenses.
    
 
   
                                     YIELDS
    
 
   
   **  6 From time to time  the "yields", "effective yields" and "tax-
equivalent
yields" of  its  Class  A,  Class  B  and  Class  C  shares  may  be  quoted  
in
advertisements  or  in  reports  to  investors.  Yield  quotations  are 
computed
separately for each Class of shares. The "yield" quoted in advertisements for  
a
particular  class or sub-class  of shares refers  to the income  generated by 
an
investment  in  the  shares  of  such  class  over  a  specified  period   
(such
    
 
                                       10
<PAGE>
   
as  a seven-day  period) identified  in the  advertisement. This  income is 
then
"annualized." That is, the amount of  income generated by the investment  
during
that  week is  assumed to be  generated each week  over a 52-week  period and 
is
shown as a  percentage of the  investment. The "effective  yield" is  
calculated
similarly  but,  when  annualized,  the  income earned  by  an  investment  in 
a
particular class or sub-class is assumed to be reinvested. The "effective 
yield"
will be slightly higher  than the "yield" because  of the compounding effect  
of
this  assumed reinvestment. The "tax-equivalent yield" demonstrates the level 
of
taxable yield necessary to produce an  after-tax yield equivalent to the  
Fund's
tax-free  yield  for each  class or  sub-class  of shares.  It is  calculated 
by
increasing the yield (calculated  as above) by the  amount necessary to  
reflect
the  payment of federal taxes at a  stated rate. The "tax-equivalent yield" 
will
always be higher than the "yield". Yield quotations are computed separately  
for
each class or sub-class of shares.
    
 
   
   **  7 The Fund's yields  may be compared to those  of other mutual funds 
with
similar objectives, to stock or other relevant indices, or to rankings  
prepared
by independent services or other financial or industry publications that 
monitor
the performance of mutual funds. For example, such data are reported in 
national
financial  publications such  as IBC/DONOGHUE'S  MONEY FUND  REPORT-R-, THE 
WALL
STREET JOURNAL and  THE NEW YORK  TIMES, reports prepared  by Lipper  
Analytical
Service, Inc. and publications of a local or regional nature.
    
 
   
   **  8  THE  FUND'S  YIELD  FIGURES  FOR  A  CLASS  OF  SHARES  REPRESENT 
PAST
PERFORMANCE, WILL FLUCTUATE AND  SHOULD NOT BE  CONSIDERED AS REPRESENTATIVE  
OF
FUTURE RESULTS. The yield of any investment is generally a function of 
portfolio
quality  and maturity, type of investment  and operating expenses. Since 
holders
of Class B  or Class C  shares bear the  service fees for  services provided  
by
Service Organizations, the net yield on such shares can be expected at any 
given
time  to be  lower than the  net yield  on Class A  shares. Any  fees charged 
by
Service  Organizations  or  other  institutional  investors  directly  to  
their
customers in connection with investments in Fund shares are not reflected in 
the
Fund's  expenses or yields.  The methods used  to compute the  Fund's yields 
are
described in more detail in  the Statement of Additional Information.  
Investors
may  call 1-800-238-2560 (Class  A shares code:  007; Class B  shares code: 
107;
Class C shares code: 207) to obtain current yield information.
    
 
   
    The yields for Class  A and Class  B shares for the  Fund for the  seven-
day
period ended January 31, 1994 were __% and __%, respectively.
    
 
   
                             DESCRIPTION OF SHARES
    
 
    * 1 moved from here; text not shown
 
   
    * moved from here; text not shown
    
 
    * 3 moved from here; text not shown
 
    * 4 moved from here; text not shown
 
   
    * 5 moved from here; text not shown
    
 
    The  Trust is  a Massachusetts  business trust  established on  November 
25,
1992.
 
   
    The Trust's Declaration of Trust authorizes  the Board of Trustees to  
issue
an  unlimited number of full and fractional shares of beneficial interest in 
the
Trust and  to  classify or  reclassify  any unissued  shares  into one  or  
more
additional  classes of  shares. The Trust  is an  open-end management 
investment
company, which offers twelve portfolios: Prime Money Market Fund (Class A, 
Class
B and Class C), Prime Value Money Market Fund
    
 
                                       11
<PAGE>
   
(Class A, Class  B, Class C  and Class D),  Government Obligations Money  
Market
Fund  (Class A, Class B, Class C and Class D), 100% Government Obligations 
Money
Market Fund (Class A,  Class B and Class  C), Treasury Instruments Money  
Market
Fund  II (Class A, Class B and  Class C), 100% Treasury Instruments Money 
Market
Fund (Class A, Class B and Class C), Tax-Free Money Market Fund (Class A,  
Class
B and Class C), Municipal Money Market Fund (Class A, Class B, Class C and 
Class
D),  California Municipal Money Market Fund (Class  A, Class B and Class C), 
New
York Municipal Money Market Fund (Class A,  Class B and Class C), Floating  
Rate
U.S.  Government Fund (Class A  and Class B) and  Short Duration U.S. 
Government
Fund (Class A and Class B). Shares  of the New York Municipal Money Market  
Fund
are  not  currently  sold  to  the  public.  The  Declaration  of  Trust 
further
authorizes the trustees to classify or  reclassify any class of shares into  
one
or more sub-classes.
    
 
   
    THIS  PROSPECTUS AND  THE STATEMENT  OF ADDITIONAL  INFORMATION 
INCORPORATED
HEREIN RELATE PRIMARILY TO THE FUND  AND DESCRIBE ONLY THE INVESTMENT  
OBJECTIVE
AND  POLICIES, OPERATIONS,  CONTRACTS AND  OTHER MATTERS  RELATING TO  THE 
FUND.
INVESTORS WISHING  TO OBTAIN  SIMILAR INFORMATION  REGARDING THE  TRUST'S  
OTHER
PORTFOLIOS MAY OBTAIN SEPARATE PROSPECTUSES DESCRIBING THEM BY CONTACTING 
LEHMAN
BROTHERS AT 1-800-368-5556.
    
 
    The  Trust does not presently intend to hold annual meetings of 
shareholders
except as required by the 1940 Act or other applicable law. The Trust will  
call
a meeting of shareholders for the purpose of voting upon the question of 
removal
of a member of the Board of Trustees upon written request of shareholders 
owning
at least 10% of the outstanding shares of the Trust entitled to vote.
 
    Each  Fund share  represents an equal  proportionate interest  in the 
assets
belonging to  the Fund.  Each share,  which has  a par  value of  $.001, has  
no
preemptive  or conversion rights.  When issued for payment  as described in 
this
Prospectus, shares will be fully paid and non-assessable.
 
    Holders of the Fund's shares will vote in the aggregate and not by class  
on
all  matters with the Trust,  except where otherwise required  by law and 
except
that only Class B  or Class C shares,  as the case may  be, will be entitled  
to
vote  on matters submitted  to a vote  of shareholders pertaining  to the 
Fund's
arrangements with  Service Organizations  with respect  to the  relevant  
Class.
Further,  shareholders  of  all  of  the Trust's  portfolios  will  vote  in 
the
aggregate and not by portfolio except as  otherwise required by law or when  
the
Board  of Trustees determines that the matter  to be voted upon affects only 
the
interests of the shareholders of a  particular portfolio. (See the Statement  
of
Additional  Information under  "Miscellaneous" for  examples where  the 1940 
Act
requires voting by  portfolio.) Shareholders of  the Trust are  entitled to  
one
vote  for  each  full  share  held  (irrespective  of  class  or  portfolio) 
and
fractional votes for fractional shares  held. Voting rights are not  
cumulative;
and,  accordingly, the holders of  more than 50% of  the aggregate shares of 
the
Trust may elect all of the trustees.
 
   
    For information  concerning  the  redemption of  Fund  shares  and  
possible
restrictions on their transferability, see "Purchase and Redemption of 
Shares."
    
 
    * 6 moved from here; text not shown
 
    *7 moved from here; text not shown
 
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                                       12
<PAGE>
                LEHMAN BROTHERS INSTITUTIONAL FUNDS GROUP TRUST
 
   
                            Prime Money Market Fund
                         Prime Value Money Market Fund
                    Government Obligations Money Market Fund
                 100% Government Obligations Money Market Fund
                   Treasury Instruments Money Market Fund II
                  100% Treasury Instruments Money Market Fund
                          Municipal Money Market Fund
                           Tax-Free Money Market Fund
                     California Municipal Money Market Fund
                      New York Municipal Money Market Fund
    
                            ------------------------
 
   
                       Floating Rate U.S. Government Fund
                      Short Duration U.S. Government Fund
    
                            ------------------------
 
   
NO  PERSON  HAS  BEEN  AUTHORIZED  TO  GIVE  ANY  INFORMATION  OR  TO  MAKE  
ANY
REPRESENTATIONS NOT CONTAINED IN THIS PROSPECTUS, OR IN THE FUND'S STATEMENT  
OF
ADDITIONAL  INFORMATION INCORPORATED HEREIN BY REFERENCE, IN CONNECTION WITH 
THE
OFFERING MADE BY  THIS PROSPECTUS  AND, IF GIVEN  OR MADE,  SUCH INFORMATION  
OR
REPRESENTATIONS  MUST NOT BE RELIED UPON AS  HAVING BEEN AUTHORIZED BY THE 
TRUST
OR ITS DISTRIBUTOR. THIS PROSPECTUS DOES NOT CONSTITUTE AN OFFERING BY THE 
TRUST
OR BY  THE  DISTRIBUTOR IN  ANY  JURISDICTION IN  WHICH  SUCH OFFERING  MAY  
NOT
LAWFULLY BE MADE.
    
                              -------------------
                               TABLE OF CONTENTS
 
   
<TABLE>
<CAPTION>
                                              PAGE
                                            ---------
<S>                                         <C>
Background and Expense Information........          3
Financial Highlights......................          4
Investment Objective and Policies.........          4
Purchase and Redemption of Shares.........          5
Dividends.................................          7
Taxes.....................................          8
Management of the Fund....................          8
Yields....................................         10
Description of Shares.....................         11
</TABLE>
    
 
                           100% TREASURY INSTRUMENTS
                               MONEY MARKET FUND
 
                              -------------------
 
   
                                   PROSPECTUS
                                  May __, 1994
    
 
                             ---------------------
 
                                LEHMAN BROTHERS
 
   
THIS PROSPECTUS AND THE STATEMENT OF ADDITIONAL INFORMATION INCORPORATED 
HEREIN
  RELATE PRIMARILY TO THE FUND AND DESCRIBE ONLY THE INVESTMENT OBJECTIVE AND
    POLICIES, OPERATIONS, CONTRACTS AND OTHER MATTERS RELATING TO THE FUND.
  INVESTORS WISHING TO OBTAIN SIMILAR INFORMATION REGARDING THE TRUST'S OTHER
PORTFOLIOS MAY OBTAIN SEPARATE PROSPECTUSES DESCRIBING THEM BY CONTACTING 
LEHMAN
                          BROTHERS
    


<PAGE>
PROSPECTUS
 
                 100% GOVERNMENT OBLIGATIONS MONEY MARKET FUND
 
                       An Investment Portfolio Offered By
                Lehman Brothers Institutional Funds Group Trust
 
   
    Lehman  Brothers Institutional Funds Group Trust (the "Trust") is a no-
load,
open-end, management investment company. The shares described in this 
Prospectus
represent interests  in  the  100%  Government  Obligations  Money  Market  
Fund
portfolio (the "Fund"), one of a family of money market portfolios of the 
Trust.
    
   
    To  the extent permissible by federal and  state law, the Fund is 
structured
to provide shareholders with income that is exempt or excluded from taxation  
at
the  state and local level. See "Taxes." The Fund is also designed to provide 
an
economical and convenient means for the  investment of short-term funds held  
by
banks,   trust  companies,  corporations,  employee   benefit  plans  and  
other
institutional investors.  The investment  objective of  the Fund  is to  
provide
current  income with  liquidity and security  of principal. The  Fund invests 
in
those obligations issued or guaranteed as to principal and interest by the  
U.S.
government  or by agencies or instrumentalities thereof the interest income 
from
which, under current law, generally  may not be subject  to state income tax  
by
reason of federal law.
    
 
   
    Fund  shares may not be purchased by individuals directly, but 
institutional
investors may purchase shares for  accounts maintained by individuals. The  
Fund
currently  offers  three  classes of  shares.  In  addition to  Class  A 
shares,
institutional investors may  purchase on behalf  of their customers  Class B  
or
Class C shares which accrue daily dividends in the same manner as Class A 
shares
but  bear all fees  payable by the  Fund to institutional  investors for 
certain
services they provide to the beneficial  owners of such shares. See  
"Management
of the Fund--Service Organizations."
    
   
    AN  INVESTMENT IN  THE FUND  IS NEITHER INSURED  NOR GUARANTEED  BY THE 
U.S.
GOVERNMENT. THERE CAN BE NO ASSURANCE THAT THE FUND WILL BE ABLE TO MAINTAIN 
ITS
NET ASSET VALUE OF $1.00 PER SHARE.
    
   
    LEHMAN BROTHERS,  INC. ("LEHMAN  BROTHERS") sponsors  the Fund  and acts  
as
Distributor  of its shares. LEHMAN BROTHERS  GLOBAL ASSET MANAGEMENT INC. 
serves
as the Fund's Investment Adviser.
    
 
   
    The address of the Fund is One Exchange Place, Boston, Massachusetts  
02109.
The  Fund can be contacted  as follows: for purchase  and redemption orders 
only
call 1-800-851-3134; for yield information  call 1-800-238-2560 (Class A  
shares
code:  004;  Class B  shares code:  104; Class  C shares  code: 204);  for 
other
information call 1-800-368-5556.
    
   
    This Prospectus briefly sets forth  certain information about the Fund  
that
investors  should  know before  investing. Investors  are  advised to  read 
this
Prospectus and retain it for future reference. Additional information about  
the
Fund,  contained in a Statement of Additional Information dated May __, 1994, 
as
amended or supplemented from  time to time, has  been filed with the  
Securities
and  Exchange Commission and is available to investors without charge by 
calling
the  Fund's  Distributor   at  1-800-368-5556.  The   Statement  of   
Additional
Information is incorporated in its entirety by reference into this Prospectus.
    
 
   
    SHARES  OF THE  FUND ARE  NOT DEPOSITS OR  OBLIGATIONS OF,  OR GUARANTEED 
OR
ENDORSED BY, ANY BANK, AND SUCH SHARES ARE NOT FEDERALLY INSURED BY THE  
FEDERAL
DEPOSIT INSURANCE CORPORATION, THE FEDERAL RESERVE BOARD OR ANY OTHER 
GOVERNMENT
AGENCY.  SHARES  OF THE  FUND INVOLVE  CERTAIN  INVESTMENT RISKS,  INCLUDING 
THE
POSSIBLE LOSS OF PRINCIPAL.
    
                           --------------------------
 
THESE SECURITIES HAVE  NOT BEEN APPROVED  OR DISAPPROVED BY  THE SECURITIES  
AND
  EXCHANGE   COMMISSION  OR  ANY  STATE  SECURITIES  COMMISSION  NOR  HAS  THE
    SECURITIES AND EXCHANGE  COMMISSION OR ANY  STATE SECURITIES  COMMISSION
      PASSED  UPON  THE  ACCURACY  OR  ADEQUACY  OF  THIS  PROSPECTUS. ANY
                REPRESENTATION TO THE CONTRARY IS A CRIMINAL OFFENSE.
                           --------------------------
 
                                LEHMAN BROTHERS
 
   
May __, 1994
    
<PAGE>
                       BACKGROUND AND EXPENSE INFORMATION
 
   
    The  following Expense Summary lists the costs and expenses that an 
investor
in the Fund can  expect to incur  during the Fund's  current fiscal year  
ending
January  31, 1995. The Fund  offers three separate classes  of shares. Shares 
of
each class represent  equal, pro  rata interests in  the Fund  and accrue  
daily
dividends  in the same manner  except that Class B and  Class C shares bear 
fees
payable by the Fund (at  the rate of .25% and  .35% per annum, respectively)  
to
institutions  for services they provide to the beneficial owners of such 
shares.
See "Management of the Fund--Service Organizations."
    
 
EXPENSE SUMMARY
 
   
<TABLE>
<CAPTION>
                                        CLASS A CLASS B CLASS C
                                        SHARES  SHARES  SHARES
                                        ------- ------- -------
<S>                                     <C>     <C>     <C>
ANNUAL FUND OPERATING EXPENSES
 (as a percentage of average net assets)
    Advisory Fees
     (net applicable fee waivers).......  0.00%*  0.00%*  0.00%*
    Rule 12b-1 fees.....................  none    .25%    .35%
    Other Expenses--including
     Administration Fees
     (net of applicable fee waivers)....  0.16%  0.16%*  0.16%*
                                        ------- ------- -------
    Total Fund Operating Expenses (after
     expense reimbursement)*............   .16%   .41%    .51%
                                        ------- ------- -------
                                        ------- ------- -------
<FN>
---------
* The Expense Summary above has  been restated to reflect the Fund's  
Investment
  Adviser's  and Administrator's Voluntary  reimbursement arrangements in 
effect
  for the Fund's fiscal year ending January  31, 1995. With respect to Class  
A,
  Class  B and  Class C  share for the  month of  January, 1995,  the Total 
Fund
  Operating Expenses including reimbursement of  expenses are anticipated to  
be
  .18%, .43%, and .53%, respectively.
</TABLE>
    
 
   
    In  order to  maintain a competitive  expense ratio during  1994, the 
Funds'
Investment Adviser and  Administrator have voluntarily  agreed to reimburse  
the
Fund  if and  to the  extent that  total operating  expenses (other  than 
taxes,
interest, brokerage  fees and  commissions, Rule  12b-1 fees  and  
extraordinary
expenses) exceed .16% of average daily net assets through December 31, 1994. 
For
the years 1995-1997, the Investment Adviser and Administrator intend to 
continue
voluntarily  to  reimburse  the Fund  to  the  extent necessary  to  maintain 
an
annualized expense ratio at a  level no greater than  .18% of average daily  
net
assets.  The voluntary  reimbursement arrangements  described above  will not 
be
changed unless shareholders are provided at  least 60 days' advance notice.  
The
maximum   annual  contractual  fees  payable   to  the  Investment  Adviser  
and
Administrator total .20% of  average daily net  assets. Absent reimbursement  
of
expenses,  the Total  Fund Operating Expenses  of Class  A, Class B  and Class 
C
would be .36%,  .61% and  .71%, respectively, of  the Fund's  average daily  
net
assets.
    
---------
   
EXAMPLE:  An investor would  pay the following expenses  on a $1,000 
investment,
assuming (1) a  5% annual  return and  (2) redemption at  the end  of each  
time
period with respect to the following shares:
    
 
   
<TABLE>
<CAPTION>
                    1 YEAR  3 YEARS  5 YEARS  10 YEARS
                    ------- -------- -------- --------
<S>                 <C>     <C>      <C>      <C>
Class A shares:.....    $2     $ 5      $ 9      $20
Class B shares:.....    $4     $13      $23      $52
Class C shares:.....    $5     $16      $29      $64
</TABLE>
    
 
                                       2
<PAGE>
   
THE  FOREGOING SHOULD NOT BE CONSIDERED  A REPRESENTATION OF ACTUAL EXPENSES 
AND
RATES OF RETURN, WHICH MAY BE GREATER OR LESSER THAN THOSE SHOWN.
    
 
    The purpose of the foregoing table is to assist an investor in 
understanding
the various costs and expenses that an  investor in the Fund will bear  
directly
or  indirectly. Certain Service Organizations (as defined below) also may 
charge
their clients fees in connection with investments in Fund shares, which fees 
are
not reflected in the table. For more complete descriptions of the various  
costs
and  expenses, see "Management of the Fund" in this Prospectus and the 
Statement
of Additional Information.
 
   
                              FINANCIAL HIGHLIGHTS
    
 
   
    The following financial  highlights for  the fiscal year  ended January  
31,
1994  is derived from the Fund's Financial  Statements audited by Ernst & 
Young,
independent accountants. This information should be read in conjunction with 
the
financial  statements  and  notes  thereto  that  appear  in  the  Statement  
of
Additional Information.
    
 
   
                 100% GOVERNMENT OBLIGATIONS MONEY MARKET FUND
    
 
   
<TABLE>
<CAPTION>
                                             PERIOD ENDED
                                               1/31/94*
                                                CLASS A
                                             -------------
<S>                                          <C>
Net asset value, beginning of period.........       $1.00
Net investment income(1).....................      0.0304
Distributions from dividends.................     (0.0304)
Net asset value, end of period...............       $1.00
Total return(2)..............................        3.09%
Ratios/Supplemental Data:
Net assets, end of period (in 000's).........     $41,709
Ratio of net investment income to average net
 assets(3)...................................        3.11%
Ratio of operating expenses to average net
 assets(3)(4)................................        0.06%
<FN>
---------
*     The 100% Government Obligations Money Market Fund Class A Shares 
commenced
      operations on February 8, 1993.
(1)   Net  investment income  before waiver of  fees by  the Investment 
Adviser,
      Administrator, Custodian and Transfer Agent and expenses reimbursed by 
the
      Investment Adviser and Administrator was $0.0220.
(2)   Total return represents aggregate total return for the period indicated.
(3)   Annualized.
(4)   Annualized expense ratio before waiver of fees by the Investment  
Adviser,
      Administrator, Custodian and Transfer Agent and expenses reimbursed by 
the
      Investment Adviser and Administrator was 0.92%.
</TABLE>
    
 
                                       3
<PAGE>
                       INVESTMENT OBJECTIVE AND POLICIES
 
IN GENERAL
 
   
    The  Fund's  investment  objective  is  current  income  with  liquidity 
and
security of  principal. The  Fund, which  operates as  a diversified  
investment
company,  invests  in  obligations  issued or  guaranteed  as  to  principal 
and
interest by the U.S. government or by agencies or instrumentalities thereof  
the
interest  income from which, under current law,  generally may not be subject 
to
state income tax by  reason of federal law,  including securities issued by  
the
U.S.  Treasury and by certain agencies  or instrumentalities such as the 
Federal
Home Loan Bank,  Federal Farm Credit  Banks Funding Corp.  and the Student  
Loan
Marketing  Association. Investors in  a particular state  that imposes an 
income
tax should determine through  consultation with their  own tax advisors  
whether
such  interest income, when distributed  by the Fund, will  be considered by 
the
state to have retained  exempt status, and whether  the Fund's capital gain  
and
other  income, if any,  when distributed will  be subject to  the state's 
income
tax. See "Taxes."  Due to  state income tax  considerations, the  Fund will  
not
enter into repurchase agreements.
    
 
   
    The  Fund invests only in securities that  are purchased with and payable 
in
U.S. dollars  (i.e., U.S.  dollar  denominated securities)  and that  have  
(or,
pursuant  to regulations adopted by the  Securities and Exchange Commission, 
are
deemed to  have) remaining  maturities  of 13  months or  less  at the  date  
of
purchase  by the  Fund. The Fund  maintains a  dollar-weighted average 
portfolio
maturity of 90 days or less.
    
 
   
    Securities issued or  guaranteed by  the U.S. government,  its agencies  
and
instrumentalities have historically involved little risk of loss of principal 
if
held  to maturity.  However, due to  fluctuations in interest  rates, the 
market
value of such securities may vary during the period a shareholder owns shares 
of
the Fund.  The Fund  may  from time  to time  engage  in portfolio  trading  
for
liquidity  purposes,  in  order to  enhance  its  yield or  if  otherwise 
deemed
advisable. In  selling portfolio  securities  prior to  maturity, the  Fund  
may
realize  a price higher or  lower than that paid  to acquire any given 
security,
depending upon  whether interest  rates have  decreased or  increased since  
its
acquisition.
    
 
   
    The  Fund  may purchase  securities  on a  "when-issued"  basis. When-
issued
securities are securities  purchased for delivery  beyond the normal  
settlement
date  at a  stated price  and yield. The  Fund will  generally not  pay for 
such
securities or start earning interest on them until they are received. 
Securities
purchased on a when-issued  basis are recorded  as an asset  and are subject  
to
changes  in value based upon changes in the general level of interest rates. 
The
Fund expects that commitments to purchase when-issued securities will not 
exceed
25% of the value of its total assets absent unusual market conditions. The  
Fund
does  not intend to purchase when-issued securities for speculative purposes 
but
only in furtherance of its investment objective.
    
 
   
    There can  be  no  assurance  that the  Fund  will  achieve  its  
investment
objective.
    
 
   
INVESTMENT LIMITATIONS
    
   
    The  Fund's investment  objective and  the policies  described above  may 
be
changed by the  Trust's Board  of Trustees without  a vote  of shareholders.  
If
there is a change in the investment objective, investors should consider 
whether
the  Fund  remains an  appropriate  investment in  light  of their  then 
current
financial position and needs. The Fund's investment limitations summarized 
below
may not be changed without the affirmative
    
 
                                       4
<PAGE>
vote of the holders of a majority of its outstanding shares. (A complete list 
of
the investment limitations that cannot be changed without a vote of 
shareholders
is contained  in  the  Statement of  Additional  Information  under  
"Investment
Objective and Policies.")
 
The Fund may not:
 
        1.  Borrow money except from banks for temporary purposes and then in 
an
    amount  not  exceeding 10%  of  the value  of  the Fund's  total  assets, 
or
    mortgage, pledge or  hypothecate its  assets except in  connection with  
any
    such  borrowing and  in amounts not  in excess  of the lesser  of the 
dollar
    amounts borrowed or 10% of the value of the Fund's total assets at the  
time
    of  such borrowing. Additional investments will  not be made when 
borrowings
    exceed 5% of the Fund's assets.
 
        2.   Make  loans  except  that  the  Fund  may  purchase  or  hold  
debt
    obligations in accordance with its investment objective and policies.
 
                       PURCHASE AND REDEMPTION OF SHARES
 
PURCHASE PROCEDURES
 
   
    Shares  of the Fund  are sold at the  net asset value per  share of the 
Fund
next determined  after receipt  of  a purchase  order  by Lehman  Brothers,  
the
Distributor of the Fund's shares. Purchase orders for shares are accepted by 
the
Fund  only on days on which both Lehman Brothers and the Federal Reserve Bank 
of
Boston are open  for business  and must be  transmitted to  Lehman Brothers,  
by
telephone  at 1-800-851-3134. Orders  received prior to  noon, Eastern time, 
for
which payment  has  been received  by  Boston  Safe Deposit  and  Trust  
Company
("Boston Safe"), the Fund's Custodian, will be executed at noon. Orders 
received
between noon and 1:00 P.M., Eastern time, will be executed at 1:00 P.M., 
Eastern
time,  if payment has been  received by Boston Safe  by 1:00 P.M., Eastern 
time,
and will be  executed at 4:00  P.M. if payment  has been received  by 4:00  
P.M.
Orders  received after  1:00 P.M.,  and orders  for which  payment has  not 
been
received by 4:00  P.M., Eastern time,  will not be  accepted and notice  
thereof
will  be given to the institution placing the order. Payment for Fund shares 
may
be made only in federal funds immediately available to Boston Safe. (Payment 
for
orders which are not  received or accepted by  Lehman Brothers will be  
returned
after prompt inquiry to the sending institution.) The Fund may in its 
discretion
reject any order for shares.
    
 
   
    The minimum aggregate initial investment by an institution in the 
investment
portfolios  that comprise the  Trust is $1  million (with not  less than 
$25,000
invested in  any  one  investment  portfolio offered  by  the  Trust);  
however,
broker-dealers  and other institutional  investors may set  a higher minimum 
for
their customers. To reach the minimum Trust-wide investment, purchases of 
shares
may be aggregated over a  period of six months.  There is no minimum  
subsequent
investment.
    
 
   
    Conflict  of interest restrictions may apply  to an institution's receipt 
of
compensation paid by the Fund on fiduciary funds that are invested in Class B 
or
Class C  shares.  See  also "Management  of  the  Fund--Service  
Organizations."
Institutions,  including banks regulated by the  Comptroller of the Currency 
and
investment advisers and other money managers subject to the jurisdiction of  
the
Securities  and Exchange Commission, the Department of Labor or state 
securities
commissions, should  consult their  legal  advisors before  investing  
fiduciary
funds in Class B or Class C shares.
    
 
                                       5
<PAGE>
   
    SUBACCOUNTING  SERVICES.  Institutions are  encouraged to open single 
master
accounts. However, certain  institutions may  wish to use  the Transfer  
Agent's
subaccounting  system to minimize their internal recordkeeping requirements. 
The
Transfer Agent  charges a  fee  based on  the  level of  subaccounting  
services
rendered.  Institutions holding Fund shares in a fiduciary, agency, custodial 
or
similar capacity may charge or pass through subaccounting fees as part of or  
in
addition  to normal trust or agency account  fees. They may also charge fees 
for
other services provided which  may be related to  the ownership of Fund  
shares.
This  Prospectus should, therefore, be read  together with any agreement 
between
the customer and the institution with regard to the services provided, the  
fees
charged for those services and any restrictions and limitations imposed.
    
 
REDEMPTION PROCEDURES
 
   
    Redemption  orders  must  be  transmitted to  Lehman  Brothers  by 
telephone
1-800-851-3134. Payment  for redeemed  shares for  which a  redemption order  
is
received by Lehman Brothers prior to 3:00 P.M., Eastern time, on a day that 
both
Lehman  Brothers and the Federal Reserve Bank of Boston are open for business 
is
normally made in federal  funds wired to the  redeeming shareholder on the  
same
business  day. Payment for other redemption orders which are received after 
3:00
P.M. and 4:00 P.M., Eastern time, is normally wired in federal funds on the 
next
business day following redemption.
    
 
   
    Shares are redeemed at the net  asset value per share next determined  
after
Lehman  Brothers' receipt of the redemption order. While the Fund intends to 
use
its best  efforts to  maintain  its net  asset value  per  share at  $1.00,  
the
proceeds paid to an investor upon redemption may be more or less than the 
amount
invested  depending upon a share's net asset value at the time of redemption. 
To
allow the Fund's Investment  Adviser to manage  the Fund effectively,  
investors
are  strongly urged to initiate all investments or redemptions of Fund shares 
as
early in the day as possible and to  notify Lehman Brothers at least one day  
in
advance of transactions in excess of $5 million.
    
 
   
    The  Fund reserves the  right to wire redemption  proceeds within seven 
days
after receiving  the redemption  order if,  in the  judgment of  the  
Investment
Adviser, an earlier payment could adversely affect the Fund. The Fund shall 
have
the right to redeem involuntarily shares in any account at their net asset 
value
if  the value of the  account is less than $10,000  after 60 days' prior 
written
notice to the investor. Any such redemption  shall be effected at the net  
asset
value per share next determined after the redemption order is entered. If 
during
the  60-day period the investor increases the value of its account to $10,000 
or
more, no such  redemption shall  take place. In  addition, the  Fund may  
redeem
shares  involuntarily or suspend the right  of redemption as permitted under 
the
Investment Company Act of  1940, as amended (the  "1940 Act"), or under  
certain
special circumstances described in the Statement of Additional Information 
under
"Additional Purchase and Redemption Information."
    
 
   
VALUATION OF SHARES--NET ASSET VALUE
    
   
    The  Fund's net asset value  per share for purposes  of pricing purchase 
and
redemption orders is  determined by the  Fund's Administrator as  of noon,  
3:00
P.M.  and 4:00 P.M., Eastern time, on  each weekday, with the exception of 
those
holidays on which either Lehman Brothers  or the Federal Reserve Bank of  
Boston
is  closed.  Currently, one  or both  of  these institutions  are closed  on 
the
customary national  business holidays  of New  Year's Day,  Martin Luther  
King,
Jr.'s Birthday (observed), Presidents' Day (Washington's Birthday), Good 
Friday,
Memorial   Day,  Independence  Day,  Labor  Day,  Columbus  Day,  Veterans  
Day,
Thanksgiving Day and Christmas  Day, and on the  preceding Friday or  
subsequent
Monday    when   one    of   these   holidays    falls   on    a   Saturday   
or
    
 
                                       6
<PAGE>
   
Sunday, respectively. The net asset value per share of the Fund is calculated 
by
adding the  value of  all securities  and other  assets belonging  to the  
Fund,
subtracting  liabilities  and dividing  the result  by the  total number  of 
the
Fund's outstanding  shares. In  computing net  asset value,  the Fund  uses  
the
amortized  cost method of valuation as  described in the Statement of 
Additional
Information under "Additional Purchase  and Redemption Information." The  
Fund's
net asset value per share for purposes of pricing purchase and redemption 
orders
is determined independently of the net asset values of the shares of the 
Trust's
other investment portfolios.
    
 
   
OTHER MATTERS
    
    Fund  shares are sold and redeemed without charge by the Fund. 
Institutional
investors purchasing  or holding  Fund shares  for their  customer accounts  
may
charge  customers  fees  for  cash management  and  other  services  provided 
in
connection with their accounts. A customer should, therefore, consider the 
terms
of its account with an institution before purchasing Fund shares. An 
institution
purchasing or redeeming  shares on behalf  of its customers  is responsible  
for
transmitting   orders  to  Lehman  Brothers  in  accordance  with  its  
customer
agreements.
 
   
                                   DIVIDENDS
    
 
   
    ** 1  Investors of  the Fund  are entitled  to dividends  and  
distributions
arising only from the net investment income and capital gains, if any, earned 
on
its  investments held by the Fund. The  Fund's net investment income is 
declared
daily as a dividend to shares held of record at the close of business on the 
day
of declaration. Shares begin  accruing dividends on the  day the purchase  
order
for  the shares is  effected and continue  to accrue dividends  through, the 
day
before such shares are  redeemed. Dividends are paid  monthly by wire  
transfer,
within  five business days  after the end  of the month  or within five 
business
days after a redemption of all of a shareholder's shares of a particular  
class.
The Fund does not expect to realize net long-term capital gains.
    
 
   
    **  2 Dividends are determined  in the same manner and  are paid in the 
same
amount for each share of the Fund share, except that Class B and Class C  
shares
bear  all the expense of fees paid to Service Organizations. As a result, at 
any
given time, the net yield on Class B  and Class C shares will be .25% and  
.35%,
respectively, lower than the net yield on Class A shares.
    
 
   
    Institutional  investors  may elect  to have  their dividends  reinvested 
in
additional full and fractional  shares of the same  class with respect to  
which
such dividends are declared at the net asset value of such shares on the 
payment
date.  Reinvested dividends receive the same  tax treatment as dividends paid 
in
cash. Such election, or any  revocation thereof, must be  made in writing to  
as
the Fund's Distributor at 260 Franklin Street, 15th Floor, Boston, 
Massachusetts
02110-9624  and will become effective after  its receipt by the Distributor 
with
respect to dividends paid.
    
 
   
    The Shareholder Services Group, Inc. ("TSSG"), as Transfer Agent, will  
send
each  investor or  its authorized  representative, if  any, an  annual 
statement
designating the amount, of  any dividends and  capital gains distributions  
made
during each year and their federal tax qualification.
    
 
                                       7
<PAGE>
   
                                     TAXES
    
 
   
    The Fund qualified in its last taxable year and intends to qualify in 
future
years  as a  "regulated investment company"  under the Internal  Revenue Code 
of
1986, as amended  (the "Code"). A  regulated investment company  is exempt  
from
federal income tax on amounts distributed to its investors.
    
 
   
    **  3 Qualification as a  regulated investment company under  the Code for 
a
taxable year  requires, among  other things,  that the  Fund distribute  to  
its
investors  at least 90% of its investment  company taxable income for such 
year.
In general, the  Fund's investment company  taxable income will  be its  
taxable
income  (including interest)  subject to  certain adjustments  and excluding 
the
excess of any  net long-term  capital gain  for the  taxable year  over the  
net
short-term  capital loss, if any, for such  year. The Fund intends to 
distribute
substantially all  of its  investment  company taxable  income each  year.  
Such
distributions will be taxable as ordinary income to the Fund's investors who 
are
not  currently exempt from federal income taxes, whether such income is 
received
in cash or reinvested in additional shares.  It is anticipated that none of  
the
Fund's  distributions will be eligible for  the dividends received deduction 
for
corporations. The Fund does not expect  to realize long-term capital gains  
and,
therefore,  does  not contemplate  payment of  any  "capital gain  dividends" 
as
described in the Code.
    
 
   
    ** 4 Dividends declared in October, November or December of any year 
payable
to investors of record on a specified date in such months will be deemed to 
have
been received by the investors and paid by the Fund on December 31 of such  
year
in  the event such dividends  are actually paid during  January of the 
following
year.
    
 
   
    ** 5  To the  extent  permissible by  federal and  state  law, the  Fund  
is
structured  to provide  investors with  income that  is exempt  or excluded 
from
taxation at  the state  and local  level. Substantially  all dividends  paid  
to
investors  residing  in certain  states will  be exempt  or excluded  from 
state
income tax. Many states, by statute, judicial decision or administrative 
action,
have taken the position that dividends of a regulated investment company such 
as
the Fund that are attributable to  interest on obligations of the U.S.  
Treasury
and  certain U.S. government  agencies and instrumentalities  are the 
functional
equivalent of interest  from such  obligations and are,  therefore, exempt  
from
state  and local income taxes.  Investors should be aware  of the application 
of
their state and local tax laws to investments in the Fund.
    
 
   
    ** 6  The foregoing  discussion  is only  a brief  summary  of some  of  
the
important  federal  tax  considerations  generally affecting  the  Fund  and 
its
investors. No attempt is made to present a detailed explanation of the  
federal,
state  or  local income  tax treatment  of the  Fund or  its investors  and 
this
discussion  is  not  intended  as   a  substitute  for  careful  tax   
planning.
Accordingly,  potential investors in the Fund  should consult their tax 
advisors
with specific reference to their own tax situation.
    
 
                             MANAGEMENT OF THE FUND
 
   
    The business and affairs of the Fund are managed under the direction of  
the
Trust's  Board  of Trustees.  The  Trustees approve  all  significant 
agreements
between the Trust  and the  persons or companies  that furnish  services to  
the
Fund,   including   agreements   with  its   Distributor,   Investment  
Adviser,
Administrator, Custodian and  Transfer Agent. The  day-to-day operations of  
the
Fund  are  delegated to  the Fund's  Investment  Adviser and  Administrator. 
The
Statement of  Additional  Information  relating to  the  Fund  contains  
general
background  information  regarding each  Trustee  and executive  officer  of 
the
Trust.
    
 
                                       8
<PAGE>
   
DISTRIBUTOR
    
   
    Lehman Brothers, located at Three World Financial Center, New York, New 
York
10285, is the Distributor of the Fund's shares. Lehman Brothers, a leading  
full
service  investment  firm, meets  the  diverse financial  needs  of 
individuals,
institutions and governments around the world. Lehman Brothers has entered  
into
a   Distribution  Agreement  with  the  Trust  pursuant  to  which  it  has  
the
responsibility for distributing shares of the Fund.
    
 
INVESTMENT ADVISER--LEHMAN BROTHERS GLOBAL ASSET MANAGEMENT INC.
 
   
    Lehman Brothers Global Asset Management  Inc. ("LBGAM"), located at 3  
World
Financial  Center, New  York, New  York 10285,  serves as  the Fund's 
Investment
Adviser. LBGAM is  a wholly owned  subsidiary of Lehman  Brothers Holdings  
Inc.
("Holdings").  LBGAM,  together with  other  Lehman Brother  investment 
advisory
affiliates, serves as  Investment Adviser  to investment  companies and  
private
accounts  and  has assets  under management  in  excess of  [$15] billion  as 
of
_______, 1994.
    
 
   
    As  Investment  Adviser  to  the  Fund,  LBGAM  will  among  other   
things,
participate  in  the  formulation  of the  Fund's  investment  policies, 
analyze
economic trends  affecting  the  Fund,  and  monitor  and  evaluate  the  
Fund's
investment objective and policies and the Fund's investment performance. For 
its
services  LBGAM is entitled to receive a monthly fee from the Fund at the 
annual
rate of .10% of the value of the Fund's average daily net assets. For the 
period
February 8,  1993  (commencement  of  operations) to  January  31,  1994,  
LBGAM
received an advisory fee from the Fund in the amount of _%.
    
 
   
ADMINISTRATOR AND TRANSFER AGENT--THE SHAREHOLDER SERVICE GROUP, INC.
    
   
    The  Shareholder  Services Group,  Inc.  ("TSSG"), located  at  One 
Exchange
Place, 53  State  Street, Boston,  Massachusetts  02109, serves  as  the  
Fund's
Administrator  and Transfer  Agent. TSSG is  a wholly owned  subsidiary of 
First
Data Corporation. As Administrator, TSSG calculates  the net asset value of  
the
Fund's  shares and generally assists in all aspects of the Fund's 
administration
and operation. As  compensation for  TSSG's services as  Administrator, TSSG  
is
entitled  to receive from the Fund  a monthly fee at the  annual rate of .10% 
of
the value of  the Fund's  average daily  net assets.  TSSG is  also entitled  
to
receive a fee from the Fund for its services as Transfer Agent. TSSG pays 
Boston
Safe,  the Fund's  Custodian, a  portion of  its monthly  administration fee 
for
custody services rendered to the Fund.
    
 
   
CUSTODIAN--BOSTON SAFE DEPOSIT AND TRUST COMPANY
    
   
    Boston Safe, a wholly owned subsidiary of The Boston Company, Inc.,  
located
at  One  Boston  Place,  Boston,  Massachusetts  02108,  serves  as  the  
Fund's
Custodian.
    
 
SERVICE ORGANIZATIONS
 
   
    Financial institutions, such  as banks,  savings and  loan associations  
and
other such institutions ("Service Organizations") and/or institutional 
customers
of  Service Organizations may purchase  Class B or Class  C shares. These 
shares
are identical in all respects to Class  A shares except that they bear the  
fees
described below and enjoy certain exclusive voting rights on matters relating 
to
these fees. The Fund will enter into an agreement with each Service 
Organization
whose  customers ("Customers") are the  beneficial owners of Class  B or Class 
C
shares that requires  the Service  Organization to provide  certain services  
to
Customers  in consideration of the Fund's payment  of service fees at the 
annual
rate of .25% or .35%, respectively of  the average daily net asset value of  
the
respective  Class  beneficially owned  by  Customers. Such  services,  which 
are
described  more  fully  in  the   Statement  of  Additional  Information   
under
"Management    of    the    Funds    Service    Organizations,"    may   
include
    
 
                                       9
<PAGE>
   
aggregating and processing purchase and  redemption requests from Customers  
and
placing  net  purchase and  redemption orders  with Lehman  Brothers; 
processing
dividend payments from the  Fund on behalf  of Customers; providing  
information
periodically  to Customers showing their positions in shares; arranging for 
bank
wires; responding to Customer inquiries relating to the services provided by 
the
Service Organization  and  handling  correspondence; acting  as  shareholder  
of
record  and nominee; and providing reasonable  assistance in connection with 
the
distribution of shares to Customers. Services  provided with respect to Class  
B
shares  will generally be more limited than those provided with respect to 
Class
C shares. Under the terms of the agreements, Service Organizations are  
required
to  provide  to their  Customers a  schedule of  any fees  that they  may 
charge
Customers in connection  with their investments  in Class B  or Class C  
shares.
Class  A shares are  sold to financial  institutions that have  not entered 
into
servicing agreements  with the  Fund  in connection  with their  investments.  
A
salesperson  and  any person  entitled to  receive  compensation for  selling 
or
servicing shares of the Fund may  receive different compensation for selling  
or
servicing one Class of shares over another Class.
    
 
EXPENSES
 
   
    The  Fund bears all of its own  expenses. The Fund's expenses include 
taxes,
interest, fees and  salaries of the  Trust's trustees and  officers who are  
not
directors,  officers or employees of  the Fund's service contractors, 
Securities
and Exchange  Commission fees,  state securities  qualification fees,  costs  
of
preparing and printing prospectuses for regulatory purposes and for 
distribution
to  investors,  advisory  and  administration fees,  charges  of  the 
Custodian,
Transfer Agent and dividend disbursing agent, Service Organization fees, 
certain
insurance premiums, outside  auditing and legal  expenses, costs of  
shareholder
reports  and shareholder meetings and any  extraordinary expenses. The Fund 
also
pays for brokerage fees and commissions (if any) in connection with the 
purchase
and sale of  portfolio securities. In  order to maintain  a competitive  
expense
ratio  during 1994, LBGAM and TSSG have agreed voluntarily to reimburse the 
Fund
if and to the extent that the Fund's total operating expenses (other than 
taxes,
interest, brokerage fees and commissions, Rule 12b-1 fees under the 1940 Act 
and
extraordinary expenses) exceed .16% of average daily net assets through 
December
31,  1994.  The  Investment  Adviser   and  Administrator  intend  to   
continue
voluntarily  to  reimburse  the Fund  to  the  extent necessary  to  maintain 
an
annualized expense ratio at a  level no greater than  .18% of average daily  
net
assets  thereafter.  This voluntary  reimbursement  will not  be  changed 
unless
investors are provided  at least  60 days'  advance notice.  In addition,  
these
service  providers have agreed to  reimburse the Fund to  the extent required 
by
applicable state law for certain expenses that are described in the Statement 
of
Additional Information  relating  to  the  Fund. Any  fees  charged  by  
Service
Organizations  or other institutional investors to their customers in 
connection
with investments in Fund shares are not reflected in the Fund's expenses.
    
 
   
                                     YIELDS
    
 
   
    ** 7 From time to time the "yields", "effective yields" and  "tax-
equivalent
yields"  for Class A, Class B and Class C shares may be quoted in 
advertisements
or in reports to investors. Yield  figures are based on historical earnings  
and
are  not  intended  to  indicate  future  performance.  The  "yield"  quoted  
in
advertisements for  a particular  class or  sub-class of  shares refers  to  
the
income  generated by an investment in such  shares over a specified period 
(such
as a seven-day  period) identified  in the  advertisement. This  income is  
then
"annualized,"  that is, the amount of  income generated by the investment 
during
that period is  assumed to be  generated each  week over a  52-week or  one-
year
period  and is shown as a percentage of the investment. The "effective yield" 
is
calculated similarly but, when annualized, the income earned by an investment 
in
a particular class or sub-class
    
 
                                       10
<PAGE>
   
is assumed to be reinvested. The "effective yield" will be slightly higher  
than
the  "yield" because of the compounding effect of this assumed reinvestment. 
The
"tax-equivalent yield"  demonstrates the  level of  taxable yield  necessary  
to
produce  an after-tax  yield equivalent  to the  Fund's tax-free  yield for 
each
Class of shares. It is calculated by increasing the yield (calculated as  
above)
by  the amount  necessary to reflect  the payment  of federal taxes  at a 
stated
rate. The "tax-equivalent yield" will always  be higher than the "yield."  
Yield
quotations are computed separately for each Class of shares.
    
 
   
    **  8 The Fund's yields may be compared  to those of other mutual funds 
with
similar objectives, to stock or other relevant indices, or to rankings  
prepared
by independent services or other financial or industry publications that 
monitor
the performance of mutual funds. For example, such data are reported in 
national
financial  publications such  as IBC/DONOGHUE'S  MONEY FUND  REPORT-R-, THE 
WALL
STREET JOURNAL and  THE NEW YORK  TIMES, reports prepared  by LIPPER  
ANALYTICAL
SERVICE, INC. and publications of a local or regional nature.
    
 
   
    **  9  THE  FUND'S  YIELD  FIGURES FOR  A  CLASS  OF  SHARES  REPRESENT 
PAST
PERFORMANCE, WILL FLUCTUATE AND  SHOULD NOT BE  CONSIDERED AS REPRESENTATIVE  
OF
FUTURE RESULTS. The yield of any investment is generally a function of 
portfolio
quality  and maturity, type of investment  and operating expenses. Since 
holders
of Class B  or Class C  shares bear the  service fees for  services provided  
by
Service Organizations, the net yield on such shares can be expected at any 
given
time  to be  lower than the  net yield  on Class A  shares. Any  fees charged 
by
Service  Organizations  or  other  institutional  investors  directly  to  
their
customers in connection with investments in Fund shares are not reflected in 
the
Fund's  expenses or yields.  The methods used  to compute the  Fund's yields 
are
described in more detail in  the Statement of Additional Information.  
Investors
may  call 1-800-238-2560 (Class  A shares code:  004; Class B  shares code: 
104;
Class C shares code: 204) to obtain current yield information.
    
 
   
                    DESCRIPTION OF SHARES AND MISCELLANEOUS
    
 
    * 1 moved from here; text not shown
 
    * 2 moved from here; text not shown
 
   
    * 3 moved from here; text not shown
    
 
    * 4 moved from here; text not shown
 
    * 5 moved from here; text not shown
 
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    The Trust  is a  Massachusetts business  trust established  on November  
25,
1992.
    
 
   
    The  Trust's Declaration of Trust authorizes  the Board of Trustees to 
issue
an unlimited number of full and fractional shares of beneficial interest in  
the
Trust  and  to classify  or  reclassify any  unissued  shares into  one  or 
more
additional classes of  shares. The  Trust is an  open-end management  
investment
company, which offers twelve portfolios: Prime Money Market Fund (Class A, 
Class
B  and Class C),  Prime Value Money Market  Fund (Class A, Class  B, Class C 
and
Class D), Government Obligations  Money Market Fund (Class  A, Class B, Class  
C
and Class D) 100% Government Obligations Money Market Fund (Class A, Class B 
and
Class  C), Treasury Instruments Money Market Fund II (Class A, Class B and 
Class
C), 100% Treasury Instruments Money Market Fund (Class A, Class B and Class  
C),
Tax-Free  Money Market  Fund (Class  A, Class  B and  Class C),  Municipal 
Money
Market Fund (Class A, Class B, Class C and Class D), California Municipal  
Money
Market Fund
    
 
                                       11
<PAGE>
   
(Class  A, Class B and Class C), New  York Municipal Money Market Fund (Class 
A,
Class B and Class C), Floating Rate  U.S. Government Fund (Class A and Class  
B)
and Short Duration U.S. Government Fund (Class A and Class B). Shares of the 
New
York  Municipal Money  Market Fund  are not  currently sold  to the  public. 
The
Declaration of Trust further authorizes  the Trustees to classify or  
reclassify
any class of shares into one or more sub-classes.
    
 
   
    THIS  PROSPECTUS AND  THE STATEMENT  OF ADDITIONAL  INFORMATION 
INCORPORATED
HEREIN RELATE PRIMARILY TO THE FUND  AND DESCRIBE ONLY THE INVESTMENT  
OBJECTIVE
AND  POLICIES, OPERATIONS,  CONTRACTS AND  OTHER MATTERS  RELATING TO  THE 
FUND.
INVESTORS WISHING  TO OBTAIN  SIMILAR INFORMATION  REGARDING THE  TRUST'S  
OTHER
PORTFOLIOS MAY OBTAIN SEPARATE PROSPECTUSES DESCRIBING THEM BY CONTACTING 
LEHMAN
BROTHERS AT 1-800-368-5556.
    
 
    The  Trust does not presently intend to hold annual meetings of 
shareholders
except as required by the 1940 Act or other applicable law. The Trust will  
call
a  meeting of shareholders for the purpose  of voting on the question of 
removal
of a member of the Board of Trustees upon written request of shareholders 
owning
at least 10% of the outstanding shares of the Trust entitled to vote.
 
    Each Fund share  represents an  equal proportionate interest  in the  
assets
belonging  to the  Fund. Each  share, which  has a  par value  of $.001,  has 
no
preemptive or conversion rights.  When issued for payment  as described in  
this
Prospectus, shares will be fully paid and non-assessable.
 
    Holders  of the Fund's shares will vote in the aggregate and not by class 
on
all matters, except where otherwise required by law and except that only Class 
B
or Class C  shares, as  the case may  be, will  be entitled to  vote on  
matters
submitted  to a vote of shareholders  pertaining to the Fund's arrangements 
with
Service Organizations with respect to the relevant Class. Further,  
shareholders
of all of the Trust's portfolios will vote in the aggregate and not by 
portfolio
except  as otherwise required  by law or  when the Board  of Trustees 
determines
that the matter to be voted upon affects only the interests of the  
shareholders
of  a particular portfolio.  (See the Statement  of Additional Information 
under
"Miscellaneous" for examples where the  1940 Act requires voting by  
portfolio.)
Shareholders  of the  Trust are entitled  to one  vote for each  full share 
held
(irrespective of class or portfolio) and fractional votes for fractional  
shares
held.  Voting rights are  not cumulative; and, accordingly,  the holders of 
more
than 50% of the aggregate shares of the Trust may elect all of the trustees.
 
   
    For information  concerning  the  redemption of  Fund  shares  and  
possible
restrictions on their transferability, see "Purchase and Redemption of 
Shares."
    
 
    * 7 moved from here; text not shown
 
    * 8 moved from here; text not shown
 
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                                       12
<PAGE>
                LEHMAN BROTHERS INSTITUTIONAL FUNDS GROUP TRUST
 
   
                            Prime Money Market Fund
                         Prime Value Money Market Fund
                    Government Obligations Money Market Fund
                 100% Government Obligations Money Market Fund
                   Treasury Instruments Money Market Fund II
                  100% Treasury Instruments Money Market Fund
                          Municipal Money Market Fund
                           Tax-Free Money Market Fund
                     California Municipal Money Market Fund
                      New York Municipal Money Market Fund
    
                            ------------------------
 
   
                       Floating Rate U.S. Government Fund
                      Short Duration U.S. Government Fund
    
 
                            ------------------------
   
NO  PERSON  HAS  BEEN  AUTHORIZED  TO  GIVE  ANY  INFORMATION  OR  TO  MAKE  
ANY
REPRESENTATIONS NOT CONTAINED IN THIS PROSPECTUS, OR IN THE FUND'S STATEMENT  
OF
ADDITIONAL  INFORMATION INCORPORATED HEREIN BY REFERENCE, IN CONNECTION WITH 
THE
OFFERING MADE BY  THIS PROSPECTUS  AND, IF GIVEN  OR MADE,  SUCH INFORMATION  
OR
REPRESENTATIONS  MUST NOT BE RELIED UPON AS  HAVING BEEN AUTHORIZED BY THE 
TRUST
OR ITS DISTRIBUTOR. THIS PROSPECTUS DOES NOT CONSTITUTE AN OFFERING BY THE 
TRUST
OR BY  THE  DISTRIBUTOR IN  ANY  JURISDICTION IN  WHICH  SUCH OFFERING  MAY  
NOT
LAWFULLY BE MADE.
    
                              -------------------
                               TABLE OF CONTENTS
 
   
<TABLE>
<CAPTION>
                                              PAGE
                                            ---------
<S>                                         <C>
Background and Expense Information........          2
Financial Highlights......................          3
Investment Objective and Policies.........          4
Purchase and Redemption of Shares.........          5
Dividends.................................          7
Taxes.....................................          8
Management of the Fund....................          8
Yields....................................         10
Description of Shares.....................         11
</TABLE>
    
 
                                100% GOVERNMENT
                                  OBLIGATIONS
                               MONEY MARKET FUND
 
                              -------------------
 
   
                                   PROSPECTUS
                                  May __, 1994
    
 
                             ---------------------
 
                                LEHMAN BROTHERS
 
   
THIS PROSPECTUS AND THE STATEMENT OF ADDITIONAL INFORMATION INCORPORATED 
HEREIN
  RELATE PRIMARILY TO THE FUND AND DESCRIBE ONLY THE INVESTMENT OBJECTIVE AND
    POLICIES, OPERATIONS, CONTRACTS AND OTHER MATTERS RELATING TO THE FUND.
  INVESTORS WISHING TO OBTAIN SIMILAR INFORMATION REGARDING THE TRUST'S OTHER
PORTFOLIOS MAY OBTAIN SEPARATE PROSPECTUSES DESCRIBING THEM BY CONTACTING 
LEHMAN
                          BROTHERS AT 1-800-368-5556.
    


<PAGE>
PROSPECTUS
 
                     TREASURY INSTRUMENTS MONEY MARKET FUND
 
                       An Investment Portfolio Offered By
                Lehman Brothers Institutional Funds Group Trust
 
   
    Lehman  Brothers Institutional Funds Group Trust (the "Trust") is a no-
load,
open-end, management investment company. The shares described in this 
Prospectus
represent interests in the Treasury Instruments Money Market Fund portfolio 
(the
"Fund"), one of a family of money market portfolios of the Trust.
    
 
   
    The Fund's INVESTMENT OBJECTIVE is to provide current income with  
liquidity
and  security of principal. The  Fund invests in a  portfolio consisting of 
U.S.
Treasury bills, notes and direct obligations of the U.S. Treasury and 
repurchase
agreements relating to direct Treasury obligations.
    
 
    Fund shares may not be purchased by individuals directly, but  
INSTITUTIONAL
INVESTORS  MAY PURCHASE SHARES for accounts  maintained by individuals. The 
Fund
currently offers  three  classes of  shares.  In  addition to  Class  A  
shares,
institutional  investors may  purchase on behalf  of their customers  Class B 
or
Class C shares which accrue daily dividends in the same manner as Class A 
shares
but bear all  fees payable by  the Fund to  institutional investors for  
certain
services  they provide to the beneficial  owners of such shares. See 
"Management
of the Fund--Service Organizations."
 
   
    AN INVESTMENT IN  THE FUND  IS NEITHER INSURED  NOR GUARANTEED  BY THE  
U.S.
GOVERNMENT. THERE CAN BE NO ASSURANCE THAT THE FUND WILL BE ABLE TO MAINTAIN 
ITS
NET ASSET VALUE OF $1.00 PER SHARE.
    
 
   
    LEHMAN  BROTHERS, INC.  ("LEHMAN BROTHERS")  sponsors the  Fund and  acts 
as
Distributor of its shares. LEHMAN  BROTHERS GLOBAL ASSET MANAGEMENT INC.  
serves
as the Fund's Investment Adviser.
    
 
    The  address of the Fund is One Exchange Place, Boston, Massachusetts 
02109.
The Fund can be  contacted as follows: FOR  PURCHASE AND REDEMPTION ORDERS  
ONLY
CALL 800-851-3134; for yield information call 800-238-2560 (Class A shares 
code:
005;  Class B shares code: 105; Class C shares code: 205); for other 
information
call 800-368-5556.
 
   
    This Prospectus briefly sets forth  certain information about the Fund  
that
investors  should  know before  investing. Investors  are  advised to  read 
this
Prospectus and retain it for future reference. Additional information about  
the
Fund,  contained in a Statement of Additional Information dated May __, 1994, 
as
amended or supplemented from  time to time, has  been filed with the  
Securities
and  Exchange Commission and is available to investors without charge by 
calling
the Fund's distributor at 800-368-5556. The Statement of Additional  
Information
is incorporated in its entirety by reference into this Prospectus.
    
 
   
    SHARES  OF THE  FUND ARE  NOT DEPOSITS OR  OBLIGATIONS OF,  OR GUARANTEED 
OR
ENDORSED BY, ANY BANK, AND SUCH SHARES ARE NOT FEDERALLY INSURED BY THE  
FEDERAL
DEPOSIT INSURANCE CORPORATION, THE FEDERAL RESERVE BOARD OR ANY OTHER 
GOVERNMENT
AGENCY.  SHARES  OF THE  FUND INVOLVE  CERTAIN  INVESTMENT RISKS,  INCLUDING 
THE
POSSIBLE LOSS OF PRINCIPAL.
    
                           --------------------------
 
THESE SECURITIES HAVE  NOT BEEN APPROVED  OR DISAPPROVED BY  THE SECURITIES  
AND
  EXCHANGE   COMMISSION  OR  ANY  STATE  SECURITIES  COMMISSION  NOR  HAS  THE
    SECURITIES AND EXCHANGE  COMMISSION OR ANY  STATE SECURITIES  COMMISSION
      PASSED  UPON  THE  ACCURACY  OR  ADEQUACY  OF  THIS  PROSPECTUS. ANY
                REPRESENTATION TO THE CONTRARY IS A CRIMINAL OFFENSE.
                           --------------------------
                                LEHMAN BROTHERS
 
   
May __, 1994
    
<PAGE>
                       BACKGROUND AND EXPENSE INFORMATION
 
   
    The  following Expense Summary lists the costs and expenses that an 
investor
in the Fund can  expect to incur  during the Fund's  current fiscal year  
ending
January  31, 1995. The Fund  offers three separate classes  of shares. Shares 
of
each class represent  equal, pro  rata interests in  the Fund  and accrue  
daily
dividends  in the same manner except that Class B and C shares bear fees 
payable
by the  Fund  (at  the  rate  of .25%  and  .35%  per  annum,  respectively)  
to
institutional  investors for services  they provide to  the beneficial owners 
of
such shares. See "Management of the Fund--Service Organizations."
    
 
                                EXPENSE SUMMARY
 
   
<TABLE>
<CAPTION>
                                        CLASS A CLASS B CLASS C
                                        SHARES  SHARES  SHARES
                                        ------- ------- -------
<S>                                     <C>     <C>     <C>
ANNUAL FUND OPERATING EXPENSES
 (as a percentage of average net assets)
    Advisory Fees
     (net of applicable fee waivers)....  0.09%*  0.09%*  0.09%*
    Rule 12b-1 fees.....................  none    .25%    .35%
    Other Expenses--including
     Administration Fees
     (net of applicable fee waivers)....  0.06%  0.06%*  0.06%*
                                        ------- ------- -------
    Total Fund Operating Expenses (after
     fee waivers)*......................   .16%   .41%    .51%
                                        ------- ------- -------
                                        ------- ------- -------
<FN>
---------
* The Expense Summary above has  been restated to reflect the Fund's  
Investment
  Adviser's  and Administrator's Voluntary  reimbursement arrangements in 
effect
  for the Fund's fiscal year ending January  31, 1995. With respect to Class  
A,
  Class  B and  Class C  share for the  month of  January, 1995,  the Total 
Fund
  Operating Expenses including reimbursement of  expenses are anticipated to  
be
  .18%, .43%, and .53%, respectively.
</TABLE>
    
 
   
    In  order to  maintain a competitive  expense ratio during  1994, the 
Funds'
Investment Adviser and  Administrator have voluntarily  agreed to reimburse  
the
Fund  if and  to the  extent that  total operating  expenses (other  than 
taxes,
interest, brokerage  fees and  commissions, Rule  12b-1 fees  and  
extraordinary
expenses) exceed .16% of average daily net assets through December 31, 1994. 
For
the years 1995-1997, the Investment Adviser and Administrator intend to 
continue
voluntarily  to  reimburse  the Fund  to  the  extent necessary  to  maintain 
an
annualized expense ratio at a  level no greater than  .18% of average daily  
net
assets.  The voluntary  reimbursement arrangements  described above  will not 
be
changed unless shareholders are provided at  least 60 days' advance notice.  
The
maximum   annual  contractual  fees  payable   to  the  Investment  Adviser  
and
Administrator total .20% of  average daily net  assets. Absent reimbursement  
of
expenses,  the Total  Fund Operating Expenses  of Class  A, Class B  and Class 
C
would be .25%,  .50% and  .60%, respectively, of  the Fund's  average daily  
net
assets.
    
---------
   
EXAMPLE:  An investor would  pay the following expenses  on a $1,000 
investment,
assuming (1) a  5% annual  return and  (2) redemption at  the end  of each  
time
period with respect to the following shares:
    
 
   
<TABLE>
<CAPTION>
                    1 YEAR  3 YEARS  5 YEARS  10 YEARS
                    ------- -------- -------- --------
<S>                 <C>     <C>      <C>      <C>
Class A shares:.....    $2     $ 5      $ 9      $20
Class B shares:.....    $4     $13      $23      $52
Class C shares:.....    $5     $16      $29      $64
</TABLE>
    
 
   
THE  FOREGOING SHOULD NOT BE CONSIDERED  A REPRESENTATION OF ACTUAL EXPENSES 
AND
RATES OF RETURN, WHICH MAY BE GREATER OR LESSER THAN THOSE SHOWN.
    
 
                                       2
<PAGE>
   
    The purpose of the foregoing table is to assist an investor in 
understanding
the various costs and expenses that an  investor in the Fund will bear  
directly
or  indirectly. Certain Service Organizations (as defined below) also may 
charge
their clients fees in connection with investments in Fund shares, which fees 
are
not reflected in the table. For more complete descriptions of the various  
costs
and  expenses, see "Management of the Fund" in this Prospectus and the 
Statement
of Additional Information.
    
 
   
                              FINANCIAL HIGHLIGHTS
    
 
   
                     TREASURY INSTRUMENTS MONEY MARKET FUND
    
 
   
<TABLE>
<CAPTION>
                                                PERIOD        PERIOD
                                                 ENDED         ENDED
                                               1/31/94*      1/31/94*
                                             ------------- -------------
<S>                                          <C>           <C>
                                                 CLASS A       CLASS B
                                             ------------- -------------
Net asset value, beginning of period.........       $1.00        $1.00
                                             ------------- -------------
Net investment income(1).....................      0.0292       0.0100
Dividends from net investment income.........     (0.0292)     (0.0100)
                                             ------------- -------------
Net asset value, end of period...............       $1.00        $1.00
                                             ------------- -------------
                                             ------------- -------------
Total return(2)..............................        2.94%        1.00%
                                             ------------- -------------
                                             ------------- -------------
Ratios to average net assets/supplemental
 data:
  Net assets, end of period (in 000's).......     $ 3,000      --#
  Ratio of net investment income to average
   net assets(3).............................        2.99%        2.74%
  Ratio of operating expenses to average net
   assets(3)(4)..............................        0.00%        0.25%
<FN>
---------
*     The Treasury Instruments  Money Market  Fund Class  A and  Class B  
Shares
      commenced   operations  on   February  8,   1993,  and   April  21,  
1993,
      respectively.
(1)   Net investment  loss before  waiver  of fees  by the  Investment  
Adviser,
      Administrator, Custodian and Transfer Agent and expenses reimbursed by 
the
      Investment  Adviser  and  Administrator  for  Class  A  and  Class  B 
were
      $(0.0003) and $(0.0010), respectively.
(2)   Total return represents aggregate total return for the period indicated.
(3)   Annualized.
(4)   Annualized expense ratio before waiver of fees by the Investment  
Adviser,
      Administrator, Custodian and Transfer Agent and expenses reimbursed by 
the
      Investment  Adviser and Administrator  for Class A and  Class B were 
3.02%
      and 3.27%, respectively.
#     Total net assets for Class B was $100 at January 31, 1994.
</TABLE>
    
 
                       INVESTMENT OBJECTIVE AND POLICIES
 
    The Fund's  investment  objective  is  current  income  with  liquidity  
and
security  of principal.  The Fund,  which operates  as a  diversified 
investment
company, invests solely  in direct  obligations of  the U.S.  Treasury, such  
as
Treasury  bills and notes and repurchase  agreements relating to direct 
Treasury
obligations. The Fund invests  only in securities which  are purchased with  
and
payable   in   U.S.   dollars  (I.E.,   U.S.   dollar   denominated  
securities)
 
                                       3
<PAGE>
and which  have (or,  pursuant  to regulations  adopted  by the  Securities  
and
Exchange  Commission, are deemed  to have) remaining maturities  of 13 months 
or
less at the date of purchase by  the Fund. The Fund maintains a  dollar-
weighted
average portfolio maturity of 90 days or less.
 
    Securities  issued or  guaranteed by  the U.S.  Government have 
historically
involved little risk of loss of principal  if held to maturity. However, due  
to
fluctuations  in interest  rates, the market  value of such  securities may 
vary
during the period  a shareholder  owns shares  of the  Fund. Certain  
government
securities  held by  the Fund may  have remaining  maturities exceeding 
thirteen
months if such securities  provide for adjustments in  their interest rates  
not
less frequently than every thirteen months.
 
    The  Fund may  purchase government  securities from  financial 
institutions,
such  as  banks  and  broker-dealers,  subject  to  the  seller's  agreement  
to
repurchase  them at an agreed upon time and price ("repurchase agreements"). 
The
Fund will not invest more than 10% of the value of its net assets in  
repurchase
agreements  which do  not provide for  settlement within seven  days. The 
seller
under a  repurchase agreement  will be  required to  maintain the  value of  
the
securities  subject  to the  agreement  at not  less  than the  repurchase 
price
(including accrued  interest). Default  by or  bankruptcy of  the seller  
would,
however,  expose the Fund to  possible loss because of  adverse market action 
or
delay in connection with the disposition of the underlying obligations.
 
    The Fund may borrow  funds for temporary purposes  by entering into  
reverse
repurchase  agreements in accordance with  the investment restrictions 
described
below. Pursuant to such agreements, the Fund would sell portfolio securities  
to
financial  institutions and agree to repurchase them  at an agreed upon date 
and
price. The Fund would  consider entering into  reverse repurchase agreements  
to
avoid  otherwise selling securities during unfavorable market conditions to 
meet
redemptions. Reverse  repurchase agreements  involve the  risk that  the  
market
value  of the portfolio securities sold by  the Fund may decline below the 
price
of the securities the Fund is obligated to repurchase.
 
    The Fund  may  purchase securities  on  a "when-issued"  basis.  When-
issued
securities  are securities purchased  for delivery beyond  the normal 
settlement
date at a  stated price  and yield.  The Fund will  generally not  pay for  
such
securities or start earning interest on them until they are received. 
Securities
purchased  on a when-issued  basis are recorded  as an asset  and are subject 
to
changes in value based upon changes in the general level of interest rates.  
The
Fund expects that commitments to purchase when-issued securities will not 
exceed
25%  of the value of its total assets absent unusual market conditions. The 
Fund
does not intend to purchase when-issued securities for speculative purposes  
but
only in furtherance of its investment objective.
 
    The Fund may also lend its portfolio securities to financial institutions 
in
accordance  with the investment restrictions described  below. The Fund may 
lend
portfolio securities against collateral consisting  of cash or securities  
which
are  consistent with  the Fund's  permitted investments,  which is  equal at 
all
times to  at least  100% of  the value  of the  securities loaned.  There is  
no
limitation  on the  amount of  securities that may  be loaned.  Such loans 
would
involve risks of delay in receiving  additional collateral or in recovering  
the
securities  loaned or even loss of rights  in the collateral should the 
borrower
of the  securities  fail  financially.  However, loans  will  be  made  only  
to
borrowers  deemed by the  Fund's investment adviser  to be of  good standing 
and
only when, in the  adviser's judgment, the  income to be  earned from the  
loans
justifies the attendant risks.
 
    There  can  be  no  assurance  that the  Fund  will  achieve  its 
investment
objective.
 
INVESTMENT LIMITATIONS
 
    The Fund's  investment  objective  and  policies  described  above  are  
not
fundamental  and may be changed by the  Trust's Board of Trustees without a 
vote
of shareholders. If there is a change in the investment objective,  
shareholders
should  consider whether the Fund remains  an appropriate investment in light 
of
their then current financial position and needs. The Fund's borrowing 
limitation
summarized below may not be changed without
 
                                       4
<PAGE>
the affirmative vote of  the holders of majority  of its outstanding shares.  
(A
complete  list of  the investment limitations  that cannot be  changed without 
a
vote of shareholders  is contained  in the Statement  of Additional  
Information
under "Investment Objective and Policies.")
 
    The  Fund may not borrow money except  from banks for temporary purposes 
and
then in an amount not exceeding 10% of the value of the Fund's total assets,  
or
mortgage,  pledge or hypothecate  its assets except in  connection with any 
such
borrowing and in  amounts not  in excess  of the  lesser of  the dollar  
amounts
borrowed  or 10% of  the value of  the Fund's total  assets at the  time of 
such
borrowing. Additional investments will not be made when borrowings exceed 5%  
of
the Fund's assets.
 
                       PURCHASE AND REDEMPTION OF SHARES
 
PURCHASE PROCEDURES
 
   
    Shares  of the Fund  are sold at the  net asset value per  share of the 
Fund
next determined  after receipt  of  a purchase  order  by Lehman  Brothers,  
the
Distributor of the Fund's shares. Purchase orders for shares are accepted by 
the
Fund  only on days on which both Lehman Brothers and the Federal Reserve Bank 
of
Boston are open  for business  and must be  transmitted to  Lehman Brothers,  
by
telephone  at 800-851-3134. Orders received before noon, Eastern time, for 
which
payment has been  received by  Boston Safe  Deposit and  Trust Company  
("Boston
Safe"),  the Fund's custodian, will be executed at noon. Orders received 
between
noon and 3:00 P.M., Eastern time, will  be executed at 3:00 P.M., Eastern  
time,
if payment has been received by Boston Safe by 3:00 P.M. and will be executed 
at
4:00  P.M. if payment has been received  by 4:00 P.M. Orders received after 
3:00
P.M. and orders for which  payment has not been  received by 4:00 P.M.,  
Eastern
time,  will not be accepted and notice  thereof will be given to the 
institution
placing the order. Payment  for Fund shares  may be made  only in federal  
funds
immediately available to Boston Safe. (Payment for orders which are not 
received
or  accepted by  Lehman Brothers  will be returned  after prompt  inquiry to 
the
sending institution.)  The Fund  may  in its  discretion  reject any  order  
for
shares.
    
 
   
    The minimum aggregate initial investment by an institution in the 
investment
portfolios  that comprise the  Trust is $1  million (with not  less than 
$25,000
invested in  any  one  investment  portfolio offered  by  the  Trust);  
however,
broker-dealers  and other institutional  investors may set  a higher minimum 
for
their customers. To reach the  minimum Trust-wide initial investment,  
purchases
of  shares may be  aggregated over a period  of six months.  There is no 
minimum
subsequent investment.
    
 
   
    Conflict of interest restrictions may  apply to an institution's receipt  
of
compensation paid by the Fund on fiduciary funds that are invested in Class B 
or
Class  C  shares.  See  also "Management  of  the  Fund--Service 
Organizations."
Institutions, including banks regulated by  the Comptroller of the Currency  
and
investment  advisers and other money managers subject to the jurisdiction of 
the
Securities and Exchange Commission, the Department of Labor or state  
securities
commissions,  should  consult their  legal  advisors before  investing 
fiduciary
funds in Class B or Class C shares.
    
 
    SUBACCOUNTING SERVICES.  Institutions are  encouraged to open single  
master
accounts.  However, certain  institutions may wish  to use  the transfer 
agent's
subaccounting system to minimize their internal recordkeeping requirements.  
The
transfer  agent  charges a  fee  based on  the  level of  subaccounting 
services
rendered. Institutions holding Fund shares in a fiduciary, agency, custodial  
or
similar  capacity may charge or pass through subaccounting fees as part of or 
in
addition to normal trust or agency account  fees. They may also charge fees  
for
other  services provided which may  be related to the  ownership of Fund 
shares.
This Prospectus should, therefore, be  read together with any agreement  
between
the  customer and the institution with regard to the services provided, the 
fees
charged for those services and any restrictions and limitations imposed.
 
                                       5
<PAGE>
REDEMPTION PROCEDURES
 
   
    Redemption orders must be transmitted to Lehman Brothers at  1-800-581-
3134.
Payment  for redeemed shares for which a  redemption order is received by 
Lehman
Brothers before 3:00 P.M., Eastern time, on a day that both Lehman Brothers  
and
the  Federal Reserve Bank  of Boston are  open for business  is normally made 
in
federal funds  wired to  the redeeming  shareholder on  the same  business  
day.
Payment  for other  redemption orders which  are received between  3:00 P.M. 
and
4:00 P.M., Eastern time, is normally wired in federal funds on the next 
business
day following redemption.
    
 
    Shares are redeemed at the net  asset value per share next determined  
after
Lehman  Brothers' receipt of the redemption order. While the Fund intends to 
use
its best  efforts to  maintain  its net  asset value  per  share at  $1.00,  
the
proceeds  paid to  a shareholder upon  redemption may  be more or  less than 
the
amount invested  depending  upon  a share's  net  asset  value at  the  time  
of
redemption. To allow the Fund's investment adviser and sub-investment adviser 
to
manage  the  Fund  effectively, investors  are  strongly urged  to  initiate 
all
investments or redemptions of Fund shares as early in the day as possible and 
to
notify Lehman Brothers at least one day in advance of transactions in excess  
of
$5 million.
 
   
    The  Fund reserves the  right to wire redemption  proceeds within seven 
days
after receiving  the redemption  order if,  in the  judgment of  the  
Investment
Adviser, an earlier payment could adversely affect the Fund. The Fund shall 
have
the right to redeem involuntarily shares in any account at their net asset 
value
if the value of the account is less than $10,000 after sixty days' prior 
written
notice  to the  shareholder. Any  such redemption shall  be effected  at the 
net
asset value per share next determined after the redemption order is entered.  
If
during  the sixty-day period the shareholder  increases the value of its 
account
to $10,000 or more, no such redemption  shall take place. In addition, the  
Fund
may  redeem shares involuntarily or suspend the right of redemption as 
permitted
under the Investment Company Act of 1940, as amended (the "1940 Act"), or  
under
certain   special  circumstances  described  in   the  Statement  of  
Additional
Information under "Additional Purchase and Redemption Information."
    
 
   
VALUATION OF SHARES--NET ASSET VALUE
    
   
    The Fund's net asset  value per share for  purposes of pricing purchase  
and
redemption  orders is  determined by the  Fund's administrator as  of noon, 
3:00
P.M. and 4:00 P.M., Eastern time, on  each weekday, with the exception of  
those
holidays  on which either Lehman Brothers or  the Federal Reserve Bank of 
Boston
is closed. Currently, one or both of these institutions are closed on  
customary
national  business  holidays of  New Year's  Day, Martin  Luther King,  Jr. 
Day,
Presidents' Day (Washington's Birthday),  Good Friday, Memorial Day  
(observed),
Independence Day (observed), Labor Day, Columbus Day, Veterans Day, 
Thanksgiving
Day  and Christmas Day and on the preceding Friday or subsequent Monday when 
one
of these holidays  falls on a  Saturday or Sunday,  respectively. The net  
asset
value  per share of the Fund is calculated by adding the value of all 
securities
and other assets belonging to the Fund, subtracting liabilities and dividing 
the
result by the total  number of the Fund's  outstanding shares. In computing  
net
asset  value, the Fund uses the amortized  cost method of valuation as 
described
in the  Statement  of  Additional Information  under  "Additional  Purchase  
and
Redemption  Information." The Fund's  net asset value per  share for purposes 
of
pricing purchase and redemption  orders is determined  independently of the  
net
asset values of the shares of the Trust's other investment portfolios.
    
 
   
OTHER MATTERS
    
    Fund  shares are sold and redeemed without charge by the Fund. 
Institutional
investors purchasing  or holding  Fund shares  for their  customer accounts  
may
charge  customers  fees  for  cash management  and  other  services  provided 
in
connection with their accounts. A customer should, therefore, consider the 
terms
of its
 
                                       6
<PAGE>
account with  an  institution  before purchasing  Fund  shares.  An  
institution
purchasing  or redeeming  shares on behalf  of its customers  is responsible 
for
transmitting  orders  to  Lehman  Brothers  in  accordance  with  its   
customer
agreements.
 
                             MANAGEMENT OF THE FUND
 
   
    The  business and affairs of the Fund are managed under the direction of 
the
Trust's Board  of  Trustees. The  Trustees  approve all  significant  
agreements
between  the Trust  and the  persons or companies  that furnish  services to 
the
Fund,  including   agreements  with   its  Distributors,   Investment   
Adviser,
Administrator,  Custodian and Transfer  Agent. The day-to-day  operations of 
the
Fund are  delegated to  the  Fund's Investment  Adviser and  Administrator.  
The
Statement  of  Additional  Information  relating to  the  Fund  contains 
general
background information  regarding  each Trustee  and  executive officer  of  
the
Trust.
    
 
   
DISTRIBUTOR
    
   
    Lehman Brothers, located at Three World Financial Center, New York, New 
York
10285,  is the Distributor of the Fund's shares. Lehman Brothers, a leading 
full
service investment  firm,  meets the  diverse  financial needs  of  
individuals,
institutions  and governments around the world. Lehman Brothers has entered 
into
a  Distribution  Agreement  with  the  Trust  pursuant  to  which  it  has   
the
responsibility for distributing shares of the Fund.
    
 
INVESTMENT ADVISER--LEHMAN BROTHERS GLOBAL ASSET MANAGEMENT INC.
 
   
    Lehman  Brothers Global Asset Management Inc.  ("LBGAM"), located at 3 
World
Financial Center, New  York, New  York 10285,  serves as  the Fund's  
Investment
Adviser.  LBGAM is  a wholly owned  subsidiary of Lehman  Brothers Holdings 
Inc.
("Holdings"). LBGAM,  together with  other Lehman  Brothers investment  
advisory
affiliates,  serves as  Investment Adviser  to investment  companies and 
private
accounts and has assets under Management in excess of $15 billion.
    
 
   
    As  Investment  Adviser  to  the  Fund,  LBGAM  will,  among  other  
things,
participate  in  the  formulation  of the  Fund's  investment  policies, 
analyze
economic  trends  affecting  the  Fund  and  monitor  and  evaluate  the  
Fund's
investment  objective and policies and the  Fund's performance. For its 
services
LBGAM will be paid a monthly fee by the  Fund at the annual rate of .10% of  
the
value  of the Fund's average  daily net assets. For  the period February 8, 
1993
(commencement of operations) to January 31, 1994, LBGAM received an advisory 
fee
from the Fund in the amount of .__% of average daily net assets.
    
 
   
ADMINISTRATOR AND TRANSFER AGENT--SHAREHOLDER SERVICES GROUP
    
   
    The Shareholder  Services  Group, Inc.  ("TSSG"),  located at  One  
Exchange
Place,  53  State  Street, Boston,  Massachusetts  02109, serves  as  the 
Fund's
Administrator and Transfer  Agent. TSSG is  a wholly owned  subsidiary of  
First
Data  Corporation. As Administrator, TSSG calculates  the net asset value of 
the
Fund's shares and generally assists in all aspects of the Fund's  
administration
and  operation. As  compensation for TSSG's  services as  Administrator, TSSG 
is
entitled to receive from the Fund a monthly fee at the annual rate of 10% of 
the
value of the Fund's average daily net assets. TSSG is also entitled to receive 
a
fee from the Fund for its services as Transfer Agent. TSSG pays Boston Safe, 
the
Fund's Custodian,  a  portion of  its  monthly administration  fee  for  
custody
services rendered to the Fund.
    
 
   
CUSTODIAN--BOSTON SAFE DEPOSIT AND TRUST COMPANY
    
   
    Boston  Safe, a wholly owned subsidiary of The Boston Company, Inc., 
located
at  One  Boston  Place,  Boston,  Massachusetts  02108,  serves  as  the  
Fund's
Custodian.
    
 
                                       7
<PAGE>
SERVICE ORGANIZATIONS
 
   
    Institutional  investors, such as  banks, savings and  loan associations 
and
other financial  institutions  ("Service  Organizations")  and/or  
institutional
customers of Service Organizations may purchase Class B or Class C shares. 
These
shares are identical in all respects to Class A shares except that they bear 
the
fees  described  below  and enjoy  certain  exclusive voting  rights  on 
matters
relating to these fees. The Fund will enter into an agreement with each  
Service
Organization  whose customers ("Customers") are the beneficial owners of Class 
B
or Class C  shares that  requires the  Service Organization  to provide  
certain
services  to Customers in consideration of the Fund's payment of service fees 
at
the annual rate of  .25% or .35%,  respectively of the  average daily net  
asset
value  of the respective  class beneficially owned  by Customers. Such 
services,
which are described more fully in the Statement of Additional Information  
under
"Management  of  the  Funds--Service  Organizations,"  include  aggregating  
and
processing purchase  and  redemption requests  from  Customers and  placing  
net
purchase  and  redemption  orders  with  Lehman  Brothers;  processing  
dividend
payments  from  the   Fund  on  behalf   of  Customers;  providing   
information
periodically  to Customers showing their positions in shares; arranging for 
bank
wires; responding to customer inquiries relating to the services provided by 
the
Service Organization and handling correspondence;  and acting as shareholder  
of
record  and nominee; and providing reasonable  assistance in connection with 
the
distribution of shares to Customers. Services  provided with respect to Class  
B
shares  will generally be more limited than those provided with respect to 
Class
C shares. Under the terms of the agreements, Service Organizations are  
required
to  provide  to their  Customers a  schedule of  any fees  that they  may 
charge
Customers in connection  with their investments  in Class B  or Class C  
shares.
Class  A shares are  sold to institutions  that have not  entered into 
servicing
agreements with the Fund in connection with their investments. A salesperson 
and
any other  person entitled  to  receive compensation  for selling  or  
servicing
shares  of the Fund may receive  different compensation for selling or 
servicing
one Class of shares over another Class.
    
 
EXPENSES
 
   
    The Fund bears all of its  own expenses. The Fund's expenses include  
taxes,
interest,  fees and salaries  of the Trust's  trustees and officers  who are 
not
directors, officers or employees of  the Fund's service contractors,  
Securities
and  Exchange  Commission fees,  state securities  qualification fees,  costs 
of
preparing and printing prospectuses for regulatory purposes and for 
distribution
to shareholders, advisory  and administration  fees, charges  of the  
custodian,
transfer agent and dividend disbursing agent, Service Organization fees, 
certain
insurance  premiums, outside auditing  and legal expenses,  costs of 
shareholder
reports and shareholder meetings and  any extraordinary expenses. The Fund  
also
pays for brokerage fees and commissions (if any) in connection with the 
purchase
and  sale of  portfolio securities. In  order to maintain  a competitive 
expense
ratio during 1994, LBGAM, and TSSG have agreed voluntarily to reimburse the 
Fund
if and to the extent that the Fund's total operating expenses (other than 
taxes,
interest, brokerage fees and commissions, Rule 12b-1 fees under the 1940 Act 
and
extraordinary expenses) exceed .16% of average daily net assets through 
December
31,  1994.  The  investment  adviser   and  administrator  intend  to   
continue
voluntarily  to  reimburse  the Fund  to  the  extent necessary  to  maintain 
an
annualized expense ratio at a  level no greater than  .18% of average daily  
net
assets  thereafter.  This voluntary  reimbursement  will not  be  changed 
unless
shareholders are provided at least 60  days' advance notice. In addition,  
these
service  providers have agreed to  reimburse the Fund to  the extent required 
by
applicable state law for certain expenses that are described in the Statement 
of
Additional Information  relating  to  the  Fund. Any  fees  charged  by  
Service
Organizations  or other institutional investors to their customers in 
connection
with investments in Fund shares are not reflected in the Fund's expenses.
    
 
                                       8
<PAGE>
                                   DIVIDENDS
 
   
    Shareholders of the Fund are entitled to dividends and distributions 
arising
only from the net  investment income and  capital gains, if  any, earned on  
its
investments held by the Fund. The Fund's net investment income is declared 
daily
as  a dividend to shares held  of record at the close  of business on the day 
of
declaration. Shares begin accruing dividends on  the day the purchase order  
for
the  shares is effected and continue to  accrue dividends through the day 
before
such shares are  redeemed. Dividends are  paid monthly by  wire transfer  
within
five business days after the end of the month or within five business days 
after
a  redemption of all of  a shareholder's shares of  a particular class. The 
Fund
does not expect to realize net long-term capital gains.
    
 
   
    Dividends are determined in the same manner and are paid in the same  
amount
for  each share of the Fund except that Class  B and Class C shares bear all 
the
expense of fees paid to Service Organizations.  As a result, at any given  
time,
the net yield on Class B and Class C shares will be .25% and .35%, 
respectively,
lower than the net yield on Class A shares.
    
 
   
    Institutional  shareholders may elect to  have their dividends reinvested 
in
additional full and fractional shares of the  same class at the net asset  
value
of  such shares on the  payment date. Reinvested dividends  receive the same 
tax
treatment as dividends paid in cash.  Such election, or any revocation  
thereof,
must  be made in writing to the  Fund's Distributor at 260 Franklin Street, 
15th
Floor, Boston, Massachusetts  02110-9624, and  will become  effective after  
its
receipt by TSSG with respect to dividends paid.
    
 
    TSSG,  as transfer agent, will send  each Fund shareholder or its 
authorized
representative an  annual  statement designating  the  amount, if  any,  of  
any
dividends  and  distributions  made  during  each  year  and  their  federal 
tax
qualification.
 
                                     TAXES
 
   
    The Fund qualified in its last taxable year and intends to qualify each 
year
as a "regulated investment company" under the Internal Revenue Code of 1986,  
as
amended  (the "Code").  A regulated  investment company  is exempt  from 
federal
income tax on amounts distributed to its shareholders.
    
 
   
    Qualification as a regulated investment company under the Code for a 
taxable
year requires, among other things, that the Fund distribute to its  
shareholders
at least 90% of its investment company taxable income for such year. In 
general,
the  Fund's  investment  company  taxable  income  will  be  its  taxable 
income
(including interest) subject to certain adjustments and excluding the excess  
of
any  net long-term  capital gain  for the taxable  year over  the net short-
term
capital  loss,  if  any,  for  such   year.  The  Fund  intends  to   
distribute
substantially  all  of its  investment company  taxable  income each  year. 
Such
distributions will be taxable as ordinary income to the Fund's shareholders  
who
are  not  currently exempt  from federal  income taxes,  whether such  income 
is
received in cash or reinvested in additional shares. It is anticipated that 
none
of the  Fund's  distributions  will  be  eligible  for  the  dividends  
received
deduction  for  corporations.  The Fund  does  not expect  to  realize long-
term
capital gains and  therefore does  not expect  to distribute  any "capital  
gain
dividends" as described in the Code.
    
 
    Dividends  declared in October, November or  December of any year payable 
to
shareholders of record on a specified date in such months will be deemed to 
have
been received by the shareholders  and paid by the Fund  on December 31 of  
such
year  in  the event  such  dividends are  actually  paid during  January  of 
the
following year.
 
    MANY STATES, BY  STATUTE, JUDICIAL DECISION  OR ADMINISTRATIVE ACTION,  
HAVE
TAKEN  THE POSITION THAT DIVIDENDS OF A REGULATED INVESTMENT COMPANY SUCH AS 
THE
FUND THAT ARE ATTRIBUTABLE TO INTEREST  ON OBLIGATIONS OF THE U.S. TREASURY  
AND
CERTAIN  U.S.  GOVERNMENT  AGENCIES  AND  INSTRUMENTALITIES  ARE  THE 
FUNCTIONAL
EQUIVALENT OF INTEREST  FROM SUCH  OBLIGATIONS AND ARE,  THEREFORE, EXEMPT  
FROM
STATE AND LOCAL INCOME TAXES.
 
                                       9
<PAGE>
    THE  FUND WILL PROVIDE INVESTORS ANNUALLY WITH INFORMATION ABOUT THE 
PORTION
OF DIVIDENDS FROM THE FUND DERIVED FROM U.S. TREASURY AND U.S. GOVERNMENT 
AGENCY
OBLIGATIONS. INVESTORS SHOULD  BE AWARE OF  THE APPLICATION OF  THEIR STATE  
AND
LOCAL TAX LAWS TO INVESTMENTS IN THE FUND.
 
    The  foregoing is only a brief summary  of some of the important federal 
tax
considerations generally affecting the Fund  and its shareholders. As  
indicated
above,  IRAs receive  special tax  treatment. No  attempt is  made to  present 
a
detailed explanation of the federal, state or local income tax treatment of  
the
Fund or its shareholders and this discussion is not intended as a substitute 
for
careful  tax  planning.  Accordingly,  potential investors  in  the  Fund 
should
consult their tax advisors with specific reference to their own tax situation.
 
                    DESCRIPTION OF SHARES AND MISCELLANEOUS
 
    The Trust  is a  Massachusetts business  trust established  on November  
25,
1992.
 
   
    The  Trust's Declaration of Trust authorizes  the Board of Trustees to 
issue
an unlimited number of full and fractional shares of beneficial interest in  
the
Trust  and  to classify  or  reclassify any  unissued  shares into  one  or 
more
additional classes of  shares. The  Trust is an  open-end management  
investment
company, which offers twelve portfolios: Prime Money Market Fund (Class A, 
Class
B  and Class C),  Prime Value Money Market  Fund (Class A, Class  B, Class C 
and
Class D), Government Obligations  Money Market Fund (Class  A, Class B, Class  
C
and  Class D), 100% Government  Obligations Money Market Fund  (Class A, Class 
B
and Class C), Treasury Instruments  Money Market Fund II  (Class A, Class B  
and
Class  C), 100%  Treasury Instruments  Money Market Fund  (Class A,  Class B 
and
Class C), Tax-Free Money Market Fund (Class  A, Class B and Class C),  
Municipal
Money  Market Fund (Class A, Class B, Class C and Class D), California 
Municipal
Money Market Fund  (Class A,  Class B  and Class  C), New  York Municipal  
Money
Market  Fund (Class A, Class B and  Class C), Floating Rate U.S. Government 
Fund
(Class A and Class B) and Short Duration U.S. Government Fund (Class A and 
Class
B). Shares of the New York Municipal Money Market Fund are not currently sold 
to
the public. The Declaration of Trust further authorizes the trustees to 
classify
or reclassify any class of shares into one or more sub-classes.
    
 
    THIS PROSPECTUS  AND THE  STATEMENT OF  ADDITIONAL INFORMATION  
INCORPORATED
HEREIN  RELATE PRIMARILY TO THE FUND  AND DESCRIBE ONLY THE INVESTMENT 
OBJECTIVE
AND POLICIES,  OPERATIONS, CONTRACTS  AND OTHER  MATTERS RELATING  TO THE  
FUND.
INVESTORS  WISHING  TO OBTAIN  SIMILAR INFORMATION  REGARDING THE  TRUST'S 
OTHER
PORTFOLIOS MAY OBTAIN SEPARATE PROSPECTUSES DESCRIBING THEM BY CONTACTING 
LEHMAN
BROTHERS AT 800-368-5556.
 
    The Trust does not presently intend to hold annual meetings of  
shareholders
except  as required by the 1940 Act or other applicable law. The Trust will 
call
a meeting of shareholders for the purpose of voting upon the question of 
removal
of a member of the Board of Trustees upon written request of shareholders 
owning
at least 10% of the outstanding shares of the Trust entitled to vote.
 
    Each Fund share  represents an  equal proportionate interest  in the  
assets
belonging  to the  Fund. Each  share, which  has a  par value  of $.001,  has 
no
preemptive or conversion rights.  When issued for payment  as described in  
this
Prospectus, shares will be fully paid and nonassessable.
 
    Holders  of the Fund's shares will vote in the aggregate and not by class 
on
all matters, except where otherwise required by law and except that only Class 
B
or Class C  shares, as  the case may  be, will  be entitled to  vote on  
matters
submitted  to a vote of shareholders  pertaining to the Fund's arrangements 
with
Service
 
                                       10
<PAGE>
Organizations with respect to the  relevant Class. Further, shareholders of  
all
of the Trust's portfolios will vote in the aggregate and not by portfolio 
except
as  otherwise required by law or when  the Board of Trustees determines that 
the
matter to be  voted upon affects  only the  interests of the  shareholders of  
a
particular  portfolio.  (See  the  Statement  of  Additional  Information  
under
"Miscellaneous" for examples where the  1940 Act requires voting by  
portfolio.)
Shareholders  of the  Trust are entitled  to one  vote for each  full share 
held
(irrespective of class or portfolio) and fractional votes for fractional  
shares
held.  Voting rights are  not cumulative; and, accordingly,  the holders of 
more
than 50% of the aggregate shares of the Trust may elect all of the trustees.
 
   
    For information  concerning  the  redemption of  Fund  shares  and  
possible
restrictions on their transferability, see "Purchase and Redemption of 
Shares."
    
 
                                     YIELDS
 
   
    From  time to time the "yields" and  "effective yields" for Class A, Class 
B
and Class C shares may be quoted  in advertisements or in reports to  
investors.
Yield  figures are based on historical earnings and are not intended to 
indicate
future performance. The "yield" quoted in advertisements for a particular  
class
or  sub-class of shares refers to the  income generated by an investment in 
such
shares over a specified  period (such as a  seven-day period) identified in  
the
advertisement.  This income is then "annualized."  That is, the amount of 
income
generated by the investment during that  period is assumed to be generated  
each
week  over a  52-week period  or one-year and  is shown  as a  percentage of 
the
investment. The "effective yield" is calculated similarly but, when  
annualized,
the income earned by an investment in a particular class or sub-class is 
assumed
to be reinvested. The "effective yield" will be slightly higher than the 
"yield"
because of the compounding effect of this assumed reinvestment. Yield 
quotations
are computed separately for each Class of shares.
    
 
    The  Fund's  yields may  be compared  to  those of  other mutual  funds 
with
similar objectives, to stock or other relevant indices, or to rankings  
prepared
by independent services or other financial or industry publications that 
monitor
the performance of mutual funds. For example, such data are reported in 
national
financial  publications such  as IBC/DONOGHUE'S  MONEY FUND  REPORT-R-, THE 
WALL
STREET JOURNAL and  THE NEW YORK  TIMES, reports prepared  by Lipper  
Analytical
Service, Inc. and publications of a local or regional nature.
 
   
    THE  FUND'S YIELD FIGURES FOR A  CLASS OF SHARES REPRESENT PAST 
PERFORMANCE,
WILL FLUCTUATE AND SHOULD NOT BE CONSIDERED AS REPRESENTATIVE OF FUTURE 
RESULTS.
The yield of  any investment is  generally a function  of portfolio quality  
and
maturity, type of investment and operating expenses. Since holders of Class B 
or
Class  C  shares  bear  the  service  fees  for  services  provided  by  
Service
Organizations, the net yield on such shares can be expected at any given time 
to
be lower than  the net  yield on  Class A shares.  Any fees  charged by  
Service
Organizations  or other institutional  investors directly to  their customers 
in
connection with  investments in  Fund shares  are not  reflected in  the  
Fund's
expenses  or yields. The methods used to compute the Fund's yields are 
described
in more detail in  the Statement of Additional  Information. Investors may  
call
800-238-2560 (Class A shares code: 005; Class B shares code: 105; Class C 
shares
code: 205) to obtain current yield information.
    
 
                                       11
<PAGE>
   
                LEHMAN BROTHERS INSTITUTIONAL FUNDS GROUP TRUST
                            Prime Money Market Fund
                         Prime Value Money Market Fund
                    Government Obligations Money Market Fund
                 100% Government Obligations Money Market Fund
                     Treasury Instruments Money Market Fund
                   Treasury Instruments Money Market Fund II
                  100% Treasury Instruments Money Market Fund
                          Municipal Money Market Fund
                           Tax-Free Money Market Fund
                     California Municipal Money Market Fund
                      New York Municipal Money Market Fund
    
 
                             ---------------------
 
   
                       Floating Rate U.S. Government Fund
                      Short Duration U.S. Government Fund
    
 
                             ---------------------
 
   
NO  PERSON  HAS  BEEN  AUTHORIZED  TO  GIVE  ANY  INFORMATION  OR  TO  MAKE  
ANY
REPRESENTATIONS NOT CONTAINED IN THIS PROSPECTUS, OR IN THE FUND'S STATEMENT  
OF
ADDITIONAL  INFORMATION INCORPORATED HEREIN BY REFERENCE, IN CONNECTION WITH 
THE
OFFERING MADE BY  THIS PROSPECTUS  AND, IF GIVEN  OR MADE,  SUCH INFORMATION  
OR
REPRESENTATIONS  MUST NOT BE RELIED UPON AS  HAVING BEEN AUTHORIZED BY THE 
TRUST
OR THE DISTRIBUTOR. THIS PROSPECTUS DOES NOT CONSTITUTE AN OFFERING BY THE 
TRUST
OR BY  THE  DISTRIBUTOR IN  ANY  JURISDICTION IN  WHICH  SUCH OFFERING  MAY  
NOT
LAWFULLY BE MADE.
    
 
                              -------------------
 
                               TABLE OF CONTENTS
 
   
<TABLE>
<CAPTION>
                                                PAGE
                                              ---------
<S>                                           <C>
Background and Expense Information..........          2
Investment Objective and Policies...........          3
Purchase and Redemption of Shares...........          5
Management of the Fund......................          7
Dividends...................................          9
Taxes.......................................          9
Description of Shares and
  Miscellaneous.............................         10
Yields......................................         11
</TABLE>
    
 
                              TREASURY INSTRUMENTS
                               MONEY MARKET FUND
 
                                 -------------
 
                                   PROSPECTUS
   
                                  May __, 1994
    
 
                             ---------------------
 
                                LEHMAN BROTHERS


<PAGE>
PROSPECTUS
 
                   TREASURY INSTRUMENTS MONEY MARKET FUND II
 
                       An Investment Portfolio Offered By
                Lehman Brothers Institutional Funds Group Trust
 
   
    Lehman  Brothers Institutional Funds Group Trust (the "Trust") is a no-
load,
open-end management investment company. The shares described in this  
Prospectus
represent  interests in the Treasury Instruments  Money Market Fund II 
portfolio
(the "Fund"), one of a family of money market portfolios of the Trust.
    
 
   
    The Fund's INVESTMENT OBJECTIVE is to provide current income with  
liquidity
and  security of principal. The  Fund invests in a  portfolio consisting of 
U.S.
Treasury bills, notes and direct obligations of the U.S. Treasury and 
repurchase
agreements relating to direct Treasury obligations.
    
 
    Fund shares may not be purchased by individuals directly, but  
institutional
investors  may purchase shares for accounts  maintained by individuals. The 
Fund
currently offers  three  classes of  shares.  In  addition to  Class  A  
shares,
institutional  investors may  purchase on behalf  of their customers  Class B 
or
Class C shares which accrue daily dividends in the same manner as Class A 
shares
but bear all  fees payable by  the Fund to  institutional investors for  
certain
services  they provide to the beneficial  owners of such shares. See 
"Management
of the Fund--Service Organizations."
 
   
    AN INVESTMENT IN  THE FUND  IS NEITHER INSURED  NOR GUARANTEED  BY THE  
U.S.
GOVERNMENT. THERE CAN BE NO ASSURANCE THAT THE FUND WILL BE ABLE TO MAINTAIN 
ITS
NET ASSET VALUE OF $1.00 PER SHARE.
    
 
   
    LEHMAN  BROTHERS, INC.  ("Lehman Brothers")  sponsors the  Fund and  acts 
as
Distributor of its shares. LEHMAN  BROTHERS GLOBAL ASSET MANAGEMENT INC.  
serves
as the Fund's Investment Adviser.
    
 
   
    The  address of the Fund is One Exchange Place, Boston, Massachusetts 
02109.
The Fund can be  contacted as follows: for  PURCHASE AND REDEMPTION ORDERS  
ONLY
CALL  1-800-851-3134; for yield information  call 1-800-238-2560 (Class A 
shares
code: 006;  Class B  shares code:  106; Class  C shares  code: 206);  for  
other
information call 1-800-368-5556.
    
 
   
    This  Prospectus briefly sets forth certain  information about the Fund 
that
investors should  know before  investing.  Investors are  advised to  read  
this
Prospectus  and retain it for future reference. Additional information about 
the
Fund, contained in a Statement of Additional Information dated May __, 1994,  
as
amended  or supplemented from time  to time, has been  filed with the 
Securities
and Exchange Commission and is available to investors without charge by  
calling
the   Fund's  Distributor   at  1-800-368-5556.  The   Statement  of  
Additional
Information is incorporated in its entirety by reference into this Prospectus.
    
 
   
    SHARES OF THE  FUND ARE  NOT DEPOSITS OR  OBLIGATIONS OF,  OR GUARANTEED  
OR
ENDORSED  BY, ANY BANK, AND SUCH SHARES ARE NOT FEDERALLY INSURED BY THE 
FEDERAL
DEPOSIT INSURANCE CORPORATION, THE FEDERAL RESERVE BOARD OR ANY OTHER 
GOVERNMENT
AGENCY. SHARES  OF THE  FUND  INVOLVE CERTAIN  INVESTMENT RISKS,  INCLDUING  
THE
POSSIBLE LOSS OF PRINCIPAL.
    
                           --------------------------
 
THESE  SECURITIES HAVE  NOT BEEN APPROVED  OR DISAPPROVED BY  THE SECURITIES 
AND
  EXCHANGE  COMMISSION  OR  ANY  STATE  SECURITIES  COMMISSION  NOR  HAS   THE
    SECURITIES  AND EXCHANGE  COMMISSION OR ANY  STATE SECURITIES COMMISSION
      PASSED UPON  THE  ACCURACY  OR  ADEQUACY  OF  THIS  PROSPECTUS.  ANY
                REPRESENTATION TO THE CONTRARY IS A CRIMINAL OFFENSE.
                           --------------------------
                                LEHMAN BROTHERS
 
   
May   , 1994
    
<PAGE>
                       BACKGROUND AND EXPENSE INFORMATION
 
   
    The  following Expense Summary lists the costs and expenses that an 
investor
in the Fund can  expect to incur  during the Fund's  current fiscal year  
ending
January  31, 1995. The Fund  offers three separate classes  of shares. Shares 
of
each class represent  equal, PRO  RATA interests in  the Fund  and accrue  
daily
dividends  in the same manner  except that Class B and  Class C shares bear 
fees
payable by the Fund (at  the rate of .25% and  .35% per annum, respectively)  
to
institutions  for services they provide to the beneficial owners of such 
shares.
See "Management of the Fund--Service Organizations."
    
 
   
EXPENSE SUMMARY
    
 
   
<TABLE>
<CAPTION>
                                                                        CLASS 
A   CLASS B   CLASS C
                                                                        SHARES    
SHARES    SHARES
                                                                        ------
-   -------   -------
<S>                                                                     <C>       
<C>       <C>
ANNUAL FUND OPERATING EXPENSES
 (as a percentage of average net assets)
    Advisory Fees.....................................................      %*        
%*        %*
    Rule 12b-1 fees...................................................  none       
.25%      .35%
    Other Expenses--including Administration Fees
     (net of applicable fee waivers)..................................      %*        
%*        %*
                                                                        --        
--        --
    Total Fund Operating Expenses (after expense reimbursement).......   .16%      
.41%      .51%
                                                                        --        
--        --
                                                                        --        
--        --
<FN>
---------
* The Expense Summary above has been restated to reflect the Fund's Investment
  Adviser's and Administrator's Voluntary reimbursement arrangements in effect
  for the Fund's fiscal year ending January 31, 1995. With respect to Class A,
  Class B and Class C shares for the month of January, 1995, the Total Fund
  Operating Expenses including reimbursement of expenses are anticipated to be
  .18%, .43%, and .53%, respectively.
</TABLE>
    
 
   
    In order to  maintain a competitive  expense ratio during  1994, the  
Fund's
Investment  Adviser and Administrator  have voluntarily agreed  to reimburse 
the
Fund if  and to  the extent  that total  operating expenses  (other than  
taxes,
interest,  brokerage  fees and  commissions, Rule  12b-1 fees  and 
extraordinary
expenses) exceed .16% of average daily net assets through December 31, 1994. 
For
the years 1995-1997, the Investment Adviser and Administrator intend to 
continue
voluntarily to  reimburse  the Fund  to  the  extent necessary  to  maintain  
an
annualized  expense ratio at a  level no greater than  .18% of average daily 
net
assets. The voluntary  reimbursement arrangements  described above  will not  
be
changed  unless shareholders are provided at  least 60 days' advance notice. 
The
maximum  annual  contractual  fees  payable   to  the  Investment  Adviser   
and
Administrator  total .20% of  average daily net  assets. Absent reimbursement 
of
expenses, the Total  Fund Operating Expenses  of Class  A, Class B  and Class  
C
would  be .28%,  .53% and  .63%, respectively, of  the Fund's  average daily 
net
assets.
    
 
   
EXAMPLE: An investor would pay the  following expenses on a $1,000,  
investment,
assuming  (1) a  5% annual  return and (2)  redemption at  the end  of each 
time
period with respect to the following shares:
    
 
   
<TABLE>
<CAPTION>
                    1 YEAR  3 YEARS  5 YEARS  10 YEARS
                    ------- -------- -------- --------
<S>                 <C>     <C>      <C>      <C>
Class A shares:.....    $2     $ 5      $ 9      $20
Class B shares:.....    $4     $13      $23      $52
Class C shares:.....    $5     $16      $29      $64
</TABLE>
    
 
                                       2
<PAGE>
   
THE FOREGOING SHOULD NOT BE CONSIDERED  A REPRESENTATION OF ACTUAL EXPENSES  
AND
RATES OF RETURN, WHICH MAY BE GREATER OR LESSER THAN THOSE SHOWN.
    
 
    The purpose of the foregoing table is to assist an investor in 
understanding
the  various costs and expenses that an  investor in the Fund will bear 
directly
or indirectly. Certain Service Organizations (as defined below) also may  
charge
their clients fees in connection with investments in Fund shares, which fees 
are
not  reflected in the table. For more complete descriptions of the various 
costs
and expenses, see "Management of the Fund" in this Prospectus and the  
Statement
of Additional Information.
 
   
                              FINANCIAL HIGHLIGHTS
    
 
   
    The  following financial  highlights for the  fiscal year  ended January 
31,
1994 is derived from the Fund's  Financial Statements audited by Ernst &  
Young,
independent accountants. This information should be read in conjunction with 
the
financial  statements  and  notes  thereto  that  appear  in  the  Statement  
of
Additional Information.
    
 
   
                   TREASURY INSTRUMENTS MONEY MARKET FUND II
    
 
   
<TABLE>
<CAPTION>
                                              PERIOD ENDED   PERIOD ENDED
                                             1/31/94* CLASS 1/31/94* CLASS
                                                   A              B
                                             -------------- --------------
<S>                                          <C>            <C>
Net asset value, beginning of period.........        $1.00         $1.00
Net investment income (1)....................       0.0300        0.0198
Dividends from net investment income.........      (0.0300)      (0.0198)
Net asset value, end of period...............        $1.00         $1.00
Total return (2).............................         3.04%         2.00%
Ratios to average net assets/supplemental
 data:
Net assets, end of period (in 000's).........     $156,782      $ 33,862
Ratio of net investment income to average net
 assets (3)..................................         3.12%         2.87%
Ratio of operating expenses to average net
 assets (3)(4)...............................         0.03%         0.28%
<FN>
---------
*     The Treasury Instruments Money Market Fund  II Class A and Class B  
Shares
      commenced operations on February 8, 1993 and May 24, 1993, respectively.
(1)   Net  investment income  before waiver of  fees by  the Investment 
Adviser,
      Administrator, Custodian and Transfer Agent and expenses reimbursed by 
the
      Investment Adviser and Administrator for Class A and Class B were  
$0.0256
      and $0.0166, respectively.
(2)   Total return represents aggregate total return for the period indicated.
(3)   Annualized.
(4)   Annualized  expense ratio before waiver of fees by the Investment 
Adviser,
      Administrator, Custodian and Transfer Agent and expenses reimbursed by 
the
      Investment Adviser and Administrator  for Class A and  Class B were  
0.49%
      and 0.74%, respectively.
</TABLE>
    
 
                                       3
<PAGE>
                       INVESTMENT OBJECTIVE AND POLICIES
 
   
    The  Fund's investment objective is to provide current income with 
liquidity
and security of principal. The Fund, which operates as a diversified  
investment
company,  invests solely  in direct  obligations of  the U.S.  Treasury, such 
as
Treasury bills and notes and  repurchase agreements relating to direct  
Treasury
obligations.
    
 
   
    PRICE  AND PORTFOLIO MATURITY.  The Fund invests only in securities that 
are
purchased with  and payable  in U.S.  dollars  and that  have (or,  pursuant  
to
regulations  adopted by  the Securities and  Exchange Commission,  are deemed 
to
have) remaining maturities of 13 months or  less at the date of purchase by  
the
Fund. The Fund maintains a dollar-weighted average portfolio maturity of 90 
days
or  less. The Fund follows these policies to maintain a constant net asset 
value
of $1.00 per  share, although  there is  no assurance  that it  can do  so on  
a
continuing basis.
    
 
   
    Securities  issued or  guaranteed by  the U.S.  government have 
historically
involved little risk of loss of principal  if held to maturity. However, due  
to
fluctuations  in interest  rates, the market  value of such  securities may 
vary
during the  period an  investor  owns shares  of  the Fund.  Certain  
government
securities  held by  the Fund may  have remaining  maturities exceeding 
thirteen
months if such securities  provide for adjustments in  their interest rates  
not
less frequently than every thirteen months.
    
 
   
    PORTFOLIO  QUALITY AND  DIVERSIFICATION.   The Fund  may purchase 
government
securities from  financial  institutions,  such  as  banks  and  broker-
dealers,
subject  to the seller's agreement to repurchase them at an agreed upon time 
and
price ("repurchase agreements"). The Fund will  not invest more than 10% of  
the
value  of  its net  assets in  repurchase  agreements which  do not  provide 
for
settlement within seven days.  The seller under a  repurchase agreement will  
be
required to maintain the value of the securities subject to the agreement at 
not
less  than  the repurchase  price (including  accrued  interest). Default  by 
or
bankruptcy of  the seller  would,  however, expose  the  Fund to  possible  
loss
because  of adverse market action or delay in connection with the disposition 
of
the underlying obligations.
    
 
    The Fund may borrow  funds for temporary purposes  by entering into  
reverse
repurchase  agreements in accordance with  the investment restrictions 
described
below. Pursuant to such agreements, the Fund would sell portfolio securities  
to
financial  institutions and agree to repurchase them  at an agreed upon date 
and
price. The Fund would  consider entering into  reverse repurchase agreements  
to
avoid  otherwise selling securities during unfavorable market conditions to 
meet
redemptions. Reverse  repurchase agreements  involve the  risk that  the  
market
value  of the portfolio securities sold by  the Fund may decline below the 
price
of the securities the Fund is obligated to repurchase.
 
    The Fund  may  purchase securities  on  a "when-issued"  basis.  When-
issued
securities  are securities purchased  for delivery beyond  the normal 
settlement
date at a  stated price  and yield.  The Fund will  generally not  pay for  
such
securities or start earning interest on them until they are received. 
Securities
purchased  on a when-issued  basis are recorded  as an asset  and are subject 
to
changes in value based upon changes in the general level of interest rates.  
The
Fund expects that commitments to purchase when-issued securities will not 
exceed
25%  of the value of its total assets absent unusual market conditions. The 
Fund
does not intend to purchase when-issued securities for speculative purposes  
but
only in furtherance of its investment objective.
 
    The Fund may also lend its portfolio securities to financial institutions 
in
accordance  with the investment restrictions described  below. The Fund may 
lend
portfolio   securities    against    collateral   consisting    of    cash    
or
 
                                       4
<PAGE>
   
securities  which are consistent with the Fund's permitted investments, which 
is
equal at all times to at least 100% of the value of the securities loaned. 
There
is no limitation  on the amount  of securities  that may be  loaned. Such  
loans
would involve risks of delay in receiving additional collateral or in 
recovering
the  securities  loaned or  even loss  of  rights in  the collateral  should 
the
borrower of the securities fail financially. However, loans will be made only 
to
borrowers deemed by  the Fund's Investment  Adviser to be  of good standing  
and
only  when, in the Investment  Adviser's judgment, the income  to be earned 
from
the loans justifies the attendant risks.
    
 
    There can  be  no  assurance  that the  Fund  will  achieve  its  
investment
objective.
 
INVESTMENT LIMITATIONS
 
    The  Fund's  investment  objective  and  policies  described  above  are 
not
fundamental and may be changed by the  Trust's Board of Trustees without a  
vote
of  shareholders. If there is a change in the investment objective, 
shareholders
should consider whether the Fund remains  an appropriate investment in light  
of
their then current financial position and needs. The Fund's borrowing 
limitation
summarized  below may not be changed without the affirmative vote of the 
holders
of majority  of its  outstanding  shares. (A  complete  list of  the  
investment
limitations  that cannot be changed without  a vote of shareholders is 
contained
in the  Statement  of Additional  Information  under "Investment  Objective  
and
Policies.")
 
    The  Fund may not borrow money except  from banks for temporary purposes 
and
then in an amount not exceeding 10% of the value of the Fund's total assets,  
or
mortgage,  pledge or hypothecate  its assets except in  connection with any 
such
borrowing and in  amounts not  in excess  of the  lesser of  the dollar  
amounts
borrowed  or 10% of  the value of  the Fund's total  assets at the  time of 
such
borrowing. Additional investments will not be made when borrowings exceed 5%  
of
the Fund's assets.
 
                       PURCHASE AND REDEMPTION OF SHARES
 
PURCHASE PROCEDURES
 
   
    Shares  of the Fund  are sold at the  net asset value per  share of the 
Fund
next determined  after receipt  of  a purchase  order  by Lehman  Brothers,  
the
Distributor of the Fund's shares. Purchase orders for shares are accepted by 
the
Fund  only on days on which both Lehman Brothers and the Federal Reserve Bank 
of
Boston are open  for business  and must be  transmitted to  Lehman Brothers,  
by
telephone  at  1-800-851-3134. Orders  received before  noon, Eastern  time, 
for
which payment  has  been received  by  Boston  Safe Deposit  and  Trust  
Company
("Boston Safe"), the Fund's Custodian, will be executed at noon. Orders 
received
between noon and 3:00 P.M., Eastern time, will be executed at 3:00 P.M., 
Eastern
time,  if payment  has been  received by Boston  Safe by  3:00 P.M.  and will 
be
executed at 4:00 P.M. if payment has been received by 4:00 P.M. Orders  
received
after  3:00 P.M.,  and orders for  which payment  has not been  received by 
4:00
P.M., Eastern time, will not be accepted and notice thereof will be given to 
the
institution placing  the order.  Payment for  Fund shares  may be  made only  
in
Federal  funds immediately available  to Boston Safe.  (Payment for orders 
which
are not received or  accepted by Lehman Brothers  will be returned after  
prompt
inquiry  to the sending institution.) The Fund  may in its discretion reject 
any
order for shares.
    
 
   
    The minimum aggregate initial investment by an institution in the 
investment
portfolios that comprise  the Trust is  $1 million (with  not less than  
$25,000
invested   in   any   one   investment   portfolio   offered   by   the  
Trust);
    
 
                                       5
<PAGE>
however, broker-dealers  and  other institutional  investors  may set  a  
higher
minimum for their customers. To reach the minimum Trust-wide initial 
investment,
purchases  of shares may be aggregated over a  period of six months. There is 
no
minimum subsequent investment.
 
   
    Conflict of interest restrictions may  apply to an institution's receipt  
of
compensation  paid by  the Fund in  connection with the  investment of 
fiduciary
funds in Class B or  Class C shares. See  also "Management of the  Fund--
Service
Organizations."  Institutions, including  banks regulated by  the Comptroller 
of
the Currency and  investment advisers and  other money managers  subject to  
the
jurisdiction  of the Securities and Exchange Commission, the Department of 
Labor
or state  securities commissions,  are  urged to  consult their  legal  
advisors
before investing fiduciary funds in Class B or Class C shares.
    
 
   
    SUBACCOUNTING  SERVICES.  Institutions are  encouraged to open single 
master
accounts. However, certain  institutions may  wish to use  the Transfer  
Agent's
subaccounting  system to minimize their internal recordkeeping requirements. 
The
Transfer Agent  charges a  fee  based on  the  level of  subaccounting  
services
rendered. Institutions holding Fund shares in a fiduciary, agency, custodial, 
or
similar  capacity may charge or pass through subaccounting fees as part of or 
in
addition to normal trust or agency account  fees. They may also charge fees  
for
other  services provided which may  be related to the  ownership of Fund 
shares.
This prospectus should, therefore, be  read together with any agreement  
between
the  customer and the institution with regard to the services provided, the 
fees
charged for those services, and any restrictions and limitations imposed.
    
 
REDEMPTION PROCEDURES
 
   
    Redemption orders must  be transmitted  to Lehman Brothers  by telephone  
at
1-800-851-3134.  Payment for  redeemed shares  for which  a redemption  order 
is
received by Lehman Brothers before 3:00 P.M.,  Eastern time, on a day that  
both
Lehman  Brothers and the Federal Reserve Bank of Boston are open for business 
is
normally made in federal  funds wired to the  redeeming shareholder on the  
same
business day. Payment for redemption orders which are received between 3:00 
P.M.
and  4:00 P.M.,  Eastern time, is  normally wired  in federal funds  on the 
next
business day following redemption.
    
 
   
    Shares are redeemed at the net  asset value per share next determined  
after
Lehman  Brothers' receipt of the redemption order. While the Fund intends to 
use
its best  efforts to  maintain  its net  asset value  per  share at  $1.00,  
the
proceeds paid to an investor upon redemption may be more or less than the 
amount
invested  depending upon a share's net asset value at the time of redemption. 
To
allow the Fund's Investment  Adviser to manage  the Fund effectively,  
investors
are  strongly urged to initiate all investments or redemptions of Fund shares 
as
early in the day as possible and to  notify Lehman Brothers at least one day  
in
advance of transactions in excess of $5 million.
    
 
   
    The  Fund reserves the  right to wire redemption  proceeds within seven 
days
after receiving  the redemption  order if,  in the  judgment of  the  
Investment
Adviser, an earlier payment could adversely affect the Fund. The Fund shall 
have
the right to redeem involuntarily shares in any account at their net asset 
value
if  the value of the  account is less than $10,000  after 60 days' prior 
written
notice to the investor. Any such redemption  shall be effected at the net  
asset
value per share next determined after the redemption order is entered. If 
during
the  60-day period the investor increases the value of its account to $10,000 
or
more, no such  redemption shall  take place. In  addition, the  Fund may  
redeem
shares   involuntarily  or  suspend   the  right  of   redemption  as  
permitted
    
 
                                       6
<PAGE>
under the Investment Company Act of 1940,  as amended (the "1940 Act") or  
under
certain   special  circumstances  described  in   the  Statement  of  
Additional
Information under "Additional Purchase and Redemption Information."
 
   
VALUATION OF SHARES--NET ASSET VALUE
    
   
    The Fund's net asset  value per share for  purposes of pricing purchase  
and
redemption  orders is  determined by the  Fund's Administrator as  of noon, 
3:00
P.M. and 4:00 P.M., Eastern time, on  each weekday, with the exception of  
those
holidays  on which either Lehman Brothers or  the Federal Reserve Bank of 
Boston
is closed. Currently, one or both of these institutions are closed on  
customary
national business holidays of New Year's Day, Martin Luther King, Jr.'s 
Birthday
(observed),  Presidents' Day (Washington's Birthday), Good Friday, Memorial 
Day,
Independence Day, Labor Day, Columbus Day (observed), Veterans Day, 
Thanksgiving
Day and Christmas Day, and on the preceding Friday or subsequent Monday when 
one
of these holidays  falls on a  Saturday or Sunday,  respectively. The net  
asset
value  per  share  of Fund  shares  is calculated  by  adding the  value  of 
all
securities and other assets  of the Fund,  subtracting liabilities and  
dividing
the  result by the total  number of the Fund's  outstanding shares. In 
computing
net asset  value,  the Fund  uses  the amortized  cost  method of  valuation  
as
described  in the Statement of Additional Information under "Additional 
Purchase
and Redemption Information." The Fund's net  asset value per share for  
purposes
of pricing purchase and redemption orders is determined independently of the 
net
asset value of the shares of the Trust's other investment portfolios.
    
 
   
OTHER MATTERS
    
    Fund  shares are sold and redeemed without charge by the Fund. 
Institutional
investors purchasing  or holding  Fund shares  for their  customer accounts  
may
charge  customers  fees  for  cash management  and  other  services  provided 
in
connection with their accounts. A customer should, therefore, consider the 
terms
of its account with an institution before purchasing Fund shares. An 
institution
purchasing or redeeming  shares on behalf  of its customers  is responsible  
for
transmitting   orders  to  Lehman  Brothers  in  accordance  with  its  
customer
agreements.
 
   
                                   DIVIDENDS
    
 
   
    ** 1  Investors of  the Fund  are entitled  to dividends  and  
distributions
arising only from the net investment income and capital gains, if any, earned 
on
investments held by the Fund. The Fund's net investment income is declared 
daily
as  a dividend to shares held  of record at the close  of business on the day 
of
declaration. Shares begin accruing dividends on  the day the purchase order  
for
the  shares is executed and continue to accrue dividends through, and 
including,
the day before the  redemption order for the  shares is executed. Dividends  
are
paid  monthly by wire  transfer within five  business days after  the end of 
the
month within  five business  days after  the end  of the  month or  within  
five
business  days after a redemption of all of an investor's shares of a 
particular
class. The Fund does not expect to realize net long-term capital gains.
    
 
   
    ** 2 Dividends are determined  in the same manner and  are paid in the  
same
amount  for each Fund share, except that Class B and Class C shares bear all 
the
expense of fees paid to Service Organizations.  As a result, at any given  
time,
the net yield on Class B and Class C shares will be .25% and .35%, 
respectively,
lower than the net yield on Class A shares.
    
 
   
    Institutional  investors  may elect  to have  their dividends  reinvested 
in
additional full and fractional shares of  the same class of shares with  
respect
to  which such  dividends are  declared at  the net  asset value  of such 
shares
    
 
                                       7
<PAGE>
   
on the payment  date. Reinvested  dividends receive  the same  tax treatment  
as
dividends  paid in cash. Such election, or  any revocation thereof, must be 
made
in writing  to the  Fund's  Distributor, at  260  Franklin Street,  15th  
Floor,
Boston,  Massachusetts, 02110-9624, and will  become effective after its 
receipt
by the Distributor with respect to dividends paid.
    
 
   
    TSSG,  as  Transfer  Agent,  will  send  each  investor  or  its  
authorized
representative,  if  any,  an annual  statement  designating the  amount  of 
any
dividends and  capital  gains distributions  made  during each  year  and  
their
federal tax qualification.
    
 
   
                                     TAXES
    
 
   
    The  Fund qualified in its last year  and intends to qualify in future 
years
as a "regulated investment company" under the Internal Revenue Code of 1986,  
as
amended  (the "Code").  A regulated  investment company  is exempt  from 
federal
income tax on amounts distributed to its investors.
    
 
   
    ** 3 Qualification as  a regulated investment company  under the Code for  
a
taxable  year  requires, among  other things,  that the  Fund distribute  to 
its
shareholders at least  90% of  its investment  company taxable  income for  
such
year.  In  general, the  Fund's investment  company taxable  income will  be 
its
taxable income  (including  dividends  and short-term  capital  gains,  if  
any)
subject  to certain  adjustments and excluding  the excess of  any net long-
term
capital gain for the taxable year over the net short-term capital loss, if  
any,
for  such  year.  The  Fund  intends  to  distribute  substantially  all  of 
its
investment company taxable income each year. Such distributions will be  
taxable
as  ordinary income to Fund investors who  are not currently exempt from 
federal
income taxes,  whether  such  income  is  received  in  cash  or  reinvested  
in
additional  shares. It is anticipated that none of the Fund's distributions 
will
be eligible for the dividends received deduction for corporations. The Fund 
does
not expect to realize long-term capital gains and, therefore, does not expect 
to
distribute any "capital gain dividends" as described in the Code.
    
 
   
    ** 4 Dividends declared in October, November or December of any year 
payable
to investors of record on a specified date in such months will be deemed to 
have
been received by the shareholders  and paid by the Fund  on December 31 of  
such
year  in  the event  such  dividends are  actually  paid during  January  of 
the
following year.
    
 
   
    ** 5 Many states,  by statute, judicial  decision or administrative  
action,
have taken the position that dividends of a regulated investment company such 
as
the  Fund that are attributable to interest  on obligations of the U.S. 
Treasury
and certain U.S.  government agencies and  instrumentalities are the  
functional
equivalent  of interest  from such obligations  and are,  therefore, exempt 
from
state and local income taxes.
    
 
   
    ** 6 The  Fund will provide  investors annually with  information about  
the
portion  of  dividends  from  the  Fund  derived  from  U.S.  Treasury  and 
U.S.
government agency obligations. Investors should  be aware of the application  
of
their state and local tax laws to investments in the Fund.
    
 
   
    **  7 The foregoing is only a brief summary of some of the important 
federal
tax considerations generally affecting the Fund and its investors. No attempt 
is
made to present a detailed explanation of the federal, state or local income 
tax
treatment of the Fund or its investors and this discussion is not intended as  
a
substitute  for careful  tax planning.  Accordingly, potential  investors in 
the
Fund should consult their tax advisors with specific reference to their own  
tax
situation.
    
 
                                       8
<PAGE>
                             MANAGEMENT OF THE FUND
 
   
    The  business and affairs of the Fund are managed under the direction of 
the
Trust's Board  of  Trustees. The  Trustees  approve all  significant  
agreements
between  the Trust  and the  persons or companies  that furnish  services to 
the
Fund,  including   agreements   with  its   Distributor,   Investment   
Adviser,
Administrator,  Custodian and Transfer  Agent. The day-to-day  operations of 
the
Fund are  delegated to  the  Fund's Investment  Adviser and  Administrator.  
The
Statement  of  Additional  Information  relating to  the  Fund  contains 
general
background information  regarding  each Trustee  and  executive officer  of  
the
Trust.
    
 
   
DISTRIBUTOR
    
   
    Lehman  Brothers, located at  3 World Financial Center,  New York, New 
York,
10285, is the Distributor of the Fund's shares. Lehman Brothers, a leading  
full
service  investment  firm, meets  the  diverse financial  needs  of 
individuals,
institutions and governments around the world. Lehman Brothers has entered  
into
a   Distribution  Agreement  with  the  Trust  pursuant  to  which  it  has  
the
responsibility for distributing shares of the Fund.
    
 
INVESTMENT ADVISER--LEHMAN BROTHERS GLOBAL ASSET MANAGEMENT INC.
 
   
    Lehman Brothers Global Asset Management  Inc. ("LBGAM"), located at 3  
World
Financial  Center, New  York, New  York 10285,  serves as  the Fund's 
Investment
Adviser. LBGAM is a wholly owned subsidiary of Shearson Lehman Brothers 
Holdings
Inc. ("Holdings"). LBGAM, together with other Lehman Brother investment 
advisory
affiliates, serves as  Investment Adviser  to investment  companies and  
private
accounts  and  has assets  under management  in  excess of  [$15] billion  as 
of
___________, 1994.
    
 
   
    As  Investment  Adviser  to  the  Fund,  LBGAM  will,  among  other  
things,
participate  in  the  formulation  of the  Fund's  investment  policies, 
analyze
economic  trends  affecting  the  Fund  and  monitor  and  evaluate  the  
Fund's
investment objective and policies and the Fund's investment performance. For 
its
services LBGAM will be paid a monthly fee by the Fund at the annual rate of 
.10%
of  the value of the Fund's average daily net assets. For the period February 
8,
1993 (commencement  of  operations)  to  January 31,  1994,  LBGAM  received  
an
advisory fee from the Fund in the amount of .__% of average daily net assets.
    
 
   
ADMINISTRATOR AND TRANSFER AGENT--THE SHAREHOLDER SERVICES GROUP, INC.
    
   
    The  Shareholder  Services Group,  Inc.  ("TSSG"), located  at  One 
Exchange
Place, 53  State  Street, Boston,  Massachusetts  02109, serves  as  the  
Fund's
Administrator  and Transfer  Agent, TSSG is  a wholly owned  subsidiary of 
First
Data Corporation. As Administrator, TSSG calculates  the net asset value of  
the
Fund's  shares and generally assists in all aspects of the Fund's 
administration
and operation. As  compensation for  TSSG's services as  Administrator, TSSG  
is
entitled  to receive from the Fund  a monthly fee at the  annual rate of .10% 
of
the value of  the Fund's  average daily  net assets.  TSSG is  also entitled  
to
receive a fee from the Fund for its services as Transfer Agent. TSSG pays 
Boston
Safe,  the Fund's  Custodian, a  portion of  its monthly  administration fee 
for
custody services rendered to the Fund.
    
 
   
CUSTODIAN--BOSTON SAFE DEPOSIT AND TRUST COMPANY
    
   
    Boston Safe, a wholly owned subsidiary  of The Boston Company Inc.,  
located
at  One  Boston  Place,  Boston,  Massachusetts  02108,  serves  as  the  
Fund's
Custodian.
    
 
                                       9
<PAGE>
SERVICE ORGANIZATIONS
 
   
    Financial institutions, such  as banks,  savings and  loan associations  
and
other such institutions ("Service Organizations") and/or institutional 
customers
of  Service Organizations may purchase  Class B or Class  C shares. These 
shares
are identical in all respects to Class  A shares except that they bear the  
fees
described below and enjoy certain exclusive voting rights on matters relating 
to
these fees. The Fund will enter into an agreement with each Service 
Organization
whose  customers ("Customers") are the  beneficial owners of Class  B or Class 
C
shares that requires  the Service  Organization to provide  certain services  
to
Customers  in consideration of the Fund's payment  of service fees at the 
annual
rate of .25% or .35%, respectively, of the average daily net asset value of  
the
respective  Class  beneficially owned  by  Customers. Such  services,  which 
are
described  more  fully  in  the   Statement  of  Additional  Information   
under
"Management  of the  Funds--Service Organizations," may  include aggregating 
and
processing purchase  and  redemption requests  from  Customers and  placing  
net
purchase  and  redemption  orders  with  Lehman  Brothers;  processing  
dividend
payments  from  the   Fund  on  behalf   of  Customers;  providing   
information
periodically  to Customers showing their positions in shares; arranging for 
bank
wires; responding to Customer inquiries relating to the services provided by 
the
Service Organization  and  handling  correspondence; acting  as  shareholder  
of
record  and nominee; and providing reasonable  assistance in connection with 
the
distribution of shares to Customers. Services  provided with respect to Class  
B
shares  will generally be more limited than those provided with respect to 
Class
C shares. Under the terms of the agreements, Service Organizations are  
required
to provide to their Customers a schedule of any fees that they may charge to 
the
Customers  relating to  the investment  of the Customers'  assets in  Class B 
or
Class C shares. Class A shares are sold to financial institutions that have  
not
entered  into  servicing  agreements  with the  Fund  in  connection  with 
their
investments. A salesperson and any other person entitled to receive 
compensation
for selling or servicing shares of  the Fund may receive different  
compensation
for selling or servicing one Class of shares over another Class.
    
 
EXPENSES
 
   
    The  Fund bears all of its own  expenses. The Fund's expenses include 
taxes,
interest, fees and  salaries of the  Trust's trustees and  officers who are  
not
directors,  officers or employees of  the Fund's service contractors, 
Securities
and Exchange  Commission fees,  state securities  qualification fees,  costs  
of
preparing and printing prospectuses for regulatory purposes and for 
distribution
to  investors,  advisory  and  administration fees,  charges  of  the 
custodian,
transfer agent and dividend disbursing agent, Service Organization fees, 
certain
insurance premiums, outside  auditing and legal  expenses, costs of  
shareholder
reports  and shareholder meetings and any  extraordinary expenses. The Fund 
also
pays for brokerage fees and commissions (if any) in connection with the 
purchase
and sale of  portfolio securities. In  order to maintain  a competitive  
expense
ratio  during 1994, LBGAM and TSSG have agreed voluntarily to reimburse the 
Fund
if and to the extent that the Fund's total operating expenses (other than 
taxes,
interest, brokerage fees and commissions, Rule 12b-1 fees under the 1940 Act 
and
extraordinary expenses) exceed .16% of average daily net assets through 
December
31,  1994.  The  Investment  Adviser   and  Administrator  intend  to   
continue
voluntarily  to  reimburse  the Fund  to  the  extent necessary  to  maintain 
an
annualized expense ratio at a  level no greater than  .18% of average daily  
net
assets  thereafter.  This voluntary  reimbursement  will not  be  changed 
unless
investors are provided  at least  60 days'  advance notice.  In addition,  
these
service  providers have agreed to  reimburse the Fund to  the extent required 
by
applicable state law for certain expenses that are described in the Statement 
of
Additional Information  relating  to  the  Fund. Any  fees  charged  by  
Service
Organizations  or other institutional investors to their customers in 
connection
with investments in Fund shares are not reflected in the Fund's expenses.
    
 
                                       10
<PAGE>
   
                                     YIELDS
    
 
   
    From time to time the "yields" and "effective yields" of its Class A,  
Class
B and Class C shares may be quoted in advertisements or in reports to 
investors.
Yield  quotations are computed separately for  each Class of shares. The 
"yield"
quoted in advertisements for a particular class or sub-class of shares refers 
to
the income  generated by  an investment  in the  shares of  such shares  over  
a
specified  period (such as a seven-day  period) identified in the 
advertisement.
This income is then "annualized"; that is, the amount of income generated by 
the
investment during that week is assumed to be generated each week over a  52-
week
or  one-year  period  and  is  shown as  a  percentage  of  the  investment. 
The
"effective yield"  is  calculated similarly  but,  when annualized,  the  
income
earned  by an  investment in a  particular class  or sub-class is  assumed to 
be
reinvested. The  "effective yield"  will  be slightly  higher than  the  
"yield"
because of the compounding effect of this assumed reinvestment.
    
 
   
    **  8 The Fund's yields may be compared  to those of other mutual funds 
with
similar objectives, to stock or other relevant indices, or to rankings  
prepared
by independent services or other financial or industry publications that 
monitor
the performance of mutual funds. For example, such data are reported in 
national
financial  publications such  as IBC/DONOGHUE'S  MONEY FUND  REPORT-R-, THE 
WALL
STREET JOURNAL and  THE NEW YORK  TIMES, reports prepared  by Lipper  
Analytical
Service, Inc. and publications of a local or regional nature.
    
 
   
    **  9  THE  FUND'S  YIELD  FIGURES FOR  A  CLASS  OF  SHARES  REPRESENT 
PAST
PERFORMANCE, WILL FLUCTUATE AND  SHOULD NOT BE  CONSIDERED AS REPRESENTATIVE  
OF
FUTURE RESULTS. The yield of any investment is generally a function of 
portfolio
quality  and maturity, type of investment  and operating expenses. Since 
holders
of Class B or Class  C shares bear all service  fees for such services, the  
net
yield  on such shares can be expected at any given time to be lower than the 
net
yield on Class  A shares.  Any fees charged  by Service  Organizations or  
other
institutional   investors  directly  to  their   customers  in  connection  
with
investments in Fund shares are not  reflected in the Fund's expenses or  
yields.
The  methods used to compute  the Fund's yields are  described in more detail 
in
the Statement  of  Additional  Information. Investors  may  call  1-800-238-
2560
(Class  A shares code: 006; Class B shares  code: 106; Class C shares code: 
206)
to obtain current yield information.
    
 
   
    The yields for Class  A and Class  B shares for the  Fund for the  seven-
day
period ended January 31, 1994 were __% and __%, respectively.
    
 
   
                             DESCRIPTION OF SHARES
    
 
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    The  Trust is  a Massachusetts  business trust  established on  November 
25,
1992.
    
 
                                       11
<PAGE>
   
    The Trust's Declaration of Trust authorizes  the Board of Trustees to  
issue
an  unlimited number of full and fractional shares of beneficial interest in 
the
Trust and  to  classify or  reclassify  any unissued  shares  into one  or  
more
additional  classes of  shares. The Trust  is an  open-end management 
investment
company, which offers twelve portfolios: Prime Money Market Fund (Class A, 
Class
B and Class C),  Prime Value Money Market  Fund (Class A, Class  B, Class C  
and
Class  D), Government Obligations Money  Market Fund (Class A,  Class B, Class 
C
and Class D), 100%  Government Obligations Money Market  Fund (Class A, Class  
B
and  Class C), Treasury Instruments  Money Market Fund II  (Class A, Class B 
and
Class C), 100%  Treasury Instruments  Money Market Fund  (Class A,  Class B  
and
Class  C), Tax-Free Money Market Fund (Class  A, Class B and Class C), 
Municipal
Money Market Fund (Class A, Class B, Class C and Class D), California  
Municipal
Money  Market Fund  (Class A,  Class B  and Class  C), New  York Municipal 
Money
Market Fund (Class A, Class B and  Class C), Floating Rate U.S. Government  
Fund
(Class A and Class B) and Short Duration U.S. Government Fund (Class A and 
Class
B). Shares of the New York Municipal Money Market Fund are not currently sold 
to
the public. Pursuant to such authority, the Board of Trustees has authorized 
the
issuance of four classes of shares for each of 11 portfolios. The Declaration 
of
Trust  further authorizes  the trustees to  classify or reclassify  any class 
of
shares into one or more sub-classes.
    
 
   
    THIS PROSPECTUS  AND THE  STATEMENT OF  ADDITIONAL INFORMATION  
INCORPORATED
HEREIN  RELATE PRIMARILY TO THE FUND  AND DESCRIBE ONLY THE INVESTMENT 
OBJECTIVE
AND POLICIES,  OPERATIONS, CONTRACTS  AND OTHER  MATTERS RELATING  TO THE  
FUND.
INVESTORS  WISHING  TO OBTAIN  SIMILAR INFORMATION  REGARDING THE  TRUST'S 
OTHER
PORTFOLIOS MAY OBTAIN SEPARATE PROSPECTUSES DESCRIBING THEM BY CONTACTING 
LEHMAN
BROTHERS AT 1-800-368-5556.
    
 
    The Trust does not presently intend to hold annual meetings of  
shareholders
except  as required by the 1940 Act or other applicable law. The Trust will 
call
a meeting of shareholders for the purpose of voting upon the question of 
removal
of a member of the Board of Trustees upon written request of shareholders 
owning
at least 10% of the outstanding shares of the Trust entitled to vote.
 
    Each Fund share  represents an  equal proportionate interest  in the  
assets
belonging  to the  Fund. Each  share, which  has a  par value  of $.001,  has 
no
preemptive or conversion rights.  When issued for payment  as described in  
this
Prospectus, shares will be fully paid and nonassessable.
 
   
    Holders  of the Fund's shares will vote in the aggregate and not by class 
on
all matters, except where otherwise required by law and except that only Class 
B
or Class C  shares, as  the case may  be, will  be entitled to  vote on  
matters
submitted  to a vote of shareholders  pertaining to the Fund's arrangements 
with
Service Organizations with respect to the relevant Class. Further,  
shareholders
of  the Fund and of the Trust's portfolios will vote in the aggregate and not 
by
portfolio except as  otherwise required  by law or  when the  Board of  
Trustees
determines  that the matter to  be voted upon affects  only the interests of 
the
shareholders of  a  particular  portfolio.  (See  the  Statement  of  
Additional
Information  under "Additional Description Concerning  Fund Shares" for 
examples
where the 1940 Act requires voting by portfolio.) Shareholders of the Trust  
are
entitled  to  one  vote for  each  full  share held  (irrespective  of  class 
or
portfolio) and fractional votes  for fractional shares  held. Voting rights  
are
not  cumulative; and, accordingly, the holders of more than 50% of the 
aggregate
shares of the Trust may elect all of the trustees.
    
 
                                       12
<PAGE>
   
    For information  concerning  the  redemption of  Fund  shares  and  
possible
restrictions on their transferability, see "Purchase and Redemption of 
Shares."
    
 
    * 8 moved from here; text not shown
 
    * 9 moved from here; text not shown
 
                                       13
<PAGE>
                LEHMAN BROTHERS INSTITUTIONAL FUNDS GROUP TRUST
 
   
                            Prime Money Market Fund
                         Prime Value Money Market Fund
                    Government Obligations Money Market Fund
                 100% Government Obligations Money Market Fund
                   Treasury Instruments Money Market Fund II
                  100% Treasury Instruments Money Market Fund
                          Municipal Money Market Fund
                           Tax-Free Money Market Fund
                     California Municipal Money Market Fund
                      New York Municipal Money Market Fund
    
 
                            ------------------------
 
   
                       Floating Rate U.S. Government Fund
                      Short Duration U.S. Government Fund
    
                            ------------------------
 
   
NO  PERSON  HAS  BEEN  AUTHORIZED  TO  GIVE  ANY  INFORMATION  OR  TO  MAKE  
ANY
REPRESENTATIONS NOT CON-TAINED IN THIS PROSPECTUS, OR IN THE FUND'S STATEMENT 
OF
ADDITIONAL INFORMATION INCORPORATED HEREIN BY REFERENCE, IN CONNECTION WITH  
THE
OFFERING  MADE BY  THIS PROSPECTUS  AND, IF GIVEN  OR MADE,  SUCH INFORMATION 
OR
REPRESENTATIONS MUST NOT BE RELIED UPON  AS HAVING BEEN AUTHORIZED BY THE  
TRUST
OR ITS DISTRIBUTOR. THIS PROSPECTUS DOES NOT CONSTITUTE AN OFFERING BY THE 
TRUST
OR  BY  THE DISTRIBUTOR  IN  ANY JURISDICTION  IN  WHICH SUCH  OFFERING  MAY 
NOT
LAWFULLY BE MADE.
    
                             ---------------------
                               TABLE OF CONTENTS
 
   
<TABLE>
<CAPTION>
                                                 PAGE
                                              -----------
<S>                                           <C>
Background and Expense Information..........           2
Financial Highlights........................           3
Investment Objective and Policies...........           4
Purchase and Redemption of Shares...........           5
Dividends...................................           7
Taxes.......................................           8
Management of the Fund......................           9
Yields......................................          11
Description of Shares.......................          11
</TABLE>
    
 
                              TREASURY INSTRUMENTS
                              MONEY MARKET FUND II
 
                              -------------------
 
   
                                   PROSPECTUS
                                  May __, 1994
    
 
                             ---------------------
 
                                LEHMAN BROTHERS
 
   
THIS PROSPECTUS AND THE STATEMENT OF ADDITIONAL INFORMATION INCORPORATED 
HEREIN
  RELATE PRIMARILY TO THE FUND AND DESCRIBE ONLY THE INVESTMENT OBJECTIVE AND
    POLICIES, OPERATIONS, CONTRACTS AND OTHER MATTERS RELATING TO THE FUND.
  INVESTORS WISHING TO OBTAIN SIMILAR INFORMATION REGARDING THE TRUST'S OTHER
PORTFOLIOS MAY OBTAIN SEPARATE PROSPECTUSES DESCRIBING THEM BY CONTACTING 
LEHMAN
                          BROTHERS AT 1-800-368-5556.
    


<PAGE>
+
PROSPECTUS
 
                         PRIME VALUE MONEY MARKET FUND
 
                       An Investment Portfolio Offered By
                Lehman Brothers Institutional Funds Group Trust
 
   
    Lehman  Brothers Institutional Funds Group Trust (the "Trust") is a no-
load,
open-end, management investment company. The shares described in this 
Prospectus
represent interests in the Prime Value Money Market Fund portfolio (the 
"Fund"),
one of a family of money market portfolios of the Trust.
    
   
    The Fund's INVESTMENT OBJECTIVE is  to provide current income and  
stability
of  principal. The Fund  invests in a  portfolio consisting of  a broad range 
of
short-term instruments, including U.S. government  and U.S. bank and  
commercial
obligations and repurchase agreements relating to such obligations. Under 
normal
market  conditions, at least 25% of the  Fund's total assets will be invested 
in
obligations of  issuers  in  the  banking  industry  and  repurchase  
agreements
relating to such obligations.
    
 
   
    Fund  shares may not be purchased by individuals directly, but 
institutional
investors may purchase shares for  accounts maintained by individuals. The  
Fund
currently  offers  three  classes of  shares.  In  addition to  Class  A 
shares,
institutional investors may  purchase on behalf  of their customers  Class B  
or
Class C shares which accrue daily dividends in the same manner as Class A 
shares
but  bear all fees  payable by the  Fund to institutional  investors for 
certain
services they provide to the beneficial  owners of such shares. See  
"Management
of the Fund--Service Organizations."
    
   
    AN  INVESTMENT IN  THE FUND  IS NEITHER INSURED  NOR GUARANTEED  BY THE 
U.S.
GOVERNMENT. THERE CAN BE NO ASSURANCE THAT THE FUND WILL BE ABLE TO MAINTAIN 
ITS
NET ASSET VALUE OF $1.00 PER SHARE.
    
   
    LEHMAN BROTHERS,  INC. ("LEHMAN  BROTHERS") sponsors  the Fund  and acts  
as
Distributor  of its shares. LEHMAN BROTHERS  GLOBAL ASSET MANAGEMENT INC. 
serves
as the Fund's Investment Adviser.
    
 
   
    The address of the Fund is One Exchange Place, Boston, Massachusetts  
02109.
The  Fund can be contacted  as follows: for purchase  and redemption orders 
only
call 1-800-851-3134; for yield information  call 1-800-238-2560 (Class A  
shares
code:  001;  Class B  shares  code: 101;  Class C  shares  code: 201;  for 
other
information call 1-800-368-5556.
    
   
    This Prospectus briefly sets forth  certain information about the Fund  
that
investors  should  know before  investing. Investors  are  advised to  read 
this
Prospectus and retain it for future reference. Additional information about  
the
Fund,  contained in a Statement of Additional Information dated May __, 1994, 
as
amended or supplemented from  time to time, has  been filed with the  
Securities
and  Exchange Commission and is available to investors without charge by 
calling
the  Fund's  Distributor   at  1-800-368-5556.  The   Statement  of   
Additional
Information is incorporated in its entirety by reference into this Prospectus.
    
 
   
    SHARES  OF THE  FUND ARE  NOT DEPOSITS OR  OBLIGATIONS OF,  OR GUARANTEED 
OR
ENDORSED BY, ANY BANK, AND SUCH SHARES ARE NOT FEDERALLY INSURED BY THE  
FEDERAL
DEPOSIT INSURANCE CORPORATION, THE FEDERAL RESERVE BOARD OR ANY OTHER 
GOVERNMENT
AGENCY.  SHARES  OF THE  FUND INVOLVE  CERTAIN  INVESTMENT RISKS,  INCLUDING 
THE
POSSIBLE LOSS OF PRINCIPAL.
    
                           --------------------------
THESE SECURITIES HAVE  NOT BEEN APPROVED  OR DISAPPROVED BY  THE SECURITIES  
AND
  EXCHANGE   COMMISSION  OR  ANY  STATE  SECURITIES  COMMISSION  NOR  HAS  THE
    SECURITIES AND EXCHANGE  COMMISSION OR ANY  STATE SECURITIES  COMMISSION
      PASSED  UPON  THE  ACCURACY  OR  ADEQUACY  OF  THIS  PROSPECTUS. ANY
                REPRESENTATION TO THE CONTRARY IS A CRIMINAL OFFENSE.
                           --------------------------
 
                                LEHMAN BROTHERS
 
------------------------
+ FOR EDGAR FILING,  LANGUAGE THAT  WILL BE  ADDED IS  PRECEDED BY  A "/*/"  
AND
  FOLLOWED  BY A "/**/". LANGUAGE THAT WILL BE ELIMINATED IS PRECEDED BY A 
"/#/"
  AND FOLLOWED BY A "/##/".
   
May __, 1994
    
<PAGE>
                       BACKGROUND AND EXPENSE INFORMATION
 
   
    The  following Expense Summary lists the costs and expenses that an 
investor
in the Fund can  expect to incur  during the Fund's  current fiscal year  
ending
January  31, 1995. The Fund  offers three separate classes  of shares. Shares 
of
each class represent  equal, pro  rata interests in  the Fund  and accrue  
daily
dividends  in the same manner  except that Class B and  Class C shares bear 
fees
payable by the Fund (at  the rate of .25% and  .35% per annum, respectively)  
to
institutions  for services they provide to the beneficial owners of such 
shares.
See "Management of the Fund--Service Organizations."
    
 
   
EXPENSE SUMMARY
    
 
   
<TABLE>
<CAPTION>
                                        CLASS A CLASS B CLASS C
                                        SHARES  SHARES  SHARES
                                        ------- ------- -------
<S>                                     <C>     <C>     <C>
ANNUAL FUND OPERATING EXPENSES
 (as a percentage of average net assets)
    Advisory Fees.......................      %      %       %
    Rule 12b-1 fees.....................  none    .25%    .35%
    Other Expenses including
     Administration Fees................      %      %       %
                                        ------- ------- -------
    Total Fund Operating Expenses (after
     expense reimbursement).............   .16%   .41%    .51%
                                        ------- ------- -------
                                        ------- ------- -------
</TABLE>
    
 
---------
   
*_ The Expense Summary above has been restated to reflect the Fund's  
Investment
   Adviser's  and Administrator's voluntary reimbursement arrangements in 
effect
   for the Fund's fiscal year ending January 31, 1995. With respect to class  
A,
   Class  B and Class  C shares for the  month of January,  1995, the Total 
Fund
   Operating Expenses including reimbursement of expenses are anticipated to  
be
   .18%, .43% and .53%, respectively.
    
 
   
    In  order to  maintain a competitive  expense ratio during  1994, the 
Fund's
Investment Adviser and  Administrator have voluntarily  agreed to reimburse  
the
Fund  if and  to the  extent that  total operating  expenses (other  than 
taxes,
interest, brokerage  fees and  commissions, Rule  12b-1 fees  and  
extraordinary
expenses) exceed .16% of average daily net assets through December 31, 1994. 
For
the years 1995-1997, the Investment Adviser and Administrator intend to 
continue
voluntarily  to  reimburse  the Fund  to  the  extent necessary  to  maintain 
an
annualized expense ratio at a  level no greater than  .18% of average daily  
net
assets.  The voluntary  reimbursement arrangements  described above  will not 
be
changed unless shareholders are provided at  least 60 days' advance notice.  
The
maximum   annual  contractual  fees  payable   to  the  Investment  Adviser  
and
Administrator total .20% of  average daily net  assets. Absent reimbursement  
of
expenses,  the Total  Fund Operating Expenses  of Class  A, Class B  and Class 
C
would be .28%,  .53% and  .63%, respectively, of  the Fund's  average daily  
net
assets.
    
 
   
EXAMPLE:  An investor would  pay the following expenses  on a $1,000 
investment,
assuming (1) a  5% annual  return and  (2) redemption at  the end  of each  
time
period with respect to the following shares:
    
 
   
<TABLE>
<CAPTION>
                                              1 YEAR          3 YEARS          
5 YEARS          10 YEARS
                                          --------------   --------------   --
------------   --------------
<S>                                       <C>              <C>              
<C>              <C>
Class A shares:.........................        $2              $ 5              
$ 9              $20
Class B shares:.........................        $4              $13              
$23              $52
Class C shares:.........................        $5              $16              
$29              $64
</TABLE>
    
 
                                       2
<PAGE>
   
THE  FOREGOING SHOULD NOT BE CONSIDERED  A REPRESENTATION OF ACTUAL EXPENSES 
AND
RATES OF RETURN, WHICH MAY BE GREATER OR LESSER THAN THOSE SHOWN.
    
 
    The purpose of the foregoing table is to assist an investor in 
understanding
the various costs and expenses that an  investor in the Fund will bear  
directly
or  indirectly. Certain Service Organizations (as defined below) also may 
charge
their clients fees in connection with investments in Fund shares, which fees 
are
not reflected in the table. For more complete descriptions of the various  
costs
and  expenses, see "Management of the Fund" in this Prospectus and the 
Statement
of Additional Information.
 
   
                              FINANCIAL HIGHLIGHTS
    
 
   
    The following financial  highlights for  the fiscal year  ended January  
31,
1994  is derived from the  Fund's Financial Statement audited  by Ernst & 
Young,
independent accountants. This information should be read in conjunction with 
the
financial  statements  and  notes  thereto  that  appear  in  the  Statement  
of
Additional Information.
    
 
   
                         PRIME VALUE MONEY MARKET FUND
    
 
   
<TABLE>
<CAPTION>
                                              PERIOD ENDED   PERIOD ENDED 
PERIOD ENDED
                                                1/31/94*       1/31/94*     
1/31/94*
                                                 CLASS A       CLASS B      
CLASS D
                                             --------------- ------------ ----
--------
<S>                                          <C>             <C>          <C>
Net asset value, beginning of period.........          $1.00       $1.00       
$1.00
Net investment income(1).....................         0.0315      0.0125       
0.0021
Dividends from net investment income.........        (0.0315)     (0.0125)     
(0.0021)
Net asset value, end of period...............          $1.00       $1.00        
$1.00
Total return(2)..............................           3.21%        1.26%        
0.26%
Ratios to average net assets/supplemental
 data:
Net assets, end of period (in 000's).........     $3,981,184     $17,504          
$10
Ratio of net investment income to average net
 assets(3)...................................           3.23%        2.98%        
3.10%
Ratio of operating expenses to average net
 assets(3)(4)................................           0.07%        0.32%        
0.20%
<FN>
---------
*     The  Prime Value  Money Market Fund  Class A,  Class B and  Class D 
Shares
      commenced operations on February 8, 1993, September 1, 1993 and January 
6,
      1994, respectively.
(1)   Net investment income  before waiver  of fees by  the Investment  
Adviser,
      Administrator, Custodian and Transfer Agent and expenses reimbursed by 
the
      Investment Adviser and Administrator for Class A, Class B and Class D 
were
      $0.0287, $0.0113 and $0.0010, respectively.
(2)   Total return represents aggregate total return for the period indicated.
(3)   Annualized.
(4)   Annualized  expense ratio before waiver of fees by the Investment 
Adviser,
      Administrator, Custodian and Transfer Agent and expenses reimbursed by 
the
      Investment Adviser and Administrator for Class A, Class B and Class D 
were
      0.36%, 0.61% and 0.49%, respectively.
</TABLE>
    
 
                                       3
<PAGE>
                       INVESTMENT OBJECTIVE AND POLICIES
 
   
IN GENERAL
    
   
    The Fund's investment objective is  to provide current income and  
stability
of  principal. In pursuing its investment objective, the Fund, which operates 
as
a diversified  investment portfolio,  invests  in a  broad range  of  short-
term
instruments,  including U.S. government and U.S. and foreign bank and 
commercial
obligations and repurchase agreements relating to such obligations.
    
 
   
    PRICE AND PORTFOLIO MATURITY.  The Fund invests only in securities that  
are
purchased  with  and payable  in U.S.  dollars  and that  have (or,  pursuant 
to
regulations adopted by the Securities and Exchange Commission, will be deemed 
to
have) remaining maturities of thirteen months or less at the date of purchase 
by
the Fund. The Fund maintains a dollar-weighted average portfolio maturity of  
90
days  or less. The Fund follows these  policies to maintain a constant net 
asset
value of $1.00 per share, although there is no assurance that it can do so on  
a
continuing basis.
    
 
    PORTFOLIO  QUALITY AND DIVERSIFICATION.   The Fund  will limit its 
portfolio
investments to securities that the Trust's Board of Trustees determines  
present
minimal  credit  risks  and  which  are "Eligible  Securities"  at  the  time 
of
acquisition by the Fund. The term Eligible Securities includes securities  
rated
by  the  "Requisite  NRSROs"  in  one  of  the  two  highest  short-term  
rating
categories, securities of issuers that  have received such ratings with  
respect
to   other  short-term  debt  securities   and  comparable  unrated  
securities.
"Requisite NRSROs" means  (a) any two  nationally recognized statistical  
rating
organizations ("NRSROs") that have issued a rating with respect to a security 
or
class  of debt obligations of an issuer, or (b) one NRSRO, if only one NRSRO 
has
issued such a rating at the time that the Fund acquires the security. 
Currently,
there are six NRSROs: Standard & Poor's Corporation, Moody's Investors  
Service,
Inc.,  Fitch Investors Services,  Inc., Duff and Phelps,  Inc., IBCA Limited 
and
its affiliate, IBCA,  Inc. and Thomson  Bankwatch. A discussion  of the  
ratings
categories  of  the NRSROs  is contained  in  the Appendix  to the  Statement 
of
Additional Information.
 
   
    The Fund generally may  not invest more  than 5% of it  total assets in  
the
securities  of  any  one  issuer,  except  for  U.S.  government  securities. 
In
addition, the Fund may not invest more  than 5% of its total assets in  
Eligible
Securities  that have not received the  highest rating from the Requisite 
NRSROs
and comparable unrated securities ("Second Tier Securities") and may not  
invest
more than 1% of its total asset in the Second Tier Securities of any one 
issuer.
The  Fund may  invest more than  5% (but no  more than 25%)  of the then-
current
value of the  Fund's total assets  in the securities  of a single  issuer for  
a
period of up to three business days, provided that (a) the securities either 
are
rated  by the Requisite NRSROs in the  highest short-term rating category or 
are
securities of  issuers that  have received  such rating  with respect  to  
other
short-term  debt securities  or are comparable  unrated securities,  and (b) 
the
Fund does not make more than one such investment at any one time.
    
 
    The following descriptions illustrate the kinds of instruments in which  
the
Fund invests:
 
    The  Fund may purchase obligations of  issuers in the banking industry, 
such
as commercial paper,  notes, certificates of  deposit, bankers' acceptances  
and
time deposits and U.S. dollar-denominated instruments issued or supported by 
the
credit  of U.S. or foreign banks or  savings institutions having total assets 
at
the time  of  purchase  in  excess  of  $1  billion.  The  Fund  may  also  
make
interest-bearing savings deposits in commercial and savings banks in amounts 
not
in excess of 5% of its assets.
 
                                       4
<PAGE>
   
    The  Fund may invest  in commercial paper  and other short-term 
obligations.
The Fund may not invest in commercial paper or obligations of foreign issuers.
    
 
   
    The  Fund  may  invest  substantially  in  securities  of  foreign  
issuers,
including  obligations of  foreign banks or  foreign branches of  U.S. banks 
and
debt securities  of  foreign issuers,  where  the Investment  Adviser  deem  
the
instrument  to present  minimal credit  risks. Investments  in foreign  banks 
or
foreign  issuers  present   certain  risks,  including   those  resulting   
from
fluctuations  in  currency  exchange rates,  revaluation  of  currencies, 
future
political and  economic developments  and the  possible imposition  of  
currency
exchange  blockages  or  other  foreign governmental  laws  or  restrictions 
and
reduced availability of  public information. Foreign  issuers are not  
generally
subject  to uniform accounting, auditing and financial reporting standards or 
to
other regulatory practices and requirements applicable to domestic issuers.
    
 
   
    The Fund may purchase variable or  floating rate notes, which are  
unsecured
instruments  that provide for adjustments in  the interest rate on certain 
reset
dates or whenever a  specified interest rate  index changes, respectively.  
Such
notes  may not be actively traded in a  secondary market but, in some cases, 
the
Fund may  be able  to  resell such  notes in  the  dealer market.  Variable  
and
floating  rate notes  typically are rated  by credit rating  agencies, and 
their
issuers must satisfy  the same  quality criteria as  set forth  above. The  
Fund
invests  in variable  or floating  rate notes  only when  the Investment 
Adviser
deems the investment to involve minimal credit risk.
    
 
    The Fund may purchase instruments from financial institutions, such as 
banks
and broker-dealers, subject to the seller's  agreement to repurchase them at  
an
agreed  upon  time  and  price ("repurchase  agreements").  The  seller  under 
a
repurchase agreement will be  required to maintain the  value of the  
securities
subject  to the agreement at not less  than the repurchase price. Default by 
the
seller would,  however, expose  the Fund  to possible  loss because  of  
adverse
market  action or  delay in  connection with  the disposition  of the 
underlying
obligations.
 
    The Fund may also purchase securities on a "when-issued" basis.  When-
issued
securities  are securities purchased  for delivery beyond  the normal 
settlement
date at a  stated price  and yield.  The Fund will  generally not  pay for  
such
securities or start earning interest on them until they are received. 
Securities
purchased  on a when-issued  basis are recorded  as an asset  and are subject 
to
changes in value based upon changes in the general level of interest rates.  
The
Fund expects that commitments to purchase when-issued securities will not 
exceed
25%  of the value of its total assets absent unusual market conditions. The 
Fund
does not intend to purchase when-issued securities for speculative purposes  
but
only in furtherance of its investment objective.
 
    The  Fund  may  purchase  obligations  issued  or  guaranteed  by  the  
U.S.
government  or  its  agencies  and  instrumentalities.  Obligations  of  
certain
agencies  and instrumentalities  of the U.S.  government are backed  by the 
full
faith and credit of  the United States.  Others are backed by  the right of  
the
issuer  to borrow from the U.S. Treasury or are backed only by the credit of 
the
agency or instrumentality issuing the obligation.
 
   
    In addition, the Fund  may, when deemed appropriate  in light of the  
Fund's
investment  objective, invest in high  quality, short-term obligations issued 
by
the state and local governmental issuers which carry yields that are 
competitive
with those of other types of money market instruments of comparable quality.
    
 
    The Fund will not knowingly invest more  than 10% of the value of its  
total
assets in illiquid securities, including time deposits and repurchase 
agreements
having maturities longer than seven days. Securities that have readily 
available
market  quotations  are  not deemed  illiquid  for purposes  of  this 
limitation
(irrespective of
 
                                       5
<PAGE>
   
any legal  or  contractual restrictions  on  resale).  The Fund  may  invest  
in
commercial  obligations issued in reliance  on the so-called "private 
placement"
exemption from registration afforded  by Section 4(2) of  the Securities Act  
of
1933,  as amended ("Section 4(2) paper").  The Fund may also purchase 
securities
that are not registered under the Securities Act of 1933, as amended, but  
which
can be sold to qualified institutional buyers in accordance with Rule 144A 
under
that  Act  ("Rule 144A  securities").  Section 4(2)  paper  is restricted  as 
to
disposition under  the  federal  securities  laws,  and  generally  is  sold  
to
institutional  investors such as the Fund who agree that they are purchasing 
the
paper for investment and not with a  view to public distribution. Any resale  
by
the  purchaser must be in an exempt  transaction. Section 4(2) paper normally 
is
resold to  other institutional  investors  like the  Fund  through or  with  
the
assistance  of the issuer or investment dealers who make a market in the 
Section
4(2) paper, thus  providing liquidity.  Rule 144A securities  generally must  
be
sold  to other  qualified institutional  buyers. If  a particular  investment 
in
Section 4(2) paper or Rule 144A securities is not determined to be liquid,  
that
investment  will be included within the 10% limitation on investment in 
illiquid
securities.
    
 
    There can  be  no  assurance  that the  Fund  will  achieve  its  
investment
objective.
 
INVESTMENT LIMITATIONS
 
   
    The  Fund's investment  objective and the  policies described  above are 
not
fundamental and may be changed by the  Trust's Board of Trustees without a  
vote
of  shareholders. If  there is a  change in the  investment objective, 
investors
should consider whether the Fund remains  an appropriate investment in light  
of
their   then  current  financial  position  and  needs.  The  Fund's  
investment
limitations summarized below may not be changed without the affirmative vote  
of
the  holders of a  majority of its  outstanding shares. (A  complete list of 
the
investment limitations that cannot be changed without a vote of shareholders  
is
contained in the Statement of Additional Information under "Investment 
Objective
and Policies.")
    
 
The Fund may not:
 
        1.   Borrow money, except from banks  for temporary purposes and then 
in
    amounts not in excess of 10% of the  value of the Fund's assets at the  
time
    of  such borrowing; or pledge any assets  except in connection with any 
such
    borrowing and in amounts not in excess  of the lesser of the dollar  
amounts
    borrowed  or 10%  of the  value of  the Fund's  assets at  the time  of 
such
    borrowing. Additional investments will not be made when borrowings exceed 
5%
    of the Fund's assets.
 
   
        2.  Purchase any securities which would cause, at the time of  
purchase,
    less than 25% of the value of its total assets to be invested in 
obligations
    of  issuers in  the banking industry  or in obligations,  such as 
repurchase
    agreements, secured  by such  bank  obligations (unless  the  Fund is  in  
a
    temporary defensive position) or which would cause, at the time of 
purchase,
    75%  or  more  of the  value  of its  total  assets  to be  invested  in 
the
    obligations of issuers  in any  other industry,  provided that  there is  
no
    limitation with respect to investments in U.S. government obligations.
    
 
                       PURCHASE AND REDEMPTION OF SHARES
 
PURCHASE PROCEDURES
 
   
    Shares  of the Fund  are sold at the  net asset value per  share of the 
Fund
next determined  after receipt  of  a purchase  order  by Lehman  Brothers,  
the
Distributor   of   the   Fund's   shares.  Purchase   orders   for   shares  
are
    
 
                                       6
<PAGE>
   
accepted only on days on which both Lehman Brothers and the Federal Reserve 
Bank
of Boston are open for business and  must be transmitted to Lehman Brothers,  
by
telephone  at 1-800-851-3134. Orders  received prior to  noon, Eastern time, 
for
which payment  has  been received  by  Boston  Safe Deposit  and  Trust  
Company
("Boston Safe"), the Fund's Custodian, will be executed at noon. Orders 
received
between noon and 3:00 P.M., Eastern time, will be executed at 3:00 P.M., 
Eastern
time,  if payment  has been  received by Boston  Safe by  3:00 P.M.  and will 
be
executed at 4:00 P.M., if payment has been received by 4:00 P.M. Orders 
received
after 3:00 P.M.,  and orders for  which payment  has not been  received by  
4:00
P.M.,  Eastern time, will not  be accepted, and notice  thereof will be given 
to
the institution placing the order. Payment for  Fund Shares may be made only  
in
federal  funds immediately available  to Boston Safe.  (Payment for orders 
which
are not received or  accepted by Lehman Brothers  will be returned after  
prompt
inquiry  to the sending institution.) The Fund  may in its discretion reject 
any
order for shares.
    
 
   
    The minimum aggregate initial investment by an institution in the 
investment
portfolios that comprise  the Trust is  $1 million (with  not less than  
$25,000
invested  in  any  one  investment portfolio  offered  by  the  Trust); 
however,
broker-dealers and other institutional  investors may set  a higher minimum  
for
their  customers. To reach the  minimum Trust-wide initial investment, 
purchases
of shares may be  aggregated over a  period of six months.  There is no  
minimum
subsequent investment.
    
 
   
    Conflict  of interest restrictions may apply  to an institution's receipt 
of
compensation paid by  the Fund in  connection with the  investment of  
fiduciary
funds  in Class B or  Class C shares. See  also "Management of the Fund--
Service
Organizations." Institutions, including  banks regulated by  the Comptroller  
of
the  Currency and  investment advisers and  other money managers  subject to 
the
jurisdiction of the Securities and Exchange Commission, the Department of  
Labor
or  state  securities commissions,  are urged  to  consult their  legal 
advisors
before investing fiduciary funds in Class B or Class C shares.
    
 
   
    SUBACCOUNTING SERVICES.  Institutions are  encouraged to open single  
master
accounts.  However, certain  institutions may wish  to use  the Transfer 
Agent's
subaccounting system to minimize their internal recordkeeping requirements.  
The
Transfer  Agent  charges a  fee  based on  the  level of  subaccounting 
services
rendered. Institutions holding Fund shares in a fiduciary, agency, custodial  
or
similar  capacity may charge or pass through subaccounting fees as part of or 
in
addition to normal trust or agency account  fees. They may also charge fees  
for
other  services provided which may  be related to the  ownership of Fund 
shares.
This Prospectus should, therefore, be  read together with any agreement  
between
the  customer and the institution with regard to the services provided, the 
fees
charged for those services and any restrictions and limitations imposed.
    
 
REDEMPTION PROCEDURES
 
   
    Redemption orders must  be transmitted  to Lehman Brothers  by telephone  
at
1-800-851-3134.  Payment for  redeemed shares  for which  a redemption  order 
is
received by Lehman Brothers before 3:00 P.M.,  Eastern time, on a day that  
both
Lehman  Brothers and the Federal Reserve Bank of Boston are open for business 
is
normally made in federal  funds wired to the  redeeming shareholder on the  
same
business day. Payment for redemption orders which are received between 3:00 
P.M.
and  4:00 P.M.,  Eastern time, is  normally wired  in federal funds  on the 
next
business day following redemption.
    
 
   
    Shares are redeemed at the net  asset value per share next determined  
after
Lehman  Brothers' receipt of the redemption order. While the Fund intends to 
use
its best  efforts to  maintain  its net  asset value  per  share at  $1.00,  
the
proceeds paid to an investor upon redemption may be more or less than the 
amount
invested depending
    
 
                                       7
<PAGE>
   
upon  a share's net asset  value at the time of  redemption. To allow the 
Fund's
Investment Adviser to manage the Fund effectively, investors are strongly  
urged
to initiate all investments or redemptions of Fund shares as early in the day 
as
possible  to notify Lehman Brothers at least  one day in advance of 
transactions
in excess of $5 million.
    
 
   
    The Fund reserves the  right to wire redemption  proceeds within seven  
days
after  receiving  the redemption  order if,  in the  judgment of  the 
Investment
Adviser, an earlier payment could adversely affect the Fund. The Fund shall 
have
the right to redeem involuntarily shares in any account at their net asset 
value
if the value of the  account is less than $10,000  after 60 days' prior  
written
notice  to the investor. Any such redemption  shall be effected at the net 
asset
value per share next determined after the redemption order is entered. If 
during
the 60-day period the investor increases the value of its account to $10,000  
or
more,  no such  redemption shall  take place. In  addition, the  Fund may 
redeem
shares involuntarily or suspend the right  of redemption as permitted under  
the
Investment  Company Act of 1940,  as amended (the "1940  Act"), or under 
certain
special circumstances described in the Statement of Additional Information 
under
"Additional Purchase and Redemption Information."
    
 
   
VALUATION OF SHARES--NET ASSET VALUE
    
   
    The Fund's net asset  value per share for  purposes of pricing purchase  
and
redemption  orders is  determined by the  Fund's Administrator as  of noon, 
3:00
P.M. and 4:00 P.M., Eastern time, on  each weekday, with the exception of  
those
holidays  on which either Lehman Brothers or  the Federal Reserve Bank of 
Boston
is closed.  Currently, one  or both  of  these institutions  are closed  on  
the
customary  national business  holidays of  New Year's  Day, Martin  Luther 
King,
Jr's. Birthday (observed), Presidents' Day (Washington's Birthday), Good 
Friday,
Memorial Day, Independence  Day, Labor  Day, Columbus  Day (observed),  
Veterans
Day,  Thanksgiving  Day  and  Christmas  Day, and  on  the  preceding  Friday 
or
subsequent Monday when  one of  these holidays falls  on a  Saturday or  
Sunday,
respectively.  The net  asset value  per share of  Fund shares  is calculated 
by
adding the value  of all securities  and other assets  of the Fund,  
subtracting
liabilities,  and  dividing  the  result  by  the  total  number  of  the 
Fund's
outstanding shares (irrespective of class or sub-class). In computing net  
asset
value,  the Fund uses the amortized cost method of valuation as described in 
the
Statement of Additional  Information under "Additional  Purchase and  
Redemption
Information."  The  Fund's net  asset value  per share  for purposes  of 
pricing
purchase and  redemption orders  is determined  independently of  the net  
asset
values of the shares of the Trust's other investment portfolios.
    
 
   
OTHER MATTERS
    
    Fund  shares are sold and redeemed without charge by the Fund. 
Institutional
investors purchasing  or holding  Fund shares  for their  customer accounts  
may
charge  customers  fees  for  cash management  and  other  services  provided 
in
connection with their accounts. A customer should, therefore, consider the 
terms
of its account with an institution before purchasing Fund shares. An 
institution
purchasing or redeeming Fund  shares on behalf of  its customers is  
responsible
for  transmitting  orders to  Lehman Brothers  in  accordance with  its 
customer
agreements.
 
   
                                   DIVIDENDS
    
 
   
    **1 Investors  of  the Fund  are  entitled to  dividends  and  
distributions
arising only from the net investment income and capital gains, if any, earned 
on
investments held by the Fund. The Fund's net investment income is declared 
daily
as  a dividend to shares held  of record at the close  of business on the day 
of
declaration. Shares
    
 
                                       8
<PAGE>
   
begin accruing  dividends  on the  day  the purchase  order  for the  shares  
is
executed and continue to accrue dividends through, and including, the day 
before
the  redemption order for the shares is  executed. Dividends are paid monthly 
by
wire transfer within five  business days after  the end of  the month or  
within
five  business  days after  a redemption  of all  of an  investor's shares  of 
a
particular class. The  Fund does  not expect  to realize  net long-term  
capital
gains.
    
 
   
    **2  Dividends are determined  in the same  manner and are  paid in the 
same
amount for each Fund share, except that Class B and Class C shares bear all  
the
expense  of fees paid to Service Organizations.  As a result, at any given 
time,
the net yield on Class B and Class C shares will be .25% and .35%, 
respectively,
lower than the net yield on Class A shares.
    
 
   
    Institutional investors  may elect  to have  their dividends  reinvested  
in
additional  full and fractional shares of the  same class of shares with 
respect
to which such dividends are  declared at the net asset  value of such shares  
on
the  payment  date.  Reinvested  dividends receive  the  same  tax  treatment 
as
dividends paid in cash. Such election,  or any revocation thereof, must be  
made
in  writing to the Fund's Distributor,  260 Franklin Street, 15th Floor, 
Boston,
Massachusetts 02110-9624, and  will become  effective after its  receipt by  
the
Distributor, with respect to dividends paid.
    
 
   
    **3  TSSG,  as Transfer  Agent, will  send each  investor or  its 
authorized
representative, if  any  an  annual  statement designating  the  amount  of  
any
dividends  and  capital  gains distributions  made  during each  year  and 
their
federal tax qualification.
    
 
   
                                     TAXES
    
 
   
    The Fund qualified in its last taxable year and intends to qualify in 
future
years as a  "regulated investment company"  under the Internal  Revenue Code  
of
1986,  as amended  (the "Code"). A  regulated investment company  is exempt 
from
federal income tax on amounts distributed to its investors.
    
 
   
    **4 Qualification as  a regulated investment  company under the  Code for  
a
taxable  year  requires, among  other things,  that the  Fund distribute  to 
its
investors at least 90% of its  investment company taxable income for such  
year.
In  general, the  Fund's investment company  taxable income will  be its 
taxable
income (including dividends  and short-term  capital gains, if  any) subject  
to
certain  adjustments and excluding the excess  of any net long-term capital 
gain
for the taxable  year over the  net short-term  capital loss, if  any, for  
such
year. The Fund intends to distribute substantially all of its investment 
company
taxable  income each year. Such distributions will be taxable as ordinary 
income
to Fund  investors who  are  not currently  exempt  from federal  income  
taxes,
whether  such income is received in cash  or reinvested in additional shares. 
It
is anticipated that none  of the Fund's distributions  will be eligible for  
the
dividends  received  deduction for  corporations. The  Fund  does not  expect 
to
realize long-term capital gains and, therefore, does not contemplate payment  
of
any "capital gain dividends" as described in the Code.
    
 
   
    **5  Dividends declared in October, November or December of any year 
payable
to investors of record on a specified date in such months will be deemed to 
have
been received by the investors and paid by the Fund on December 31 of such  
year
in  the event such dividends  are actually paid during  January of the 
following
year.
    
 
   
    **6 Investors will be advised at least annually as to the federal income 
tax
status of distributions made to them each year.
    
 
                                       9
<PAGE>
   
    **7 The  foregoing  discussion  is only  a  brief  summary of  some  of  
the
important  federal  tax  considerations  generally affecting  the  Fund  and 
its
shareholders. No  attempt is  made  to present  a  detailed explanation  of  
the
federal,  state or local income tax treatment  of the Fund or its investors, 
and
this discussion  is not  intended  as a  substitute  for careful  tax  
planning.
Accordingly,  potential investors in the Fund  should consult their tax 
advisors
with specific reference to their own tax situation.
    
 
                             MANAGEMENT OF THE FUND
 
   
    The business and affairs of the Fund are managed under the direction of  
the
Trust's  Board  of Trustees.  The  Trustees approve  all  significant 
agreements
between the Trust  and the  persons or companies  that furnish  services to  
the
Fund,   including   agreements   with  its   Distributor,   Investment  
Adviser,
Administrator, Custodian and  Transfer Agent. The  day-to-day operations of  
the
Fund  are  delegated to  the Fund's  Investment  Adviser and  Administrator. 
The
Statement of  Additional  Information  relating to  the  Fund  contains  
general
background  information  regarding each  Trustee  and executive  officer  of 
the
Trust.
    
 
   
DISTRIBUTOR
    
   
    Lehman Brothers, located  at 3 World  Financial Center, New  York, New  
York
10285,  is the Distributor of the Fund's shares. Lehman Brothers, a leading 
full
service investment  firm,  meets the  diverse  financial needs  of  
individuals,
institutions  and governments around the world. Lehman Brothers has entered 
into
a  Distribution  Agreement  with  the  Trust  pursuant  to  which  it  has   
the
responsibility for distributing shares of the Fund.
    
 
   
INVESTMENT ADVISER--LEHMAN BROTHERS GLOBAL ASSET MANAGEMENT INC.
    
   
    Lehman  Brothers Global Asset Management Inc.  ("LBGAM"), located at 3 
World
Financial Center, New  York, New  York 10285,  serves as  the Fund's  
Investment
Adviser. LBGAM is a wholly owned subsidiary of Shearson Lehman Brothers 
Holdings
Inc. ("Holdings"). LBGAM, together with other Lehman Brother investment 
advisory
affiliates,  serves as  Investment Adviser  to investment  companies and 
private
accounts and  has assets  under management  in  excess of  [$15] billion  as  
of
___________, 1994.
    
 
   
    As   Investment  Adviser  to  the  Fund,  LBGAM  will  among  other  
things,
participate in  the  formulation  of the  Fund's  investment  policies,  
analyze
economic  trends  affecting  the  Fund  and  monitor  and  evaluate  the  
Fund's
investment objective and policies and the Fund's investment performance. For 
its
services LBGAM is entitled to receive a monthly fee from the Fund at the  
annual
rate of .10% of the value of the Fund's average daily net assets. For the 
period
February  8,  1993  (commencement  of operations)  to  January  31,  1994, 
LBGAM
received an advisory fee from the Fund in the amount of ._% of average daily 
net
assets.
    
 
   
ADMINISTRATOR AND TRANSFER AGENT--THE SHAREHOLDER SERVICES GROUP, INC.
    
   
    The Shareholder  Services  Group, Inc.  ("TSSG"),  located at  One  
Exchange
Place,  53  State  Street, Boston,  Massachusetts  02109, serves  as  the 
Fund's
Administrator and Transfer  Agent. TSSG is  a wholly owned  subsidiary of  
First
Data  Corporation. As Administrator, TSSG calculates  the net asset value of 
the
Fund's shares and generally assists in all aspects of the Fund's  
administration
and  operation. As  compensation for TSSG's  services as  Administrator, TSSG 
is
entitled to receive from the  Fund a monthly fee at  the annual rate of .10%  
of
the  value of  the Fund's  average daily  net assets.  TSSG is  also entitled 
to
receive a fee from the Fund for its services as Transfer Agent. TSSG pays 
Boston
Safe, the Fund's  Custodian, a  portion of  its monthly  administration fee  
for
custody services rendered to the Fund.
    
 
                                       10
<PAGE>
   
CUSTODIAN--BOSTON SAFE DEPOSIT AND TRUST COMPANY
    
   
    Boston  Safe, a wholly owned subsidiary of The Boston Company, Inc., 
located
at  One  Boston  Place,  Boston,  Massachusetts  02108,  serves  as  the  
Fund's
Custodian.
    
 
SERVICE ORGANIZATIONS
 
   
    Financial  institutions, such  as banks,  savings and  loan associations 
and
other such institutions ("Service Organizations") and/or institutional 
customers
of Service Organizations may  purchase Class B or  Class C shares. These  
shares
are  identical in all respects to Class A  shares except that they bear the 
fees
described below and enjoy certain exclusive voting rights on matters relating 
to
these fees. The Fund will enter into an agreement with each Service 
Organization
whose customers ("Customers") are  the beneficial owners of  Class B or Class  
C
shares  that requires  the Service Organization  to provide  certain services 
to
Customers in consideration of the Fund's  payment of service fees at the  
annual
rate  of .25% or .35%, respectively, of the average daily net asset value of 
the
respective Class  beneficially  owned by  Customers.  Such services,  which  
are
described   more  fully  in  the   Statement  of  Additional  Information  
under
"Management of the Fund's--Service  Organizations," may include aggregating  
and
processing  purchase  and redemption  requests  from Customers  and  placing 
net
purchase  and  redemption  orders  with  Lehman  Brothers;  processing  
dividend
payments   from  the  Fund   on  behalf  of   Customers;  providing  
information
periodically to Customers showing their positions in shares; arranging for  
bank
wires; responding to Customer inquiries relating to the services provided by 
the
Service  Organization  and  handling correspondence;  acting  as  shareholder 
of
record and nominee; and providing  reasonable assistance in connection with  
the
distribution  of shares to Customers. Services  provided with respect to Class 
B
shares will generally be more limited than those provided with respect to  
Class
C  shares. Under the terms of the agreements, Service Organizations are 
required
to provide  to their  Customers a  schedule of  any fees  that they  may  
charge
Customers  in connection with  their investments in  Class B or  Class C 
shares.
Class A shares  are sold to  financial institutions that  have not entered  
into
servicing  agreements  with the  Fund in  connection  with their  investments. 
A
salesperson and any other person entitled to receive compensation for selling 
or
servicing shares of the Fund may  receive different compensation for selling  
or
servicing one Class of shares over another Class.
    
 
EXPENSES
 
   
    The  Fund bears  all its  own expenses.  The Fund's  expenses include 
taxes,
interest, fees and  salaries of the  Trust's trustees and  officers who are  
not
directors,  officers or employees of  the Fund's service contractors, 
Securities
and Exchange  Commission fees,  state securities  qualification fees,  costs  
of
preparing and printing prospectuses for regulatory purposes and for 
distribution
to  investors,  advisory  and  administration fees,  charges  of  the 
custodian,
transfer agent and dividend disbursing agent, Service Organization fees, 
certain
insurance premiums, outside  auditing and legal  expenses, costs of  
shareholder
reports  and shareholder meetings and any  extraordinary expenses. The Fund 
also
pays for brokerage fees and commissions (if any) in connection with the 
purchase
and sale of  portfolio securities. In  order to maintain  a competitive  
expense
ratio  during 1994, LBGAM and TSSG have agreed voluntarily to reimburse the 
Fund
if and to the extent that the Fund's total operating expenses (other than 
taxes,
interest, brokerage fees and commissions, Rule 12b-1 fees under the 1940 Act 
and
extraordinary expenses) exceed .16% of average daily net assets through 
December
31,  1994.  The  Investment  Adviser   and  Administrator  intend  to   
continue
voluntarily  to  reimburse  the Fund  to  the  extent necessary  to  maintain 
an
annualized expense ratio at a  level no greater than  .18% of average daily  
net
assets  thereafter.  This voluntary  reimbursement  will not  be  changed 
unless
investors are provided  at least  60 days'  advance notice.  In addition,  
these
service  providers have agreed to  reimburse the Fund to  the extent required 
by
applicable state
    
 
                                       11
<PAGE>
law for  certain expenses  that are  described in  the Statement  of  
Additional
Information  relating to the Fund. Any  fees charged by Service Organizations 
or
other institutional investors to their customers in connection with  
investments
in Fund shares are not reflected in the Fund's expenses.
 
   
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                                     YIELDS
 
   
    From  time to time, the "yields" and "effective yields" for Class A, Class 
B
and  Class  C  shares  may  be  quoted  in  advertisements  or  in  reports   
to
shareholders. Yield quotations are computed separately for each Class of 
shares.
The  "yield" quoted  in advertisements  for a  particular class  or sub-class 
of
shares refers to the  income generated by  an investment in  such shares over  
a
specified  period (such as a seven-day  period) identified in the 
advertisement.
This income is then "annualized;" that is, the amount of income generated by 
the
investment during that period is assumed to be generated each such period over 
a
52-week or one-year period and is shown  as a percentage of the investment.  
The
"effective  yield"  is calculated  similarly  but, when  annualized,  the 
income
earned by an  investment in a  particular class  or sub-class is  assumed to  
be
reinvested.  The  "effective yield"  will be  slightly  higher than  the 
"yield"
because of the compounding effect of this assumed reinvestment.
    
 
   
    The Fund's  yields may  be compared  to  those of  other mutual  funds  
with
similar  objectives, to stock or other relevant indices, or to rankings 
prepared
by independent services or other financial or industry publications that 
monitor
the performance of mutual funds. For example, such data are reported in 
national
financial publications such as IBC/DONOGHUE'S MONEY FUND REPORT, THE WALL 
STREET
JOURNAL and THE NEW YORK TIMES,  reports prepared by LIPPER ANALYTICAL  
SERVICE,
INC. and publications of a local or regional nature.
    
 
   
    The  Fund's yield figures for a  Class of shares represent past 
performance,
will fluctuate and should not be considered as representative of future 
results.
The yield of  any investment is  generally a function  of portfolio quality  
and
maturity, type of investment and operating expenses. Since holders of Class B 
or
Class  C  shares  bear  the  service  fees  for  services  provided  by  
Service
Organizations, the net yield on such shares can be expected at any given time 
to
be lower than  the net  yield on  Class A shares.  Any fees  charged by  
Service
Organizations  or other institutional  investors directly to  their customers 
in
connection with  investments in  Fund shares  are not  reflected in  the  
Fund's
expenses  or yields; and, such fees, if  charged, would reduce the actual 
return
received by customers  on their  investments. The  methods used  to compute  
the
Fund's  yields  are described  in  more detail  in  the Statement  of 
Additional
Information. Investors may call 1-800-238-2560 (Class A shares code: 001;  
Class
B  shares  code:  101;  Class  C  shares  code:  201)  to  obtain  current 
yield
information.
    
 
                                       12
<PAGE>
                    DESCRIPTION OF SHARES AND MISCELLANEOUS
 
    The Trust  is a  Massachusetts business  trust established  on November  
25,
1992.
 
   
    The  Trust's Declaration of Trust authorizes  the Board of Trustees to 
issue
an unlimited number of full and fractional shares of beneficial interest in  
the
Trust  and  to classify  or  reclassify any  unissued  shares into  one  or 
more
additional classes of  shares. The  Trust is an  open-end management  
investment
company, which offers twelve portfolios: Prime Money Market Fund (Class A, 
Class
B  and Class C),  Prime Value Money Market  Fund (Class A, Class  B, Class C 
and
Class D), Government Obligations  Money Market Fund (Class  A, Class B, Class  
C
and  Class D), 100% Government  Obligations Money Market Fund  (Class A, Class 
B
and Class C), Treasury Instruments  Money Market Fund II  (Class A, Class B  
and
Class  C), 100%  Treasury Instruments  Money Market Fund  (Class A,  Class B 
and
Class C), Tax-Free  Money Market  Fund (Class A,  Class B,  Class C),  
Municipal
Money  Market Fund (Class A, Class B, Class C and Class D), California 
Municipal
Money Market Fund  (Class A,  Class B  and Class  C), New  York Municipal  
Money
Market  Fund (Class A, Class B and  Class C), Floating Rate U.S. Government 
Fund
(Class A and Class B) and Short Duration U.S. Government Fund (Class A and 
Class
B). Shares of the New York Municipal Money Market Fund are not currently sold 
to
the public. The Declaration of Trust further authorizes the Trustees to 
classify
or reclassify any class of shares into one or more sub-classes.
    
 
   
    THIS PROSPECTUS  AND THE  STATEMENT OF  ADDITIONAL INFORMATION  
INCORPORATED
HEREIN  RELATE PRIMARILY TO THE FUND  AND DESCRIBE ONLY THE INVESTMENT 
OBJECTIVE
AND POLICIES,  OPERATIONS, CONTRACTS  AND OTHER  MATTERS RELATING  TO THE  
FUND.
INVESTORS  WISHING  TO OBTAIN  SIMILAR INFORMATION  REGARDING THE  TRUST'S 
OTHER
PORTFOLIOS MAY OBTAIN SEPARATE PROSPECTUSES DESCRIBING THEM BY CONTACTING 
LEHMAN
BROTHERS AT 1-800-368-5556.
    
 
    The Trust does not presently intend to hold annual meetings of  
shareholders
except  as required by the 1940 Act or other applicable law. The Trust will 
call
a meeting of shareholders for the purpose of voting upon the question of 
removal
of a member of the Board of Trustees upon written request of shareholders 
owning
at least 10% of the outstanding shares of the Trust entitled to vote.
 
    Each Fund share represents  an equal, proportionate  interest in the  
assets
belonging  to the  Fund. Each  share, which  has a  par value  of $.001,  has 
no
preemptive or conversion rights.  When issued for payment  as described in  
this
Prospectus, Fund shares will be fully paid and non-assessable.
 
    Holders  of the Fund's shares will vote in the aggregate and not by class 
on
all matters, except where otherwise required by law and except that only Class 
B
or Class C  shares, as  the case may  be, will  be entitled to  vote on  
matters
submitted  to a vote of shareholders  pertaining to the Fund's arrangements 
with
Service Organizations with respect to the relevant Class. Further,  
shareholders
of  the Fund and of the Trust's other  portfolios will vote in the aggregate 
and
not by  portfolio except  as otherwise  required by  law or  when the  Board  
of
Trustees  determines that the matter to be voted upon affects only the 
interests
of the shareholders of a particular portfolio. (See the Statement of  
Additional
Information  under "Additional Description Concerning  Fund Shares" for 
examples
where the 1940 Act requires voting by portfolio.) Shareholders of the Trust  
are
entitled  to  one  vote for  each  full  share held  (irrespective  of  class 
or
portfolio) and fractional votes  for fractional shares  held. Voting rights  
are
not  cumulative; and, accordingly, the holders of more than 50% of the 
aggregate
shares of the Trust may elect all of the trustees.
 
    For information  concerning  the  redemption of  Fund  shares  and  
possible
restrictions on their transferability, see "Purchase and Redemption of 
Shares."
 
                                       13
<PAGE>
                LEHMAN BROTHERS INSTITUTIONAL FUNDS GROUP TRUST
 
   
                            Prime Money Market Fund
                         Prime Value Money Market Fund
                    Government Obligations Money Market Fund
                 100% Government Obligations Money Market Fund
                   Treasury Instruments Money Market Fund II
                  100% Treasury Instruments Money Market Fund
                          Municipal Money Market Fund
                           Tax-Free Money Market Fund
                     California Municipal Money Market Fund
                      New York Municipal Money Market Fund
    
                            ------------------------
 
   
                       Floating Rate U.S. Government Fund
                      Short Duration U.S. Government Fund
    
 
                            ------------------------
 
   
NO  PERSON  HAS  BEEN  AUTHORIZED  TO  GIVE  ANY  INFORMATION  OR  TO  MAKE  
ANY
REPRESENTATIONS NOT CON-TAINED IN THIS PROSPECTUS, OR IN THE FUND'S STATEMENT 
OF
ADDITIONAL INFORMATION INCORPORATED HEREIN BY REFERENCE, IN CONNECTION WITH  
THE
OFFERING  MADE BY  THIS PROSPECTUS  AND, IF GIVEN  OR MADE,  SUCH INFORMATION 
OR
REPRESENTATIONS MUST NOT BE RELIED UPON  AS HAVING BEEN AUTHORIZED BY THE  
TRUST
OR ITS DISTRIBUTOR. THIS PROSPECTUS DOES NOT CONSTITUTE AN OFFERING BY THE 
TRUST
OR  BY  THE DISTRIBUTOR  IN  ANY JURISDICTION  IN  WHICH SUCH  OFFERING  MAY 
NOT
LAWFULLY BE MADE.
    
                             ---------------------
                               TABLE OF CONTENTS
 
   
<TABLE>
<CAPTION>
                                                 PAGE
                                              -----------
<S>                                           <C>
Background and Expense Information..........           2
Financial Highlights........................           3
Investment Objective and Policies...........           4
Purchase and Redemption of Shares...........           6
Dividends...................................           8
Taxes.......................................           9
Management of the Fund......................          10
Yields......................................          12
Description of Shares and Miscellaneous.....          13
</TABLE>
    
 
                               PRIME VALUE MONEY
                                  MARKET FUND
 
                              -------------------
 
   
                                   PROSPECTUS
                                  May __, 1994
    
 
                             ---------------------
 
                                LEHMAN BROTHERS
 
   
THIS PROSPECTUS AND THE STATEMENT OF ADDITIONAL INFORMATION INCORPORATED 
HEREIN
  RELATE PRIMARILY TO THE FUND AND DESCRIBE ONLY THE INVESTMENT OBJECTIVE AND
    POLICIES, OPERATIONS, CONTRACTS AND OTHER MATTERS RELATING TO THE FUND.
  INVESTORS WISHING TO OBTAIN SIMILAR INFORMATION REGARDING THE TRUST'S OTHER
PORTFOLIOS MAY OBTAIN SEPARATE PROSPECTUSES DESCRIBING THEM BY CONTACTING 
LEHMAN
                          BROTHERS AT 1-800-368-5556.
    


<PAGE>
PROSPECTUS
 
                          MUNICIPAL MONEY MARKET FUND
 
                       An Investment Portfolio Offered By
                Lehman Brothers Institutional Funds Group Trust
 
    Lehman  Brothers Institutional Funds Group Trust (the "Trust") is a no-
load,
open-end, management investment company. The shares described in this 
Prospectus
represent interests in the Municipal  Money Market Fund portfolio (the  
"Fund"),
one of a family of money market portfolios of the Trust.
 
    The Fund's INVESTMENT OBJECTIVE is to provide investors with as high a 
level
of  current income exempt from federal income tax as is consistent with 
relative
stability of principal.  The Fund  invests substantially  all of  its assets  
in
short-term  tax-exempt  obligations issued  by state  and local  governments 
and
tax-exempt derivative securities. All or a  portion of the Fund's dividends  
may
be  a  specific  preference item  for  purposes  of the  federal  individual 
and
corporate alternative minimum taxes.
 
    Fund shares may not be purchased by individuals directly, but  
institutional
investors  may purchase shares for accounts  maintained by individuals. The 
Fund
currently offers  three  classes of  shares.  In  addition to  Class  A  
shares,
institutional  investors may  purchase on behalf  of their customers  Class B 
or
Class C shares which accrue daily dividends in the same manner as Class A 
shares
but bear all  fees payable by  the Fund to  institutional investors for  
certain
services  they provide to the beneficial  owners of such shares. See 
"Management
of the Fund--Service Organizations."
 
    AN INVESTMENT IN  THE FUND  IS NEITHER INSURED  NOR GUARANTEED  BY THE  
U.S.
GOVERNMENT.  THERE CAN BE NO ASSURANCE THAT IT  WILL BE ABLE TO MAINTAIN ITS 
NET
ASSET VALUE OF $1.00 PER SHARE.
 
    LEHMAN BROTHERS,  INC. ("LEHMAN  BROTHERS") sponsors  the Fund  and acts  
as
Distributor  of its shares. LEHMAN BROTHERS  GLOBAL ASSET MANAGEMENT INC. 
serves
as the Fund's Investment Adviser.
 
    The address of the Fund is One Exchange Place, Boston, Massachusetts  
02109.
The  Fund can be contacted  as follows: for purchase  and redemption orders 
only
call 1-800-851-3134; for yield information  call 1-800-238-2560 (Class A  
shares
code:  009;  Class B  shares code:  109; Class  C shares  code: 209);  for 
other
information call 1-800-368-5556.
 
    This Prospectus briefly sets forth  certain information about the Fund  
that
investors  should  know before  investing. Investors  are  advised to  read 
this
Prospectus and retain it for future reference. Additional information about  
the
Fund,  contained in a Statement of Additional Information dated May   , 1994, 
as
amended or supplemented from  time to time, has  been filed with the  
Securities
and  Exchange Commission and is available to investors without charge by 
calling
the  Fund's  Distributor   at  1-800-368-5556.  The   Statement  of   
Additional
Information is incorporated in its entirety by reference into this Prospectus.
 
    SHARES  OF THE  FUND ARE  NOT DEPOSITS OR  OBLIGATIONS OF,  OR GUARANTEED 
OR
ENDORSED BY, ANY BANK, AND SUCH SHARES ARE NOT FEDERALLY INSURED BY THE  
FEDERAL
DEPOSIT INSURANCE CORPORATION, THE FEDERAL RESERVE BOARD OR ANY OTHER 
GOVERNMENT
AGENCY.  SHARES  OF THE  FUND INVOLVE  CERTAIN  INVESTMENT RISKS,  INCLUDING 
THE
POSSIBLE LOSS OF PRINCIPAL.
                           --------------------------
 
THESE SECURITIES  HAVE  NOT  BEEN  APPROVED OR  DISAPPROVED  BY  THE  
SECURITIES
    AND  EXCHANGE  COMMISSION OR  ANY  STATE SECURITIES  COMMISSION  NOR HAS
       THE   SECURITIES   AND   EXCHANGE   COMMISSION   OR   ANY    STATE
          SECURITIES   COMMISSION   PASSED   UPON   THE   ACCURACY  OR
              ADEQUACY  OF  THIS  PROSPECTUS.  ANY  REPRESENTATION
                       TO THE CONTRARY IS A CRIMINAL OFFENSE.
                           --------------------------
 
                                LEHMAN BROTHERS
 
May   , 1994
<PAGE>
                       BACKGROUND AND EXPENSE INFORMATION
 
    The  following Expense Summary lists the costs and expenses that an 
investor
in the Fund can  expect to incur  during the Fund's  current fiscal year  
ending
January  31, 1995. The Fund  offers three separate classes  of shares. Shares 
of
each class represent  equal, pro  rata interests in  the Fund  and accrue  
daily
dividends  in the same manner  except that Class B and  Class C shares bear 
fees
payable by the Fund (at  the rate of .25% and  .35% per annum, respectively)  
to
institutions  for services they provide to the beneficial owners of such 
shares.
See "Management of the Fund--Service Organizations."
 
                                EXPENSE SUMMARY
 
<TABLE>
<CAPTION>
                                                                                       
CLASS A       CLASS B       CLASS C
                                                                                        
SHARES        SHARES        SHARES
                                                                                     
------------  ------------  ------------
<S>                                                                                  
<C>           <C>           <C>
ANNUAL FUND OPERATING EXPENSES
 (as a percentage of average net assets)
    Advisory 
Fees..................................................................       
0.10%*        0.10%*        0.10%*
    Rule 12b-1 
fees................................................................      none            
.25%          .35%
    Other Expenses--including Administration Fees (net of applicable 
waivers)......       0.06%*        0.06%*        0.06%*
                                                                                           
---           ---           ---
    Total Fund Operating Expenses (after fee 
waivers)*.............................        .16%          .41%           51%
                                                                                           
---           ---           ---
                                                                                           
---           ---           ---
<FN>
------------------------
* The Expense Summary above has  been restated to reflect the Fund's  
Investment
  Adviser's  and Administrator's voluntary  reimbursement arrangements in 
effect
  for the Fund's fiscal year ending January  31, 1995. With respect to Class  
A,
  Class  B and  Class C shares  for the month  of January, 1995,  the Total 
Fund
  Operating Expenses included  reimbursement of expenses  are anticipated to  
be
  .18%, .43% and .53%, respectively.
</TABLE>
 
    In  order to  maintain a competitive  expense ratio during  1994, the 
Fund's
Investment Adviser and  Administrator have voluntarily  agreed to reimburse  
the
Fund  if and  to the  extent that  total operating  expenses (other  than 
taxes,
interest, brokerage  fees and  commissions, Rule  12b-1 fees  and  
extraordinary
expenses) exceed .16% of average daily net assets through December 31, 1994. 
For
the years 1995-1997, the Investment Adviser and Administrator intend to 
continue
voluntarily  to  reimburse  the Fund  to  the  extent necessary  to  maintain 
an
annualized expense ratio at a  level no greater than  .18% of average daily  
net
assets.  The voluntary  reimbursement arrangements  described above  will not 
be
changed unless shareholders are provided at  least 60 days' advance notice.  
The
maximum   annual  contractual  fees  payable   to  the  Investment  Adviser  
and
Administrator total .20% of  average daily net  assets. Absent reimbursement  
of
expenses,  the Total  Fund Operating Expenses  of Class  A, Class B  and Class 
C
would be .24%,  .49% and  .59%, respectively, of  the Fund's  average daily  
net
assets.
---------
EXAMPLE
An  investor would pay  the following expenses on  a $1,000 investment, 
assuming
(1) a 5% annual return  and (2) redemption at the  end of each time period  
with
respect to the following shares:
 
<TABLE>
<CAPTION>
                                                                       1 YEAR       
3 YEARS      5 YEARS     10 YEARS
                                                                     ---------
--  -----------  -----------  -----------
<S>                                                                  <C>          
<C>          <C>          <C>
Class A shares.....................................................                
$       5    $       9    $      20
Class B shares.....................................................                
$      13    $      23    $      52
Class C shares.....................................................                
$      16    $      29    $      64
</TABLE>
 
                                       2
<PAGE>
THE  FOREGOING SHOULD NOT BE CONSIDERED  A REPRESENTATION OF ACTUAL EXPENSES 
AND
RATES OF RETURN, WHICH MAY BE GREATER OR LESSER THAN THOSE SHOWN.
 
    The purpose of the foregoing table is to assist an investor in 
understanding
the various costs and expenses that an  investor in the Fund will bear  
directly
or  indirectly. Certain Service Organizations (as defined below) also may 
charge
their clients fees in connection with investments in Fund shares, which fees 
are
not reflected in the table. For more complete descriptions of the various  
costs
and  expenses, see "Management of the Fund" in this Prospectus and the 
Statement
of Additional Information.
 
                              FINANCIAL HIGHLIGHTS
 
    The following financial  highlights for  the fiscal year  ended January  
31,
1994  is derived from the Fund's Financial  Statements audited by Ernst & 
Young,
independent accountants. This information should be read in conjunction with 
the
financial  statements  and  notes  thereto  that  appear  in  the  Statement  
of
Additional Information.
 
                          MUNICIPAL MONEY MARKET FUND
 
<TABLE>
<CAPTION>
                                                                                      
PERIOD
                                                                                      
ENDED
                                                                                     
1/31/94*
                                                                                    
----------
<S>                                                                                 
<C>
Net asset value, beginning of 
period..............................................  $     1.00
Net investment 
income(1)..........................................................      
0.0243
Dividends from net investment 
income..............................................     (0.0243)
Net asset value, end of 
period....................................................  $     1.00
Total 
return(2)...................................................................       
2.46%
Ratios to average net assets/supplemental data:
Net assets, end of period (in 
000's)..............................................  $  350,975
Ratio of net investment income to average net 
assets(3)...........................       2.53%
Ratio of operating expenses to average net 
assets(4)..............................       0.13%
<FN>
------------------------
*     The  Municipal Money  Market Fund Class  A Shares  commenced operations 
on
      February 8, 1993.
(1)   Net investment income  before waiver  of fees by  the Investment  
Adviser,
      Administrator, Custodian and Transfer Agent and expenses reimbursed by 
the
      Investment Adviser and Administrator was $0.0201.
(2)   Total return represents aggregate total return for the period indicated.
(3)   Annualized.
(4)   Annualized  expense ratio before waiver of fees by the Investment 
Adviser,
      Administrator, Custodian and Transfer Agent and expenses reimbursed by 
the
      Investment Adviser and Administrator for the fiscal year ended January 
31,
      1994 was 0.51% and for the period ended July 31, 1994 was 1.27%.
</TABLE>
 
                                       3
<PAGE>
                       INVESTMENT OBJECTIVE AND POLICIES
 
IN GENERAL
 
    The Fund's investment objective is to provide investors with as high a 
level
of current income exempt from federal income tax as is consistent with  
relative
stability  of  principal. All  or a  portion of  the Fund's  dividends may  be 
a
specific preference item for  purposes of the  federal individual and  
corporate
alternative minimum taxes.
 
    In  pursuing  its  investment  objective,  the  Fund,  which  operates  as 
a
diversified investment company,  invests substantially  all of its  assets in  
a
diversified  portfolio  of short-term  tax-exempt  obligations issued  by  or 
on
behalf of states, territories and possessions of the United States, the 
District
of Columbia, and their  respective authorities, agencies, instrumentalities  
and
political  subdivisions  and  tax-exempt derivative  securities  such  as 
tender
option bonds,  participations, beneficial  interests in  trusts and  
partnership
interests  (collectively "Municipal  Obligations"). The Fund  will not 
knowingly
purchase securities the  interest on  which is  subject to  federal income  
tax.
(See,  however, "Taxes" below concerning  treatment of exempt-interest 
dividends
paid by the Fund for purposes of the federal alternative minimum tax  
applicable
to particular categories of investors.)
 
    Opinions  relating  to  the validity  of  Municipal Obligations  and  to 
the
exemption of  interest thereon  from federal  income tax  are rendered  by  
bond
counsel to the respective issuers at the time of issuance, and opinions 
relating
to  the validity of and  the tax-exempt status of  payments received by the 
Fund
from tax-exempt derivative securities are rendered by counsel to the  
respective
sponsors  of such securities. The  Fund and its Investment  Adviser will rely 
on
such opinions  and  will not  review  independently the  underlying  
proceedings
relating  to  the  issuance  of  Municipal  Obligations,  the  creation  of  
any
tax-exempt derivative securities or the bases for such opinions.
 
    The Fund  will  purchase  only Municipal  Obligations  which  are  
"Eligible
Securities"  (as defined  by the Securities  and Exchange  Commission) and 
which
present minimal credit risks as determined by the Investment Adviser pursuant 
to
guidelines approved  by  the  Trust's Board  of  Trustees.  Eligible  
Securities
consist  of (i) securities that  either (a) have short-term  debt ratings at 
the
time of purchase within the two  highest rating categories assigned by at  
least
two   unaffiliated  nationally   recognized  statistical   rating  
organizations
("NRSROs") (or one NRSRO if  the security was rated by  only one NRSRO), or  
(b)
are  issued by issuers with  such ratings, and (ii)  certain securities that 
are
unrated (including securities of issuers that have long-term but not  short-
term
ratings)  but are of comparable quality  as determined by the Investment 
Adviser
pursuant to guidelines approved by the  Trust's Board of Trustees. The  
Appendix
to  the Statement of Additional Information includes a description of 
applicable
NRSRO ratings.
 
    Except  during   temporary  defensive   periods,   the  Fund   will   
invest
substantially  all,  but in  no  event less  than 80%,  of  its total  assets 
in
Municipal Obligations with remaining  maturities of thirteen  months or less  
as
determined  in  accordance  with  the  rules  of  the  Securities  and  
Exchange
Commission. The Fund maintains a  dollar-weighted average portfolio maturity  
of
90  days or less. The Fund may hold uninvested cash reserves pending 
investment,
during  temporary   defensive  periods   including  when   suitable   tax-
exempt
obligations  are unavailable. There is no percentage limitation on the amount 
of
assets which may  be held  uninvested. Uninvested  cash reserves  will not  
earn
income.
 
                                       4
<PAGE>
INVESTMENT LIMITATIONS
 
    There  can  be  no  assurance  that the  Fund  will  achieve  its 
investment
objective. The investment limitations enumerated below and the Fund's policy  
of
investing  at  least  80%  of  its total  assets  in  Municipal  Obligations 
are
fundamental and may not be changed by the Trust's Board of Trustees without  
the
affirmative  vote of the holders of a majority of the Fund's outstanding 
shares.
The Fund's investment  objective and other  investment policies described  
above
may be changed by the Board of Trustees at any time. If there is a change in 
the
investment  objective,  investors should  consider whether  the Fund  remains 
an
appropriate investment in  light of  their then current  financial position  
and
needs.  (A complete  list of the  investment limitations that  cannot be 
changed
without a  vote of  shareholders is  contained in  the Statement  of  
Additional
Information under "Investment Objective and Policies.")
 
    The Fund may not:
 
        1.   Borrow money except  from banks for temporary  purposes and then 
in
    amounts not exceeding 10%  of the value of  the Fund's assets; or  
mortgage,
    pledge  or  hypothecate  any  assets  except  in  connection  with  any 
such
    borrowing and in amounts not in excess  of the lesser of the dollar  
amounts
    borrowed  or 10% of the value of the Fund's total assets at the time of 
such
    borrowing. Additional investments will not be made when borrowings exceed 
5%
    of the Fund's assets.
 
        2.  Purchase any securities which would  cause 25% or more of the  
value
    of its total assets at the time of purchase to be invested in the 
securities
    of  issuers  conducting  their  principal business  activities  in  the 
same
    industry, provided that there is  no limitation with respect to  
investments
    in U.S. government securities.
 
        3.  Purchase the securities of any issuer if as a result more than 5% 
of
    the  value of the Fund's assets would  be invested in the securities of 
such
    issuer except  that up  to 25%  of the  value of  the Fund's  assets may  
be
    invested  without regard  to this 5%  limitation, provided that  there is 
no
    limitation with respect to investments in U.S. government securities.
 
TYPES OF MUNICIPAL OBLIGATIONS
 
    The two principal classifications of Municipal Obligations which may be 
held
by the  Fund  are  "general obligation"  securities  and  "revenue"  
securities.
General  obligation securities  are secured by  the issuer's pledge  of its 
full
faith, credit  and taxing  power  for the  payment  of principal  and  
interest.
Revenue  securities are payable only from the revenues derived from a 
particular
facility or  class of  facilities or,  in some  cases, from  the proceeds  of  
a
special  excise tax  or other specific  revenue source  such as the  user of 
the
facility being financed. Revenue securities include private activity bonds 
which
are not payable from the unrestricted revenues of the issuer. Consequently,  
the
credit  quality of  private activity  bonds is  usually directly  related to 
the
credit standing of the corporate user of the facility involved.
 
    The Tax Reform  Act of 1986  substantially revised provisions  of prior  
law
affecting  the issuance and use of proceeds of certain tax-exempt obligations. 
A
new definition of  private activity bonds  was applied to  many types of  
bonds,
including  those  which  were  industrial  development  bonds  under  prior 
law.
Interest on private activity bonds is  tax-exempt only if the bonds fall  
within
certain  defined categories  of qualified  private activity  bonds and  meet 
the
requirements specified in those respective categories. The Act generally did 
not
change the tax treatment of bonds issued to finance governmental operations. 
The
changes generally apply to bonds issued after
 
                                       5
<PAGE>
August 15, 1986,  with certain  transitional rule  exemptions. As  used in  
this
Prospectus,   the  term  "private  activity   bonds"  also  includes  
industrial
development revenue bonds issued pursuant to the Internal Revenue Code of  
1986,
as amended.
 
    The  Fund's portfolio may  also include "moral  obligation" bonds, which 
are
normally issued by special  purpose public authorities. If  the issuer of  
moral
obligation  bonds is  unable to meet  its debt service  obligations from 
current
revenues, it may draw  on a reserve  fund, the restoration of  which is a  
moral
commitment but not a legal obligation of the state or municipality which 
created
the issuer.
 
OTHER INVESTMENT PRACTICES
 
    Municipal Obligations purchased by the Fund may include variable rate 
demand
notes.  Such notes may not be rated by credit rating agencies, but unrated 
notes
purchased by the Fund will be determined by the Fund's Investment Adviser to  
be
of  comparable quality at the time  of purchase to rated instruments 
purchasable
by the Fund. Where necessary to ensure that a note is an Eligible Security,  
the
Fund  will require that the issuer's obligation to pay the principal of the 
note
be backed  by  an  conditional bank  letter  or  line of  credit,  guarantee  
or
commitment  to lend. While there may be  no active secondary market with 
respect
to a particular variable rate demand note  purchased by the Fund, the Fund  
may,
upon  the notice specified in  the note, demand payment  of the principal of 
the
note at any  time or  during specified  periods not  exceeding thirteen  
months,
depending upon the instrument involved, and may resell the note at any time to 
a
third  party. The absence of such an active secondary market, however, could, 
in
some instances, make it  difficult for the  Fund to dispose  of a variable  
rate
demand  note if the issuer  were to default on  its payment obligation or 
during
periods that the Fund  is not entitled  to exercise its  demand rights, and  
the
Fund  could, for  this or  other reasons,  suffer a  loss to  the extent  of 
the
default. While, in general, the Fund will invest only in securities that  
mature
within  thirteen months of purchase, the Fund may invest in variable rate 
demand
notes which  have nominal  maturities  in excess  of  thirteen months,  if  
such
instruments carry demand features that comply with conditions established by 
the
Securities and Exchange Commission.
 
    The  Fund may also purchase Municipal  Obligations on a "when-issued" 
basis.
When-issued securities are securities purchased  for delivery beyond the  
normal
settlement date at a stated price and yield. The Fund will generally not pay 
for
such  securities  or start  earning interest  on them  until they  are 
received.
Securities purchased on  a when-issued basis  are recorded as  an asset and  
are
subject  to changes in value based upon changes in the general level of 
interest
rates. The Fund expects that commitments to purchase when-issued securities 
will
not exceed  25%  of  the  value  of  its  total  assets  absent  unusual  
market
conditions.  The Fund  does not  intend to  purchase when-issued  securities 
for
speculative purposes but only in furtherance of its investment objective.
 
    In addition, the  Fund may  acquire "stand-by commitments"  with respect  
to
Municipal  Obligations held  in its  portfolio. Under  a stand-by  commitment, 
a
dealer would  agree  to  purchase  at  the  Fund's  option  specified  
Municipal
Obligations  at a  specified price. The  Fund will  acquire stand-by 
commitments
solely to facilitate  portfolio liquidity and  does not intend  to exercise  
its
rights thereunder for trading purposes.
 
    Although  the  Fund  may invest  more  than 25%  of  its net  assets  in 
(i)
Municipal Obligations whose  issuers are in  the same state  and (ii)  
Municipal
Obligations  the  interest on  which  is paid  solely  from revenues  of 
similar
projects, it does  not presently  intend to  do so on  a regular  basis. To  
the
extent  the Fund's  assets are  concentrated in  Municipal Obligations  that 
are
payable from the revenues of similar projects, are issued by issuers located  
in
 
                                       6
<PAGE>
the  same state or are  private activity bonds, the Fund  will be subject to 
the
peculiar risks presented by  the laws and economic  conditions relating to  
such
states,  projects and bonds to  a greater extent than it  would be if its 
assets
were not so concentrated.
 
    The Fund  may  purchase tender  option  bonds. A  tender  option bond  is  
a
municipal obligation (generally held pursuant to a custodial arrangement) 
having
a  relatively long maturity  and bearing interest at  a fixed rate 
substantially
higher than prevailing short-term tax-exempt  rates, that has been coupled  
with
the agreement of a third party, such as a bank, broker-dealer or other 
financial
institution,  pursuant to which such institution grants the security holders 
the
option, at periodic intervals, to tender their securities to the institution 
and
receive the face value thereof. As  consideration for providing the option,  
the
financial institution receives periodic fees equal to the difference between 
the
municipal  obligation's  fixed coupon  rate  and the  rate,  as determined  by 
a
remarketing or similar agent  at or near the  commencement of such period,  
that
would  cause the securities, coupled with the tender option, to trade at or 
near
par on the  date of such  determination. Thus,  after payment of  this fee,  
the
security holder effectively holds a demand obligation that bears interest at 
the
prevailing  short-term  tax  exempt  rate. The  Fund's  Investment  Adviser 
will
consider on  an  ongoing  basis  the  creditworthiness  of  the  issuer  of  
the
underlying  municipal  obligation,  of  any Custodian  and  of  the  third 
party
provider of  the tender  option. In  certain instances  and for  certain  
tender
option  bonds, the option may be terminable in the event of a default in 
payment
of principal or interest on the  underlying municipal obligations and for  
other
reasons.  Additionally, the  above description of  tender option  bonds is 
meant
only to provide an  example of one possible  structure of such obligations,  
and
the  Fund may  purchase tender option  bonds with different  types of 
ownership,
payment, credit, and/or liquidity arrangement.
 
    The Fund  may acquire  custodial receipts  or certificates  underwritten  
by
securities dealers or banks that evidence ownership of future interest 
payments,
principal payments or both, on certain municipal obligations. The underwriter 
of
these  certificates or  receipts typically  purchases municipal  obligations 
and
deposits the obligations  in an irrevocable  trust or custodial  account with  
a
Custodian  bank,  which  then  issues  receipts  or  certificates  that 
evidence
ownership of  the periodic  unmatured coupon  payments and  the final  
principal
payment on the obligations. Although under the terms of a custodial receipt, 
the
Fund  would be  typically authorized to  assert its rights  directly against 
the
issuer of  the underlying  obligation,  the Fund  could  be required  to  
assert
through  the Custodian  bank those  rights as  may exist  against the 
underlying
issuer. Thus, in the event the  underlying issuer fails to pay principal  
and/or
interest  when due, the Fund  may be subject to  delays, expenses and risks 
that
are greater than those that would have been involved if the Fund had purchased 
a
direct obligation of the  issuer. In addition,  in the event  that the trust  
or
custodial  account  in  which  the underlying  security  has  been  deposited 
is
determined  to  be  an  association  taxable  as  a  corporation  instead  of  
a
non-taxable  entity, the  yield on the  underlying security would  be reduced 
in
recognition of any taxes paid.
 
    The Fund may purchase  from financial institutions tax-exempt  
participation
interests  in Municipal Obligations. A participation  interest gives the Fund 
an
undivided interest in the Municipal Obligation in the proportion that the 
Fund's
participation interest bears to  the total amount  of the Municipal  
Obligation.
These  instruments  may have  floating  or variable  rates  of interest.  If 
the
participation interest is unrated, it will be backed by an irrevocable letter 
of
credit or guarantee of a bank that the Trust's Board of Trustees has  
determined
meets  certain quality  standards or  the payment  obligation otherwise  will 
be
collateralized by  obligations  of the  U.S.  government and  its  agencies  
and
instrumentalities.  The  Fund  will  have the  right,  with  respect  to 
certain
participation
 
                                       7
<PAGE>
interests, to demand payment, on a specified number of days' notice, for all  
or
any  part  of the  Fund's  interest in  the  Municipal Obligation,  plus 
accrued
interest. The  Fund  will  invest  no  more than  5%  of  its  total  assets  
in
participation interests.
 
    The  Fund will not knowingly invest more than  10% of the value of its 
total
net assets in  illiquid securities,  including securities that  are illiquid  
by
virtue  of the  absence of  a readily available  market or  legal or 
contractual
restrictions on resale. Securities that  have legal or contractual  
restrictions
on  resale  but have  a readily  available  market are  not deemed  illiquid 
for
purposes of  this limitation.  The Fund's  Investment Adviser  will monitor  
the
liquidity  of such restricted  securities under the supervision  of the Board 
of
Trustees. See  "Investment Objective  and Policies--Additional  Information  
and
Investment  Practices--Illiquid  Securities"  in  the  Statement  of  
Additional
Information.
 
    The value  of  the Fund's  portfolio  securities  can be  expected  to  
vary
inversely with changes in prevailing interest rates.
 
                       PURCHASE AND REDEMPTION OF SHARES
 
PURCHASE PROCEDURES
 
    Shares  of the Fund  are sold at the  net asset value per  share of the 
Fund
next determined  after  receipt of  a  purchase  order by  Lehman  Brothers  
the
Distributor of the Fund's shares. Purchase orders for shares are accepted by 
the
Fund  only on days on which both Lehman Brothers and the Federal Reserve Bank 
of
Boston are open  for business  and must be  transmitted to  Lehman Brothers,  
by
telephone  at 1-800-851-3134. Orders  received prior to  noon, Eastern time, 
for
which payment  has  been received  by  Boston  Safe Deposit  and  Trust  
Company
("Boston Safe"), the Fund's Custodian, will be executed at noon. Orders 
received
prior  to noon for which payment is received between noon and 4:00 P.M., 
Eastern
time, will be executed at 4:00 P.M.  Orders received after noon, and orders  
for
which  payment has  not been received  by 4:00  P.M., Eastern time,  will not 
be
accepted and notice thereof will be given to the institution placing the  
order.
Payment  for Fund shares may be made only in federal funds immediately 
available
to Boston Safe. (Payment for orders which are not received or accepted by 
Lehman
Brothers will be returned after prompt inquiry to the sending institution.)  
The
Fund  may in its discretion  reject any order for  shares. A salesperson and 
any
other person entitled to receive compensation for selling or servicing shares 
of
the Fund may receive different compensation  for selling or servicing one  
Class
of shares over another Class.
 
    The  minimum initial investment by an institution: $1 million (with not 
less
than $25,000 invested  in any one  investment portfolio offered  by the  
Trust);
however,  broker-dealers  and other  institutional  investors may  set  a 
higher
minimum for their customers. To reach the minimum Trust-wide initial 
investment,
purchases of shares may be aggregated over  a period of six months. There is  
no
minimum subsequent investment.
 
    Conflict  of interest restrictions may apply  to an institution's receipt 
of
compensation paid by the Fund on fiduciary funds that are invested in Class B 
or
Class C  shares.  See  also "Management  of  the  Fund--Service  
Organizations."
Institutions,  including banks regulated by the  Comptroller of the Currency 
and
investment advisers and other money managers subject to the jurisdiction of  
the
Securities  and Exchange Commission, the Department of Labor or state 
securities
commissions, should  consult their  legal  advisors before  investing  
fiduciary
funds in Class B or Class C shares.
 
                                       8
<PAGE>
    SUBACCOUNTING  SERVICES.  Institutions are  encouraged to open single 
master
accounts. However, certain  institutions may  wish to use  the Transfer  
Agent's
subaccounting  system to minimize their internal recordkeeping requirements. 
The
Transfer Agent  charges a  fee  based on  the  level of  subaccounting  
services
rendered.  Institutions holding Fund shares in a fiduciary, agency, custodial 
or
similar capacity may charge or pass through subaccounting fees as part of or  
in
addition  to normal trust or agency account  fees. They may also charge fees 
for
other services provided which  may be related to  the ownership of Fund  
shares.
This  Prospectus should, therefore, be read  together with any agreement 
between
the customer and the institution with regard to the services provided, the  
fees
charged for those services and any restrictions and limitations imposed.
 
REDEMPTION PROCEDURES
 
    Redemption  orders must  be transmitted to  Lehman Brothers  by telephone 
at
1-800-851-3134. Payment  for redeemed  shares for  which a  redemption order  
is
received by Lehman Brothers before noon, Eastern time, on a day that both 
Lehman
Brothers  and  the Federal  Reserve  Bank of  Boston  are open  for  business 
is
normally made in federal  funds wired to the  redeeming shareholder on the  
same
business  day.  Payment for  redeemed  shares for  which  a redemption  order 
is
received by Lehman Brothers after noon, Eastern time, on such a business day  
is
normally  made in federal funds  wired to the redeeming  shareholder on the 
next
business day following redemption.
 
    Shares are redeemed at the net  asset value per share next determined  
after
Lehman  Brothers' receipt of the redemption order. While the Fund intends to 
use
its best  efforts to  maintain  its net  asset value  per  share at  $1.00,  
the
proceeds paid to an investor upon redemption may be more or less than the 
amount
invested  depending upon a share's net asset value at the time of redemption. 
To
allow the Fund's Investment  Adviser to manage  the Fund effectively,  
investors
are  strongly urged to initiate all investments or redemptions of Fund shares 
as
early in the day as possible and to  notify Lehman Brothers at least one day  
in
advance of transactions in excess of $5 million.
 
    The  Fund reserves the  right to wire redemption  proceeds within seven 
days
after receiving  the redemption  order if,  in the  judgment of  the  
Investment
Adviser, an earlier payment could adversely affect the Fund. The Fund shall 
have
the  right to redeem shares involuntarily in  any account at its net asset 
value
if the value of the  account is less than $10,000  after 60 days' prior  
written
notice  to the investor. Any such redemption  shall be effected at the net 
asset
value per share next determined after the redemption order is entered. If 
during
the 60-day period the investor increases the value of its account to $10,000  
or
more,  no such  redemption shall  take place. In  addition, the  Fund may 
redeem
shares involuntarily or suspend the right  of redemption as permitted under  
the
Investment  Company Act of 1940,  as amended (the "1940  Act"), or under 
certain
special circumstances described in the Statement of Additional Information 
under
"Additional Purchase and Redemption Information."
 
VALUATION OF SHARES--NET ASSET VALUE
 
    The Fund's net asset  value per share for  purposes of pricing purchase  
and
redemption  orders is determined by the Fund's Administrator as of noon and 
4:00
P.M., Eastern time,  on each weekday,  with the exception  of those holidays  
on
which  either Lehman Brothers or  the Federal Reserve Bank  of Boston is 
closed.
Currently, one  or  both of  these  institutions  are closed  on  the  
customary
national business holidays of New Year's Day, Martin Luther King, Jr.'s 
Birthday
(observed),  Presidents' Day (Washington's Birthday), Good Friday, Memorial 
Day,
Independence Day, Labor Day, Columbus Day (observed), Veterans Day, 
Thanksgiving
Day and Christmas Day,
 
                                       9
<PAGE>
and on the  preceeding Friday or  subsequent Monday when  one of these  
holidays
falls  on a Saturday or  Sunday, respectively. The net  asset value per share 
of
the Fund is calculated by adding the value of all securities and other assets 
of
the Fund, subtracting liabilities and dividing the result by the total number 
of
the Fund's outstanding shares. In computing  net asset value, the Fund uses  
the
amortized  cost method of valuation as  described in the Statement of 
Additional
Information under "Additional Purchase  and Redemption Information." The  
Fund's
net asset value per share for purposes of pricing purchase and redemption 
orders
is determined independently of the net asset values of the shares in the 
Trust's
other investment portfolios.
 
OTHER MATTERS
 
    Fund  shares are sold and redeemed without charge by the Fund. 
Institutional
investors purchasing or holding  Fund shares for  their customers' accounts  
may
charge  customers  fees  for  cash management  and  other  services  provided 
in
connection with their accounts. A customer should, therefore, consider the 
terms
of its account with an institution before purchasing Fund shares. An 
institution
purchasing or redeeming  shares on behalf  of its customers  is responsible  
for
transmitting   orders  to  Lehman  Brothers  in  accordance  with  its  
customer
agreements.
 
                                   DIVIDENDS
 
    **1 Investors  of  the Fund  are  entitled to  dividends  and  
distributions
arising only from the net investment income and capital gains, if any, earned 
on
its  investments held by the Fund. The  Fund's net investment income is 
declared
daily as a dividend to  shareholders of record at the  close of business on  
the
day  of declaration. Dividends are determined in the same manner and are paid 
in
the same amount for each  share of the Fund  irrespective of class, except  
that
Class  B  or  Class C  shares  bear all  the  expense  of fees  paid  to 
Service
Organizations. Shares begin accruing dividends on the day the purchase order 
for
the shares is  effected and continue  to accrue dividends  through the day  
such
shares  are redeemed. Dividends  are paid monthly by  wire transfer, within 
five
business days after the end  of the month or within  five business days after  
a
redemption of all of a shareholder's shares of a particular class. The Fund 
does
not expect to realize net long-term capital gains.
 
    Institutional  investors  may elect  to have  their dividends  reinvested 
in
additional full and fractional shares of the  same class at the net asset  
value
of  such shares on the  payment date. Reinvested dividends  receive the same 
tax
treatment as dividends paid in cash.  Such election, or any revocation  
thereof,
must  be made in  writing to the  Fund's Distributor, 260  Franklin Street, 
15th
Floor, Boston, Massachusetts  02110-9624, and  will become  effective after  
its
receipt by the Distributor with respect to dividends paid.
 
    The  Shareholder Services Group, Inc. ("TSSG"), as Transfer Agent, will 
send
each investor  or its  authorized representative,  if any,  an annual  
statement
designating  the amount  of any dividends  and capital  gains distributions 
made
during each year and their federal tax qualification.
 
                                     TAXES
 
    **2 The Fund qualified in  its last taxable year  and intends to qualify  
in
future years as a "regulated investment company" under the Internal Revenue 
Code
of  1986, as amended (the "Code"). A regulated investment company is exempt 
from
federal income tax on amounts distributed to its shareholders.
 
                                       10
<PAGE>
    **3 Qualification as  a regulated investment  company under the  Code for  
a
taxable  year  requires, among  other things,  that the  Fund distribute  to 
its
investors at least 90% of its  exempt-interest income net of certain  
deductions
and  90%  of its  investment  company taxable  income  for such  year. 
Dividends
derived from exempt-interest income  may be treated by  the Fund's investors  
as
items of interest excludable from their gross income under Section 103(a) of 
the
Code,  unless under the circumstances applicable  to the particular investor 
the
exclusion would  be disallowed.  (See the  Statement of  Additional  
Information
under "Additional Information Concerning Taxes.")
 
    **4  The Fund may  hold without limit certain  private activity bonds 
issued
after August 7, 1986. Investors must include, as an item of tax preference,  
the
portion  of dividends paid by the Fund  that is attributable to interest on 
such
bonds in  their  federal alternative  minimum  taxable income  for  purposes  
of
determining liability (if any) for the 24% alternative minimum tax applicable 
to
individuals  and  the  20% alternative  minimum  tax and  the  environmental 
tax
applicable  to   corporations.   Corporate   investors  must   also   take   
all
exempt-interest  dividends into  account in determining  certain adjustments 
for
federal alternative minimum  and environmental tax  purposes. The  
environmental
tax  applicable to corporations is imposed at the  rate of .12% on the excess 
of
the corporation's  modified  federal  alternative minimum  taxable  income  
over
$2,000,000.  Investors receiving Social  Security benefits should  note that 
all
exempt-interest  dividends  will  be  taken  into  account  in  determining  
the
taxability of such benefits.
 
    **5  To the extent, if any, dividends  paid to shareholders are derived 
from
taxable income or  from long-term  or short-term capital  gains, such  
dividends
will  not be exempt from federal income  tax, whether such dividends are paid 
in
the form of  cash or additional  shares, and may  also be subject  to state  
and
local  taxes.  Under  state  or  local  law,  the  Fund's  distributions  of 
net
investment income may be taxable to  investors as dividend income even though  
a
substantial  portion  of  such distributions  may  be derived  from  interest 
on
tax-exempt obligations which, if  realized directly, would  be exempt from  
such
income taxes.
 
    **6  Dividends declared in October, November or December of any year 
payable
to shareholders of record on a specified  date in such months will be deemed  
to
have  been received by the  shareholders and paid by the  Fund on December 31 
of
such year in the event  such dividends are actually  paid during January of  
the
following year.
 
    **7 Investors will be advised at least annually as to the federal income 
tax
consequences of distributions made each year.
 
    **8  The foregoing is only a brief  summary of some of the important 
federal
tax considerations generally affecting the Fund and its investors. No attempt 
is
made to present a detailed explanation of the federal, state or local income 
tax
treatment of the Fund or its investors, and this discussion is not intended as 
a
substitute for careful  tax planning.  Accordingly, potential  investors in  
the
Fund  should consult their tax advisors with specific reference to their own 
tax
situation.
 
                             MANAGEMENT OF THE FUND
 
    The business and affairs of the Fund are managed under the direction of  
the
Trust's  Board  of Trustees.  The  Trustees approve  all  significant 
agreements
between the Trust  and the  persons or companies  that furnish  services to  
the
Fund,   including   agreements   with  its   Distributor,   Investment  
Adviser,
Administrator, Custodian
 
                                       11
<PAGE>
and Transfer Agent. The day-to-day operations  of the Fund are delegated to  
the
Fund's  Investment  Adviser  and  Administrator.  The  Statement  of  
Additional
Information  relating  to  the  Fund  contains  general  background  
information
regarding each Trustee and executive officer of the Trust.
 
DISTRIBUTOR
 
    Lehman  Brothers, located  at 3 World  Financial Center, New  York, New 
York
10285, is the Distributor of the Fund's shares. Lehman Brothers, a leading  
full
service  investment  firm, meets  the  diverse financial  needs  of 
individuals,
institutions and governments around the world. Lehman Brothers has entered  
into
a   Distribution  Agreement  with  the  Trust  pursuant  to  which  it  has  
the
responsibility for distributing shares of the Fund.
 
INVESTMENT ADVISER--LEHMAN BROTHERS GLOBAL ASSET MANAGEMENT INC.
 
    Lehman Brothers Global Asset Management  Inc. ("LBGAM"), located at 3  
World
Financial  Center, New  York, New  York 10285,  serves as  the Fund's 
Investment
Adviser. Lehman Global Asset Management is  a wholly owned subsidiary of  
Lehman
Brothers  Holdings Inc. ("Holdings"). LBGAM, together with other Lehman 
Brothers
investment advisory  affiliates,  serves  as Investment  Advisor  to  
investment
companies  private accounts and  has assets under management  in excess of 
[$15]
billion as of          , 1994.
 
    As  Investment  Adviser  to  the  Fund,  LBGAM  will  among  other   
things,
participate  in  the  formulation  of the  Fund's  investment  policies, 
analyze
economic  trends  affecting  the  Fund  and  monitor  and  evaluate  the  
Fund's
investment objective and policies and the Fund's investment performance. For 
its
services  LBGAM is entitled to receive a monthly fee from the Fund at the 
annual
rate of .10% of the value of the Fund's average daily net assets. For the 
period
February 8,  1993  (commencement  of  operations) to  January  31,  1994,  
LBGAM
received  an advisory fee from the  Fund in the amount of     % of average 
daily
net assets.
 
ADMINISTRATOR AND TRANSFER AGENT--THE SHAREHOLDER SERVICES GROUP, INC.
 
    The Shareholder  Services  Group, Inc.  ("TSSG"),  located at  One  
Exchange
Place,  53  State  Street, Boston,  Massachusetts  02109, serves  as  the 
Fund's
Administrator and Transfer  Agent. TSSG is  a wholly owned  subsidiary of  
First
Data  Corporation. As Administrator, TSSG calculates  the net asset value of 
the
Fund's shares and generally assists in all aspects of the Fund's  
administration
and  operation. As  compensation for TSSG's  services as  Administrator, TSSG 
is
entitled to receive from the  Fund a monthly fee at  the annual rate of .10%  
of
the  value of  the Fund's  average daily  net assets.  TSSG is  also entitled 
to
receive a fee from the Fund for its services as Transfer Agent. TSSG pays 
Boston
Safe, the Fund's  Custodian, a  portion of  its monthly  administration fee  
for
custody services rendered to the Fund.
 
CUSTODIAN--BOSTON SAFE DEPOSIT AND TRUST COMPANY
 
    Boston  Safe, a wholly owned subsidiary of The Boston Company, Inc., 
located
at  One  Boston  Place,  Boston,  Massachusetts  02108,  serves  as  the  
Fund's
Custodian.
 
SERVICE ORGANIZATIONS
 
    Financial  institutions  such as  banks, savings  and loan  associations 
and
other such institutions ("Service Organizations") and/or institutional 
customers
of Service Organizations may  purchase Class B or  Class C shares. These  
shares
are  identical in all respects to Class A  shares except that they bear the 
fees
described below and enjoy certain exclusive voting rights on matters relating 
to
these fees. The Fund will enter into an agreement with each Service 
Organization
whose customers ("Customers") are  the beneficial owners of  Class B or Class  
C
shares  that requires  the Service Organization  to provide  certain services 
to
Customers in consideration of the
 
                                       12
<PAGE>
Fund's payment of service fees at the annual rate of .25% or .35%, 
respectively,
of the average daily net asset value of the respective Class beneficially  
owned
by the Customers. Such services, which are described more fully in the 
Statement
of   Additional  Information  under   "Management  of  the   Fund's  is  
Service
Organizations," may include aggregating  and processing purchase and  
redemption
requests  from Customers  and placing  net purchase  and redemption  orders 
with
Lehman Brothers;  processing  dividend  payments  from the  Fund  on  behalf  
of
Customers;   providing  information  periodically  to  Customers  showing  
their
positions in shares; arranging for bank wires; responding to Customer  
inquiries
relating  to  the services  provided by  the  Service Organization  and 
handling
correspondence; acting  as  shareholder of  record  and nominee;  and  
providing
reasonable   assistance  in  connection  with  the  distribution  of  shares  
to
Customers. Services provided with  respect to Class B  shares will generally  
be
more limited than those provided with respect to Class C Shares. Under the 
terms
of  the  agreements,  Service Organizations  are  required to  provide  to 
their
Customers a schedule of  any fees that they  may charge Customers in  
connection
with  their investments in Class B or Class C shares. Class A shares are sold 
to
financial institutions that have not entered into servicing agreements with  
the
Fund in connection with their investments.
 
EXPENSES
 
    The  Fund bears all of its own  expenses. The Fund's expenses include 
taxes,
interest, fees and  salaries of the  Trust's trustees and  officers who are  
not
directors,  officers or employees of  the Fund's service contractors, 
Securities
and Exchange  Commission fees,  state securities  qualification fees,  costs  
of
preparing and printing prospectuses for regulatory purposes and for 
distribution
to  investors,  advisory  and  administration fees,  charges  of  the 
custodian,
transfer agent and dividend disbursing agent, Service Organization fees, 
certain
insurance premiums, outside  auditing and legal  expenses, costs of  
shareholder
reports  and shareholder meetings and any  extraordinary expenses. The Fund 
also
pays for brokerage fees and commissions (if any) in connection with the 
purchase
and sale of  portfolio securities. In  order to maintain  a competitive  
expense
ratio  during 1994; LBGAM and TSSG have agreed voluntarily to reimburse the 
Fund
if and to the extent that the Fund's total operating expenses (other than 
taxes,
interest, brokerage fees and commissions, Rule 12b-1 fees under the 1940 Act 
and
extraordinary expenses) exceed .16% of average daily net assets through 
December
31,  1994.  The  Investment  Adviser   and  Administrator  intend  to   
continue
voluntarily  to  reimburse  the Fund  to  the  extent necessary  to  maintain 
an
annualized expense ratio at a  level no greater than  .18% of average daily  
net
assets  thereafter.  This voluntary  reimbursement  will not  be  changed 
unless
investors are provided  at least  60 days'  advance notice.  In addition,  
these
service  providers have agreed to  reimburse the Fund to  the extent required 
by
applicable state law for certain expenses that are described in the Statement 
of
Additional Information  relating  to  the  Fund. Any  fees  charged  by  
Service
Organizations  or other institutional investors to their customers in 
connection
with investments in Fund shares are not reflected in the Fund's expenses.
 
    *1 moved from here; text not shown
 
                                     YIELDS
 
    From time to time, the "yields," and "effective yields" for Class A, Class 
B
or Class C shares may  be quoted in advertisements  or in reports to  
investors.
Yield  quotations are computed separately for  each Class of shares. The 
"yield"
quoted in advertisements  for each  a particular  class or  sub-class of  
shares
refers  to the income generated by an investment in such shares over a 
specified
period (such as a seven-day period specified in the advertisement). This  
income
is  then "annualized"; that is, the amount of income generated by the 
investment
 
                                       13
<PAGE>
during that week is assumed to be generated each week over a 52-week or one 
year
period and is shown as a percentage of the investment. The "effective yield"  
is
calculated similarly but, when annualized, the income earned by an investment 
in
a  particular Class of Fund  shares is assumed to  be reinvested. The 
"effective
yield" will  be slightly  higher than  the "yield"  because of  the  
compounding
effect of this assumed reinvestment. The "tax-equivalent yield" demonstrates 
the
level of taxable yield necessary to produce an after-tax yield equivalent to 
the
Fund's  tax-free yield for each Class of  shares. It is calculated by 
increasing
the yield (calculated as above) by  the amount necessary to reflect the  
payment
of  federal taxes at  a stated rate.  The "tax-equivalent yield"  will always 
be
higher than the "yield."
 
    The Fund's  yields may  be compared  to  those of  other mutual  funds  
with
similar  objectives, to bond or other  relevant indices, or to rankings 
prepared
by independent services or other financial or industry publications that 
monitor
the performance of mutual funds. For example, such data are reported in 
national
financial publications  such as  IBC/DONOGHUE'S MONEY  FUND REPORT-R-,  
IBBOTSON
ASSOCIATES  OF CHICAGO, THE WALL STREET JOURNAL  and THE NEW YORK TIMES, 
reports
prepared by LIPPER  ANALYTICAL SERVICES,  INC. and  publications of  a local  
or
regional nature.
 
    THE  FUND'S YIELD FIGURES FOR A  CLASS OF SHARES REPRESENT PAST 
PERFORMANCE,
WILL FLUCTUATE AND SHOULD NOT BE CONSIDERED AS REPRESENTATIVE OF FUTURE 
RESULTS.
The yield of  any investment is  generally a function  of portfolio quality  
and
maturity,  type of investment  and operating expenses. Since  holders of Class 
B
and Class  C shares  bear the  service  fees for  services provided  by  
Service
Organizations, the net yield on such shares can be expected at any given time 
to
be  lower than  the net  yield on Class  A shares.  Any fees  charged by 
Service
Organizations or other  institutional investors directly  to their customers  
in
connection  with  investments in  Fund shares  are not  reflected in  the 
Fund's
expenses or yields. The methods used to compute the Fund's yields are  
described
in  more detail in  the Statement of Additional  Information. Investors may 
call
1-800-238-2560 (Class A  shares code:  009; Class B  shares code:  109; Class  
C
shares code: 209) to obtain current yield information.
 
    The  yield for  Class A, Class  B and  Class C shares  for the  Fund for 
the
seven-day period ended January 31, 1994 were   %,   % and   % respectively.
 
                             DESCRIPTION OF SHARES
 
    *2 moved from here; text not shown
 
    *3 moved from here; text not shown
 
    *4 moved from here; text not shown
 
    *5 moved from here; text not shown
 
    *6 moved from here; text not shown
 
    *7 moved from here; text not shown
 
    *8 moved from here; text not shown
 
    The Trust was organized  as a Massachusetts business  trust on November  
25,
1992.
 
    The  Trust's Declaration of Trust authorizes  the Board of Trustees to 
issue
an unlimited number of full and fractional shares of beneficial interest in  
the
Trust   and  to  classify  or  reclassify   any  unissued  shares  into  one  
or
 
                                       14
<PAGE>
more classes of shares. The Trust is an open-end management investment  
company,
which  offers twelve portfolios; Prime  Money Market Fund (Class  A, Class B 
and
Class C), Prime Value Money Market Fund (Class A, Class B, Class C and Class 
D),
Government Obligations Money Market  Fund (Class A, Class  B, Class C and  
Class
D),  100% Government Obligations Money  Market Fund (Class A,  Class B and 
Class
C), Treasury Instruments Money Market  Fund II (Class A,  Class B and Class  
C),
100%  Treasury Instruments  Money Market  Fund (Class A,  Class B  and Class 
C),
Tax-Free Money  Market Fund  (Class A,  Class B  and Class  C), Municipal  
Money
Market  Fund (Class A, Class B, Class C and Class D), California Municipal 
Money
Market Fund (Class A, Class B and Class C), New York Municipal Money Market 
Fund
(Class A, Class B and Class C), Floating Rate U.S. Government Fund (Class A  
and
Class  B) and Short Duration U.S. Government  Fund (Class A and Class B). 
Shares
of the  New York  Municipal Money  Market Fund  are not  currently sold  to  
the
public.  The Declaration of Trust further authorizes the trustees to classify 
or
reclassify any class of shares into one or more sub-classes.
 
    THIS PROSPECTUS  AND THE  STATEMENT OF  ADDITIONAL INFORMATION  
INCORPORATED
HEREIN  RELATE PRIMARILY TO THE FUND  AND DESCRIBE ONLY THE INVESTMENT 
OBJECTIVE
AND POLICIES,  OPERATIONS, CONTRACTS  AND OTHER  MATTERS RELATING  TO THE  
FUND.
INVESTORS  WISHING  TO OBTAIN  SIMILAR INFORMATION  REGARDING THE  TRUST'S 
OTHER
PORTFOLIOS MAY OBTAIN SEPARATE PROSPECTUSES DESCRIBING THEM BY CONTACTING 
LEHMAN
BROTHERS AT 1-800-368-5556.
 
    The Trust does not intend to hold annual meetings of shareholders except  
as
required  by the 1940 Act or other applicable law. The Trust will call a 
meeting
of shareholders for  the purpose of  voting upon  the question of  removal of  
a
member  of the Board of Trustees upon  written request of shareholders owning 
at
least 10% of the outstanding shares of the Trust entitled to vote.
 
    Each Fund share  represents an  equal proportionate interest  in the  
assets
belonging  to the  Fund. Each  share, which  has a  par value  of $.001,  has 
no
preemptive or conversion rights.  When issued for payment  as described in  
this
Prospectus, shares will be fully paid and non-assessable.
 
    Holders  of the Fund's shares will vote in the aggregate and not by class 
on
all matters, except where otherwise required by law and except that only Class 
B
or Class C  shares, as  the case may  be, will  be entitled to  vote on  
matters
submitted  to a vote of shareholders  pertaining to the Fund's arrangements 
with
Service Organizations with respect to the relevant Class. Further,  
shareholders
of all of the Trust's portfolios will vote in the aggregate and not by 
portfolio
except  as otherwise required  by law or  when the Board  of Trustees 
determines
that the matter to be voted upon affects only the interests of the  
shareholders
of  a particular portfolio.  (See the Statement  of Additional Information 
under
"Additional Description Concerning Fund Shares" for examples where the 1940  
Act
requires  voting by  portfolio.) Shareholders of  the Trust are  entitled to 
one
vote for  each  full  share  held  (irrespective  of  class  or  portfolio)  
and
fractional  votes for fractional shares held.  Voting rights are not 
cumulative,
and, accordingly, the holders of  more than 50% of  the aggregate shares of  
the
Trust may elect all of the trustees.
 
    For  information  concerning  the  redemption of  Fund  shares  and 
possible
restrictions on their transferability, see "Purchase and Redemption of 
Shares."
 
                                       15
<PAGE>
                LEHMAN BROTHERS INSTITUTIONAL FUNDS GROUP TRUST
 
                            Prime Money Market Fund
                         Prime Value Money Market Fund
                    Government Obligations Money Market Fund
                 100% Government Obligations Money Market Fund
                     Treasury Instruments Money Market Fund
                  100% Treasury Instruments Money Market Fund
                          Municipal Money Market Fund
                           Tax-Free Money Market Fund
                     California Municipal Money Market Fund
                      New York Municipal Money Market Fund
                            ------------------------
 
                       Floating Rate U.S. Government Fund
                      Short Duration U.S. Government Fund
 
                            ------------------------
 
NO  PERSON  HAS  BEEN  AUTHORIZED  TO  GIVE  ANY  INFORMATION  OR  TO  MAKE  
ANY
REPRESENTATIONS NOT CONTAINED IN THIS PROSPECTUS, OR IN THE FUND'S STATEMENT  
OF
ADDITIONAL  INFORMATION INCORPORATED HEREIN BY REFERENCE, IN CONNECTION WITH 
THE
OFFERING MADE BY  THIS PROSPECTUS  AND, IF GIVEN  OR MADE,  SUCH INFORMATION  
OR
REPRESENTATIONS  MUST NOT BE RELIED UPON AS  HAVING BEEN AUTHORIZED BY THE 
TRUST
OR ITS DISTRIBUTOR. THIS PROSPECTUS DOES NOT CONSTITUTE AN OFFERING BY THE 
TRUST
OR BY  THE  DISTRIBUTOR IN  ANY  JURISDICTION IN  WHICH  SUCH OFFERING  MAY  
NOT
LAWFULLY BE MADE.
 
                              -------------------
 
                               TABLE OF CONTENTS
 
<TABLE>
<CAPTION>
                                              PAGE
                                            ---------
<S>                                         <C>
Background and Expense Information........          2
Financial Highlights......................          3
Investment Objective and Policies.........          4
Purchase and Redemption of Shares.........          8
Dividends.................................         10
Taxes.....................................         10
Management of the Fund....................         11
Yields....................................         13
Description of Shares.....................         14
</TABLE>
 
                                   MUNICIPAL
                               MONEY MARKET FUND
 
                              -------------------
 
                                   PROSPECTUS
                                  May   , 1994
 
                             ---------------------
 
                                LEHMAN BROTHERS
 
THIS PROSPECTUS AND THE STATEMENT OF ADDITIONAL INFORMATION INCORPORATED 
HEREIN
  RELATE PRIMARILY TO THE FUND AND DESCRIBE ONLY THE INVESTMENT OBJECTIVE AND
    POLICIES, OPERATIONS, CONTRACTS AND OTHER MATTERS RELATING TO THE FUND.
  INVESTORS WISHING TO OBTAIN SIMILAR INFORMATION REGARDING THE TRUST'S OTHER
PORTFOLIOS MAY OBTAIN SEPARATE PROSPECTUSES DESCRIBING THEM BY CONTACTING 
LEHMAN
                          BROTHERS AT 1-800-368-5556.


<PAGE>
PROSPECTUS
 
                    GOVERNMENT OBLIGATIONS MONEY MARKET FUND
 
                       An Investment Portfolio Offered By
                Lehman Brothers Institutional Funds Group Trust
 
   
    Lehman  Brothers Institutional Funds Group Trust (the "Trust") is a no-
load,
open-end management investment company. The shares described in this  
Prospectus
represent  interests in the  Government Obligations Money  Market Fund 
portfolio
(the "Fund"), one of a family of money market portfolios of the Trust.
    
   
    The Fund's  INVESTMENT  OBJECTIVE  is  current  income  with  liquidity  
and
security  of  principal. The  Fund  invests in  a  portfolio consisting  of 
U.S.
Treasury bills, notes  and other obligations  issued or guaranteed  by the  
U.S.
government, its agencies or instrumentalities and repurchase agreements 
relating
to such obligations.
    
 
   
    Fund  shares may not be purchased by individuals directly, but 
institutional
investors may purchase shares for  accounts maintained by individuals. The  
Fund
currently  offers  three  classes of  shares.  In  addition to  Class  A 
shares,
institutional investors may  purchase on behalf  of their customers  Class B  
or
Class C shares which accrue daily dividends in the same manner as Class A 
shares
but  bear all fees  payable by the  Fund to institutional  investors for 
certain
services they provide to the beneficial  owners of such shares. See  
"Management
of the Fund--Service Organizations."
    
   
    AN  INVESTMENT IN  THE FUND  IS NEITHER INSURED  NOR GUARANTEED  BY THE 
U.S.
GOVERNMENT. THERE CAN BE NO ASSURANCE THAT THE FUND WILL BE ABLE TO MAINTAIN 
ITS
NET ASSET VALUE OF $1.00 PER SHARE.
    
   
    LEHMAN BROTHERS,  INC. ("LEHMAN  BROTHERS") sponsors  the Fund  and acts  
as
Distributor  of its shares. LEHMAN BROTHERS  GLOBAL ASSET MANAGEMENT INC. 
serves
as the Fund's Investment Adviser.
    
 
   
    The address of the Fund is One Exchange Place, Boston, Massachusetts  
02019.
The  Fund can be contacted  as follows: for purchase  and redemption orders 
only
call 1-800-851-3134; for yield information  call 1-800-238-2560 (Class A  
shares
code:  003;  Class B  shares code:  103; Class  C shares  code: 203);  for 
other
information call 1-800-368-5556.
    
   
    This Prospectus briefly sets forth  certain information about the Fund  
that
investors  should  know before  investing. Investors  are  advised to  read 
this
Prospectus and retain it for future reference. Additional information about  
the
Fund,  contained in a Statement of Additional Information dated May __, 1994, 
as
amended or supplemented from  time to time, has  been filed with the  
Securities
and  Exchange Commission and is available to investors without charge by 
calling
the  Fund's  Distributor   at  1-800-368-5556.  The   Statement  of   
Additional
Information is incorporated in its entirety by reference into this Prospectus.
    
 
   
    SHARES  OF THE  FUND ARE  NOT DEPOSITS OR  OBLIGATIONS OF,  OR GUARANTEED 
OR
ENDORSED BY, ANY BANK, AND SUCH SHARES ARE NOT FEDERALLY INSURED BY THE  
FEDERAL
DEPOSIT INSURANCE CORPORATION, THE FEDERAL RESERVE BOARD OR ANY OTHER 
GOVERNMENT
AGENCY.  SHARES  OF THE  FUND INVOLVE  CERTAIN  INVESTMENT RISKS,  INCLUDING 
THE
POSSIBLE LOSS OF PRINCIPAL.
    
                           --------------------------
 
THESE SECURITIES HAVE  NOT BEEN APPROVED  OR DISAPPROVED BY  THE SECURITIES  
AND
  EXCHANGE   COMMISSION  OR  ANY  STATE  SECURITIES  COMMISSION  NOR  HAS  THE
    SECURITIES AND EXCHANGE  COMMISSION OR ANY  STATE SECURITIES  COMMISSION
      PASSED  UPON  THE  ACCURACY  OR  ADEQUACY  OF  THIS  PROSPECTUS. ANY
                REPRESENTATION TO THE CONTRARY IS A CRIMINAL OFFENSE.
                           --------------------------
 
                                LEHMAN BROTHERS
 
   
May __, 1994
    
<PAGE>
                       BACKGROUND AND EXPENSE INFORMATION
 
   
    The  following Expense Summary lists the costs and expenses that an 
investor
in the Fund can  expect to incur  during the Fund's  current fiscal year  
ending
January  31, 1995. The Fund  offers three separate classes  of shares. Shares 
of
each class represent  equal, pro  rata interests in  the Fund  and accrue  
daily
dividends  in the same manner  except that Class B and  Class C shares bear 
fees
payable by the Fund (at  the rate of .25% and  .35% per annum, respectively)  
to
institutions  for services they provide to the beneficial owners of such 
shares.
See "Management of the Fund--Service Organizations."
    
 
EXPENSE SUMMARY
 
   
<TABLE>
<CAPTION>
                                        CLASS A CLASS B CLASS C
                                        SHARES  SHARES  SHARES
                                        ------- ------- -------
<S>                                     <C>     <C>     <C>
ANNUAL FUND OPERATING EXPENSES
 (as a percentage of average net assets)
    Advisory Fees (net of applicable fee
     waivers)...........................  0.09%*  0.09%*  0.09%*
    Rule 12b-1 fees.....................  none    .25%    .35%
    Other Expenses--including
     Administration Fees................  0.06%*  0.06%*  0.06%*
                                        ------- ------- -------
    Total Fund Operating Expenses (after
     fee waivers*)......................   .16%   .41%    .51%
                                        ------- ------- -------
                                        ------- ------- -------
<FN>
---------
* The Expense Summary above has  been restated to reflect the Fund's  
Investment
  Adviser's  and Administrator's voluntary  reimbursement arrangements in 
effect
  for the Fund's fiscal year ending January  31, 1995. With respect to Class  
A,
  Class  B and  Class C shares  for the month  of January, 1995,  the Total 
Fund
  Operating Expenses including reimbursement of  expenses are anticipated to  
be
  .18%, .43%, and .53%, respectively.
</TABLE>
    
 
   
    In  order to  maintain a competitive  expense ratio during  1994, the 
Fund's
Investment Adviser and  Administrator have voluntarily  agreed to reimburse  
the
Fund  if and  to the  extent that  total operating  expenses (other  than 
taxes,
interest, brokerage  fees and  commissions, Rule  12b-1 fees  and  
extraordinary
expenses) exceed .16% of average daily net assets through December 31, 1994. 
For
the years 1995-1997, the Investment Adviser and Administrator intend to 
continue
voluntarily  to  reimburse  the Fund  to  the  extent necessary  to  maintain 
an
annualized expense ratio at a  level no greater than  .18% of average daily  
net
assets.  The voluntary  reimbursement arrangements  described above  will not 
be
changed unless shareholders are provided at  least 60 days' advance notice.  
The
maximum   annual  contractual  fees  payable   to  the  Investment  Adviser  
and
Administrator total .20% of  average daily net  assets. Absent reimbursement  
of
expenses,  the Total  Fund Operating Expenses  of Class  A, Class B  and Class 
C
would be .25%,  .50% and  .60%, respectively, of  the Fund's  average daily  
net
assets.
    
---------
   
EXAMPLE:  An investor would  pay the following expenses  on a $1,000 
investment,
assuming (1) a  5% annual  return and  (2) redemption at  the end  of each  
time
period with respect to the following shares:
    
 
   
<TABLE>
<CAPTION>
                                1 YEAR   3 YEARS   5 YEARS   10 YEARS
<S>                             <C>      <C>       <C>       <C>
Class A shares:...............    $  2     $   5     $   9     $   20
Class B shares:...............    $  4     $  13     $  23     $   52
Class C shares:...............    $  5     $  16     $  29     $   64
</TABLE>
    
 
   
THE  FOREGOING SHOULD NOT BE CONSIDERED  A REPRESENTATION OF ACTUAL EXPENSES 
AND
RATES OF RETURN, WHICH MAY BE GREATER OR LESSER THAN THOSE SHOWN.
    
 
                                       2
<PAGE>
   
    The purpose of the foregoing table is to assist an investor in 
understanding
the various costs and expenses that an  investor in the Fund will bear  
directly
or  indirectly. Certain Service Organizations (as defined below) also may 
charge
their clients fees in connection with investments in Fund shares, which fees 
are
not reflected in the table. For more complete descriptions of the various  
costs
and  expenses, see "Management of the Fund" in this Prospectus and the 
Statement
of Additional Information.
    
 
   
                              FINANCIAL HIGHLIGHTS
    
 
   
    The following financial  highlights for  the fiscal year  ended January  
31,
1994  is derived from the Fund's Financial  Statements audited by Ernst & 
Young,
independent accountants. This information should be read in conjunction with 
the
financial  statements  and  notes  thereto  that  appear  in  the  Statement  
of
Additional Information.
    
 
   
                    GOVERNMENT OBLIGATIONS MONEY MARKET FUND
    
 
   
<TABLE>
<CAPTION>
                                                                   PERIOD 
ENDED  PERIOD ENDED
                                                                     1/31/94*      
1/31/94*
                                                                      CLASS A       
CLASS B
<S>                                                                <C>           
<C>
Net asset value, beginning of period...............................        
$1.00       $1.00
Net investment income(1)...........................................      
0.0309       0.0091
Dividends from net investment income...............................     
(0.0309)     (0.0091)
Net asset value, end of period.....................................       
$1.00        $1.00
Total return(2)....................................................        
3.14%        0.90%
Ratios to average net assets/supplemental data:
Net assets, end of period (in 000's)...............................     
$350,666          --(3)
Ratio of net investment income to average net assets...............        
3.18%        2.93%
Ratio of operating expenses to average net assets(5)...............        
0.03%        0.28%
<FN>
---------
*     The  Government Obligations Money  Market Fund Class A  and Class B 
Shares
      commenced operations on February 8, 1993, August 16, 1993, respectively.
(1)   Net investment income  before waiver  of fees by  the Investment  
Adviser,
      Administrator, Custodian and Transfer Agent and expenses reimbursed by 
the
      Investment Adviser and Administrator for Class A and Class B were 
$0.0261,
      $0.0075, respectively.
(2)   Total return represents aggregate total return for the period indicated.
(3)   Total net assets for Class B was $100 at January 31, 1994.
(4)   Annualized.
(5)   Annualized expense ratio before waiver of fees by the Investment 
Adviser,
      Administrator, Custodian and Transfer Agent and expenses reimbursed by 
the
      Investment Adviser and Administrator for Class A and Class B were 0.53%
      and 0.78%, respectively.
</TABLE>
    
 
                                       3
<PAGE>
                       INVESTMENT OBJECTIVE AND POLICIES
 
   
    The  Fund's  investment  objective  is  current  income  with  liquidity 
and
security of  principal. The  Fund, which  operates as  a diversified  
investment
company, invests in obligations issued or guaranteed by the U.S. government, 
its
agencies  or instrumentalities (in addition  to direct Treasury obligations) 
and
repurchase agreements relating  to such  obligations. The Fund  invests only  
in
securities  which are  purchased with  and payable  in U.S.  dollars (i.e., 
U.S.
dollar denominated  securities)  and which  have  (or, pursuant  to  
regulations
adopted by the Securities and Exchange Commission, are deemed to have) 
remaining
maturities  of 12 months or less  at the date of purchase  by the Fund. The 
Fund
maintains a dollar-weighted average portfolio maturity of 90 days or less.
    
 
   
    The "instrumentalities" or "agencies" of the U.S. government the 
obligations
of  which  may  be  purchased  by  the  Fund  include:  the  Central  Bank   
for
Cooperatives,   Export-Import   Bank  of   the   United  States,   Farmers  
Home
Administration, Federal Farm Credit Banks, Federal Financing Bank, Federal  
Home
Loan   Banks,   Federal  Home   Loan   Mortgage  Corporation,   Federal  
Housing
Administration, Federal Intermediate Credit  Banks, Federal Land Banks,  
Federal
National   Mortgage   Association,  Financing   Corporation,   General  
Services
Administration,   Government    National    Mortgage    Association,    
Maritime
Administration,  Private  Export  Funding Corp.,  Resolution  Trust 
Corporation,
Small Business  Administration, Student  Loan Marketing  Association,  
Tennessee
Valley  Authority, U.S. Postal  Service and Washington,  D.C. Armory Board. 
Some
obligations issued or guaranteed  by agencies or  instrumentalities of the  
U.S.
Government  are backed by the full faith and credit of the United States; 
others
are backed by the right  of the issuer to borrow  from the U.S. Treasury or  
are
backed  only  by  the  credit  of  the  agency  or  instrumentality  issuing 
the
obligation.
    
 
   
    Securities issued or  guaranteed by  the U.S. government,  its agencies  
and
instrumentalities have historically involved little risk of loss of principal 
if
held  to maturity.  However, due to  fluctuations in interest  rates, the 
market
value of such securities may vary during the period a shareholder owns shares 
of
the Fund. Certain  government securities  held by  the Fund  may have  
remaining
maturities  exceeding 12  months if such  securities provide  for adjustments 
in
their interest rates not less frequently than every 12 months.
    
 
    The Fund  may invest  in zero  coupon U.S.  Treasury securities,  which  
are
Treasury  notes and  bonds that have  been stripped of  their unmatured 
interest
coupons, the  coupons  themselves  and  receipts  or  certificates  
representing
interests  in such stripped debt obligations and coupons. A zero coupon 
security
pays no interest to its holder during its life and is sold at a discount to  
its
face  value at maturity. The  amount of the discount  fluctuates with the 
market
price of the security. The market prices of zero coupon securities generally 
are
more  volatile  than  the  market   prices  of  securities  that  pay   
interest
periodically  and  are likely  to  respond to  a  greater degree  to  changes 
in
interest rates than  non-zero coupon  securities having  similar maturities  
and
credit qualities. Although zero coupon securities do not make interest 
payments,
for  tax purposes a portion  of the difference between  a zero coupon 
security's
maturity value and its purchase  price is taxable income  of the Fund each  
year
and distributed to Fund shareholders. Distributions to shareholders with 
respect
to  taxable income on zero coupon securities  will reduce cash available for 
the
purchase of income producing securities.
 
    The Fund  may purchase  government securities  from financial  
institutions,
such  as  banks  and  broker-dealers,  subject  to  the  seller's  agreement  
to
repurchase them at an agreed upon time and price ("repurchase agreements").  
The
securities  subject to a  repurchase agreement may  bear maturities exceeding 
12
months, provided the repurchase  agreement itself matures in  one year or  
less.
The  Fund  will not  invest more  than 10%  of the  value of  its net  assets 
in
repurchase agreements which do not provide for settlement within seven days. 
The
 
                                       4
<PAGE>
seller under a repurchase  agreement will be required  to maintain the value  
of
the  securities subject to the  agreement at not less  than the repurchase 
price
(including accrued  interest). Default  by or  bankruptcy of  the seller  
would,
however,  expose the Fund to  possible loss because of  adverse market action 
or
delay in connection with the disposition of the underlying obligations.
 
    The Fund may borrow  funds for temporary purposes  by entering into  
reverse
repurchase  agreements in accordance with  the investment restrictions 
described
below. Pursuant to such agreements, the Fund would sell portfolio securities  
to
financial  institutions and agree to repurchase them  at an agreed upon date 
and
price. The Fund would  consider entering into  reverse repurchase agreements  
to
avoid  otherwise selling securities during unfavorable market conditions to 
meet
redemptions. Reverse  repurchase agreements  involve the  risk that  the  
market
value  of the portfolio securities sold by  the Fund may decline below the 
price
of the securities the Fund is obligated to repurchase.
 
    The Fund  may  purchase securities  on  a "when-issued"  basis.  When-
issued
securities  are securities purchased  for delivery beyond  the normal 
settlement
date at a  stated price  and yield.  The Fund will  generally not  pay for  
such
securities or start earning interest on them until they are received. 
Securities
purchased  on a when-issued  basis are recorded  as an asset  and are subject 
to
changes in value based upon changes in the general level of interest rates.  
The
Fund expects that commitments to purchase when-issued securities will not 
exceed
25%  of the value of its total assets absent unusual market conditions. The 
Fund
does not intend to purchase when-issued securities for speculative purposes  
but
only in furtherance of its investment objective.
 
   
    The Fund may also lend its portfolio securities to financial institutions 
in
accordance  with the investment restrictions described  below. The Fund may 
lend
portfolio securities against collateral consisting  of cash or securities  
which
are  consistent with  the Fund's  permitted investments,  which is  equal at 
all
times to  at least  100% of  the value  of the  securities loaned.  There is  
no
limitation  on the  amount of  securities that may  be loaned.  Such loans 
would
involve risks of delay in receiving  additional collateral or in recovering  
the
securities  loaned or even loss of rights  in the collateral should the 
borrower
of the  securities  fail  financially.  However, loans  will  be  made  only  
to
borrowers  deemed by the  Fund's Investment Adviser  to be of  good standing 
and
only when, in the  adviser's judgment, the  income to be  earned from the  
loans
justifies the attendant risks.
    
 
    There  can  be  no  assurance  that the  Fund  will  achieve  its 
investment
objective.
 
INVESTMENT LIMITATIONS
 
   
    The Fund's  investment  objective  and  policies  described  above  are  
not
fundamental  and may be changed by the  Trust's Board of Trustees without a 
vote
of shareholders. If  there is a  change in the  investment objective,  
investors
should  consider whether the Fund remains  an appropriate investment in light 
of
their then current financial position and needs. The Fund's borrowing 
limitation
summarized below may not be changed without the affirmative vote of the  
holders
of  a majority  of its  outstanding shares. (A  complete list  of the 
investment
limitations that cannot be changed without  a vote of shareholders is  
contained
in  the  Statement of  Additional  Information under  "Investment  Objective 
and
Policies.")
    
 
    The Fund may not borrow money  except from banks for temporary purposes  
and
then  in an amount not exceeding 10% of the value of the Fund's total assets, 
or
mortgage, pledge or hypothecate its assets except in
 
                                       5
<PAGE>
connection with any such borrowing and in amounts not in excess of the lesser 
of
the dollar amounts borrowed or  10% of the value of  the Fund's total assets  
at
the  time  of  such borrowing.  Additional  investments  will not  be  made 
when
borrowings exceed 5% of the Fund's assets.
 
                       PURCHASE AND REDEMPTION OF SHARES
 
PURCHASE PROCEDURES
 
   
    Shares of the Fund  are sold at the  net asset value per  share of the  
Fund
next  determined  after receipt  of  a purchase  order  by Lehman  Brothers, 
the
Distributor of the Fund's shares. Purchase orders for shares are accepted by 
the
Fund only on days on which both Lehman Brothers and the Federal Reserve Bank  
of
Boston  are open  for business  and must be  transmitted to  Lehman Brothers, 
by
telephone at  800-851-3134. Orders  received prior  to noon,  Eastern time,  
for
which  payment  has  been received  by  Boston  Safe Deposit  and  Trust 
Company
("Boston Safe"), the Fund's Custodian, will be executed at noon. Orders 
received
between noon and 3:00 P.M., Eastern time, will be executed at 3:00 P.M., 
Eastern
time, if payment  has been  received by  Boston Safe by  3:00 P.M.  and will  
be
executed  at 4:00 P.M. if payment has been received by 4:00 P.M. Orders 
received
after 3:00 P.M.,  and orders for  which payment  has not been  received by  
4:00
P.M., Eastern time, will not be accepted and notice thereof will be given to 
the
institution  placing the  order. Payments  for Fund shares  may be  made only 
in
federal funds  available to  Boston  Safe. (Payment  for  orders which  are  
not
received or accepted by Lehman Brothers will be returned after prompt inquiry 
to
the  sending institution.) The Fund  may in its discretion  reject any order 
for
shares.
    
 
   
    The minimum aggregate initial investment by an institution in the 
investment
portfolios that comprise  the Trust is  $1 million (with  not less than  
$25,000
invested  in  any  one  investment portfolio  offered  by  the  Trust); 
however,
broker-dealers and other institutional  investors may set  a higher minimum  
for
their  customers. To reach the  minimum Trust-wide initial investment, 
purchases
of shares may be  aggregated over a  period of six months.  There is no  
minimum
subsequent investment.
    
 
   
    Conflict  of interest restrictions may apply  to an institution's receipt 
of
compensation paid by the Fund on fiduciary funds that are invested in Class B 
or
Class C  shares.  See  also "Management  of  the  Fund--Service  
Organizations."
Institutions,  including banks regulated by the  Comptroller of the Currency 
and
investment advisers and other money managers subject to the jurisdiction of  
the
Securities  and Exchange Commission, the Department of Labor or state 
securities
commissions, should  consult their  legal  advisors before  investing  
fiduciary
funds in Class B or Class C shares.
    
 
   
    SUBACCOUNTING  SERVICES.  Institutions are  encouraged to open single 
master
accounts. However, certain  institutions may  wish to use  the Transfer  
Agent's
subaccounting  system to minimize their internal recordkeeping requirements. 
The
Transfer Agent  charges a  fee  based on  the  level of  subaccounting  
services
rendered.  Institutions holding Fund shares in a fiduciary, agency, custodial 
or
similar capacity may charge or pass through subaccounting fees as part of or  
in
addition  to normal trust or agency account  fees. They may also charge fees 
for
other services provided which  may be related to  the ownership of Fund  
shares.
This  Prospectus should, therefore, be read  together with any agreement 
between
the customer and the institution with regard to the services provided, the  
fees
charged for those services and any restrictions and limitations imposed.
    
 
                                       6
<PAGE>
REDEMPTION PROCEDURES
 
   
    Redemption  orders must  be transmitted to  Lehman Brothers  by telephone 
at
1-800-851-3134. Payment  for redeemed  shares for  which a  redemption order  
is
received  by Lehman Brothers before 3:00 P.M.,  Eastern time, on a day that 
both
Lehman Brothers and the Federal Reserve Bank of Boston are open for business  
is
normally  made in federal funds  wired to the redeeming  shareholder on the 
same
business day. Payment  for other  redemption orders which  are received  
between
3:00 P.M. and 4:00 P.M., Eastern time, is normally wired in federal funds on 
the
next business day following redemption.
    
 
   
    Shares  are redeemed at the net asset  value per share next determined 
after
Lehman Brothers' receipt of the redemption order. While the Fund intends to  
use
its  best  efforts to  maintain  its net  asset value  per  share at  $1.00, 
the
proceeds paid to an investor upon redemption may be more or less than the 
amount
invested depending upon a share's net asset value at the time of redemption.  
To
allow  the Fund's Investment  Adviser to manage  the Fund effectively, 
investors
are strongly urged to initiate all investments or redemptions of Fund shares  
as
early  in the day as possible and to  notify Lehman Brothers at least one day 
in
advance of transactions in excess of $5 million.
    
 
   
    The Fund reserves the  right to wire redemption  proceeds within seven  
days
after  receiving  the redemption  order if,  in the  judgment of  the 
Investment
Adviser, an earlier payment could adversely affect the Fund. The Fund shall 
have
the right to redeem involuntarily shares in any account at their net asset 
value
if the value of the  account is less than $10,000  after 60 days' prior  
written
notice  to the investor. Any such redemption  shall be effected at the net 
asset
value per share next determined after the redemption order is entered. If 
during
the 60-day period the shareholder increases the value of its account to  
$10,000
or  more, no such redemption shall take  place. In addition, the Fund may 
redeem
shares involuntarily or suspend the right  of redemption as permitted under  
the
Investment  Company Act of 1940,  as amended (the "1940  Act"), or under 
certain
special circumstances described in the Statement of Additional Information 
under
"Additional Purchase and Redemption Information."
    
 
   
VALUATION OF SHARES--NET ASSET VALUE
    
   
    The Fund's net asset  value per share for  purposes of pricing purchase  
and
redemption  orders is  determined by the  Fund's Administrator as  of noon, 
3:00
P.M. and 4:00 P.M., Eastern time, on  each weekday, with the exception of  
those
holidays  on which either Lehman Brothers or  the Federal Reserve Bank of 
Boston
is closed.  Currently, one  or both  of  these institutions  are closed  on  
the
customary  national business  holidays of  New Year's  Day, Martin  Luther 
King,
Jr.'s Birthday (observed), Presidents' Day (Washington's Birthday), Good 
Friday,
Memorial Day, Independence  Day, Labor  Day, Columbus  Day (observed),  
Veterans
Day,  Thanksgiving  Day  and  Christmas  Day, and  on  the  preceding  Friday 
or
subsequent Monday when  one of  these holidays falls  on a  Saturday or  
Sunday,
respectively.  The net asset value per share of the Fund is calculated by 
adding
the value of all securities and other assets belonging to the Fund,  
subtracting
liabilities  and  dividing  the  result  by  the  total  number  of  the  
Fund's
outstanding shares (irrespective of class or sub-class). In computing net  
asset
value,  the Fund uses the amortized cost method of valuation as described in 
the
Statement of Additional  Information under "Additional  Purchase and  
Redemption
Information."  The  Fund's net  asset value  per share  for purposes  of 
pricing
purchase and  redemption orders  is determined  independently of  the net  
asset
values of the shares of the Trust's other investment portfolios.
    
 
                                       7
<PAGE>
   
OTHER MATTERS
    
    Fund  shares are sold and redeemed without charge by the Fund. 
Institutional
investors purchasing  or holding  Fund shares  for their  customer accounts  
may
charge  customers  fees  for  cash management  and  other  services  provided 
in
connection with their accounts. A customer should, therefore, consider the 
terms
of its account with an institution before purchasing Fund shares. An 
institution
purchasing or redeeming  shares on behalf  of its customers  is responsible  
for
transmitting   orders  to  Lehman  Brothers  in  accordance  with  its  
customer
agreements.
 
                                   DIVIDENDS
 
   
    ** 1  Investors of  the Fund  are entitled  to dividends  and  
distributions
arising only from the net investment income and capital gains, if any, earned 
on
its  investments.  The  Fund's net  investment  income  is declared  daily  as 
a
dividend to its shareholders of  record at the close of  business on the day  
of
declaration.  Shares begin accruing dividends on  the day the purchase order 
for
the shares is effected and continue  to accrue dividends through the day  
before
such  shares are  redeemed. Dividends are  paid monthly by  wire transfer 
within
five business days after the end of the month or within five business days 
after
a redemption of all of  a shareholder's shares of  a particular class. The  
Fund
does not expect to realize net long-term capital gains.
    
 
   
    **  2 Dividends are determined  in the same manner and  are paid in the 
same
amount for each Fund share except that Class  B and Class C shares bear all  
the
expense  of fees paid to Service Organizations.  As a result, at any given 
time,
the net yield on Class B and Class C shares will be .25% and .35%, 
respectively,
lower than the net yield on Class A shares.
    
 
   
    Institutional investors  may elect  to have  their dividends  reinvested  
in
additional  full and fractional shares  of the same class  with respect to 
which
such dividends are declared at the net asset value of such shares on the 
payment
date. Reinvested dividends receive the same  tax treatment as dividends paid  
in
cash.  Such election, or any revocation thereof,  must be made in writing to 
the
Fund's Distributor,  260  Franklin  Street, 15th  Floor,  Boston,  
Massachusetts
02110-9624,  and will become effective after its receipt by the Distributor 
with
respect to dividends paid.
    
 
   
    The Shareholder Services Group, Inc. ("TSSG"), as Transfer Agent, will  
send
each  investor or  its authorized  representative, if  any, an  annual 
statement
designating the amount  of any  dividends and capital  gains distributions  
made
during each year and their federal tax qualification.
    
 
   
                                     TAXES
    
 
   
    The Fund qualified in its last taxable year and intends to qualify in 
future
years  as a  "regulated investment company"  under the Internal  Revenue Code 
of
1986, as amended  (the "Code"). A  regulated investment company  is exempt  
from
federal income tax on amounts distributed to its investors.
    
 
   
    **  3 Qualification as a  regulated investment company under  the Code for 
a
taxable year  requires, among  other things,  that the  Fund distribute  to  
its
investors  at least 90% of its investment  company taxable income for such 
year.
In general, the  Fund's investment company  taxable income will  be its  
taxable
income  (including interest)  subject to  certain adjustments  and excluding 
the
excess   of    any    net   long-term    capital    gain   for    the    
taxable
    
 
                                       8
<PAGE>
   
year  over the  net short-term  capital loss,  if any,  for such  year. The 
Fund
intends to distribute substantially all of its investment company taxable 
income
each year. Such distributions will be  taxable as ordinary income to the  
Fund's
investors  who are not currently exempt  from federal income taxes, whether 
such
income is received in cash or reinvested in additional shares. It is 
anticipated
that none  of  the Fund's  distributions  will  be eligible  for  the  
dividends
received  deduction  for  corporations.  The Fund  does  not  expect  to 
realize
long-term capital gains and therefore does not expect to distribute any 
"capital
gain dividends" as described in the Code.
    
 
   
    ** 4 Dividends declared in October, November or December of any year 
payable
to investors of record on a specified date in such months will be deemed to 
have
been received by the investors and paid by the Fund on December 31 of such  
year
in  the event such dividends  are actually paid during  January of the 
following
year.
    
 
   
    ** 5 Many states,  by statute, judicial  decision or administrative  
action,
have taken the position that dividends of a regulated investment company such 
as
the  Fund that are attributable to interest  on obligations of the U.S. 
Treasury
and certain U.S.  government agencies and  instrumentalities are the  
functional
equivalent  of interest  from such obligations  and are,  therefore, exempt 
from
state and local income taxes.
    
 
   
    ** 6 The  Fund will provide  investors annually with  information about  
the
portion  of  dividends  from  the  Fund  derived  from  U.S.  Treasury  and 
U.S.
government agency obligations. Investors should  be aware of the application  
of
their state and local tax laws to investments in the Fund.
    
 
   
    **  7  The foregoing  discussion  is only  a brief  summary  of some  of 
the
important federal  tax  considerations  generally affecting  the  Fund  and  
its
investors.  No attempt is made to present a detailed explanation of the 
federal,
state or  local income  tax treatment  of the  Fund or  its investors  and  
this
discussion   is  not  intended  as  a   substitute  for  careful  tax  
planning.
Accordingly, potential investors in the  Fund should consult their tax  
advisors
with specific reference to their own tax situation.
    
 
                             MANAGEMENT OF THE FUND
 
   
    The  business and affairs of the Fund are managed under the direction of 
the
Trust's Board  of  Trustees. The  Trustees  approve all  significant  
agreements
between  the Trust  and the  persons or companies  that furnish  services to 
the
Fund,  including   agreements   with  its   Distributor,   Investment   
Adviser,
Administrator,  Custodian and Transfer  Agent. The day-to-day  operations of 
the
Fund are  delegated to  the  Fund's Investment  Adviser and  Administrator.  
The
Statement  of  Additional  Information  relating to  the  Fund  contains 
general
background information  regarding  each Trustee  and  executive officer  of  
the
Trust.
    
 
   
DISTRIBUTOR
    
   
    Lehman  Brothers, located  at 3 World  Financial Center, New  York, New 
York
10285, is the Distributor of the Fund's shares. Lehman Brothers, a leading  
full
service  investment  firm, meets  the  diverse financial  needs  of 
individuals,
institutions and governments around the world. Lehman Brothers has entered  
into
a   Distribution  Agreement  with  the  Trust  pursuant  to  which  it  has  
the
responsibility for distributing shares of the Fund.
    
 
   
INVESTMENT ADVISER--LEHMAN BROTHERS GLOBAL ASSET MANAGEMENT INC.
    
   
    Lehman Brothers Global Asset Management  Inc. ("LBGAM"), located at 3  
World
Financial  Center, New  York, New  York 10285,  serves as  the Fund's 
Investment
Adviser. LBGAM is a wholly owned subsidiary of
    
 
                                       9
<PAGE>
   
Lehman Brothers Holdings  Inc. ("Holdings"). LBGAM,  together with other  
Lehman
Brothers  investment  advisory  affiliates,  serves  as  Investment  Adviser  
to
investment companies and  private accounts  and has assets  under management  
in
excess of [$15] billion as of ___________, 1994.
    
 
   
    As   Investment  Adviser  to  the  Fund,  LBGAM  will  among  other  
things,
participate in  the  formulation  of the  Fund's  investment  policies,  
analyze
economic  trends  affecting  the  Fund,  and  monitor  and  evaluate  the 
Fund's
investment objective and policies and the Fund's investment performance. For 
its
services LBGAM is entitled to receive a monthly fee from the Fund at the  
annual
rate of .10% of the value of the Fund's average daily net assets. For the 
period
February  8,  1993  (commencement  of operations)  to  January  31,  1994, 
LBGAM
received an advisory fee from the Fund in the amount of ._% of average daily 
net
assets.
    
 
   
ADMINISTRATOR AND TRANSFER AGENT--THE SHAREHOLDER SERVICES GROUP, INC.
    
   
    The Shareholder  Services  Group, Inc.  ("TSSG"),  located at  One  
Exchange
Place,  53  State  Street, Boston,  Massachusetts  02109, serves  as  the 
Fund's
Administrator and Transfer  Agent. TSSG is  a wholly owned  subsidiary of  
First
Data  Corporation. As Administrator, TSSG calculates  the net asset value of 
the
Fund's shares and generally assists in all aspects of the Fund's  
administration
and  operation. As  compensation for TSSG's  services as  Administrator, TSSG 
is
entitled to receive from the  Fund a monthly fee at  the annual rate of .10%  
of
the  value of  the Fund's  average daily  net assets.  TSSG is  also entitled 
to
receive a fee from the Fund for its services as Transfer Agent. TSSG pays 
Boston
Safe, the Fund's  Custodian, a  portion of  its monthly  administration fee  
for
custody services rendered to the Fund.
    
 
   
CUSTODIAN--BOSTON SAFE DEPOSIT AND TRUST COMPANY
    
   
    Boston  Safe, a wholly owned subsidiary of The Boston Company, Inc., 
located
at  One  Boston  Place,  Boston,  Massachusetts  02108,  serves  as  the  
Fund's
Custodian.
    
 
SERVICE ORGANIZATIONS
 
   
    Financial  institutions, such  as banks,  savings and  loan associations 
and
other such institutions ("Service Organizations") and/or institutional 
customers
of Service Organizations may  purchase Class B or  Class C shares. These  
shares
are  identical in all respects to Class A  shares except that they bear the 
fees
described below and enjoy certain exclusive voting rights on matters relating 
to
these fees. The Fund will enter into an agreement with each Service 
Organization
whose customers ("Customers") are  the beneficial owners of  Class B or Class  
C
shares  that requires  the Service Organization  to provide  certain services 
to
Customers in consideration of the Fund's  payment of service fees at the  
annual
rate  of .25% or .35%, respectively, of the average daily net asset value of 
the
respective Class beneficially owned by  the Customers. Such services, which  
are
described   more  fully  in  the   Statement  of  Additional  Information  
under
"Management of the  Funds--Service Organizations," may  include aggregating  
and
processing  purchase  and redemption  requests  from Customers  and  placing 
net
purchase  and  redemption  orders  with  Lehman  Brothers;  processing  
dividend
payments   from  the  Fund   on  behalf  of   Customers;  providing  
information
periodically to Customers showing their positions in shares; arranging for  
bank
wires; responding to Customer inquiries relating to the services provided by 
the
Service  Organization  and  handling correspondence;  acting  as  shareholder 
of
record and nominee; and providing  reasonable assistance in connection with  
the
distribution  of shares to Customers. Services  provided with respect to Class 
B
shares will generally be more limited than those provided with respect to  
Class
C  shares. Under the terms of the agreements, Service Organizations are 
required
to provide to their Customers a schedule of any fees that they may charge to 
the
Customers in connection  with their  investment in Class  B or  Class C  
shares.
Class A shares
    
 
                                       10
<PAGE>
   
are  sold  to  financial  institutions  that  have  not  entered  into 
servicing
agreements with the Fund in connection with their investments. A salesperson 
and
any other  person entitled  to  receive compensation  for selling  or  
servicing
shares  of the Fund may receive  different compensation for selling or 
servicing
one Class of shares over another Class.
    
 
EXPENSES
 
   
    The Fund bears all of its  own expenses. The Fund's expenses include  
taxes,
interest,  fees and salaries  of the Trust's  trustees and officers  who are 
not
directors, officers or employees of  the Fund's service contractors,  
Securities
and  Exchange  Commission fees,  state securities  qualification fees,  costs 
of
preparing and printing prospectuses for regulatory purposes and for 
distribution
to investors,  advisory  and  administration fees,  charges  of  the  
custodian,
transfer agent and dividend disbursing agent, Service Organization fees, 
certain
insurance  premiums, outside auditing  and legal expenses,  costs of 
shareholder
reports and shareholder meetings and  any extraordinary expenses. The Fund  
also
pays for brokerage fees and commissions (if any) in connection with the 
purchase
and  sale of  portfolio securities. In  order to maintain  a competitive 
expense
ratio during 1994, LBGAM and TSSG have agreed voluntarily to reimburse the  
Fund
if and to the extent that the Fund's total operating expenses (other than 
taxes,
interest, brokerage fees and commissions, Rule 12b-1 fees under the 1940 Act 
and
extraordinary expenses) exceed .16% of average daily net assets through 
December
31,   1994.  The  Investment  Adviser   and  Administrator  intend  to  
continue
voluntarily to  reimburse  the Fund  to  the  extent necessary  to  maintain  
an
annualized  expense ratio at a  level no greater than  .18% of average daily 
net
assets thereafter.  This  voluntary reimbursement  will  not be  changed  
unless
investors  are provided  at least  60 days'  advance notice.  In addition, 
these
service providers have agreed  to reimburse the Fund  to the extent required  
by
applicable state law for certain expenses that are described in the Statement 
of
Additional  Information  relating  to  the Fund.  Any  fees  charged  by 
Service
Organizations or other institutional investors to their customers in  
connection
with investments in Fund shares are not reflected in the Fund's expenses.
    
 
   
                                     YIELDS
    
 
   
    From  time to time the "yields" and  "effective yields" for class A, Class 
B
and Class C shares may be quoted  in advertisements or in reports to  
investors.
The  "yield" quoted in advertisements for a particular class or sub-class 
refers
to the income generated by an investment in such shares over a specified  
period
(such  as a  seven-day period identified  in the advertisement).  This income 
is
then "annualized"; that  is, the amount  of income generated  by the  
investment
during that period is assumed to be generated each such period over a 52-week 
or
one-year  period and is shown as a  percentage of the investment. The 
"effective
yield" is calculated  similarly but, when  annualized, the income  earned by  
an
investment  in a class or sub-class is  assumed to be reinvested. The 
"effective
yield" will  be slightly  higher than  the "yield"  because of  the  
compounding
effect of this assumed reinvestment.
    
 
   
    **  8 The Fund's yields may be compared  to those of other mutual funds 
with
similar objectives, to stock or other relevant indices, or to rankings  
prepared
by independent services or other financial or industry publications that 
monitor
the performance of mutual funds. For example, such data are reported in 
national
financial  publications such  as IBC/DONOGHUE'S  MONEY FUND  REPORT-R-, THE 
WALL
STREET JOURNAL and  THE NEW YORK  TIMES, reports prepared  by LIPPER  
ANALYTICAL
SERVICE, INC. and publications of local or regional nature.
    
 
                                       11
<PAGE>
   
    **  9  THE  FUND'S YIELD  FIGURES  FOR  A CLASS  OF  SHARES  REPRESENTS 
PAST
PERFORMANCE, WILL FLUCTUATE AND  SHOULD NOT BE  CONSIDERED AS REPRESENTATIVE  
OF
FUTURE RESULTS. The yield of any investment is generally a function of 
portfolio
quality  and maturity, type of investment  and operating expenses. Since 
holders
of Class B  or Class C  shares bear all  service fees for  services provided  
by
Service Organizations, the net yield on such shares can be expected at any 
given
time  to be  lower than the  net yield  on Class A  shares. Any  fees charged 
by
Service  Organizations  or  other  institutional  investors  directly  to  
their
customers in connection with investments in Fund shares are not reflected in 
the
Fund's  expenses or yields.  The methods used  to compute the  Fund's yields 
are
described in more detail in  the Statement of Additional Information.  
Investors
may  call 1-800-238-2560 (Class  A shares code:  003; Class B  shares code: 
103;
Class C shares code: 203) to obtain current yield information.
    
 
   
    The yields for  Class A, Class  B and Class  C shares for  the Fund for  
the
seven-day period ended January 31, 1994 were _%, _% and _%, respectively.
    
 
                             DESCRIPTION OF SHARES
 
    * 1 moved from here; text not shown
 
    * 2 moved from here; text not shown
 
   
    * 3 moved from here; text not shown
    
 
    * 4 moved from here; text not shown
 
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    The  Trust is  a Massachusetts  business trust  established on  November 
25,
1992.
 
   
    The Trust's Declaration of Trust authorizes  the Board of Trustees to  
issue
an  unlimited number of full and fractional shares of beneficial interest in 
the
Trust and  to  classify or  reclassify  any unissued  shares  into one  or  
more
additional  classes of  shares. The Trust  is an  open-end management 
investment
company, which offers twelve portfolios: Prime Money Market Fund (Class A, 
Class
B and Class C),  Prime Value Money Market  Fund (Class A, Class  B, Class C  
and
Class  D), Government Obligations Money  Market Fund (Class A,  Class B, Class 
C
and Class D), 100%  Government Obligations Money Market  Fund (Class A, Class  
B
and  Class C), Treasury Instruments  Money Market Fund II  (Class A, Class B 
and
Class C), 100%  Treasury Instruments  Money Market Fund  (Class A,  Class B  
and
Class  C), Tax-Free Money Market Fund (Class  A, Class B and Class C), 
Municipal
Money Market Fund (Class A, Class B, Class C and Class D), California  
Municipal
Money  Market Fund  (Class A,  Class B  and Class  C), New  York Municipal 
Money
Market Fund (Class A, Class B and  Class C), Floating Rate U.S. Government  
Fund
(Class A and Class B) and Short Duration U.S. Government Fund (Class A and 
Class
B). Shares of the New York Municipal Money Market Fund are not currently sold 
to
the public. The Declaration of Trust further authorizes the Trustees to 
classify
or reclassify any class of shares into one or more sub-classes.
    
 
                                       12
<PAGE>
   
    THIS  PROSPECTUS AND  THE STATEMENT  OF ADDITIONAL  INFORMATION 
INCORPORATED
HEREIN RELATE PRIMARILY TO THE FUND  AND DESCRIBE ONLY THE INVESTMENT  
OBJECTIVE
AND  POLICIES, OPERATIONS,  CONTRACTS AND  OTHER MATTERS  RELATING TO  THE 
FUND.
INVESTORS WISHING  TO OBTAIN  SIMILAR INFORMATION  REGARDING THE  TRUST'S  
OTHER
PORTFOLIOS MAY OBTAIN SEPARATE PROSPECTUSES DESCRIBING THEM BY CONTACTING 
LEHMAN
BROTHERS AT 1-800-368-5556.
    
 
    The  Trust does not presently intend to hold annual meetings of 
shareholders
except as required by the 1940 Act or other applicable law. The Trust will  
call
a meeting of shareholders for the purpose of voting upon the question of 
removal
of a member of the Board of Trustees upon written request of shareholders 
owning
at least 10% of the outstanding shares of the Trust entitled to vote.
 
    Each  Fund share  represents an equal  proportionate interest  in the 
assets
belonging to  the Fund.  Each share,  which has  a par  value of  $.001, has  
no
preemptive  or conversion rights.  When issued for payment  as described in 
this
Prospectus, shares will be fully paid and non-assessable.
 
    Holders of the Fund's shares will vote in the aggregate and not by class  
on
all matters, except where otherwise required by law and except that only Class 
B
or  Class C  shares, as the  case may  be, will be  entitled to  vote on 
matters
submitted to a vote of shareholders  pertaining to the Fund's arrangements  
with
Service  Organizations with respect to the relevant Class. Further, 
shareholders
of all of the Trust's portfolios will vote in the aggregate and not by 
portfolio
except as otherwise  required by law  or when the  Board of Trustees  
determines
that  the matter to be voted upon affects only the interests of the 
shareholders
of a particular portfolio.  (See the Statement  of Additional Information  
under
"Miscellaneous"  for examples where the 1940  Act requires voting by 
portfolio.)
Shareholders of the  Trust are entitled  to one  vote for each  full share  
held
(irrespective  of class or portfolio) and fractional votes for fractional 
shares
held. Voting rights are  not cumulative; and, accordingly,  the holders of  
more
than 50% of the aggregate shares of the Trust may elect all of the trustees.
 
   
    For  information  concerning  the  redemption of  Fund  shares  and 
possible
restrictions on their transferability, see "Purchase and Redemption of 
Shares."
    
 
   
    * 8 moved from here; text not shown
    
 
   
    * 9 moved from here; text not shown
    
 
                                       13
<PAGE>
                LEHMAN BROTHERS INSTITUTIONAL FUNDS GROUP TRUST
 
   
                            Prime Money Market Fund
                         Prime Value Money Market Fund
                    Government Obligations Money Market Fund
                 100% Government Obligations Money Market Fund
                     Treasury Instruments Money Market Fund
                  100% Treasury Instruments Money Market Fund
                          Municipal Money Market Fund
                           Tax-Free Money Market Fund
                     California Municipal Money Market Fund
                      New York Municipal Money Market Fund
    
                            ------------------------
 
   
                       Floating Rate U.S. Government Fund
                      Short Duration U.S. Government Fund
    
 
                            ------------------------
   
NO  PERSON  HAS  BEEN  AUTHORIZED  TO  GIVE  ANY  INFORMATION  OR  TO  MAKE  
ANY
REPRESENTATIONS NOT CONTAINED IN THIS PROSPECTUS, OR IN THE FUND'S STATEMENT  
OF
ADDITIONAL  INFORMATION INCORPORATED HEREIN BY REFERENCE, IN CONNECTION WITH 
THE
OFFERING MADE BY  THIS PROSPECTUS  AND, IF GIVEN  OR MADE,  SUCH INFORMATION  
OR
REPRESENTATIONS  MUST NOT BE RELIED UPON AS  HAVING BEEN AUTHORIZED BY THE 
TRUST
OR ITS DISTRIBUTOR. THIS PROSPECTUS DOES NOT CONSTITUTE AN OFFERING BY THE 
TRUST
OR BY  THE  DISTRIBUTOR IN  ANY  JURISDICTION IN  WHICH  SUCH OFFERING  MAY  
NOT
LAWFULLY BE MADE.
    
                              -------------------
                               TABLE OF CONTENTS
 
   
<TABLE>
<CAPTION>
                                              PAGE
                                            ---------
<S>                                         <C>
Background and Expense Information........          2
Financial Highlights......................          3
Investment Objective and Policies.........          4
Purchase and Redemption of Shares.........          6
Dividends.................................          8
Taxes.....................................          8
Management of the Fund....................          9
Yields....................................         11
Description of Shares.....................         12
</TABLE>
    
 
                                   GOVERNMENT
                                  OBLIGATIONS
                               MONEY MARKET FUND
 
                              -------------------
 
   
                                   PROSPECTUS
                                  May __, 1994
    
 
                             ---------------------
 
                                LEHMAN BROTHERS
 
   
THIS PROSPECTUS AND THE STATEMENT OF ADDITIONAL INFORMATION INCORPORATED 
HEREIN
  RELATE PRIMARILY TO THE FUND AND DESCRIBE ONLY THE INVESTMENT OBJECTIVE AND
    POLICIES, OPERATIONS, CONTRACTS AND OTHER MATTERS RELATING TO THE FUND.
  INVESTORS WISHING TO OBTAIN SIMILAR INFORMATION REGARDING THE TRUST'S OTHER
PORTFOLIOS MAY OBTAIN SEPARATE PROSPECTUSES DESCRIBING THEM BY CONTACTING 
LEHMAN
                          BROTHERS AT 1-800-368-5556.
    


<PAGE>
PROSPECTUS
 
                     CALIFORNIA MUNICIPAL MONEY MARKET FUND
 
                       An Investment Portfolio Offered By
                Lehman Brothers Institutional Funds Group Trust
 
    Lehman  Brothers Institutional Funds Group Trust (the "Trust") is a no-
load,
open-end, management investment company. The shares described in this 
Prospectus
represent interests in the California Municipal Money Market Fund portfolio 
(the
"Fund"), one of a family of money market portfolios of the Trust.
 
    The Fund's INVESTMENT OBJECTIVE is  to provide California investors with  
as
high a level of current income exempt from federal income tax and, to the 
extent
possible,  from  California  state personal  income  tax as  is  consistent 
with
relative stability of principal. All or a portion of the Fund's dividends may 
be
a specific preference item for purposes of the federal individual and  
corporate
alternative minimum taxes.
 
    Fund  shares may not be purchased  by individuals directly but 
institutional
investors may purchase shares for  accounts maintained by individuals. The  
Fund
currently  offers  three  classes of  shares.  In  addition to  Class  A 
shares,
institutional investors may purchase on behalf of their customers Class B 
shares
and Class C shares, which accrue daily  dividends in the same manner as Class  
A
shares  but bear  all fees  payable by the  Fund to  institutional investors 
for
certain  services  they  provide  to  beneficial  owners  of  such  shares.  
See
"Management of the Fund--Service Organizations."
 
    AN  INVESTMENT IN  THE FUND  IS NEITHER INSURED  NOR GUARANTEED  BY THE 
U.S.
GOVERNMENT. THERE CAN BE NO ASSURANCE THAT THE FUND WILL BE ABLE TO MAINTAIN 
ITS
NET ASSET VALUE OF $1.00 PER SHARE.
 
    LEHMAN BROTHERS,  INC. ("Lehman  Brothers") sponsors  the Fund  and acts  
as
Distributor  of its shares. LEHMAN BROTHERS  GLOBAL ASSET MANAGEMENT INC. 
serves
as the Fund's Investment Adviser.
 
    The address of the Fund is One Exchange Place, Boston, Massachusetts  
02109.
The  Fund can be contacted  as follows: for purchase  and redemption orders 
only
call 1-800-851-3134; for yield information  call 1-800-238-2560 (Class A  
shares
code:  010;  Class B  shares code:  110; Class  C shares  code: 210);  for 
other
information call 1-800-368-5556.
 
    This Prospectus briefly sets forth  certain information about the Fund  
that
investors  should  know before  investing. Investors  are  advised to  read 
this
Prospectus and retain it for future reference. Additional information about  
the
Fund,  contained in a Statement of Additional Information dated May   , 1994, 
as
amended or supplemented from  time to time, has  been filed with the  
Securities
and  Exchange Commission and is available to investors without charge by 
calling
the  Fund's  Distributor   at  1-800-368-5556.  The   Statement  of   
Additional
Information is incorporated in its entirety by reference into this Prospectus.
 
    SHARES  OF THE  FUND ARE  NOT DEPOSITS OR  OBLIGATIONS OF,  OR GUARANTEED 
OR
ENDORSED BY, ANY BANK, AND SUCH SHARES ARE NOT FEDERALLY INSURED BY THE  
FEDERAL
DEPOSIT INSURANCE CORPORATION, THE FEDERAL RESERVE BOARD OR ANY OTHER 
GOVERNMENT
AGENCY.  SHARES  OF THE  FUND INVOLVE  CERTAIN  INVESTMENT RISKS,  INCLUDING 
THE
POSSIBLE LOSS OF PRINCIPAL.
                           --------------------------
 
THESE SECURITIES HAVE  NOT BEEN APPROVED  OR DISAPPROVED BY  THE SECURITIES  
AND
  EXCHANGE   COMMISSION  OR  ANY  STATE  SECURITIES  COMMISSION  NOR  HAS  THE
    SECURITIES AND EXCHANGE  COMMISSION OR ANY  STATE SECURITIES  COMMISSION
      PASSED  UPON  THE  ACCURACY  OR  ADEQUACY  OF  THIS  PROSPECTUS. ANY
                REPRESENTATION TO THE CONTRARY IS A CRIMINAL OFFENSE.
                           --------------------------
 
                                LEHMAN BROTHERS
 
May   , 1994
<PAGE>
                       BACKGROUND AND EXPENSE INFORMATION
 
    The  following Expense Summary lists the costs and expenses that an 
investor
in the Fund can  expect to incur  during the Fund's  current fiscal year  
ending
January  31, 1995. The Fund  offers three separate classes  of shares. Shares 
of
each class represent  equal, pro  rata interests in  the Fund  and accrue  
daily
dividends  in the same manner  except that Class B and  Class C shares bear 
fees
payable by the Fund (at  the rate of .25% and  .35% per annum, respectively)  
to
institutions  for services they provide to the beneficial owners of such 
shares.
See "Management of the Fund--Service Organizations."
 
EXPENSE SUMMARY
 
<TABLE>
<CAPTION>
                                                                                       
CLASS A       CLASS B       CLASS C
                                                                                        
SHARES        SHARES        SHARES
                                                                                     
------------  ------------  ------------
<S>                                                                                  
<C>           <C>           <C>
ANNUAL FUND OPERATING EXPENSES
 (as a percentage of average net assets)
    Advisory Fees (net of applicable fee 
waivers)..................................       0.00%*        0.00%*        
0.00%*
    Rule 12b-1 
fees................................................................          
none        .25%          .35%
    Other Expenses--including Administration Fees (net of applicable fee
     
waivers)......................................................................        
.16%*         .16%*         .16%*
                                                                                        
---           ---           ---
    Total Fund Operating Expenses (after expense 
reimbursement)*...................        .16%          .41%          .51%
                                                                                        
---           ---           ---
                                                                                        
---           ---           ---
<FN>
------------------------
* The Expense Summary above has  been restated to reflect the Fund's  
Investment
  Adviser's  and Administrator's voluntary  reimbursement arrangements in 
effect
  for the Fund's fiscal year ending January  31, 1995. With respect to Class  
A,
  Class  B and  Class C shares  for the month  of January, 1995,  the Total 
Fund
  Operating Expenses including reimbursement of  expenses are anticipated to  
be
  .18%, .43% and .53%, respectively.
</TABLE>
 
    In  order to  maintain a competitive  expense ratio during  1994, the 
Fund's
Investment Adviser and  Administrator have voluntarily  agreed to reimburse  
the
Fund  if and  to the  extent that  total operating  expenses (other  than 
taxes,
interest, brokerage  fees and  commissions, Rule  12b-1 fees  and  
extraordinary
expenses) exceed .16% of average daily net assets through December 31, 1994. 
For
the years 1995-1997, the Investment Adviser and Administrator intend to 
continue
voluntarily  to  reimburse  the Fund  to  the  extent necessary  to  maintain 
an
annualized expense ratio at a  level no greater than  .18% of average daily  
net
assets.  The voluntary  reimbursement arrangements  described above  will not 
be
changed unless shareholders are provided at  least 60 days' advance notice.  
The
maximum   annual  contractual  fees  payable   to  the  Investment  Adviser  
and
Administrator total .20% of  average daily net  assets. Absent reimbursement  
of
expenses,  the Total  Fund Operating Expenses  of Class  A, Class B  and Class 
C
would be .37%,  .62% and  .72%, respectively, of  the Fund's  average daily  
net
assets.
---------
EXAMPLE:
An  investor would pay  the following expenses on  a $1,000 investment, 
assuming
(1) a 5% annual return  and (2) redemption at the  end of each time period  
with
respect to the following shares:
 
<TABLE>
<CAPTION>
                                                             1 YEAR       3 
YEARS      5 YEARS     10 YEARS
                                                           -----------  ------
-----  -----------  -----------
<S>                                                        <C>          <C>          
<C>          <C>
Class A shares:..........................................   $       2    $       
5    $       9    $      20
Class B shares:..........................................   $       4    $      
13    $      23    $      52
Class C shares:..........................................   $       5    $      
16    $      29    $      64
</TABLE>
 
                                       2
<PAGE>
    THE  FOREGOING SHOULD NOT BE CONSIDERED  A REPRESENTATION OF ACTUAL 
EXPENSES
AND RATES OF RETURN, WHICH MAY BE GREATER OR LESSER THAN THOSE SHOWN.
 
    The purpose of the foregoing table is to assist an investor in 
understanding
the various costs and expenses that an  investor in the Fund will bear  
directly
or  indirectly. Certain Service Organizations (as defined below) also may 
charge
their clients fees in connection with investments in Fund shares, which fees 
are
not reflected in the table. For more complete descriptions of the various  
costs
and  expenses, see "Management of the Fund" in this Prospectus and the 
Statement
of Additional Information.
 
                              FINANCIAL HIGHLIGHTS
 
    The following financial  highlights for  the fiscal year  ended January  
31,
1994  is derived from the Fund's Financial  Statements audited by Ernst & 
Young,
independent accountants. This information should be read in conjunction with 
the
financial  statements  and  notes  thereto  that  appear  in  the  Statement  
of
Additional Information.
 
                     CALIFORNIA MUNICIPAL MONEY MARKET FUND
 
<TABLE>
<CAPTION>
                                                                                        
PERIOD ENDED  PERIOD ENDED
                                                                                          
1/31/94*      1/31/94*
                                                                                          
CLASS A       CLASS B
                                                                                        
------------  ------------
<S>                                                                                     
<C>           <C>
Net asset value, beginning of 
period..................................................  $  1.00       $  
1.00
Net investment 
income(1)..............................................................     
0.0225        0.0003
Dividends from net investment 
income..................................................    (0.0225 )     
(0.0003 )
Net asset value, end of 
period........................................................  $  1.00       
$  1.00
Total 
return(2).....................................................................
..     2.29%              --(3)
Ratios to average net assets/supplemental data:
  Net assets, end of period (in 
000's)................................................      $9,575            
--(4)
  Ratio of net investment income to average net 
assets(5).............................       2.31%         2.06%
  Ratio of operating expenses to average net 
assets(5)(6).............................       0.09%         0.34%
<FN>
------------------------
*     The  California Municipal  Money Market  Fund Class  A and  Class B 
shares
      commenced  operations  on   February  8,   1993  and   January  6,   
1994,
      respectively.
(1)   Net  investment income  before waiver of  fees by  the Investment 
Adviser,
      Administrator, Custodian and  Transfer Agent, and  expenses reimbursed  
by
      the  Investment Adviser  and Administrator  for Class  A and  Class B 
were
      $0.0058 and $0.0001, respectively.
(2)   Total return represents aggregate total return for the period indicated.
(3)   Full amount of shares offered  to the public on  January 6, 1994 and  
were
      redeemed  on January  11, 1994,  therefore total  return deemed  not ot 
be
      meaningful.
(4)   Total net assets for Class B was $100 at January 31, 1994.
(5)   Annualized.
</TABLE>
 
                                       3
<PAGE>
<TABLE>
<S>   <C>
(6)   Annualized expense ratio before waiver of fees by the Investment  
Adviser,
      Administrator, Custodian and Transfer Agent and expenses reimbursed by 
the
      Investment  Adviser  and Administrator  for Class  A and  Class B  for 
the
      fiscal year ended January 31, 1994 were 1.80% and 2.05%, respectively  
and
      for Class A for the period ended July 31, 1993 were 2.47%.
</TABLE>
 
                       INVESTMENT OBJECTIVE AND POLICIES
 
IN GENERAL
 
    The Fund's investment objective is to provide investors with as high a 
level
of  current income exempt from  federal income tax and,  to the extent 
possible,
from California  state  personal  income  tax as  is  consistent  with  
relative
stability  of  principal. All  or a  portion of  the Fund's  dividends may  be 
a
specific tax  preference  item  for  purposes  of  the  federal  individual  
and
corporate alternative minimum taxes.
 
    In  pursuing  its  investment  objective,  the  Fund,  which  operates  as 
a
non-diversified investment company, invests substantially  all of its assets  
in
debt  obligations issued by  or on behalf  of the State  of California and 
other
states, territories  and  possessions of  the  United States,  the  District  
of
Columbia  and  their  respective  authorities,  agencies,  instrumentalities 
and
political sub-divisions,  and tax-exempt  derivative securities  such as  
tender
option  bonds, participations,  beneficial interests  in trusts  and 
partnership
interests (collectively  "Municipal Obligations").  Dividends paid  by the  
Fund
that  are derived  from interest  on obligations  that are  exempt from 
taxation
under  the  Constitution  or  statutes  of  California  ("California   
Municipal
Obligations")  are exempt from  regular federal income  tax and California 
state
personal  income  tax.  California   Municipal  Obligations  include   
municipal
securities  issued by the  State of California  and its political sub-
divisions.
Dividends derived from interest on  Municipal Obligations other than  
California
Municipal  Obligations are exempt from federal income  tax but may be subject 
to
California state  personal income  tax.  The Fund  expects that,  except  
during
temporary  defensive periods,  the Fund's assets  will be  invested primarily 
in
California Municipal  Obligations,  although the  amount  of the  Fund's  
assets
invested  in such securities  will vary from time  to time. At  least 50% of 
the
Fund's assets must be invested in  such obligations and Federal Obligations  
(as
defined under "Taxes" below) at the close of each quarter of its taxable year 
so
as  to permit the  Fund to pay  dividends that are  exempt from California 
state
personal income tax. Dividends,  regardless of their source,  may be subject  
to
local taxes.
 
    PRICE  AND  PORTFOLIO  MATURITY.    The  Fund  will  not  knowingly 
purchase
securities the interest on which is subject to regular federal income tax. 
(See,
however, "Taxes" below concerning treatment of exempt-interest dividends paid 
by
the Fund  for purposes  of the  federal alternative  minimum tax  applicable  
to
particular classes of investors.) Except during temporary defensive periods, 
the
Fund  will invest substantially all, but in no event less than 80%, of its 
total
assets in Municipal Obligations with remaining maturities of thirteen months  
or
less  as determined in accordance with the  rules of the Securities and 
Exchange
Commission. The Fund maintains a  dollar-weighted average portfolio maturity  
of
90  days or  less. The Fund  follows these  policies to maintain  a constant 
net
asset value of $1.00 per share, although there is no assurance it can do so on 
a
continuing basis. The Fund may hold uninvested cash reserves pending  
investment
during   temporary  defensive   periods,  including   when  suitable  tax-
exempt
obligations are unavailable. Uninvested cash reserves will not earn income.
 
    PORTFOLIO  QUALITY  AND  DIVERSIFICATION.    The  Fund  will  purchase  
only
Municipal  Obligations  which  are  "Eligible  Securities"  (as  defined  by 
the
Securities and Exchange Commission)  and which present  minimal credit risks  
as
determined  by the  Investment Adviser  pursuant to  guidelines approved  by 
the
Trust's Board of Trustees.
 
                                       4
<PAGE>
Eligible Securities consist  of (i) instruments  that are rated  at the time  
of
purchase  in one of the  top two rating categories  by at least two 
unaffiliated
nationally  recognized   statistical  rating   organizations  ("NRSROs"),   
(ii)
instruments  rated in one of the top two rating categories by one such NRSRO 
(if
only one such organization  rates the instrument),  (iii) instruments issued  
by
issuers  with short-term debt having such  ratings, and (iv) unrated 
instruments
determined by the  Investment Adviser,  pursuant to procedures  approved by  
the
Board of Trustees, to be of comparable quality. The Appendix to the Statement 
of
Additional Information includes a description of applicable NRSRO ratings.
 
INVESTMENT LIMITATIONS
 
    There  can  be  no  assurance  that the  Fund  will  achieve  its 
investment
objective. The Fund's investment objective and the policies described herein 
may
be changed by the Trust's Board of Trustees without the affirmative vote of  
the
holders  of a majority of the Fund's  outstanding shares, except that the 
Fund's
policy of investing at least 80% of its assets in Municipal Obligations and  
the
following  investment limitations are fundamental and may not be changed 
without
such a vote of shareholders. (A complete list of the investment limitations 
that
cannot be changed without a vote  of shareholders is contained in the  
Statement
of Additional Information under "Investment Objective and Policies.")
 
    The Fund may not:
 
        1.   Borrow money except  from banks for temporary  purposes and then 
in
    amounts not exceeding 10%  of the value of  the Fund's assets; or  
mortgage,
    pledge  or  hypothecate  its  assets  except  in  connection  with  any 
such
    borrowing and in amounts not in excess  of the lesser of the dollar  
amounts
    borrowed  or 10% of the value of the Fund's total assets at the time of 
such
    borrowing. Additional investments will not be made when borrowings exceed 
5%
    of the Fund's assets.
 
        2.  Purchase any securities which would  cause 25% or more of the  
value
    of its total assets at the time of purchase to be invested in the 
securities
    of  issuers  conducting  their  principal business  activities  in  the 
same
    industry; provided  that  this  limitation  shall  not  apply  to  
Municipal
    Obligations   or  governmental  guarantees  of  Municipal  Obligations;  
and
    provided further that, for the  purpose of this limitation only,  
industrial
    development bonds that are considered to be issued by non-governmental 
users
    (see  the  third investment  limitation  below) shall  not  be deemed  to 
be
    Municipal Obligations; and  provided, further, that  there is no  
limitation
    with respect to investments in U.S. government securities.
 
        3.  Purchase the securities of any issuer if as a result more than 5% 
of
    the  value of the Fund's assets would  be invested in the securities of 
such
    issuer, except that (a) up to 50% of  the value of the Fund's assets may  
be
    invested  without regard to  this 5% limitation; provided  that no more 
than
    25% of the value of the Fund's assets are invested in the securities of  
any
    one  issuer and  (b) this  5% limitation does  not apply  to U.S. 
government
    securities. For purposes of this limitation, a security is considered to  
be
    issued  by the governmental  entity (or entities)  whose assets and 
revenues
    back the  security, or,  with respect  to a  private activity  bond that  
is
    backed  only by the assets and revenues  of a non-governmental user, by 
such
    non-governmental  user.  In  certain  circumstances,  the  guarantor  of   
a
    guaranteed  security may  also be considered  to be an  issuer in 
connection
    with such guarantee,  except that  a guarantee of  a security  shall not  
be
    deemed  to  be a  security issued  by the  guarantor when  the value  of 
all
    securities issued and guaranteed by the guarantor and owned by the Fund 
does
    not exceed 10% of the value of the Fund's total assets.
 
                                       5
<PAGE>
    Opinions relating  to  the validity  of  Municipal Obligations  and  to  
the
exemption  of interest  thereon from  federal income  tax (and,  with respect 
to
California Municipal  Obligations, to  the exemption  of interest  thereon  
from
California  state  personal income  tax)  are rendered  by  bond counsel  to 
the
respective issuers  at  the time  of  issuance,  and opinions  relating  to  
the
validity  of and  the tax-exempt  status of payments  received by  the Fund 
from
tax-exempt derivatives are  rendered by  counsel to the  respective sponsors  
of
such derivatives. The Fund and its Investment Adviser will rely on such 
opinions
and  will not  review independently the  underlying proceedings  relating to 
the
issuance of Municipal Obligations, the creation of any tax-exempt derivatives 
or
the bases for such opinions.
 
TYPES OF MUNICIPAL OBLIGATIONS
 
    The two principal classifications of Municipal Obligations which may be 
held
by the  Fund  are  "general obligation"  securities  and  "revenue"  
securities.
General  obligation securities  are secured by  the issuer's pledge  of its 
full
faith, credit  and taxing  power  for the  payment  of principal  and  
interest.
Revenue  securities are payable only from the revenues derived from a 
particular
facility or  class of  facilities or,  in some  cases, from  the proceeds  of  
a
special  excise tax  or other specific  revenue source  such as the  user of 
the
facility being financed. Revenue securities may include private activity  
bonds.
Such  bonds  may be  issued by  or on  behalf of  public authorities  to 
finance
various privately operated facilities, and are not payable from the 
unrestricted
revenues of the  issuer. As  a result, the  credit quality  of private  
activity
bonds  is  frequently  related  directly  to  the  credit  standing  of  
private
corporations or other entities.
 
    The Tax Reform  Act of 1986  substantially revised provisions  of prior  
law
affecting  the issuance and use of proceeds of certain tax-exempt obligations. 
A
new definition of  private activity bonds  was applied to  many types of  
bonds,
including  those  which  were  industrial  development  bonds  under  prior 
law.
Interest on private activity bonds is  tax-exempt only if the bonds fall  
within
certain  defined categories  of qualified  private activity  bonds and  meet 
the
requirements specified in those respective categories. The Act generally did 
not
change the tax treatment of bonds issued to finance governmental operations. 
The
changes generally apply  to bonds  issued after  August 15,  1986, with  
certain
transitional  rule exemptions.  As used  in this  Prospectus, the  term 
"private
activity bonds"  also  includes  industrial  development  revenue  bonds  
issued
pursuant to the Internal Revenue Code of 1986, as amended.
 
    The  Fund's portfolio may also  include "moral obligation" securities, 
which
are normally issued  by special  purpose public  authorities. If  the issuer  
of
moral  obligation securities is unable to meet its debt service obligations 
from
current revenues, it may draw on a  reserve fund, the restoration of which is  
a
moral  commitment but not a  legal obligation of the  state or municipality 
that
created the issuer.
 
OTHER INVESTMENT PRACTICES
 
    Municipal Obligations purchased by the Fund may include variable rate 
demand
notes. Such notes may not be rated by credit rating agencies, but unrated  
notes
purchased  by the Fund will be determined by the Fund's Investment Adviser to 
be
of comparable quality at the time  of purchase to rated instruments  
purchasable
by  the Fund. Where necessary to ensure that a note is an Eligible Security, 
the
Fund will require that the issuer's obligation to pay the principal of the  
note
be  backed  by  an conditional  bank  letter  or line  of  credit,  guarantee 
or
commitment to lend. While there may  be no active secondary market with  
respect
to  a particular variable rate demand note  purchased by the Fund, the Fund 
may,
upon the notice specified in  the note, demand payment  of the principal of  
the
note  at any  time or  during specified  periods not  exceeding thirteen 
months,
depending upon
 
                                       6
<PAGE>
the instrument involved, and may resell the  note at any time to a third  
party.
The  absence  of  such  an  active secondary  market,  however,  could,  in 
some
instances, make it difficult for the Fund  to dispose of a variable rate  
demand
note  if the issuer were to default  on its payment obligation or during 
periods
that the Fund is not entitled to exercise its demand rights, and the Fund 
could,
for this or other reasons, suffer a loss to the extent of the default. While, 
in
general, the Fund  will invest only  in securities that  mature within  
thirteen
months of purchase, the Fund may invest in variable rate demand notes which 
have
nominal  maturities  in excess  of thirteen  months,  if such  instruments 
carry
demand features that comply  with conditions established  by the Securities  
and
Exchange Commission.
 
    The  Fund may also purchase Municipal  Obligations on a "when-issued" 
basis.
When-issued securities are securities purchased  for delivery beyond the  
normal
settlement date at a stated price and yield. The Fund will generally not pay 
for
such  securities  or start  earning interest  on them  until they  are 
received.
Securities purchased on  a when-issued basis  are recorded as  an asset and  
are
subject  to changes in value based upon changes in the general level of 
interest
rates. The Fund expects that commitments to purchase when-issued securities 
will
not exceed  25%  of  the  value  of  its  total  assets  absent  unusual  
market
conditions.  The Fund  does not  intend to  purchase when-issued  securities 
for
speculative purposes but only in furtherance of its investment objective.
 
    In addition, the  Fund may  acquire "stand-by commitments"  with respect  
to
Municipal  Obligations held  in its  portfolio. Under  a stand-by  commitment, 
a
dealer agrees to purchase at  the Fund's option specified Municipal  
Obligations
at  a  specified price.  The Fund  will acquire  stand-by commitments  solely 
to
facilitate portfolio  liquidity  and does  not  intend to  exercise  its  
rights
thereunder for trading purposes.
 
    The  Fund  may purchase  tender  option bonds.  A  tender option  bond  is 
a
municipal obligation (generally held pursuant to a custodial arrangement) 
having
a relatively long maturity  and bearing interest at  a fixed rate  
substantially
higher  than prevailing short-term tax-exempt rates,  that has been coupled 
with
the agreement of a third party, such as a bank, broker-dealer or other 
financial
institution, pursuant to which such institution grants the security holders  
the
option, at periodic intervals, to tender their securities to the institution 
and
receive  the face value thereof. As  consideration for providing the option, 
the
financial institution receives periodic fees equal to the difference between 
the
municipal obligation's  fixed coupon  rate  and the  rate,  as determined  by  
a
remarketing  or similar agent at  or near the commencement  of such period, 
that
would cause the securities, coupled with the tender option, to trade at or  
near
par  on the  date of such  determination. Thus,  after payment of  this fee, 
the
security holder effectively holds a demand obligation that bears interest at 
the
prevailing short-term  tax  exempt  rate. The  Fund's  Investment  Adviser  
will
consider  on  an  ongoing  basis  the  creditworthiness  of  the  issuer  of 
the
underlying municipal  obligation,  of  any  Custodian and  of  the  third  
party
provider  of  the tender  option. In  certain instances  and for  certain 
tender
option bonds, the option may be terminable in the event of a default in  
payment
of  principal or interest on the  underlying municipal obligations and for 
other
reasons. Additionally, the  above description  of tender option  bonds is  
meant
only  to provide an example  of one possible structure  of such obligations, 
and
the Fund may  purchase tender option  bonds with different  types of  
ownership,
payment, credit and/or liquidity arrangement.
 
    The  Fund  may acquire  custodial receipts  or certificates  underwritten 
by
securities dealers or banks that evidence ownership of future interest 
payments,
principal payments or both, on certain municipal obligations. The underwriter 
of
these certificates  or receipts  typically purchases  municipal obligations  
and
deposits  the obligations  in an irrevocable  trust or custodial  account with 
a
custodian bank, which then issues receipts or
 
                                       7
<PAGE>
certificates that evidence ownership of  the periodic unmatured coupon  
payments
and  the final principal payment on the obligations. Although under the terms 
of
a custodial receipt, the Fund would be typically authorized to assert its 
rights
directly against the  issuer of  the underlying  obligation, the  Fund could  
be
required  to assert through the custodian bank those rights as may exist 
against
the underlying issuer.  Thus, in the  event the underlying  issuer fails to  
pay
principal  and/or interest when due, the Fund may be subject to delays, 
expenses
and risks that are greater than those that would have been involved if the  
Fund
had  purchased a direct obligation of the issuer. In addition, in the event 
that
the trust  or  custodial account  in  which  the underlying  security  has  
been
deposited is determined to be an association taxable as a corporation instead 
of
a  non-taxable entity, the yield on the  underlying security would be reduced 
in
recognition of any taxes paid.
 
    The Fund may purchase  from financial institutions tax-exempt  
participation
interests  in Municipal Obligations. A participation  interest gives the Fund 
an
undivided interest in the Municipal Obligation in the proportion that the 
Fund's
participation interest bears to  the total amount  of the Municipal  
Obligation.
These  instruments  may have  floating  or variable  rates  of interest.  If 
the
participation interest is unrated, it will be backed by an irrevocable letter 
of
credit or guarantee of a bank that the Trust's Board of Trustees has  
determined
meets  certain quality  standards or  the payment  obligation otherwise  will 
be
collateralized by  obligations  of the  U.S.  Government and  its  agencies  
and
instrumentalities.  The  Fund  will  have the  right,  with  respect  to 
certain
participation interests,  to demand  payment,  on a  specified number  of  
days'
notice,  for all or any part of the Fund's interest in the Municipal 
Obligation,
plus accrued interest. The Fund will invest no more than 5% of its total  
assets
in participation interests.
 
    The  Fund will not knowingly invest more than  10% of the value of its 
total
net assets in  illiquid securities,  including securities that  are illiquid  
by
virtue  of the  absence of  a readily available  market or  legal or 
contractual
restrictions on resale. Securities that  have legal or contractual  
restrictions
on  resale  but have  a readily  available  market are  not deemed  illiquid 
for
purposes of  this limitation.  The Fund's  Investment Adviser  will monitor  
the
liquidity  of such restricted  securities under the supervision  of the Board 
of
Trustees. See  "Investment Objective  and Policies--Additional  Information  
and
Investment  Practices--Illiquid  Securities"  in  the  Statement  of  
Additional
Information.
 
RISK FACTORS
 
    The Fund intends to  follow the diversification standards  set forth in  
the
Investment  Company Act  of 1940,  as amended  (the "1940  Act"), except  to 
the
extent, in the judgment of  the Investment Adviser, that non-diversification  
is
appropriate  in order to maximize  the percentage of the  Fund's assets that 
are
California Municipal  Obligations. The  investment return  on a  non-
diversified
portfolio  typically is  dependent upon the  performance of a  smaller number 
of
issuers relative to the  number of issuers held  in a diversified portfolio.  
In
the event of changes in the financial condition or in the market's assessment 
of
certain issuers, the Fund's maintenance of large positions in the obligations 
of
a  small number  of issuers may  affect the value  of the Fund's  portfolio to 
a
greater extent than that of a diversified portfolio.
 
    Although the Fund does not presently intend to do so on a regular basis,  
it
may  invest more than 25% of its assets in Municipal Obligations the interest 
on
which is paid  solely from revenues  on similar projects  if such investment  
is
deemed  necessary or appropriate by the Fund's Investment Adviser. To the 
extent
that the Fund's assets  are concentrated in  Municipal Obligations payable  
from
revenues on similar projects, are issued by
 
                                       8
<PAGE>
issuers  located in California or  are private activity bonds,  the Fund will 
be
subject to the particular risks presented by such state, projects and bonds to 
a
greater extent than it would be if the Fund's assets were not so concentrated.
 
    The Fund's ability  to achieve  its investment objective  is dependent  
upon
various  factors, including the  ability of the  issuers of California 
Municipal
Obligations to meet  their continuing  payment obligations with  respect to  
the
municipal obligations in a timely manner. Currently, the State of California 
and
many   other  issuers  of  California  Municipal  Obligations  are  
experiencing
financial and budgetary problems which could affect their ability to meet  
their
financial  obligations  in  a timely  manner.  Any resulting  reductions  in 
the
creditworthiness of issuers of California Municipal Obligations could  
adversely
affect  the market values and marketability of California Municipal 
Obligations,
and, consequently, the net asset value of the Fund's portfolio.
 
    On July  15,  1992  and  July  6,  1992,  respectively,  Standard  &  
Poor's
Corporation   and  Moody's  Investors   Service,  Inc.,  citing   the  State  
of
California's deteriorating  financial position,  lowered  their ratings  of  
the
State's  general obligation bonds from  AA and Aa2, respectively,  to A+ and 
Aa,
respectively.
 
    Certain  California   constitutional   amendments,   legislative   
measures,
executive  orders, administrative regulations and voter initiatives could 
result
in certain  adverse  consequences affecting  California  Municipal  
Obligations.
Significant   financial  and   other  considerations  relating   to  the  
Fund's
investments in California Municipal Obligations are summarized in the  
Statement
of Additional Information.
 
    The  value  of  the Fund's  portfolio  securities  can be  expected  to 
vary
inversely with changes in prevailing interest rates.
 
                       PURCHASE AND REDEMPTION OF SHARES
 
PURCHASE PROCEDURES
 
    Shares of the Fund  are sold at the  net asset value per  share of the  
Fund
next  determined  after receipt  of  a purchase  order  by Lehman  Brothers, 
the
Distributor of the Fund's shares. Purchase orders for shares are accepted by 
the
Fund only on a day on which both Lehman Brothers and the Federal Reserve Bank 
of
Boston are open  for business  and must be  transmitted to  Lehman Brothers,  
by
telephone  at 1-800-851-3134. Orders received prior  to noon, Eastern time 
(9:00
A.M., Pacific time), for which payment has been received by Boston Safe  
Deposit
and  Trust Company  ("Boston Safe"), the  Fund's Custodian, will  be executed 
at
noon. Orders received prior to noon  for which payment is received between  
noon
and  4:00 P.M., Eastern time (1:00 P.M., Pacific time), will be executed at 
4:00
P.M., Eastern time. Orders received after noon, and orders for which payment 
has
not been received by 4:00 P.M., Eastern time (1:00 P.M., Pacific time), will 
not
be accepted and  notice thereof  will be given  to the  institution placing  
the
order.  Payment for Fund  shares may be  made only in  federal funds 
immediately
available to Boston Safe. (Payment for orders which are not received or 
accepted
by Lehman  Brothers  will  be  returned after  prompt  inquiry  to  the  
sending
institution.) The Fund may in its discretion reject any order for shares.
 
    The minimum aggregate initial investment by an institution in the 
investment
portfolios  that comprise the  Trust is $1  million (with not  less than 
$25,000
invested  in   any   one   investment   portfolio   offered   by   the   
Trust);
 
                                       9
<PAGE>
however,  broker-dealers  and other  institutional  investors may  set  a 
higher
minimum for their customers. To reach the minimum Trust-wide initial 
investment,
purchases of shares may be aggregated over  a period of six months. There is  
no
minimum subsequent investment.
 
    Conflict  of interest restrictions may apply  to an institution's receipt 
of
compensation paid by  the Fund in  connection with the  investment of  
fiduciary
funds  that  in  Class  B  or  Class  C  shares.  See  also  "Management  of 
the
Fund--Service Organizations."  Institutions, including  banks regulated  by  
the
Comptroller  of the  Currency and investment  advisers and  other money 
managers
subject to  the jurisdiction  of  the Securities  and Exchange  Commission,  
the
Department  of  Labor  or  state securities  commissions,  should  consult 
legal
counsel before investing in Class B or Class C shares.
 
    SUBACCOUNTING SERVICES.  Institutions are  encouraged to open single  
master
accounts.  However, certain  Institutions may wish  to use  the Transfer 
Agent's
subaccounting system to minimize their internal recordkeeping requirements.  
The
Transfer  Agent  charges a  fee  based on  the  level of  subaccounting 
services
rendered. Institutions holding Fund shares in a fiduciary, agency, custodial  
or
similar  capacity may charge or pass through subaccounting fees as part of or 
in
addition to normal trust or agency account  fees. They may also charge fees  
for
other  services provided which may  be related to the  ownership of Fund 
shares.
This Prospectus should, therefore, be  read together with any agreement  
between
the  customer and the institution with regard to the services provided, the 
fees
charged for those services and any restrictions and limitations imposed.
 
REDEMPTION PROCEDURES
 
    Redemption orders must  be transmitted  to Lehman Brothers  by telephone  
at
1-800-851-3134.  Payment for  redeemed shares  for which  a redemption  order 
is
received by Lehman Brothers before noon, Eastern time (9:00 A.M., Pacific  
time)
on  a day that both  Lehman Brothers and the Federal  Reserve Bank of Boston 
are
open for  business is  normally made  in federal  funds wired  to the  
redeeming
shareholder  on the same business  day. Payment for redeemed  shares for which 
a
redemption order is received by Lehman  Brothers after noon, Eastern time  
(9:00
A.M.,  Pacific time), on such  a business day is  normally made in federal 
funds
wired  to  the  redeeming  shareholder  on  the  next  business  day   
following
redemption. The Fund reserves the right to wire redemption proceeds within 
seven
days  after receiving the redemption order if, in the judgment of the 
investment
adviser and/or sub-investment adviser, an earlier payment could adversely 
affect
the Fund.
 
    Shares are redeemed at the net  asset value per share next determined  
after
Lehman  Brothers' receipt of the redemption order. While the Fund intends to 
use
its best  efforts to  maintain  its net  asset value  per  share at  $1.00,  
the
proceeds paid to an investor upon redemption may be more or less than the 
amount
invested  depending upon a share's net asset value at the time of redemption. 
To
allow the Fund's Investment  Adviser to manage  the Fund effectively,  
investors
are  strongly urged to initiate all investments or redemptions of Fund shares 
as
early in the day as possible and to  notify Lehman Brothers at least one day  
in
advance of transactions in excess of $5 million.
 
    The  Fund reserves the  right to wire redemption  proceeds within seven 
days
after receiving the  redemption order  if, in  the judgement  of the  
Investment
Advisor, an earlier payment could adversely affect the Fund. The Fund shall 
have
the right to redeem shares involuntarily in any account at their net asset 
value
if  the value of the  account is less than $10,000  after 60 days' prior 
written
notice to the investor. Any such redemption  shall be effected at the net  
asset
value per share next determined after the redemption order is entered. If 
during
the  60-day period the investor increases the value of its account to $10,000 
or
more, no such redemption shall take
 
                                       10
<PAGE>
place. In addition,  the Fund  may redeem  shares involuntarily  or suspend  
the
right  of redemption as permitted  under the 1940 Act,  or under certain 
special
circumstances  described  in  the  Statement  of  Additional  Information  
under
"Additional Purchase and Redemption Information."
 
VALUATION OF SHARES--NET ASSET VALUE
 
    The  Fund's net asset value  per share for purposes  of pricing purchase 
and
redemption orders is determined by the Fund's Administrator as of noon and  
4:00
P.M., Eastern time (1:00 P.M., Pacific time) on each weekday, with the 
exception
of  those holidays on  which either the  New York Stock  Exchange or the 
Federal
Reserve Bank of Boston is closed.  Currently, one or both of these  
institutions
are  closed on  New Year's Day,  Martin Luther King,  Jr.'s Birthday 
(observed),
Presidents' Day (Washington's Birthday), Good Friday, Memorial Day, 
Independence
Day, Labor  Day, Columbus  Day (observed),  Veterans Day,  Thanksgiving Day  
and
Christmas  Day, and  on the  preceding Friday or  subsequent Monday  when one 
of
these holidays falls on a Saturday or Sunday, respectively. The net asset  
value
per  share of the Fund  is calculated by adding the  value of all securities 
and
other assets belonging  to the  Fund, subtracting liabilities  and dividing  
the
result  by the number of the Fund's outstanding shares. Portfolio securities 
are
valued on the  basis of amortized  cost. Under  this method, the  Fund values  
a
portfolio  security at  cost on  the date of  purchase and  thereafter assumes 
a
constant amortization of any discount or premium until maturity of the 
security.
As a result, the  value of the  security for purposes  of determining net  
asset
value  normally does not change in response to fluctuating interest rates. 
While
the amortized cost method seems to provide certainty in portfolio valuation,  
it
may  result in periods during which values, as determined by amortized cost, 
are
higher or  lower  than  the  amount  the Fund  would  receive  if  it  sold  
the
securities.  The Fund's  net asset  value for  purposes of  pricing purchase 
and
redemption orders is  determined independently  of the  net asset  value of  
the
shares of the Trust's other investment portfolios.
 
OTHER MATTERS
 
    Fund  shares are sold and redeemed without charge by the Fund. 
Institutional
investors purchasing or holding  Fund shares for  their customers' accounts  
may
charge  customers  fees  for  cash management  and  other  services  provided 
in
connection with their accounts. A customer should, therefore, consider the 
terms
of its account with an institution before purchasing Fund shares. An 
institution
purchasing or redeeming  shares on behalf  of its customers  is responsible  
for
transmitting   orders  to  Lehman  Brothers  in  accordance  with  its  
customer
agreements.
 
                                   DIVIDENDS
 
    Investors of the Fund  are entitled to  dividends and distributions  
arising
only  from  the net  investment  income and  capital  gains, if  any,  earned 
on
investments held by the Fund. The Fund's net investment income is declared 
daily
as a dividend to shares held  of record at the close  of business on the day  
of
declaration.  Shares begin accruing dividends on  the day the purchase order 
for
the shares is executed and continue to accrue dividends through, and  
including,
the  day before the redemption  order for the shares  is executed. Dividends 
are
paid monthly by wire  transfer within five  business days after  the end of  
the
month  or within five business  days after a redemption  of all of an 
investor's
shares of a particular class. The Fund does not expect to realize net  long-
term
capital gains.
 
                                       11
<PAGE>
    Dividends  are determined in the same manner and are paid in the same 
amount
for each  Fund share,  except that  Class  B and  Class C  shares bear  all  
the
expenses  of fees paid to Service Organizations. As a result, at any given 
time,
the net yield on Class B and Class C shares will be .25% and .35%, 
respectively,
lower than the net yield on Class A shares.
 
    Institutional investors  may elect  to have  their dividends  reinvested  
in
additional  full and fractional shares of the  same class at the net asset 
value
of such shares on  the payment date. Reinvested  dividends receive the same  
tax
treatment  as dividends paid in cash.  Such election, or any revocation 
thereof,
must be made in writing to the  Fund's Distributor at 260 Franklin Street,  
15th
Floor,  Boston, Massachusetts 02110-9624, and will become effective with 
respect
to dividends paid after its receipt by TSSG.
 
    **1 TSSG,  as Transfer  Agent, will  send each  investor or  its  
authorized
representative,  if  any,  an annual  statement  designating the  amount  of 
any
dividends and  capital  gains distributions  made  during each  year  and  
their
federal and California tax qualification.
 
                                     TAXES
 
    **2  The Fund qualified in  its last taxable year  and intends to qualify 
in
future years as a "regulated investment company" under the Internal Revenue 
Code
of 1986, as amended (the "Code"). A regulated investment company is exempt  
from
federal  income and California franchise and income taxes on amounts 
distributed
to its shareholders. Qualification as  a regulated investment company under  
the
Code  for a taxable year requires, among  other things, that the Fund 
distribute
to its investors at least  the sum of 90% of  its exempt-interest income net  
of
certain  deductions and  90% of its  investment company taxable  income for 
such
year. Dividends derived from  exempt-interest income (known as  "exempt-
interest
dividends")  may  be  treated  by  the Fund's  investors  as  items  of 
interest
excludable from their  gross income  under Section  103(a) of  the Code,  
unless
under  the  circumstances applicable  to the  particular investor  the 
exclusion
would  be  disallowed.  (See  the  Statement  of  Additional  Information  
under
"Additional Information Concerning Taxes.")
 
    **3  The Fund may  hold without limit certain  private activity bonds 
issued
after August 7, 1986. Investors must include, as an item of tax preference,  
the
portion  of dividends paid by the Fund  that is attributable to interest on 
such
bonds in  their  federal alternative  minimum  taxable income  for  purposes  
of
determining liability (if any) for the 24% alternative minimum tax applicable 
to
individuals  and  the  20% alternative  minimum  tax and  the  environmental 
tax
applicable  to   corporations.   Corporate   investors  must   also   take   
all
exempt-interest  dividends into  account in determining  certain adjustments 
for
alternative minimum  and  environmental  tax  purposes.  The  environmental  
tax
applicable  to corporations is imposed at the rate  of .12% on the excess of 
the
corporation's  modified  federal   alternative  minimum   taxable  income   
over
$2,000,000.  Investors receiving Social Security benefits or Railroad 
Retirement
Act benefits should note that all  exempt-interest dividends will be taken  
into
account in determining the taxability of such benefits.
 
    **4  Dividends that are paid by the  Fund to non-corporate investors and 
are
derived from interest on California Municipal Obligations (as defined above)  
or
Federal  Obligations are also exempt from  California state personal income 
tax.
For this purpose, Federal Obligations are  obligations the interest on which  
is
excludable   from  gross  income  for  state   income  tax  purposes  under  
the
Constitution or laws of the United States. However, dividends paid to  
corporate
investors  subject  to  California  state  franchise  tax  or  California  
state
corporate income  tax  will be  taxed  as  ordinary income  to  such  
investors,
notwithstanding that all or a portion of such
 
                                       12
<PAGE>
dividends  is exempt from California state personal income tax. Moreover, to 
the
extent that the Fund's dividends are  derived from interest on debt  
obligations
other  than  California  Municipal  Obligations  or  Federal  Obligations,  
such
dividends will be subject to California  state personal income tax, even  
though
such dividends may be exempt for federal income tax purposes.
 
    **5  Except as noted  with respect to California  state personal income 
tax,
dividends and distributions paid  to investors that are  derived from income  
on
Municipal Obligations may be taxable income under state or local law even 
though
all  or  a  portion  of  such distributions  may  be  derived  from  interest 
on
tax-exempt obligations that, if paid directly to investors, would be  tax-
exempt
income. To the extent, if any, that dividends paid to investors are derived 
from
taxable  income or  from long-term or  short-term capital  gains, such 
dividends
will not be exempt from federal  income tax or California state personal  
income
tax,  whether paid  in the form  of cash or  additional shares, and  may also 
be
subject to other state and local taxes.
 
    **6 Dividends declared in October, November or December of any year  
payable
to investors of record on a specified date in such months will be deemed to 
have
been  received by the investors and paid by the Fund on December 31 of such 
year
in the event such  dividends are actually paid  during January of the  
following
year.
 
    **7 Investors will be advised at least annually as to the federal income 
tax
as  well as the California state personal income tax, status and consequences 
of
dividends and distributions made each year.
 
    **8 The foregoing  is only  a brief  summary of  some of  the important  
tax
considerations  generally affecting  the Fund and  its investors.  No attempt 
is
made to present a detailed explanation of the federal, state or local income 
tax
treatment of the Fund or its investors, and this discussion is not intended as 
a
substitute for careful  tax planning.  Accordingly, potential  investors in  
the
Fund  should consult their tax advisors with specific reference to their own 
tax
situations.
 
                             MANAGEMENT OF THE FUND
 
    The business and affairs of the Fund are managed under the direction of  
the
Trust's  Board  of Trustees.  The  Trustees approve  all  significant 
agreements
between the Trust  and the  persons or companies  that furnish  services to  
the
Fund,   including   agreements   with  its   Distributor,   Investment  
Adviser,
Administrator, Custodian and  Transfer Agent. The  day-to-day operations of  
the
Fund  are  delegated to  the Fund's  Investment  Adviser and  Administrator. 
The
Statement of  Additional  Information  relating to  the  Fund  contains  
general
background  information  regarding each  Trustee  and executive  officer  of 
the
Trust.
 
DISTRIBUTOR
 
    Lehman Brothers, located  at 3 World  Financial Center, New  York, New  
York
10285,  is the Distributor of the Fund's shares, Lehman Brothers, a leading 
full
service investment  firm,  meets the  diverse  financial needs  of  
individuals,
institutions  and governments around the world. Lehman Brothers has entered 
into
a  Distribution  Agreement  with  the  Trust  pursuant  to  which  it  has   
the
responsibility for distributing shares of the Fund.
 
INVESTMENT ADVISER--LEHMAN GLOBAL ASSET MANAGEMENT
 
    Lehman  Brothers Global Asset Management Inc.  ("LBGAM"), located at 3 
World
Financial Center, New  York, New  York 10285,  serves as  the Fund's  
Investment
Adviser.  LBGAM is  a wholly  owned subsidiary  of Lehman  Brothers, which  is 
a
wholly  owned  subsidiary  of   Lehman  Brothers  Holdings  Inc.   
("Holdings").
 
                                       13
<PAGE>
LBGAM,  together  with  other Lehman  Brothers  Investment  Advisory 
affiliates,
serves as Investment Adviser  to investment companies  and private accounts  
and
has assets under management in excess of [$15] billion as of          , 1994.
 
    As   Investment  Adviser  to  the  Fund,  LBGAM  will  among  other  
things,
participate in  the  formulation  of the  Fund's  investment  policies,  
analyze
economic  trends  affecting  the  Fund,  and  monitor  and  evaluate  the 
Fund's
investment objective and policies and the Fund's investment performance. For 
its
services LBGAM is entitled to receive a monthly fee from the Fund at the  
annual
rate of .10% of the value of the Fund's average daily net assets. For the 
period
February  8,  1993  (commencement  of operations)  to  January  31,  1994, 
LBGAM
received an advisory fee from the Fund in the amount of .   % of, average  
daily
net assets.
 
ADMINISTRATOR AND TRANSFER AGENT--THE SHAREHOLDER SERVICES GROUP, INC.
 
    The  Shareholder  Services Group,  Inc.  ("TSSG"), located  at  One 
Exchange
Place, 53  State  Street, Boston,  Massachusetts  02109, serves  as  the  
Fund's
Administrator  and Transfer  Agent. TSSG is  a wholly owned  subsidiary of 
First
Data Corporation. As Administrator, TSSG calculates  the net asset value of  
the
Fund's  shares and generally assists in all aspects of the Fund's 
administration
and operation. As  compensation for  TSSG's services as  Administrator, TSSG  
is
entitled  to receive from the Fund  a monthly fee at the  annual rate of .10% 
of
the value of  the Fund's  average daily  net assets.  TSSG is  also entitled  
to
receive a fee from the Fund for its services as Transfer Agent. TSSG pays 
Boston
Safe,  the Fund's  Custodian, a  portion of  its monthly  administration fee 
for
custody services rendered to the Fund.
 
CUSTODIAN--BOSTON SAFE DEPOSIT AND TRUST COMPANY
 
    Boston Safe, a wholly owned subsidiary  of The Boston Company Inc.,  
located
at  One  Boston  Place,  Boston,  Massachusetts  02108,  serves  as  the  
Fund's
Custodian.
 
SERVICE ORGANIZATIONS
 
    Financial institutions  such as  banks, savings  and loan  associations  
and
other such institutions ("Service Organizations") and/or institutional 
customers
of  Service Organizations may purchase  Class B or Class  C shares. These 
shares
are identical in all respects to Class  A shares except that they bear the  
fees
described below and enjoy certain exclusive voting rights on matters relating 
to
these fees. The Fund will enter into an agreement with each Service 
Organization
whose  customers ("Customers") are the  beneficial owners of Class  B or Class 
C
shares that requires  the Service  Organization to provide  certain services  
to
Customers  in consideration of the Fund's payment  of service fees at the 
annual
rate of .25% or .35%, respectively, of the average daily net asset value of  
the
respective  Class beneficially owned by the  Customers. Such services, which 
are
described  more  fully  in  the   Statement  of  Additional  Information   
under
"Management  of the  Fund--Service Organizations,"  may include  aggregating 
and
processing purchase  and  redemption requests  from  Customers and  placing  
net
purchase  and  redemption  orders  with  Lehman  Brothers;  processing  
dividend
payments  from  the   Fund  on  behalf   of  Customers;  providing   
information
periodically  to Customers showing their positions in shares; arranging for 
bank
wires; responding to Customer inquiries relating to the services provided by 
the
Service Organization  and  handling  correspondence; acting  as  shareholder  
of
record  and nominee; and providing reasonable  assistance in connection with 
the
distribution of shares to Customers. Services  provided with respect to Class  
B
shares  will generally be more limited than those provided with respect to 
Class
C shares. Under the terms of the agreements, Service Organizations are  
required
to  provide to their  Customers a schedule of  any fees that  they may charge 
to
their Customers  in connection  with their  investments in  Class B  or Class  
C
shares. Class A shares
 
                                       14
<PAGE>
are  sold to  financial institutions that  have not entered  into such 
servicing
agreements with the Fund in connection  with its investments. A salesperson  
and
any  other  person entitled  to receive  compensation  for selling  or 
servicing
shares of the Fund may receive  different compensation for selling or  
servicing
one Class of shares over another Class.
 
EXPENSES
 
    The  Fund bears all of its own  expenses. The Fund's expenses include 
taxes,
interest, fees and  salaries of the  Trust's trustees and  officers who are  
not
directors,  officers or employees of  the Fund's service contractors, 
Securities
and Exchange  Commission fees,  state securities  qualification fees,  costs  
of
preparing and printing prospectuses for regulatory purposes and for 
distribution
to  investors,  advisory  and  administration fees,  charges  of  the 
custodian,
transfer agent and dividend disbursing agent, Service Organization fees, 
certain
insurance premiums, outside  auditing and legal  expenses, costs of  
shareholder
reports  and shareholder meetings and any  extraordinary expenses. The Fund 
also
pays for brokerage fees and commissions (if any) in connection with the 
purchase
and sale of  portfolio securities. In  order to maintain  a competitive  
expense
ratio  during 1994, LBGAM and TSSG have agreed voluntarily to reimburse the 
Fund
if and to the extent that the Fund's total operating expenses (other than 
taxes,
interest, brokerage fees and commissions, Rule 12b-1 fees under the 1940 Act 
and
extraordinary expenses) exceed .16% of average daily net assets through 
December
31,  1994.  The  Investment  Adviser   and  Administrator  intend  to   
continue
voluntarily  to  reimburse  the Fund  to  the  extent necessary  to  maintain 
an
annualized expense ratio at a  level no greater than  .18% of average daily  
net
assets  thereafter.  This voluntary  reimbursement  will not  be  changed 
unless
investors are provided  at least  60 days'  advance notice.  In addition,  
these
service  providers have agreed to  reimburse the Fund to  the extent required 
by
applicable state law for certain expenses that are described in the Statement 
of
Additional Information  relating  to  the  Fund. Any  fees  charged  by  
Service
Organizations  or other institutional investors to their customers in 
connection
with investments in Fund shares are not reflected in the Fund's expenses.
 
                                     YIELDS
 
    **9 From time to time  the "yields," "effective yields" and  "tax-
equivalent
yields"  of  its  Class  A,  Class  B  and  Class  C  shares  may  be  quoted 
in
advertisements or  in  reports  to  investors.  Yield  quotations  are  
computed
separately  for each Class of shares. The "yield" quoted in advertisements for 
a
particular class or  sub-class of shares  refers to the  income generated by  
an
investment  in such shares over a specified  period (such as a seven-day 
period)
identified in the advertisement. This income is then "annualized"; that is,  
the
amount  of income generated by the investment  during that week is assumed to 
be
generated each week over a  52-week period and is shown  as a percentage of  
the
investment.  The "effective yield" is calculated similarly but, when 
annualized,
the income earned  by an  investment in  a particular  class of  Fund shares  
is
assumed to be reinvested. The "effective yield" will be slightly higher than 
the
"yield"  because of  the compounding  effect of  this assumed  reinvestment. 
The
"tax-equivalent yield"  demonstrates the  level of  taxable yield  necessary  
to
produce  an  after-tax yield  equivalent  to the  Fund's  tax-free yield.  It 
is
calculated by increasing the  Fund's yield (calculated as  above) by the  
amount
necessary  to reflect the  payment of federal  and California income  taxes at 
a
stated rate. The "tax-equivalent yield" will always be higher than the 
"yield."
 
   **10 The Fund's yields may  be compared to those  of other mutual funds  
with
similar  objectives, to bond or other  relevant indices, or to rankings 
prepared
by independent services or other financial or industry publications that 
monitor
the performance of mutual funds, or to  the average yields reported by the  
BANK
RATE MONITOR
 
                                       15
<PAGE>
from  money market deposit accounts  offered by the 50  leading banks and 
thrift
institutions in  the  top  five standard  metropolitan  statistical  areas.  
For
example,  such  data are  reported in  national  financial publications  such 
as
IBC/DONOGHUE'S MONEY FUND  REPORT-R-, IBBOTSON ASSOCIATES  OF CHICAGO, THE  
WALL
STREET  JOURNAL and  THE NEW YORK  TIMES, reports prepared  by Lipper 
Analytical
Services, Inc. and publications of a local or regional nature.
 
   **11  THE  FUND'S  YIELD  FIGURES  FOR  A  CLASS  OF  SHARES  REPRESENT  
PAST
PERFORMANCE,  WILL FLUCTUATE AND  SHOULD NOT BE  CONSIDERED AS REPRESENTATIVE 
OF
FUTURE RESULTS. The yield of any investment is generally a function of 
portfolio
quality and maturity, type of  investment and operating expenses. Since  
holders
of  Class B  or Class C  shares bear the  service fees for  services provided 
by
Service Organizations, the net yield on such shares can be expected at any 
given
time to be  lower than  the net yield  on Class  A shares. Any  fees charged  
by
Service  Organizations  or  other  institutional  investors  directly  to  
their
customers in connection with investments in Fund shares are not reflected in 
the
Fund's expenses or  yields. The methods  used to compute  the Fund's yields  
are
described  in more detail in the  Statement of Additional Information. 
Investors
may call 800-238-2560 (Class A shares code: 010; Class B shares code: 110; 
Class
C shares code: 210) to obtain current yield information.
 
    The yield, effective yield and tax-equivalent yield for Class A and Class  
B
shares  for the Fund for the  seven-day period ended January 31,  1994 were   
%,
  %,   % and   ,   %, and   %, respectively.
 
                             DESCRIPTION OF SHARES
 
     *1 moved from here; text not shown
 
     *2 moved from here; text not shown
 
     *3 moved from here; text not shown
 
     *4 moved from here; text not shown
 
     *5 moved from here; text not shown
 
     *6 moved from here; text not shown
 
     *7 moved from here; text not shown
 
     *8 moved from here; text not shown
 
    The Trust was organized  as a Massachusetts business  trust on November  
25,
1992.
 
    The  Trust's Declaration of Trust authorizes  the Board of Trustees to 
issue
an unlimited number of full and fractional shares of beneficial interest in  
the
Trust and to classify or reclassify any unissued shares into one or more 
classes
of  shares. The Trust is an open-end management investment company, which 
offers
twelve portfolios: Prime Money Market Fund (Class A, Class B and Class C), 
Prime
Value Money Market  Fund (Class A,  Class B,  Class C and  Class D),  
Government
Obligations  Money Market  Fund (Class A,  Class B,  Class C and  Class D), 
100%
Government Obligations  Money  Market Fund  (Class  A,  Class B  and  Class  
C),
Treasury  Instruments Money Market Fund II (Class  A, Class B and Class C), 
100%
Treasury Instruments Money Market Fund (Class A, Class B and Class C),  Tax-
Free
Money  Market Fund (Class A,  Class B and Class  C), Municipal Money Market 
Fund
(Class A, Class B, Class C and Class D), California Municipal Money Market  
Fund
(Class  A, Class B and Class C), New  York Municipal Money Market Fund (Class 
A,
Class B and Class C),
 
                                       16
<PAGE>
Floating Rate U.S. Government Fund (Class A and Class B) and Short Duration 
U.S.
Government Fund (Class A and  Class B). Shares of  the New York Municipal  
Money
Market  Fund are  not currently  sold to  the public.  The Declaration  of 
Trust
further authorizes the trustees  to classify or reclassify  any class of  
shares
into one or more sub-classes.
 
    THIS  PROSPECTUS AND  THE STATEMENT  OF ADDITIONAL  INFORMATION 
INCORPORATED
HEREIN RELATE PRIMARILY TO THE FUND  AND DESCRIBE ONLY THE INVESTMENT  
OBJECTIVE
AND  POLICIES, OPERATIONS,  CONTRACTS AND  OTHER MATTERS  RELATING TO  THE 
FUND.
INVESTORS WISHING  TO OBTAIN  SIMILAR INFORMATION  REGARDING THE  TRUST'S  
OTHER
PORTFOLIOS MAY OBTAIN SEPARATE PROSPECTUSES DESCRIBING THEM BY CONTACTING 
LEHMAN
BROTHERS AT 1-800-368-5556.
 
    The  Trust does not intend to hold annual meetings of shareholders except 
as
required by the 1940 Act or other applicable law. The Trust will call a  
meeting
of  shareholders for  the purpose of  voting upon  the question of  removal of 
a
member of the Board of Trustees  upon written request of shareholders owning  
at
least 10% of the outstanding shares of the Trust entitled to vote.
 
    Each  Fund share  represents an equal  proportionate interest  in the 
assets
belonging to  the Fund.  Each share,  which has  a par  value of  $.001, has  
no
preemptive  or conversion rights.  When issued for payment  as described in 
this
Prospectus, shares will be fully paid and non-assessable.
 
    Holders of the Fund's shares will vote in the aggregate and not by class  
on
all matters, except where otherwise required by law and except that only Class 
B
or  Class C  shares, as the  case may  be, will be  entitled to  vote on 
matters
submitted to a vote of shareholders  pertaining to the Fund's arrangements  
with
Service  Organizations with respect to the relevant Class. Further, 
shareholders
of all  of the  Fund  and of  the  Trust's other  portfolios  will vote  in  
the
aggregate  and not by portfolio except as  otherwise required by law or when 
the
Board of Trustees determines that the matter  to be voted upon affects only  
the
interests  of the  investors of  a particular  portfolio. (See  the Statement 
of
Additional Information under "Additional Description Concerning Fund Shares" 
for
examples where the 1940 Act requires  voting by portfolio.) Shareholders of  
the
Trust  are entitled to one vote for  each full share held (irrespective of 
class
or portfolio) and fractional votes for fractional shares held. Voting rights 
are
not cumulative, and, accordingly, the holders of more than 50% of the  
aggregate
shares of the Trust may elect all of the trustees.
 
    For  information  concerning  the  redemption of  Fund  shares  and 
possible
restrictions on their transferability, see "Purchase and Redemption of 
Shares."
 
    * 9 moved from here; text not shown
 
    *10 moved from here; text not shown
 
    *11 moved from here; text not shown
 
                                       17
<PAGE>
                LEHMAN BROTHERS INSTITUTIONAL FUNDS GROUP TRUST
 
                            Prime Money Market Fund
                         Prime Value Money Market Fund
                    Government Obligations Money Market Fund
                 100% Government Obligations Money Market Fund
                   Treasury Instruments Money Market Fund II
                  100% Treasury Instruments Money Market Fund
                          Municipal Money Market Fund
                           Tax-Free Money Market Fund
                     California Municipal Money Market Fund
                      New York Municipal Money Market Fund
                            ------------------------
 
                       Floating Rate U.S. Government Fund
                      Short Duration U.S. Government Fund
 
                            ------------------------
 
NO  PERSON  HAS  BEEN  AUTHORIZED  TO  GIVE  ANY  INFORMATION  OR  TO  MAKE  
ANY
REPRESENTATIONS NOT CONTAINED IN THIS PROSPECTUS, OR IN THE FUND'S STATEMENT  
OF
ADDITIONAL  INFORMATION INCORPORATED HEREIN BY REFERENCE, IN CONNECTION WITH 
THE
OFFERING MADE BY  THIS PROSPECTUS  AND, IF GIVEN  OR MADE,  SUCH INFORMATION  
OR
REPRESENTATIONS  MUST NOT BE RELIED UPON AS  HAVING BEEN AUTHORIZED BY THE 
TRUST
OR ITS DISTRIBUTOR. THIS PROSPECTUS DOES NOT CONSTITUTE AN OFFERING BY THE 
TRUST
OR BY  THE  DISTRIBUTOR IN  ANY  JURISDICTION IN  WHICH  SUCH OFFERING  MAY  
NOT
LAWFULLY BE MADE.
 
                              -------------------
 
                               TABLE OF CONTENTS
 
<TABLE>
<CAPTION>
                                              PAGE
                                            ---------
<S>                                         <C>
Background and Expense Information........          2
Financial Highlights......................          3
Investment Objective and Policies.........          4
Purchase and Redemption of Shares.........          9
Dividends.................................         11
Taxes.....................................         12
Management of the Fund....................         13
Yields....................................         15
Description of Shares.....................         16
</TABLE>
 
                              CALIFORNIA MUNICIPAL
                               MONEY MARKET FUND
 
                              -------------------
 
                                   PROSPECTUS
                                  May   , 1994
 
                             ---------------------
 
                                LEHMAN BROTHERS
 
THIS PROSPECTUS AND THE STATEMENT OF ADDITIONAL INFORMATION INCORPORATED 
HEREIN
  RELATE PRIMARILY TO THE FUND AND DESCRIBE ONLY THE INVESTMENT OBJECTIVE AND
    POLICIES, OPERATIONS, CONTRACTS AND OTHER MATTERS RELATING TO THE FUND.
  INVESTORS WISHING TO OBTAIN SIMILAR INFORMATION REGARDING THE TRUST'S OTHER
PORTFOLIOS MAY OBTAIN SEPARATE PROSPECTUSES DESCRIBING THEM BY CONTACTING 
LEHMAN
                          BROTHERS AT 1-800-368-5556.


<PAGE>
PROSPECTUS
 
                      NEW YORK MUNICIPAL MONEY MARKET FUND
 
                       An Investment Portfolio Offered By
                Lehman Brothers Institutional Funds Group Trust
 
   
    Lehman  Brothers Institutional Funds Group Trust (the "Trust") is a no-
load,
open-end, management investment company. The shares described in this 
Prospectus
represent interests in the New York  Municipal Money Market Fund portfolio  
(the
"Fund"), one of a family of money market portfolios of the Trust.
    
 
    The Fund's INVESTMENT OBJECTIVE is to provide investors with as high a 
level
of  current income exempt from  federal income tax and,  to the extent 
possible,
from New York State  and New York  City personal income  taxes as is  
consistent
with  relative stability of principal. All or  a portion of the Fund's 
dividends
may be a  specific preference item  for purposes of  the federal individual  
and
corporate alternative minimum taxes.
 
   
    Fund  shares may not be purchased  by individuals directly but 
institutional
investors may purchase shares for  accounts maintained by individuals. The  
Fund
offers  three classes  of shares. In  addition to Class  A shares, 
institutional
investors may purchase on behalf of their  customers Class B shares and Class  
C
shares  which accrue daily  dividends in the  same manner as  Class A shares 
but
bear all  fees  payable by  the  Fund  to institutional  investors  for  
certain
services  they provide to  beneficial owners of such  shares. See "Management 
of
the Fund--Service Organizations."
    
 
   
    AN INVESTMENT IN  THE FUND  IS NEITHER INSURED  NOR GUARANTEED  BY THE  
U.S.
GOVERNMENT. THERE CAN BE NO ASSURANCE THAT THE FUND WILL BE ABLE TO MAINTAIN 
ITS
NET ASSET VALUE OF $1.00 PER SHARE.
    
 
   
    LEHMAN  BROTHERS, INC.  ("LEHMAN BROTHERS")  sponsors the  Fund and  acts 
as
Distributor of its shares. LEHMAN  BROTHERS GLOBAL ASSET MANAGEMENT INC.  
serves
as the Fund's Investment Adviser.
    
 
   
    The  address of the Fund is One Exchange Place, Boston, Massachusetts 
02109.
The Fund can be  contacted as follows: for  purchase and redemption orders  
only
call  1-800-851-3134; for yield information  call 1-800-238-2560 (Class A 
shares
code: 011;  Class B  shares code:  211; Class  C shares  code: 311);  for  
other
information call 1-800-368-5556.
    
 
   
    This  Prospectus briefly sets forth certain  information about the Fund 
that
investors should  know before  investing.  Investors are  advised to  read  
this
Prospectus  and retain it for future reference. Additional information about 
the
Fund contained in a Statement of  Additional Information dated May __, 1994,  
as
amended  or supplemented from time  to time, has been  filed with the 
Securities
and Exchange Commission and is available to investors without charge by  
calling
the   Fund's  Distributor   at  1-800-368-5556.  The   Statement  of  
Additional
Information is incorporated in its entirety by reference into this Prospectus.
    
 
   
    SHARES OF THE  FUND ARE  NOT DEPOSITS OR  OBLIGATIONS OF,  OR GUARANTEED  
OR
ENDORSED  BY, ANY BANK, AND SUCH SHARES ARE NOT FEDERALLY INSURED BY THE 
FEDERAL
DEPOSIT INSURANCE CORPORATION, THE FEDERAL RESERVE BOARD OR ANY OTHER 
GOVERNMENT
AGENCY. SHARES  OF THE  FUND  INVOLVE CERTAIN  INVESTMENT RISKS,  INCLUDING  
THE
POSSIBLE LOSS OF PRINCIPAL.
    
                           --------------------------
 
   
THESE  SECURITIES  HAVE  NOT  BEEN APPROVED  OR  DISAPPROVED  BY  THE 
SECURITIES
    AND EXCHANGE  COMMISSION  OR ANY  STATE  SECURITIES COMMISSION  NOR  HAS
       THE    SECURITIES   AND   EXCHANGE   COMMISSION   OR   ANY   STATE
          SECURITIES  COMMISSION   PASSED   UPON   THE   ACCURACY   OR
              ADEQUACY  OF  THIS  PROSPECTUS.  ANY  REPRESENTATION
                       TO THE CONTRARY IS A CRIMINAL OFFENSE.
    
 
                           --------------------------
 
                                LEHMAN BROTHERS
 
   
May __, 1994
    
<PAGE>
                       BACKGROUND AND EXPENSE INFORMATION
 
   
EXPENSE SUMMARY
    
 
   
<TABLE>
<CAPTION>
                                                                      CLASS A     
CLASS B     CLASS C
                                                                      SHARES      
SHARES      SHARES
                                                                      -------     
-------     -------
<S>                                                                   <C>         
<C>         <C>
ANNUAL FUND OPERATING EXPENSES
 (as a percentage of average net assets)
Advisory Fees (net of applicable fee waivers)......................... 0.00%*     
0.00%*      0.00%*
Rule 12b-1 fees.......................................................  none      
.25%        .35%
Other Expenses--including Administration Fees (net of applicable fee
 waivers and reimbursement of expenses)............................... .16%*      
.16%*       .16%*
                                                                      -------     
-------     -------
Total Fund Operating Expenses (after expense reimbursement)........... .16%       
.41%        .51%
                                                                      -------     
-------     -------
                                                                      -------     
-------     -------
<FN>
---------
*  The Expense Summary above has been  restated to reflect the Fund's 
Investment
  Adviser's and Administrator's voluntary  reimbursement arrangements in  
effect
  for  the Fund's fiscal year ending January  31, 1995. With respect to Class 
A,
  Class B and  Class C shares  for the month  of January, 1995,  the Total  
Fund
  Operating  Expenses including reimbursement of  expenses are anticipated to 
be
  .18%, .43% and .53%, respectively.
</TABLE>
    
 
   
    In order to  maintain a competitive  expense ratio during  1994, the  
Fund's
Investment  Adviser and Administrator  have voluntarily agreed  to reimburse 
the
Fund if  and to  the extent  that total  operating expenses  (other than  
taxes,
interest  brokerage  fees and  commissions.  Rule 12b-1  fees  and 
extraordinary
expenses) exceed .16% of average daily net assets through December 31, 1994. 
For
the years 1995-1997, the Investment Adviser and Administrator intend to 
continue
voluntarily to reimburse the Fund to the extent necessary to maintain 
annualized
expense ratio at a level no greater  than .18% of average daily net assets.  
The
voluntary  reimbursement arrangements described above will not be changed 
unless
shareholders are provided at least 60  days' advance notice. The maximum  
annual
contractual  fees payable to the Investment Adviser and Administrator total 
.20%
of average  daily  net assets.  Absent  reimbursement of  expenses,  Total  
Fund
Operating  Expenses of Class A, Class B and Class C would be .37%, .62% and 
.72%
respectively, of the Fund's  average daily net assets.  The foregoing table  
has
not been audited by the Fund's independent certified public accountants.
    
---------
Example
------------
 
   
An  investor would pay  the following expenses on  a $1,000 investment, 
assuming
(1) a 5% annual return  and (2) redemption at the  end of each time period  
with
respect to the following shares:
    
 
<TABLE>
<CAPTION>
                                                               1 YEAR    3 
YEARS
                                                               ------    -----
--
<S>                                                            <C>       <C>
Class A shares:                                                $ 1.54    $  
5.28
Class B shares:                                                $ 4.09    $ 
13.29
Class C shares:                                                $ 5.11    $ 
16.48
</TABLE>
 
   
    THE  FOREGOING SHOULD NOT BE CONSIDERED  A REPRESENTATION OF ACTUAL 
EXPENSES
AND RATES OF RETURN, WHICH MAY BE GREATER OR LESSER THAN THOSE SHOWN.
    
 
    The purpose of the foregoing table is to assist an investor in 
understanding
the various costs and expenses that an  investor in the Fund will bear  
directly
or   indirectly.  Certain   Service  Organizations   (as  defined   below)  
also
 
                                       2
<PAGE>
may charge their  clients fees in  connection with investments  in Fund  
shares,
which fees are not reflected in the table. For more complete descriptions of 
the
various  costs and expenses, see "Management of the Fund" in this Prospectus 
and
the Statement of Additional Information.
 
   
                       INVESTMENT OBJECTIVE AND POLICIES
    
 
IN GENERAL
 
    The Fund's investment objective is to provide investors with as high a 
level
of current income exempt  from federal income tax  and, to the extent  
possible,
from  New York State  and New York  City personal income  taxes as is 
consistent
with relative stability of principal. All  or a portion of the Fund's  
dividends
may be a specific tax preference item for purposes of the federal individual 
and
corporate alternative minimum taxes.
 
    In  pursuing  its  investment  objective,  the  Fund,  which  operates  as 
a
non-diversified investment company, invests substantially  all of its assets  
in
debt  obligations issued  by or  on behalf of  the State  of New  York and 
other
states, territories  and  possessions of  the  United States,  the  District  
of
Columbia,  and  their  respective authorities,  agencies,  instrumentalities 
and
political subdivisions,  and tax-exempt  derivative  securities such  as  
tender
option  bonds, participations,  beneficial interests  in trusts  and 
partnership
interests (collectively  "Municipal Obligations").  Dividends paid  by the  
Fund
that  are derived  from interest  on obligations  that are  exempt from 
taxation
under  the  Constitution  or   statutes  of  New   York  ("New  York   
Municipal
Obligations")  are exempt from regular federal income tax and New York State 
and
New York  City personal  income taxes.  New York  Municipal Obligations  
include
municipal  securities  issued  by  the  State  of  New  York  and  its 
political
sub-divisions, as  well  as  certain  other governmental  issuers  such  as  
the
Commonwealth  of  Puerto  Rico.  Dividends derived  from  interest  on 
Municipal
Obligations other than New  York Municipal Obligations  are exempt from  
federal
income  tax but  may be  subject to New  York State  and New  York City 
personal
income taxes. The Fund expects that, except during temporary defensive  
periods,
the  Fund's assets will be invested primarily in New York Municipal 
Obligations,
although the amount of the Fund's  assets invested in such securities will  
vary
from time to time.
 
   
    PRICE  AND  PORTFOLIO  MATURITY.    The  Fund  will  not  knowingly 
purchase
securities the interest on which is subject to regular federal income tax. 
(See,
however, "Taxes" below concerning treatment of exempt-interest dividends paid 
by
the Fund  for purposes  of the  federal alternative  minimum tax  applicable  
to
particular classes of investors.) Except during temporary defensive periods, 
the
Fund  will invest substantially all, but in no event less than 80%, of its 
total
assets in Municipal Obligations with remaining maturities of thirteen months  
or
less  as determined in accordance with the  rules of the Securities and 
Exchange
Commission. The Fund maintains a  dollar-weighted average portfolio maturity  
of
90  days or less. The Fund may  hold uninvested cash reserves pending 
investment
during  temporary  defensive   periods,  including   when  suitable   tax-
exempt
obligations are unavailable. Uninvested cash reserves will not earn income.
    
 
   
    PORTFOLIO  QUALITY  AND  DIVERSIFICATION.    The  Fund  will  purchase  
only
Municipal Obligations  which  are  "Eligible  Securities"  (as  defined  by  
the
Securities  and Exchange Commission)  and which present  minimal credit risks 
as
determined by  the Investment  Adviser pursuant  to guidelines  approved by  
the
Trust's  Board of Trustees. Eligible Securities  consist of (i) instruments 
that
are rated at the time of purchase in one of the top two rating categories by  
at
least  two unaffiliated  nationally recognized  statistical rating 
organizations
("NRSROs"), (ii) instruments rated  in one of the  top two rating categories  
by
one  such  NRSRO (if  only one  such organization  rates the  instrument), 
(iii)
instruments issued  by issuers  with short-term  debt having  such ratings,  
and
    
 
                                       3
<PAGE>
   
(iv)  unrated  instruments determined  by  the Investment  Adviser,  pursuant 
to
procedures approved by  the Board of  Trustees, to be  of comparable quality  
to
such  instruments.  The  Appendix  to the  Statement  of  Additional 
Information
includes a description of applicable NRSRO ratings.
    
 
   
INVESTMENT LIMITATIONS
    
    There can  be  no  assurance  that the  Fund  will  achieve  its  
investment
objective. The Fund's investment objective and the policies described herein 
may
be  changed by the Trust's Board of Trustees without the affirmative vote of 
the
holders of a majority of the  Fund's outstanding shares, except that the  
Fund's
policy  of investing at least 80% of its assets in Municipal Obligations and 
the
following investment limitations are fundamental and may not be changed  
without
such a vote of shareholders. (A complete list of the investment limitations 
that
cannot  be changed without a vote of  shareholders is contained in the 
Statement
of Additional Information under "Investment  Objective and Policies.") The  
Fund
may not:
 
     1.  Borrow  money except  from  banks for  temporary  purposes and  then 
in
amounts not exceeding 10% of the value of the Fund's assets; or mortgage, 
pledge
or hypothecate its assets  except in connection with  any such borrowing and  
in
amounts not in excess of the lesser of the dollar amounts borrowed or 10% of 
the
value  of the  Fund's total  assets at  the time  of such  borrowing. 
Additional
investments will not be made when borrowings exceed 5% of the Fund's assets.
 
     2. Purchase any securities which  would cause 25% or  more of the value  
of
its  total assets at  the time of purchase  to be invested  in the securities 
of
issuers conducting their  principal business  activities in  the same  
industry;
provided  that  this  limitation shall  not  apply to  Municipal  Obligations 
or
governmental guarantees of  Municipal Obligations; and  provided, further,  
that
for  the purpose of this limitation  only, industrial development bonds that 
are
considered to  be issued  by non-governmental  users (see  the third  
investment
limitation below) shall not be deemed to be Municipal Obligations; and 
provided,
further,  that  there  is no  limitation  with  respect to  investments  in 
U.S.
government securities.
 
     3. Purchase the securities of any issuer if as a result more than 5% of 
the
value of the Fund's  total assets would  be invested in  the securities of  
such
issuer, except that (a) up to 50% of the value of the Fund's total assets may 
be
invested without regard to this 5% limitation, provided that no more than 25% 
of
the  value of the Fund's total assets are  invested in the securities of any 
one
issuer and (b) this 5% limitation does not apply to U.S. government  
securities.
For  purposes of this limitation,  a security is considered  to be issued by 
the
governmental entity (or entities) whose  assets and revenues back the  
security,
or,  with respect to a  private activity bond that is  backed only by the 
assets
and revenues  of a  non-governmental  user, by  such non-governmental  user.  
In
certain  circumstances,  the  guarantor of  a  guaranteed security  may  also 
be
considered to be  an issuer  in connection with  such guarantee,  except that  
a
guarantee  of a  security shall  not be deemed  to be  a security  issued by 
the
guarantor when  the  value  of  all securities  issued  and  guaranteed  by  
the
guarantor  and owned by the Fund does not  exceed 10% of the value of the 
Fund's
total assets.
 
    Opinions relating  to  the validity  of  Municipal Obligations  and  to  
the
exemption  of interest thereon from federal income tax (and, with respect to 
New
York Municipal Obligations, to the exemption  of interest thereon from New  
York
State  and New York City personal income  taxes) are rendered by bond counsel 
to
the respective issuers  at the time  of issuance, and  opinions relating to  
the
validity  of and  the tax-exempt  status of payments  received by  the Fund 
from
tax-exempt derivatives are  rendered by  counsel to the  respective sponsors  
of
such
 
                                       4
<PAGE>
   
derivatives.  The Fund and its Investment Adviser will rely on such opinions 
and
will not  review  independently  the  underlying  proceedings  relating  to  
the
issuance of Municipal Obligations, the creation of any tax-exempt derivatives 
or
the bases for such opinions.
    
 
TYPES OF MUNICIPAL OBLIGATIONS
 
    The  two principal classifications of Municipal Obligations that may be 
held
by the  Fund  are  "general obligation"  securities  and  "revenue"  
securities.
General  obligation securities  are secured by  the issuer's pledge  of its 
full
faith, credit  and taxing  power  for the  payment  of principal  and  
interest.
Revenue  securities are payable only from the revenues derived from a 
particular
facility or  class of  facilities or,  in some  cases, from  the proceeds  of  
a
special  excise tax  or other specific  revenue source  such as the  user of 
the
facility being financed. Revenue securities may include private activity  
bonds.
Such  bonds  may be  issued by  or on  behalf of  public authorities  to 
finance
various privately operated facilities and are not payable from the  
unrestricted
revenues  of the  issuer. As  a result, the  credit quality  of private 
activity
bonds  is  frequently  related  directly  to  the  credit  standing  of  
private
corporations or other entities.
 
    The  Tax Reform  Act of 1986  substantially revised provisions  of prior 
law
affecting the issuance and use of proceeds of certain tax-exempt obligations.  
A
new  definition of private  activity bonds was  applied to many  types of 
bonds,
including those  which  were  industrial  development  bonds  under  prior  
law.
Interest  on private activity bonds is tax-exempt  only if the bonds fall 
within
certain defined  categories of  qualified private  activity bonds  and meet  
the
requirements specified in those respective categories. The Act generally did 
not
change the tax treatment of bonds issued to finance governmental operations. 
The
changes  generally apply  to bonds  issued after  August 15,  1986, with 
certain
transitional rule  exemptions. As  used in  this Prospectus,  the term  
"private
activity  bonds"  also  includes  industrial  development  revenue  bonds 
issued
pursuant to the Internal Revenue Code of 1986, as amended.
 
    The Fund's portfolio may also  include "moral obligation" securities,  
which
are  normally issued  by special  purpose public  authorities. If  the issuer 
of
moral obligation securities is unable to meet its debt service obligations  
from
current  revenues, it may draw on a reserve  fund, the restoration of which is 
a
moral commitment but not  a legal obligation of  the state or municipality  
that
created the issuer.
 
OTHER INVESTMENT PRACTICES
 
   
    Municipal Obligations purchased by the Fund may include variable rate 
demand
notes.  Such notes may not be rated by credit rating agencies, but unrated 
notes
purchased by the Fund will be determined by the Fund's Investment Adviser to  
be
of  comparable quality at the time  of purchase to rated instruments 
purchasable
by the Fund. Where necessary to ensure that a note is an Eligible Security,  
the
Fund  will require that the issuer's obligation to pay the principal of the 
note
be backed  by  an  conditional bank  letter  or  line of  credit,  guarantee  
or
commitment  to lend. While there may be  no active secondary market with 
respect
to a particular variable rate demand note  purchased by the Fund, the Fund  
may,
upon  the notice specified in  the note, demand payment  of the principal of 
the
note at any  time or  during specified  periods not  exceeding thirteen  
months,
depending upon the instrument involved, and may resell the note at any time to 
a
third  party. The absence of such an active secondary market, however, could, 
in
some instances, make it  difficult for the  Fund to dispose  of a variable  
rate
demand  note if the issuer  were to default on  its payment obligation or 
during
periods that the Fund  is not entitled  to exercise its  demand rights, and  
the
Fund  could, for  this or  other reasons,  suffer a  loss to  the extent  of 
the
default. While, in general, the Fund will invest only in securities that  
mature
within thirteen months of
    
 
                                       5
<PAGE>
purchase,  the Fund may invest in variable  rate demand notes which have 
nominal
maturities in  excess  of thirteen  months,  if such  instruments  carry  
demand
features  that comply with conditions established by the Securities and 
Exchange
Commission.
 
    The Fund may also purchase  Municipal Obligations on a "when-issued"  
basis.
When-issued  securities are securities purchased  for delivery beyond the 
normal
settlement date at a stated price and yield. The Fund generally will not pay 
for
such securities  or start  earning interest  on them  until they  are  
received.
Securities  purchased on a  when-issued basis are  recorded as an  asset and 
are
subject to changes in value based upon changes in the general level of  
interest
rates. The Fund expects that commitments to purchase when-issued securities 
will
not  exceed  25%  of  the  value  of  its  total  assets  absent  unusual 
market
conditions. The  Fund does  not intend  to purchase  when-issued securities  
for
speculative purposes but only in furtherance of its investment objective.
 
    In  addition, the  Fund may acquire  "stand-by commitments"  with respect 
to
Municipal Obligations  held in  its portfolio.  Under a  stand-by commitment,  
a
dealer  agrees to purchase at the  Fund's option specified Municipal 
Obligations
at a  specified price.  The Fund  will acquire  stand-by commitments  solely  
to
facilitate  portfolio  liquidity  and does  not  intend to  exercise  its 
rights
thereunder for trading purposes.
 
   
    The Fund  may  purchase tender  option  bonds. A  tender  option bond  is  
a
municipal obligation (generally held pursuant to a custodial arrangement) 
having
a  relatively long maturity  and bearing interest at  a fixed rate 
substantially
higher than prevailing short-term tax-exempt  rates, that has been coupled  
with
the agreement of a third party, such as a bank, broker-dealer or other 
financial
institution,  pursuant to which such institution grants the security holders 
the
option, at periodic intervals, to tender their securities to the institution 
and
receive the face value thereof. As  consideration for providing the option,  
the
financial institution receives periodic fees equal to the difference between 
the
municipal  obligation's  fixed coupon  rate  and the  rate,  as determined  by 
a
remarketing or similar agent  at or near the  commencement of such period,  
that
would  cause the securities, coupled with the tender option, to trade at or 
near
par on the  date of such  determination. Thus,  after payment of  this fee,  
the
security holder effectively holds a demand obligation that bears interest at 
the
prevailing  short-term  tax  exempt  rate. The  Fund's  Investment  Adviser 
will
consider on  an  ongoing  basis  the  creditworthiness  of  the  issuer  of  
the
underlying  municipal  obligation,  of  any custodian  and  of  the  third 
party
provider of  the tender  option. In  certain instances  and for  certain  
tender
option  bonds, the option may be terminable in the event of a default in 
payment
of principal or interest on the  underlying municipal obligations and for  
other
reasons.
    
 
   
    Additionally,  the above description of tender option bonds is meant only 
to
provide an example of one possible  structure of such obligations, and the  
Fund
may  purchase tender  option bonds with  different types  of ownership, 
payment,
credit and/or liquidity arrangement.
    
 
    The Fund  may acquire  custodial receipts  or certificates  underwritten  
by
securities dealers or banks that evidence ownership of future interest 
payments,
principal payments or both, on certain municipal obligations. The underwriter 
of
these  certificates or  receipts typically  purchases municipal  obligations 
and
deposits the obligations  in an irrevocable  trust or custodial  account with  
a
custodian  bank,  which  then  issues  receipts  or  certificates  that 
evidence
ownership of  the periodic  unmatured coupon  payments and  the final  
principal
payment on the obligations. Although under the terms of a custodial receipt, 
the
Fund  would be  typically authorized to  assert its rights  directly against 
the
issuer of  the underlying  obligation,  the Fund  could  be required  to  
assert
through  the custodian  bank those  rights as  may exist  against the 
underlying
issuer. Thus, in the event
 
                                       6
<PAGE>
the underlying issuer fails to pay principal and/or interest when due, the  
Fund
may  be subject to delays,  expenses and risks that  are greater than those 
that
would have been involved if  the Fund had purchased  a direct obligation of  
the
issuer.  In addition, in the event that  the trust or custodial account in 
which
the underlying security has  been deposited is determined  to be an  
association
taxable  as a  corporation instead  of a  non-taxable entity,  the yield  on 
the
underlying security would be reduced in recognition of any taxes paid.
 
   
    The Fund may purchase  from financial institutions tax-exempt  
participation
interests  in Municipal Obligations. A participation  interest gives the Fund 
an
undivided interest in the Municipal Obligation in the proportion that the 
Fund's
participation interest bears to  the total amount  of the Municipal  
Obligation.
These  instruments  may have  floating  or variable  rates  of interest.  If 
the
participation interest is unrated, it will be backed by an irrevocable letter 
of
credit or  guarantee  of  a  bank  that the  Company's  Board  of  Trustees  
has
determined  meets certain quality standards  or the payment obligation 
otherwise
will be collateralized by  obligations of the U.S.  government and its  
agencies
and  instrumentalities. The  Fund will have  the right, with  respect to 
certain
participation interests,  to demand  payment,  on a  specified number  of  
days'
notice,  for all or any part of the Fund's interest in the Municipal 
Obligation,
plus accrued interest. The Fund will invest no more than 5% of its total  
assets
in participation interests.
    
 
   
    The  Fund will not knowingly invest more than  10% of the value of its 
total
net assets in  illiquid securities,  including securities that  are illiquid  
by
virtue  of the  absence of  a readily available  market or  legal or 
contractual
restrictions on resale. Securities that  have legal or contractual  
restrictions
on  resale  but have  a readily  available  market are  not deemed  illiquid 
for
purposes of  this limitation.  The Fund's  Investment Adviser  will monitor  
the
liquidity  of such restricted  securities under the supervision  of the Board 
of
Trustees. See  "Investment Objective  and Policies--Additional  Information  
and
Investment  Practices--Illiquid  Securities"  in  the  Statement  of  
Additional
Information.
    
 
RISK FACTORS
 
   
    The Fund intends to  follow the diversification standards  set forth in  
the
Investment  Company Act  of 1940,  as amended  (the "1940  Act"), except  to 
the
extent, in the judgment of  the Investment Adviser, that non-diversification  
is
appropriate  in order to maximize  the percentage of the  Fund's assets that 
are
New York  Municipal  Obligations. The  investment  return on  a  non-
diversified
portfolio  typically is  dependent upon the  performance of a  smaller number 
of
issuers relative to the  number of issuers held  in a diversified portfolio.  
In
the event of changes in the financial condition of or in the market's 
assessment
of certain issuers, the Fund's maintenance of large positions in the 
obligations
of  a small number of issuers may affect  the value of the Fund's portfolio to 
a
greater extent than that of a diversified portfolio.
    
 
   
    Although the Fund does not presently intend to do so on a regular basis,  
it
may  invest more than 25% of its assets in Municipal Obligations the interest 
on
which is paid  solely from revenues  of similar projects  if such investment  
is
deemed  necessary or appropriate by the Fund's Investment Adviser. To the 
extent
that the Fund's assets  are concentrated in  Municipal Obligations payable  
from
revenues  on similar projects, are issued by  issuers located in New York or 
are
private activity bonds, the Fund will be subject to the peculiar risks 
presented
by such state, projects and  bonds to a greater extent  than it would be if  
the
Fund's assets were not so concentrated.
    
 
                                       7
<PAGE>
    The Fund's ability to achieve its investment objective is dependent upon 
the
ability  of  the  issuers  of  New  York  Municipal  Obligations  to  meet 
their
continuing obligations for the payment of principal and interest. New York 
State
and New York City face long-term  economic problems that could seriously  
affect
their  ability and that  of other issuers  of New York  Municipal Obligations 
to
meet their financial obligations.
 
    Investors should  be aware  that  certain substantial  issuers of  New  
York
Municipal  Obligations (including issuers  whose obligations may  be acquired 
by
the Fund) have experienced serious financial difficulties in recent years. 
These
difficulties have  at times  jeopardized the  credit standing  and impaired  
the
borrowing  abilities of all  New York issuers and  have generally contributed 
to
higher  interest  costs  for  their  borrowing  and  fewer  markets  for   
their
outstanding  debt  obligations. In  recent  years, several  different  issues 
of
municipal securities of New  York State and  its agencies and  
instrumentalities
and  of New York City have been  downgraded by Standard & Poor's Corporation 
and
Moody's Investors Service, Inc.  On the other hand,  strong demand for New  
York
Municipal  Obligations has more  recently had the effect  of permitting New 
York
Municipal Obligations  to be  issued  with yields  relatively lower,  and  
after
issuance,  to trade in  the market at prices  relatively higher, than 
comparably
rated Municipal Obligations issued by  other jurisdictions. A recurrence of  
the
financial  difficulties previously  experienced by  certain issuers  of New 
York
Municipal Obligations could result in defaults or declines in the market  
values
of  those issuers'  existing obligations  and, possibly,  in the  obligations 
of
other issuers of  New York Municipal  Obligations. Although, as  of the date  
of
this  Prospectus, no  issuers of New  York Municipal Obligations  are in 
default
with respect to the  payment of their Municipal  Obligations, the occurrence  
of
any  such default could affect adversely  the market values and marketability 
of
all New York Municipal Obligations and, consequently, the net asset value of 
the
Fund's portfolio.
 
    Other considerations affecting the Fund's investments in New York  
Municipal
Obligations are summarized in the Statement of Additional Information.
 
    The  value  of  the Fund's  portfolio  securities  can be  expected  to 
vary
inversely with changes in prevailing interest rates.
 
                       PURCHASE AND REDEMPTION OF SHARES
 
PURCHASE PROCEDURES
 
   
    Shares of the Fund  are sold at the  net asset value per  share of the  
Fund
next  determined  after receipt  of  a purchase  order  by Lehman  Brothers, 
the
Distributor of the Fund's shares. Purchase orders for shares are accepted by 
the
Fund only on a day on which both Lehman Brothers and the Federal Reserve Bank 
of
Boston are open  for business  and must be  transmitted to  Lehman Brothers,  
by
telephone  at 1-800-851-3134. Orders  received prior to  noon, Eastern time, 
for
which payment  has  been received  by  Boston  Safe Deposit  and  Trust  
Company
("Boston Safe"), the Fund's Custodian, will be executed at noon. Orders 
received
prior  to noon for which payment is received between noon and 4:00 P.M., 
Eastern
time, will be executed at 4:00 P.M.  Orders received after noon, and orders  
for
which  payment has  not been received  by 4:00  P.M., Eastern time,  will not 
be
accepted and notice thereof will be given to the institution placing the  
order.
Payment  for Fund shares may be made only in federal funds immediately 
available
to Boston Safe. (Payment for orders which are not received or accepted by 
Lehman
Brothers will be returned after prompt inquiry to the sending institution.)  
The
Fund may in its discretion reject any order for shares.
    
 
                                       8
<PAGE>
   
    The minimum aggregate initial investment by an institution in the 
investment
portfolios  that comprise the  Trust is $1  million (with not  less than 
$25,000
invested in  any  one  investment  portfolio offered  by  the  Trust);  
however,
broker-dealers  and other institutional  investors may set  a higher minimum 
for
their customers. To reach the  minimum Trust-wide initial investment,  
purchases
of  shares may be  aggregated over a period  of six months.  There is no 
minimum
subsequent investment.
    
 
   
    Conflict of interest restrictions may  apply to an institution's receipt  
of
compensation paid by the Fund on fiduciary funds that are invested in Class B 
or
Class  C  shares.  See  also "Management  of  the  Fund--Service 
Organizations."
Institutions, including banks regulated by  the Comptroller of the Currency  
and
investment  advisers and other money managers subject to the jurisdiction of 
the
Securities and Exchange Commission, the Department of Labor or state  
securities
commissions, should consult legal counsel before investing in Class B or Class 
C
shares.
    
 
   
    SUBACCOUNTING  SERVICES.  Institutions are  encouraged to open single 
master
accounts. However, certain  institutions may  wish to use  the Transfer  
Agent's
subaccounting  system to minimize their internal recordkeeping requirements. 
The
Transfer Agent  charges a  fee  based on  the  level of  subaccounting  
services
rendered.  Institutions holding Fund shares in a fiduciary, agency, custodial 
or
similar capacity may charge or pass through subaccounting fees as part of or  
in
addition  to normal trust or agency account  fees. They may also charge fees 
for
other services provided which  may be related to  the ownership of Fund  
shares.
This  Prospectus should, therefore, be read  together with any agreement 
between
the customer and the institution with regard to the services provided, the  
fees
charged for those services and any restrictions and limitations imposed.
    
 
REDEMPTION PROCEDURES
 
   
    Redemption  orders must  be transmitted to  Lehman Brothers  by telephone 
at
1-800-851-3134. Payment  for redeemed  shares for  which a  redemption order  
is
received  by Lehman  Brothers prior to  noon, Eastern  time, on a  day that 
both
Lehman Brothers and the Federal Reserve Bank of Boston are open for business  
is
normally  made in federal funds  wired to the redeeming  shareholder on the 
same
business day.  Payment for  redeemed  shares for  which  a redemption  order  
is
received  by Lehman Brothers after noon, Eastern time, on such a business day 
is
normally made in federal  funds wired to the  redeeming shareholder on the  
next
business day following redemption.
    
 
   
    Shares  are redeemed at the net asset  value per share next determined 
after
Lehman Brothers' receipt of the redemption order. While the Fund intends to  
use
its  best  efforts to  maintain  its net  asset value  per  share at  $1.00, 
the
proceeds paid to an investor upon redemption may be more or less than the 
amount
invested depending upon a share's net asset value at the time of redemption.  
To
allow  the Fund's Investment  Adviser to manage  the Fund effectively, 
investors
are strongly urged to initiate all investments or redemptions of Fund Shares  
as
early  in the day as possible and to  notify Lehman Brothers at least one day 
in
advance of transactions in excess of $5 million.
    
 
   
    The Fund reserves the  right to wire redemption  proceeds within seven  
days
after  receiving  the redemption  order if,  in the  judgment of  the 
Investment
Adviser, an earlier payment could adversely affect the Fund. The Fund shall 
have
the right to redeem involuntarily shares in any account at their net asset 
value
if the value of the  account is less than $10,000  after 60 days' prior  
written
notice  to the investor. Any such redemption  shall be effected at the net 
asset
value per share next determined after the redemption order is entered. If 
during
the 60-day period the investor increases the value of its account to $10,000  
or
more, no such redemption shall take
    
 
                                       9
<PAGE>
place.  In addition,  the Fund  may redeem  shares involuntarily  or suspend 
the
right of redemption as  permitted under the 1940  Act, or under certain  
special
circumstances  described  in  the  Statement  of  Additional  Information  
under
"Additional Purchase and Redemption Information."
 
   
VALUATION OF SHARES -- NET ASSET VALUE
    
   
    The Fund's net asset  value per share for  purposes of pricing purchase  
and
redemption orders is determined by the Fund's Administrator Custodian as of 
noon
and  4:00  P.M., Eastern  time, on  each  weekday, with  the exception  of 
those
holidays on which either Lehman Brothers  or the Federal Reserve Bank of  
Boston
is closed. Currently, one or both of these institutions are closed on New 
Year's
Day,   Martin   Luther  King,   Jr.'s   Birthday  (observed),   Presidents'  
Day
(Washington's Birthday), Good Friday, Memorial Day, Independence Day, Labor 
Day,
Columbus Day (observed), Veterans Day,  Thanksgiving Day and Christmas Day,  
and
on the preceding Friday or subsequent Monday when one of these holidays falls 
on
a Saturday or Sunday, respectively. The net asset value per share of the Fund 
is
calculated  by adding the value of all  securities and other assets belonging 
to
the Fund, subtracting liabilities and dividing  the result by the number of  
the
Fund's  outstanding  shares. Portfolio  securities are  valued  on the  basis 
of
amortized cost. Under this method, the Fund values a portfolio security at  
cost
on  the date of purchase  and thereafter assumes a  constant amortization of 
any
discount or premium until maturity  of the security. As  a result, the value  
of
the  security  for purposes  of determining  net asset  value normally  does 
not
change in  response to  fluctuating  interest rates.  While the  amortized  
cost
method  seems  to provide  certainty in  portfolio valuation,  it may  result 
in
periods during which  values, as  determined by  amortized cost,  are higher  
or
lower  than the  amount the Fund  would receive  if it sold  the securities. 
The
Fund's net asset value for purposes of pricing purchase and redemption orders 
is
determined independently of the  net asset values of  the shares of the  
Trust's
other investment portfolios.
    
 
   
OTHER MATTERS
    
    Fund  shares are sold and redeemed without charge by the Fund. 
Institutional
investors purchasing or holding  Fund shares for  their customers' accounts  
may
charge  customers  fees  for  cash management  and  other  services  provided 
in
connection with their accounts. A customer should, therefore, consider the 
terms
of its account with an institution before purchasing Fund shares. An 
institution
purchasing or redeeming  shares on behalf  of its customers  is responsible  
for
transmitting   orders  to  Lehman  Brothers  in  accordance  with  its  
customer
agreements.
 
   
                                   DIVIDENDS
    
 
   
    Investors of the Fund  are entitled to  dividends and distributions  
arising
only  from  the net  investment  income and  capital  gains, if  any,  earned 
on
investments held in the Fund. The Fund's net investment income is declared 
daily
as a dividend to shareholders of record at  the close of business on the day  
of
declaration.  Shares begin accruing dividends on  the day the purchase order 
for
the shares is executed and continue to accrue dividends through, and  
including,
the  day before the redemption  order for the shares  is executed. Dividends 
are
paid monthly by wire  transfer within five  business days after  the end of  
the
month  or within five  business days of  the redemption of  all of an 
investor's
shares of a particular class. The Fund does not expect to realize net  long-
term
capital gains.
    
 
                                       10
<PAGE>
   
    Dividends  are determined in the same manner and are paid in the same 
amount
for each Fund share, except that Class B and Class C shares bear all the 
expense
of fees paid to Service Organizations. As  a result, at any given time, the  
net
yield  on Class B and Class C shares  will be .25% and .35%, respectively, 
lower
than the net yield on Class A shares.
    
 
   
    Institutional investors  may elect  to have  their dividends  reinvested  
in
additional  full and fractional shares of the  same class at the net asset 
value
of such shares on  the payment date. Reinvested  dividends receive the same  
tax
treatment  as dividends paid in cash.  Such election, or any revocation 
thereof,
must be  made in  writing to  as the  Fund's Distribution  260 Franklin  
Street,
Boston,  Massachusetts  02110-9624 and  will  become effective  with  respect 
to
dividends paid after its receipt by  the Distributor, with respect to  
dividends
paid.
    
 
   
    **1  TSSG, as Transfer Agent, will send each Fund investor or its 
authorized
representative, if  any, an  annual  statement designating  the amount,  of  
any
dividends  and  capital  gains distributions  made  during each  year  and 
their
federal and New York tax qualification.
    
 
                                     TAXES
 
   
    **2 The  Fund  intends to  qualify  each  year as  a  "regulated  
investment
company"  under the Internal  Revenue Code of  1986, as amended  (the "Code"). 
A
regulated investment  company is  exempt from  federal income  taxes on  
amounts
distributed  to its investors.  Qualification as a  regulated investment 
company
under the Code for a  taxable year requires, among  other things, that the  
Fund
distribute  to its  investors at  least the  sum of  90% of  its exempt-
interest
income net  of certain  deductions and  90% of  its investment  company  
taxable
income  for such year.  Dividends derived from  exempt-interest income (known 
as
"exempt-interest dividends") may be treated by the Fund's shareholders as  
items
of interest excludable from their gross income under Section 103(a) of the 
Code,
unless  under  the circumstances  applicable to  the particular  shareholder 
the
exclusion would  be disallowed.  (See the  Statement of  Additional  
Information
under "Additional Information Concerning Taxes.")
    
 
   
    **3  The Fund may  hold without limit certain  private activity bonds 
issued
after August 7, 1986. The portion of dividends attributable to interest on  
such
bonds  must be included  in a shareholder's  federal alternative minimum 
taxable
income, as an item of tax  preference, for the purpose of determining  
liability
(if  any)  for the  24%  alternative minimum  tax  for individuals  and  the 
20%
alternative minimum tax  and the environmental  tax applicable to  
corporations.
Corporate shareholders must also take all exempt-interest dividends into 
account
in   determining  certain  adjustments  for   federal  alternative  minimum  
and
environmental tax purposes. The environmental tax applicable to corporations  
is
imposed  at a rate of  .12% on the excess  of the corporation's modified 
federal
alternative minimum taxable income  over $2,000,000. Investors receiving  
Social
Security  benefits  or Railroad  Retirement Act  benefits  should note  that 
all
exempt-interest  dividends  will  be  taken  into  account  in  determining  
the
taxability of such benefits.
    
 
   
    **4  Exempt-interest dividends derived  from interest on  New York 
Municipal
Obligations will be exempt from New York State and New York City personal 
income
taxes (but  not  corporate  franchise  taxes), provided  the  interest  on  
such
obligations  is and continues  to be excluded or  exempt from applicable 
federal
income taxation and New York State and New York City income taxation.  
Dividends
and distributions derived from taxable
    
 
                                       11
<PAGE>
   
income and capital gains, if any, are not exempt from federal income tax or 
from
New  York State and  New York City  taxes. Interest on  indebtedness incurred 
or
continued by  an  investor to  purchase  or carry  shares  of the  Fund  is  
not
deductible  for federal,  New York  State or New  York City  personal income 
tax
purposes.
    
 
   
    **5 Except  as noted  with  respect to  New York  State  and New  York  
City
personal income taxes, dividends and distributions paid to shareholders that 
are
derived  from income on Municipal Obligations  may be taxable income under 
state
or local law even though all or a portion of such dividends or distributions 
may
be derived from  interest on tax-exempt  obligations that, if  paid directly  
to
investors,  would be  tax-exempt income. To  the extent, if  any, that 
dividends
paid to shareholders are derived from taxable income or from long-term or 
short-
term capital gains, such dividends will not be exempt from federal income tax 
or
from New York State or New York  City taxes, whether such dividends are paid  
in
the  form of cash or  additional shares, and may also  be subject to other 
state
and local taxes.
    
 
   
    **6 Dividends declared in October, November or December of any year  
payable
to investors of record on a specified date in such months will be deemed to 
have
been  received by the shareholders  and paid by the Fund  on December 31 of 
such
year in  the  event such  dividends  are actually  paid  during January  of  
the
following year.
    
 
   
    **7  Investors will be  advised at least  annually as to  the federal 
income
tax, as well as the New York State and New York City personal income tax, 
status
and consequences of dividends and distributions made each year.
    
 
   
    **8 The foregoing  is only  a brief  summary of  some of  the important  
tax
considerations  generally affecting  the Fund and  its investors.  No attempt 
is
made to present a detailed explanation of the federal, state or local income 
tax
treatment of the Fund or its investors, and this discussion is not intended as 
a
substitute for careful  tax planning.  Accordingly, potential  investors in  
the
Fund  should consult their tax advisors with specific reference to their own 
tax
situations.
    
 
                             MANAGEMENT OF THE FUND
 
   
    The business and affairs of the Fund are managed under the direction of  
the
Trust's  Board  of Trustees.  The  Trustees approve  all  significant 
agreements
between the Trust  and the  persons or companies  that furnish  services to  
the
Fund,   including   agreements  with   its  distributors,   Investment  
Adviser,
Administrator, Custodian and  Transfer Agent. The  day-to-day operations of  
the
Fund are delegated to the Fund's Investment Adviser and Administrator 
Custodian.
The  Statement of Additional  Information relating to  the Fund contains 
general
background information  regarding  each Trustee  and  executive officer  of  
the
Trust.
    
 
   
DISTRIBUTOR
    
   
    Lehman  Brothers, located  at 3 World  Financial Center, New  York, New 
York
10285, is the Distributor of the Fund's shares. Lehman Brothers, a leading  
full
service  investment  firm, meets  the  diverse financial  needs  of 
individuals,
institutions and governments around the world. Lehman Brothers has entered  
into
a   Distribution  Agreement  with  the  Trust  pursuant  to  which  it  has  
the
responsibility for distributing shares of the Fund.
    
 
   
INVESTMENT ADVISER--LEHMAN BROTHERS GLOBAL ASSET MANAGEMENT INC.
    
   
    Lehman Brothers Global Asset Management  Inc. ("LBGAM"), located at 3  
World
Financial  Center, New  York, New  York 10285,  serves as  the Fund's 
Investment
Adviser. LBGAM is a wholly owned subsidiary of
    
 
                                       12
<PAGE>
   
Lehman Brothers Holdings  Inc. ("Holdings"). LBGAM,  together with other  
Lehman
Brother   investment  advisory  affiliates,  serve   as  Investment  Adviser  
to
investment companies and  private accounts  and has assets  under management  
in
excess of [$15] billion as of ____________, 1994.
    
 
   
    As   Investment  Adviser  to  the  Fund,  LBGAM  will  among  other  
things,
participate in  the  formulation  of the  Fund's  investment  policies,  
analyze
economic  trends  affecting  the  Fund  and  monitor  and  evaluate  the  
Fund's
investment objective and policies and the Fund's investment performance. For 
its
services LBGAM is entitled to receive a monthly fee from the Fund at the  
annual
rate of .10% of the value of the Fund's average daily net assets.
    
 
   
ADMINISTRATOR AND TRANSFER AGENT--THE SHAREHOLDER SERVICES GROUP, INC.
    
   
    The  Shareholder  Services Group,  Inc.  ("TSSG"), located  at  One 
Exchange
Place, 53  State  Street, Boston,  Massachusetts  02109, serves  as  the  
Fund's
Administrator  and Transfer  Agent. TSSG is  a wholly owned  subsidiary of 
First
Data Corporation. As Administrator, TSSG calculates  the net asset value of  
the
Fund's  shares and generally assists in all aspects of the Fund's 
administration
and operation. As  compensation for  TSSG's services as  Administrator, TSSG  
is
entitled  to receive from the Fund  a monthly fee at the  annual rate of .10% 
of
the value of  the Fund's  average daily  net assets.  TSSG is  also entitled  
to
receive a fee from the Fund for its services as Transfer Agent. TSSG pays 
Boston
Safe,  the Fund's  Custodian, a  portion of  its monthly  administration fee 
for
custody services rendered to the Fund.
    
 
   
CUSTODIAN--BOSTON SAFE DEPOSIT AND TRUST COMPANY
    
   
    Boston Safe, a wholly owned subsidiary of The Boston Company, Inc.,  
located
at  One  Boston  Place,  Boston,  Massachusetts  02108,  serves  as  the  
Fund's
Custodian.
    
 
SERVICE ORGANIZATIONS
 
   
    Financial institutions, such  as banks,  savings and  loan associations  
and
other such institutions ("Service Organizations") and/or institutional 
customers
of  Service Organizations may purchase  Class B or Class  C shares. These 
shares
are identical in all respects to Class  A shares except that they bear the  
fees
described below and enjoy certain exclusive voting rights on matters relating 
to
these fees. The Fund will enter into an agreement with each Service 
Organization
whose  customers ("Customers") are the  beneficial owners of Class  B or Class 
C
shares that requires  the Service  Organization to provide  certain services  
to
Customers  in consideration of the Fund's payment  of service fees at the 
annual
rate of .25% or .35%, respectively of  the average daily net asset value of  
the
respective  Class  beneficially owned  by  Customers. Such  services,  which 
are
described  more  fully  in  the   Statement  of  Additional  Information   
under
"Management  of the  Fund--Service Organizations,"  may include  aggregating 
and
processing purchase  and  redemption requests  from  Customers and  placing  
net
purchase  and  redemption  orders  with  Lehman  Brothers;  processing  
dividend
payments  from  the   Fund  on  behalf   of  Customers;  providing   
information
periodically  to Customers showing their positions in shares; arranging for 
bank
wires; responding to Customer inquiries relating to the services provided by 
the
Service Organization  and  handling  correspondence; acting  as  shareholder  
of
record  and nominee and  providing reasonable assistance  in connection with 
the
distribution of shares to Customers. Services  provided with respect to Class  
B
shares  will generally be more limited than those provided with respect to 
Class
C shares. Under the terms of the agreements, Service Organizations are  
required
to  provide to their Customers a schedule of  any fees that they may charge 
such
Customers relating to  the investment of  such Customers' assets  in Class B  
or
Class  C shares.  Class A  shares are sold  to financial  institutions that 
have
entered into servicing agreements with the Fund in
    
 
                                       13
<PAGE>
   
connection with their investments. A  salesperson and any other person  
entitled
to  receive compensation for selling or servicing shares of the Fund may 
receive
different compensation for selling or servicing  shares of the Fund may  
receive
different compensation for selling or servicing one Class of shares over 
another
Class.
    
 
EXPENSES
 
   
    The  Fund bears all of  its own expense. The  Fund's expenses include 
taxes,
interest, fees and  salaries of the  Trust's trustees and  officers who are  
not
directors,  officers or employees of  the Fund's service contractors, 
Securities
and Exchange  Commission fees,  state securities  qualification fees,  costs  
of
preparing and printing prospectuses for regulatory purposes and for 
distribution
to  investors,  advisory  and  administration fees,  charges  of  the 
Custodian.
Transfer Agent and dividend disbursing agent, Service Organization fees, 
certain
insurance premiums, outside  auditing and legal  expenses, costs of  
shareholder
reports  and shareholder meetings and any  extraordinary expenses. The Fund 
also
pays for brokerage fees and commissions (if any) in connection with the 
purchase
and sale of  portfolio securities. In  order to maintain  a competitive  
expense
ratio  during 1994, LBGAM and TSSG have agreed voluntarily to reimburse the 
Fund
if and to the extent that the Fund's total operating expenses (other than 
taxes,
interest, brokerage fees and commissions, Rule 12b-1 fees under the 1940 Act 
and
extraordinary expenses)  exceed .16%  of the  average daily  net assets  
through
December  31, 1994. The Investment Adviser and Administrator Custodian intend 
to
continue voluntarily to reimburse the Fund  to the extent necessary to  
maintain
an annualized expense ratio at a level no greater than .18% of average daily 
net
assets  thereafter.  This voluntary  reimbursement  will not  be  changed 
unless
shareholders are provided at least 60  days' advance notice. In addition,  
these
service  providers have agreed to  reimburse the Fund to  the extent required 
by
applicable state law for certain expenses that are described in the Statement 
of
Additional Information  relating  to  the  Fund. Any  fees  charged  by  
Service
Organizations  or other institutional investors to their customers in 
connection
with investments in Fund shares are not reflected in the Fund's expenses.
    
 
   
                                     YIELDS
    
 
   
    **9 From time to time  the "yields," "effective yields" and  "tax-
equivalent
yields"  of  its  Class  A,  Class  B  and  Class  C  shares  may  be  quoted 
in
advertisements or  in  reports  to  investors.  Yield  quotations  are  
computed
separately  for each Class of shares. The "yield" quoted in advertisements for 
a
particular class or  subclass of  shares refers to  the income  generated by  
an
investment  in such shares over  a specific period (such  as a seven-day 
period)
identified in the advertisement. This income is then "annualized," that is,  
the
amount  of income generated by  the investment during the  week is assumed to 
be
generated each  week over  a  52-week or  one  year period  and  is shown  as  
a
percentage of the investment. The "effective yield" is calculated similarly 
but,
when annualized, the income earned by an investment in a class of Fund shares 
is
assumed to be reinvested. The "effective yield" will be slightly higher than 
the
"yield"  because of  the compounding  effect of  this assumed  reinvestment. 
The
"tax-equivalent yield"  demonstrates the  level of  taxable yield  necessary  
to
produce  an  after-tax yield  equivalent  to the  Fund's  tax-free yield.  It 
is
calculated by increasing the  Fund's yield (calculated as  above) by the  
amount
necessary  to reflect  the payment  of federal  and New  York income  taxes at 
a
stated rate. The "tax-equivalent yield" will always be higher than the 
"yield."
    
 
   
   **10 The Fund's yields may  be compared to those  of other mutual funds  
with
similar  objectives, to bond or other  relevant indices, or to rankings 
prepared
by independent services or other financial or industry publications that 
monitor
the performance of mutual funds, or to  the average yields reported by the  
BANK
RATE  MONITOR from money market deposit accounts offered by the 50 leading 
banks
and thrift institutions in the top five
    
 
                                       14
<PAGE>
standard metropolitan statistical areas. For example, such data are reported  
in
national  financial publications  such as  IBC/DONOGHUE'S MONEY  FUND REPORT-
R-,
IBBOTSON ASSOCIATES OF CHICAGO, THE WALL STREET JOURNAL and THE NEW YORK  
TIMES,
reports prepared by Lipper Analytical Services, Inc. and publications of a 
local
or regional nature.
 
   
   **11  THE  FUND'S  YIELD  FIGURES  FOR  A  CLASS  OF  SHARES  REPRESENT  
PAST
PERFORMANCE, WILL FLUCTUATE AND  SHOULD NOT BE  CONSIDERED AS REPRESENTATIVE  
OF
FUTURE RESULTS. The yield of any investment is generally a function of 
portfolio
quality  and maturity, type of investment  and operating expenses. Since 
holders
of Class B or Class C shares bear the service fees for support services 
provided
by Service Organizations the  net yield on  such shares can  be expected at  
any
given time to be lower than the net yield on Class A shares. Any fees charged 
by
Service  Organizations  or  other  institutional  investors  directly  to  
their
customers in connection with investments in Fund shares are not reflected in 
the
Fund's expenses or  yields. The methods  used to compute  the Fund's yields  
are
described  in more detail in the  Statement of Additional Information. 
Investors
may call 1-800-238-2560  (Class A shares  code: 011; Class  B shares code:  
211;
Class C shares code: 311) to obtain current yield information.
    
 
   
                             DESCRIPTION OF SHARES
    
 
   
    * 1 moved from here; text not shown
    
 
    * 2 moved from here; text not shown
 
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    * 4 moved from here; text not shown
 
    * 5 moved from here; text not shown
 
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    * 7 moved from here; text not shown
 
    * 8 moved from here; text not shown
 
   
    The  Trust was organized  as a Massachusetts business  trust on November 
25,
1992.
    
 
   
    The Trust's Declaration of Trust authorizes  the Board of Trustees to  
issue
an  unlimited number of full and fractional shares of beneficial interest in 
the
Trust and to classify or reclassify any unissued shares into one or more 
classes
of shares. The Trust is an open-end management investment company, which  
offers
twelve portfolios: Prime Money Market Fund (Class A, Class B and Class C), 
Prime
Value  Money Market  Fund (Class A,  Class B,  Class C and  Class D), 
Government
Obligations Money Market  Fund (Class A,  Class B,  Class C and  Class D),  
100%
Government  Obligations  Money  Market Fund  (Class  A,  Class B  and  Class 
C),
Treasury Instruments Money Market Fund II (Class  A, Class B and Class C),  
100%
Treasury  Instruments Money Market Fund (Class A, Class B and Class C), Tax-
Free
Money Market Fund (Class A,  Class B and Class  C), Municipal Money Market  
Fund
(Class  A, Class B, Class C and Class D), California Municipal Money Market 
Fund
(Class A, Class B and Class C),  New York Municipal Money Market Fund (Class  
A,
Class  B and Class C), Floating Rate U.S.  Government Fund (Class A and Class 
B)
and Short Duration U.S. Government Fund (Class A
    
 
                                       15
<PAGE>
   
and Class  B). Shares  of  the New  York Municipal  Money  Market Fund  are  
not
currently  sold to the  public. The Declaration of  Trust further authorizes 
the
trustees to  classify  or  reclassify any  class  of  shares into  one  or  
more
sub-classes.
    
 
   
    THIS  PROSPECTUS AND  THE STATEMENT  OF ADDITIONAL  INFORMATION 
INCORPORATED
HEREIN RELATE PRIMARILY TO THE FUND  AND DESCRIBE ONLY THE INVESTMENT  
OBJECTIVE
AND  POLICIES, OPERATIONS,  CONTRACTS AND  OTHER MATTERS  RELATING TO  THE 
FUND.
INVESTORS WISHING  TO OBTAIN  SIMILAR INFORMATION  REGARDING THE  TRUST'S  
OTHER
PORTFOLIOS MAY OBTAIN SEPARATE PROSPECTUSES DESCRIBING THEM BY CONTACTING 
LEHMAN
BROTHERS AT 1-800-368-5556.
    
 
    The  Trust does not intend to hold annual meetings of shareholders except 
as
required by the 1940 Act or other applicable law. The Trust will call a  
meeting
of  shareholders for  the purpose of  voting upon  the question of  removal of 
a
member of the Board of Trustees  upon written request of shareholders owning  
at
least 10% of the outstanding shares of the Trust entitled to vote.
 
    Each  Fund share  represents an equal  proportionate interest  in the 
assets
belonging to  the Fund.  Each share,  which has  a par  value of  $.001, has  
no
preemptive  or conversion rights.  When issued for payment  as described in 
this
Prospectus, shares will be fully paid and non-assessable.
 
    Holders of the Fund's shares will vote in the aggregate and not by class  
on
all matters, except where otherwise required by law and except that only Class 
B
or  Class C  shares, as the  case may  be, will be  entitled to  vote on 
matters
submitted to a vote of shareholders  pertaining to the Fund's arrangements  
with
Service  Organizations with respect to the relevant Class. Further, 
shareholders
of all of the Trust's portfolios will vote in the aggregate and not by 
portfolio
except as otherwise  required by law  or when the  Board of Trustees  
determines
that  the matter to be voted upon affects only the interests of the 
shareholders
of a particular portfolio.  (See the Statement  of Additional Information  
under
"Additional  Description Concerning Fund Shares" for examples where the 1940 
Act
requires voting by  portfolio.) Shareholders of  the Trust are  entitled to  
one
vote  for  each  full  share  held  (irrespective  of  class  or  portfolio) 
and
fractional votes for fractional shares  held. Voting rights are not  
cumulative,
and,  accordingly, the holders of  more than 50% of  the aggregate shares of 
the
Trust may elect all of the trustees.
 
   
    For information  concerning  the  redemption of  Fund  shares  and  
possible
restrictions on their transferability, see "Purchase and Redemption of 
Shares."
    
 
    * 9 moved from here; text not shown
 
    * 10 moved from here; text not shown
 
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                                       16
<PAGE>
                LEHMAN BROTHERS INSTITUTIONAL FUNDS GROUP TRUST
 
                            Prime Money Market Fund
                         Prime Value Money Market Fund
                    Government Obligations Money Market Fund
                 100% Government Obligations Money Market Fund
                   Treasury Instruments Money Market Fund II
                  100% Treasury Instruments Money Market Fund
                          Municipal Money Market Fund
                           Tax-Free Money Market Fund
                     California Municipal Money Market Fund
                      New York Municipal Money Market Fund
                            ------------------------
 
   
                       Floating Rate U.S. Government Fund
                      Short Duration U.S. Government Fund
    
 
                            ------------------------
 
   
NO  PERSON  HAS  BEEN  AUTHORIZED  TO  GIVE  ANY  INFORMATION  OR  TO  MAKE  
ANY
REPRESENTATIONS NOT CONTAINED IN THIS PROSPECTUS, OR IN THE FUND'S STATEMENT  
OF
ADDITIONAL  INFORMATION INCORPORATED HEREIN BY REFERENCE, IN CONNECTION WITH 
THE
OFFERING MADE BY  THIS PROSPECTUS  AND, IF GIVEN  OR MADE,  SUCH INFORMATION  
OR
REPRESENTATIONS  MUST NOT BE RELIED UPON AS  HAVING BEEN AUTHORIZED BY THE 
TRUST
OR ITS DISTRIBUTOR. THIS PROSPECTUS DOES NOT CONSTITUTE AN OFFERING BY THE 
TRUST
OR BY  THE  DISTRIBUTOR IN  ANY  JURISDICTION IN  WHICH  SUCH OFFERING  MAY  
NOT
LAWFULLY BE MADE.
    
                              -------------------
                               TABLE OF CONTENTS
 
   
<TABLE>
<CAPTION>
                                              PAGE
                                            ---------
<S>                                         <C>
Background and Expense Information........          2
Investment Objective and Policies.........          3
Purchase and Redemption of Shares.........          8
Dividends.................................         10
Taxes.....................................         11
Management of the Fund....................         12
Yields....................................         14
Description of Shares.....................         15
</TABLE>
    
 
                               NEW YORK MUNICIPAL
                               MONEY MARKET FUND
 
                              -------------------
 
   
                                   PROSPECTUS
                                  May __, 1994
    
 
                             ---------------------
 
                                LEHMAN BROTHERS
 
   
                       THIS PROSPECTUS AND THE STATEMENT
    
   
                           OF ADDITIONAL INFORMATION
    
   
                           INCORPORATED HEREIN RELATE
    
   
                           PRIMARILY TO THE FUND AND
    
   
                          DESCRIBE ONLY THE INVESTMENT
    
   
                      OBJECTIVE AND POLICIES, OPERATIONS,
    
   
                          CONTRACTS AND OTHER MATTERS
    
   
                        RELATING TO THE FUND. INVESTORS
    
   
                           WISHING TO OBTAIN SIMILAR
    
   
                           INFORMATION REGARDING THE
    
   
                          TRUST'S OTHER PORTFOLIOS MAY
    
   
                          OBTAIN SEPARATE PROSPECTUSES
    
   
                         DESCRIBING THEM BY CONTACTING
    
   
                       LEHMAN BROTHERS AT 1-800-368-5556.
    





<PAGE>
GOVERNMENT OBLIGATIONS MONEY MARKET FUND
TREASURY INSTRUMENTS MONEY MARKET FUND
TREASURY INSTRUMENTS MONEY MARKET FUND II
INVESTMENT PORTFOLIOS OFFERED BY LEHMAN BROTHERS INSTITUTIONAL FUNDS GROUP 
TRUST
 
<TABLE>
<S>                                        <C>
   STATEMENT OF ADDITIONAL INFORMATION
</TABLE>
 
   
                                                                     MAY__, 
1994
    
 
   
   This  Statement of Additional Information is  meant to be read in 
conjunction
with the Prospectuses  for Government  Obligations Money  Market Fund,  
Treasury
Instruments  Money Market  Fund and Treasury  Instruments Money  Market Fund 
II,
each dated May __,  1994 as amended  or supplemented from time  to time, and  
is
incorporated  by reference in its entirety into those Prospectuses. Because 
this
Statement of Additional Information is not itself a prospectus, no investment 
in
shares of Government Obligations Money  Market Fund, Treasury Instruments  
Money
Market  Fund or Treasury Instruments Money Market  Fund II should be made 
solely
upon the information contained herein. Copies of the Prospectuses for 
Government
Obligations Money  Market  Fund,  Treasury Instruments  Money  Market  Fund  
and
Treasury  Instruments Money  Market Fund  II may  be obtained  by calling 
Lehman
Brothers Inc. ("Lehman Brothers"), at 1-800-368-5556. Capitalized terms used 
but
not defined herein have the same meanings as in the Prospectuses.
    
 
TABLE OF CONTENTS
 
   
<TABLE>
 <S>                                                                          
<C>
 The Trust...............................................................       
2
 Investment Objective and Policies.......................................       
2
 Additional Purchase and Redemption Information..........................       
5
 Management of the Funds.................................................       
8
 Additional Information Concerning Taxes.................................      
15
 Dividends...............................................................      
16
 Additional Yield Information............................................      
16
 Additional Description Concerning Fund Shares...........................      
18
 Counsel.................................................................      
18
 Auditors................................................................      
19
 Financial Statements....................................................      
19
 Miscellaneous...........................................................      
19
</TABLE>
    
<PAGE>
THE TRUST
 
   
Lehman  Brothers Institutional  Funds Group  Trust (the  "Trust") is  a no-
load,
open-end management investment company. The Trust currently includes a family 
of
money market  and non-money  market portfolios,  three of  which are  
Government
Obligations  Money Market, Treasury  Instruments Money Market  Fund and 
Treasury
Instruments Money  Market Fund  II (individually,  a "Fund";  collectively,  
the
"Funds").
    
 
   
   The  securities held by  Government Obligations Money  Market Fund consist 
of
obligations issued  or  guaranteed  by  the U.S.  Government,  its  agencies  
or
instrumentalities  and  repurchase  agreements  relating  to  such  
obligations.
Securities  held  by  Treasury  Instruments  Money  Market  Fund  and   
Treasury
Instruments  Money Market Fund II are limited  to U.S. Treasury bills, notes 
and
other direct obligations of the U.S. Treasury and repurchase agreements 
relating
to  direct  Treasury  obligations.  Although  all  three  Funds  have  the  
same
investment  adviser  and  have comparable  investment  objectives,  their 
yields
normally will differ due  to their differing cash  flows and differences in  
the
specific portfolio securities held.
    
 
   
   THIS  STATEMENT OF ADDITIONAL INFORMATION  AND THE FUNDS' PROSPECTUSES 
RELATE
PRIMARILY TO THE FUNDS AND DESCRIBE ONLY THE INVESTMENT OBJECTIVE AND  
POLICIES,
OPERATIONS, CONTRACTS AND OTHER MATTERS RELATING TO THE FUNDS. INVESTORS 
WISHING
TO  OBTAIN SIMILAR INFORMATION REGARDING THE TRUST'S OTHER PORTFOLIOS MAY 
OBTAIN
SEPARATE  PROSPECTUSES  DESCRIBING  THEM   BY  CONTACTING  LEHMAN  BROTHERS   
AT
1-800-368-5556.
    
 
INVESTMENT OBJECTIVE AND POLICIES
 
As  stated in the Funds' Prospectuses, the  investment objective of the Funds 
is
current income with liquidity and security of principal. The following  
policies
supplement  the description in the Prospectuses of the investment objectives 
and
policies of the Funds.
 
   
   The Funds  are  managed  to  provide stability  of  capital  while  
achieving
competitive  yields. The investment adviser  intends to follow a value-
oriented,
research-driven and risk-averse investment strategy, engaging in a full range 
of
economic,  strategic,  credit  and   market-specific  analyses  in   
researching
potential investment opportunities.
    
 
PORTFOLIO TRANSACTIONS
 
   
Subject  to the  general control  of the  Trust's Board  of Trustees  and 
Lehman
Brothers Global Asset Management Inc. ("LBGAM"), the Funds' investment  
adviser,
LBGAM  is responsible for, makes decisions with respect to and places orders 
for
all purchases and  sales of  portfolio securities  for the  Funds. Purchases  
of
portfolio  securities  are  usually  principal  transactions  without  
brokerage
commissions. In making portfolio investments, LBGAM seeks to obtain the best 
net
price and  the  most favorable  execution  of orders.  To  the extent  that  
the
execution  and price offered by more than  one dealer are comparable, LBGAM 
may,
in its discretion, effect transactions in portfolio securities with dealers  
who
provide  the Trust  with research advice  or other services.  Although the 
Funds
will not seek profits  through short-term trading, LBGAM  may, on behalf of  
the
Funds,  dispose of any portfolio  security prior to its  maturity if it 
believes
such disposition is advisable.
    
 
                                       2
<PAGE>
   
   Investment decisions  for the  Funds are  made independently  from those  
for
other  investment  company portfolios  advised by  LBGAM. Such  other 
investment
company portfolios  may  invest  in  the same  securities  as  the  Funds.  
When
purchases  or sales of the same security are made at substantially the same 
time
on behalf of such other investment company portfolios, transactions are 
averaged
as to price, and available investments allocated as to amount, in a manner 
which
LBGAM believes to be equitable to  each portfolio, including the Funds. In  
some
instances,  this investment  procedure may  adversely affect  the price  paid 
or
received by the Funds or the size of the position obtained for the Funds. To 
the
extent permitted  by law,  LBGAM may  aggregate  the securities  to be  sold  
or
purchased  for  the Funds  with those  to be  sold or  purchased for  such 
other
investment company portfolios in order to obtain best execution.
    
 
   
   Portfolio securities will not be purchased from or sold to and the Funds 
will
not enter  into  repurchase agreements  or  reverse repurchase  agreements  
with
Lehman  Brothers Inc.  ("Lehman Brothers") LBGAM,  or any  affiliated person 
(as
such term is  defined in the  Investment Company  Act of 1940,  as amended  
(the
"1940  Act")) of any of  them, except to the  extent permitted by the 
Securities
and  Exchange  Commission  (the  "SEC").  Furthermore,  with  respect  to   
such
transactions, securities, deposits and repurchase agreements, the Funds will 
not
give  preference  to  Service  Organizations with  which  the  Funds  enter 
into
agreements relating  to  Class B  or  Class  C shares.  (See  the  
Prospectuses,
"Management of the Fund--Service Organizations.")
    
 
   The  Funds  do not  intend to  seek profits  through short-term  trading. 
The
Funds' annual portfolio turnover  rates will be relatively  high but the  
Funds'
portfolio  turnover  is not  expected to  have  a material  effect on  their 
net
incomes. The portfolio turnover  rate for each  of the Funds  is expected to  
be
zero for regulatory reporting purposes.
 
ADDITIONAL INFORMATION ON INVESTMENT PRACTICES
 
The  repurchase price  under the repurchase  agreements described  in the 
Funds'
Prospectuses generally equals the price paid by a Fund plus interest  
negotiated
on  the basis of  current short-term rates (which  may be more  or less than 
the
rate on the securities underlying the repurchase agreement). Securities  
subject
to  repurchase agreements will be held by the Funds' custodian, sub-custodian 
or
in the  Federal Reserve/Treasury  bookentry  system. Repurchase  agreements  
are
considered to be loans by the Funds under the 1940 Act.
 
   Whenever  the Funds enter into reverse  repurchase agreements as described 
in
their Prospectuses, they  will place  in a segregated  custodian account  
liquid
assets having a value equal to the repurchase price (including accrued 
interest)
and  will subsequently  monitor the account  to ensure such  equivalent value 
is
maintained. Reverse repurchase agreements are considered to be borrowings by 
the
Funds under the 1940 Act.
 
   As stated in the Funds' Prospectuses, the Funds may purchase securities on  
a
"when-issued"  basis (i.e., for delivery beyond  the normal settlement date at 
a
stated price and yield). When a Fund agrees to purchase when-issued  
securities,
its  custodian will set aside  cash or liquid portfolio  securities equal to 
the
amount of the commitment in a separate account. Normally, the custodian will 
set
aside portfolio securities to satisfy a purchase commitment, and in such a  
case
such  Fund  may  be required  subsequently  to  place additional  assets  in 
the
separate account in order to ensure that the value of the account remains  
equal
to  the amount of such  Fund's commitment. It may be  expected that a Fund's 
net
assets will  fluctuate  to  a  greater  degree  when  it  sets  aside  
portfolio
securities  to cover  such purchase  commitments than  when it  sets aside 
cash.
Because the  Funds  will  set aside  cash  or  liquid assets  to  satisfy  
their
respective purchase commitments in the manner
 
                                       3
<PAGE>
described,  such a Fund's liquidity and ability to manage its portfolio might 
be
affected in the event  its commitments to  purchase when-issued securities  
ever
exceeded  25% of the  value of its assets.  The Funds do  not intend to 
purchase
when-issued securities for speculative purposes but only in furtherance of 
their
investment objectives. The Funds reserve the right to sell the securities 
before
the settlement date if it is deemed advisable.
 
   When a Fund engages in when-issued  transactions, it relies on the seller  
to
consummate  the trade.  Failure of the  seller to do  so may result  in a 
Fund's
incurring a loss or missing  an opportunity to obtain  a price considered to  
be
advantageous.
 
   
   Each  Fund has the ability to lend  securities from its portfolio to 
brokers,
dealers and other financial organizations. There is no investment restriction 
on
the amount of securities that may be  loaned. A Fund may not lend its  
portfolio
securities  to Lehman Brothers or  its affiliates without specific 
authorization
from the SEC. Loans of portfolio securities by a Fund will be collateralized  
by
cash,  letters  of  credit  or  securities  issued  or  guaranteed  by  the 
U.S.
Government or its agencies which  will be maintained at  all times in an  
amount
equal  to at least  100% of the  current market value  of the loaned 
securities.
From time to  time, a Fund  may return a  part of the  interest earned from  
the
investment of collateral received for securities loaned to the borrower and/or 
a
third  party, which is unaffiliated  with the Fund or  with Lehman Brothers, 
and
which is acting  as a  "finder." With  respect to loans  by the  Funds of  
their
portfolio  securities, the  Funds would  continue to  accrue interest  on 
loaned
securities and would also earn income on loans. Any cash collateral received  
by
the  Funds in connection  with such loans  would be invested  in short-term 
U.S.
government obligations.
    
 
INVESTMENT LIMITATIONS
 
The Funds' Prospectuses summarize certain investment limitations that may not 
be
changed without  the affirmative  vote of  the  holders of  a "majority  of  
the
outstanding   shares"   of  the   respective  Fund   (as  defined   below  
under
"Miscellaneous"). Investment limitations numbered 1 through 7 may not be 
changed
without such a vote of shareholders; investment limitations 8 through 13 may  
be
changed by a vote of the Trust's Board of Trustees at any time.
 
   A Fund may not:
 
    1. Purchase  the securities of any issuer if as a result more than 5% of 
the
       value of the Fund's  assets would be invested  in the securities of  
such
   issuer,  except that 25%  of the value  of the Fund's  assets may be 
invested
   without regard to this 5% limitation and provided that there is no 
limitation
   with respect to investments in U.S. government securities.
 
    2. Borrow money except  from banks  for temporary  purposes and  then in  
an
       amount  not exceeding  10% of  the value  of the  particular Fund's 
total
   assets, or mortgage, pledge  or hypothecate its  assets except in  
connection
   with  any such borrowing  and in amounts not  in excess of  the lesser of 
the
   dollar amounts borrowed or  10% of the value  of the particular Fund's  
total
   assets  at the time of such borrowing. Borrowing  may take the form of a 
sale
   of portfolio securities accompanied by  a simultaneous agreement as to  
their
   repurchase. Additional investments will not be made when borrowings exceed 
5%
   of the Fund's assets.
 
                                       4
<PAGE>
    3. Make  loans except that the Fund may purchase or hold debt obligations 
in
       accordance with its  investment objective  and policies,  may enter  
into
   repurchase agreements for securities and may lend portfolio securities.
 
    4. Act  as  an underwriter,  except insofar  as  the Fund  may be  deemed 
an
       underwriter  under  applicable  securities  laws  in  selling   
portfolio
   securities.
 
    5. Purchase  or sell real estate or  real estate limited partnerships 
except
       that the  Fund  may  invest  in securities  secured  by  real  estate  
or
   interests therein.
 
    6. Purchase  or sell commodities  or commodity contracts,  or invest in 
oil,
       gas or mineral exploration or development programs or in mineral 
leases.
 
    7. Purchase any securities which would cause 25% or more of the value of 
its
       total assets at the time of purchase to be invested in the securities  
of
   issuers  conducting their principal business activities in the same 
industry,
   provided that there  is no  limitation with  respect to  investments in  
U.S.
   government securities.
 
    8. Knowingly  invest more  than 10%  of the  value of  the Fund's  assets 
in
       securities  that  may  be  illiquid  because  of  legal  or   
contractual
   restrictions on resale or securities for which there are no readily 
available
   market quotations.
 
    9. Purchase securities on margin, make short sales of securities or 
maintain
       a short position.
 
   10. Write or sell puts, calls, straddles, spreads or combinations thereof.
 
   11. Invest in securities if as a result the Fund would then have more than 
5%
       of  its total assets in  securities of companies (including 
predecessors)
   with less than three years of continuous operation.
 
   12. Purchase securities  of other  investment companies  except as  
permitted
       under  the  1940  Act  or in  connection  with  a  merger, 
consolidation,
   acquisition or reorganization.
 
   13. Invest in warrants.
 
ADDITIONAL PURCHASE AND REDEMPTION INFORMATION
 
IN GENERAL
 
   
Information on how to  purchase and redeem  a Fund's shares  is included in  
its
Prospectus.  The issuance of shares  is recorded on the  books of the Funds, 
and
share certificates are not issued.
    
 
   
   The regulations  of  the  Comptroller of  the  Currency  (the  
"Comptroller")
provide  that funds held in a fiduciary  capacity by a national bank approved 
by
the Comptroller to exercise fiduciary powers must be invested in accordance 
with
the instrument establishing the fiduciary relationship and local law. The  
Trust
believes  that the purchase of Government  Obligations Money Market Fund 
shares,
Treasury Instruments Money  Market Fund  shares and  Treasury Instruments  
Money
Market Fund II shares by such national banks acting on behalf of their 
fiduciary
accounts  is  not  contrary to  applicable  regulations if  consistent  with 
the
particular account and proper under the law governing the administration of  
the
account.
    
 
   Conflict  of interest restrictions  may apply to  an institution's receipt 
of
compensation paid by the Funds on fiduciary funds that are invested in a  
Fund's
Class B or Class C shares. Institutions, including banks
 
                                       5
<PAGE>
   
regulated  by the Comptroller  and investment advisers  and other money 
managers
subject to  the  jurisdiction of  the  SEC, the  Department  of Labor  or  
state
securities  commissions, should  consult their  legal advisors  before 
investing
fiduciary funds in a Fund's Class B or Class C shares.
    
 
   Prior to effecting a  redemption of shares  represented by certificates,  
The
Shareholder  Services Group, Inc. ("TSSG"), the Funds' transfer agent, must 
have
received such certificates at its  principal office. All such certificates  
must
be endorsed by the redeeming shareholder or accompanied by a signed stock 
power,
in  each instance with the signature guaranteed by a commercial bank or a 
member
of a major stock exchange, unless  other arrangements satisfactory to the  
Funds
have  previously been  made. The  Funds may  require any  additional 
information
reasonably necessary to evidence that a redemption has been duly authorized.
 
   
   Under the 1940 Act, the Funds may suspend the right of redemption or 
postpone
the date of payment  upon redemption for  any period during  which the New  
York
Stock  Exchange ("Exchange") is closed, other than customary weekend and 
holiday
closings, or during  which trading  on said  Exchange is  restricted, or  
during
which  (as determined by the SEC by rule or regulation) an emergency exists as 
a
result of which disposal or valuation of portfolio securities is not  
reasonably
practicable,  or for such  other periods as  the SEC may  permit. (The Funds 
may
also suspend or postpone  the recordation of the  transfer of their shares  
upon
the  occurrence of any of the foregoing  conditions.) In addition, the Funds 
may
redeem shares involuntarily in certain other instances if the Board of  
Trustees
determines  that failure to  redeem may have material  adverse consequences to 
a
Fund's shareholders in general. Each Fund  is obligated to redeem shares  
solely
in  cash up to $250,000 or 1% of  the Fund's net asset value, whichever is 
less,
for any  one shareholder  within a  90-day period.  Any redemption  beyond  
this
amount  will  also be  in  cash unless  the  Board of  Trustees  determines 
that
conditions exist which make payment of redemption proceeds wholly in cash 
unwise
or undesirable. In such a  case, the Fund may make  payment wholly or partly  
in
readily  marketable securities or other property, valued  in the same way as 
the
Fund determines net asset value. See "Net  Asset Value" below for an example  
of
when such redemption or form of payment might be appropriate. Redemption in 
kind
is  not as liquid as a cash redemption. Shareholders who receive a redemption 
in
kind may incur transaction costs if  they sell such securities or property,  
and
may  receive less than the redemption value  of such securities or property 
upon
sale, particularly where such securities are sold prior to maturity.
    
 
   Any institution  purchasing shares  on behalf  of separate  accounts will  
be
required  to hold  the shares  in a  single nominee  name (a  "Master 
Account").
Institutions investing in more than one of the Trust's portfolios or classes  
of
shares  must maintain a separate Master Account  for each portfolio and class 
of
shares. Sub-accounts may be established by name or number either when the 
Master
Account is opened or later.
 
NET ASSET VALUE
 
As stated in  each Fund's  Prospectus, a  Fund's net  asset value  per share  
is
calculated  by adding the value  of all of that  Fund's portfolio securities 
and
other assets belonging to that Fund, subtracting the liabilities charged to 
that
Fund, and  dividing  the  result by  the  total  number of  that  Fund's  
shares
outstanding (irrespective of class). "Assets belonging to" a Fund consist of 
the
consideration  received upon  the issuance of  shares together  with all 
income,
earnings, profits and  proceeds derived from  the investment thereof,  
including
any  proceeds from  the sale, exchange  or liquidation of  such investments, 
any
funds or payments derived from any reinvestment of such proceeds, and a  
portion
of  any general  assets of  the Trust not  belonging to  a particular 
portfolio.
Assets belonging to a particular Fund are charged with the direct liabilities 
of
that Fund
 
                                       6
<PAGE>
and with a share of the general liabilities of the Trust allocated in 
proportion
to the  relative net  assets of  such  Fund and  the Trust's  other  
portfolios.
Determinations  made in  good faith  and in  accordance with  generally 
accepted
accounting principles by  the Board  of Trustees as  to the  allocations of  
any
assets or liabilities with respect to a Fund are conclusive.
 
   As  stated in the  Funds' Prospectuses, in  computing the net  asset value 
of
shares of the Funds  for purposes of  sales and redemptions,  the Funds use  
the
amortized  cost method of valuation. Under this  method, the Funds value each 
of
their portfolio securities at cost on the date of purchase and thereafter 
assume
a constant proportionate amortization of any discount or premium until  
maturity
of  the security. As a result, the value of a portfolio security for purposes 
of
determining net asset value normally does not change in response to  
fluctuating
interest  rates. While the amortized cost method provides certainty in 
portfolio
valuation, it  may result  in valuations  for the  Funds' securities  which  
are
higher or lower than the market value of such securities.
 
   
   In  connection with their use of amortized  cost valuation, each of the 
Funds
limits the dollar-weighted average maturity of its portfolio to not more than 
90
days and does not purchase any instrument with a remaining maturity of more 
than
thirteen months (with certain exceptions) (12  months in the case of  
Government
Obligations  Money Market Fund).  In determining the  average weighted 
portfolio
maturity of each Fund, a variable  rate obligation that is issued or  
guaranteed
by  the U.S. Government, or  an agency or instrumentality  thereof, is deemed 
to
have a  maturity equal  to  the period  remaining  until the  obligation's  
next
interest  rate adjustment.  The Trust's Board  of Trustees  has also 
established
procedures, pursuant  to rules  promulgated by  the SEC,  that are  intended  
to
stabilize  the net asset value per share of  each Fund for purposes of sales 
and
redemptions  at  $1.00.  Such  procedures  include  the  determination  at  
such
intervals  as the Board deems appropriate, of  the extent, if any, to which 
each
Fund's net asset value per share calculated by using available market 
quotations
deviates from $1.00 per  share. In the  event such deviation  exceeds 1/2 of  
1%
with  respect to a Fund,  the Board will promptly  consider what action, if 
any,
should be initiated. If the Board believes that the amount of any deviation 
from
the $1.00  amortized cost  price per  share of  a Fund  may result  in  
material
dilution  or other unfair results to investors or existing shareholders, it 
will
take such steps as it considers appropriate to eliminate or reduce to the 
extent
reasonably practicable  any such  dilution or  unfair results.  These steps  
may
include  selling portfolio instruments prior  to maturity; shortening the 
Fund's
average portfolio maturity; withholding or reducing dividends; redeeming  
shares
in  kind; or utilizing a net asset value per share determined by using 
available
market quotations.
    
 
                                       7
<PAGE>
MANAGEMENT OF THE FUNDS
 
TRUSTEES AND OFFICERS
 
The  Trust's  trustees  and  executive  officers,  their  addresses,   
principal
occupations during the past five years and other affiliations are as follows:
 
   
<TABLE>
<CAPTION>
                                                                             
PRINCIPAL OCCUPATIONS DURING PAST 5
NAME AND ADDRESS                                POSITION WITH THE TRUST          
YEARS AND OTHER AFFILIATIONS
---------------------------------------------  --------------------------  ---
-------------------------------------
<S>                                            <C>                         <C>
Steven Spiegel(1)(2)                           Vice Chairman of the Board  
Managing Director, Lehman Brothers;
 3 World Financial Center                      and Trustee                 
President, Lehman Brothers Global Asset
 New York, New York 10285                                                  
Management Inc.; formerly Chairman,
                                                                           
Lehman Brothers International (Europe).
Charles F. Barber(2)(3)                        Trustee                     
Consultant; formerly Chairman of the
 66 Glenwood Drive                                                         
Board, ASARCO Incorporated.
 Greenwich, CT 06830
Burt N. Dorsett(2)(3)                          Trustee                     
Managing Partner, Dorsett McCabe Capital
 201 East 62nd Street                                                      
Management, Inc., an investment
 New York, NY 10022                                                        
counselling firm; Director, Research
                                                                           
Corporation Technologies, a non-profit
                                                                           
patent-clearing and licensing operation;
                                                                           
formerly President, Westinghouse Pension
                                                                           
Investments Corporation; formerly
                                                                           
Executive Vice President and Trustee,
                                                                           
College Retirement Equities Fund, Inc.,
                                                                           a 
variable annuity fund; and formerly
                                                                           
Investment Officer, University of
                                                                           
Rochester.
Edward J. Kaier(2)(3)                          Trustee                     
Partner with the law firm of Hepburn
 1100 One Penn Center                                                      
Willcox Hamilton & Putnam.
 Philadelphia, PA 19103
S. Donald Wiley(2)(3)                          Trustee                     
Vice-Chairman and Trustee, H.J. Heinz
 USX Tower                                                                 
Company Foundation; prior to October
 Pittsburgh, PA 15219                                                      
1990, Senior Vice President, General
                                                                           
Counsel and Secretary, H.J. Heinz
                                                                           
Company.
</TABLE>
    
 
                                       8
<PAGE>
   
<TABLE>
<CAPTION>
                                                                             
PRINCIPAL OCCUPATIONS DURING PAST 5
NAME AND ADDRESS                                POSITION WITH THE TRUST          
YEARS AND OTHER AFFILIATIONS
---------------------------------------------  --------------------------  ---
-------------------------------------
<S>                                            <C>                         <C>
Peter Meenan                                   President                   
Managing Director of Lehman Brothers;
 260 Franklin Street                                                       
President of Lehman Brothers
 Boston, MA 02110                                                          
Institutional Funds Group Trust;
                                                                           
formerly, Director, Senior Vice
                                                                           
President and Director of Institutional
                                                                           
Fund Services, The Boston Company
                                                                           
Advisors, Inc. from February 1984 to May
                                                                           
1993; Director, Funds Distributor, Inc.
                                                                           
(1992-1993); Senior Vice President, The
                                                                           
Boston Company Advisors, Inc. from
                                                                           
August 1984 to May 1993.
John M. Winters                                Vice President and          
Senior Vice President and Senior Money
 3 World Financial Center                      Investment Officer          
Market Portfolio Manager, Lehman
 New York, NY 10285                                                        
Brothers, Global Asset Management Inc.;
                                                                           
formerly Product Manager with Lehman
                                                                           
Brothers Capital Markets Group.
Michael C. Kardok                              Treasurer                   
Vice President, The Shareholder Services
 One Exchange Place                                                        
Group, Inc.; prior to May 1994, Vice
 Boston, MA 02109                                                          
President, The Boston Company Advisors,
                                                                           
Inc.
Patricia L. Bickimer                           Secretary                   
Vice President and Associate General
 One Exchange Place                                                        
Counsel, The Shareholder Services Group,
 Boston, MA 02109                                                          
Inc.; prior to May 1994, Vice President
                                                                           and 
Associate General Counsel, The
                                                                           
Boston Company Advisors, Inc.
<FN>
------------------------
1. Considered by the Trust to be "interested persons" of the Trust as defined 
in
the 1940 Act.
2. Audit Committee Member.
3. Nominating Committee Member.
</TABLE>
    
 
   
   One trustee of the Trust, Mr. Dorsett, serves as trustee or director of 
other
investment  companies for which  Lehman Brothers and  LBGAM serve as 
distributor
and investment adviser.
    
 
   
   No employee of Lehman Brothers, LBGAM or TSSG receives any compensation  
from
the  Trust for acting as an officer or trustee of the Trust. The Trust pays 
each
trustee who is not a director, officer or employee of Lehman Brothers, LBGAM  
or
TSSG  or any  of their affiliates,  a fee of  $20,000 per annum  plus $1,250 
per
meeting attended and reimburses them for travel and out-of-pocket expenses.
    
 
   
   By virtue of the responsibilities assumed by Lehman Brothers, LBGAM, TSSG 
and
their affiliates under  their respective  agreements with the  Trust, the  
Trust
itself requires no employees in addition to its officers.
    
 
                                       9
<PAGE>
   
   For the fiscal period ended January 31, 1994, such fees and expenses 
totalled
$9,589  for each Fund and $94,754 for the  Trust in the aggregate. As of May 
13,
1994, Trustees and officers of the Trust as a group beneficially owned less 
than
1% of the outstanding shares of each Fund.
    
 
   
INVESTMENT ADVISER
    
   
LBGAM serves as  the investment  adviser to each  of the  Funds. The  
investment
advisory  agreements  provide  that  LBGAM  is  responsible  for  all 
investment
activities of the Funds, including  executing portfolio strategy, Fund  
purchase
and  sale transactions and employs  professional portfolio managers and 
security
analysts who provide research for the Funds.
    
 
   
   The Investment Advisory  Agreements with respect  to each of  the Funds  
will
continue  in  effect  for  a period  of  two  years from  February  5,  1993 
and
thereafter from year to year provided  the continuance is approved annually  
(i)
by  the Trust's Board of Trustees or (ii)  by a vote of a "majority" (as 
defined
in the  1940 Act)  of a  Fund's outstanding  voting securities,  except that  
in
either  event the continuance is also approved  by a majority of the Trustees 
of
the Trust who are not  "interested persons" (as defined  in the 1940 Act).  
Each
Investment  Advisory Agreement may be terminated  (i) on 60 days' written 
notice
by the Trustees of the Trust, (ii) by vote of holders of a majority of a  
Fund's
outstanding  voting  securities,  or  upon 90  days'  written  notice  by 
Lehman
Brothers, or (iii) automatically in the  event of its assignment (as defined  
in
the 1940 Act).
    
 
   
   As  compensation for LBGAM's services rendered to the Funds, each Fund pays 
a
fee, computed daily and paid monthly, at the annual rate of .30% of the  
average
daily  net assets of the Fund. For  the period February 8, 1993 (commencement 
of
operations) to  January  31, 1994,  LBGAM  received  net advisory  fees  in  
the
following  amounts: the Government  Obligations Money Market  Fund, $72,100, 
the
Treasury Instruments  Money Market  Fund, $6,589  and the  Treasury  
Instruments
Money   Market  Fund  II,  $96,737.  Waivers  by  LBGAM  of  advisory  fees  
and
reimbursement of expenses to which it  was entitled amounted to: the  
Government
Obligations  Money Market Fund, $72,100 and $163,039, respectively, the 
Treasury
Instrument Money  Market  Fund,  $6,589  and  $138,230,  respectively,  and  
the
Treasury  Instruments Money Market Fund  II, $96,737 and $173,335, 
respectively.
In order to maintain  competitive expense ratios during  1994 through 1997,  
the
investment adviser and administrator have agreed to reimburse the Funds if 
total
operating   expenses  exceed   certain  levels.  See   "Background  and  
Expense
Information" in each Fund's Prospectus.
    
 
   
PRINCIPAL HOLDERS
    
   
At May 13, 1994, the principal holders of each Fund were as follows:
    
 
   
<TABLE>
<CAPTION>
                                                                          
PERCENTAGE OF
                                                                          
SHARES HELD OF
GOVERNMENT OBLIGATIONS MONEY MARKET FUND            NAME AND ADDRESS       
RECORD ONLY
------------------------------------------------------------------------------
----------
<S>                                           <C>                         <C>
Class A Shares                                Lehman Brothers Inc.               
55.71  %
                                              World Financial Center
                                              New York, NY 10285
                                              Oster & Co.                         
8.74  %
                                              P.O. Box 1338
                                              Victoria, TX 77902
</TABLE>
    
 
                                       10
<PAGE>
   
<TABLE>
<CAPTION>
                                                                          
PERCENTAGE OF
                                                                          
SHARES HELD OF
GOVERNMENT OBLIGATIONS MONEY MARKET FUND            NAME AND ADDRESS       
RECORD ONLY
------------------------------------------------------------------------------
----------
<S>                                           <C>                         <C>
                                              Old Kent Bank and Trust             
6.86  %
                                              111 Lyon Street N.W.
                                              Grand Rapids, MI 49503
Class B Shares                                Hare & Co.                         
99.99  %
                                              c/o Bank of New York
                                              Special Processing Unit
                                              One Wall Street
                                              New York, NY 10286
TREASURY INSTRUMENTS MONEY MARKET FUND
Class A Shares                                Lehman Brothers Inc.               
99.99  %
                                              World Financial Center
                                              New York, NY 10286
TREASURY INSTRUMENTS MONEY MARKET FUND II
Class A Shares                                USNAB & Co.                        
73.26  %
                                              P.O. Box 179
                                              Galveston, TX 77553
                                              MAC & Co.                           
6.13  %
                                              Mellon Bank
                                              P.O. Box 320
                                              Pittsburgh, PA 15230
Class B Shares                                Perusahaan Petambangan             
84.69  %
                                              Minyak Dan
                                              Gas Bumi Negara (Pertamina)
                                              c/o Sakura Trust Co.
                                              350 Park Avenue
                                              New York, NY 10022
                                              Hare & Co.                          
9.25  %
                                              c/o Bank of New York
                                              Special Processing Dept.
                                              One Wall Street
                                              New York, NY 10286
</TABLE>
    
 
   
   As of  May 13,  1994,  the Class  B  and Class  C  shares of  the  
Government
Obligations Money Market Fund and the Treasury Instruments Money Market Fund 
and
the Class C shares of the Treasury Instruments Money Market Fund II had not 
been
offered to the public and all outstanding shares were held by Lehman Brothers.
    
 
                                       11
<PAGE>
   
   The  shareholders described  above have indicated  that they  each hold 
their
shares on behalf of various accounts and not as beneficial owners. To the 
extent
that any shareholder is the beneficial owner of more than 25% of the 
outstanding
shares of a Fund,  such shareholder may  be deemed to be  a "control person"  
of
that Fund for purposes of the 1940 Act.
    
 
ADMINISTRATOR
 
   
TSSG,  a subsidiary of First Data Corporation, is located at One Exchange 
Place,
Boston, Massachusetts  02109,  and  serves  as  the  Trust's  administrator  
and
transfer  agent. As  the Funds'  administrator, TSSG  has agreed  to provide 
the
following services: (i) assist generally  in supervising the Funds'  
operations,
providing  and supervising the operation of  an automated data processing 
system
to process purchase and redemption orders, providing information concerning  
the
Funds   to  their   shareholders  of  record,   handling  shareholder  
problems,
supervising  the  services  of  employees  whose  principal  responsibility  
and
function  is to preserve and strengthen shareholder relations and monitoring 
the
arrangements pertaining  to the  Funds' agreements  with Service  
Organizations;
(ii)  prepare reports  to the  Funds' shareholders  and prepare  tax returns 
and
reports to and  filings with  the SEC; (iii)  compute the  respective net  
asset
value  per share of each Fund; (iv)  provide the services of certain persons 
who
may be elected as trustees or appointed as officers of the Trust by the Board 
of
Trustees; and  (v) maintain  the  registration or  qualification of  the  
Funds'
shares  for sale under state securities laws. TSSG receives, as compensation 
for
its services rendered under an administration agreement, an administrative  
fee,
computed daily and paid monthly, at the annual rate of .10% of the average 
daily
net  assets of each Fund. TSSG pays Boston Safe, the Fund's custodian, a 
portion
of its monthly administration fee for custody services rendered to the Funds.
    
 
   
   Prior to  May  6,  1994,  The  Boston  Company  Advisors,  Inc.  ("TBCA"),  
a
wholly-owned  subsidiary  of  Mellon  Bank  Corporation  ("Mellon"),  served  
as
administrator of the  Funds. On May  6, 1994, TSSG  acquired TBCA's third  
party
mutual  fund administration business from Mellon, and each Fund's 
administration
agreement with  TBCA was  assigned to  TSSG.  For the  period February  8,  
1993
(commencement   of  operations)   to  January   31,  1994,   TBCA  received  
net
administration fees in the following  amounts: the Government Obligations  
Money
Market Fund, $72,100, the Treasury Instruments Money Market Fund, $6,589 and 
the
Treasury  Instruments  Money  Market  Fund  II,  $96,737.  Waivers  by  TBCA  
of
administration fees  and reimbursement  of  expenses to  which it  was  
entitled
amounted to the following: the Government Obligations Money Market Fund, 
$72,100
and  $19,087, respectively, the  Treasury Instruments Money  Market Fund, 
$6,589
and $9,345, respectively,  and the  Treasury Instruments Money  Market Fund  
II,
$96,737  and  $42,443, respectively.  In order  to maintain  competitive 
expense
ratios during 1994 through 1997,  the investment adviser and administrator  
have
agreed to reimburse the Funds if total operating expenses exceed certain 
levels.
See "Background and Expense Information" in each Fund's Prospectus.
    
 
   
   Under  the transfer agency agreement,  TSSG maintains the shareholder 
account
records for the Trust, handles  certain communications between shareholders  
and
the  Trust and distributes dividends and  distributions payable by the Trust 
and
produces statements  with respect  to account  activity for  the Trust  and  
its
shareholders.  For these services, TSSG receives  a monthly fee based on 
average
annual assets and is reimbursed for out-of-pocket expenses.
    
 
   
DISTRIBUTOR
    
   
Lehman Brothers acts as distributor of the Funds' shares. Each Fund's shares 
are
sold on a continuous basis by Lehman Brothers as agent. The distributor pays 
the
cost of printing and distributing prospectuses to
    
 
                                       12
<PAGE>
   
persons who  are  not  shareholders  of the  Funds  (excluding  preparation  
and
printing  expenses necessary for the continued  registration of Fund shares) 
and
of preparing, printing and distributing all sales literature. No compensation 
is
payable by the Funds to Lehman Brothers for its distribution services.
    
 
   Lehman Brothers  is  comprised of  several  major operating  business  
units.
Lehman  Brothers Institutional Funds  Group is the  business group within 
Lehman
Brothers that is primarily responsible  for the distribution and client  
service
requirements  of the Trust  and its shareholders.  Lehman Brothers 
Institutional
Funds Group has been serving institutional clients' investment needs 
exclusively
for more  than 20  years,  emphasizing high  quality individualized  service  
to
clients.
 
   
CUSTODIAN
    
 
   
Boston Safe Deposit and Trust Company ("Boston Safe"), a wholly owned 
subsidiary
of   The  Boston  Company,  Inc.  is   located  at  One  Boston  Place,  
Boston,
Massachusetts 02108, and  serves as  the custodian of  the Trust  pursuant to  
a
custody  agreement. Under the  custody agreement, Boston  Safe holds each 
Fund's
portfolio securities  and keeps  all  necessary accounts  and records.  For  
its
services,  Boston Safe  receives a monthly  fee based upon  the month-end 
market
value of securities  held in  custody and also  receives securities  
transaction
charges,  including out-of-pocket  expenses. The  assets of  the Trust  are 
held
under bank custodianship in compliance with the 1940 Act.
    
 
SERVICE ORGANIZATIONS
 
   
As stated in  the Funds' Prospectuses,  the Funds will  enter into an  
agreement
with  each financial  institution which may  purchase Class C  shares. The 
Funds
will enter  into an  agreement with  each Service  Organization whose  
customers
("Customers")  are the  beneficial owners  of Class  C shares  that requires 
the
Service Organization to provide certain  services to Customers in  
consideration
of  the Funds' payment of .35%  of the average daily net  asset value of Class 
C
shares held by the  Service Organization for the  benefit of Customers.  
Support
services  include:  (i)  aggregating  and  processing  purchase  and  
redemption
requests from Customers and  placing net purchase and  redemption orders with  
a
Fund's  distributor; (ii) processing dividend payments  from the Funds on 
behalf
of Customers;  (iii) providing  information  periodically to  Customers  
showing
their  positions in  shares; (iv)  arranging for  bank wires;  (v) responding 
to
Customer  inquiries  relating   to  the  services   performed  by  the   
Service
Organization   and   handling   correspondence;   (vi)   forwarding  
shareholder
communications from the Funds (such as proxies, shareholder reports, annual  
and
semi-annual  financial statements and dividend, distribution and tax notices) 
to
Customers; (vii) acting as  shareholder of record or  nominee; and (viii)  
other
similar  account administrative services. In addition, a Service Organization 
at
its option, may also provide  to its Customers of Class  C shares (a) a  
service
that  invests the  assets of  their accounts in  shares pursuant  to specific 
or
pre-authorized instructions; (b) provide  sub-accounting with respect to  
shares
beneficially owned by Customers or the information necessary for sub-
accounting;
and (c) provide checkwriting services. Service Organizations that purchase 
Class
C  shares will  also provide  assistance in connection  with the  support of 
the
distribution of Class C shares to its Customers, including marketing  
assistance
and  the forwarding to Customers of sales literature and advertising provided 
by
a distributor of the shares.
    
 
   
   Holders of Class B shares  of a Fund will receive  the services set forth  
in
(i)  and (v)  and may receive  one or  more of the  services set  forth in 
(ii),
(iii), (iv),  (vi) and  (viii) above.  In consideration  of the  services to  
be
rendered  in  connection with  this  Class of  shares  pursuant to  an 
agreement
between the Fund  and the Service  Organization, the Fund  will pay the  
Service
Organization   .25%   of   the   average   daily   net   asset   value   of  
the
    
 
                                       13
<PAGE>
   
Class B shares held by the Service Organization. A Service Organization, at  
its
option,  may also provide to its Customers of Class B shares services 
including:
(a) acting as shareholder of record and as nominee; (b) providing Customers 
with
a service  that invests  the assets  of  their accounts  in shares  pursuant  
to
specific  or pre-authorized instruction; (c) provide sub-accounting with 
respect
to shares  beneficially owned  by  Customers or  the information  necessary  
for
sub-accounting;  (d)  providing  information periodically  to  Customers 
showing
their  position  in  shares;  (e)  arranging  for  bank  wires;  (f)  
forwarding
shareholder  communications from the Fund (such as proxies, shareholder 
reports,
annual and semi-annual financial statements  and dividend, distribution and  
tax
notices)  to Customers; (g)  providing reasonable assistance  in connection 
with
the distribution of shares  to Customers; and (h)  providing such other  
similar
services  as the Fund may reasonably  request to the extent Service 
Organization
is permitted to do so under applicable statutes, rules, or regulations.
    
 
   Each  Fund's  agreements  with  Service  Organizations  are  governed  by   
a
Shareholder  Services Plan  (the "Plan")  that has  been adopted  by the 
Trust's
Board of Trustees pursuant to an exemptive order granted by the SEC. Under  
this
Plan, the Board of Trustees reviews, at least quarterly, a written report of 
the
amounts  expended under the Fund's agreements with Service Organizations and 
the
purposes  for  which  the  expenditures  were  made.  In  addition,  the  
Funds'
arrangements  with Service Organizations must be approved annually by a 
majority
of the  Trust's trustees,  including a  majority  of the  trustees who  are  
not
"interested  persons" of the Trust as defined in the 1940 Act and have no 
direct
or  indirect  financial  interest  in  such  arrangements  (the   
"Disinterested
Trustees").
 
   The  Board  of Trustees  has approved  the  Funds' arrangements  with 
Service
Organizations based on  information provided by  the Funds' service  
contractors
that  there is  a reasonable likelihood  that the arrangements  will benefit 
the
Funds and  their shareholders  by  affording the  Funds greater  flexibility  
in
connection  with the servicing of the accounts of the beneficial owners of 
their
shares in an efficient manner. Any material amendment to the Funds' 
arrangements
with Service Organizations must be approved  by a majority of the Trust's  
Board
of Trustees (including a majority of the Disinterested Trustees). So long as 
the
Funds'  arrangements with Service Organizations are in effect, the selection 
and
nomination of  the  members  of  the  Trust's Board  of  Trustees  who  are  
not
"interested persons" (as defined in the 1940 Act) of the Trust will be 
committed
to the discretion of such non-interested trustees.
 
   
   For  the period February 8, 1993  (commencement of operations) to January 
31,
1994, the Class B  shares of the Government  Obligations Money Market Fund  
paid
$771  in service  fees, the  Class B  shares of  the Treasury  Instruments 
Money
Market Fund paid $454  in service fees  and the Class B  shares of the  
Treasury
Instruments Money Market Fund II paid $35,867 in service fees.
    
 
EXPENSES
 
   
The  Funds' expenses include  taxes, interest, fees and  salaries of the 
Trust's
trustees and  officers who  are  not directors,  officers  or employees  of  
the
Trust's  service  contractors, SEC  fees,  state securities  qualification 
fees,
costs of preparing  and printing  prospectuses for regulatory  purposes and  
for
distribution  to shareholders,  advisory, sub-advisory  and administration 
fees,
charges of the custodian, transfer agent and dividend disbursing agent,  
Service
Organization  fees,  certain  insurance  premiums,  outside  auditing  and 
legal
expenses,  costs  of  shareholder  reports  and  shareholder  meetings  and  
any
extraordinary  expenses. The Funds  also pay for  brokerage fees and 
commissions
(if any) in connection with the purchase and sale of portfolio securities. 
LBGAM
and TSSG have agreed that if, in any  fiscal year, the expenses borne by a  
Fund
    
 
                                       14
<PAGE>
exceed  the applicable expense limitations imposed by the securities 
regulations
of any state in which shares of the particular Fund are registered or  
qualified
for  sale to  the public, they  will reimburse such  Fund for any  excess to 
the
extent required by such  regulations in the same  proportion that each of  
their
fees  bears to the  Fund's aggregate fees  for investment advice, sub-
investment
advice and  administrative  services. Unless  otherwise  required by  law,  
such
reimbursement  would be accrued and paid on the same basis that the advisory 
and
administration fees are accrued and paid by such Fund. To the Funds'  
knowledge,
of the expense limitations in effect on the date of this Statement of 
Additional
Information,  none is more restrictive than two and one-half percent (2 1/2%) 
of
the first $30 million of a Fund's average annual net assets, two percent (2%) 
of
the next $70  million of  the average  annual net  assets and  one and  one-
half
percent (1 1/2%) of the remaining average annual net assets.
 
ADDITIONAL INFORMATION CONCERNING TAXES
 
The   following  summarizes  certain  additional  tax  considerations  
generally
affecting each Fund and its shareholders  that are not described in each  
Fund's
Prospectus.  No attempt  is made  to present a  detailed explanation  of the 
tax
treatment of the Funds  or their shareholders  or possible legislative  
changes,
and  the discussion  here and  in each  Fund's Prospectus  is not  intended as 
a
substitute for careful tax planning. Investors should consult their tax 
advisors
with specific reference to their own tax situation.
 
   
   Each Fund of the Trust  is treated as a  separate corporate entity under  
the
Code  and qualified as a regulated investment company under the Code and 
intends
to so qualify in future years. In order  to so qualify for a taxable year,  
each
Fund  must  satisfy the  distribution requirement  described in  its 
Prospectus,
derive at least 90%  of its gross  income for the  year from certain  
qualifying
sources,  comply with certain diversification tests  and derive less than 30% 
of
its gross income from  the sale or other  disposition of securities and  
certain
other  investments held for less than three months. Interest (including 
original
issue discount and accrued market discount) received by a Fund upon maturity  
or
disposition of a security held for less than three months will not be treated 
as
gross  income derived from the sale or other disposition of such security 
within
the meaning of this requirement. However, any other income which is 
attributable
to realized market appreciation will be treated as gross income from the sale 
or
other disposition of securities for this purpose.
    
 
   A 4% nondeductible excise  tax is imposed  on regulated investment  
companies
that  fail to distribute  currently an amount equal  to specified percentages 
of
their ordinary taxable  income and capital  gain net income  (excess of  
capital
gains  over capital losses). Each Fund  intends to make sufficient 
distributions
or deemed distributions of its ordinary taxable income and any capital gain  
net
income each calendar year to avoid liability for this excise tax.
 
   If  for any  taxable year  a Fund  does not  qualify for  tax treatment  as 
a
regulated investment  company, all  of its  taxable income  will be  subject  
to
federal  income  tax  at  regular  corporate  rates  without  any  deduction 
for
distributions to Fund shareholders. In such event, dividend distributions  
would
be  taxable as ordinary income  to the Fund's shareholders  to the extent of 
its
current and accumulated  earnings and  profits, and  would be  eligible for  
the
dividends received deduction in the case of corporate shareholders.
 
   Each Fund will be required in certain cases to withhold and remit to the 
U.S.
Treasury  31% of taxable dividends  or 31% of gross  proceeds realized upon 
sale
paid to any shareholder who has  failed to provide a correct tax  
identification
number  in the manner required, or who is subject to withholding by the 
Internal
 
                                       15
<PAGE>
Revenue Service  for failure  to  properly include  on  his return  payments  
of
taxable  interest or dividends, or who has failed to certify to the Fund that 
he
is not subject to  backup withholding when required  to do so or  that he is  
an
"exempt recipient."
 
   Depending  upon the extent of the  Funds' activities in states and 
localities
in which their  offices are  maintained, in  which their  agents or  
independent
contractors  are located or in which they  are otherwise deemed to be 
conducting
business, the Funds may be subject to the tax laws of such states or 
localities.
In addition, in  those states  and localities which  have income  tax laws,  
the
treatment  of the Funds and  their shareholders under such  laws may differ 
from
their treatment  under federal  income  tax laws.  Shareholders are  advised  
to
consult their tax advisors concerning the application of state and local 
taxes.
 
   The  foregoing discussion is based on  federal tax laws and regulations 
which
are in effect on the date of this Statement of Additional Information; such 
laws
and regulations may be changed by legislative or administrative action.
 
DIVIDENDS
 
Net income of each of the Funds  for dividend purposes consists of (i)  
interest
accrued  and original issue discount earned on  the Fund's assets, (ii) plus 
the
amortization of market discount and minus the amortization of market premium  
on
such  assets, (iii) less accrued expenses  directly attributable to the Fund 
and
the general expenses (E.G., legal, accounting  and trustees' fees) of the  
Trust
prorated to the Fund on the basis of its relative net assets. In addition, 
Class
B  and  Class C  shares bear  exclusively the  expense of  fees paid  to 
Service
Organizations with respect to the relevant  Class of shares. See "Management  
of
the Funds -- Service Organizations."
 
   As  stated, the Trust uses  its best efforts to  maintain the net asset 
value
per share  of each  Fund at  $1.00.  As a  result of  a significant  expense  
or
realized  or  unrealized loss  incurred  by either  of  these portfolios,  it 
is
possible that the portfolio's net asset value per share may fall below $1.00.
 
ADDITIONAL YIELD INFORMATION
 
The "yields" and "effective yields" are calculated separately for each class  
of
shares  of each Fund and in accordance  with the formulas prescribed by the 
SEC.
The seven-day yield for  each Class of shares  is calculated by determining  
the
net change in the value of a hypothetical pre-existing account in the 
particular
Fund  which has a balance of one share of the Class involved at the beginning 
of
the period, dividing the net change by the value of the account at the 
beginning
of the period to obtain the base period return, and multiplying the base  
period
return  by 365/7. The net change  in the value of an  account in a Fund 
includes
the value of additional shares purchased with dividends from the original  
share
and dividends declared on the original share and any such additional shares, 
net
of  all fees charged to all shareholder  accounts in proportion to the length 
of
the base period and the Fund's average account size, but does not include  
gains
and  losses  or  unrealized  appreciation  and  depreciation.  In  addition,  
an
effective annualized yield quotation may be computed on a compounded basis  
with
respect  to each Class of its  shares by adding 1 to  the base period return 
for
the Class involved (calculated as described above), raising that sum to a  
power
equal to 365/7, and subtracting 1 from the result.
 
                                       16
<PAGE>
   Similarly,  based on the calculations described  above, the Funds' 30-day 
(or
one-month) yields and effective yields may also be calculated. Such yields 
refer
to the average daily  income generated over a  30-day (or one-month) period,  
as
appropriate.
 
   
   For  the 7-day period ended January 31, 1994  the yield for Class A shares 
of
the Government Obligations Money Market Fund  was 3.12% and the effective  
yield
was  3.17%. For the same period,  the yields for Class A,  B and C shares of 
the
Treasury Instruments Money Market Fund were 2.92%, 2.67% and 2.57%, 
respectively
and the effective yields were 2.96%, 2.70% and 2.60%, respectively. For the 
same
period, the yields for Class A, B and C shares of the Treasury Instruments 
Money
Market Fund  II were  3.09%, 2.84%  and 2.74%,  respectively and  the  
effective
yields  were 3.13%, 2.88%  and 2.77%, respectively. Without  such fee waivers 
or
expense reimbursements  the 7-day  yield and  effective yield  for the  Class  
A
shares of the Government Obligations Money Market Fund would have been 2.99% 
and
3.03%, respectively. The yields and effective yields for Class A, B and C 
shares
of  the Treasury Instruments Money Market Fund  would have been 2.79% and 
2.83%,
2.54% and 2.57%,  and 2.44% and  2.47%, respectively. The  yields and  
effective
yields for Class A, B and C shares of the Treasury Instruments Money Market 
Fund
II would have been 2.96% and 3.00%, 2.71% and 2.74%, and 2.61% and 2.64%.
    
 
   
   For  the 30-day period ended  January 31, 1994 the  yield and effective 
yield
for Class A shares of the Government Obligations Money Market Fund was 3.17% 
and
___%, respectively. For the same period, the yields for Class A, B and C  
shares
of  the  Treasury Instruments  Money Market  Fund were  2.98%, 2.73%  and 
2.63%,
respectively and the effective  yields were ___%,  ___% and ___%,  
respectively.
For  the same period,  the yields for  Class A, B  and C shares  of the 
Treasury
Instruments Money Market Fund II were  3.10%, 2.85% and 2.75%, respectively  
and
the  effective yields were  ___%, ___% and ___%,  respectively. Without such 
fee
waivers or expense reimbursements the 30-day  yield and effective yield for  
the
Class  A shares of the Government Obligations  Money Market Fund would have 
been
3.04% and ___%,  respectively. The yields  for Class A,  B and C  shares of  
the
Treasury  Instruments Money Market Fund would  have been 2.85%, 2.60% and 
2.50%,
respectively, and the  effective yields  would have  been ___%,  ___% and  
___%,
respectively. The yields for Class A, B and C shares of the Treasury 
Instruments
Money  Market Fund II would have been  2.97%, 2.72% and 2.62%, respectively, 
and
the effective yields would have been ___%, ___% and ___%, respectively.
    
 
   
   Class B  and  Class C  shares  bear the  expenses  of fees  paid  to  
Service
Organizations.  As a  result, at any  given time, the  net yield of  Class B 
and
Class C shares could be up to .25% and .35% lower than the net yield of Class  
A
shares,  respectively.  The  Class  B  and  Class  C  shares  of  the 
Government
Obligations Money Market Fund did not have  activity as of January 31, 1994  
and
accordingly, yield information is not available with respect to such shares.
    
 
   From  time  to time,  in advertisements  or in  reports to  shareholders, 
the
performance of the  Funds may  be quoted  and compared  to that  of other  
money
market  funds or  accounts with  similar investment  objectives and  to stock 
or
other relevant indices. For example, the yields of the Funds may be compared  
to
the   Donoghue's  MONEY   FUND  AVERAGE,  which   is  an   average  compiled  
by
IBC/Donoghue's MONEY FUND REPORT-R-, of Holliston, MA 01746, a widely 
recognized
independent publication that monitors the performance of money market funds,  
or
to  the  average yields  reported by  the  BANK RATE  MONITOR from  money 
market
deposit accounts offered by the 50 leading banks and thrift institutions in  
the
top five standard metropolitan statistical areas.
 
                                       17
<PAGE>
   The  Funds' yields will  fluctuate and any  quotation of yield  should not 
be
considered as  representative of  the  future performance  of the  Funds.  
Since
yields fluctuate, yield data cannot necessarily be used to compare an 
investment
in the Funds' shares with bank deposits, savings accounts and similar 
investment
alternatives  which  often provide  an agreed  or guaranteed  fixed yield  for 
a
stated period of time. Shareholders  should remember that performance and  
yield
are  generally functions of  the kind and  quality of the  investments held in 
a
portfolio, portfolio maturity,  operating expenses  net of  waivers and  
expense
reimbursements  and market conditions. Any fees charged by Service 
Organizations
or other institutional investors with respect to customer accounts in  
investing
in shares of the Funds will not be included in calculations of yield; such 
fees,
if charged, would reduce the actual yield from that quoted.
 
ADDITIONAL DESCRIPTION CONCERNING FUND SHARES
 
The  Trust does  not presently  intend to  hold annual  meetings of 
shareholders
except as  required by  the 1940  Act or  other applicable  law. The  law  
under
certain circumstances provides shareholders with the right to call for a 
meeting
of  shareholders to consider the removal of  one or more trustees. To the 
extent
required by law,  the Trust  will assist  in shareholder  communication in  
such
matters.
 
   As  stated in the Prospectuses for the  Funds, holders of each Fund's Class 
B
and Class C shares, as the  case may be, will vote  in the aggregate and not  
by
class on all matters, except where otherwise required by law and except that 
for
each  Fund only that Fund's Class B and  Class C shares will be entitled to 
vote
on matters  submitted  to  a  vote of  shareholders  pertaining  to  the  
Fund's
arrangements  with Service Organizations  with respect to  the relevant Class 
of
shares. (See  "Management  of the  Funds  Service --  Organizations.")  
Further,
shareholders of all of the Trust's portfolios will vote in the aggregate and 
not
by  portfolio except as otherwise required by  law or when the Board of 
Trustees
determines that the matter to  be voted upon affects  only the interests of  
the
shareholders  of a particular portfolio. Rule  18f-2 under the 1940 Act 
provides
that any  matter required  to be  submitted by  the provisions  of such  Act  
or
applicable state law, or otherwise, to the holders of the outstanding 
securities
of  an investment  company such as  the Trust shall  not be deemed  to have 
been
effectively acted  upon unless  approved by  the holders  of a  majority of  
the
outstanding  shares of each portfolio affected by the matter. Rule 18f-2 
further
provides that a portfolio shall be deemed  to be affected by a matter unless  
it
is  clear that the  interests of each  portfolio in the  matter are identical 
or
that the matter does not  affect any interest of  the portfolio. Under the  
Rule
the  approval of an investment advisory agreement or any change in a 
fundamental
investment policy would be  effectively acted upon with  respect to a  
portfolio
only  if  approved  by the  holders  of  a majority  of  the  outstanding 
voting
securities  of  such  portfolio.  However,  the  Rule  also  provides  that  
the
ratification  of  the  selection  of independent  accountants,  the  approval 
of
principal underwriting contracts and the election of trustees are not subject 
to
the  separate  voting  requirements  and  may  be  effectively  acted  upon   
by
shareholders of the investment company voting without regard to portfolio.
 
COUNSEL
 
   
Willkie  Farr & Gallagher, One Citicorp Center,  153 East 53rd Street, New 
York,
New York 10022, serves as counsel to  the Trust and will pass upon the  
legality
of  the shares offered hereby. Willkie Farr  & Gallagher also acts as counsel 
to
Lehman Brothers.
    
 
                                       18
<PAGE>
AUDITORS
 
   
Ernst & Young, independent auditors, serve as auditors to the Fund and render 
an
opinion on the  Fund's financial statements.  Ernst & Young  has offices at  
200
Clarendon Street, Boston, Massachusetts 02116-5072.
    
 
   
FINANCIAL STATEMENTS
    
 
   
The  Trust's  Annual Report  for the  fiscal  period ended  January 31,  1994 
is
incorporated into this Statement of  Additional Information by reference in  
its
entirety.
    
MISCELLANEOUS
 
SHAREHOLDER VOTE
 
As used in this Statement of Additional Information and the Prospectuses for 
the
Funds,  a  "majority  of the  outstanding  shares" of  a  Fund or  of  any 
other
portfolio means the lesser of (1) 67%  of the shares of such Fund  
(irrespective
of  class) or of the portfolio represented at  a meeting at which the holders 
of
more than 50% of the outstanding shares of such Fund or portfolio are present 
in
person or by proxy, or (2) more than 50% of the outstanding shares of such  
Fund
(irrespective of class) or of the portfolio.
 
SHAREHOLDER AND TRUSTEE LIABILITY
 
The  Trust is organized as a "business trust" under the laws of the 
Commonwealth
of Massachusetts. Shareholders of such a trust may, under certain 
circumstances,
be held personally liable (as if they were partners) for the obligations of  
the
trust.  The Declaration of Trust of the  Trust provides that shareholders of 
the
Funds shall not be subject to any personal liability for the acts or 
obligations
of the Trust  and that every  note, bond, contract,  order or other  
undertaking
made  by the Trust shall contain a provision to the effect that the 
shareholders
are not  personally liable  thereunder. The  Declaration of  Trust provides  
for
indemnification  out of the trust  property of a Fund  of any shareholder of 
the
Fund held personally  liable solely  by reason  of his  being or  having been  
a
shareholder  and not because of his acts  or omissions or some other reason. 
The
Declaration of Trust also  provides that the Trust  shall, upon request,  
assume
the  defense of any claim made against any shareholder for any act or 
obligation
of the Trust and satisfy any judgment  thereon. Thus, the risk of a  
shareholder
incurring  financial  loss  beyond  its  investment  in  a  Fund  on  account 
of
shareholder liability is limited to circumstances in which the Fund itself 
would
be unable to meet its obligations.
 
   The Trust's Declaration of Trust provides further that no trustee, officer 
or
agent of the Trust shall be personally liable for or on account of any 
contract,
debt, tort, claim, damage, judgment or  decree arising out of or connected  
with
the  administration or preservation  of the trust  estate or the  conduct of 
any
business of the Trust, nor shall any trustee be personally liable to any  
person
for  any action or failure to act except by reason of his own bad faith, 
willful
misfeasance, gross negligence in the performance  of his duties or by reason  
of
reckless  disregard of his  obligations and duties as  trustee. It also 
provides
that all persons having any claim against  the trustees or the Trust shall  
look
solely  to  the trust  property  for payment.  With  the exceptions  stated, 
the
Declaration of  Trust provides  that a  trustee is  entitled to  be  
indemnified
against  all liabilities and  expenses reasonably incurred  by him in 
connection
with the defense or disposition of any proceeding in which he may be involved 
or
with which he may be threatened by reason of his being or having been a 
trustee,
and that the trustees have  the power, but not  the duty, to indemnify  
officers
and  employees  of  the  Trust  unless such  person  would  not  be  entitled 
to
indemnification had he been a trustee.
 
                                       19



[TEXT]
<PAGE>
MUNICIPAL MONEY MARKET FUND
TAX-FREE MONEY MARKET FUND
INVESTMENT PORTFOLIOS OFFERED BY
LEHMAN BROTHERS INSTITUTIONAL FUNDS GROUP TRUST
 
   
    STATEMENT OF ADDITIONAL INFORMATION
                                                                    MAY __, 
1994
    
 
   
   This  Statement of Additional Information is  meant to be read in 
conjunction
with the Prospectuses  for the Municipal  Money Market Fund  and Tax-Free  
Money
Market  Fund portfolios, each dated May __, 1994 as amended or supplemented 
from
time to  time,  and is  incorporated  by reference  in  its entirety  into  
each
Prospectus.  Because this  Statement of Additional  Information is  not itself 
a
prospectus, no  investment in  shares  of the  Municipal  Money Market  Fund  
or
Tax-Free Money Market Fund portfolios should be made solely upon the 
information
contained herein. Copies of the Prospectuses for Municipal Money Market Fund 
and
Tax-Free  Money  Market Fund  may be  obtained by  calling Lehman  Brothers 
Inc.
("Lehman Brothers"), at 1-800-368-5556. Capitalized  terms used but not  
defined
herein have the same meanings as in the Prospectuses.
    
 
TABLE OF CONTENTS
 
   
The Trust.................................................................     
2
Investment Objective and Policies.........................................     
2
Municipal Obligations.....................................................     
8
Additional Purchase and Redemption Information............................    
10
Management of the Funds...................................................    
12
Additional Information Concerning Taxes...................................    
19
Dividends.................................................................    
21
Additional Yield Information..............................................    
21
Additional Description Concerning Shares..................................    
22
Counsel...................................................................    
23
Auditors..................................................................    
23
Financial Statements......................................................    
23
Miscellaneous.............................................................    
23
Appendix..................................................................   
A-1
    
<PAGE>
THE TRUST
 
   
Lehman  Brothers Institutional  Funds Group  Trust (the  "Trust") is  a no-
load,
open-end management investment company. The Trust currently includes a family 
of
money market and non-money market portfolios,  two of which are Municipal  
Money
Market Fund and Tax-Free Money Market Fund (the "Funds").
    
 
   
   THIS  STATEMENT  OF  ADDITIONAL INFORMATION  AND  FUNDS'  PROSPECTUSES 
RELATE
PRIMARILY TO THE FUNDS AND DESCRIBE ONLY THE INVESTMENT OBJECTIVES AND 
POLICIES,
OPERATIONS, CONTRACTS AND OTHER MATTERS RELATING TO THE FUNDS. INVESTORS 
WISHING
TO OBTAIN SIMILAR INFORMATION REGARDING THE TRUST'S OTHER PORTFOLIOS MAY  
OBTAIN
SEPARATE   PROSPECTUSES  DESCRIBING  THEM  BY   CONTACTING  LEHMAN  BROTHERS  
AT
1-800-368-5556.
    
 
INVESTMENT OBJECTIVE AND POLICIES
 
As stated in the Funds' Prospectuses,  the investment objective of each Fund  
is
to  provide as high a level of current  income exempt from federal income tax 
as
is consistent  with  relative stability  of  principal. The  following  
policies
supplement  the description of each Fund's  investment objective and policies 
as
contained in the applicable Prospectus.
 
   
   The Funds  are  managed  to  provide stability  of  capital  while  
achieving
competitive  yields. The investment adviser  intends to follow a value-
oriented,
research-driven and risk-averse investment strategy, engaging in a full range 
of
economic,  strategic,  credit  and   market-specific  analyses  in   
researching
potential investment opportunities.
    
 
PORTFOLIO TRANSACTIONS
 
   
Subject  to the  general control  of the  Trust's Board  of Trustees  and 
Lehman
Brothers Global Asset Management Inc. ("LBGAM"), the Funds' investment  
adviser,
is  responsible for, makes decisions with respect  to, and places orders for 
all
purchases and  sales  of  portfolio  securities  for  the  Funds.  Purchases  
of
portfolio  securities  are  usually  principal  transactions  without  
brokerage
commissions. In making portfolio investments, LBGAM seeks to obtain the best 
net
price and  the  most favorable  execution  of orders.  To  the extent  that  
the
execution  and price offered by more than  one dealer are comparable, LBGAM 
may,
in its discretion, effect transactions in portfolio securities with dealers  
who
provide  the Trust with  research advice or other  services. Research advice 
and
other services furnished  by brokers  through whom the  Funds effect  
securities
transactions  may be  used by  LBGAM in  servicing accounts  in addition  to 
the
Funds, and not all such services will necessarily benefit the Funds.
    
 
   Transactions  in  the   over-the-counter  market   are  generally   
principal
transactions  with dealers,  and the costs  of such  transactions involve 
dealer
spreads rather  than brokerage  commissions.  With respect  to  over-the-
counter
transactions, the Funds, where possible, will deal directly with the dealers 
who
make  a market  in the securities  involved except in  those circumstances 
where
better prices and execution are available elsewhere.
 
   
   Investment decisions for each Fund are made independently from those for  
the
Trust's  other  portfolios or  other investment  company portfolios  or 
accounts
managed by LBGAM. Such other portfolios may invest in the same securities as 
the
Funds. When purchases or  sales of the same  security are made at  
substantially
    
 
                                       2
<PAGE>
   
the  same time on behalf of such  other portfolios, transactions are averaged 
as
to price, and available  investments allocated as to  amount, in a manner  
which
LBGAM  believes to be equitable to each  portfolio, including the Funds. In 
some
instances, this  investment procedure  may adversely  affect the  price paid  
or
received by the Funds or the size of the position obtained for the Funds. To 
the
extent  permitted  by law,  LBGAM may  aggregate  the securities  to be  sold 
or
purchased for  the Funds  with those  to be  sold or  purchased for  such  
other
portfolios in order to obtain best execution.
    
 
   
   The  Funds  will  not  execute  portfolio  transactions  through  or  
acquire
portfolio securities issued by Lehman Brothers Inc. or LBGAM, or any  
affiliated
person  (as  such term  is defined  in the  Investment Company  Act of  1940, 
as
amended (the "1940 Act")) of any of them, except to the extent permitted by  
the
Securities  and Exchange Commission (the "SEC"). In addition, the Funds will 
not
purchase "Municipal Obligations"  during the  existence of  any underwriting  
or
selling  group  relating  thereto  of  which  Shearson  Lehman  Brothers  or 
any
affiliate thereof  is a  member, except  to  the extent  permitted by  the  
SEC.
"Municipal  Obligations" consist  of municipal  obligations (as  defined in 
each
Fund's Prospectus)  and  tax-exempt derivatives  such  as tender  option  
bonds,
participations,  beneficial interests in trusts and partnership interests. 
Under
certain circumstances,  the Funds  may be  at a  disadvantage because  of  
these
limitations  in comparison with other investment company portfolios which have 
a
similar  investment  objective  but  are   not  subject  to  such   
limitations.
Furthermore,  with respect to such transactions, securities and deposits, a 
Fund
will not give  preference to Service  Organizations with which  the Fund  
enters
into  agreements relating  to Class  B or  Class C  shares. (See  the 
applicable
Prospectus, "Management of the Fund-Service Organizations.")
    
 
   
   The Funds  may participate,  if  and when  practicable,  in bidding  for  
the
purchase  of  Municipal Obligations  directly from  an issuer  in order  to 
take
advantage of the lower purchase price available to members of a bidding group. 
A
Fund will  engage  in this  practice,  however, only  when  LBGAM, in  its  
sole
discretion, believes such practice to be in a Fund's interest.
    
 
   The  Funds do  not intend  to seek  profits through  short-term trading. 
Each
Fund's annual portfolio turnover will be relatively high, but a Fund's 
portfolio
turnover is not  expected to  have a  material effect  on its  net income.  
Each
Fund's  portfolio turnover rate is expected  to be zero for regulatory 
reporting
purposes.
 
ADDITIONAL INFORMATION ON INVESTMENT PRACTICES
 
    VARIABLE AND FLOATING RATE INSTRUMENTS.  Municipal Obligations purchased  
by
the  Funds may include variable and floating rate instruments, which provide 
for
adjustments in the interest rate on certain reset dates or whenever a  
specified
interest   rate  index   changes,  respectively.  Variable   and  floating  
rate
instruments are  subject  to  the  credit quality  standards  described  in  
the
Prospectuses. In some cases the Funds may require that the obligation to pay 
the
principal  of  the  instrument  be backed  by  a  letter or  line  of  credit 
or
guarantee. Such instruments may  carry stated maturities in  excess of 397  
days
provided  that the maturity-shortening provisions stated  in Rule 2a-7 under 
the
1940 Act are satisfied. Although a  particular variable or floating rate  
demand
instrument  may not be actively traded in a secondary market, in some cases, 
the
Funds may be  entitled to principal  on demand and  may be able  to resell  
such
notes in the dealer market.
 
   Variable  and  floating  rate demand  instruments  held  by a  Fund  may 
have
maturities of more than  thirteen months provided: (i)  the Fund is entitled  
to
the  payment  of  principal  at  any time,  or  during  specified  intervals 
not
exceeding 13 months, upon giving the prescribed notice (which may not exceed  
30
days), and
 
                                       3
<PAGE>
(ii)  the rate of interest on such instruments is adjusted at periodic 
intervals
which may extend up to  13 months (397 days).  Variable and floating rate  
notes
that  do not provide  for payment within  seven days may  be deemed illiquid 
and
subject to the 10% limitation on such investments.
 
   
   In determining a  Fund's average  weighted portfolio maturity  and whether  
a
variable or floating rate demand instrument has a remaining maturity of 
thirteen
months  or less,  each instrument will  be deemed by  a Fund to  have a 
maturity
equal to  the  longer of  the  period remaining  until  its next  interest  
rate
adjustment  or the period remaining until  the principal amount can be 
recovered
through demand.  In determining  whether an  unrated variable  or floating  
rate
demand instrument is of comparable quality at the time of purchase to 
securities
in  which a Fund may invest, LBGAM will follow guidelines adopted by the 
Trust's
Board of Trustees.
    
 
   
    TENDER OPTION BONDS.   Each Fund may invest  up to 10% of  the value of  
its
assets  in tender  option bonds.  A Fund will  not purchase  tender option 
bonds
unless (a) the  demand feature  applicable thereto  is exercisable  by the  
Fund
within  13 months of the date of such purchase upon no more than 30 days' 
notice
and thereafter is exercisable by the Fund no less frequently than annually  
upon
no  more than  30 days'  notice and,  (b) at  the time  of such  purchase, 
LBGAM
reasonably expects that, (i) based upon its assessment of current and 
historical
interest rate trends, prevailing short-term tax-exempt rates will not exceed 
the
stated interest rate on the underlying Municipal Obligations at the time of  
the
next  tender fee adjustment, and (ii)  the circumstances which might entitle 
the
grantor of a tender option to terminate the tender option would not occur  
prior
to  the  time  of  the next  tender  opportunity.  At the  time  of  each 
tender
opportunity, a Fund will exercise the  tender option with respect to any  
tender
option bonds unless LBGAM reasonably expects that, (a) based upon its 
assessment
of current and historical interest rate trends, prevailing short-term tax-
exempt
rates  will  not exceed  the stated  interest rate  on the  underlying 
Municipal
Obligations at  the  time  of  the  next tender  fee  adjustment,  and  (b)  
the
circumstances  which might entitle  the grantor of a  tender option to 
terminate
the tender  option  would  not occur  prior  to  the time  of  the  next  
tender
opportunity.  The Funds will exercise the  tender feature with respect to 
tender
option bonds, or otherwise  dispose of their tender  option bonds, prior to  
the
time  the tender  option is  scheduled to  expire pursuant  to the  terms of 
the
agreement under which  the tender option  is granted. The  Funds otherwise  
will
comply  with the provisions of Rule 2a-7  under the 1940 Act in connnection 
with
the  purchase  of  tender  option  bonds,  including,  without  limitation,  
the
requisite determination by the Board of Trustees that the tender option bonds 
in
question  meet the quality standards  described in Rule 2a-7.  In the event of 
a
default of the  Municipal Obligation  underlying a  tender option  bond, or  
the
termination  of the tender option  agreement, a Fund would  look to the 
maturity
date of the underlying security for  purposes of compliance with Rule 2a-7  
and,
if  its remaining maturity was  greater than 13 months,  the Fund would sell 
the
security as soon as would be practicable. Each Fund will purchase tender  
option
bonds  only  when it  is  satisfied that  (a)  the custodial  and  tender 
option
arrangements, including the fee payment arrangements, will not adversely  
affect
the tax-exempt status of the underlying Municipal Obligations and (b) payment 
of
any  tender fees  will not have  the effect  of creating taxable  income for 
the
Fund. Based on the  tender option bond arrangement,  each Fund expects to  
value
the  tender option  bond at par;  however, the  value of the  instrument will 
be
monitored to assure that it is valued at fair value.
    
 
    WHEN-ISSUED SECURITIES.  As stated in the Funds' Prospectuses, the Funds 
may
purchase Municipal  Obligations on  a "when-issued"  basis (I.E.,  for  
delivery
beyond  the normal  settlement date at  a stated  price and yield).  When a 
Fund
agrees to purchase when-issued securities, the custodian will set aside cash  
or
 
                                       4
<PAGE>
liquid  portfolio securities equal to the amount of the commitment in a 
separate
account. Normally, the custodian will set aside portfolio securities to  
satisfy
a purchase commitment, and in such a case that Fund may be required 
subsequently
to  place additional assets in the separate  account in order to ensure that 
the
value of the account remains equal to  the amount of such Fund's commitment.  
It
may be expected that a Fund's net assets will fluctuate to a greater degree 
when
it  sets aside portfolio securities to cover such purchase commitments than 
when
it sets aside cash. Because  that Fund will set aside  cash or liquid assets  
to
satisfy  its purchase commitments in the manner described, such Fund's 
liquidity
and ability  to  manage  its  portfolio  might be  affected  in  the  event  
its
commitments to purchase when-issued securities ever exceeded 25% of the value 
of
its  assets. When a Fund  engages in when-issued transactions,  it relies on 
the
seller to consummate the  trade. Failure of  the seller to do  so may result  
in
such  Fund's  incurring a  loss  or missing  an  opportunity to  obtain  a 
price
considered to be advantageous. The Funds  do not intend to purchase  when-
issued
securities  for speculative purposes but only in furtherance of their 
investment
objective. Each  Fund reserves  the  right to  sell  the securities  before  
the
settlement date if it is deemed advisable.
 
    STAND-BY  COMMITMENTS.   Each Fund  may acquire  "stand-by commitments" 
with
respect to  Municipal  Obligations  held  in its  portfolio.  Under  a  stand-
by
commitment,  a  dealer would  agree  to purchase  at  a Fund's  option 
specified
Municipal Obligations at  their amortized cost  value to the  Fund plus  
accrued
interest,  if any. (Stand-by commitments acquired by a Fund may also be 
referred
to as "put" options.) Stand-by commitments may  be exercisable by a Fund at  
any
time  before the  maturity of  the underlying  Municipal Obligations  and may 
be
sold, transferred or assigned only with the instruments involved. A Fund's 
right
to exercise stand-by commitments will be unconditional and unqualified.
 
   The amount payable to a Fund upon its exercise of a stand-by commitment  
will
normally  be  (i)  the  Fund's acquisition  cost  of  the  Municipal 
Obligations
(excluding any accrued interest which the Fund paid on their acquisition),  
less
any  amortized market  premium or  plus any  amortized market  or original 
issue
discount during the period the Fund owned the securities, plus (ii) all 
interest
accrued on  the securities  since the  last interest  payment date  during  
that
period.
 
   
   Each  Fund  expects that  stand-by  commitments will  generally  be 
available
without the  payment  of  any  direct or  indirect  consideration.  However,  
if
necessary  or  advisable,  a  Fund  may pay  for  a  stand-by  commitment 
either
separately in cash or  by paying a higher  price for portfolio securities  
which
are  acquired subject  to the  commitment (thus  reducing the  yield to 
maturity
otherwise available for the  same securities). The total  amount paid in  
either
manner  for outstanding stand-by commitments held by  a Fund will not exceed 
1/2
of 1% of the value of that Fund's total assets calculated immediately after 
each
stand-by commitment is acquired.
    
 
   
   Each Fund intends to enter into stand-by commitments only with dealers, 
banks
and broker-dealers  which, in  the  opinion of  the Fund's  investment  
adviser,
present  minimal  credit  risks. A  Fund's  reliance  upon the  credit  of 
these
dealers, banks and broker-dealers will be secured by the value of the 
underlying
Municipal Obligations that are subject to the commitment.
    
 
   Each Fund would acquire stand-by  commitments solely to facilitate  
portfolio
liquidity  and does  not intend  to exercise  its rights  thereunder for 
trading
purposes. The  acquisition  of  a  stand-by  commitment  would  not  affect  
the
valuation  or assumed  maturity of  the underlying  Municipal Obligations, 
which
would continue  to be  valued  in accordance  with  the amortized  cost  
method.
Stand-by commitments acquired by a
 
                                       5
<PAGE>
Fund  would be valued at zero in determining  net asset value. Where a Fund 
paid
any consideration directly  or indirectly  for a stand-by  commitment, its  
cost
would  be reflected as  unrealized depreciation for the  period during which 
the
commitment was held by that Fund.
 
    PARTICIPATIONS.    Each  Fund  may  purchase  from  financial   
institutions
tax-exempt  participation  interests in  Municipal Obligations.  A 
participation
interest gives a Fund an undivided  interest in the Municipal Obligation in  
the
proportion  that the Fund's participation interest  bears to the total amount 
of
the Municipal Obligation. These instruments may have floating or variable  
rates
of  interest. If the participation interest is  unrated, it will be backed by 
an
irrevocable letter of credit or  guarantee of a bank  that the Trust's Board  
of
Trustees   has  determined  meets  certain  quality  standards  or  the  
payment
obligation  otherwise  will  be  collateralized  by  obligations  of  the   
U.S.
Government  and  its agencies  and instrumentalities.  Each  Fund will  have 
the
right, with respect to certain participation interests, to demand payment, on  
a
specified  number of days' notice, for all or any part of the Fund's interest 
in
the Municipal Obligations, plus accrued interest. Each Fund will invest no  
more
than 5% of its total assets in participation interests.
 
   
    ILLIQUID  SECURITIES.  A Fund may not invest  more than 10% of its total 
net
assets in illiquid securities, including securities that are illiquid by  
virtue
of   the  absence  of  a  readily  available  market  or  legal  or  
contractual
restrictions on resale. Securities that  have legal or contractual  
restrictions
on  resale but have a  readily available market are  not considered illiquid 
for
purposes of this limitation. Each Fund's  investment adviser will monitor on  
an
ongoing  basis the liquidity of such restricted securities under the 
supervision
of the Board of Trustees.
    
 
   
   The SEC has adopted Rule  144A under the Securities  Act of 1933, as  
amended
(the  "1933 Act")  which allows for  a broader institutional  trading market 
for
securities otherwise subject  to restriction  on resale to  the general  
public.
Rule  144A establishes a "safe harbor" from the registration requirements of 
the
1933 Act for resales  of certain securities  to qualified institutional  
buyers.
The Fund's investment adviser anticipates that the market for certain 
restricted
securities  such as institutional municipal securities  will expand further as 
a
result of  this regulation  and the  development of  automated systems  for  
the
trading,  clearance and  settlement of  unregistered securities  of domestic 
and
foreign issuers, such as the PORTAL system sponsored by the National 
Association
of Securities Dealers.
    
 
   
   Each Fund's  investment  adviser will  monitor  the liquidity  of  
restricted
securities under the supervision of the Board of Trustees. In reaching 
liquidity
decisions  with respect to  Rule 144A securities,  the Fund's investment 
adviser
will consider, INTER ALIA, the following factors: (1) the unregistered nature 
of
a Rule 144A security;  (2) the frequency  of trades and quotes  for a Rule  
144A
security;  (3) the number of  dealers willing to purchase  or sell the Rule 
144A
security and the number of  other potential purchasers; (4) dealer  
undertakings
to make a market in the Rule 144A security; (5) the trading markets for the 
Rule
144A  security; and (6) the  nature of the Rule 144A  security and the nature 
of
marketplace trades  (including the  time  needed to  dispose  of the  Rule  
144A
security, methods of soliciting offers and mechanics of transfer).
    
 
   
   The   Appendix  to  this  Statement  of  Additional  Information  contains  
a
description of  the  relevant  rating  symbols  used  by  nationally  
recognized
statistical  rating organizations ("NRSROs") for  Municipal Obligations that 
may
be purchased by the Funds.
    
 
                                       6
<PAGE>
INVESTMENT LIMITATIONS
 
The Funds' Prospectuses summarize certain investment limitations that may not 
be
changed without the affirmative vote  of the holders of  a majority of a  
Fund's
outstanding   shares  (as  defined   below  under  "Miscellaneous").  
Investment
limitations numbered 1  through 7  may not  be changed  without such  a vote  
of
shareholders;  investment limitations 8 through  13 may be changed  by a vote 
of
the Trust's Board of Trustees at any time.
 
   A Fund may not:
 
    1. Purchase the securities of any issuer if as a result more than 5% of  
the
       value  of the Fund's assets  would be invested in  the securities of 
such
   issuer except  that up  to 25%  of  the value  of the  Fund's assets  may  
be
   invested  without regard to this 5% limitation  and provided that there is 
no
   limitation with respect to investments in U.S. government securities.
 
    2. Borrow money,  except  from banks  for  temporary purposes  and  then  
in
       amounts  not exceeding 10% of the value of the Fund's total assets at 
the
   time of such borrowing; or mortgage, pledge or hypothecate any assets  
except
   in  connection with any  such borrowing and  in amounts not  in excess of 
the
   lesser of the dollar amounts borrowed or 10% of the value of the Fund's 
total
   assets at the time of such borrowing. Additional investments will not be 
made
   when borrowings exceed 5% of the Fund's assets.
 
    3. Make loans, except that the Fund may purchase or hold debt instruments 
in
       accordance with its investment objective and policies.
 
    4. Act as an underwriter  of securities, except insofar  as the Fund may  
be
       deemed  an  underwriter  under  applicable  securities  laws  in  
selling
   portfolio securities.
 
    5. Purchase or  sell  real  estate  or  real  estate  limited  
partnerships,
       provided that the Fund may purchase securities of issuers which invest 
in
   real estate or interests therein.
 
    6. Purchase  or sell commodities  or commodity contracts,  or invest in 
oil,
       gas or mineral exploration or development programs or in mineral 
leases.
 
    7. Purchase any securities which would cause 25% or more of the value of 
its
       total assets at the time of purchase to be invested in the securities  
of
   issuers  conducting their principal business activities in the same 
industry,
   provided that there  is no  limitation with  respect to  investments in  
U.S.
   government securities.
 
    8. Knowingly  invest more  than 10%  of the  value of  the Fund's  assets 
in
       securities  that  may  be  illiquid  because  of  legal  or   
contractual
   restrictions on resale or securities for which there are no readily 
available
   market quotations.
 
    9. Purchase securities on margin, make short sales of securities or 
maintain
       a short position.
 
   10. Write or sell puts, calls, straddles, spreads or combinations thereof.
 
   11. Invest in securities if as a result the Fund would then have more than 
5%
       of  its total assets in  securities of companies (including 
predecessors)
   with less than three years of continuous operation.
 
                                       7
<PAGE>
   12. Purchase securities  of other  investment companies  except as  
permitted
       under  the  1940  Act  or in  connection  with  a  merger, 
consolidation,
   acquisition or reorganization.
 
   13. Invest in warrants.
 
   In addition, without the affirmative vote of  the holders of a majority of  
a
Fund's  outstanding shares, such Fund may not  change its policy of investing 
at
least 80% of  its total assets  (except during temporary  defensive periods)  
in
Municipal  Obligations  in  the case  of  Municipal  Money Market  Fund,  and 
in
obligations the interest on which is exempt from federal income tax in the  
case
of the Tax-Free Money Market Fund.
 
   In  order to permit the sale of Fund  shares in certain states, the Funds 
may
make commitments more restrictive than  the investment policies and  
limitations
above.  Should a Fund determine  that any such commitments  are no longer in 
its
best interests, it will revoke the commitment by terminating sales of its 
shares
in the state involved.
 
MUNICIPAL OBLIGATIONS
 
   
Municipal Obligations include debt  obligations issued by governmental  
entities
to  obtain funds  for various public  purposes, including the  construction of 
a
wide range of public facilities,  the refunding of outstanding obligations,  
the
payment  of  general operating  expenses and  the extension  of loans  to 
public
institutions and facilities. Private activity bonds  that are or were issued  
by
or  on  behalf  of  public authorities  to  finance  various  privately 
operated
facilities are included within  the term Municipal  Obligations if the  
interest
paid  thereon  is  exempt from  federal  income  tax. Opinions  relating  to 
the
validity of Municipal Obligations and to the exemption of interest thereon  
from
federal  income taxes are rendered by counsel  to the issuers or bond counsel 
to
the respective issuing authorities  at the time of  issuance. Neither the  
Funds
nor  the  Funds' investment  adviser  will review  independently  the 
underlying
proceedings relating to the issuance of  Municipal Obligations or the bases  
for
such opinions.
    
 
   The  Funds may hold tax-exempt derivatives which may be in the form of 
tender
option bonds,  participations,  beneficial  interests in  a  trust,  
partnership
interests  or other forms. A number of  different structures have been used. 
For
example, interests in long-term fixed rate Municipal Obligations held by a  
bank
as  trustee  or  custodian are  coupled  with  tender option,  demand  and 
other
features when  tax-exempt  derivatives  are created.  Together,  these  
features
entitle  the holder of the interest to  tender (or put) the underlying 
Municipal
Obligation to a third party at  periodic intervals and to receive the  
principal
amount  thereof.  In  some  cases,  Municipal  Obligations  are  represented  
by
custodial  receipts  evidencing  rights  to  receive  specific  future  
interest
payments,  principal payments  or both,  on the  underlying municipal 
securities
held by the  custodian. Under  such arrangements,  the holder  of the  
custodial
receipt has the option to tender the underlying municipal securities at its 
face
value  to  the  sponsor (usually  a  bank  or broker-dealer  or  other 
financial
institution), which is paid  periodic fees equal to  the difference between  
the
bond's  fixed coupon rate and  the rate that would  cause the bond, coupled 
with
the tender option, to trade at par on  the date of a rate adjustment. The  
Funds
may  hold tax-exempt derivatives, such  as participation interests and 
custodial
receipts, for Municipal Obligations which give  the holder the right to  
receive
payment  of principal  subject to the  conditions described  above. The 
Internal
Revenue Service has  not ruled on  whether the interest  received on  tax-
exempt
derivatives  in the  form of  participation interests  or custodial  receipts 
is
tax-exempt, and accordingly,  purchases of  any such interests  or receipts  
are
based on the opinion of counsel to the sponsors
 
                                       8
<PAGE>
   
of  such  derivative securities.  Neither the  Funds  nor the  Funds' 
investment
adviser will  review independently  the underlying  proceedings related  to  
the
creation of any tax-exempt derivatives or the bases for such opinions.
    
 
   
   As described in the Funds' Prospectuses, the two principal classifications 
of
Municipal  Obligations consist of "general obligation" and "revenue" issues, 
and
each Fund's portfolio may include "moral obligation" issues, which are  
normally
issued  by special purpose authorities. There  are, of course, variations in 
the
quality of Municipal  Obligations both  within a  particular classification  
and
between  classifications, and the yields on  Municipal Obligations depend upon 
a
variety of factors,  including general  money market  conditions, the  
financial
condition  of the issuer,  general conditions of the  municipal bond market, 
the
size of a particular offering, the maturity of the obligation and the rating  
of
the  issue. The ratings of NRSROs represent  their opinions as to the quality 
of
Municipal Obligations.  It  should  be recognized,  however,  that  ratings  
are
general  and are  not absolute standards  of quality,  and Municipal 
Obligations
with the same maturity, interest rate and rating may have different yields 
while
Municipal Obligations  of the  same maturity  and interest  rate with  
different
ratings  may have the same yield. Subsequent to its purchase by a Fund, an 
issue
of Municipal Obligations  may cease to  be rated  or its rating  may be  
reduced
below  the  minimum  rating  required  for  purchase  by  the  Fund.  The 
Fund's
investment adviser will  consider such an  event in determining  whether a  
Fund
should continue to hold the obligation.
    
 
   An  issuer's obligations under  its Municipal Obligations  are subject to 
the
provisions of bankruptcy,  insolvency and  other laws affecting  the rights  
and
remedies  of creditors, such as  the federal Bankruptcy Code,  and laws, if 
any,
which may be  enacted by federal  or state legislatures  extending the time  
for
payment  of principal  or interest or  both, or imposing  other constraints 
upon
enforcement of such obligations  or upon the ability  of municipalities to  
levy
taxes. The power or ability of an issuer to meet its obligations for the 
payment
of  interest on  and principal  of its  Municipal Obligations  may be 
materially
adversely affected by litigation or other conditions.
 
   Among other instruments, each Fund may purchase short-term General 
Obligation
Notes, Tax  Anticipation Notes,  Bond Anticipation  Notes, Revenue  
Anticipation
Notes,  Tax-Exempt Commercial Paper, Construction Loan  Notes and other forms 
of
short-term  loans.  Such  notes  are  issued  with  a  short-term  maturity   
in
anticipation  of the receipt  of tax funds,  the proceeds of  bond placements 
or
other revenues. In addition, each Fund  may invest in other types of  tax-
exempt
instruments  such  as  municipal  bonds, private  activity  bonds  and 
pollution
control bonds, provided they have remaining  maturities of 13 months or less  
at
the time of purchase.
 
   The  payment of principal and interest on most securities purchased by a 
Fund
will depend  upon the  ability of  the issuers  to meet  their obligations.  
The
District  of  Columbia,  each  state,  each  of  their  political  
subdivisions,
agencies, instrumentalities,  and authorities  and  each multi-state  agency  
of
which  a state is a member  is a separate "issuer" as  that term is used in 
this
Statement  of   Additional  Information   and  the   Funds'  Prospectuses.   
The
non-governmental  user of facilities financed by  private activity bonds is 
also
considered to be an "issuer."
 
                                       9
<PAGE>
ADDITIONAL PURCHASE AND REDEMPTION INFORMATION
IN GENERAL
 
   
Information on how to purchase and redeem each Fund's shares is included in  
the
applicable  Prospectus. The issuance of a Fund's  shares is recorded on a 
Fund's
books, and share certificates are not issued.
    
 
   
   The regulations  of  the  Comptroller of  the  Currency  (the  
"Comptroller")
provide  that funds held in a fiduciary  capacity by a national bank approved 
by
the Comptroller to exercise fiduciary powers must be invested in accordance 
with
the instrument establishing the fiduciary relationship and local law. The  
Trust
believes  that the  purchase of  Municipal Money  Market Fund  or Tax-Free 
Money
Market Fund shares by  such national banks acting  on behalf of their  
fiduciary
accounts  is  not  contrary to  applicable  regulations if  consistent  with 
the
particular account and proper under the law governing the administration of  
the
account.
    
 
   
   Conflict  of interest restrictions  may apply to  an institution's receipt 
of
compensation paid by a  Fund on fiduciary  funds that are  invested in a  
Fund's
Class  B  or Class  C  shares. Institutions,  including  banks regulated  by 
the
Comptroller and  investment advisers  and other  money managers  subject to  
the
jurisdiction   of  the  SEC,  the  Department   of  Labor  or  state  
securities
commissions,  are  urged  to  consult  their  legal  advisors  before  
investing
fiduciary funds in a Fund's Class B or Class C shares.
    
 
   Prior  to effecting a  redemption of shares  represented by certificates, 
The
Shareholder Services Group, Inc. ("TSSG"), the Trust's transfer agent, must 
have
received such certificates at its  principal office. All such certificates  
must
be endorsed by the redeeming shareholder or accompanied by a signed stock 
power,
in each instance with the signature guaranteed by a commercial bank, a member 
of
a  major stock  exchange or other  eligible guarantor  institution, unless 
other
arrangements satisfactory  to a  Fund  have previously  been  made. A  Fund  
may
require  any  additional information  reasonably  necessary to  evidence  that 
a
redemption has been duly authorized.
 
   
   Under the 1940 Act, a  Fund may suspend the  right of redemption or  
postpone
the  date of payment  upon redemption for  any period during  which the New 
York
Stock Exchange ("Exchange") is closed, other than customary weekend and  
holiday
closings,  or during  which trading  on said  Exchange is  restricted, or 
during
which (as determined by the SEC by rule or regulation) an emergency exists as  
a
result  of which disposal or valuation of portfolio securities is not 
reasonably
practicable, or for such other periods as  the SEC may permit. (A Fund may  
also
suspend  or postpone  the recordation  of the  transfer of  its shares  upon 
the
occurrence of any of the foregoing  conditions.) In addition, a Fund may  
redeem
shares  involuntarily  in  certain  other instances  if  the  Board  of 
Trustees
determines that failure to redeem may have material adverse consequences to 
that
Fund's shareholders in general. Each Fund  is obligated to redeem shares  
solely
in  cash up to $250,000 or 1% of such Fund's net asset value, whichever is 
less,
for any  one shareholder  within a  90-day period.  Any redemption  beyond  
this
amount  will  also be  in  cash unless  the  Board of  Trustees  determines 
that
conditions exist which make payment of redemption proceeds wholly in cash 
unwise
or undesirable. In  such a case,  a Fund may  make payment wholly  or partly  
in
readily  marketable securities or other property, valued in the same way as 
that
Fund determines net asset value. See "Net  Asset Value" below for an example  
of
when such redemption or form of payment might be appropriate. Redemption in 
kind
is
    
 
                                       10
<PAGE>
not  as liquid as  a cash redemption.  Shareholders who receive  a redemption 
in
kind may incur transaction costs, if they sell such securities or property,  
and
may  receive less than the redemption value  of such securities or property 
upon
sale, particularly where such securities are sold prior to maturity.
 
   
   Any institution  purchasing shares  on behalf  of separate  accounts will  
be
required  to hold  the shares  in a  single nominee  name (a  "Master 
Account").
Institutions investing in more than one of the Trust's portfolios or classes  
of
shares  must maintain a separate  Master Account for each  portfolio or class 
of
shares. Sub-accounts may be established by name or number either when the 
Master
Account is opened or later.
    
 
NET ASSET VALUE
 
Each Fund's net asset value per share is calculated by dividing the total  
value
of  the assets belonging to such Fund, less the value of any liabilities 
charged
to  such  Fund,  by  the  total   number  of  that  Fund's  shares   
outstanding
(irrespective  of class or series). "Assets belonging  to" a Fund consist of 
the
consideration received  upon  the issuance  of  Fund shares  together  with  
all
income,  earnings,  profits and  proceeds derived  from the  investment 
thereof,
including  any  proceeds  from  the  sale,  exchange  or  liquidation  of   
such
investments,  any  funds  or  payments derived  from  any  reinvestment  of 
such
proceeds and a portion  of any general  assets of the Trust  not belonging to  
a
particular  portfolio. Assets  belonging to a  Fund are charged  with the 
direct
liabilities of that  Fund and with  a share  of the general  liabilities of  
the
Trust  allocated on a  daily basis in  proportion to the  relative net assets 
of
that Fund and the  Trust's other portfolios. Determinations  made in good  
faith
and  in accordance with generally accepted  accounting principles by the 
Trust's
Board of Trustees as to the allocation of any assets or liabilities with 
respect
to a Fund are conclusive.
 
   As stated in the applicable Prospectus,  in computing the net asset value  
of
its  shares for purposes of sales and  redemptions, each Fund uses the 
amortized
cost method of valuation. Under this method, a Fund values each of its 
portfolio
securities at cost  on the date  of purchase and  thereafter assumes a  
constant
proportionate  amortization of  any discount  or premium  until maturity  of 
the
security. As  a  result, the  value  of a  portfolio  security for  purposes  
of
determining  net asset value normally does not change in response to 
fluctuating
interest rates. While the amortized cost method provides certainty in  
portfolio
valuation,  it may result in valuations of  a Fund's securities which are 
higher
or lower than the market value of such securities.
 
   In connection with its use of amortized cost valuation, each Fund limits  
the
dollar-weighted  average maturity of its portfolio to  not more than 90 days 
and
does not  purchase any  instrument with  a remaining  maturity of  more than  
13
months  (397 days) (with certain exceptions).  The Trust's Board of Trustees 
has
also established, pursuant to rules promulgated by the SEC, procedures that  
are
intended  to stabilize  each Fund's  net asset value  per share  for purposes 
of
sales and redemptions  at $1.00.  Such procedures include  the determination  
at
such intervals as the Board deems appropriate, of the extent, if any, to which 
a
Fund's net asset value per share calculated by using available market 
quotations
deviates  from $1.00 per share.  In the event such  deviation exceeds 1/2 of 
1%,
the Board will promptly  consider what action, if  any, should be initiated.  
If
the  Board  believes  that the  amount  of  any deviation  from  a  Fund's 
$1.00
amortized cost price per share may  result in material dilution or other  
unfair
results  to investors or existing  shareholders, it will take  such steps as 
its
considers  appropriate  to  eliminate  or   reduce  to  the  extent   
reasonably
practicable any such dilution or unfair results. These steps may include 
selling
portfolio instruments prior to maturity to realize capital gains or losses or 
to
shorten  a Fund's average portfolio maturity, redeeming shares in kind, 
reducing
or withholding dividends, or utilizing a net asset value per share determined 
by
using available market quotations.
 
                                       11
<PAGE>
MANAGEMENT OF THE FUNDS
TRUSTEES AND OFFICERS
 
The  Trust's  trustees  and  executive  officers,  their  addresses,   
principal
occupations during the past five years and other affiliations are as follows:
 
   
<TABLE>
<CAPTION>
                                                                      
PRINCIPAL OCCUPATIONS DURING PAST 5 YEARS AND
NAME AND ADDRESS                     POSITION WITH THE TRUST                        
OTHER AFFILIATIONS
------------------------------    ------------------------------    ----------
----------------------------------------
<S>                               <C>                               <C>
Steven Spiegel(1)(2)              Vice Chairman of the Board and    Managing 
Director, Lehman Brothers; President,
 3 World Financial Center         Trustee                           Lehman 
Brothers Global Asset Management Inc.;
 New York, NY 10285                                                 formerly 
Chairman, Lehman Brothers International
                                                                    (Europe)
Charles F. Barber(2)(3)           Trustee                           
Consultant; formerly Chairman of the Board, ASARCO
 66 Glenwood Drive                                                  
Incorporated
 Greenwich, CT 06830
Burt N. Dorsett(2)(3)             Trustee                           Managing 
Partner, Dorsett McCabe Capital
 201 East 62nd Street                                               
Management, Inc., an investment counselling firm;
 New York, NY 10022                                                 Director, 
Research Corporation Technologies, a
                                                                    non-profit 
patent-clearing and licensing
                                                                    operation; 
formerly President, Westinghouse
                                                                    Pension 
Investments Corporation; formerly
                                                                    Executive 
Vice President and Trustee, College
                                                                    Retirement 
Equities Fund, Inc., a variable annuity
                                                                    fund; and 
formerly Investment Officer, University
                                                                    of 
Rochester
Edward J. Kaier(2)(3)             Trustee                           Partner 
with the law firm of Hepburn Willcox
 1100 One Penn Center                                               Hamilton & 
Putnam
 Philadelphia, PA 19103
S. Donald Wiley(2)(3)             Trustee                           Vice 
Chairman and Trustee, H.J. Heinz Company
 USX Tower                                                          
Foundation; prior to October 1990, Senior Vice
 Pittsburgh, PA 15219                                               President, 
General Counsel and Secretary, H.J.
                                                                    Heinz 
Company
</TABLE>
    
 
                                       12
<PAGE>
   
<TABLE>
<CAPTION>
                                                                      
PRINCIPAL OCCUPATIONS DURING PAST 5 YEARS AND
NAME AND ADDRESS                     POSITION WITH THE TRUST                        
OTHER AFFILIATIONS
------------------------------    ------------------------------    ----------
----------------------------------------
<S>                               <C>                               <C>
Peter Meenan                      President                         Managing 
Director of Lehman Brothers; President of
 260 Franklin Street                                                Lehman 
Brothers Institutional Funds Group Trust;
 Boston, MA 02110                                                   formerly, 
Director, Senior Vice President and
                                                                    Director 
of Institutional Fund Services, The
                                                                    Boston 
Company Advisors, Inc. from February 1984
                                                                    to May 
1993; Director, Funds Distributor, Inc.
                                                                    (1992-
1993); Senior Vice President, The Boston
                                                                    Company 
Advisors, Inc. from August 1984 to May
                                                                    1993
John M. Winters                   Vice President and Investment     Senior 
Vice President and Senior Money Market
 3 World Financial Center         Officer                           Portfolio 
Manager, Lehman Brothers, Global Asset
 New York, NY 10285                                                 Management 
Inc.; formerly Product Manager with
                                                                    Lehman 
Brothers Capital Markets Group
Michael C. Kardok                 Treasurer                         Vice 
President, The Shareholder Services Group,
 One Exchange Place                                                 Inc.; 
prior to May 1994, Vice President, The
 Boston, MA 02109                                                   Boston 
Company Advisors, Inc.
Patricia L. Bickimer              Secretary                         Vice  
President and Associate General Counsel, The
 One Exchange Place                                                 
Shareholder Services  Group,  Inc.; prior  to  May
 Boston, MA 02109                                                   1994,   
Vice   President  and   Associate  General
                                                                    Counsel, 
The Boston Company Advisors, Inc.
<FN>
----------
1. Considered by the Trust to be "interested persons" of the Trust as defined 
in
the 1940 Act.
2. Audit Committee Member.
3. Nominating Committee Member.
</TABLE>
    
 
   
   One of the Trust's  trustees, Mr. Dorsett, serves  as trustee or director  
of
other  investment  companies  for  which  Lehman  Brothers  and  LBGAM  serve 
as
distributor and investment adviser.
    
 
   
   No employee of Lehman Brothers, LBGAM, or TSSG receives any compensation 
from
the Trust for acting as an officer or trustee of the Trust. The Trust pays  
each
trustee who is not a director, officer or employee of Lehman Brothers, LBGAM, 
or
TSSG  or any  of their affiliates,  a fee of  $20,000 per annum  plus $1,250 
per
meeting attended and reimburses them for travel and out-of-pocket expenses.
    
 
                                       13
<PAGE>
   
   For the  fiscal  period February  8,  1993 (commencement  of  operations)  
to
January 31, 1994, such fees and expenses totalled $9,589 for the Municipal 
Money
Market  Fund and $8,453 for  the Tax-Free Money Market  Fund and $94,754 for 
the
Trust in the aggregate. As of May  13, 1994, Trustees and officers of the  
Trust
as  a group beneficially  owned less than  1% of the  outstanding shares of 
each
Fund.
    
 
   
   By virtue of the responsibilities assumed by Lehman Brothers, LBGAM, TSSG 
and
their affiliates under  their respective  agreements with the  Trust, the  
Trust
itself requires no employees in addition to its officers.
    
 
   
INVESTMENT ADVISER
    
   
LBGAM  serves as  the investment  adviser to each  of the  Funds. The 
investment
advisory agreements  provide  that  LBGAM  is  responsible  for  all  
investment
activities  of the Fund, including  executing portfolio strategy, effecting 
Fund
purchase and sale transactions and  employs professional portfolio managers  
and
security analysts who provide research for the Funds.
    
 
   
   The  Investment Advisory  Agreements with respect  to each of  the Funds 
will
continue in  effect  for  a period  of  two  years from  February  5,  1993  
and
thereafter from year to year provided the continuance is approved annually(i) 
by
the  Trust's Board of Trustees or (ii) by  a vote of a "majority" (as defined 
in
the 1940 Act) of a Fund's  outstanding voting securities, except that in  
either
event  the continuance  is also approved  by a  majority of the  Trustees of 
the
Trust who  are not  "interested persons"  (as  defined in  the 1940  Act).  
Each
Investment  Advisory Agreement may be terminated  (i) on 60 days' written 
notice
by the Trustees of the Trust, (ii) by vote of holders of a majority of a  
Fund's
outstanding  voting  securities,  or  upon 90  days'  written  notice  by 
Lehman
Brothers, or (iii) automatically in the  event of its assignment (as defined  
in
the 1940 Act).
    
 
   
   As  compensation for LBGAM's services  rendered to the Fund,  the Fund pays 
a
fee, computed daily and paid monthly, at the annual rate of .30% of the  
average
daily  net assets of the Fund. For  the period February 8, 1993 (commencement 
of
operations) to  January  31, 1994.  LBGAM  received  net advisory  fees  in  
the
following  amounts: the Municipal  Money Market Fund,  $103,318 and the Tax-
Free
Money Market Fund, $15,640. Waivers by LBGAM of advisory fees and  
reimbursement
of  expenses to which  it was entitled  amounted to: the  Municipal Money 
Market
Fund, $103,318 and $133,212,  respectively, and the  Tax-Free Money Market  
Fund
$15,640  and $139,234,  respectively. In  order to  maintain competitive 
expense
ratios during 1994 through 1997,  the investment adviser and administrator  
have
agreed to reimburse the Funds if total operating expenses exceed certain 
levels.
See "BACKGROUND AND EXPENSE INFORMATION" in each Fund's Prospectus.
    
 
   
PRINCIPAL HOLDERS
    
   
At May 13, 1994, the principal holders of each Fund were as follows:
    
 
   
<TABLE>
<CAPTION>
                                                                         
PERCENTAGE OF
                                                                         
SHARES HELD OF
MUNICIPAL MONEY MARKET FUND                NAME AND ADDRESS               
RECORD ONLY
------------------------------    -----------------------------------    -----
---------
<S>                               <C>                                    <C>
Class A Shares                    Nordstrom, Inc.                                 
14.3%
                                  P.O. Box 1170
                                  Seattle, WA 98111
</TABLE>
    
 
                                       14
<PAGE>
   
<TABLE>
<CAPTION>
                                                                         
PERCENTAGE OF
                                                                         
SHARES HELD OF
MUNICIPAL MONEY MARKET FUND                NAME AND ADDRESS               
RECORD ONLY
------------------------------    -----------------------------------    -----
---------
<S>                               <C>                                    <C>
                                  Hanover Insurance Company                       
12.1
                                  440 Financial Group of Worcester
                                  440 Lincoln Street
                                  Worcester, MA 01653
                                  Employers Reinsurance Corp.                     
8.85%
                                  P.O. Box 2991
                                  Overland Park, KS 66201
                                  National Data Corp.                             
7.27%
                                  One National Data Plaza
                                  Atlanta, GA 30329
</TABLE>
    
 
   
<TABLE>
<CAPTION>
TAX-FREE MONEY MARKET FUND
------------------------------
<S>                               <C>                                    <C>
Class A Shares                    Lehman Brothers Inc.                           
41.67%
                                  World Financial Center
                                  New York, NY 10286
                                  American Security Insurance Co.                
14.82%
                                  Marshall & Isley Trust Co.
                                  1000 No. Water Street
                                  Milwaukee, WI 53202
                                  Troy Savings Bank                               
9.88%
                                  P.O. Box 58
                                  Troy, NY 12181
                                  Exar Corporation                                
6.06%
                                  P.O. Box 49007
                                  2222 Qume Drive
                                  San Jose, CA 95161
                                  Oster & Co.                                     
5.85%
                                  P.O. Box 1338
                                  Victoria, TX 77902
</TABLE>
    
 
   
   As  of May 13, 1994, the Class B and Class C shares of the Funds had not 
been
offered to the public and all outstanding shares were held by Lehman Brothers.
    
 
   
   The shareholders described  above have  indicated that they  each hold  
their
shares on behalf of various accounts and not as beneficial owners. To the 
extent
that any shareholder is the beneficial owner of more than 25% of the 
outstanding
shares  of a Fund,  such shareholder may be  deemed to be  a "control person" 
of
that Fund for purposes of the 1940 Act.
    
 
                                       15
<PAGE>
   
ADMINISTRATOR AND TRANSFER AGENT
    
   
TSSG, a subsidiary of First Data Corporation, is located at One Exchange  
Place,
Boston,  Massachusetts  02109,  and  serves  as  the  Trust's  administrator 
and
transfer Agent. As  the Funds'  administrator, TSSG  has agreed  to provide  
the
following  services: (i)  assist generally  in supervising  a Fund's 
operations,
providing and supervising the operation  of an automated data processing  
system
to  process purchase and  redemption orders, providing  information concerning 
a
Fund to its shareholders of  record, handling shareholder problems,  
supervising
the  services of  employees whose  principal responsibility  and function  is 
to
preserve and strengthen  shareholder relations and  monitoring the  
arrangements
pertaining  to  a Fund's  agreements  with Service  Organizations;  (ii) 
prepare
reports to the Funds'  shareholders and prepare tax  returns and reports to  
and
filings  with the SEC; (iii) compute the respective net asset value per share 
of
each Fund; (iv) provide the  services of certain persons  who may be elected  
as
trustees or appointed as officers of the Trust by the Board of Trustees; and 
(v)
maintain  the registration  or qualification of  a Fund's shares  for sale 
under
state securities laws. TSSG receives, as compensation for its services  
rendered
under  an administration  agreement, an  administrative fee,  computed daily 
and
paid monthly, at the annual rate of .10% of the average daily net assets of 
each
Fund. TSSG pays  Boston Safe,  the Fund's custodian,  a portion  of its  
monthly
administration fee for custody services rendered to the Funds.
    
 
   
   Prior  to  May  6,  1994,  The Boston  Company  Advisors,  Inc.  ("TBCA"), 
an
wholly-owned  subsidiary  of  Mellon  Bank  Corporation  ("Mellon"),  served  
as
administrator  of the Funds.  On May 6,  1994, TSSG acquired  TBCA's third 
party
mutual fund administration business from Mellon, and each Fund's  
administration
agreement  with  TBCA was  assigned to  TSSG.  For the  period February  8, 
1993
(commencement  of  operations)   to  January   31,  1994,   TSSG  received   
net
administration  fees in the following amounts:  the Municipal Money Market 
Fund,
$103,318  and  the  Tax-Free  Money   Market  Fund,  $15,640.  Waivers  by   
the
administrator  of administration fees and reimbursement  of expenses to which 
it
was entitled  amounted  to  the  following: the  Municipal  Money  Market  
Fund,
$103,318  and $28,669, respectively, and the Tax-Free Money Market Fund, 
$15,640
and $10,485,  respectively.  In order  to  maintain competitive  expense  
ratios
during  1994 through 1997, the investment  adviser and administrator have 
agreed
to reimburse the Funds  if total operating expenses  exceed certain levels.  
See
"BACKGROUND AND EXPENSE INFORMATION" in each Fund's Prospectus.
    
 
   
   Under  the transfer agency agreement,  TSSG maintains the shareholder 
account
records for the Trust, handles  certain communications between shareholders  
and
the  Trust and distributes dividends and  distributions payable by the Trust 
and
produces statements  with respect  to account  activity for  the Trust  and  
its
shareholders.  For these services, TSSG receives  a monthly fee based on 
average
annual assets and is reimbursed for out-of-pocket expenses.
    
 
DISTRIBUTOR
 
   
Lehman Brothers acts as a distributor of each Fund's shares. Each Fund's  
shares
are sold on a continuous basis by Lehman Brothers as agent. The distributor 
pays
the  cost  of printing  and  distributing prospectuses  to  persons who  are 
not
shareholders of a  Fund (excluding preparation  and printing expenses  
necessary
for  the continued registration  of a Fund's shares)  and of preparing, 
printing
and distributing all sales literature. No  compensation is payable by a Fund  
to
Lehman Brothers for its distribution services.
    
 
   Lehman  Brothers  is comprised  of  several major  operating  business 
units.
Lehman Brothers Institutional Funds  Group is the  business group within  
Lehman
Brothers that is primarily responsible for the distribution
 
                                       16
<PAGE>
and  client  service  requirements of  the  Trust and  its  shareholders. 
Lehman
Brothers Institutional  Funds  Group  has been  serving  institutional  
clients'
investment  needs exclusively for  more than 20  years, emphasizing high 
quality
individualized service to clients.
 
   
CUSTODIAN
    
   
Boston Safe Deposit and Trust Company ("Boston Safe"), a wholly owned 
subsidiary
of  The  Boston  Company,  Inc.,  is  located  at  One  Boston  Place,   
Boston,
Massachusetts  02108, and  serves as  the custodian of  the Trust  pursuant to 
a
custody agreement. Under the  custody agreement, Boston  Safe holds each  
Fund's
portfolio  securities  and keeps  all necessary  accounts  and records.  For 
its
services, Boston Safe  receives a monthly  fee based upon  the month-end  
market
value  of securities  held in custody  and also  receives securities 
transaction
charges, including  out-of-pocket expenses.  The assets  of the  Trust are  
held
under bank custodianship in compliance with the 1940 Act.
    
 
SERVICE ORGANIZATIONS
 
   
As  stated in the Funds' Prospectuses, a  Fund will enter into an agreement 
with
each financial institution which  may purchases Class C  shares. The Funds  
will
enter   into  an  agreement  with  each  Service  Organization  whose  
customers
("Customers") are the  beneficial owners  of Class  C shares  that requires  
the
Service  Organization to provide certain  services to customers in 
consideration
of such Fund's  payment of .35%  of the average  daily net asset  value of  
that
Fund's  Class  C shares  held by  the  Service Organization  for the  benefit 
of
Customers. Such services  include: (i) aggregating  and processing purchase  
and
redemption  requests  from Customers  and  placing net  purchase  and 
redemption
orders with a Fund's distributor; (ii) processing dividend payments from a  
Fund
on  behalf of Customers;  (iii) providing information  periodically to 
Customers
showing their positions in a Fund's  shares; (iv) arranging for bank wires;  
(v)
responding  to  Customer inquiries  relating to  the  services performed  by 
the
Service Organization and  handling correspondence;  (vi) forwarding  
shareholder
communications  from a  Fund (such as  proxies, shareholder  reports, annual 
and
semi-annual financial statements, and dividend, distribution and tax notices) 
to
Customers; (vii) acting as  shareholder of record or  nominee; and (viii)  
other
similar account administrative services. In addition, a Service Organization, 
at
its  option, may also provide  to its Customers of Class  C shares (a) a 
service
that invests the  assets of  their accounts in  shares pursuant  to specific  
or
pre-authorized  instructions; (b) provide sub-accounting  with respect to 
shares
beneficially owned by Customers or the information necessary for sub-
accounting;
and (c) provide checkwriting services. Service Organizations that purchase 
Class
C shares will  also provide  assistance in connection  with the  support of  
the
distribution  of Class C shares to its Customers, including marketing 
assistance
and the forwarding to Customers of sales literature and advertising provided  
by
a distributor of the shares.
    
 
   
   Holders  of Class B shares  of a Fund will receive  the services set forth 
in
(i) and (v)  and may  receive one or  more of  the services set  forth in  
(ii),
(iii),  (iv), (vi)  and (viii)  above. In  consideration of  the services  to 
be
rendered in  connection with  this  Class of  shares  pursuant to  an  
agreement
between  the Fund and  the Service Organization,  the Fund will  pay the 
Service
Organization .25% of the  average daily net  asset value of  the Class B  
shares
held  by the  Service Organization. A  Service Organization, at  its option, 
may
also provide to its Customers of  Class B shares services including: (a)  
acting
as  shareholder of record and as nominee; (b) providing Customers with a 
service
that invests the  assets of  their accounts in  shares pursuant  to specific  
or
pre-authorized  instruction; (c)  provide sub-accounting with  respect to 
shares
beneficially owned by Customers or the information necessary for sub-
accounting;
(d) providing information periodically to  Customers showing their positions  
in
shares;   (e)   arranging   for   bank   wires;   (f)   forwarding   
shareholder
    
 
                                       17
<PAGE>
   
communications from the Fund (such  as proxies, shareholder reports, annual  
and
semi-annual financial statements and dividend, distribution, and tax notices) 
to
Customers;   (g)  providing   reasonable  assistance  in   connection  with  
the
distribution of  shares  to Customers;  and  (h) providing  such  other  
similar
services  as the Fund may reasonably  request to the extent Service 
Organization
is permitted to do so under applicable statutes, rules, or regulations.
    
 
   Each  Fund's  agreements  with  Service  Organizations  are  governed  by   
a
Shareholder  Services Plan  (the "Plan")  that has  been adopted  by the 
Trust's
Board of Trustees pursuant to an exemptive order granted by the SEC. Under  
this
Plan, the Board of Trustees reviews, at least quarterly, a written report of 
the
amounts expended under each Fund's agreements with Service Organizations and 
the
purposes   for  which  the  expenditures  were   made.  In  addition,  a  
Fund's
arrangements with Service Organizations must be approved annually by a  
majority
of  the  Trust's trustees,  including a  majority  of the  trustees who  are 
not
"interested persons" of the Trust as defined in the 1940 Act and have no  
direct
or   indirect  financial  interest  in  such  arrangements  (the  
"Disinterested
Trustees").
 
   The Board  of Trustees  has approved  each Fund's  arrangements with  
Service
Organizations  based on information provided  by the Trust's service 
contractors
that there is a  reasonable likelihood that the  arrangements will benefit  
such
Fund  and  its  shareholders  by  affording  the  Fund  greater  flexibility  
in
connection with the servicing  of the accounts of  the beneficial owners of  
its
shares  in an efficient manner. Any  material amendment to a Fund's 
arrangements
with Service Organizations must be approved  by a majority of the Trust's  
Board
of  Trustees (including a majority of the  Disinterested Trustees). So long as 
a
Fund's arrangements with Service Organizations are in effect, the selection  
and
nomination  of  the  members  of  the Trust's  Board  of  Trustees  who  are 
not
"interested persons" (as defined in the 1940 Act) of the Trust will be 
committed
to the discretion of such non-interested trustees.
 
   
   For the period February 8, 1993  (commencement of operations) to January  
31,
1994, neither Fund paid any service fees.
    
 
EXPENSES
 
   
A  Fund's expenses  include taxes,  interest, fees  and salaries  of the 
Trust's
trustees and  officers who  are  not directors,  officers  or employees  of  
the
Trust's  service  contractors, SEC  fees,  state securities  qualification 
fees,
costs of preparing  and printing  prospectuses for regulatory  purposes and  
for
distribution  to shareholders,  advisory, sub-advisory  and administration 
fees,
charges of the  custodian and  of the  transfer and  dividend disbursing  
agent,
Service  Organization  fees, certain  insurance  premiums, outside  auditing 
and
legal expenses, costs of  shareholder reports and  shareholder meetings and  
any
extraordinary  expenses. The Funds  also pay for  brokerage fees and 
commissions
(if any)  in connection  with the  purchase and  sale of  portfolio  
securities.
LBGAM, and TSSG have agreed that if, in any fiscal year, the expenses borne by 
a
Fund  exceed  the  applicable  expense  limitations  imposed  by  the 
securities
regulations of  any  state  in which  shares  of  that Fund  are  registered  
or
qualified for sale to the public, they will reimburse the Fund for any excess 
to
the  extent required by such regulations. Unless otherwise required by law, 
such
reimbursement would be accrued and paid on the same basis that the advisory  
and
administration fees are accrued and paid by that Fund. To each Fund's 
knowledge,
of the expense limitations in effect on the date of this Statement of 
Additional
Information,  none is more restrictive than two and one-half percent (2 1/2%) 
of
the first $30 million of a Fund's average annual net assets, two percent (2%) 
of
the next $70  million of  the average  annual net  assets and  one and  one-
half
percent (1 1/2%) of the remaining average annual net assets.
    
 
                                       18
<PAGE>
ADDITIONAL INFORMATION CONCERNING TAXES
 
The   following  summarizes  certain  additional  tax  considerations  
generally
affecting a  Fund and  its shareholders  that are  not described  in the  
Funds'
Prospectuses.  No attempt is made  to present a detailed  explanation of the 
tax
treatment of a Fund or its shareholders or possible legislative changes, and 
the
discussion here and in the applicable Prospectus is not intended as a 
substitute
for careful  tax planning.  Investors  should consult  their tax  advisors  
with
specific reference to their own tax situation.
 
   
   As  stated in each Prospectus,  each Fund is treated  as a separate 
corporate
entity under the Code and qualified as a regulated investment company under  
the
Code  and intends to  so qualify in future  years. In order to  so qualify for 
a
taxable year, a Fund must satisfy the distribution requirement described in  
the
Prospectuses,  derive at least 90% of its gross income for the year from 
certain
qualifying sources, comply with certain diversification requirements and  
derive
less  than  30%  of  its gross  income  for  the  year from  the  sale  or 
other
disposition of securities and certain other investments held for less than 
three
months. Interest (including original issue discount and, with respect to 
taxable
debt securities, accrued  market discount)  received by  a Fund  at maturity  
or
disposition of a security held for less than three months will not be treated 
as
gross  income derived from the sale or other disposition of such security 
within
the meaning  of  the  30%  requirement.  However,  any  other  income  which  
is
attributable  to realized  market appreciation will  be treated  as gross 
income
from the sale or other disposition of securities for this purpose.
    
 
   As described above and  in each Fund's Prospectus,  each Fund is designed  
to
provide  institutions with  current tax-exempt  interest income.  A Fund  is 
not
intended to constitute  a balanced investment  program and is  not designed  
for
investors seeking capital appreciation or maximum tax-exempt income 
irrespective
of  fluctuations  in principal.  Shares  of a  Fund  would not  be  suitable 
for
tax-exempt institutions and may not  be suitable for retirement plans  
qualified
under  Section 401 of the Code, H.R. 10 plans and individual retirement 
accounts
since such plans and accounts are generally tax-exempt and, therefore, not  
only
would  not  gain  any  additional  benefit  from  such  Fund's  dividends  
being
tax-exempt but also  such dividends  would be  taxable when  distributed to  
the
beneficiary.  In  addition, a  Fund  may not  be  an appropriate  investment 
for
entities which  are  "substantial  users"  of  facilities  financed  by  
private
activity bonds or "related persons" thereof. "Substantial user" is defined 
under
U.S.  Treasury Regulations to  include a non-exempt person  who regularly uses 
a
part of such facilities in his or her trade or business and whose gross 
revenues
derived with respect  to the facilities  financed by the  issuance of bonds  
are
more  than 5% of the total revenues derived  by all users of such facilities, 
or
who occupies more than 5% of the usable area of such facilities or for whom 
such
facilities or a  part thereof  were specifically  constructed, reconstructed  
or
acquired.  "Related persons" include certain related natural persons, 
affiliated
corporations, a  partnership and  its  partners and  an  S Corporation  and  
its
shareholders.
 
   In order for a Fund to pay exempt-interest dividends for any taxable year, 
at
the  close of  each quarter of  its taxable year  at least 50%  of the 
aggregate
value of such Fund's assets  must consist of exempt-interest obligations.  
After
the  close  of its  taxable year,  a Fund  will notify  its shareholders  of 
the
portion of the dividends paid by such Fund which constitutes an  exempt-
interest
dividend  with respect  to such taxable  year. However, the  aggregate amount 
of
dividends so designated  by a Fund  cannot exceed  the excess of  the amount  
of
interest exempt from tax under Section 103 of the Code received by that Fund 
for
the  taxable year over  any amounts disallowed as  deductions under Sections 
265
and 171(a)(2) of the Code. The
 
                                       19
<PAGE>
percentage of total dividends paid  by a Fund with  respect to any taxable  
year
which  qualifies as federal  exempt-interest dividends will be  the same for 
all
shareholders of that Fund receiving dividends for
such year.
 
   Interest on indebtedness  incurred by a  shareholder to purchase  or carry  
a
Fund's  shares is not  deductible for federal  income tax purposes  if that 
Fund
distributes exempt-interest dividends during the shareholder's taxable year.
 
   While the Funds  do not expect  to realize long-term  capital gains, any  
net
realized  long-term capital  gains will be  distributed at  least annually. 
Each
Fund will generally have no  tax liability with respect  to such gains, and  
the
distributions  will be taxable to each  Fund's shareholders as long-term 
capital
gains, regardless of how  long a shareholder has  held such Fund's shares.  
Such
distributions  will be designated as a capital gain dividend in a written 
notice
mailed by the Fund to its shareholders not later than 60 days after the close 
of
a Fund's taxable year.
 
   Similarly, while  the Funds  do not  expect to  earn any  investment  
company
taxable  income, taxable income earned  by each Fund will  be distributed to 
its
shareholders. In general, a Fund's investment company taxable income will be 
its
taxable income (for example,  any short-term capital  gains) subject to  
certain
adjustments  and excluding the excess of any  net long-term capital gain for 
the
taxable year over the net short-term capital loss, if any, for such year. A 
Fund
will be taxed  on any undistributed  investment company taxable  income of  
such
Fund.  To the extent  such income is distributed  by a Fund  (whether in cash 
or
additional shares), it will be taxable  to that Fund's shareholders as  
ordinary
income.
 
   A  4% nondeductible excise  tax is imposed  on regulated investment 
companies
that fail currently to  distribute an amount equal  to specified percentages  
of
their  ordinary taxable  income and capital  gain net income  (excess of 
capital
gains over capital losses). Each  Fund intends to make sufficient  
distributions
or  deemed distributions of any ordinary taxable income and any capital gain 
net
income prior to the end of each calendar year to avoid liability for this 
excise
tax.
 
   If for  any taxable  year a  Fund does  not qualify  for tax  treatment as  
a
regulated  investment company, all of that Fund's taxable income will be 
subject
to tax at  regular corporate rates  without any deduction  for distributions  
to
Fund  shareholders. In such event,  dividend distributions to shareholders 
would
be taxable to shareholders  to the extent of  that Fund's earnings and  
profits,
and would be eligible for the dividends received deduction for corporations.
 
   Each Fund will be required in certain cases to withhold and remit to the 
U.S.
Treasury  31% of taxable dividends  or 31% of gross  proceeds realized upon 
sale
paid to its shareholders who have failed to provide a correct tax 
identification
number in the manner required, or who are subject to withholding by the 
Internal
Revenue Service for  failure properly  to include  on their  return payments  
of
taxable interest or dividends, or who have failed to certify to a Fund that 
they
are  not subject to backup  withholding when required to do  so or that they 
are
"exempt recipients."
 
   
   Although each Fund expects  to qualify each year  as a "regulated  
investment
company"  and to be relieved  of all or substantially  all federal income 
taxes,
depending upon the extent  of its activities in  states and localities in  
which
its  offices are maintained, in which  its agents or independent contractors 
are
located or in which they are otherwise deemed to be conducting business, a  
Fund
may be subject to the tax laws of such states or localities.
    
 
                                       20
<PAGE>
DIVIDENDS
 
Each Fund's net investment income for dividend purposes consists of (i) 
interest
accrued  and discount  earned on that  Fund's assets, (ii)  less amortization 
of
market premium on such  assets, accrued expenses  directly attributable to  
that
Fund,  and the general expenses (E.G.,  legal, accounting and trustees' fees) 
of
the Trust prorated to  such Fund on  the basis of its  relative net assets.  
The
amortization  of  market discount  on a  Fund's  assets is  not included  in 
the
calculation of net income.
 
   Realized  and  unrealized  gains  and  losses  on  portfolio  securities  
are
reflected in net asset value. In addition, the Fund's Class B and Class C 
shares
bear  exclusively the expense of fees paid to Service Organizations with 
respect
to the  relevant  Class of  shares.  See "Management  of  the Funds  --  
Service
Organizations."
 
   As  stated, the Trust uses  its best efforts to  maintain the net asset 
value
per share  of each  Fund at  $1.00.  As a  result of  a significant  expense  
or
realized or unrealized loss incurred by a Fund, it is possible that a Fund's 
net
asset value per share may fall below $1.00.
 
ADDITIONAL YIELD INFORMATION
 
The  "yields,"  "effective yields"  and  "tax-equivalent yields"  are 
calculated
separately for each class of shares of  each Fund. The seven-day yield for  
each
series  of shares in a  Fund is calculated by determining  the net change in 
the
value of a hypothetical preexisting account in such Fund which has a balance  
of
one share of the Class involved at the beginning of the period, dividing the 
net
change  by the value of the account at the beginning of the period to obtain 
the
base period return,  and multiplying the  base period return  by 365/7. The  
net
change  in the value  of an account in  a Fund includes  the value of 
additional
shares purchased with dividends from  the original share and dividends  
declared
on the original share and any such additional shares, net of all fees charged 
to
all  shareholder accounts in proportion to the length of the base period and 
the
Fund's average account size, but does not include gains and losses or 
unrealized
appreciation and depreciation. In addition,  the effective yield quotations  
may
be computed on a compounded basis (calculated as described above) by adding 1 
to
the base period return for the Class involved, raising that sum to a power 
equal
to  365/7, and subtracting  1 from the  result. A tax-equivalent  yield for 
each
Class of  a Fund's  shares is  computed by  dividing the  portion of  the  
yield
(calculated  as above)  that is exempt  from federal  income tax by  one minus 
a
stated federal income tax rate and adding  that figure to that portion, if  
any,
of the yield that is not exempt from federal income tax. Similarly, based on 
the
calculations described above, 30-day (or one-month) yields, effective yields 
and
tax-equivalent yields may also be calculated.
 
   
   For  the 7-day period ended January 31, 1994  the yield for Class A shares 
of
the Municipal Money Market Fund was 2.40%, the effective yield was 2.43% and 
the
tax equivalent yield was 3.52%. For the  same period, the yield for the Class  
A
shares  of the  Tax-Free Money  Market Fund was  2.27%, the  effective yield 
was
2.29% and  the tax  equivalent yield  was  3.32%. Without  such fee  waivers  
or
expense reimbursements the 7-day yield, effective yield and tax equivalent 
yield
for the Class A shares of the Municipal Money Market Fund would have been 
2.27%,
2.29%  and  3.32%,  respectively.  The  7-day  yield,  effective  yield  and 
tax
equivalent yield for the Class a shares of the Tax-Free Money Market Fund  
would
have been 2.14%, 2.16% and 3.13%, respectively.
    
 
                                       21
<PAGE>
   
   For  the 30-day period ended January 31, 1994 the yield for Class A shares 
of
the Municipal Money Market Fund was 2.32%, the effective yield was ___% and  
the
tax-equivalent  yield was  3.36%. For  the same  period, the  yield for  Class 
A
shares of the Tax-Free Money Market Fund was 2.24%, the effective yield was 
___%
and the tax  equivalent yield  was 3.25%. Without  such fee  waivers or  
expense
reimbursements  the 30-day yield,  effective yield and  tax equivalent yield 
for
the Class A shares  of the Municipal  Money Market Fund  would have been  
2.19%,
___%  and  3.17%,  respectively.  The  30-day  yield,  effective  yield  and 
tax
equivalent yield for the Class A shares of the Tax-Free Money Market Fund  
would
have been 2.11%, ___% and 3.06%, respectively.
    
 
   
   Class  B  and  Class C  shares  bear the  expenses  of fees  paid  to 
Service
Organizations. As a  result, at any  given time, the  net yield of  Class B  
and
Class  C shares could be up to .25% and .35% lower than the net yield of Class 
A
shares, respectively. The Class B and Class  C shares of the Funds did not  
have
any  activity as of January 31, 1994  and, accordingly, yield information is 
not
available with respect to such classes of shares.
    
 
   Yields will fluctuate, and any quotation of yield should not be considered 
as
representative of  the future  performance of  a Fund.  Since yields  
fluctuate,
yield  data for a  Fund cannot necessarily  be used to  compare an investment 
in
that Fund's shares with bank  deposits, savings accounts and similar  
investment
alternatives  which  often provide  an agreed  or guaranteed  fixed yield  for 
a
stated period of time. Shareholders  should remember that performance and  
yield
are  generally functions of  the kind and  quality of the  investments held in 
a
portfolio, portfolio  maturity, operating  expenses and  market conditions.  
Any
fees charged by banks with respect to customer accounts investing in shares of 
a
Fund  will not be included  in yield calculations; such  fees, if charged, 
would
reduce the actual yield from that quoted.
 
ADDITIONAL DESCRIPTION CONCERNING SHARES
 
The Trust does  not presently  intend to  hold annual  meetings of  
shareholders
except  as  required by  the 1940  Act or  other applicable  law. The  law 
under
certain circumstances provides shareholders with the right to call for a 
meeting
of shareholders to consider the removal of  one or more trustees. To the  
extent
required  by law,  the Trust  will assist  in shareholder  communication in 
such
matters.
 
   As stated in the Funds' Prospectuses, holders  of shares in a Fund will  
vote
in  the  aggregate and  not  by class  or series  on  all matters,  except 
where
otherwise required by  law and except  that only a  Fund's Class B  and Class  
C
shares,  as the case may be, will be  entitled to vote on matters submitted to 
a
vote of  shareholders  pertaining  to  that  Fund's  arrangements  with  
Service
Organizations  with respect to the relevant Class of shares. (See "Management 
of
the Funds  --  Service Organizations.")  Further,  shareholders of  all  of  
the
Trust's  portfolios will vote  in the aggregate  and not by  portfolio except 
as
otherwise required by  law or  when the Board  of Trustees  determines that  
the
matter  to be  voted upon affects  only the  interests of the  shareholders of 
a
particular portfolio. Rule  18f-2 under the  1940 Act provides  that any  
matter
required  to be submitted by the provisions of such Act or applicable state 
law,
or otherwise, to  the holders  of the  outstanding securities  of an  
investment
company  such as the  Trust shall not  be deemed to  have been effectively 
acted
upon unless approved by the holders of  a majority of the outstanding shares  
of
each  portfolio  affected by  the  matter. Rule  18f-2  further provides  that 
a
portfolio shall be deemed to be affected by a matter unless it is clear that 
the
interests of each portfolio in the matter are identical or that the matter  
does
not  affect any  interest of the  portfolio. Under  the Rule the  approval of 
an
investment advisory
 
                                       22
<PAGE>
agreement or any change in a fundamental investment policy would be  
effectively
acted  upon with  respect to a  portfolio only if  approved by the  holders of 
a
majority of the outstanding  voting securities of  such portfolio. However,  
the
Rule  also  provides  that  the ratification  of  the  selection  of 
independent
certified public accountants, the  approval of principal underwriting  
contracts
and the election of trustees are not subject to the separate voting 
requirements
and  may be  effectively acted  upon by  shareholders of  the investment 
company
voting without regard to portfolio.
 
COUNSEL
 
   
Willkie Farr & Gallagher, One Citicorp Center, New York, New York 10022,  
serves
as  counsel of the Trust  and will pass upon the  legality of the shares 
offered
hereby. Willkie Farr & Gallagher also serves as counsel to Lehman Brothers.
    
 
AUDITORS
 
   
Ernst & Young, independent auditors, serve as auditors to the Fund and render 
an
opinion on the Fund's financial statements.
    
 
   
FINANCIAL STATEMENTS
    
 
   
The Trust's  Annual Report  for the  fiscal  period ended  January 31,  1994  
is
incorporated  into this Statement of Additional  Information by reference in 
its
entirety.
    
 
MISCELLANEOUS
 
SHAREHOLDER VOTE
 
As used in this Statement of Additional Information and the Funds' 
Prospectuses,
a "majority of the outstanding shares" of a Fund or of any other portfolio 
means
the lesser of (1) 67%  of that Fund's shares (irrespective  of class) or of  
the
portfolio  represented at a meeting at which the holders of more than 50% of 
the
outstanding shares of that Fund  or such portfolio are  present in person or  
by
proxy, or (2) more than 50% of the outstanding shares of a Fund (irrespective 
of
class) or of the portfolio.
 
SHAREHOLDER AND TRUSTEE LIABILITY
 
   
The  Trust  is  organized as  a  trust under  the  laws of  the  Commonwealth 
of
Massachusetts. Shareholders of such a trust may, under certain circumstances, 
be
held personally liable  (as if they  were partners) for  the obligations of  
the
Trust.The Declaration of Trust of the Trust provides that shareholders shall 
not
be  subject to any personal  liability for the acts  or obligations of the 
Trust
and that every  note, bond,  contract, order or  other undertaking  made by  
the
Trust  shall contain  a provision  to the effect  that the  shareholders are 
not
personally  liable   thereunder.  The   Declaration   of  Trust   provides   
for
indemnification  out of the trust property a Fund of any shareholder of the 
Fund
held personally liable solely  by reason of being  or having been a  
shareholder
and  not because of any acts or  omissions or some other reason. The 
Declaration
of Trust also provides that the Trust shall, upon request, assume the defense 
of
any claim made against any shareholder
    
 
                                       23
<PAGE>
for any act or obligation of the  Trust and satisfy any judgment thereon.  
Thus,
the risk of a shareholder incurring financial loss beyond the amount invested 
in
a  Fund on account of shareholder liability is limited to circumstances in 
which
the Fund itself would be unable to meet its obligations.
 
   The Trust's Declaration  of Trust  provides further  that no  trustee of  
the
Trust  shall be personally liable for or on account of any contract, debt, 
tort,
claim, damage,  judgment  or  decree  arising  out  of  or  connected  with  
the
administration  or  preservation  of the  trust  estate  or the  conduct  of 
any
business of the Trust, nor shall any trustee be personally liable to any  
person
for  any  action  or failure  to  act except  by  reason of  bad  faith, 
willful
misfeasance, gross negligence  in performing  duties, or by  reason of  
reckless
disregard  for the obligations and duties as  trustee. It also provides that 
all
persons having any claim against the trustees or the Trust shall look solely  
to
the  trust property for payment. With  the exceptions stated, the Declaration 
of
Trust provides  that  a  trustee  is entitled  to  be  indemnified  against  
all
liabilities  and expenses reasonably incurred in  connection with the defense 
or
disposition of any proceeding  in which the  trustee may be  involved or may  
be
threatened  with  by reason  of being  or having  been a  trustee, and  that 
the
trustees have the power, but not  the duty, to indemnify officers and  
employees
of  the Trust unless  such persons would  not be entitled  to indemnification 
if
they were in the position of trustee.
 
                                       24
<PAGE>
APPENDIX
DESCRIPTION OF MUNICIPAL OBLIGATION RATINGS
 
COMMERCIAL PAPER RATINGS
 
A Standard  & Poor's  commercial paper  rating is  a current  assessment of  
the
likelihood of timely payment of debt having an original maturity of no more 
than
365  days. The  following summarizes the  two highest rating  categories used 
by
Standard & Poor's for commercial paper:
 
   A-1 -- Issue's  degree of safety  regarding timely payment  is strong.  
Those
issues determined to possess extremely strong safety characteristics are 
denoted
"A-1+."
 
   A-2  -- Issue's  capacity for  timely payment  is satisfactory.  However, 
the
relative degree of safety is not as high as for issues designated "A-1."
 
   Moody's commercial paper ratings  are opinions of the  ability of issuers  
to
repay  punctually  promissory obligations  not  having an  original  maturity 
in
excess of 9 months. The following  summarizes the two highest rating  
categories
used by Moody's for commercial paper:
 
   PRIME-1 -- Issuer or related supporting institutions are considered to have 
a
superior  capacity for repayment of short-term promissory obligations. 
Principal
repayment capacity will normally be evidenced by the following  
characteristics:
leading market positions in well-established industries; high rates of return 
on
funds employed; conservative capitalization structures with moderate reliance 
on
debt  and ample  asset protection;  broad margins  in earning  coverage of 
fixed
financial charges and high internal cash generation; and well-established 
access
to a range of financial markets and assured sources of alternate liquidity.
 
   PRIME-2 -- Issuer or related supporting institutions are considered to have 
a
strong capacity for  repayment of short-term  promissory obligations. This  
will
normally be evidenced by many of the characteristics cited above but to a 
lesser
degree.  Earnings trends and coverage ratios,  while sound, will be more 
subject
to variation. Capitalization  characteristics, while still  appropriate, may  
be
more affected by external conditions. Ample alternative liquidity is 
maintained.
 
   The  two  highest rating  categories of  Duff &  Phelps for  investment 
grade
commercial paper  are  "Duff  1" and  "Duff  2."  Duff &  Phelps  employs  
three
designations,  "Duff  1+," "Duff  1" and  "Duff 1-,"  within the  highest 
rating
category. The following  summarizes the  two highest rating  categories used  
by
Duff & Phelps for commercial paper:
 
   DUFF  1+ --  Debt possesses highest  certainty of  timely payment. Short-
term
liquidity, including  internal operating  factors and/or  access to  
alternative
sources  of  funds, is  outstanding,  and safety  is  just below  risk-free 
U.S.
Treasury short-term obligations.
 
   DUFF 1 --  Debt possesses very  high certainty of  timely payment.  
Liquidity
factors are excellent and supported by good fundamental protection factors. 
Risk
factors are minor.
 
   DUFF 1- -- Debt possesses high certainty of timely payment. Liquidity 
factors
are  strong and supported  by good fundamental  protection factors. Risk 
factors
are very small.
 
                                      A-1
<PAGE>
   DUFF 2 -- Debt possesses good certainty of timely payment. Liquidity  
factors
and  company fundamentals are sound. Although  ongoing funding needs may 
enlarge
total financing requirements, access  to capital markets  is good. Risk  
factors
are small.
 
   Fitch short-term ratings apply to debt obligations that are payable on 
demand
or  have  original maturities  of  up to  three  years. The  two  highest 
rating
categories of  Fitch  for short-term  obligations  are "F-1"  and  "F-2."  
Fitch
employs  two designations, "F-1+" and "F-1," within the highest rating 
category.
The following summarizes  the two highest  rating categories used  by Fitch  
for
short-term obligations:
 
   F-1+  --  Securities  possess  exceptionally  strong  credit  quality. 
Issues
assigned this rating are  regarded as having the  strongest degree of  
assurance
for timely payment.
 
   F-1  -- Securities possess  very strong credit  quality. Issues assigned 
this
rating reflect an assurance of timely payment only slightly less in degree  
than
issues rated "F-1+."
 
   F-2  --Securities possess  good credit  quality. Issues  carrying this 
rating
have a satisfactory degree  of assurance for timely  payment, but the margin  
of
safety is not as great as the "F-1+" and "F-1" categories.
 
   Fitch  may also use the symbol "LOC"  with its short-term ratings to 
indicate
that the rating is based upon a letter of credit issued by a commercial bank.
 
   Thomson BankWatch  commercial  paper  ratings assess  the  likelihood  of  
an
untimely  payment of principal or interest of debt having a maturity of one 
year
or less  which is  issued by  a bank  holding company  or an  entity within  
the
holding company structure. The following summarizes the two highest ratings 
used
by Thomson BankWatch:
 
   TBW-1  --  This  designation represents  Thomson  BankWatch's  highest 
rating
category and  indicates a  very high  degree of  likelihood that  principal  
and
interest will be paid on a timely basis.
 
   TBW-2 -- This designation indicates that while the degree of safety 
regarding
timely  payment  of principal  and interest  is strong,  the relative  degree 
of
safety is not as high as for issues rated "TBW-1."
 
   IBCA assesses  the investment  quality  of unsecured  debt with  an  
original
maturity  of less than  one year which  is issued by  bank holding companies 
and
their principal  bank subsidiaries.  The  highest rating  category of  IBCA  
for
short-term  debt is "A."  IBCA employs two designations,  "A1+" and "A1," 
within
the highest rating  category. The  following summarizes the  two highest  
rating
categories used by IBCA for short-term debt ratings:
 
   A1+  --  Obligations  are  supported  by  the  highest  capacity  for  
timely
repayment.
 
   A1 -- Obligations are supported by a strong capacity for timely repayment.
 
   A2 --  Obligations  are  supported  by a  satisfactory  capacity  for  
timely
repayment,  although  such capacity  may be  susceptible  to adverse  changes 
in
business, economic, or financial conditions.
 
                                      A-2
<PAGE>
MUNICIPAL LONG-TERM DEBT RATINGS
 
The following summarizes the two highest  ratings used by Standard & Poor's  
for
municipal long-term debt:
 
   AAA  -- This designation represents the highest rating assigned by Standard 
&
Poor's to a debt  obligation and indicates an  extremely strong capacity to  
pay
interest and repay principal.
 
   AA  -- Debt is considered to have a  very strong capacity to pay interest 
and
repay principal and differs from AAA issues only in small degree.
 
   PLUS (+) OR MINUS (-) -- The rating  of "AA" may be modified by the  
addition
of a plus or minus sign to show relative standing within this rating category.
 
   The  following  summarizes  the  two  highest  ratings  used  by  Moody's 
for
municipal long-term debt:
 
   AAA -- Bonds are judged  to be of the best  quality. They carry the  
smallest
degree of investment risk and are generally referred to as "gilt edge." 
Interest
payments  are protected  by a  large or  by an  exceptionally stable  margin 
and
principal is secure. While the various protective elements are likely to 
change,
such changes as can be visualized are most unlikely to impair the  
fundamentally
strong position of such issues.
 
   AA  -- Bonds are judged to be of high quality by all standards. Together 
with
the "Aaa" group they comprise what are generally known as high grade bonds. 
They
are rated lower than the best bonds because margins of protection may not be  
as
large  as in "Aaa"  securities or fluctuation  of protective elements  may be 
of
greater amplitude  or  there  may  be other  elements  present  which  make  
the
long-term risks appear somewhat larger than in "Aaa" securities.
 
   Moody's  applies numerical modifiers 1, 2  and 3 in generic classification 
of
"Aa" in its bond rating system. The modifier 1 indicates that the security 
ranks
in the higher end  of its generic  rating category; the  modifier 2 indicates  
a
mid-range  ranking; and  the modifier  3 indicates that  the issue  ranks at 
the
lower end of its generic rating category.
 
   The following summarizes the  two highest ratings used  by Duff & Phelps  
for
municipal long-term debt:
 
   AAA  -- Debt  is considered  to be  of the  highest credit  quality. The 
risk
factors are  negligible,  being  only  slightly more  than  for  risk-free  
U.S.
Treasury debt.
 
   AA  --  Debt is  considered of  high credit  quality. Protection  factors 
are
strong. Risk  is modest  but may  vary slightly  from time  to time  because  
of
economic conditions.
 
   To  provide more detailed indications of  credit quality, the "AA" rating 
may
be modified by the  addition of a plus  (+) or minus (-)  sign to show  
relative
standing within this rating category.
 
   CON.  (---) -- Bonds  for which the  security depends upon  the completion 
of
some act or the fulfillment of some condition are rated conditionally. These 
are
bonds secured by (a)  earnings of projects under  construction, (b) earnings  
of
projects  unseasoned  in  operation  experience, (c)  rentals  which  begin 
when
facilities are completed, or (d) payments to which some other limiting 
condition
attaches. Parenthetical rating denotes  probable credit stature upon  
completion
of construction or elimination of basis of condition.
 
                                      A-3
<PAGE>
   The  following summarizes the two highest ratings used by Fitch for 
municipal
bonds:
 
   AAA -- Bonds  considered to  be investment grade  and of  the highest  
credit
quality.  The obligor  has an exceptionally  strong ability to  pay interest 
and
repay principal,  which is  unlikely to  be affected  by reasonably  
foreseeable
events.
 
   AA  --  Bonds considered  to  be investment  grade  and of  very  high 
credit
quality. The  obligor's ability  to pay  interest and  repay principal  is  
very
strong,  although not quite as strong as  bonds rated "AAA." Because bonds 
rated
in the "AAA" and "AA" categories are not significantly vulnerable to 
foreseeable
future developments, short-term debt of these issuers is generally rated "F-
1+."
 
   To provide more detailed indications of  credit quality, the Fitch rating  
of
"AA"  may be modified by  the addition of a  plus (+) or minus  (-) sign to 
show
relative standing within this rating category.
 
   Thomson BankWatch  assesses  the  likelihood  of  an  untimely  repayment  
of
principal  or interest over the term to maturity of long-term debt and 
preferred
stock which are issued by United  States commercial banks, thrifts and  non-
bank
banks; non-United States banks; and broker-dealers. The following summarizes 
the
two  highest  rating categories  used by  Thomson  BankWatch for  long-term 
debt
ratings:
 
   AAA -- This designation represents  the highest category assigned by  
Thomson
BankWatch  to long-term debt  and indicates that the  ability to repay 
principal
and interest on a timely basis is very high.
 
   AA -- This designation  indicates a superior ability  to repay principal  
and
interest  on a timely basis with limited incremental risk versus issues rated 
in
the highest category.
 
   PLUS (+)  OR MINUS  (-) --  The  ratings may  include a  plus or  minus  
sign
designation  which indicates where  within the respective  category the issue 
is
placed.
 
   IBCA assesses  the investment  quality  of unsecured  debt with  an  
original
maturity  of more than  one year which  is issued by  bank holding companies 
and
their principal  bank subsidiaries.  The following  summarizes the  two  
highest
rating categories used by IBCA for long-term debt ratings:
 
   AAA  -- Obligations for  which there is the  lowest expectation of 
investment
risk. Capacity for  timely repayment  of principal and  interest is  
substantial
such  that adverse  changes in  business, economic  or financial  conditions 
are
unlikely to increase investment risk significantly.
 
   AA -- Obligations  for which there  is a very  low expectation of  
investment
risk.  Capacity for timely  repayment of principal  and interest is 
substantial.
Adverse changes  in  business, economic  or  financial conditions  may  
increase
investment risk albeit not very significantly.
 
   IBCA  may append  a rating of  plus (+)  or minus (-)  to a  rating to 
denote
relative status within these rating categories.
 
                                      A-4
<PAGE>
MUNICIPAL NOTE RATINGS
 
A Standard &  Poor's rating reflects  the liquidity concerns  and market  
access
risks  unique to notes due in three  years or less. The following summarizes 
the
two highest  rating  categories  used  by  Standard  &  Poor's  Corporation  
for
municipal notes:
 
   SP-1  -- The issuers of  these municipal notes exhibit  very strong or 
strong
capacity to  pay principal  and  interest. Those  issues determined  to  
possess
overwhelming safety characteristics are given a plus (+) designation.
 
   SP-2 -- The issuers of these municipal notes exhibit satisfactory capacity 
to
pay principal and interest.
 
   Moody's  ratings for state and municipal notes and other short-term loans 
are
designated Moody's Investment Grade ("MIG") and variable rate demand 
obligations
are  designated  Variable  Moody's  Investment  Grade  ("VMIG").  Such   
ratings
recognize the differences between short-term credit risk and long-term risk. 
The
following  summarizes the two highest ratings used by Moody's Investors 
Service,
Inc. for short-term notes:
 
   MIG-1/VMIG-1 --  Loans bearing  this  designation are  of the  best  
quality,
enjoying strong protection by established cash flows, superior liquidity 
support
or demonstrated broad-based access to the market for refinancing.
 
   MIG-2/VMIG-2  -- Loans  bearing this  designation are  of high  quality, 
with
margins of protection ample although not so large as in the preceding group.
 
   Duff & Phelps and Fitch use the short-term ratings described under 
Commercial
Paper Ratings for municipal notes.
 
                                      A-5
[/TEXT]
[/DOCUMENT]


<PAGE>
   
LEHMAN BROTHERS INSTITUTIONAL FUNDS GROUP TRUST
NEW YORK MUNICIPAL MONEY MARKET FUND
    
 
<TABLE>
<S>                        <C>
  STATEMENT OF ADDITIONAL
INFORMATION
</TABLE>
 
   
                                                                     MAY _, 
1994
    
 
   
   This  Statement of Additional Information is  meant to be read in 
conjunction
with the Prospectus  for the  New York  Municipal Money  Market Fund  
portfolio,
dated  May  _,  1994  as amended  or  supplemented  from time  to  time,  and 
is
incorporated by  reference in  its entirety  into the  Prospectus. Because  
this
Statement of Additional Information is not itself a prospectus, no investment 
in
shares  of the  New York  Municipal Money Market  Fund portfolio  should be 
made
solely upon  the information  contained  herein. Copies  of the  Prospectus  
for
shares  may be obtained by calling  Lehman Brothers Inc. ("Lehman Brothers"), 
at
1-800-368-5556. Capitalized  terms used  but not  defined herein  have the  
same
meanings as in the Prospectus.
    
TABLE OF CONTENTS
 
   
<TABLE>
<CAPTION>
                                                                                         
Page
                                                                                       
---------
<S>                                                                                    
<C>
The 
Trust.........................................................................
...          2
Investment Objective and 
Policies....................................................          2
Municipal 
Obligations................................................................          
7
Additional Purchase and Redemption 
Information.......................................         19
Management of the 
Fund...............................................................         21
Additional Information Concerning 
Taxes..............................................         26
Dividends.....................................................................
.......         28
Additional Yield 
Information.........................................................         
28
Additional Description Concerning 
Shares.............................................         29
Counsel.......................................................................
.......         30
Auditors......................................................................
.......         30
Financial 
Statements.................................................................         
30
Miscellaneous.................................................................
.......         30
Appendix......................................................................
.......        A-1
</TABLE>
    
<PAGE>
THE TRUST
 
   
Lehman  Brothers Institutional  Funds Group  Trust (the  "Trust") is  a no-
load,
open-end investment  company. The  Trust currently  includes a  family of  
money
market and non-money market portfolios, one of which is New York Municipal 
Money
Market  Fund  (the "Fund").  The  Fund is  currently  authorized to  offer 
three
classes of shares.  Each class  represents an equal,  PRO RATA  interest in  
the
Fund. Each share accrues daily dividends in the same manner, except that Class 
B
and  Class  C  Shares  bear fees  payable  by  the Fund  to  Lehman  Brothers 
or
institutional investors for services  they provide to  the beneficial owners  
of
such shares.
    
 
   
   THIS  STATEMENT OF  ADDITIONAL INFORMATION  AND THE  FUND'S PROSPECTUS 
RELATE
PRIMARILY TO THE FUND AND DESCRIBE  ONLY THE INVESTMENT OBJECTIVE AND  
POLICIES,
OPERATIONS,  CONTRACTS AND OTHER MATTERS RELATING TO THE FUND. INVESTORS 
WISHING
TO OBTAIN SIMILAR INFORMATION REGARDING THE TRUST'S OTHER PORTFOLIOS MAY  
OBTAIN
SEPARATE   PROSPECTUSES  DESCRIBING  THEM  BY   CONTACTING  LEHMAN  BROTHERS  
AT
1-800-368-5556.
    
 
INVESTMENT OBJECTIVE AND POLICIES
 
As stated in the Fund's Prospectus, the  investment objective of the Fund is  
to
provide as high a level of current income exempt from federal income tax and, 
to
the  extent possible,  from New  York State  and New  York City  personal 
income
taxes, as is consistent with the preservation of capital and relative  
stability
of  principal. The following  policies supplement the  description of the 
Fund's
investment objective and policies in the Prospectus.
 
   
   The  Fund  is  managed  to  provide  stability  of  capital  while  
achieving
competitive  yields. The investment adviser  intends to follow a value-
oriented,
research-driven and risk-averse investment strategy, engaging in a full range 
of
economic,  strategic,  credit  and   market-specific  analyses  in   
researching
potential investment opportunities.
    
 
   
PORTFOLIO TRANSACTIONS
    
   
Subject  to the  general control  of the  Trust's Board  of Trustees  and 
Lehman
Brothers Global Asset Management Inc. ("LBGAM"), the Fund's investment  
adviser,
is  responsible for, makes decisions  with respect to and  places orders for 
all
purchases and sales  of portfolio  securities. Purchases  are usually  
principal
transactions without brokerage commissions. Purchases, if any, from 
underwriters
may include a commission or concession paid by the issuer to the underwriter 
and
purchases  from dealers serving as market markers may include the spread 
between
the bid and asked prices. In making portfolio investments, LBGAM seeks to 
obtain
the best net price  and the most  favorable execution of  orders. To the  
extent
that  the execution and  price offered by  more than one  dealer are 
comparable,
LBGAM may, in its discretion,  effect transactions in portfolio securities  
with
dealers who provide the Trust with research advice or other services.
    
 
   
   Investment  decisions for the Fund are  made independently from those for 
the
Trust's other  portfolios or  other investment  company portfolios  or  
accounts
advised  by LBGAM.  Such other investment  company portfolios may  invest in 
the
same securities as the Fund.  When purchases or sales  of the same security  
are
made  at substantially the same time on  behalf of such other investment 
company
portfolios, transactions are  averaged as  to price,  and available  
investments
allocated    as    to   amount,    in    a   manner    which    LBGAM   
believes
    
 
                                       2
<PAGE>
   
to be equitable  to each investment  company portfolio, including  the Fund.  
In
some instances, this investment procedure may adversely affect the price paid 
or
received  by the Fund or the size of  the position obtained for the Fund. To 
the
extent permitted  by law,  LBGAM may  aggregate  the securities  to be  sold  
or
purchased  for  the Fund  with  those to  be sold  or  purchased for  such 
other
investment companies in order to obtain best execution.
    
 
   
   Portfolio securities will not be purchased from or sold to and the Fund  
will
not  enter  into  repurchase  agreements  with  Lehman  Brothers,  LBGAM  or 
any
affiliated person of  any of them  (as such  term is defined  in the  
Investment
Company Act of 1940, as amended (the "1940 Act")) except to the extent 
permitted
by  the Securities and  Exchange Commission ("SEC"). In  addition, the Fund 
will
not purchase Municipal Obligations during  the existence of any underwriting  
or
selling group relating thereto of which Lehman Brothers or any affiliate 
thereof
is  a  member,  except  to  the  extent  permitted  by  the  SEC.  Under 
certain
circumstances, the Fund may be at a disadvantage because of these limitations 
in
comparison with  other  investment  company  portfolios  which  have  a  
similar
investment  objective but are not subject to such limitations. Furthermore, 
with
respect to such transactions,  securities and deposits, the  Fund will not  
give
preference  to Service Organizations  with whom the  Fund enters into 
agreements
relating to Class B or Class C  shares. (See the Prospectus, "Management of  
the
Fund -- Service Organizations.")
    
 
   
   The  Fund  may  participate, if  and  when  practicable, in  bidding  for 
the
purchase of  Municipal Obligations  directly from  an issuer  in order  to  
take
advantage  of the lower purchase price available to members of such a group. 
The
Fund will  engage  in this  practice,  however, only  when  LBGAM, in  its  
sole
discretion, believes such practice to be otherwise in the Fund's interest.
    
 
   
   The  Fund does  not intend  to seek  profits through  short-term trading. 
The
Fund's annual  portfolio  turnover  will  be  relatively  high  because  of  
the
short-term  nature  of  the instruments  in  which  it invests,  but  the 
Fund's
portfolio turnover is not expected to have a material effect on its net  
income.
The  Fund's portfolio turnover  is expected to be  zero for regulatory 
reporting
purposes.
    
 
ADDITIONAL INFORMATION ON INVESTMENT PRACTICES
 
    VARIABLE AND FLOATING RATE INSTRUMENTS.  Municipal Obligations purchased  
by
the  Fund may include variable and  floating rate instruments, which provide 
for
adjustments in the interest rate on certain reset dates or whenever a  
specified
interest   rate  index   changes,  respectively.  Variable   and  floating  
rate
instruments are  subject  to  the  credit quality  standards  described  in  
the
Prospectus.  In some cases the  Fund may require that  the obligation to pay 
the
principal of  the  instrument  be backed  by  a  letter or  line  of  credit  
or
guarantee.  Such instruments may  carry stated maturities in  excess of 397 
days
provided that the maturity-shortening provisions  stated in Rule 2a-7 under  
the
1940  Act are satisfied. Although a  particular variable or floating rate 
demand
instrument may not be actively traded in a secondary market, in some cases,  
the
Fund may be entitled to principal on demand and may be able to resell such 
notes
in the dealer market.
 
   Variable  and  floating rate  demand instruments  held by  the Fund  may 
have
maturities of more  than 13 months  provided: (i)  the Fund is  entitled to  
the
payment  of principal at any time or during specified intervals not exceeding 
13
months, subject to notice of no more than 30 days, and (ii) the rate of 
interest
on such  instruments is  adjusted (based  upon a  pre-selected market  
sensitive
index  such as the prime rate of  a major commercial bank) at periodic 
intervals
not exceeding 13 months.  In determining the  Fund's average weighted  
portfolio
maturity  and  whether  a variable  or  floating  rate demand  instrument  has 
a
remaining
 
                                       3
<PAGE>
   
maturity of 13 months or less, the maturity of each instrument will be  
computed
in  accordance with guidelines established by the SEC. In determining whether 
an
unrated variable or floating rate demand instrument is of comparable quality  
at
the  time  of  purchase to  instruments  with  minimal credit  risk,  the 
Fund's
investment adviser  will  follow guidelines  adopted  by the  Trust's  Board  
of
Trustees.
    
 
   
    TENDER  OPTION BONDS.   The Fund may  invest up to  10% of the  value of 
its
assets in tender option  bonds. The Fund will  not purchase tender option  
bonds
unless  (a) the  demand feature  applicable thereto  is exercisable  by the 
Fund
within 13 months of the date of such purchase upon no more than 30 days'  
notice
and  thereafter is exercisable by the Fund no less frequently than annually 
upon
no more  than 30  days' notice  and, (b)  at the  time of  such purchase,  
LBGAM
reasonably  expects that (i) based upon its assessment of current and 
historical
interest rate trends, prevailing short-term tax-exempt rates will not exceed 
the
stated interest rate on the underlying Municipal Obligations at the time of  
the
next  tender fee adjustment, and (ii)  the circumstances which might entitle 
the
grantor of a tender option to terminate the tender option would not occur  
prior
to  the  time  of  the next  tender  opportunity.  At the  time  of  each 
tender
opportunity, the Fund will exercise the tender option with respect to any 
tender
option bonds unless LBGAM reasonably expects that, (a) based upon its 
assessment
of current and historical interest rate trends, prevailing short-term tax-
exempt
rates will  not exceed  the stated  interest rate  on the  underlying  
Municipal
Obligations  at  the  time  of  the next  tender  fee  adjustment,  and  (b) 
the
circumstances which might entitle  the grantor of a  tender option to  
terminate
the  tender  option  would  not occur  prior  to  the time  of  the  next 
tender
opportunity. The Fund will  exercise the tender feature  with respect to  
tender
option bonds, or otherwise dispose of its tender option bonds, prior to the 
time
the  tender option is scheduled to expire pursuant to the terms of the 
agreement
under which the tender  option is granted. The  Fund otherwise will comply  
with
the  provisions of Rule 2a-7 under the  1940 Act in connection with the 
purchase
of  tender   option  bonds,   including,  without   limitation,  the   
requisite
determination  by the Board of Trustees that the tender option bonds in 
question
meet the quality standards described in Rule 2a-7. In the event of a default  
of
the  Municipal Obligation underlying a tender option bond, or the termination 
of
the tender option agreement,  the Fund would  look to the  maturity date of  
the
underlying  security  for purposes  of  compliance with  Rule  2a-7 and,  if 
its
remaining maturity was greater than 13 months, the Fund would sell the  
security
as soon as would be practicable. The Fund will purchase tender option bonds 
only
when  it is  satisfied that  (a) the  custodial and  tender option 
arrangements,
including the fee payment arrangements, will not adversely affect the tax-
exempt
status of the  underlying Municipal Obligations  and (b) payment  of any  
tender
fees  will not have the effect of creating taxable income for the Fund. Based 
on
the tender option bond arrangement, the Fund expects to value the tender  
option
bond  at par; however, the  value of the instrument  will be monitored to 
assure
that it is valued at fair value.
    
 
    WHEN-ISSUED SECURITIES.  As stated in the Prospectus, the Fund may  
purchase
Municipal  Obligations on a  "when-issued" basis (I.E.,  for delivery beyond 
the
normal settlement date at  a stated price  and yield). When  the Fund agrees  
to
purchase  when-issued securities,  its custodian will  set aside  cash or 
liquid
portfolio securities  equal  to the  amount  of  the commitment  in  a  
separate
account.  Normally, the custodian will set aside portfolio securities to 
satisfy
a purchase commitment, and in such a case the Fund may be required  
subsequently
to  place additional assets in the separate  account in order to ensure that 
the
value of the account remains  equal to the amount  of the Fund's commitment.  
It
may  be expected that the  Fund's net assets will  fluctuate to a greater 
degree
when it sets aside portfolio securities to cover such purchase commitments  
than
when  it sets aside cash. Because the Fund  will set aside cash or liquid 
assets
to satisfy  its  purchase  commitments  in  the  manner  described,  the  
Fund's
liquidity and ability to manage its portfolio
 
                                       4
<PAGE>
might  be  affected  in  the  event  its  commitments  to  purchase  when-
issued
securities ever exceeded 25% of the value  of its assets. When the Fund  
engages
in  when-issued transactions, it  relies on the seller  to consummate the 
trade.
Failure of the  seller to do  so may result  in the Fund's  incurring a loss  
or
missing an opportunity to obtain a price considered to be advantageous. The 
Fund
does  not intend to purchase when-issued securities for speculative purposes 
but
only in furtherance of its investment objective. The Fund reserves the right  
to
sell the securities before the settlement date if it is deemed advisable.
 
    STAND-BY  COMMITMENTS.   The  Fund may  acquire "stand-by  commitments" 
with
respect to  Municipal  Obligations  held  in its  portfolio.  Under  a  stand-
by
commitment,  a  dealer  agrees  to purchase,  at  the  Fund's  option, 
specified
Municipal Obligations at  their amortized cost  value to the  Fund plus  
accrued
interest,  if  any.  (Stand-by commitments  acquired  by  the Fund  may  also 
be
referred to as "put" options.) Stand-by commitments may be sold, transferred  
or
assigned only with the underlying instruments.
 
   The  Fund  expects  that  stand-by commitments  will  generally  be 
available
without the  payment  of  any  direct or  indirect  consideration.  However,  
if
necessary  or  advisable, the  Fund  may pay  for  a stand-by  commitment 
either
separately in cash or  by paying a higher  price for portfolio securities  
which
are  acquired subject  to the  commitment (thus  reducing the  yield to 
maturity
otherwise available for the  same securities). The total  amount paid in  
either
manner  for outstanding stand-by commitments held in the Fund's portfolio is 
not
expected to exceed 1/2 of 1% of the value of the Fund's total assets  
calculated
immediately after each stand-by commitment is acquired.
 
   
   The  Fund intends to enter into stand-by commitments only with dealers, 
banks
and broker-dealers  which, in  the opinion  of the  investment adviser,  
present
minimal  credit risks.  In evaluating  the creditworthiness  of the  issuer of 
a
stand-by  commitment,  the  investment  adviser  will  review  periodically  
the
issuer's  assets, liabilities,  contingent claims  and other  relevant 
financial
information.
    
 
   The Fund would  acquire stand-by commitments  solely to facilitate  
portfolio
liquidity  and does  not intend  to exercise  its rights  thereunder for 
trading
purposes. Stand-by commitments acquired by the  Fund would be valued at zero  
in
determining  net asset value. Where the  Fund paid any consideration directly 
or
indirectly for a stand-by commitment, its cost would be reflected as  
unrealized
depreciation for the period during which the commitment was held by the Fund.
 
    PARTICIPATIONS.     The  Fund  may   purchase  from  financial  
institutions
tax-exempt participation  interests in  Municipal Obligations.  A  
participation
interest gives the Fund an undivided interest in the Municipal Obligation in 
the
proportion  that the Fund's participation interest  bears to the total amount 
of
the Municipal Obligation. These instruments may have floating or variable  
rates
of  interest. If the participation interest is  unrated, it will be backed by 
an
irrevocable letter of credit or  guarantee of a bank  that the Trust's Board  
of
Trustees   has  determined  meets  certain  quality  standards  or  the  
payment
obligation  otherwise  will  be  collateralized  by  obligations  of  the   
U.S.
Government   and   its   agencies   and   instrumentalities   ("U.S.  
Government
securities").  The  Fund  will   have  the  right,   with  respect  to   
certain
participation  interests,  to demand  payment, on  a  specified number  of 
days'
notice, for all or any part of the Fund's interest in the Municipal 
Obligations,
plus accrued interest. The Fund will invest no more than 5% of its total  
assets
in participation interests.
 
    ILLIQUID SECURITIES.  The Fund may not invest more than 10% of its total 
net
assets  in illiquid securities, including securities that are illiquid by 
virtue
of  the  absence  of  a  readily  available  market  or  legal  or   
contractual
restrictions  on resale. Securities that  have legal or contractual 
restrictions
on resale but have a
 
                                       5
<PAGE>
   
readily available  market  are not  considered  illiquid for  purposes  of  
this
limitation.  The Fund's investment adviser will  monitor on an ongoing basis 
the
liquidity of such restricted  securities under the supervision  of the Board  
of
Trustees.
    
 
   
   The  SEC has adopted Rule  144A under the Securities  Act of 1933, as 
amended
(the "1933 Act")  which allows for  a broader institutional  trading market  
for
securities  otherwise subject  to restriction on  resale to  the general 
public.
Rule 144A establishes a "safe harbor" from the registration requirements of  
the
1933  Act for resales  of certain securities  to qualified institutional 
buyers.
The Fund's investment adviser anticipates that the market for certain 
restricted
securities such as institutional municipal  securities will expand further as  
a
result  of  this regulation  and the  development of  automated systems  for 
the
trading, clearance and  settlement of  unregistered securities  of domestic  
and
foreign issuers, such as the PORTAL system sponsored by the National 
Association
of Securities Dealers.
    
 
   
   The  investment adviser will  monitor the liquidity  of restricted 
securities
under the supervision of the Board of Trustees. In reaching liquidity  
decisions
with  respect  to  Rule  144A securities,  the  Fund's  investment  adviser 
will
consider, INTER ALIA, the  following factors: (1) the  unregistered nature of  
a
Rule  144A security;  (2) the  frequency of  trades and  quotes for  a Rule 
144A
security; (3) the number of  dealers willing to purchase  or sell the Rule  
144A
security  and the number of other  potential purchasers; (4) dealer 
undertakings
to make a market in the Rule 144A security; (5) the trading markets for the 
Rule
144A security; and (6) the  nature of the Rule 144A  security and the nature  
of
marketplace  trades  (including, the  time needed  to dispose  of the  Rule 
144A
security, methods of soliciting offers and mechanics of transfer).
    
 
   
   The  Appendix  to  this  Statement  of  Additional  Information  contains   
a
description  of  the  relevant  rating  symbols  used  by  nationally 
recognized
statistical rating organizations ("NRSROs")  for Municipal Obligations that  
may
be purchased by the Fund.
    
 
   
INVESTMENT LIMITATIONS
    
 
The  Fund's Prospectus sets forth certain investment limitations that may not 
be
changed without the affirmative vote of the holders of a majority of the  
Fund's
outstanding   shares  (as  defined   below  under  "Miscellaneous").  
Investment
limitations numbered 1  through 6  may not  be changed  without such  a vote  
of
shareholders;  investment limitations 7 through  12 may be changed  by a vote 
of
the Trust's Board of Trustees at any time.
 
   The Fund may not:
 
    1. Borrow money,  except  from banks  for  temporary purposes  and  then  
in
       amounts  not exceeding 10% of the value of the Fund's total assets at 
the
   time of such borrowing; or mortgage, pledge or hypothecate any assets  
except
   in  connection with any  such borrowing and  in amounts not  in excess of 
the
   lesser of the dollar amounts borrowed or 10% of the value of the Fund's 
total
   assets at the time of such borrowing. Additional investments will not be 
made
   when borrowings exceed 5% of the Fund's assets.
 
    2. Make loans, except that the Fund may purchase or hold debt instruments 
in
       accordance with its investment objective and policies.
 
    3. Act as an underwriter  of securities, except insofar  as the Fund may  
be
       deemed  an  underwriter  under  applicable  securities  laws  in  
selling
   portfolio securities.
 
                                       6
<PAGE>
    4. Purchase or  sell  real  estate  or  real  estate  limited  
partnerships,
       provided that the Fund may purchase securities of issuers which invest 
in
   real estate or interests therein.
 
    5. Purchase  or sell commodities  or commodity contracts,  or invest in 
oil,
       gas or mineral exploration or development programs or in mineral 
leases.
 
    6. Purchase any securities which would cause 25% or more of the value of 
its
       total assets at the time of purchase to be invested in the securities  
of
   issuers  conducting their principal business activities in the same 
industry,
   provided that there  is no  limitation with  respect to  investments in  
U.S.
   Government securities.
 
    7. Knowingly  invest more  than 10%  of the  value of  the Fund's  assets 
in
       securities  that  may  be  illiquid  because  of  legal  or   
contractual
   restrictions on resale or securities for which there are no readily 
available
   market quotations.
 
    8. Purchase securities on margin, make short sales of securities or 
maintain
       a short position.
 
    9. Write or sell puts, calls, straddles, spreads or combinations thereof.
 
   10. Invest in securities if as a result the Fund would then have more than 
5%
       of  its total assets in  securities of companies (including 
predecessors)
   with less than three years of continuous operation.
 
   11. Purchase securities  of other  investment companies  except as  
permitted
       under  the  1940  Act  or in  connection  with  a  merger, 
consolidation,
   acquisition or reorganization.
 
   12. Invest in warrants.
 
   In addition, without the affirmative vote of  the holders of a majority of  
a
Fund's  outstanding shares, such Fund may not  change its policy of investing 
at
least 80% of  its total assets  (except during temporary  defensive periods)  
in
Municipal Obligations.
 
MUNICIPAL OBLIGATIONS
 
IN GENERAL
 
   
Municipal  Obligations include debt obligations  issued by governmental 
entities
to obtain funds  for various public  purposes, including the  construction of  
a
wide  range of public facilities, the  refunding of outstanding obligations, 
the
payment of  general operating  expenses and  the extension  of loans  to  
public
institutions  and facilities.  Private activity bonds  that are issued  by or 
on
behalf of public  authorities to finance  various privately-operated  
facilities
are  included within the term Municipal Obligations if the interest paid 
thereon
is (subject to the federal alternative minimum tax) exempt from regular  
federal
income  tax. Opinions relating  to the validity of  Municipal Obligations and 
to
the exemption of  interest thereon  from federal  income taxes  are rendered  
by
counsel  to the issuers or bond counsel to the respective issuing authorities 
at
the time of issuance.  Neither the Fund nor  the investment adviser will  
review
independently  the underlying proceedings relating  to the issuance of 
Municipal
Obligations or the bases for such opinions.
    
 
   The Fund may hold tax-exempt derivatives which  may be in the form of  
tender
option  bonds,  participations,  beneficial interests  in  a  trust, 
partnership
interests or other forms. A number  of different structures have been used.  
For
example, interests in long-term fixed-rate Municipal Obligations, held by a 
bank
as  trustee  or custodian,  are  coupled with  tender  option, demand  and 
other
features when the tax-exempt
 
                                       7
<PAGE>
   
derivatives are  created. Together,  these features  entitle the  holder of  
the
interest to tender (or put) the underlying Municipal Obligation to a third 
party
at  periodic  intervals and  to receive  the principal  amount thereof.  In 
some
cases, Municipal Obligations  are represented by  custodial receipts  
evidencing
rights  to  receive specific  future interest  payments, principal  payments, 
or
both, on the underlying municipal securities  held by the custodian. Under  
such
arrangements,  the holder of the custodial receipt  has the option to tender 
the
underlying municipal securities at its face value to the sponsor (usually a 
bank
or broker/dealer or other  financial institution), which  is paid periodic  
fees
equal  to the difference between the bond's  fixed coupon rate and the rate 
that
would cause the bond,  coupled with the  tender option, to trade  at par on  
the
date  of a rate  adjustment. The Fund  may hold tax-exempt  derivatives, such 
as
participation interests and custodial receipts, for Municipal Obligations  
which
give  the  holder the  right  to receive  payment  of principal  subject  to 
the
conditions described  above.  The Internal  Revenue  Service has  not  ruled  
on
whether  the  interest  received  on  tax-exempt  derivatives  in  the  form  
of
participation interests or  custodial receipts is  tax-exempt, and  
accordingly,
purchases  of any such interests or receipts are based on the opinion of 
counsel
to the  sponsors  of  such  derivative securities.  Neither  the  Fund  nor  
its
investment  adviser will independently review the underlying proceedings 
related
to the creation of any tax-exempt derivatives or the bases for such opinions.
    
 
   
   As described in the Fund's  Prospectus, the two principal classifications  
of
Municipal  Obligations consist of "general obligation" and "revenue" issues, 
and
the Fund's portfolio may include  "moral obligation" issues, which are  
normally
issued  by special purpose authorities. There  are, of course, variations in 
the
quality of Municipal  Obligations, both within  a particular classification  
and
between  classifications, and the yields on  Municipal Obligations depend upon 
a
variety of factors,  including general  money market  conditions, the  
financial
condition  of the issuer,  general conditions of the  municipal bond market, 
the
size of a particular offering, the maturity of the obligation and the rating  
of
the  issue.  The ratings  of  statistical rating  organizations  represent 
their
opinions as to the  quality of Municipal Obligations.  It should be  
emphasized,
however, that ratings are general and are not absolute standards of quality, 
and
Municipal  Obligations with the same maturity, interest rate and rating may 
have
different yields while Municipal Obligations  of the same maturity and  
interest
rate  with different ratings may have the same yield. Subsequent to its 
purchase
by the Fund,  an issue of  Municipal Obligations may  cease to be  rated or  
its
rating  may be  reduced below  the minimum rating  required for  purchase by 
the
Fund. The investment adviser will consider such an event in determining  
whether
the Fund should continue to hold the obligation.
    
 
   An  issuer's obligations under  its Municipal Obligations  are subject to 
the
provisions of bankruptcy,  insolvency and  other laws affecting  the rights  
and
remedies  of creditors, such as  the Federal Bankruptcy Code,  and laws, if 
any,
which may be  enacted by federal  or state legislatures  extending the time  
for
payment  of principal or  interest, or both, or  imposing other constraints 
upon
enforcement of such obligations  or upon the ability  of municipalities to  
levy
taxes. The power or ability of an issuer to meet its obligations for the 
payment
of  interest  on and  principal of  its Municipal  Obligations may  be 
adversely
affected by litigation or other conditions.
 
   Among other types of Municipal Obligations, the Fund may purchase  short-
term
General  Obligation  Notes,  Tax Anticipation  Notes,  Bond  Anticipation 
Notes,
Revenue Anticipation Notes, Tax-Exempt Commercial Paper, Construction Loan 
Notes
and other  forms  of  short-term  loans. Such  instruments  are  issued  with  
a
short-term maturity in anticipation of the receipt of tax funds, the proceeds 
of
bond placements or
 
                                       8
<PAGE>
other  revenues. In addition, the  Fund may invest in  other types of tax-
exempt
instruments, including general obligation  and private activity bonds,  
provided
they have remaining maturities of 13 months or less at the time of purchase.
 
SPECIAL CONSIDERATIONS RELATING TO NEW YORK MUNICIPAL OBLIGATIONS
 
   
    STATE  ECONOMY.  New  York State (the  "State") is the  second most 
populous
state in the  nation and has  a relatively  high level of  personal wealth.  
The
State's  economy is  diverse with  a comparatively  large share  of the 
nation's
finance, insurance, transportation, communications and services employment,  
and
a  comparatively small  share of the  nation's farming and  mining activity. 
The
State has a declining proportion of its workforce engaged in manufacturing,  
and
an  increasing  proportion engaged  in service  industries.  New York  City 
(the
"City"), which is  the most populous  city in the  State and nation  and is  
the
center of the nation's largest metropolitan area, accounts for approximately 
41%
of both the State's population and personal income.
    
 
   
   The  State has historically been one of  the wealthiest states in the 
nation.
For decades, however,  the State  has grown  more slowly  than the  nation as  
a
whole, gradually eroding its relative economic affluence. The recession has 
been
more  severe in the State, owing to  a significant retrenchment in the 
financial
services industry, cutbacks in  defense spending, and  an overbuilt real  
estate
market.  There can be  no assurance that  the State economy  will not 
experience
worse-than-predicted results  in  the 1993-94  and  1994-95 fiscal  years,  
with
corresponding  material  and  adverse  effects  on  the  State's  projections 
of
receipts and disbursements.
    
 
   
   The unemployment rate  in the  State dipped below  the national  rate in  
the
second  half of 1981 and remained lower  until 1991. The total employment 
growth
rate in the State has  been below the national average  since 1984, and in  
1992
the  unemployment rate  rose to 8.5%.  State per capita  personal income 
remains
above the national average. State per capita income for 1992 was $23,534,  
which
is  18.5% above the 1992 national average of $20,114. Between 1970 and 1980, 
the
percentage by which the State's per capita income exceeded that of the  
national
average fell from 19.8% to 8.1%, and the State dropped from fifth to eleventh 
in
the  nation in terms of per capita income. However, since 1980, the State's 
rate
of per capita income growth  was greater than that  of the nation generally  
and
the  State's rank  improved to fourth  in 1990  and remained fourth  in 1991 
and
1992. Some analysts believe that  the decline in jobs in  both the City and  
New
York State is the result of State and local taxation, which is among the 
highest
in  the nation,  and which  may cause  corporations to  locate outside  New 
York
State. The current high level of taxes  limit the ability of New York State  
and
the City to impose higher taxes in the event of future difficulties.
    
 
   
    STATE BUDGET.  The State Constitution requires the Governor to submit to 
the
Legislature  a  balanced  Executive Budget  which  contains a  complete  plan 
of
expenditures for the ensuing fiscal year  and all moneys and revenues  
estimated
to   be  available  therefor,  accompanied  by  bills  containing  all  
proposed
appropriations or reappropriations and any  new or modified revenue measures  
to
be  enacted in connection with the Executive Budget. The entire plan 
constitutes
the proposed State financial plan for that fiscal year. The Governor submits  
to
the  Legislature, on  at least  a quarterly  basis, reports  of actual 
receipts,
revenues, disbursements,  expenditures,  tax  refunds  and  reimbursements,  
and
repayment  of advances in form suitable  for comparison with the State 
financial
plan, together with explanations of deviations from the State financial plan. 
At
such time,  the Governor  is required  to  submit any  amendments to  the  
State
financial plan necessitated by such deviations.
    
 
                                       9
<PAGE>
   
   The Governor released the recommended Executive Budget for the 1994-95 
fiscal
year on January 18, 1994. The Recommended 1994-95 State Financial Plan 
projected
a  balanced General Fund, with receipts and transfers from other funds 
projected
at $33.442  billion,  including  $299  million carried  over  from  the  
surplus
anticipated  for the State's 1993-94 fiscal year. Disbursements and transfers 
to
other funds are  projected at $33.399  billion and, in  addition, the  
financial
plan  includes a $23 million repayment  to the State's Tax Stabilization 
Reserve
Fund. The Division  of the  Budget projects  that at  the close  of the  
State's
1994-95  fiscal year, the balance in the  Tax Stabilization Reserve Fund will 
be
$157 million. The balance available in the Contingency Reserve Fund on April  
1,
1994 is projected by the Division of the Budget at $311 million.
    
 
   
   The  Revised 1993-94 State Financial Plan is based on a number of 
assumptions
and projections. Because it is not possible to predict accurately the 
occurrence
of all factors that may affect the Revised 1993-94 State Financial Plan,  
actual
results   may  differ  and  have  differed  materially  in  recent  years,  
from
projections made at the outset of a fiscal year. There can be no assurance  
that
the  State  will not  face  substantial potential  budget  gaps in  future 
years
resulting from a  significant disparity  between tax revenues  projected from  
a
lower  recurring  receipts  base and  the  spending required  to  maintain 
State
programs at current levels.  To address any  potential budgetary imbalance,  
the
State  may  need to  take significant  actions to  align recurring  receipts 
and
disbursements in future fiscal years.
    
 
    RECENT FINANCIAL RESULTS.   During its 1989-90,  1990-91 and 1991-92  
fiscal
years,  the State incurred cash-basis operating  deficits, prior to the 
issuance
of short-term tax and revenue anticipation notes, owing to  lower-than-
projected
receipts, which it believes to have been principally the result of a 
significant
slowdown  in the New York and regional  economy, and with respect to the 1989-
90
fiscal year, changes in taxpayer behavior  caused by the Federal Tax Reform  
Act
of 1986.
 
   
   The  General Fund is the  principal operating fund of  the State. It 
receives
all State income that  is not required  by law to be  deposited in another  
fund
which  for the State's 1993-94 fiscal year, comprises approximately 53% of 
total
projected governmental fund receipts.
    
 
   
   General Fund receipts, excluding transfers from other funds, totalled 
$28.818
billion in the State's 1991-92 fiscal  year (before repayment of $1.081  
billion
in  deficit notes issued in its 1990-91  fiscal year and before issuance of 
$531
million in  deficit  notes  to  close  the  1991-92  fiscal  year  General  
Fund
cash-basis  operating deficit) and $29.950 billion in the State's 1992-93 
fiscal
year (before repayment  of $531  million in deficit  notes issued  to close  
the
State's  1991-92  fiscal year  General  Fund cash-basis  deficit).  General 
Fund
receipts in the State's 1993-94 fiscal year are projected in the Revised 1993-
94
State Financial  Plan  to  total  $30.200 billion.  Taxes  account  for  96%  
of
estimated  fiscal  year  1993-94 and  1994-95  General Fund  receipts,  with 
the
balance comprised of miscellaneous receipts.
    
 
   
   General Fund disbursements, exclusive of  transfers to other funds,  
totalled
$28.058  billion in the State's  1991-92 fiscal year and  $29.068 billion in 
the
State's 1992-93  fiscal year  and are  projected to  total $30.421  billion  
and
$31.453 billion in the State's 1993-94 fiscal years, respectively.
    
 
   
   The  State's financial position as shown in  its Combined Balance Sheet as 
of
March 31,  1993 included  an accumulated  deficit in  its combined  
governmental
funds  of $681 million represented by  liabilities of $12.864 billion and 
assets
of $12.183 billion available to liquidate such liabilities.
    
 
                                       10
<PAGE>
   
    DEBT LIMITS AND OUTSTANDING DEBT.   There are a  number of methods by  
which
the  State of New York  may incur debt. Under  the State Constitution, the 
State
may not, with limited exceptions for emergencies, undertake long-term  
borrowing
(I.E., borrowing for more than one year) unless the borrowing is authorized in 
a
specific  amount for a single work or purpose by the Legislature and approved 
by
the voters. There is no limitation on  the amount of long-term debt that may  
be
so  authorized  and subsequently  incurred  by the  State.  The total  amount 
of
long-term State general obligation debt authorized but not issued as of 
December
31, 1993 was approximately $2.273 billion.
    
 
   The State may undertake short-term  borrowings without voter approval (i)  
in
anticipation  of the receipt of  taxes and revenues, by  issuing tax and 
revenue
anticipation notes, and (ii) in anticipation of the receipt of proceeds from 
the
sale of duly authorized but unissued bonds, by issuing bond anticipation  
notes.
The  State may also, pursuant to specific constitutional authorization, 
directly
guarantee certain obligations of the State of New York's authorities and  
public
benefit corporations ("Authorities"). Payments of debt service on New York 
State
general  obligation and  New York State-guaranteed  bonds and  notes are 
legally
enforceable obligations of the State of New York.
 
   The State of  New York also  employs two other  types of long-term  
financing
mechanisms  which are  State-supported but  are not  general obligations  of 
the
State: moral obligation and lease-purchase or contractual-obligation 
financing.
 
   
   In 1990, as part  of a State fiscal  reform program, legislation was  
enacted
creating the New York Local Government Assistance Corporation ("LGAC"), a 
public
benefit  corporation empowered  to issue  long-term obligations  to fund 
certain
payments to  local governments  traditionally funded  through New  York  
State's
annual seasonal borrowing. The Legislation empowered LGAC to issue its bonds 
and
notes in an amount not in excess of $4.7 billion (exclusive of certain 
refunding
bonds)  plus amounts to fund  a capital reserve fund,  to pay costs of 
issuance,
and to provide for certain capitalized  interest costs. Over a period of  
years,
the  issuance of  those long-term obligations,  which will be  amortized over 
no
more than 30 years, is expected to result in eliminating the need for 
continuing
short-term seasonal borrowing for those purposes. The legislation also imposed 
a
cap on the  annual seasonal borrowing  of the  State at $4.7  billion, less  
net
proceeds  of bonds issued  by LGAC and  bonds issued to  provide for 
capitalized
interest, except in cases  where the Governor and  the legislative leaders  
have
certified  both the need for additional borrowing and a schedule for reducing 
it
to the cap. If borrowing above the cap is thus permitted in any fiscal year,  
it
is  required by law to be reduced to the cap by the fourth fiscal year after 
the
limit was first exceeded. As of December 31, 1993, LGAC had issued its bonds  
to
provide  net proceeds  of $3.581  billion and has  been authorized  to issue 
its
bonds to provide net  proceeds of up  to an additional  $275 million during  
the
State's  1993-94 fiscal year. The Governor has recommended up to $315 million 
in
additional bond issuances in the 1994-95 fiscal year. In April 1993, 
legislation
was also enacted providing  for significant changes  in the long-term  
financing
practices of the State and the Authorities.
    
 
   On  March 26, 1990, Standard & Poor's Corporation ("S&P") downgraded New 
York
State's (1) general obligation bonds from "AA-" to "A" and (2) commercial  
paper
from  "A-1+" to "A-1". Also downgraded was certain of New York State's 
variously
rated moral  obligation, lease-purchase,  guaranteed and  contractual-
obligation
debt,  including debt issued by  certain New York State  agencies. On August 
27,
1990, S&P  affirmed these  ratings  without change.  On  June 6,  1990,  
Moody's
Investors  Services,  Inc. ("Moody's)  changed its  ratings  on all  the 
State's
outstanding general obligation bonds  from "A1" to "A".  On March 26, 1990,  
S&P
changed  its ratings  of all the  State's outstanding  general obligations 
bonds
from "AA-" to "A".
 
                                       11
<PAGE>
On January 6, 1992, Moody's  lowered from "A" to  "Baa1" the ratings on  
certain
appropriation-backed   debt  of  the  State  of   New  York  and  its  
agencies.
Approximately two-thirds  of  the  State's tax-supported  debt  is  affected  
by
Moody's  rating action. Moody's stated that  the more secure general 
obligation,
state-guaranteed and LGAC bonds continue to  be rated "A", but are placed  
under
review  for possible downgrade over the coming  months. On January 13, 1992, 
S&P
lowered its rating on $4.8 billion of New York State general obligation bonds 
to
"A-" from  "A".  Various  agency  debt,  state  moral  obligations,  
contractual
obligations,  lease-purchase obligations and state  guarantees are also 
affected
by S&P's action.  Additionally, under  S&P's minimum-rating  approach, New  
York
local  school district debt will now carry  a minimum rating of "A-" rather 
than
"A" and school  districts currently  rated "A"  are placed  on CreditWatch  
with
negative implications. In taking these rating actions, Moody's and S&P 
variously
cited  continued  economic deterioration,  chronic operating  deficits, 
mounting
GAAP fund balance deficits  and the legislative  stalemate in seeking  
permanent
and  structurally sound fiscal operations. On January 15, 1992, S&P took 
further
action by lowering the rating on the  claims-paying ability of the State of  
New
York  Mortgage Agency Mortgage Insurance Fund  to "BBB+" from "A-" following 
the
January 13, 1992 downgrade of New York State's general obligation bond rating 
to
"A-".
 
   
   The State anticipates  that its  borrowings for capital  purposes in  1993-
94
will  consist of  approximately $456  million in  general obligation  bonds. 
The
State also expects  to issue  approximately $140 million  in general  
obligation
bonds  for the  purpose of  redeeming outstanding  bond anticipation  notes. 
The
Legislature  has  also  authorized  the  issuance  of  up  to  $85  million   
in
certificates  of  participation  during  the  State's  1993-94  fiscal  year 
for
equipment purchases and real property purposes. The Governor has recommended 
the
issuance of $413 million in bonds and new commercial paper issuances for 
capital
purposes during the State's 1994-95 fiscal year. In addition, the State  
expects
to  issue $154 million  in bonds for  the purpose of  redeeming outstanding 
bond
anticipation notes.  The Governor  has also  recommended authorization  for  
the
issuance  of up  to $67.8  million in  certificates of  participation during 
the
State's 1994-95 fiscal year for  personal property acquisitions. The  
projection
of  the State regarding its borrowings for the 1993-94 fiscal year may change 
if
actual receipts  fall  short of  State  projections or  if  other  
circumstances
require.
    
 
   
   Payments for principal and interest due on general obligation bonds, 
interest
due  on bond anticipation notes  and on tax and  revenue anticipation notes, 
and
contractual-obligation and lease-purchase  commitments were  $1.783 billion  
and
$2.045 billion in the aggregate, for New York State's 1991-92 and 1992-93 
fiscal
years,  respectively, and are projected to  be $2.167 billion and $2.459 
billion
for the State's 1993-94 and 1994-95 fiscal years, respectively. These figures 
do
not include  interest  payable  on  either New  York  State  General  
Obligation
Refunding  Bonds issued on July 30, 1992, to the extent that such interest is 
to
be paid from an escrow fund established  with the proceeds of such bonds or  
New
York  State's installment payments  relating to the  issuance of certificates 
of
participation.
    
 
   New York  State  has  never  defaulted  on  any  of  its  general  
obligation
indebtedness  or its obligations  under lease-purchase or contractual-
obligation
financing arrangements  and  has never  been  called  upon to  make  any  
direct
payments pursuant to its guarantees. There has never been a default on any 
moral
obligation debt of any Authority.
 
   
    LITIGATION.    Certain  litigation pending  against  New York  State  or 
its
officers or employees could  have a substantial or  long-term adverse effect  
on
New  York State finances.  Among the more  significant of these  cases are 
those
that involve (a) the validity of agreements and treaties by which various 
Indian
tribes transferred title to the State of certain land in central and upstate 
New
York; (b) certain aspects of New York
    
 
                                       12
<PAGE>
   
State's  Medicaid   policies   and   its  rates   and   regulations,   
including
reimbursements  to providers  of mandatory  and optional  Medicaid services; 
(c)
contamination in the Love Canal area of Niagara Falls; (d) an action against 
the
State and  City officials  alleging inadequate  shelter allowances  to  
maintain
proper  housing; (e) challenges to the practice of reimbursing certain Office 
of
Mental Health patient care expenses from the client's Social Security  
benefits;
(f)  alleged  responsibility of  the State's  officials  to assist  in 
remedying
racial segregation in the  City of Yonkers;  (g) a challenge  to the methods  
by
which the State reimburses localities for the administrative costs of food 
stamp
programs;  (h) an  action in  which the  State is  a third  party defendant, 
for
injunctive or other appropriate relief, concerning liability for the 
maintenance
of stone groins constructed along certain areas of Long Island's shoreline;  
(i)
action by school districts and their employees challenging the 
constitutionality
of  Chapter 175 of the Laws of 1990 which deferred school district 
contributions
to the public  retirement system and  reduced by  like amount state  aid to  
the
school districts; (j) challenges to portions of Public Health Law, which 
imposed
a  13% surcharge  on inpatient  hospital bills  paid by  commercial insurers 
and
employee welfare benefit plans and  portions of Chapter 55  of the Laws of  
1992
requiring  hospitals  to impose  and  remit to  the  State an  11%  surcharge 
on
hospital  bills  paid  by  commercial   insurers,  and  which  required   
health
maintenance organizations to remit to the State a surcharge of up to 9%; and 
(k)
a  challenge to provisions of the Public Health Law and implementing 
regulations
that imposed a bad debt and charity  care allowance on all hospital bills and  
a
13% surcharge on inpatient bills paid by employee welfare benefit plans.
    
 
   
   A number of cases have also been instituted against the State challenging 
the
constitutionality of various public authority financing programs.
    
 
   
   In  a proceeding commenced on August 6, 1991  (SCHULZ, ET AL. V. STATE OF 
NEW
YORK,  ET  AL.,  Supreme  Court,  Albany  County),  petitioners  challenge   
the
constitutionality  of  two  bonding  programs  of  the  New  York  State 
Thruway
Authority authorized by Chapters 166 and 410  of the Laws of 1991. In  
addition,
petitioners  challenge the fiscal  year 1991-92 judiciary  budget as having 
been
enacted in  violation  of  Sections  1  and  2  of  Article  VII  of  the  
State
Constitution. The defendants' motion to dismiss the action on procedural 
grounds
was  denied by order of the Supreme Court  dated January 2, 1992. By order 
dated
November 5, 1992, the Appellate  Division, Third Department, reversed the  
order
of  the Supreme Court  and granted defendants'  motion to dismiss  on grounds 
of
standing and  mootness.  By  order  dated  September  16,  1993,  on  motion  
to
reconsider, the Appellate Division, Third Department, ruled that plaintiffs 
have
standing  to challenge the bonding program authorized by Chapter 166 of the 
Laws
of 1991. The proceeding is presently pending in Supreme Court, Albany County.
    
 
   
   In SCHULZ, ET  AL. V.  STATE OF  NEW YORK, ET  AL., commenced  May 24,  
1993,
Supreme  Court, Albany  County, petitioners  challenge, among  other things, 
the
constitutionality of,  and  seek to  enjoin  certain highway,  bridge  and  
mass
transportation  bonding programs of the New York State Thruway Authority and 
the
Metropolitan Transportation Authority authorized  by Chapter 56  of the Laws  
of
1993.  Petitioners contend  that the application  of State tax  receipts held 
in
dedicated transportation  funds to  pay debt  service on  bonds of  the  
Thruway
Authority  and of the Metropolitan  Transportation Authority violates Sections 
8
and 11 of Article VII and Section 5  of Article X of the State Constitution  
and
due  process provisions of  the State and Federal  Constitutions. By order 
dated
July 27,  1993,  the  Supreme  Court granted  defendants'  motions  for  
summary
judgment,  dismissed the complaint, and  vacated the temporary restraining 
order
previously
    
 
                                       13
<PAGE>
   
issued. By  decision  dated October  21,  1993, the  Appellate  Division,  
Third
Department,  affirmed the judgment  of the Supreme  Court. Plaintiffs' appeal 
of
the decision of the Appellate Division is pending in the Court of Appeals.
    
 
   
   Several actions  challenging  the constitutionality  of  legislation  
enacted
during the 1990 legislative sessions which changed actuarial funding methods 
for
determining  state and local contributions  to state employee retirement 
systems
have been decided against the State. The U.S. Supreme Court's decision in a 
case
challenging the State's  possession of  certain property taken  pursuant to  
the
State's  Abandoned Property Law may  result in the State  having to make 
certain
significant payments during the 1993-94 fiscal year or thereafter.
    
 
   
   The legal proceedings noted above involve State finances, State programs  
and
miscellaneous  tort, real property and  contract claims in which  the State is 
a
defendant and the  monetary damages  sought are  substantial. These  
proceedings
could  affect adversely the financial condition of  the State in the 1993-94 
and
1994-95 fiscal years or thereafter. Adverse developments in these proceedings 
or
the initiation  of new  proceedings could  affect the  ability of  the State  
to
maintain a balanced Revised 1993-94 State Financial Plan. An adverse decision 
in
any  of these proceedings could  exceed the amount of  the revised 1993-94 
State
Financial Plan reserve for the payment of judgments and, therefore, could 
affect
the ability of the State to maintain a balanced Revised 1993-94 State  
Financial
Plan. In its audited financial statements for the 1992-93 fiscal year, the 
State
has  reported its estimate for awarded  and anticipated unfavorable judgments 
to
be $721 million. Although  other litigation is pending  against New York  
State,
except  as  described above,  no current  litigation  involves New  York 
State's
authority, as a matter of law, to contract indebtedness, issue its  
obligations,
or  pay such indebtedness when it matures,  or affects New York State's power 
or
ability, as a matter of law, to  impose or collect significant amounts of  
taxes
and revenues.
    
 
   
    AUTHORITIES.   The  fiscal stability  of New  York State  is related  to 
the
fiscal stability of  its Authorities,  which generally  have responsibility  
for
financing,   constructing   and  operating   revenue-producing   public  
benefit
facilities. Authorities are  not subject to  the constitutional restrictions  
on
the  incurrence of debt which apply to the State itself, and may issue bonds 
and
notes within the amounts of, and  as otherwise restricted by, their  
legislative
authorization.  As of September 30, 1993,  the latest data available, there 
were
18 Authorities that had outstanding debt of $100 million or more. The  
aggregate
outstanding  debt, including refunding bonds, of  these 18 Authorities was 
$63.5
billion as of September 30, 1993, of which approximately $7.7 billion was  
moral
obligation   debt   and   approximately  $19.3   billion   was   financed  
under
lease-purchase or contractual-obligation financing arrangements.
    
 
   
   Authorities are generally  supported by  revenues generated  by the  
projects
financed  or operated, such  as fares, user  fees on bridges,  highway tolls 
and
rentals for dormitory  rooms and  housing. In  recent years,  however, New  
York
State has provided financial assistance through appropriations, in some cases 
of
a  recurring nature, to  certain of the  18 Authorities for  operating and 
other
expenses and, in fulfillment of its commitments on moral obligation 
indebtedness
or otherwise,  for  debt  service.  This operating  assistance  is  expected  
to
continue  to be required in future years. New York State provided $947.4 
million
and $955.5 million in financial assistance to the 18 Authorities during New 
York
State's 1991-92 and 1992-93 fiscal  years, respectively, and expects to  
provide
approximately  $1,171.3 million and $1,387.8  million in financial assistance 
to
these Authorities in  its 1993-94  and 1994-95 fiscal  years, respectively.  
The
amounts   set  forth  above  exclude,  however,  amounts  provided  for  
capital
construction and pursuant to lease-purchase or contractual-obligation 
(including
service contract debt) financing arrangements.
    
 
                                       14
<PAGE>
   Experience  has  shown  that  if  an  Authority  suffers  serious   
financial
difficulties,  both  the ability  of  the State  and  the Authorities  to 
obtain
financing in  the public  credit markets  and the  market price  of the  
State's
outstanding  bonds  and notes  may  be adversely  affected.  The New  York 
State
Housing Finance Agency and the New York State Urban Development Corporation 
have
in the past required  substantial amounts of assistance  from the State to  
meet
debt service costs or to pay operating expenses. Further assistance, possibly 
in
increasing  amounts, may  be required  for these  Authorities in  the future. 
In
addition, certain  statutory arrangements  provide  for State  local  
assistance
payments  otherwise payable to localities to be made under certain 
circumstances
to certain  Authorities.  The State  has  no obligation  to  provide  
additional
assistance  to  localities whose  local assistance  payments  have been  paid 
to
Authorities under  these arrangements.  However, in  the event  that such  
local
assistance  payments  are  so  diverted,  the  affected  localities  could  
seek
additional State funds.
 
   
    NEW YORK CITY AND OTHER LOCALITIES.   The fiscal health of the State of  
New
York is closely related to the fiscal health of its localities, particularly 
the
City  of  New York,  which  has required  and  continues to  require 
significant
financial assistance  from  New York  State.  The City's  independently  
audited
operating  results for each of its 1981  through 1993 fiscal years, which end 
on
June 30, show a General Fund surplus reported in accordance with GAAP. The  
City
has  eliminated  the cumulative  deficit in  its net  General Fund  position. 
In
addition, the City's financial statements for  the 1993 fiscal year received  
an
unqualified  opinion from the City's independent auditors, the tenth 
consecutive
year the City has received such an opinion.
    
 
   
   In 1975, New York City suffered  a fiscal crisis that impaired the  
borrowing
ability  of both the City and New York  State. In that year the City lost 
access
to public credit markets. The City was not able to sell short-term notes to  
the
public again until 1979.
    
 
   On  February 11,  1991, Moody's  lowered their  rating on  the City's 
general
obligation bonds to "Baa1" from "A". Moody's expressed doubts about whether  
the
City's January 16, 1991 financial plan presents a "reasonable program to 
achieve
budget  balance  in  fiscal  1991  and  1992  and  assure  long-term  
structural
integrity." Moody's stated "the enormity of the current problem, the severity 
of
required expenditure cuts,  the substantial  revenue enhancements  that will  
be
required  to achieve  balance, the vulnerability  to exogenous  factors, and 
the
extremely short time frame within which all this must be accomplished  
introduce
substantial  new  risk to  the City's  short-and  long-term credit  outlook." 
On
November 6, 1991, commenting  on New York City's  1992-1996 Financial Plan,  
S&P
stated that "at first glance, the proposals fall short of a structural change 
in
[C]ity  finances and  operations, and represent  only a  timetable for 
potential
balancing actions, dependent on future decisions by [C]ity and [S]tate 
officials
for implementation." S&P  noted that  "without early commitments  to the  
longer
term  actions  in  the plan,  the  use  of debt  refinancing  by  [the 
Municipal
Assistance Corporation] for  a two-year  tax freeze  would be  little more  
than
deficit financing, and negative for the City's current single 'A' minus 
rating."
On  April 29, 1991, S&P  downgraded New York City's  outstanding $1.3 billion 
of
general obligation revenue  and anticipation  notes from "SP-1"  to "SP-2".  
S&P
also  announced a rating of  "SP-2" for the City's  offering of $1.25 billion 
of
general obligation revenue anticipation notes. The lower ratings of S&P 
"reflect
the City's aggravated short-term  cash position for  fiscal 1991, the  
unusually
high  level  of  total revenue  anticipation  note exposure  resulting  from 
the
State's delay in passing its budget  and distributing fiscal aid, and  
continued
pressure on revenues and expenditures due to prevailing economic conditions." 
On
April  30, 1991, Moody's  assigned a rating  of "MIG-2" to  the same offering 
of
$1.25 billion of general obligation  revenue anticipation notes. Moody's  
stated
that  "although an increasingly strained financial outlook for both the City 
and
the State complicates the State
 
                                       15
<PAGE>
budget adoption  process,  this  rating on  revenue  anticipation  notes  
relies
explicitly  on  the  expectation  that  the  State  is  fully  cognizant  of 
the
consequences of further untimely  delays in state budget  adoption and will  
act
responsibly.  Failure of  the State  to find a  timely resolution  to the 
budget
process will have severe  implications for the  normal financial performance  
of
New  York City  and other local  governments in  New York State."  On October 
7,
1991, Moody's again assigned a "MIG-2"  rating to New York City's $1.25  
billion
of revenue anticipation notes, fiscal 1992, Series A.
 
   Moody's  stated in its  January 6, 1992  downgrade of certain  New York 
State
obligations that while such action did  not directly affect the bond ratings  
of
local governments in New York State, the impact of the State's fiscal 
stringency
on  local government bond ratings  will be assessed on  a case-by-case basis. 
On
June 22,  1992, Moody's  gave its  "MIG-1"  rating to  the City's  $1.4  
billion
revenue  anticipation notes  and tax anticipation  notes citing  New York 
City's
"markedly improved" short-term credit position.
 
   
   On July 6, 1993, S&P  reaffirmed the City's "A-"  rating on $20.4 billion  
of
general  obligation  bonds stating  that "[t]he  City has  identified 
additional
gap-closing measures  that have  recurring  value and  will reduce  next  
year's
budget  gap .  . .  by approximately  $400 million."  Officials at  Moody's 
also
indicated that there  were no plans  to alter  its "Baa1" rating  on the  
City's
general obligation bonds.
    
 
   
   New  York City is heavily dependent on  New York State and federal 
assistance
to cover insufficiencies in its revenues. There can be no assurance that in  
the
future  federal and State assistance will enable  the City to make up its 
budget
deficits. To help alleviate the  City's financial difficulties, the  
Legislature
created  the Municipal Assistance Corporation ("MAC") in 1975. MAC is 
authorized
to issue bonds and notes payable from certain stock transfer tax revenues,  
from
the City's portion of the State sales tax derived in the City and from State 
per
capita  aid otherwise payable by the State to  the City. Failure by the State 
to
continue the imposition of such taxes, the  reduction of the rate of such  
taxes
to  rates less than those in effect on July 2, 1975, failure by the State to 
pay
such aid revenues and the reduction of such aid revenues below a specified 
level
are included among the  events of default in  the resolutions authorizing  
MAC's
long-term  debt.  The  occurrence of  an  event  of default  may  result  in 
the
acceleration of the maturity of all or a portion of MAC's debt. As of  
September
30,  1993, MAC had  outstanding an aggregate of  approximately $5.304 billion 
of
its bonds. MAC bonds and notes constitute general obligations of MAC and do  
not
constitute  an enforceable obligation or  debt of either the  State or the 
City.
Under its enabling legislation, MAC's authority to issue bonds and notes  
(other
than  refunding bonds and  notes) expired on December  31, 1984. Legislation 
has
been passed by the legislature which would, under certain conditions, permit 
MAC
to issue up to $1.465  billion of additional bonds, which  are not subject to  
a
moral obligation provision.
    
 
   Since  1975, the City's financial condition has been subject to oversight 
and
review by the New York State  Financial Control Board (the "Control Board")  
and
since  1978 the  City's financial  statements have  been audited  by 
independent
accounting firms. To  be eligible  for guarantees  and assistance,  the City  
is
required  during  a  "control  period"  to  submit  annually  for  Control 
Board
approval, and when a control period is not in effect for Control Board review, 
a
financial plan for  the next  four fiscal years  covering the  City and  
certain
agencies  showing balanced budgets determined in  accordance with GAAP. New 
York
State also established the Office of  the State Deputy Comptroller for New  
York
City  ("OSDC")  to  assist  the  Control  Board  in  exercising  its  powers 
and
responsibilities.  On  June   30,  1986,  the   City  satisfied  the   
statutory
requirements  for termination of the control period. This means that the 
Control
Board's powers  of approval  are  suspended, but  the  Board continues  to  
have
oversight responsibilities.
 
                                       16
<PAGE>
   
   On  November 23, 1993, the City adopted  and submitted to the Control Board 
a
modification to  its  1994-1997  Financial Plan  (the  "November  
Modification")
incorporating various re-estimates of revenues and expenditures. For fiscal 
year
1994, the November Modification includes additional resources stemming 
primarily
from  the  City comptroller's  fiscal  year 1993  annual  audit, savings  from 
a
reduction in prior years' accrued expenditures, and higher State and federal 
aid
resulting from claims by the City  for reimbursement of various social  
services
costs.  These resources were used to fund new needs in the November 
Modification
including higher costs  in the  uniformed agencies,  at the  Board of  
Education
("BOE") and for certain social services, the unlikelihood of the sale of 
certain
City  assets, and  lower estimates  of miscellaneous  and other  revenues. 
After
taking these adjustments  into account,  the November  Modification projected  
a
balanced  budget for fiscal  year 1994, based upon  revenues of $31.585 
billion.
For fiscal years 1995, 1996 and 1997, the November Modification projected 
budget
gaps of $1.730 billion, $2,513  billion and $2.699 billion, respectively.  
These
gaps  are higher  by about $450  million in fiscal  year 1995 and  by about 
$700
million in each  of fiscal years  1996 and  1997 than in  the 1994-97  
Financial
Plan,  primarily on account of  the non-recurring value of  the fiscal year 
1994
revenue adjustments, the loss of  certain one-time resources funding BOE  
fiscal
year 1994 spending needs, and the reclassification of anticipated State aid 
from
the  baseline  revenue estimates  to the  gap-closing  program. To  offset 
these
larger gaps,  the November  Modification relies  on additional  City, State  
and
other actions.
    
 
   
   On December 21, 1993, the staff of the Control Board issued its report on 
the
November Modification. The report stated that the plan was now more realistic 
in
terms  of  the gaps  it portrayed  and  the solutions  it offered.  However, 
the
solutions were mostly limited to fiscal year 1994 while the gap for fiscal  
year
1995  has been increased by $450 million.  Beginning in fiscal year 1995, 
budget
gaps will average  over $2  billion annually. Therefore,  the staff  
recommended
that prompt action to replace many current-year one-shots with recurring 
savings
was  critical.  The  staff  advocated  a  vigorous  and  effective  strategy  
to
restructure revenues and  expenditures, accompanied by  a convincingly  
detailed
plan of implementation. The report focused attention on the need for the City 
to
closely  examine its capital spending  priorities, including appropriate 
funding
for ongoing maintenance, implementation of a stretch-out of capital 
commitments,
and development of  a written debt  policy. In addition,  the report noted  
that
administrative  other-than-personal-service expenditures have not shared in 
past
spending reduction and must begin  to do so, and that  the City must assemble  
a
coherent  labor  policy  that  integrates  productivity  initiatives  with  
wage
increases and headcount reductions. The  report concluded that actions taken  
in
the  next few  months are  critical to reverse  the expansion  that has 
occurred
since the fiscal year 1994 budget was adopted.
    
 
   
   On December  1, 1993,  a three-member  panel appointed  by then  Mayor  
David
Dinkins  to address  the City's  structural budget  imbalance released  a 
report
setting forth its findings and recommendations.  In its report, the panel  
noted
that budget imbalance is likely to be greater than the City now projects by 
$255
million  in fiscal year 1995, rising to nearly $1.5 billion in fiscal year 
1997.
The report  provided  a number  of  options that  the  City should  consider  
in
addressing  the structural balance  issue such as  cuts in City-funded 
personnel
levels, increases  in residential  property taxes  and the  sales tax,  and  
the
imposition  of bridge  tolls and  solid waste  collection fees.  The report 
also
noted that additional State action will  be required in many instances to  
allow
the City to cut its budget without grave damage to basic services.
    
 
   
   OSDC  issued a report on the City's  economy on November 23, 1993. The 
report
concluded that the four-year-old recession in New York City was ending, and 
that
Wall Street industries  were leading  the turn-around with  increased levels  
of
activity,  profits,  compensation  and  employment.  The  report  indicated 
that
    
 
                                       17
<PAGE>
   
the slow process of ending the local  recession has been influenced by the  
slow
rate  of expansion in the  nation and the recessions  in Europe and Japan, 
which
have  hurt  the   City's  key   export  industries   of  finance,   
advertising,
communications,  law and medicine.  However, the report  noted that 
improvements
are now evident in  these areas. In  addition, the report  noted that the  
local
rate  of inflation has  dropped below that  of the nation,  leasing activity 
for
primary office space  has increased,  the rate of  decline in  retail sales  
has
slowed  and unemployment, while  still high, has  declined two percentage 
points
over the last year. The report  projected that overall employment levels in  
the
City's private sector industries would be higher by early 1994. However, it 
also
indicated that the recovery in the local economy would likely be a slow 
process,
in many ways mirroring the recent experience on the national level.
    
 
   Estimates  of  the City's  revenues and  expenditures  are based  on 
numerous
assumptions and are subject to various uncertainties. If expected federal or 
New
York State aid  is not forthcoming,  if unforeseen developments  in the  
economy
significantly  reduce  revenues  derived from  economically  sensitive  taxes 
or
necessitate increased expenditures  for public  assistance, if  the City  
should
negotiate wage increases for its employees greater than the amounts provided 
for
in  the City's financial plan or  if other uncertainties materialize that 
reduce
expected revenues or increase projected  expenditures, then, to avoid  
operating
deficits,  the City may  be required to  implement additional actions, 
including
increases in taxes  and reductions in  essential City services.  The City  
might
also seek additional assistance from New York State.
 
   
   The  City  required certain  amounts of  financing  for seasonal  and 
capital
spending purposes.  The City  has issued  $1.75 billion  of notes  for  
seasonal
financing  purposes during  its 1994 fiscal  year. The  City's capital 
financing
program projects long-term financing requirements of approximately $18.5 
billion
for the City's fiscal years 1994 through 1997 and other fixed assets. The  
major
capital requirements include expenditures for the City's water supply and 
sewage
disposal  systems, roads, bridges, mass transit, schools, hospitals and 
housing.
In addition  to financing  for new  purposes, the  City and  the New  York  
City
Municipal  Water Finance  Authority have  issued refunding  bonds totalling 
$1.5
billion in fiscal year 1994.
    
 
   
   Certain localities, in addition  to the City,  could have financial  
problems
leading  to requests for additional New York State assistance during the 
State's
1993-94 and 1994-95  fiscal years and  thereafter. The potential  impact on  
New
York  State of such actions by localities  is not included in the projections 
of
the State receipts  and disbursements in  New York State's  1993-94 and  1994-
95
fiscal years.
    
 
   Fiscal  difficulties experienced by the  City of Yonkers ("Yonkers") 
resulted
in the creation  of the Financial  Control Board  for the City  of Yonkers  
(the
"Yonkers  Board") by New York  State in 1984. The  Yonkers Board is charged 
with
oversight of the fiscal affairs of Yonkers. Future actions taken by the 
Governor
or the Legislature  to assist  Yonkers could result  in allocation  of New  
York
State resources in amounts that cannot yet be determined.
 
   
   Municipalities  and school  districts have engaged  in substantial short-
term
and long-term borrowings. In 1992, the  total indebtedness of all localities  
in
New  York State was approximately $35.2 billion, of which $19.5 billion was 
debt
of New  York  City  (excluding  $5.9  billion in  MAC  debt);  a  small  
portion
(approximately  $71.6  million) of  this  indebtedness represented  borrowing 
to
finance budgetary deficits and  was issued pursuant to  enabling New York  
State
legislation.   State   law  requires   the  Comptroller   to  review   and  
make
recommendations concerning the  budgets of  those local  government units  
other
than New York City
    
 
                                       18
<PAGE>
   
authorized by State law to issue debt to finance deficits during the period 
that
such  deficit  financing is  outstanding.  Seventeen localities  had 
outstanding
indebtedness for deficit financing at the  close of their fiscal year ending  
in
1992.
    
 
   
   In  1992,  an  unusually large  number  of local  government  units 
requested
authorization for deficit financings. According to the State's comptroller,  
ten
local  government units have  been authorized to issue  deficit financing in 
the
aggregate amount of $131.1 million. The  current session of the Legislature  
may
receive  as  many or  more requests  for  deficit-financing authorizations  as 
a
result of  deficits  previously  incurred by  local  governments.  Although  
the
comptroller  has  indicated  that the  level  of deficit  financing  requests 
is
unprecedented, such developments  are not  expected to have  a material  
adverse
effect on the financial condition of the State.
    
 
   Certain  proposed  federal expenditure  reductions would  reduce, or  in 
some
cases eliminate, federal funding  of some local  programs and accordingly  
might
impose  substantial increased expenditure requirements on affected localities 
to
increase local revenues to  sustain those expenditures. If  New York State,  
New
York   City  or  any  of  the  Authorities  were  to  suffer  serious  
financial
difficulties jeopardizing their respective access to the public credit  
markets,
the  marketability of notes and bonds issued by localities within New York 
State
could be  adversely affected.  Localities also  face anticipated  and  
potential
problems  resulting  from  certain pending  litigation,  judicial  decisions 
and
long-range economic  trends. The  longer-range potential  problems of  
declining
urban  population,  increasing  expenditures  and  other  economic  trends 
could
adversely affect  certain  localities  and require  increasing  New  York  
State
assistance in the future.
 
ADDITIONAL PURCHASE AND REDEMPTION INFORMATION
 
IN GENERAL
 
   
Information  on how to purchase and redeem  Fund shares, and how such shares 
are
priced, is included in the Prospectus. The issuance of shares is recorded on 
the
books of the Fund, and share certificates are not issued.
    
 
   
   The regulations  of  the  Comptroller of  the  Currency  (the  
"Comptroller")
provide  that funds held in a fiduciary  capacity by a national bank approved 
by
the Comptroller to exercise fiduciary powers must be invested in accordance 
with
the instrument establishing the fiduciary relationship and local law. The  
Trust
believes  that the  purchase of  Fund shares  by such  national banks  acting 
on
behalf of their fiduciary accounts is not contrary to applicable regulations  
if
consistent  with the particular  account and proper under  the law governing 
the
administration of the account.
    
 
   
   Conflict of interest restrictions  may apply to  an institution's receipt  
of
compensation paid by the Fund on fiduciary funds that are invested in the 
Fund's
Class  B  or Class  C  shares. Institutions,  including  banks regulated  by 
the
Comptroller and  investment advisers  and other  money managers  subject to  
the
jurisdiction   of  the  SEC,  the  Department   of  Labor  or  state  
securities
commissions, should  consult their  legal  advisers before  investing  
fiduciary
funds in the Fund's Class B or Class C shares.
    
 
   Prior  to effecting a  redemption of shares  represented by certificates, 
The
Shareholder Services Group, Inc. ("TSSG"), the Trust's transfer agent, must 
have
received such certificates at its  principal office. All such certificates  
must
be endorsed by the redeeming shareholder or accompanied by a signed stock 
power,
in  each instance with the signature guaranteed by a commercial bank or a 
member
of a major stock
 
                                       19
<PAGE>
exchange,  unless other  arrangements satisfactory  to the  Fund have 
previously
been made. The Fund may require any additional information reasonably  
necessary
to evidence that a redemption has been duly authorized.
 
   
   Under  the 1940 Act, the Fund may suspend the right of redemption or 
postpone
the date of payment  upon redemption for  any period during  which the New  
York
Stock  Exchange ("Exchange") is closed, other than customary weekend and 
holiday
closings, or during which trading on the Exchange is restricted, or during 
which
(as determined by the SEC by rule or regulation) an emergency exists as a 
result
of which  disposal  or  valuation  of portfolio  securities  is  not  
reasonably
practicable, or for such other periods as the SEC may permit. (The Fund may 
also
suspend  or postpone  the recordation  of the  transfer of  its shares  upon 
the
occurrence of any of the foregoing conditions.) In addition, the Fund may 
redeem
shares involuntarily  in  certain  other  instances if  the  Board  of  
Trustees
determines  that failure to redeem may have material adverse consequences to 
the
Fund's shareholders  in  general.  If  the Board  of  Trustees  determines  
that
conditions exist which make payment of redemption proceeds wholly in cash 
unwise
or undesirable, the Fund may make payment wholly or partly in readily 
marketable
securities  or other property. In certain  instances, the Fund may redeem 
shares
pro  rata  from  each  shareholder   of  record  without  payment  of   
monetary
consideration. See "Net Asset Value" below.
    
 
   
   Any  institution purchasing  shares on  behalf of  separate accounts  will 
be
required to  hold the  shares in  a single  nominee name  (a "Master  
Account").
Institutions investing in more than one class of the Fund's shares must 
maintain
a  separate Master  Account for each  class. Sub-accounts may  be established 
by
name or number either when the Master Account is opened or later.
    
 
NET ASSET VALUE
 
The Fund's net asset value per share is calculated by adding the value of all 
of
the Fund's  portfolio  securities  and  other  assets  belonging  to  the  
Fund,
subtracting  the liabilities charged  to the Fund  including dividends that 
have
been declared but not paid, and dividing the result by the number of the  
Fund's
shares  outstanding (irrespective of class or series). "Assets belonging to" 
the
Fund consist  of the  consideration received  upon the  issuance of  the  
Fund's
shares together with all income, earnings, profits and proceeds derived from 
the
investment thereof, including any proceeds from the sale of such investments 
and
any  funds or  payments derived  from any  reinvestment of  such proceeds  and 
a
portion of  any  general assets  of  the Trust  not  belonging to  a  
particular
portfolio.  Assets belonging to the Fund are charged with the direct 
liabilities
of the Fund and with a share  of the general liabilities of the Trust  
allocated
on  a daily basis in proportion  to the relative net assets  of the Fund and 
the
Trust's other portfolios. Determinations  made in good  faith and in  
accordance
with  generally accepted accounting principles of  the Trust's Board of 
Trustees
as to the allocation of any assets  or liabilities with respect to the Fund  
are
conclusive.
 
   As  stated in the Prospectus, in computing  the net asset value of its 
shares
for purposes of sales and redemptions,  the Fund uses the amortized cost  
method
of  valuation.  Under  this  method,  the  Fund  values  each  of  its 
portfolio
securities at cost  on the date  of purchase and  thereafter assumes a  
constant
proportionate  amortization of  any discount  or premium  until maturity  of 
the
security. As  a  result, the  value  of a  portfolio  security for  purposes  
of
determining  net asset value normally does not change in response to 
fluctuating
interest rates. While the amortized cost method provides certainty in  
portfolio
valuation, it may result in valuations of the Fund's securities which are 
higher
or lower than the market value of such securities.
 
                                       20
<PAGE>
   In  connection with its use of amortized  cost valuation, the Fund limits 
the
dollar-weighted average maturity of its portfolio  to not more than 90 days  
and
does  not purchase  any instrument  with a  remaining maturity  of more  than 
13
months (397 days) (with certain exceptions).  The Trust's Board of Trustees  
has
also  established, pursuant to rules promulgated by the SEC, procedures that 
are
intended to stabilize the Fund's net asset value per share for purposes of 
sales
and redemptions  at $1.00.  Such procedures  include the  determination at  
such
intervals  as the Board deems  appropriate, of the extent,  if any, to which 
the
Fund's net asset value per share calculated by using available market 
quotations
deviates from $1.00 per share.  In the event such  deviation exceeds 1/2 of  
1%,
the  Board will promptly consider  what action, if any,  should be initiated. 
If
the Board  believes that  the amount  of  any deviation  from the  Fund's  
$1.00
amortized  cost price per share may result  in material dilution or other 
unfair
results to investors  or existing shareholders,  it will take  such steps as  
it
considers   appropriate  to  eliminate  or   reduce  to  the  extent  
reasonably
practicable any such dilution or unfair results. These steps may include 
selling
portfolio instruments prior to maturity to realize capital gains or losses or 
to
shorten the  Fund's  average  portfolio  maturity,  redeeming  shares  in  
kind,
reducing  or withholding  dividends, or  utilizing a  net asset  value per 
share
determined by using available market quotations.
 
MANAGEMENT OF THE FUND
TRUSTEES AND OFFICERS
 
The  Trust's  trustees  and  executive  officers,  their  addresses,   
principal
occupations during the past 5 years and other affiliations are as follows:
 
   
<TABLE>
<CAPTION>
                                                                   PRINCIPAL 
OCCUPATIONS DURING PAST 5 YEARS
NAME AND ADDRESS               POSITION WITH THE TRUST                      
AND OTHER AFFILIATIONS
----------------------------  --------------------------  --------------------
---------------------------------------
<S>                           <C>                         <C>
Steven Spiegel(1)(2)          Vice Chairman of the Board  Managing Director, 
Lehman Brothers; President, Lehman
 3 World Financial Center     and Trustee                 Brothers Global 
Asset Management Inc.; formerly Chairman,
 New York, NY 10285                                       Lehman Brothers 
International (Europe).
Charles F. Barber(2)(3)       Trustee                     Consultant; formerly 
Chairman of the Board, ASARCO
 66 Glenwood Drive                                        Incorporated.
 Greenwich, CT 06830
Burt N. Dorsett(2)(3)         Trustee                     Managing Partner, 
Dorsett McCabe Capital Management, Inc.,
 201 East 62nd Street                                     an investment 
counselling firm; Director, Research
 New York, NY 10022                                       Corporation 
Technologies, a non-profit patent-clearing and
                                                          licensing operation; 
formerly President, Westinghouse
                                                          Pension Investments 
Corporation; formerly Executive Vice
                                                          President and 
Trustee, College Retirement Equities Fund,
                                                          Inc., a variable 
annuity fund; and formerly Investment
                                                          Officer, University 
of Rochester.
Edward J. Kaier(2)(3)         Trustee                     Partner with the law 
firm of Hepburn Willcox Hamilton &
 1100 One Penn Center                                     Putnam.
 Philadelphia, PA 19103
</TABLE>
    
 
                                       21
<PAGE>
 
   
<TABLE>
<CAPTION>
                                                                   PRINCIPAL 
OCCUPATIONS DURING PAST 5 YEARS
NAME AND ADDRESS               POSITION WITH THE TRUST                      
AND OTHER AFFILIATIONS
----------------------------  --------------------------  --------------------
---------------------------------------
<S>                           <C>                         <C>
S. Donald Wiley(2)(3)         Trustee                     Vice-Chairman and 
Trustee, H.J. Heinz Company Foundation;
 USX Tower                                                prior to October 
1990, Senior Vice President, General
 Pittsburgh, PA 15219                                     Counsel and 
Secretary, H.J. Heinz Company.
Peter Meenan                  President                   Managing Director of 
Lehman Brothers; President of Lehman
 260 Franklin Street                                      Brothers 
Institutional Funds Group Trust; formerly,
 Boston, MA 02110                                         Director, Senior 
Vice President and Director of
                                                          Institutional Fund 
Services, The Boston Company Advisors,
                                                          Inc. from February 
1984 to May 1993; Director, Funds
                                                          Distributor, Inc. 
(1992-1993); Senior Vice President, The
                                                          Boston Company 
Advisors, Inc. from August 1984 to May 1993.
John M. Winters               Vice President and          Senior Vice 
President and Senior Money Market Portfolio
 3 World Financial Center     Investment Officer          Manager, Lehman 
Brothers Global Asset Management Inc.;
 New York, NY 10285                                       formerly Product 
Manager with Lehman Brothers Capital
                                                          Markets Group.
Michael C. Kardok             Treasurer                   Vice President, The 
Shareholder Services Group, Inc.; prior
 One Exchange Place                                       to May 1994, Vice 
President, The Boston Company Advisors,
 Boston, MA 02109                                         Inc.
Patricia L. Bickimer          Secretary                   Vice President and 
Associate General Counsel, The
 One Exchange Place                                       Shareholder Services 
Group, Inc.; prior to May 1994, Vice
 Boston, MA 02109                                         President and 
Associate General Counsel, The Boston Company
                                                          Advisors, Inc.
<FN>
------------------------
1. Considered by the Trust to be "interested persons" of the Trust as defined 
in
the 1940 Act.
2. Audit Committee Member.
3. Nominating Committee Member.
</TABLE>
    
 
   
   Two  trustees of the Trust, Messrs. Barber  and Dorsett, serve as trustees 
or
directors of other investment companies for which Lehman Brothers, LBGAM or  
one
of their affiliates serves as distributor or investment adviser.
    
 
   
   No  employee of Lehman Brothers, LBGAM or TSSG receives any compensation 
from
the Trust for acting as an officer or trustee of the Trust. The Trust pays  
each
trustee  who is not a director, officer or employee of Lehman Brothers, LBGAM 
or
TSSG or any  of their affiliates,  a fee of  $20,000 per annum  plus $1,250  
per
meeting attended and reimburses them for travel and out-of-pocket expenses.
    
 
   
   By virtue of the responsibilities assumed by Lehman Brothers, LBGAM, TSSG 
and
their  affiliates under  their respective agreements  with the  Trust, the 
Trust
itself requires no employees in addition to its officers.
    
 
                                       22
<PAGE>
   
INVESTMENT ADVISER
    
   
LBGAM serves as  the investment  adviser to  the Fund.  The investment  
advisory
agreement  provides that LBGAM  is responsible for  all investment activities 
of
the Fund,  including  executing  portfolio  strategy,  Fund  purchase  and  
sale
transactions  and employs professional portfolio  managers and security 
analysts
who provide research for the Fund.
    
 
   
   The Investment Advisory Agreement with respect to the Funds will continue  
in
effect  for a period of two years from February 5, 1993 and thereafter from 
year
to year provided the continuance is  approved annually (i) by the Trust's  
Board
of  Trustees or (ii) by a  vote of a "majority" (as  defined in the 1940 Act) 
of
the Fund's  outstanding  voting securities,  except  that in  either  event  
the
continuance  is also approved by a majority of the Trustees of the Trust who 
are
not "interested persons" (as defined in  the 1940 Act). The Investment  
Advisory
Agreement  may be terminated (i)  on 60 days' written  notice by the Trustees 
of
the Trust, (ii)  by vote  of holders  of a  majority of  the Fund's  
outstanding
voting  securities, or upon 90 days' written notice by Lehman Brothers, or 
(iii)
automatically in the event of its assignment (as defined in the 1940 Act).
    
 
   
   As compensation for LBGAM's  services rendered to the  Fund, the Fund pays  
a
fee,  computed daily and paid monthly, at the annual rate of .30% of the 
average
daily net assets of the Fund. As of January 31, 1994, the Fund had not 
commenced
operations and, accordingly, no advisory fees were paid by the Fund. In order 
to
maintain a competitive expense  ratio during 1994  through 1997, the  
investment
adviser  and administrator have agreed to  reimburse the Fund if total 
operating
expenses exceed certain levels. See "BACKGROUND AND EXPENSE INFORMATION" in  
the
Prospectus.
    
 
   
ADMINISTRATOR AND TRANSFER AGENT
    
   
TSSG,  a subsidiary of First Data Corporation, is located at One Exchange 
Place,
Boston, Massachusetts  02109,  and  serves  as  the  Trust's  administrator  
and
transfer  agent. As  the Fund's  administrator, TSSG  has agreed  to provide 
the
following services: (i) assist generally  in supervising the Fund's  
operations,
providing  and supervising the operation of  an automated data processing 
system
to process purchase and redemption orders, providing information concerning  
the
Fund  to its shareholders of  record, handling shareholder problems, 
supervising
the services  of employees  whose principal  responsibility and  function is  
to
preserve  and strengthen  shareholder relations and  monitoring the 
arrangements
pertaining to the Fund's agreements with Service Organizations; (ii)  
accumulate
information  for  and  coordinate  the  preparation  of  reports  to  the 
Fund's
shareholders and the SEC;  (iii) compute the  net asset value  per share of  
the
Fund;  (iv)  provide the  services  of certain  persons  who may  be  elected 
as
trustees or appointed as officers of the Trust by the Board of Trustees; and 
(v)
maintain the registration or qualification of  the Fund's shares for sale  
under
state  securities laws. TSSG receives, as compensation for its services 
rendered
under an administration  agreement, an  administrative fee,  computed daily  
and
paid monthly, at the annual rate of .10% of the average daily net assets of 
each
Fund.  TSSG pays  Boston Safe,  the Fund's custodian,  a portion  of its 
monthly
administration fee for custody services rendered to the Fund. As of January  
31,
1994,  the Fund had not commenced operations and, accordingly, no 
administration
fees were paid by  the Fund. In  order to maintain  a competitive expense  
ratio
during  1994 through 1997, the investment  adviser and administrator have 
agreed
to reimburse the  Fund if total  operating expenses exceed  certain levels.  
See
"BACKGROUND AND EXPENSE INFORMATION" in the Prospectus.
    
 
                                       23
<PAGE>
   
   Under  the transfer agency agreement,  TSSG maintains the shareholder 
account
records for the Trust, handles  certain communications between shareholders  
and
the  Trust and distributes dividends and  distributions payable by the Trust 
and
produces statements  with respect  to account  activity for  the Trust  and  
its
shareholders.  For these services, TSSG receives  a monthly fee based on 
average
annual assets and is reimbursed for out-of-pocket expenses.
    
 
   
DISTRIBUTORS
    
   
Lehman Brothers acts as distributor of the Fund's shares. The Fund's shares  
are
sold on a continuous basis by Lehman Brothers as agent. The distributor pays 
the
cost   of  printing  and  distributing  prospectuses  to  persons  who  are  
not
shareholders of the Fund (excluding preparation and printing expenses  
necessary
for the continued registration of the Fund's shares) and of preparing, 
printing,
and distributing all sales literature. No compensation is payable by the Fund 
to
Lehman Brothers for its distribution services.
    
 
   Lehman  Brothers  is comprised  of  several major  operating  business 
units.
Lehman Brothers Institutional Funds  Group is the  business group within  
Lehman
Brothers  that is primarily responsible for  the distribution and client 
service
requirements of the  Trust and its  shareholders. Lehman Brothers  
Institutional
Funds Group has been serving institutional clients' investment needs 
exclusively
for  more  than 20  years, emphasizing  high  quality individualized  service 
to
clients.
 
   
CUSTODIAN
    
 
   
Boston Safe Deposit and Trust Company ("Boston Safe"), a wholly owned 
subsidiary
of  The  Boston  Company,  Inc.,  is  located  at  One  Boston  Place,   
Boston,
Massachusetts  02108, and  serves as  the custodian of  the Trust  pursuant to 
a
custody agreement. Under  the custody  agreement, Boston Safe  holds the  
Fund's
portfolio  securities  and keeps  all necessary  accounts  and records.  For 
its
services, Boston Safe  receives a monthly  fee based upon  the month-end  
market
value  of securities  held in custody  and also  receives securities 
transaction
charges, including  out-of-pocket expenses.  The assets  of the  Trust are  
held
under bank custodianship in compliance with the 1940 Act.
    
 
SERVICE ORGANIZATIONS
 
   
As  stated in the Fund's Prospectus, the  Fund will enter into an agreement 
with
each financial institution  which may  purchase Class  C shares.  The Fund  
will
enter   into  an  agreement  with  each  Service  Organization  whose  
customers
("Customers") are the  beneficial owners  of Class  C shares  that requires  
the
Service  Organization to provide certain services to Customers. In 
consideration
of the Fund's payment of  .35% of the average daily  net asset value of Class  
C
shares  held by the Service Organization for  the benefit of its Customers. 
Such
services  include:  (i)  aggregating  and  processing  purchase  and  
redemption
requests  from Customers and placing net purchase and redemption orders with 
one
of the Fund's distributors; (ii) processing  dividend payments from the Fund  
on
behalf  of  Customers;  (iii) providing  information  periodically  to 
Customers
showing their positions in shares; (iv) arranging for bank wires; (v) 
responding
to Customer  inquiries  relating  to  the  services  performed  by  the  
Service
Organization   and   handling   correspondence;   (vi)   forwarding  
shareholder
communications from the Fund (such  as proxies, shareholder reports, annual  
and
semi-annual  financial statements and dividend, distribution and tax notices) 
to
Customers; (vii) acting as a shareholder of record or nominee; and (viii)  
other
similar  account administrative services, a  Service Organization at its 
option,
may also provide to its Customers of  Class C shares (a) a service that  
invests
the  assets of their  accounts in shares pursuant  to specific or pre-
authorized
instructions; (b)  provide sub-accounting  with respect  to shares  
beneficially
owned by Customers or the information necessary for
    
 
                                       24
<PAGE>
   
sub-accounting;  and  (c) provide  checkwriting  services. In  addition, 
Service
Organizations that  purchase Class  C  shares will  also provide  assistance  
in
connection  with  the support  of  the distribution  of  Class C  shares  to 
its
Customers, including marketing  assistance and  the forwarding  to Customers  
of
sales literature and advertising provided by a distributor of the shares.
    
 
   
   Holders  of Class B shares of the Fund will receive the services set forth 
in
(i) and (v)  and may  receive one or  more of  the services set  forth in  
(ii),
(iii),  (iv), (vi)  and (viii)  above. In  consideration of  the services  to 
be
rendered in connection with this Class of shares, the Fund will pay the  
Service
Organization  .25% of the  average daily net  asset value of  the Class B 
shares
held by the  Service Organization. A  Service Organization, at  its option,  
may
also  provide to its Customers of Class  B shares services including: (a) 
acting
as shareholder of record and as nominee; (b) providing Customers with a  
service
that  invests the  assets of  their accounts in  shares pursuant  to specific 
or
pre-authorized instruction; (c)  provide sub-accounting with  respect to  
shares
beneficially owned by Customers or the information necessary for sub-
accounting;
(d)  providing information periodically  to Customers showing  their position 
in
shares; (e) arranging for bank wires; (f) forwarding shareholder  
communications
from  the Fund  (such as  proxies, shareholder  reports, annual  and semi-
annual
financial statements and dividend, distribution  and tax notices) to  
Customers;
(g)  providing  reasonable assistance  in  connection with  the  distribution 
of
shares to Customers; and (h) providing  such other similar services as the  
Fund
may  reasonably request to the extent Service Organization is permitted to do 
so
under applicable statutes, rules, or regulations.
    
 
   The Fund's agreements with Service Organizations are governed by a plan  
(the
"Plan")  which has been adopted by the  Board of Trustees pursuant to 
applicable
rules and regulations  of the SEC  and an  exemptive order granted  by the  
SEC.
Under  the Plan, the  Board of Trustees  reviews, at least  quarterly, a 
written
report of  the  amounts  expended  under  the  Fund's  agreements  with  
Service
Organizations  and  the  purposes  for  which  the  expenditures  were  made. 
In
addition, the Fund's  arrangements with Service  Organizations must be  
approved
annually  by a  majority of  the Trust's trustees,  including a  majority of 
the
trustees who are not "interested  persons" of the Trust  as defined in the  
1940
Act  and have no direct or indirect financial interest in such arrangements 
(the
"Disinterested Trustees").
 
   The Board  of Trustees  has  approved the  Fund's arrangements  with  
Service
Organizations  based on information  provided by the  Fund's service 
contractors
that there is  a reasonable likelihood  that the arrangements  will benefit  
the
Fund  and  its  shareholders  by  affording  the  Fund  greater  flexibility  
in
connection with the servicing  of the accounts of  the beneficial owners of  
its
shares   in  an  efficient  manner.  Any   material  amendment  to  the  
Trust's
arrangements with Service Organizations  must be approved by  a majority of  
the
Trust's  Board of Trustees (including a majority of the Disinterested 
Trustees),
and any amendment to increase materially the costs under the Plan adopted by 
the
Board with respect  to the Class  B or Class  C shares must  be approved by  
the
holders  of a majority of the outstanding  shares of the relevant class. So 
long
as the  Fund's  arrangements  with  Service Organizations  are  in  effect,  
the
selection and nomination of the members of the Trust's Board of Trustees who 
are
not  "interested persons"  (as defined  in the  1940 Act)  of the  Trust will 
be
committed to the discretion of such non-interested trustees.
 
EXPENSES
 
The Fund's expenses include  taxes, interest, fees and  salaries of the  
Trust's
trustees and officers who are not directors, officers or employees of the 
Fund's
service  contractors, SEC  fees, state  securities qualification  fees, costs 
of
preparing and printing prospectuses for regulatory purposes and for 
distribution
to shareholders,
 
                                       25
<PAGE>
   
advisory, sub-advisory  and  administration  fees,  charges  of  the  
custodian,
transfer agent and dividend disbursing agent, Service Organization fees, 
certain
insurance  premiums, outside auditing  and legal expenses,  costs of 
independent
pricing service, costs of shareholder  reports and shareholder meetings and  
any
extraordinary  expenses. The Fund  also pays for  brokerage fees and 
commissions
(if any)  in connection  with the  purchase and  sale of  portfolio  
securities.
LBGAM,  and TSSG have agreed, that if, in any fiscal year, the expenses borne 
by
the Fund exceed  the applicable  expense limitations imposed  by the  
securities
regulations of any state in which shares of the Fund are registered or 
qualified
for  sale to the public,  they will reimburse the Fund  any excess to the 
extent
required  by  such   regulations.  Unless  otherwise   required  by  law,   
such
reimbursement  would be accrued and paid on the same basis that the advisory 
and
administration fees are accrued and paid  by the Fund. To the Fund's  
knowledge,
of the expense limitations in effect on the date of this Statement of 
Additional
Information,  none is more restrictive  than 2 1/2% of  the first $30 million 
of
the Fund's average annual net assets, 2% of the next $70 million of the  
average
annual net assets and 1 1/2% of the remaining average annual net assets.
    
 
ADDITIONAL INFORMATION CONCERNING TAXES
 
The following summarizes certain additional federal tax considerations 
generally
affecting  the Fund and  its shareholders that  are not described  in the 
Fund's
Prospectus. No attempt  is made  to present a  detailed explanation  of the  
tax
treatment  of the Fund or  its shareholders, and the  discussion here and in 
the
Fund's Prospectus is  not intended  as a  substitute for  careful tax  
planning.
Investors should consult their tax advisers with specific reference to their 
own
tax situations.
 
   The Fund is treated as a separate corporate entity under the Internal 
Revenue
Code  of 1986,  as amended (the  "Code") and  intends to qualify  as a 
regulated
investment company under the Code.
 
   As described above  and in  the Fund's Prospectus,  the Fund  is designed  
to
provide  New  York  institutional  investors and  their  customers  with 
current
tax-exempt interest income. The  Fund is not intended  to constitute a  
balanced
investment   program  and  is   not  designed  for   investors  seeking  
capital
appreciation or  maximum  tax-exempt  income  irrespective  of  fluctuations  
in
principal.  Shares of the Fund would not be suitable for tax-exempt 
institutions
and may not be suitable for retirement plans qualified under Section 401 of  
the
Code,  H.R. 10  plans and  individual retirement  accounts since  such plans 
and
accounts are generally tax-exempt  and, therefore, not only  would not gain  
any
additional  benefit  from  the  Fund's  dividends  being  tax-exempt,  but  
such
dividends would be ultimately taxable  to the beneficiaries when distributed  
to
them.  In addition, the Fund  may not be an  appropriate investment for 
entities
which are "substantial users" of  facilities financed by private activity  
bonds
or  "related persons" thereof. "Substantial user" is defined under U.S. 
Treasury
Regulations to include  a non-exempt person  who regularly uses  a part of  
such
facilities  in  his trade  or  business and  whose  gross revenues  derived 
with
respect to the facilities financed by the issuance of bonds are more than 5%  
of
the total revenues derived by all users of such facilities, or who occupies 
more
than  5% of the usable area of such  facilities or for whom such facilities or 
a
part thereof were specifically constructed, reconstructed or acquired.  
"Related
persons"  include certain  related natural  persons, affiliated  corporations, 
a
partnership and its partners and an S corporation and its shareholders.
 
   The percentage  of total  dividends paid  by  the Fund  with respect  to  
any
taxable year which qualify as federal exempt-interest dividends will be the 
same
for all shareholders receiving dividends during such year. In order for the 
Fund
to  pay exempt-interest dividends during any taxable  year, at the close of 
each
fiscal
 
                                       26
<PAGE>
quarter at least 50% of the aggregate value of the Fund's portfolio must 
consist
of  federal  tax-exempt  interest  obligations.  In  addition,  the  Fund   
must
distribute  an  amount that  is equal  to at  least the  sum of  90% of  its 
net
exempt-interest income and  90% of  its investment company  taxable income  
with
respect to each taxable year. After the close of its taxable year, the Fund 
will
notify  each shareholder of the portion of the dividends paid by the Fund to 
the
shareholder  with   respect  to   such  taxable   year  which   constitutes   
an
exempt-interest   dividend.  However,  the  aggregate  amount  of  dividends  
so
designated cannot exceed the  excess of the amount  of interest exempt from  
tax
under  Section 103 of the Code received by the Fund during the taxable year 
over
any amounts disallowed  as deductions under  Sections 265 and  171(a)(2) of  
the
Code.
 
   Interest  on indebtedness incurred by a shareholder to purchase or carry 
Fund
shares is not deductible for federal and New York State and City personal 
income
tax purposes  if  the  Fund distributes  exempt-interest  dividends  during  
the
shareholder's taxable year.
 
   While the Fund does not expect to earn any investment company taxable 
income,
any  such income earned by the Fund  will be distributed. In general, the 
Fund's
investment company taxable income will be  its taxable income (for example,  
its
short-term  capital  gains) subject  to  certain adjustments  and  excluding 
the
excess of any  net long-term  capital gain  for the  taxable year  over the  
net
short-term  capital loss, if  any, for such  year. To the  extent such income 
is
distributed, it will be taxable to shareholders as ordinary income (whether 
paid
in cash or additional shares).
 
   The Fund does  not expect to  realize long-term capital  gains and  
therefore
does not expect to distribute any capital gain dividends.
 
   Dividends  declared in October,  November or December of  any year payable 
to
shareholders of record on  a specified date  in such months  will be deemed  
for
federal  income tax purposes to have been  received by the shareholders and 
paid
by the Fund on December 31 of such year in the event such dividends are 
actually
paid during January of the following year.
 
   A 4% non-deductible excise tax  is imposed on regulated investment  
companies
that  fail to currently  distribute an amount equal  to specified percentages 
of
their ordinary taxable  income and capital  gain net income  (excess of  
capital
gains over capital losses). The Fund intends to make sufficient distributions 
or
deemed  distributions of  its ordinary taxable  income and any  capital gain 
net
income prior to the end of each calendar year to avoid liability for this 
excise
tax.
 
   
   Although the Fund  expects to qualify  each year as  a "regulated  
investment
company"  and to be relieved  of all or substantially  all federal income 
taxes,
depending upon the extent  of its activities in  states and localities in  
which
its  offices are maintained, in which  its agents or independent contractors 
are
located or in which it is otherwise  deemed to be conducting business, the  
Fund
may be subject to the tax laws of such states or localities.
    
 
   If  for any taxable  year the Fund  does not qualify  for the special 
federal
income tax treatment afforded regulated investment companies, all of its 
taxable
income will be subject to federal income tax at regular corporate rates 
(without
any deduction for distributions  to its shareholders).  In such event,  
dividend
distributions,   including   amounts   derived  from   interest   on  tax-
exempt
obligations, would  be taxable  to shareholders  to the  extent of  current  
and
accumulated  earnings  and  profits, and  would  be eligible  for  the 
dividends
received deduction for corporations.
 
                                       27
<PAGE>
   The Fund will be required in certain cases to withhold and remit to the  
U.S.
Treasury  31% of taxable dividends  or 31% of gross  proceeds realized upon 
sale
paid to shareholders  who have failed  to provide a  correct tax  
identification
number in the manner required, or who are subject to withholding by the 
Internal
Revenue  Service for  failure properly  to include  on their  return payments 
of
taxable interest or dividends, or  who have failed to  certify to the Fund  
that
they  are not subject to backup withholding when  required to do so or that 
they
are "exempt recipients."
 
   The foregoing discussion is based on  federal tax laws and regulations  
which
are in effect on the date of this Statement of Additional Information; such 
laws
and  regulations  may  be  changed  by  legislative  or  administrative  
action.
Shareholders  are  advised  to  consult   their  tax  advisers  concerning   
the
application of state and local taxes.
 
DIVIDENDS
 
Net  income for dividend purposes consists  of (i) interest accrued and 
original
discount earned on the  Fund's assets for the  applicable dividend period,  
less
(ii)  amortization of market  premium on such  assets, accrued expenses 
directly
attributable to the Fund, and the general expenses (E.G., legal, accounting  
and
trustees'  fees) of the Trust prorated to the  Fund on the basis of its 
relative
net assets. The  amortization of  market discount on  the Fund's  assets is  
not
included in the calculation of net income.
 
   Realized  and  unrealized  gains  and  losses  on  portfolio  securities  
are
reflected in net asset value. In addition, the Fund's Class B and Class C 
shares
bear exclusively the expense of fees paid to Service Organizations with  
respect
to    each   such   Class   of   shares.   See   "MANAGEMENT   OF   THE   
FUND--
SERVICE ORGANIZATIONS".
 
   As stated, the Trust uses  its best efforts to  maintain the net asset  
value
per  share of the Fund at $1.00 As a result of a significant expense or 
realized
or unrealized loss  incurred by the  Fund, it  is possible that  the Fund's  
net
asset value per share may fall below $1.00.
 
ADDITIONAL YIELD INFORMATION
 
The  "yields,"  "effective yields"  and  "tax-equivalent yields"  are 
calculated
separately for each  Class of the  Fund's shares. The  seven-day yield for  
each
Class  of shares in the Fund is calculated  by determining the net change in 
the
value of a hypothetical preexisting account in the Fund having a balance of  
one
share  of the Class  involved at the  beginning of the  period, dividing the 
net
change by the value of the account at the beginning of the period to obtain  
the
base  period return, and  multiplying the base  period return by  365/7. The 
net
change in the value of an account  in the Fund includes the value of  
additional
shares  purchased with dividends from the  original share and dividends 
declared
on the original share and any such additional shares, net of all fees charged 
to
all shareholder accounts in proportion to the length of the base period and  
the
Fund's average account size, but does not include gains and losses or 
unrealized
appreciation and depreciation. In addition, the effective yield is calculated 
by
compounding  the unannualized base  period return for  each Class (calculated 
as
described above) by adding one to the base period return for the Fund  
involved,
raising that sum to a power equal to 365/7, and subtracting one from the 
result.
A  tax-equivalent yield for each Class of  the Fund's shares is computed by: 
(a)
dividing the portion of  the Fund's yield (calculated  as above) that is  
exempt
from both federal and New York State income taxes by one minus a stated 
combined
federal  and New  York State income  tax rate;  (b) dividing the  portion of 
the
Fund's yield
 
                                       28
<PAGE>
(calculated as above) that is exempt from federal income tax only by one minus 
a
stated federal income tax  rate; and (c) adding  the figures resulting from  
(a)
and  (b) above to that portion,  if any, of the Fund's  yield that is not 
exempt
from federal income tax. Similarly,  based on the calculations described  
above,
30-day  (or one  month) yields, effective  yields and  tax-equivalent yields 
may
also be calculated.
 
   From time  to time,  in advertisements  or in  reports to  shareholders,  
the
yields  of the Fund  may be quoted and  compared to those  of other mutual 
funds
with similar investment objectives and to  stock or other relevant indices.  
For
example,  the  yields of  the  Fund may  be  compared to  Donoghue's  MONEY 
FUND
AVERAGE, which  is an  average  compiled by  Donoghue's  MONEY FUND  REPORT7  
of
Holliston,  MA 01746, a widely  recognized independent publication that 
monitors
the performance  of  money market  funds,  or to  the  data prepared  by  
Lipper
Analytical  Services, Inc. ("Lippers"),  a widely-recognized independent 
service
that monitors the performance of mutual funds.
 
   Yields will fluctuate, and any quotation of yield should not be considered 
as
representative of the future  performance of the  Fund. Since yields  
fluctuate,
yield  data cannot necessarily  be used to  compare an investment  in the 
Fund's
shares with bank deposits, savings accounts and similar investment  
alternatives
which  often provide an agreed or guaranteed  fixed yield for a stated period 
of
time. Shareholders should  remember that yield  is generally a  function of  
the
kind  and quality  of the investments  held in a  portfolio, portfolio 
maturity,
operating expenses and  market conditions. Any  fees charged by  banks or  
other
financial institutions to customer accounts investing in shares of the Fund 
will
not  be included  in calculations  of yield; such  fees would  reduce the 
actual
yield from that quoted.
 
ADDITIONAL DESCRIPTION CONCERNING SHARES
 
The Trust does  not presently  intend to  hold annual  meetings of  
shareholders
except  as  required by  the 1940  Act or  other applicable  law. The  law 
under
certain circumstances provides shareholders with the right to call for a 
meeting
of shareholders to consider the removal of  one or more trustees. To the  
extent
required  by the law, the Trust will assist in shareholder communication in 
such
matters.
 
   As stated in the Fund's Prospectus, holders  of shares in the Fund will  
vote
in  the  aggregate and  not  by class  or series  on  all matters,  except 
where
otherwise required by law and except that only the Fund's Class B shares will 
be
entitled to vote on  matters submitted to a  vote of shareholders pertaining  
to
the  Fund's  arrangements with  Service Organizations  with  respect to  Class 
B
shares and only Class C shares will be entitled to vote on matters submitted  
to
a  vote  of  shareholders pertaining  to  the Fund's  arrangements  with 
Service
Organizations with respect to  Class C shares. (See  "Management of the Fund  
--
Service  Organizations.") Further, shareholders of all of the Trust's 
portfolios
will vote in the aggregate and not by portfolio except as otherwise required  
by
law  or when the Board  of Trustees determines that the  matter to be voted 
upon
affects only the interests of the  shareholders of a particular portfolio.  
Rule
18f-2  under the 1940 Act  provides that any matter  required to be submitted 
by
the provisions of such Act or applicable state law, or otherwise, to the 
holders
of the outstanding securities of an  investment company such as the Trust  
shall
not be deemed to have been effectively acted upon unless approved by the 
holders
of  a  majority of  the outstanding  shares  of each  portfolio affected  by 
the
matter. Rule  18f-2 further  provides that  a portfolio  shall be  deemed to  
be
affected  by a matter unless it is clear that the interests of each portfolio 
in
the matter are identical or that the matter does not affect any interest of  
the
portfolio.  Under the Rule  the approval of an  investment advisory agreement 
or
any change in a  fundamental investment policy would  be effectively acted  
upon
with respect to a portfolio only if approved by the holders of a majority of 
the
outstanding voting
 
                                       29
<PAGE>
securities  of  such  portfolio.  However,  the  Rule  also  provides  that  
the
ratification of the selection of  independent certified public accountants,  
the
approval  of principal underwriting  contracts and the  election of trustees 
are
not subject to  the separate voting  requirements and may  be effectively  
acted
upon  by  shareholders  of  the  investment  company  voting  without  regard 
to
portfolio.
 
COUNSEL
 
   
Willkie Farr & Gallagher, One Citicorp  Center, 153 East 53rd Street, New  
York,
New  York 10022, serves as counsel for the Trust and will pass upon the 
legality
of the shares offered hereby. Willkie Farr & Gallagher also serves as counsel 
to
Lehman Brothers.
    
 
AUDITORS
 
   
Ernst & Young, independent auditors, serve as auditors to the Fund and render 
an
opinion on the Fund's financial statements  annually. Ernst & Young has  
offices
at 200 Claredon Street, Boston, Massachusetts 02116-5072.
    
 
   
FINANCIAL STATEMENTS
    
 
   
The  Trust's  Annual Report  for the  fiscal  period ended  January 31,  1994 
is
incorporated into this Statement of  Additional Information by reference in  
its
entirety.
    
 
MISCELLANEOUS
SHAREHOLDER VOTE
 
As used in this Statement of Additional Information and the Fund's Prospectus, 
a
"majority of the outstanding shares" of the Fund or of any other portfolio 
means
the  lesser of (1) 67%  of the Fund's share, (irrespective  of class), or of 
the
portfolio represented at a meeting at which the holders of more than 50% of  
the
outstanding  shares of the  Fund or such  portfolio are present  in person or 
by
proxy, or (2) more  than 50% of the  Fund's outstanding shares (irrespective  
of
class) or of the portfolio.
 
SHAREHOLDER AND TRUSTEE LIABILITY
 
The  Trust  is  organized as  a  trust under  the  laws of  the  Commonwealth 
of
Massachusetts. Shareholders of such a trust may, under certain circumstances, 
be
held personally liable  (as if they  were partners) for  the obligations of  
the
trust.  The Declaration of  Trust of the Trust  provides that shareholders 
shall
not be subject  to any personal  liability for  the acts or  obligations of  
the
Trust  and that every note,  bond, contract, order or  other undertaking made 
by
the Trust shall contain a provision to the effect that the shareholders are  
not
personally   liable   thereunder.  The   Declaration   of  Trust   provides  
for
indemnification out of the trust property of the Fund of any shareholder of  
the
Fund  held  personally  liable  solely  by reason  of  being  or  having  been 
a
shareholder and not because of any acts  or omissions or some other reason.  
The
Declaration  of Trust also  provides that the Trust  shall, upon request, 
assume
the defense of any claim made against any shareholder for any act or  
obligation
of  the  Trust  and satisfy  any  judgment thereon.  Thus,  the risk  of  a 
Fund
shareholder's incurring financial loss beyond the amount invested on account  
of
shareholder liability is limited to circumstances in which the Fund itself 
would
be unable to meet its obligations.
 
                                       30
<PAGE>
   The  Trust's Declaration  of Trust  provides further  that no  trustee of 
the
Trust shall be personally liable for or on account of any contract, debt,  
tort,
claim,  damage,  judgment  or  decree  arising  out  of  or  connected  with 
the
administration or  preservation  of the  trust  estate  or the  conduct  of  
any
business  of the Trust, nor shall any trustee be personally liable to any 
person
for any  action  or failure  to  act except  by  reason of  bad  faith,  
willful
misfeasance,  gross negligence  in performing duties,  or by  reason of 
reckless
disregard for the obligations and duties  as trustee. It also provides that  
all
persons  having any claim against the trustees or the Trust shall look solely 
to
the trust property for payment. With  the exceptions stated, the Declaration  
of
Trust  provides  that  a  trustee  is entitled  to  be  indemnified  against 
all
liabilities and expenses reasonably incurred  in connection with the defense  
or
disposition  of any proceeding  in which the  trustee may be  involved or may 
be
threatened with  by reason  of being  or having  been a  trustee, and  that  
the
trustees  have the power, but not the  duty, to indemnify officers and 
employees
of the Trust  unless such persons  would not be  entitled to indemnification  
if
they were in the position of trustee.
 
                                       31
<PAGE>
APPENDIX
DESCRIPTION OF MUNICIPAL SECURITIES RATINGS
 
COMMERCIAL PAPER RATINGS
 
A  Standard &  Poor's commercial  paper rating  is a  current assessment  of 
the
likelihood of timely payment of debt having an original maturity of no more 
than
365 days. The following  summarizes the rating categories  used by Standard  
and
Poor's for commercial paper:
 
   "A-1"  -- Issue's degree of safety  regarding timely payment is strong. 
Those
issues determined to possess extremely strong safety characteristics are 
denoted
"A-1+."
 
   "A-2" -- Issue's capacity  for timely payment  is satisfactory. However,  
the
relative degree of safety is not as high as for issues designated "A-1."
 
   "A-3"  -- Issue has an adequate capacity  for timely payment. It is, 
however,
somewhat more vulnerable  to the  adverse effects of  changes and  
circumstances
than an obligation carrying a higher designation.
 
   "B" -- Issue has only a speculative capacity for timely payment.
 
   "C" -- Issue has a doubtful capacity for payment.
 
   "D" -- Issue is in payment default.
 
   Moody's  commercial paper ratings  are opinions of the  ability of issuers 
to
repay punctually  promissory  obligations not  having  an original  maturity  
in
excess  of  9 months.  The following  summarizes the  rating categories  used 
by
Moody's for commercial paper:
 
   "PRIME-1" -- Issuer or related supporting institutions are considered to 
have
a  superior  capacity  for  repayment  of  short-term  promissory   
obligations.
Principal  repayment  capacity  will  normally  be  evidenced  by  the 
following
characteristics: leading market positions  in well established industries;  
high
rates  of return on funds  employed; conservative capitalization structures 
with
moderate reliance on debt and ample  asset protection; broad margins in  
earning
coverage  of fixed financial charges and high internal cash generation; and 
well
established access  to a  range  of financial  markets  and assured  sources  
of
alternate liquidity.
 
   "PRIME-2" -- Issuer or related supporting institutions are considered to 
have
a  strong capacity for repayment of short-term promissory obligations. This 
will
normally be evidenced by many of the characteristics cited above but to a 
lesser
degree. Earnings trends and coverage ratios,  while sound, will be more  
subject
to  variation. Capitalization  characteristics, while still  appropriate, may 
be
more affected by external conditions. Ample alternative liquidity is 
maintained.
 
   "PRIME-3" -- Issuer  or related  supporting institutions  have an  
acceptable
capacity  for  repayment of  short-term promissory  obligations. The  effects 
of
industry  characteristics  and  market  composition  may  be  more   
pronounced.
Variability  in earnings and profitability may result in changes in the level 
of
debt protection measurements and the  requirement for relatively high  
financial
leverage. Adequate alternate liquidity is maintained.
 
                                      A-1
<PAGE>
   "NOT  PRIME"  --  Issuer  does  not  fall  within  any  of  the  Prime 
rating
categories.
 
   The three rating categories of Duff & Phelps for investment grade  
commercial
paper  are  "Duff  1,"  "Duff 2"  and  "Duff  3." Duff  &  Phelps  employs 
three
designations, "Duff  1+," "Duff  1" and  "Duff 1-,"  within the  highest  
rating
category.  The following summarizes the rating  categories used by Duff & 
Phelps
for commercial paper:
 
   "DUFF 1+" -- Debt possesses  highest certainty of timely payment.  Short-
term
liquidity,  including internal  operating factors  and/or access  to 
alternative
sources of  funds, is  outstanding,  and safety  is  just below  risk-free  
U.S.
Treasury short-term obligations.
 
   "DUFF  1" -- Debt possesses very  high certainty of timely payment. 
Liquidity
factors are excellent and supported by good fundamental protection factors. 
Risk
factors are minor.
 
   "DUFF 1-"  -- Debt  possesses  high certainty  of timely  payment.  
Liquidity
factors  are strong and  supported by good  fundamental protection factors. 
Risk
factors are very small.
 
   "DUFF 2"  --  Debt possesses  good  certainty of  timely  payment.  
Liquidity
factors  and company fundamentals are sound.  Although ongoing funding needs 
may
enlarge total financing requirements,  access to capital  markets is good.  
Risk
factors are small.
 
   "DUFF  3"  -- Debt  possesses  satisfactory liquidity,  and  other 
protection
factors qualify issue as investment grade.  Risk factors are larger and  
subject
to more variation. Nevertheless, timely payment is expected.
 
   "DUFF 4" -- Debt possesses speculative investment characteristics.
 
   "DUFF  5" --  Issuer has failed  to meet scheduled  principal and/or 
interest
payments.
 
   Fitch short-term ratings apply to debt obligations that are payable on 
demand
or have original maturities of up  to three years. The following summarizes  
the
rating categories used by Fitch for short-term obligations:
 
   "F-1+"  --  Securities possess  exceptionally  strong credit  quality. 
Issues
assigned this rating are  regarded as having the  strongest degree of  
assurance
for timely payment.
 
   "F-1"  -- Securities possess very strong credit quality. Issues assigned 
this
rating reflect an assurance of timely payment only slightly less in degree  
than
issues rated "F-1+."
 
   "F-2"  -- Securities possess good credit quality. Issues carrying this 
rating
have a satisfactory degree  of assurance for timely  payment, but the margin  
of
safety is not as great as the "F-1+" and "F-1" categories.
 
   "F-3"  -- Securities possess fair credit quality. Issues assigned this 
rating
have characteristics suggesting that the degree of assurance for timely  
payment
is  adequate; however, near-term adverse changes could cause those securities 
to
be rated below investment grade.
 
   "F-S" -- Securities possess weak credit quality. Issues assigned this  
rating
have characteristics suggesting a minimal degree of assurance for timely 
payment
and  are  vulnerable  to near-term  adverse  changes in  financial  and 
economic
conditions.
 
   "D" -- Securities are in actual or imminent payment default.
 
                                      A-2
<PAGE>
   Fitch may also use the symbol  "LOC" with its short-term ratings to  
indicate
that the rating is based upon a letter of credit issued by a commercial bank.
 
CORPORATE AND MUNICIPAL LONG-TERM DEBT RATINGS
 
The following summarizes the ratings used by Standard & Poor's for corporate 
and
municipal debt:
 
   AAA  -- This designation represents the highest rating assigned by Standard 
&
Poor's to a debt  obligation and indicates an  extremely strong capacity to  
pay
interest and repay principal.
 
   AA  -- Debt is considered to have a  very strong capacity to pay interest 
and
repay principal and differs from AAA issues only in small degree.
 
   A -- Debt is considered to have  a strong capacity to pay interest and  
repay
principal  although such  issues are  somewhat more  susceptible to  the 
adverse
effects of  changes  in  circumstances  and economic  conditions  than  debt  
in
higher-rated categories.
 
   BBB  -- Debt is regarded  as having an adequate  capacity to pay interest 
and
repay principal.  Whereas  such  issues  normally  exhibit  adequate  
protection
parameters,  adverse  economic  conditions or  changing  circumstances  are 
more
likely to lead to a  weakened capacity to pay  interest and repay principal  
for
debt in this category than in higher-rated categories.
 
   BB,  B,  CCC, CC,  AND  C --  Debt  that possesses  one  of these  ratings 
is
regarded, on balance, as predominantly  speculative with respect to capacity  
to
pay interest and repay principal in accordance with the terms of the 
obligation.
"BB"  indicates the lowest degree  of speculation and "C"  the highest degree 
of
speculation. While  such  debt will  likely  have some  quality  and  
protective
characteristics,  these  are outweighed  by  large uncertainties  or  major 
risk
exposures to adverse conditions.
 
   CI -- This rating is reserved for income bonds on which no interest is  
being
paid.
 
   D  --  Debt  is in  default,  and  payment of  interest  and/or  repayment 
of
principal is in arrears.
 
   PLUS (+) OR MINUS (-) -- The ratings from "AA" through "CCC" may be  
modified
by  the addition of  a plus or minus  sign to show  relative standing within 
the
major rating categories.
 
   The following  summarizes  the ratings  used  by Moody's  for  corporate  
and
municipal long-term debt:
 
   AAA  -- Bonds are judged  to be of the best  quality. They carry the 
smallest
degree of investment risk and are generally referred to as "gilt edge." 
Interest
payments are  protected by  a large  or by  an exceptionally  stable margin  
and
principal is secure. While the various protective elements are likely to 
change,
such  changes as can be visualized are most unlikely to impair the 
fundamentally
strong position of such issues.
 
   AA -- Bonds are judged to be of high quality by all standards. Together  
with
the "Aaa" group they comprise what are generally known as high grade bonds. 
They
are  rated lower than the best bonds because margins of protection may not be 
as
large as in  "Aaa" securities or  fluctuation of protective  elements may be  
of
greater  amplitude  or  there  may  be other  elements  present  which  make 
the
long-term risks appear somewhat larger than in "Aaa" securities.
 
                                      A-3
<PAGE>
   A --  Bonds  possess many  favorable  investment  attributes and  are  to  
be
considered  as  upper  medium  grade  obligations.  Factors  giving  security 
to
principal and interest are considered adequate but elements may be present 
which
suggest a susceptibility to impairment sometime in the future.
 
   BAA --  Bonds considered  medium-grade obligations,  I.E., they  are  
neither
highly  protected nor poorly  secured. Interest payments  and principal 
security
appear adequate for the present but  certain protective elements may be  
lacking
or  may be  characteristically unreliable  over any  great length  of time. 
Such
bonds lack outstanding investment characteristics  and in fact have  
speculative
characteristics as well.
 
   BA,  B, CAA,  CA, AND C  -- Bonds that  possess one of  these ratings 
provide
questionable  protection  of  interest   and  principal  ("Ba"  indicates   
some
speculative  elements;  "B"  indicates  a  general  lack  of  characteristics 
of
desirable  investment;  "Caa"  represents  a  poor  standing;  "Ca"   
represents
obligations  which  are speculative  in a  high degree;  and "C"  represents 
the
lowest rated class of bonds). "Caa," "Ca" and "C" bonds may be in default.
 
   CON. (---) --  Bonds for which  the security depends  upon the completion  
of
some act or the fulfillment of some condition are rated conditionally. These 
are
bonds  secured by (a)  earnings of projects under  construction, (b) earnings 
of
projects unseasoned  in  operation  experience, (c)  rentals  which  begin  
when
facilities are completed, or (d) payments to which some other limiting 
condition
attaches.  Parenthetical rating denotes probable  credit stature upon 
completion
of construction or elimination of basis of condition.
 
   Moody's applies numerical modifiers 1, 2 and 3 in each generic 
classification
from "Aa" to "B" in  its bond rating system. The  modifier 1 indicates that  
the
security  ranks in the higher end of its generic rating category; the modifier 
2
indicates a mid-range ranking; and the modifier 3 indicates that the issue 
ranks
at the lower end of its generic rating category.
 
   The following summarizes the ratings used by Duff & Phelps for corporate  
and
municipal long-term debt:
 
   AAA  -- Debt  is considered  to be  of the  highest credit  quality. The 
risk
factors are  negligible,  being  only  slightly more  than  for  risk-free  
U.S.
Treasury debt.
 
   AA  --  Debt is  considered of  high credit  quality. Protection  factors 
are
strong. Risk  is modest  but may  vary slightly  from time  to time  because  
of
economic conditions.
 
   A  --  Debt  possesses protection  factors  which are  average  but 
adequate.
However, risk  factors are  more variable  and greater  in periods  of  
economic
stress.
 
   BBB  -- Debt possesses  below average Protection  factors but such 
protection
factors are  still considered  sufficient for  prudent investment.  
Considerable
variability in risk is present during economic cycles.
 
   BB,  B,  CCC, DD,  AND DP  -- Debt  that  possesses one  of these  ratings 
is
considered to be below investment  grade. Although below investment grade,  
debt
rated  "BB"  is deemed  likely  to meet  obligations  when due.  Debt  rated 
"B"
possesses the risk that obligations will not  be met when due. Debt rated  
"CCC"
is  well below  investment grade and  has considerable uncertainty  as to 
timely
payment of principal,  interest or  preferred dividends.  Debt rated  "DD" is  
a
defaulted  debt obligation, and the rating  "DP" represents preferred stock 
with
dividend arrearages.
 
                                      A-4
<PAGE>
   To provide more detailed indications of credit quality, the "AA," "A," 
"BBB,"
"BB" and "B" ratings may be modified by the addition of a plus (+) or minus  
(-)
sign to show relative standing within these major categories.
 
   The following summarizes the highest four ratings used by Fitch for 
corporate
and municipal bonds:
 
   AAA  -- Bonds  considered to  be investment grade  and of  the highest 
credit
quality. The obligor  has an exceptionally  strong ability to  pay interest  
and
repay  principal, which  is unlikely  to be  affected by  reasonably 
foreseeable
events.
 
   AA --  Bonds  considered to  be  investment grade  and  of very  high  
credit
quality.  The  obligor's ability  to pay  interest and  repay principal  is 
very
strong, although not quite as strong  as bonds rated "AAA." Because bonds  
rated
in the "AAA" and "AA" categories are not significantly vulnerable to 
foreseeable
future developments, short-term debt of these issuers is generally rated "F-
1+."
 
   A  -- Bonds considered to be investment grade and of high credit quality. 
The
obligor's ability  to pay  interest  and repay  principal  is considered  to  
be
strong, but may be more vulnerable to adverse changes in economic conditions 
and
circumstances than bonds with higher ratings.
 
   BBB  -- Bonds  considered to be  investment grade and  of satisfactory 
credit
quality. The obligor's ability to pay interest and repay principal is 
considered
to be  adequate.  Adverse  changes in  economic  conditions  and  
circumstances,
however,  are  more  likely  to  have an  adverse  impact  on  these  bonds, 
and
therefore, impair timely payment. The likelihood that the ratings of these 
bonds
will fall below investment grade is higher than for bonds with higher ratings.
 
   BB, B, CCC, CC, C, DDD, DD, AND D -- Bonds that possess one of these  
ratings
are  considered by Fitch to be speculative  investments. The ratings "BB" to 
"C"
represent Fitch's assessment of  the likelihood of  timely payment of  
principal
and  interest in accordance with the terms  of obligation for bond issues not 
in
default. For defaulted bonds, the  rating "DDD" to "D"  is an assessment of  
the
ultimate recovery value through reorganization or liquidation.
 
   To  provide more  detailed indications of  credit quality,  the Fitch 
ratings
from and including "AA" to "C" may be modified by the addition of a plus (+)  
or
minus (-) sign to show relative standing within these major rating categories.
 
MUNICIPAL NOTE RATINGS
 
A  Standard and Poor's rating reflects  the liquidity concerns and market 
access
risks unique to notes due in three  years or less. The following summarizes  
the
ratings used by Standard & Poor's Corporation for municipal notes:
 
   SP-1  -- The issuers of  these municipal notes exhibit  very strong or 
strong
capacity to  pay principal  and  interest. Those  issues determined  to  
possess
overwhelming safety characteristics are given a plus (+) designation.
 
   SP-2 -- The issuers of these municipal notes exhibit satisfactory capacity 
to
pay principal and interest.
 
   SP-3  -- The issuers of these municipal notes exhibit speculative capacity 
to
pay principal and interest.
 
                                      A-5
<PAGE>
   Moody's ratings for state and municipal notes and other short-term loans  
are
designated Moody's Investment Grade ("MIG") and variable rate demand 
obligations
are   designated  Variable  Moody's  Investment  Grade  ("VMIG").  Such  
ratings
recognize the differences between short-term credit risk and long-term risk. 
The
following  summarizes  the  ratings  by  Moody's  Investors  Service,  Inc.  
for
short-term notes:
 
   MIG-1/VMIG-1  --  Loans bearing  this designation  are  of the  best 
quality,
enjoying strong protection by established cash flows, superior liquidity 
support
or demonstrated broad-based access to the market for refinancing.
 
   MIG-2/VMIG-2 --  Loans bearing  this designation  are of  high quality,  
with
margins of protection ample although not so large as in the preceding group.
 
   MIG-3/VMIG-3 -- Loans bearing this designation are of favorable quality, 
with
all  security elements accounted for but  lacking the undeniable strength of 
the
preceding grades. Liquidity and  cash flow protection may  be narrow and  
market
access for refinancing is likely to be less well established.
 
   MIG-4/VMIG-4  --  Loans bearing  this  designation are  of  adequate 
quality,
carrying specific risk but having protection commonly regarded as required of 
an
investment security and not distinctly or predominantly speculative.
 
   SG -- Loans  bearing this  designation are  of speculative  quality and  
lack
margins of protection.
 
   Fitch  uses the short-term  ratings described under  Commercial Paper 
Ratings
for municipal notes.
 
                                      A-6


<PAGE>
   
CALIFORNIA MUNICIPAL MONEY MARKET FUND
LEHMAN BROTHERS INSTITUTIONAL FUNDS GROUP TRUST
    
 
<TABLE>
<S>                                        <C>
   STATEMENT OF ADDITIONAL INFORMATION
</TABLE>
 
   
                                                                    MAY __, 
1994
    
 
   
   This  Statement of Additional Information is  meant to be read in 
conjunction
with the Prospectus for  the California Municipal  Money Market Fund  
portfolio,
dated  May  __,  1994 as  amended  or supplemented  from  time to  time,  and 
is
incorporated by  reference in  its entirety  into the  Prospectus. Because  
this
Statement of Additional Information is not itself a prospectus, no investment 
in
shares  of the California  Municipal Money Market Fund  portfolio should be 
made
solely upon  the information  contained  herein. Copies  of the  Prospectus  
for
shares  may be obtained by calling  Lehman Brothers Inc. ("Lehman Brothers"), 
at
1-800-368-5556. Capitalized  terms used  but not  defined herein  have the  
same
meanings as in the Prospectus.
    
 
TABLE OF CONTENTS
 
   
<TABLE>
<CAPTION>
                                                                                                               
PAGE
                                                                                                             
---------
<S>                                                                                                          
<C>
The 
Trust.........................................................................
.........................          2
Investment Objective and 
Policies......................................................................
....          2
Municipal 
Obligations...................................................................
...................          7
Additional Purchase and Redemption 
Information.............................................................         
18
Management of the 
Fund..........................................................................
...........         20
Additional Information Concerning 
Taxes....................................................................         
26
Dividends.....................................................................
.............................         29
Additional Yield 
Information...................................................................
............         29
Additional Description Concerning 
Shares...................................................................         
31
Counsel.......................................................................
.............................         31
Auditors......................................................................
.............................         31
Financial 
Statements....................................................................
...................         32
Miscellaneous.................................................................
.............................         32
Appendix......................................................................
.............................        A-1
</TABLE>
    
<PAGE>
THE TRUST
 
   
Lehman  Brothers Institutional  Funds Group  Trust (the  "Trust") is  a no-
load,
open-end management investment company. The Trust currently includes a family 
of
money market  and  non-money  market  portfolios, one  of  which  is  
California
Municipal  Money Market Fund  (the "Fund"). The Fund  is currently authorized 
to
offer three classes of shares. Each class represents an equal, PRO RATA 
interest
in the Fund. Each share accrues daily dividends in the same manner, except  
that
Class  B and Class C Shares bear fees  payable by the Fund to Lehman Brothers 
or
institutional investors for services  they provide to  the beneficial owners  
of
such shares.
    
 
   
   THIS  STATEMENT OF  ADDITIONAL INFORMATION  AND THE  FUND'S PROSPECTUS 
RELATE
PRIMARILY TO THE FUND AND DESCRIBE  ONLY THE INVESTMENT OBJECTIVE AND  
POLICIES,
OPERATIONS,  CONTRACTS AND OTHER MATTERS RELATING TO THE FUND. INVESTORS 
WISHING
TO OBTAIN SIMILAR INFORMATION REGARDING THE TRUST'S OTHER PORTFOLIOS MAY  
OBTAIN
SEPARATE   PROSPECTUSES  DESCRIBING  THEM  BY   CONTACTING  LEHMAN  BROTHERS  
AT
1-800-368-5556.
    
 
INVESTMENT OBJECTIVE AND POLICIES
 
As stated in the Fund's Prospectus, the  investment objective of the Fund is  
to
provide as high a level of current income exempt from federal income tax and, 
to
the  extent possible, from California state personal income tax as is 
consistent
with the  preservation  of capital  and  relative stability  of  principal.  
The
following policies supplement the description of the Fund's investment 
objective
and policies in the Prospectus.
 
   
   The  Fund  is  managed  to  provide  stability  of  capital  while  
achieving
competitive yields. The investment adviser  intends to follow a  value-
oriented,
research-driven and risk-averse investment strategy, engaging in a full range 
of
economic,   strategic,  credit  and   market-specific  analyses  in  
researching
potential investment opportunities.
    
 
   
PORTFOLIO TRANSACTIONS
    
   
Subject to  the general  control of  the Trust's  Board of  Trustees and  
Lehman
Brothers  Global Asset Management Inc. ("LBGAM"), the Fund's investment 
adviser,
is responsible for, makes  decisions with respect to  and places orders for  
all
purchases  and sales of portfolio securities for the Fund. Purchases are 
usually
principal  transactions  without  brokerage  commissions.  In  making  
portfolio
investments,  LBGAM seeks to  obtain the best  net price and  the most 
favorable
execution of orders. To the extent that the execution and price offered by  
more
than   one  dealer  are  comparable,  LBGAM   may,  in  its  discretion,  
effect
transactions in portfolio  securities with  dealers who provide  the Trust  
with
research advice or other services.
    
 
   
   Investment  decisions for the Fund are  made independently from those for 
the
Trust's other  portfolios or  other investment  company portfolios  or  
accounts
advised  by LBGAM.  Such other investment  company portfolios may  invest in 
the
same securities as the Fund.  When purchases or sales  of the same security  
are
made  at substantially the same time on  behalf of such other investment 
company
portfolios, transactions are  averaged as  to price,  and available  
investments
allocated as to amount, in a manner which LBGAM believes to be equitable to 
each
investment  company  portfolio,  including  the Fund.  In  some  instances, 
this
investment procedure may adversely affect the price paid or received by the 
Fund
or the size of the position
    
 
                                       2
<PAGE>
   
obtained for the Fund. To the extent  permitted by law, LBGAM may aggregate  
the
securities  to  be sold  or purchased  for the  Fund  with those  to be  sold 
or
purchased for such other investment companies in order to obtain best 
execution.
    
 
   
   Portfolio securities will not be purchased from or sold to and the Fund  
will
not  enter  into  repurchase  agreements  with  Lehman  Brothers  Inc.  
("Lehman
Brothers"), LBGAM, or  any affiliated  person (as such  term is  defined in  
the
Investment  Company Act  of 1940,  as amended (the  "1940 Act")),  except to 
the
extent permitted by the Securities and Exchange Commission ("SEC"). In 
addition,
the Fund will  not purchase Municipal  Obligations during the  existence of  
any
underwriting  or selling group relating thereto  of which Lehman Brothers or 
any
affiliate thereof is a member, except to the extent permitted by the SEC.  
Under
certain  circumstances,  the Fund  may  be at  a  disadvantage because  of 
these
limitations in comparison with other investment company portfolios which have  
a
similar   investment  objective  but  are   not  subject  to  such  
limitations.
Furthermore, with respect  to such  transactions, securities  and deposits,  
the
Fund will not give preference to Service Organizations with whom the Fund 
enters
into  agreements relating  to Class  B or  Class C  shares. See  the 
Prospectus,
"Management of the Fund--Service Organizations."
    
 
   
   The Fund  may  participate, if  and  when  practicable, in  bidding  for  
the
purchase  of  Municipal Obligations  directly from  an issuer  in order  to 
take
advantage of the lower purchase price  available to members of a bidding  
group.
The  Fund will engage  in this practice,  however, only when  LBGAM, in its 
sole
discretion, believes such practice to be otherwise in the Fund's interests.
    
 
   
   The Fund does  not intend  to seek  profits through  short-term trading.  
The
Fund's  annual portfolio turnover is  not expected to have  a material effect 
on
its net  income.  The Fund's  portfolio  turnover is  expected  to be  zero  
for
regulatory reporting purposes.
    
 
ADDITIONAL INFORMATION ON INVESTMENT PRACTICES
 
    VARIABLE  AND FLOATING RATE INSTRUMENTS.  Municipal Obligations purchased 
by
the Fund may include variable and  floating rate instruments, which provide  
for
adjustments  in the interest rate on certain reset dates or whenever a 
specified
interest  rate  index   changes,  respectively.  Variable   and  floating   
rate
instruments  are  subject  to  the credit  quality  standards  described  in 
the
Prospectus. In some cases the  Fund may require that  the obligation to pay  
the
principal  of  the  instrument  be backed  by  a  letter or  line  of  credit 
or
guarantee. Such instruments may  carry stated maturities in  excess of 397  
days
provided  that the maturity-shortening provisions stated  in Rule 2a-7 under 
the
1940 Act are satisfied. Although a  particular variable or floating rate  
demand
instrument  may not be actively traded in a secondary market, in some cases, 
the
Fund may be entitled to principal on demand and may be able to resell such 
notes
in the dealer market.
 
   
   Variable and  floating rate  demand instruments  held by  the Fund  may  
have
maturities  of more than  13 months, provided:  (i) the Fund  is entitled to 
the
payment of principal at any time or during specified intervals not exceeding  
13
months, subject to notice of no more than 30 days, and (ii) the rate of 
interest
on  such instruments  is adjusted  (based upon  a pre-selected  market 
sensitive
index such as the prime rate of  a major commercial bank) at periodic  
intervals
not  exceeding 13 months.  In determining the  Fund's average weighted 
portfolio
maturity and  whether  a variable  or  floating  rate demand  instrument  has  
a
remaining maturity of 13 months or less, the maturity of each instrument will 
be
computed in accordance with guidelines established by the SEC.
    
 
                                       3
<PAGE>
   
   In  determining  whether an  unrated variable  rate  demand instrument  is 
of
comparable quality at the  time of purchase to  instruments with minimal  
credit
risk,  the Fund's adviser will follow guidelines adopted by the Trust's Board 
of
Trustees.
    
 
   
    TENDER OPTION BONDS.   The Fund  may invest up  to 10% of  the value of  
its
assets  in tender option bonds.  The Fund will not  purchase tender option 
bonds
unless (a) the  demand feature  applicable thereto  is exercisable  by the  
Fund
within  13 months of the date of such purchase upon no more than 30 days' 
notice
and thereafter is exercisable by the Fund no less frequently than annually  
upon
no  more than  30 days'  notice and,  (b) at  the time  of such  purchase, 
LBGAM
reasonably expects that (i) based upon its assessment of current and  
historical
interest rate trends, prevailing short-term tax-exempt rates will not exceed 
the
stated  interest rate on the underlying Municipal Obligations at the time of 
the
next tender fee adjustment, and (ii)  the circumstances which might entitle  
the
grantor  of a tender option to terminate the tender option would not occur 
prior
to the  time  of  the next  tender  opportunity.  At the  time  of  each  
tender
opportunity, the Fund will exercise the tender option with respect to any 
tender
option bonds unless LBGAM reasonably expects that, (a) based upon its 
assessment
of current and historical interest rate trends, prevailing short-term tax-
exempt
rates  will  not exceed  the stated  interest rate  on the  underlying 
Municipal
Obligations at  the  time  of  the  next tender  fee  adjustment,  and  (b)  
the
circumstances  which might entitle  the grantor of a  tender option to 
terminate
the tender  option  would  not occur  prior  to  the time  of  the  next  
tender
opportunity.  The Fund will  exercise the tender feature  with respect to 
tender
option bonds, or otherwise  dispose of their tender  option bonds, prior to  
the
time  the tender  option is  scheduled to  expire pursuant  to the  terms of 
the
agreement under which  the tender  option is  granted. The  Fund otherwise  
will
comply  with the provisions of  Rule 2a-7 under the  1940 Act in connection 
with
the  purchase  of  tender  option  bonds,  including,  without  limitation,  
the
requisite determination by the Board of Trustees that the tender option bonds 
in
question  meet the quality standards  described in Rule 2a-7.  In the event of 
a
default of the  Municipal Obligation  underlying a  tender option  bond, or  
the
termination  of the tender option agreement, the Fund would look to the 
maturity
date of the underlying security for  purposes of compliance with Rule 2a-7  
and,
if  its remaining maturity was  greater than 13 months,  the Fund would sell 
the
security as soon as would be  practicable. The Fund will purchase tender  
option
bonds  only  when it  is  satisfied that  (a)  the custodial  and  tender 
option
arrangements, including the fee payment arrangements, will not adversely  
affect
the tax-exempt status of the underlying Municipal Obligations and (b) payment 
of
any  tender fees  will not have  the effect  of creating taxable  income for 
the
Fund. Based on the tender option bond arrangement, the Fund expects to value 
the
tender option  bond  at  par; however,  the  value  of the  instrument  will  
be
monitored to assure that it is valued at fair value.
    
 
    WHEN-ISSUED  SECURITIES.  As stated in the Prospectus, the Fund may 
purchase
Municipal Obligations on a  "when-issued" basis (I.E.,  for delivery beyond  
the
normal  settlement date at  a stated price  and yield). When  the Fund agrees 
to
purchase when-issued securities,  its custodian  will set aside  cash or  
liquid
portfolio  securities  equal  to the  amount  of  the commitment  in  a 
separate
account. Normally, the custodian will set aside portfolio securities to  
satisfy
a  purchase commitment, and in such a case the Fund may be required 
subsequently
to place additional assets in the separate  account in order to ensure that  
the
value  of the account remains  equal to the amount  of the Fund's commitment. 
It
may be expected that the  Fund's net assets will  fluctuate to a greater  
degree
when  it sets aside portfolio securities to cover such purchase commitments 
than
when it sets aside cash. Because the  Fund will set aside cash or liquid  
assets
to  satisfy  its  purchase  commitments  in  the  manner  described,  the 
Fund's
liquidity and ability to  manage its portfolios might  be affected in the  
event
its  commitments to  purchase when-issued  securities ever  exceeded 25%  of 
the
 
                                       4
<PAGE>
value of  its assets.  When the  Fund engages  in when-issued  transactions,  
it
relies on the seller to consummate the trade. Failure of the seller to do so 
may
result  in the  Fund's incurring a  loss or  missing an opportunity  to obtain 
a
price considered  to be  advantageous.  The Fund  does  not intend  to  
purchase
when-issued  securities for speculative purposes but  only in furtherance of 
its
investment objective. The Fund reserves the right to sell the securities  
before
the settlement date if it is deemed advisable.
 
   
    STAND-BY  COMMITMENTS.   The  Fund may  acquire "stand-by  commitments" 
with
respect to  Municipal  Obligations  held  in its  portfolio.  Under  a  stand-
by
commitment, a dealer agrees to purchase at the Fund's option specified 
Municipal
Obligations  at their amortized cost value to the Fund plus accrued interest, 
if
any. (Stand-by commitments acquired by the Fund may also be referred to as 
"put"
options.) Stand-by commitments may be sold, transferred or assigned by the  
Fund
only with the underlying instruments.
    
 
   The  Fund  expects  that  stand-by commitments  will  generally  be 
available
without the  payment  of  any  direct or  indirect  consideration.  However,  
if
necessary  or  advisable, the  Fund  may pay  for  a stand-by  commitment 
either
separately in cash or  by paying a higher  price for portfolio securities  
which
are  acquired subject  to the  commitment (thus  reducing the  yield to 
maturity
otherwise available for the  same securities). The total  amount paid in  
either
manner  for outstanding stand-by commitments held by the Fund is not expected 
to
exceed 1/2 of 1% of the value of the Fund's total assets calculated  
immediately
after each stand-by commitment is acquired.
 
   
   The  Fund intends to enter into stand-by commitments only with dealers, 
banks
and broker-dealers  which, in  the opinion  of the  investment adviser,  
present
minimal  credit risks.  In evaluating  the creditworthiness  of the  issuer of 
a
stand-by  commitment,  the  investment  adviser  will  review  periodically  
the
issuer's  assets, liabilities,  contingent claims  and other  relevant 
financial
information.
    
 
   The Fund would  acquire stand-by commitments  solely to facilitate  
portfolio
liquidity  and does  not intend  to exercise  its rights  thereunder for 
trading
purposes. Stand-by commitments acquired by the  Fund would be valued at zero  
in
determining  net asset value. Where the  Fund paid any consideration directly 
or
indirectly for a stand-by commitment, its cost would be reflected as  
unrealized
depreciation for the period during which the commitment was held by the Fund.
 
    PARTICIPATIONS.     The  Fund  may   purchase  from  financial  
institutions
tax-exempt participation  interests in  Municipal Obligations.  A  
participation
interest gives the Fund an undivided interest in the Municipal Obligation in 
the
proportion  that the Fund's participation interest  bears to the total amount 
of
the Municipal Obligation. These instruments may have floating or variable  
rates
of  interest. If the participation interest is  unrated, it will be backed by 
an
irrevocable letter of credit or  guarantee of a bank  that the Trust's Board  
of
Trustees   has  determined  meets  certain  quality  standards  or  the  
payment
obligation  otherwise  will  be  collateralized  by  obligations  of  the   
U.S.
Government   and   its   agencies   and   instrumentalities   ("U.S.  
Government
securities").  The  Fund  will   have  the  right,   with  respect  to   
certain
participation  interests,  to demand  payment, on  a  specified number  of 
days'
notice, for all or any part of the Fund's interest in the Municipal 
Obligations,
plus accrued interest. The Fund will invest no more than 5% of its total  
assets
in participation interests.
 
    ILLIQUID SECURITIES.  The Fund may not invest more than 10% of its total 
net
assets  in illiquid securities, including securities that are illiquid by 
virtue
of  the  absence  of  a  readily  available  market  or  legal  or   
contractual
restrictions on resale. Securities that have legal or contactual restrictions 
on
resale but have a
 
                                       5
<PAGE>
   
readily  available  market  are not  considered  illiquid for  purposes  of 
this
limitation. The Fund's investment adviser will  monitor on an ongoing basis  
the
liquidity  of such restricted  securities under the supervision  of the Board 
of
Trustees.
    
 
   
   The SEC has adopted  Rule 144A under  the Securities Act  of 1933 as  
amended
(the  "1933 Act")  which allows for  a broader institutional  trading market 
for
securities otherwise subject  to restriction  on resale to  the general  
public.
Rule  144A establishes a "safe harbor" from the registration requirements of 
the
1933 Act for resales  of certain securities  to qualified institutional  
buyers.
The Fund's investment adviser anticipates that the market for certain 
restricted
securities  such as institutional municipal securities  will expand further as 
a
result of  this regulation  and the  development of  automated systems  for  
the
trading,  clearance and  settlement of  unregistered securities  of domestic 
and
foreign issuers, such as the PORTAL system sponsored by the National 
Association
of Securities Dealers.
    
 
   
   The investment adviser  will monitor the  liquidity of restricted  
securities
under  the supervision of the Board of Trustees. In reaching liquidity 
decisions
with respect  to Rule  144A securities,  the investment  adviser will  
consider,
inter  alia, the following factors:  (1) the unregistered nature  of a Rule 
144A
security; (2) the frequency of trades and  quotes for a Rule 144A security;  
(3)
the number of dealers willing to purchase or sell the Rule 144A security and 
the
number  of other potential purchasers; (4)  dealer undertakings to make a 
market
in the Rule 144A security; (5) the  trading markets for the Rule 144A  
security;
and  (6) the  nature of  the Rule  144A security  and the  nature of 
marketplace
trades (including, the time needed to dispose of the Rule 144A security, 
methods
of soliciting offers and mechanics of transfer).
    
 
   
   The  Appendix  to  this  Statement  of  Additional  Information  contains   
a
description  of  the  relevant  rating  symbols  used  by  nationally 
recognized
statistical rating organizations ("NRSROs")  for Municipal Obligations that  
may
be purchased by the Fund.
    
 
INVESTMENT LIMITATIONS
 
   
The  Prospectus for the Fund summarizes  certain investment limitations that 
may
not be changed without the affirmative vote of the holders of a majority of  
the
Fund's  outstanding shares (as defined  below under "Miscellaneous"). 
Investment
limitations numbered 1  through 6  may not  be changed  without such  a vote  
of
shareholders;  investment limitations 7 through  12 may be changed  by a vote 
of
the Trust's Board of Trustees at any time.
    
 
   The Fund may not:
 
         1. Borrow money, except from banks  for temporary purposes and then  
in
    amounts  not exceeding 10%  of the value  of the Fund's  total assets at 
the
    time of such borrowing; or mortgage, pledge or hypothecate any assets 
except
    in connection with any such  borrowing and in amounts  not in excess of  
the
    lesser  of the  dollar amounts borrowed  or 10%  of the value  of the 
Fund's
    total assets at the time of such borrowing. Additional investments will  
not
    be made when borrowings exceed 5% of the Fund's assets.
 
         2.  Make  loans,  except  that  the  Fund  may  purchase  or  hold 
debt
    instruments in accordance with its investment objective and policies.
 
         3. Act as an underwriter of securities, except insofar as the Fund  
may
    be  deemed  an  underwriter  under  applicable  securities  laws  in 
selling
    portfolio securities.
 
                                       6
<PAGE>
         4. Purchase or sell  real estate or  real estate limited  
partnerships,
    provided  that the Fund  may purchase securities of  issuers which invest 
in
    real estate or interests therein.
 
         5. Purchase or sell  commodities or commodity  contracts, or invest  
in
    oil,  gas  or  mineral exploration  or  development programs  or  in 
mineral
    leases.
 
         6. Purchase any securities which would  cause 25% or more of the  
value
    of its total assets at the time of purchase to be invested in the 
securities
    of  issuers  conducting  their  principal business  activities  in  the 
same
    industry, provided that there is  no limitation with respect to  
investments
    in U.S. Government securities.
 
         7.  Knowingly invest more than 10% of the value of the Fund's assets 
in
    securities that may be illiquid because of legal or contractual 
restrictions
    on resale or  securities for which  there are not  readily available  
market
    quotations.
 
         8.  Purchase securities  on margin, make  short sales  of securities 
or
    maintain a short position.
 
         9. Write  or  sell  puts, calls,  straddles,  spreads  or  
combinations
    thereof.
 
        10.  Invest in securities if  as a result the  Fund would then have 
more
    than  5%  of  its  total  assets  in  securities  of  companies   
(including
    predecessors) with less than three years of continuous operation.
 
        11.   Purchase  securities  of  other  investment  companies  except  
as
    permitted under the 1940 Act or in connection with a merger,  
consolidation,
    acquisition or reorganization.
 
        12. Invest in warrants.
 
   In  addition, without the affirmative vote of  the holders of a majority of 
a
Fund's outstanding shares, such Fund may  not change its policy of investing  
at
least  80% of  its total assets  (except during temporary  defensive periods) 
in
Municipal Obligations.
 
MUNICIPAL OBLIGATIONS
 
IN GENERAL
 
   
Municipal Obligations include debt  obligations issued by governmental  
entities
to  obtain funds  for various public  purposes, including the  construction of 
a
wide range of public facilities,  the refunding of outstanding obligations,  
the
payment  of  general operating  expenses and  the extension  of loans  to 
public
institutions and facilities.  Private activity bonds  that are issued  by or  
on
behalf  of public  authorities to finance  various privately-operated 
facilities
are included  within the  term Municipal  Obligations if  the interest  paid  
to
shareholders  is (subject  to the federal  alternative minimum  tax) exempt 
from
regular federal  income tax.  Opinions  relating to  the validity  of  
Municipal
Obligations  and to the exemption of  interest thereon from federal income 
taxes
are rendered by counsel to the issuers or bond counsel to the respective 
issuing
authorities at the time of issuance. Neither the Fund nor the investment 
adviser
will review independently the underlying proceedings relating to the issuance 
of
Municipal Obligations or the bases for such opinions.
    
 
   The Fund may hold tax-exempt derivatives which  may be in the form of  
tender
option  bonds,  participations,  beneficial interests  in  a  trust, 
partnership
interests or other forms. A number  of different structures have been used.  
For
example,  interests in long-term fixed rate Municipal Obligations held by a 
bank
as
 
                                       7
<PAGE>
   
trustee or custodian are coupled with  tender option, demand and other  
features
when  tax-exempt derivatives are  created. Together, these  features entitle 
the
holder of the interest to tender (or put) the underlying Municipal Obligation 
to
a third party at periodic intervals and to receive the principal amount 
thereof.
In some  cases,  Municipal Obligations  are  represented by  custodial  
receipts
evidencing  rights  to  receive  specific  future  interest  payments, 
principal
payments or both, on the underlying municipal securities held by the  
custodian.
Under  such arrangements, the holder of the  custodial receipt has the option 
to
tender the underlying municipal  securities at their face  value to the  
sponsor
(usually  a bank or broker-dealer or other financial institution), which is 
paid
periodic fees equal to the difference  between the bond's fixed coupon rate  
and
the  rate that would cause the bond, coupled with the tender option, to trade 
at
par on the date of a rate adjustment. The Fund may hold tax-exempt  
derivatives,
such   as  participation   interests  and  custodial   receipts,  for  
Municipal
Obligations which give the  holder the right to  receive a payment of  
principal
subject  to the conditions described above. The Internal Revenue Service has 
not
ruled on whether the interest received on tax-exempt derivatives in the form  
of
participation  interests or  custodial receipts is  tax-exempt, and 
accordingly,
purchases of any such interests or receipts are based on the opinion of  
counsel
to  the  sponsors  of  such  derivative securities.  Neither  the  Fund  nor 
the
investment adviser will review independently the underlying proceedings  
related
to the creation of any tax-exempt derivatives or the bases for such opinions.
    
 
   
   As   described  in   the  Prospectus   for  the   Fund,  the   two  
principal
classifications of  Municipal Obligations  consist of  "general obligation"  
and
"revenue"  issues,  and the  Fund's  portfolios may  include  "moral 
obligation"
issues, which are normally issued by special purpose authorities. There are,  
of
course,  variations  in  the quality  of  Municipal Obligations,  both  within 
a
particular  classification  and  between  classifications,  and  the  yields  
on
Municipal  Obligations depend upon a variety of factors, including general 
money
market conditions, the financial condition of the issuer, general conditions  
of
the  municipal bond market, the  size of a particular  offering, the maturity 
of
the obligation and the  rating of the issue.  The ratings of statistical  
rating
organizations   represent  their  opinions  as   to  the  quality  of  
Municipal
Obligations. It should be emphasized, however, that ratings are general and  
are
not  absolute  standards of  quality, and  Municipal  Obligations with  the 
same
maturity, interest rate  and rating  may have different  yields while  
Municipal
Obligations  of the same  maturity and interest rate  with different ratings 
may
have the  same  yield. Subsequent  to  their purchase  by  the Fund,  issues  
of
Municipal  Obligations may  cease to  be rated or  their ratings  may be 
reduced
below the  minimum rating  required for  purchase by  the Fund.  The  
investment
adviser  will consider  such an  event in  determining whether  the Funds 
should
continue to hold the obligation.
    
 
   An issuer's obligations under  its Municipal Obligations  are subject to  
the
provisions  of bankruptcy,  insolvency and other  laws affecting  the rights 
and
remedies of creditors, such  as the Federal Bankruptcy  Code, and laws, if  
any,
which  may be enacted  by federal or  state legislatures extending  the time 
for
payment of principal or  interest, or both, or  imposing other constraints  
upon
enforcement  of such obligations  or upon the ability  of municipalities to 
levy
taxes. The power or ability of an issuer to meet its obligations for the 
payment
of interest on  and principal  of its  Municipal Obligations  may be  
materially
adversely affected by litigation or other conditions.
 
   Among other types of Municipal Obligations, the Funds may purchase short-
term
General  Obligation  Notes,  Tax Anticipation  Notes,  Bond  Anticipation 
Notes,
Revenue Anticipation Notes, Tax-Exempt Commercial Paper, Construction Loan 
Notes
and other  forms  of  short-term  loans. Such  instruments  are  issued  with  
a
short-term maturity in anticipation of the receipt of tax funds, the proceeds 
of
bond placements or
 
                                       8
<PAGE>
other  revenues. In addition, the  Fund may invest in  other types of tax-
exempt
instruments, including general obligation  and private activity bonds,  
provided
they have remaining maturities of 13 months or less at the time of purchase.
 
SPECIAL CONSIDERATIONS RELATING TO CALIFORNIA MUNICIPAL OBLIGATIONS
 
   
Some  of  the  significant  financial  considerations  relating  to  the  
Fund's
investments in  California  Municipal  Obligations are  summarized  below.  
This
summary   information  is  derived  principally  from  official  statements  
and
prospectuses relating to  securities offerings  of the State  of California  
and
various local agencies in California, available as of the date of this 
Statement
of  Additional Information and does not purport  to be a complete description 
of
any of the considerations mentioned herein. The accuracy and completeness of 
the
information contained in  such official  statements has  not been  
independently
verified.
    
 
   
    ECONOMIC  FACTORS.  The Governor's 1993-1994  budget, released on January 
8,
1993, proposed  general  fund  expenditures of  $37.3  billion,  with  
projected
revenues  of $39.9 billion. It also  proposed special fund expenditures of 
$12.4
billion and special fund revenues of $12.1 billion. To balance the budget in 
the
face of declining  revenues, the Governor  proposed a series  of revenue  
shifts
from  local government,  reliance on  increased federal  aid, and  reductions 
in
state spending.
    
 
   
   On May 20, 1993, the Department of Finance of the State of California  
issued
its May Revision of General Fund Revenues and Expenditures (the "May 
Revision").
The  May Revision indicated  that the revenue projections  of the January 
budget
proposal were tracking  well, with  the full  year 1992-1993  about $80  
million
higher  than the January projection. Personal income tax revenue was higher 
than
projected, sales tax was  close to target, and  bank and corporation taxes  
were
lagging  behind projections. The May Revision  projected the State would have 
an
accumulated deficit  of about  $2.75  billion by  June  30, 1993.  The  
Governor
proposed  to eliminate this deficit  over an 18-month period.  He also agreed 
to
retain the 0.5% sales tax  scheduled to expire June  30 for a six-month  
period,
dedicated to local public safety purposes, with a November election to 
determine
a  permanent extension.  Unlike previous  years, the  Governor's Budget  and 
May
Revision did not calculate a  "gap" to be closed,  but rather set forth  
revenue
and expenditure forecasts and proposals designed to produce a balanced budget.
    
 
   
   The  1993-1994  budget  act (the  "1993-94  Budget  Act") was  signed  by 
the
Governor on June  30, 1993,  along with implementing  legislation. The  
Governor
vetoed about $71 million in spending.
    
 
   
   The  1993-94 Budget Act is predicated  on general fund revenues and 
transfers
estimated  at  $40.6  billion,  $400  million  below  1992-93  (and  the  
second
consecutive year of actual decline). The principal reasons for declining 
revenue
are  the continued weak economy  and the expiration (or  repeal) of three 
fiscal
steps taken in 1991 -- a half cent temporary sales tax, a deferral of  
operating
loss  carryforwards, and repeal by initiative of  a sales tax on candy and 
snack
foods.
    
 
   
   The 1993-94 Budget Act also assumes  special fund revenues of $11.9  
billion,
an increase of 2.9 percent over 1992-93.
    
 
   
   The 1993-94 Budget Act includes general fund expenditures of $38.5 billion 
(a
6.3  percent reduction from projected 1992-93 expenditures of $41.1 billion), 
in
order to  keep a  balanced budget  within the  available revenues.  The  1993-
94
Budget  Act  also includes  special fund  expenditures of  $12.1 billion,  a 
4.2
percent  increase.  The  1993-94  Budget   Act  reflects  the  following   
major
adjustments:
    
 
                                       9
<PAGE>
   
   1.  Changes  in local  government financing  to shift  about $2.6  billion 
in
       property taxes from cities, counties, special districts and 
redevelopment
   agencies to school and community college districts, thereby reducing  
general
   fund  support  by an  equal amount.  About $2.5  billion would  be 
permanent,
   reflecting  termination  of  the  State's  "bailout"  of  local   
governments
   following   the  property   tax  cuts   of  Proposition   13  in   1978  
(See
   "Constitutional, Legislative and Other Factors" below).
    
 
   
        The property tax revenue  losses for cities and  counties are offset  
in
   part  by additional sales tax revenues  and mandate relief. The temporary 
0.5
   percent sales tax has been extended through December 31, 1993, for 
allocation
   to counties for public  safety programs. A  Constitutional amendment will  
be
   placed  on the  ballot in  a special statewide  election in  November 1993 
to
   extend the sales tax permanently for public safety purposes.
    
 
   
       Legislation also has been enacted to eliminate state mandates in order 
to
   provide local governments flexibility in making their programs responsive  
to
   local  needs. Legislation provides  mandate relief for  local justice 
systems
   which affect  county  audit  requirements, court  reporter  fees,  and  
court
   consolidation;  health and  welfare relief involving  advisory boards, 
family
   planning, state audits  and realignment  maintenance efforts;  and relief  
in
   areas  such as  county welfare department  self-evaluations, noise 
guidelines
   and recycling requirements.
    
 
   
       A lawsuit has been  filed by Los Angeles County challenging the shift  
of
   property taxes. Other counties or local agencies may join this action or 
file
   separate suits.
    
 
   
   2.  The  1993-94 Budget Act keeps K-12 Proposition 98 funding on a cash 
basis
       at the  same per-pupil  level  as 1992-93  by  providing schools  a  
$609
   million loan payable from future years' Proposition 98 funds.
    
 
   
   3.  President  Clinton's Fiscal Year 1994 budget proposals include about 
$692
       million of aid to the State from the federal government to offset  
health
   and  welfare costs  associated with foreign  immigrants living  in the 
State,
   which would reduce  a like amount  of general fund  expenditures. About  
$411
   million  of this  amount is  one-time funding. The  receipt of  this money 
is
   dependent upon the inclusion of such funding for the State in the 
President's
   budget that is ultimately approved.
    
 
   
   4.  Reductions of $600  million in  health and welfare  programs, which  
were
       agreed upon by the California Legislature and the Governor.
    
 
   
   5.  Reductions  of  $400  million  in  support  for  higher  education. 
These
       reductions will be partly offset by  fee increases at all three units  
of
   higher education.
    
 
   
   6.  A  2-year suspension of the renters' tax credit ($390 million 
expenditure
       reduction in 1993-94). A constitutional  amendment will be placed on  
the
   June 1994 ballot to restore the renters' tax credit after 1994-95.
    
 
   
   7.  Various  miscellaneous  cuts  (totalling approximately  $150  million) 
in
       State government  services  in  many  agencies, up  to  15  percent.  
The
   Governor would suspend the 4 percent automatic budget reduction "trigger," 
as
   was done in 1992-93, so cuts can be focused.
    
 
   
   8.  Miscellaneous one-time items, including deferral of payment to the 
Public
       Employees  Retirement Fund ($339 million) and  a change in accounting 
for
   debt service from accrual to cash basis, saving $107 million.
    
 
                                       10
<PAGE>
   
   The 1993-94 Budget Act contains  no general fund tax/revenue increases  
other
than a two year suspension of the renters' tax credit. The Governor continues 
to
predict  that population growth in the 1990's will keep upward pressure on 
major
State programs,  such as  K-14 education,  health and  welfare and  
corrections,
outstripping  projected revenue growth  in an economy  only very slowly 
emerging
from a deep recession.
    
 
   
   The October 1993 Bulletin of the  Department of Finance reports that  
General
Fund  revenues for September  were $128 million  above projections, although 
the
report indicated  $45 million  of  this represented  a scheduled  insurance  
tax
refund  which was not processed in September.  Through the first three months 
of
the fiscal year, revenues were $214 million, or 2.3 percent, above  
projections,
with  all four  major taxes (personal  income, sales, bank  and corporation, 
and
insurance) tracking projections well. Revenues  for the first quarter  
represent
about 20 percent of annual receipts. The Department of Finance also reports 
that
the  State will only receive approximately $450  million in aid from the 
Federal
Government to  offset  the health  and  welfare costs  associated  with  
foreign
immigrants  living  in  the  State, substantially  less  than  the  $692 
million
contemplated by the 1993-94 Budget Act.
    
 
   
   Despite the  encouraging financial  results  early in  the fiscal  year,  
the
Department's  report of sluggish  economic activity raises  the possibility 
that
results later  in the  fiscal year  may  not meet  original projections.  A  
new
projection will be issued with the Governor's Budget in January 1994.
    
 
    CONSTITUTIONAL,   LEGISLATIVE  AND   OTHER  FACTORS.     Certain  
California
constitutional   amendments,    legislative    measures,    executive    
orders,
administrative  regulations and  voter initiatives  could result  in the 
adverse
effects described  below. The  following information  constitutes only  a  
brief
summary,  does  not  purport to  be  a  complete description,  and  is  based 
on
information  drawn  from  official  statements  and  prospectuses  relating   
to
securities  offerings of the  State of California and  various local agencies 
in
California,  available  as  of  the   date  of  this  Statement  of   
Additional
Information.  While the Fund has not independently verified such information, 
it
has no reason to believe  that such information is  not correct in all  
material
respects.
 
   Certain  California  Municipal Obligations  in  the Fund's  portfolio  may 
be
obligations of  issuers which  rely in  whole  or in  part on  California  
state
revenues  for payment of these obligations.  Property tax revenues and a 
portion
of the State's  general fund  surplus are  distributed to  counties, cities  
and
their  various  taxing  entities  and  the  State  assumes  certain  
obligations
theretofore paid out of local funds. Whether and to what extent a portion of 
the
State's general fund will be distributed  in the future to counties, cities  
and
their various entities, is unclear.
 
   
   On  November 1, 1993,  the United States  Supreme Court agreed  to review 
the
California court decisions in BARCLAYS BANK INTERNATIONAL, LTD V. FRANCHISE  
TAX
BOARD  and COLGATE-PALMOLIVE COMPANY,  INC. V. FRANCHISE  TAX BOARD which 
upheld
California's worldwide combined reporting ("WWCR") method of taxing 
corporations
engaged in a  unitary business  operation against challenges  under the  
foreign
commerce and due process clauses. In 1983, in CONTAINER CORPORATION V. 
FRANCHISE
TAX  BOARD, the  Supreme Court  held that  the WWCR  method did  not violate 
the
foreign commerce clause in the case  of a domestic-based unitary business  
group
with  foreign-domiciled subsidiaries, but specifically left open the question 
of
whether a  different  result  would obtain  for  a  foreign-based  
multinational
unitary   business.   BARCLAYS  concerns   a  foreign-based   multinational  
and
COLGATE-PALMOLIVE concerns a  domestic-based multinational in  light of  
federal
foreign  policy developments since 1983. In a brief filed at the Supreme 
Court's
request, the Clinton Administration  had argued that the  Court should not  
hear
the BARCLAYS case, even though there are
    
 
                                       11
<PAGE>
   
"serious  questions" about the California Supreme Court's analysis and 
holdings,
because the recent changes in  the law noted below  means the issue in  
BARCLAYS
"lacks   substantial  recurring  importance."  The  Clinton  Administration  
had
previously decided not to become involved  in the BARCLAYS petition. The  
United
States  Government  under the  Bush Administration,  along with  various 
foreign
Governments, had appeared as amicus on behalf of BARCLAY'S before the 
California
Courts. It is  unclear what position,  if any, the  Clinton Administration  
will
take in the case on the merits. The fiscal impact on the State of California 
has
been  reported as  follows: the  State would  have to  refund $1.730  billion 
to
taxpayers ($530  million due  to BARCLAYS;  $1.2 billion  due to  COLGATE),  
and
cancel  another  $2.35  billion  of pending  assessments  ($350  million  due 
to
BARCLAYS; $1.9 billion due to COLGATE), if the Supreme Court ultimately  
strikes
down the WWCR method and rules its decision has retrospective effect.
    
 
   Certain  California Municipal Obligations held by the Fund may be 
obligations
of issuers who rely in whole or in  part on ad valorem real property taxes as  
a
source  of revenue. On June 6, 1978,  California voters approved an amendment 
to
the California Constitution known as  Proposition 13, which added Article  
XIIIA
to  the California  Constitution. The  effect of  Article XIIIA  is to  limit 
ad
valorem taxes on real property and to restrict the ability of taxing entities 
to
increase real  property tax  revenues. On  November 7,  1978, California  
voters
approved  Proposition  8,  and  on  June  3,  1986,  California  voters 
approved
Proposition 46, both of which amended Article XIIIA.
 
   Section 1 of Article XIIIA limits the maximum ad valorem tax on real 
property
to 1% of  full cash  value (as defined  in Section  2), to be  collected by  
the
counties  and apportioned according to law; provided that the 1% limitation 
does
not apply to ad  valorem taxes or  special assessments to  pay the interest  
and
redemption  charges on (i) any indebtedness approved by the voters prior to 
July
1, 1978, or (ii) any bonded  indebtedness for the acquisition or improvement  
of
real property approved on or after July 1, 1978, by two-thirds of the votes 
cast
by  the voters  voting on  the proposition. Section  2 of  Article XIIIA 
defines
"full cash value" to mean "the  County Assessor's valuation of real property  
as
shown  on  the 1975/76  tax bill  under  'full cash  value' or,  thereafter, 
the
appraised value of real property when purchased, newly constructed, or a  
change
in ownership has occurred after the 1975 assessment." The full cash value may 
be
adjusted  annually to reflect inflation at a rate  not to exceed 2% per year, 
or
reduction in the consumer  price index or comparable  local data, or reduced  
in
the  event of  declining property value  caused by damage,  destruction or 
other
factors. The California  State Board  of Equalization  has adopted  
regulations,
binding  on county assessors, interpreting the  meaning of "change in 
ownership"
and "new construction" for purposes of  determining full cash value of  
property
under Article XIIIA.
 
   Legislation  enacted by the California Legislature to implement Article 
XIIIA
(Statutes of 1978, Chapter  292, as amended)  provides that notwithstanding  
any
other law, local agencies may not levy any ad valorem property tax except to 
pay
debt  service on indebtedness approved by the  voters prior to July 1, 1978, 
and
that each county will levy the maximum  tax permitted by Article XIIIA of  
$4.00
per  $100 assessed valuation (based on the former practice of using 25%, 
instead
of 100%,  of full  cash  value as  the assessed  value  for tax  purposes).  
The
legislation  further provided  that, for the  1978/79 fiscal year  only, the 
tax
levied by each county was to be apportioned among all taxing agencies within 
the
county in proportion to their average share of taxes levied in certain  
previous
years.  The apportionment of  property taxes for fiscal  years after 1978/79 
has
been revised pursuant  to Statutes of  1979, Chapter 282  which provides  
relief
funds  from State  moneys beginning  in fiscal year  1979/80 and  is designed 
to
provide a permanent system for sharing  state taxes and budget funds with  
local
agencies. Under Chapter 282, cities and counties receive
 
                                       12
<PAGE>
more  of  the remaining  property tax  revenues  collected under  Proposition 
13
instead of direct state aid. School districts receive a correspondingly  
reduced
amount  of property taxes, but receive  compensation directly from the state 
and
are given additional relief. Chapter 282  does not affect the derivation of  
the
base levy ($4.00 per $100 assessed valuation) and the bonded debt tax rate.
 
   
   On  November 6,  1979, an  initiative known as  "Proposition 4"  or the 
"Gann
Initiative" was approved by the California voters, which added Article XIIIB  
to
the  California Constitution. Under Article  XIIIB, State and local 
governmental
entities have an  annual "appropriations  limit" and  are not  allowed to  
spend
certain moneys called "appropriations subject to limitation" in an amount 
higher
than the "appropriations limit." Article XIIIB does not affect the 
appropriation
of  moneys which are excluded from  the definition of "appropriations subject 
to
limitation," including debt service on indebtedness existing or authorized as 
of
January 1, 1979, or bonded indebtedness subsequently approved by the voters.  
In
general  terms, the  "appropriations limit" is  required to be  based on 
certain
1978/79 expenditures,  and is  to be  adjusted annually  to reflect  changes  
in
consumer  prices, population  and certain  services provided  by these 
entities.
Article XIIIB also provides that if these entities' revenues in any year  
exceed
the  amounts permitted to be spent, the excess is to be returned by revising 
tax
rates or fee schedules over the subsequent two years.
    
 
   At the  November 8,  1988  general election,  California voters  approved  
an
initiative  known as  Proposition 98.  This initiative  amends Article  XIIIB 
to
require that (i) the  California Legislature establish  a prudent state  
reserve
fund in an amount as it shall deem reasonable and necessary and (ii) revenues 
in
excess  of amounts permitted to  be spent and which  would otherwise be 
returned
pursuant to  Article  XIIIB  by revision  of  tax  rates or  fee  schedules,  
be
transferred  and allocated (up to a maximum of  4%) to the State School Fund 
and
be expended solely for purposes of instructional improvement and 
accountability.
No such transfer or allocation of  funds will be required if certain  
designated
state  officials determine that annual student  expenditures and class size 
meet
certain criteria as  set forth  in Proposition 98.  Any funds  allocated to  
the
State  School Fund shall  cause the appropriation  limits established in 
Article
XIIIB to be annually increased for any such allocation made in the prior year.
 
   Proposition 98  also  amends  Article  XVI  to  require  that  the  State  
of
California  provide a minimum level of  funding for public schools and 
community
colleges. Commencing  with the  1988-89  fiscal year,  state monies  to  
support
school  districts  and community  college districts  shall  equal or  exceed 
the
lesser of (i) an amount equalling the percentage of state general revenue  
bonds
for  school and community college  districts in fiscal year  1986-87, or (ii) 
an
amount  equal  to  the  prior  year's  state  general  fund  proceeds  of  
taxes
appropriated  under Article XIIIB plus allocated  proceeds of local taxes, 
after
adjustment  under  Article  XIIIB.  The  initiative  permits  the  enactment  
of
legislation,  by a two-thirds  vote, to suspend  the minimum funding 
requirement
for one year.
 
   On June 30,  1989, the California  Legislature enacted Senate  
Constitutional
Amendment 1, a proposed modification of the California Constitution to alter 
the
spending  limit and the  education funding provisions  of Proposition 98. 
Senate
Constitutional Amendment 1, on the June  5, 1990 ballot as Proposition 111,  
was
approved  by the  voters and  took effect  on July  1, 1990.  Among a  number 
of
important provisions, Proposition 111 recalculates spending limits for the 
State
and for local governments, allows greater annual increases in the limits, 
allows
the averaging  of two  years'  tax revenues  before requiring  action  
regarding
excess  tax revenues, reduces  the amount of the  funding guarantee in 
recession
years for school districts and community college districts (but with a floor  
of
40.9    percent    of    State    general    fund    tax    revenues),   
removes
 
                                       13
<PAGE>
the provision  of Proposition  98 which  included excess  moneys transferred  
to
school districts and community college districts in the base calculation for 
the
next  year, limits the amount of State tax revenue over the limit which would 
be
transferred to school  districts and  community college  districts, and  
exempts
increased  gasoline taxes  and truck weight  fees from  the State 
appropriations
limit. Additionally, Proposition 111 exempts from the State appropriations 
limit
funding for capital outlays.
 
   Article XIIIB, like Article XIIIA, may require further interpretation by 
both
the Legislature  and  the courts  to  determine its  applicability  to  
specific
situations  involving the State and local taxing authorities. Depending upon 
the
interpretation, Article XIIIB  may limit significantly  a governmental  
entity's
ability  to budget  sufficient funds  to meet  debt service  on bonds  and 
other
obligations.
 
   On November 4, 1986, California  voters approved an initiative statute  
known
as  Proposition  62.  This initiative  (i)  requires  that any  tax  for 
general
governmental purposes imposed by local governments be approved by resolution  
or
ordinance  adopted by a two-thirds vote of the governmental entity's 
legislative
body and by a majority vote of  the electorate of the governmental entity,  
(ii)
requires  that any special tax  (defined as taxes levied  for other than 
general
governmental purposes) imposed by a local  governmental entity be approved by  
a
two-thirds  vote of the voters within that jurisdiction, (iii) restricts the 
use
of revenues from a special tax to the purposes or for the service for which  
the
special  tax was imposed, (iv)  prohibits the imposition of  ad valorem taxes 
on
real property  by local  governmental entities  except as  permitted by  
Article
XIIIA,  (v) prohibits the imposition of transaction taxes and sales taxes on 
the
sale of real property by local  governments, (vi) requires that any tax  
imposed
by  a local government on or after August 1, 1985 be ratified by a majority 
vote
of the electorate  within two  years of  the adoption  of the  initiative or  
be
terminated  by November  15, 1988,  (vii) requires  that, in  the event  a 
local
government fails to comply with the  provisions of this measure, a reduction  
in
the  amount of property tax revenue allocated to such local government occurs 
in
an amount equal to the revenues received by such entity attributable to the  
tax
levied in violation of the initiative, and (viii) permits these provisions to 
be
amended exclusively by the voters of the State of California.
 
   In  September 1988, the California Court of  Appeal in CITY OF WESTMINSTER 
V.
COUNTY OF ORANGE, 204 Cal. App. 3d 623, 215 Cal. Rptr. 511 (Cal. Ct. App. 
1988),
held that Proposition 62  is unconstitutional to the  extent that it requires  
a
general  tax by a general law city, enacted on or after August 1, 1985 and 
prior
to the effective date of Proposition 62, to be subject to approval by a 
majority
of voters.  The  Court  held  that the  California  Constitution  prohibits  
the
imposition  of  a  requirement  that  local tax  measures  be  submitted  to 
the
electorate by either referendum or initiative. It is not possible to predict 
the
impact of this  decision on charter  cities, on  special taxes or  on new  
taxes
imposed after the effective date of Proposition 62.
 
   On  November 8, 1988, California  voters approved Proposition 87. 
Proposition
87  amended  Article  XVI,  Section  16,  of  the  California  Constitution   
by
authorizing  the California Legislature to  prohibit redevelopment agencies 
from
receiving any of the property tax revenue raised by increased property tax 
rates
levied to repay bonded  indebtedness of local governments  which is approved  
by
voters  on or after January  1, 1989. It is not  possible to predict whether 
the
California Legislature  will enact  such a  prohibition nor  is it  possible  
to
predict the impact of Proposition 87 on redevelopment agencies and their 
ability
to make payments on outstanding debt obligations.
 
                                       14
<PAGE>
   Certain  California Municipal Obligations held by the Fund may be 
obligations
which are payable solely from the revenues of health care institutions.  
Certain
provisions  under  California  law  may  adversely  affect  these  revenues 
and,
consequently, payment on those Municipal Obligations.
 
   The Federally sponsored Medicaid program for health care services to 
eligible
welfare  beneficiaries  in  California  is   known  as  the  Medi-Cal   
program.
Historically,  the  Medi-Cal program  has provided  for  a cost-based  system 
of
reimbursement for  inpatient care  furnished to  Medi-Cal beneficiaries  by  
any
hospital  wanting to participate in the Medi-Cal program, provided such 
hospital
met applicable requirements for participation. California law now provides  
that
the  State of  California shall selectively  contract with  hospitals to 
provide
acute inpatient  services to  Medi-Cal  patients. Medi-Cal  contracts  
currently
apply only to acute inpatient services. Generally, such selective contracting 
is
made   on  a  flat  per  diem  payment   basis  for  all  services  to  Medi-
Cal
beneficiaries, and  generally such  payment  has not  increased in  relation  
to
inflation,  costs  or  other factors.  Other  reductions or  limitations  may 
be
imposed on  payment  for services  rendered  to Medi-Cal  beneficiaries  in  
the
future.
 
   Under  this approach,  in most geographical  areas of  California, only 
those
hospitals which enter into a Medi-Cal contract with the State of California 
will
be  paid  for  non-emergency  acute  inpatient  services  rendered  to  Medi-
Cal
beneficiaries. The State may also terminate these contracts without notice 
under
certain  circumstances and is obligated to make contractual payments only to 
the
extent the California legislature appropriates adequate funding therefor.
 
   In February 1987,  the Governor  of the  State of  California announced  
that
payments  to  Medi-Cal providers  for certain  services (not  including 
hospital
acute inpatient services) would be decreased  by ten percent through June  
1987.
However,  a federal  district court  issued a  preliminary injunction 
preventing
application of  any cuts  until  a trial  on  the merits  can  be held.  If  
the
injunction  is deemed to  have been granted improperly,  the State of 
California
would be  entitled  to  recapture  the payment  differential  for  the  
intended
reduction  period.  It is  not  possible to  predict  at this  time  whether 
any
decreases will ultimately be implemented.
 
   California enacted legislation in 1982  that authorizes private health  
plans
and  insurers to contract directly with  hospitals for services to 
beneficiaries
on negotiated terms.  Some insurers  have introduced plans  known as  
"preferred
provider   organizations"  ("PPOs"),   which  offer   financial  incentives  
for
subscribers who use only  the hospitals which contract  with the plan. Under  
an
exclusive  provider plan,  which includes most  health maintenance 
organizations
("HMOs"), private payors limit coverage  to those services provided by  
selected
hospitals.  Discounts offered  to HMOs  and PPOs  may result  in payment  to 
the
contracting hospital  of  less than  actual  cost  and the  volume  of  
patients
directed  to a hospital under an HMO or PPO contract may vary significantly 
from
projections. Often, HMO  or PPO  contracts are  enforceable for  a stated  
term,
regardless  of provider losses or of bankruptcy of the respective HMO or PPO. 
It
is expected that  failure to  execute and maintain  such PPO  and HMO  
contracts
would   reduce  a  hospital's  patient   base  or  gross  revenues.  
Conversely,
participation may  maintain or  increase the  patient base,  but may  result  
in
reduced payment and lower net income to the contracting hospitals.
 
   Such  California Municipal  Obligations may also  be insured by  the State 
of
California pursuant  to  an  insurance  program implemented  by  the  Office  
of
Statewide  Health  Planning  and Development  for  health  facility 
construction
loans. If  a default  occurs on  insured California  Municipal Obligations,  
the
State  Treasurer will issue debentures payable out of a reserve fund 
established
under the insurance program or
 
                                       15
<PAGE>
will  pay principal and  interest on an  unaccelerated basis from 
unappropriated
State funds.  At the  request of  the Office  of Statewide  Health Planning  
and
Development,  Arthur  D. Little,  Inc.,  prepared a  study  in December  1983 
to
evaluate the  adequacy  of the  reserve  fund established  under  the  
insurance
program and based on certain formulations and assumptions found the reserve 
fund
substantially underfunded. In September of 1986, Arthur D. Little, Inc. 
prepared
an  update  of  the  study  and concluded  that  an  additional  10%  reserve 
be
established for "multi-level" facilities. For  the balance of the reserve  
fund,
the  update recommended maintaining  the current reserve  calculation method. 
In
March of 1990, Arthur D. Little, Inc. prepared a further review of the study 
and
recommended that separate reserves continue to be established for  "multi-
level"
facilities at a reserve level consistent with those that would be required by 
an
insurance company.
 
   Certain  California Municipal Obligations held by the Fund may be 
obligations
which are secured in  whole or in part  by a mortgage or  deed of trust on  
real
property.  California has  five principal  statutory provisions  which limit 
the
remedies of a  creditor secured by  a mortgage or  deed of trust.  To limit  
the
creditor's  right to obtain a deficiency judgment, one limitation being based 
on
the method of foreclosure and the other  on the type of debt secured. Under  
the
former,  a deficiency judgment is barred when the foreclosure is accomplished 
by
means of nonjudicial trustee's sale. Under the latter, a deficiency judgment  
is
barred  when the foreclosed  mortgage or deed of  trust secures certain 
purchase
money obligations. Another California statute,  commonly known as the "one  
form
of  action" rule, requires  creditors secured by real  property to exhaust 
their
real property security by foreclosure before bringing a personal action  
against
the  debtor.  The  fourth  statutory provision  limits  any  deficiency 
judgment
obtained by a  creditor secured by  real property following  a judicial sale  
of
such  property to the excess of the outstanding  debt over the fair value of 
the
property at the time of the sale, thus preventing the creditor from obtaining  
a
large  deficiency judgment  against the debtor  as the  result of low  bids at 
a
judicial sale.  The fifth  statutory provision  gives the  debtor the  right  
to
redeem  the  real property  from any  judicial  foreclosure sale  as to  which 
a
deficiency judgment may be ordered against the debtor.
 
   Upon the default of a  mortgage or deed of  trust with respect to  
California
real  property, the creditor's nonjudicial foreclosure rights under the power 
of
sale contained in the mortgage or deed  of trust are subject to the  
constraints
imposed  by California law upon  transfers of title to  real property by 
private
power of sale.  During the  three-month period beginning  with the  filing of  
a
formal  notice of default, the  debtor is entitled to  reinstate the mortgage 
by
making any  overdue  payments. Under  standard  loan servicing  procedures,  
the
filing of the formal notice of default does not occur unless at least three 
full
monthly  payments  have become  due  and remain  unpaid.  The power  of  sale 
is
exercised by posting and publishing a notice of sale for at least 20 days  
after
expiration  of the  three-month reinstatement  period. Therefore,  the 
effective
minimum period for foreclosing on a mortgage could be in excess of seven  
months
after  the initial  default. Such time  delays in collections  could disrupt 
the
flow of revenues available to an issuer  for the payment of debt service on  
the
outstanding  obligations if  such defaults occur  with respect  to a 
substantial
number of mortgages or deeds of trust securing an issuer's obligations.
 
   In addition, a court could find  that there is sufficient involvement of  
the
issuer  in the nonjudicial sale of property securing a mortgage for such 
private
sale to constitute "state action," and could hold that the private-right-of-
sale
proceedings violate  the  due  process  requirements of  the  Federal  or  
State
Constitutions,  consequently  preventing an  issuer  from using  the 
nonjudicial
foreclosure remedy described above.
 
                                       16
<PAGE>
   Certain California  Municipal  Obligations in  the  Fund's portfolio  may  
be
obligations  which finance the  acquisition of single  family home mortgages 
for
low and moderate income mortgagors. These obligations may be payable solely 
from
revenues derived  from  the home  mortgages,  and are  subject  to  
California's
statutory  limitations described above applicable to obligations secured by 
real
property. Under  California antideficiency  legislation,  there is  no  
personal
recourse  against a  mortgagor of a  single family residence  purchased with 
the
loan secured  by  the  mortgage,  regardless of  whether  the  creditor  
chooses
judicial or nonjudicial foreclosure.
 
   Under California law, mortgage loans secured by single-family, owner-
occupied
dwellings  may be prepaid at any time. Prepayment charges on such mortgage 
loans
may be imposed only with respect to voluntary prepayments made during the  
first
five  years during the term of the mortgage loan, and cannot in any event 
exceed
six months' advance  interest on  the amount  prepaid in  excess of  20% of  
the
original principal amount of the mortgage loan. This limitation could affect 
the
flow of revenues available to an issuer for debt service on the outstanding 
debt
obligations which financed such home mortgages.
 
OTHER CONSIDERATIONS
 
From  time  to time,  proposals  have been  introduced  before Congress  for 
the
purpose of  restricting or  eliminating  the federal  income tax  exemption  
for
interest  on Municipal  Obligations. For  example, under  the Tax  Reform Act 
of
1986, enacted in October 1986, interest  on certain private activity bonds  
must
be  included in an investor's alternative  minimum taxable income, and 
corporate
investors must treat all tax-exempt interest as an item of tax preference.  
(See
the Prospectus, "Taxes.") Moreover, with respect to Municipal Obligations 
issued
by  the State of California, the Trust  cannot predict what legislation, if 
any,
may be proposed in  the California Legislature as  regards the California  
state
personal  income tax status of interest on such obligations, or which 
proposals,
if any, might  be enacted. Such  proposals, while pending  or if enacted,  
might
materially   adversely   affect   the  availability   of   California  
Municipal
Obligations, in particular, and Municipal Obligations generally, for  
investment
by  the Fund  and the liquidity  and value of  the Fund's portfolio.  In such 
an
event, the Trust would re-evaluate the investment objective and policies of  
the
Fund and consider changes in its structure or possible dissolution.
 
   
   Moreover,  if  the Trust's  Board of  Trustees,  after consultation  with 
the
investment adviser, should for any reason determine that it is impracticable  
to
invest  at least 50% of the Fund's assets in California Municipal Obligations 
at
the close of each quarter  of the Trust's taxable  year (and thereby to  
qualify
the  Fund to pay dividends that are exempt from California state personal 
income
tax), the  Board would  consider changing  the Fund's  investment objective  
and
policies  (and recommending  to shareholders  a change  in the  Fund's name), 
or
possibly dissolving the Fund.
    
 
   The payment of  principal and interest  on most securities  purchased by  
the
Fund  will depend upon the ability of the issuers to meet their obligations. 
The
value of the Fund's portfolio securities can be expected to vary inversely  
with
changes in prevailing interest rates.
 
                                       17
<PAGE>
ADDITIONAL PURCHASE AND REDEMPTION INFORMATION
 
IN GENERAL
 
   
Information  on how  to purchase  and redeem  shares of  the Fund,  and how 
such
shares are priced,  is included  in the Prospectus.  The issuance  of shares  
is
recorded on the books of the Fund, and share certificates are not issued.
    
 
   
   The  regulations  of  the  Comptroller of  the  Currency  (the 
"Comptroller")
provide that funds held in a fiduciary  capacity by a national bank approved  
by
the Comptroller to exercise fiduciary powers must be invested in accordance 
with
the  instrument establishing the fiduciary relationship and local law. The 
Trust
believes that  the purchase  of Fund  shares by  such national  banks acting  
on
behalf  of their fiduciary accounts is not contrary to applicable regulations 
if
consistent with the particular  account and proper under  the law governing  
the
administration of the account.
    
 
   
   Conflict  of interest restrictions  may apply to  an institution's receipt 
of
compensation paid by the Fund on fiduciary funds that are invested in the 
Fund's
Class B  or Class  C  shares. Institutions,  including  banks regulated  by  
the
Comptroller  and investment  advisers and  other money  managers subject  to 
the
jurisdiction  of  the  SEC,  the   Department  of  Labor  or  state   
securities
commissions,  should  consult their  legal  advisers before  investing 
fiduciary
funds in the Fund's Class B or Class C shares.
    
 
   Prior to effecting a  redemption of shares  represented by certificates,  
The
Shareholder Services Group, Inc. ("TSSG"), the Trust's transfer agent, must 
have
received  such certificates at its principal  office. All such certificates 
must
be endorsed by the redeeming shareholder or accompanied by a signed stock 
power,
in each  instance with  the signature  guaranteed by  a bank  or other  
eligible
guarantor  institution unless other  arrangements satisfactory to  the Fund 
have
previously been made. The Fund may require any additional information 
reasonably
necessary to evidence that a redemption has been duly authorized.
 
   
   Under the 1940 Act, the Fund may suspend the right of redemption or  
postpone
the  date of payment  upon redemption for  any period during  which the New 
York
Stock Exchange  (the "Exchange")  is closed,  other than  customary weekend  
and
holiday  closings, or  during which  trading on  the Exchange  is restricted, 
or
during which  (as determined  by the  SEC by  rule or  regulation) an  
emergency
exists as a result of which disposal or valuation of portfolio securities is 
not
reasonably  practicable, or for such  other periods as the  SEC may permit. 
(The
Fund may also suspend or postpone the recordation of the transfer of its  
shares
upon  the occurrence of any of the  foregoing conditions.) In addition, the 
Fund
may redeem  shares involuntarily  in certain  other instances  if the  Board  
of
Trustees   determines  that  failure   to  redeem  may   have  material  
adverse
consequences to the  Fund's shareholders in  general. If the  Board of  
Trustees
determines  that  conditions exist  which  make payment  of  redemption 
proceeds
wholly in cash unwise or undesirable, the Fund may make payment wholly or 
partly
in readily marketable securities  or other property.  In certain instances,  
the
Fund  may redeem shares pro rata from each shareholder of record without 
payment
of monetary consideration. See "Net Asset Value" below.
    
 
   
   Any institution  purchasing shares  on behalf  of separate  accounts will  
be
required  to hold  the shares  in a  single nominee  name (a  "Master 
Account").
Institution, investing in more  than one of the  Trust's portfolios or class  
of
shares  must maintain a separate Master Account  for each portfolio and class 
of
shares. Sub-accounts may be established by name or number either when the 
Master
Account is opened or later.
    
 
                                       18
<PAGE>
NET ASSET VALUE
 
The Fund's net asset value per share is calculated by adding the value of all 
of
the Fund's  portfolio  securities  and  other assets  belonging  to  that  
Fund,
subtracting  the liabilities charged  to the Fund  including dividends that 
have
been declared but not paid, and dividing the result by the number of the  
Fund's
shares  outstanding (irrespective of class or series). "Assets belonging to" 
the
Fund consist  of the  consideration received  upon the  issuance of  the  
Fund's
shares together with all income, earnings, profits and proceeds derived from 
the
investment  thereof, including any  proceeds from the  sale of such 
investments,
any funds or payments  derived from any reinvestment  of such proceeds, and  
the
portion  of any general  assets of the  Trust not belonging  to the Fund. 
Assets
belonging to the Fund are  charged with the direct  liabilities of the Fund  
and
with  a share of the general liabilities of the Trust allocated in proportion 
to
the  relative  net  assets  of  the  Fund  and  the  Trust's  other  
portfolios.
Determinations  made in  good faith  and in  accordance with  generally 
accepted
accounting principles  by the  Board of  Trustees as  to the  allocation of  
any
assets  and liabilities with respect to the Fund are conclusive and a portion 
of
any general assets of the Trust not belonging to a particular portfolio.  
Assets
belonging  to the Fund are  charged with the direct  liabilities of the Fund 
and
with a share of the general liabilities of the Trust allocated on a daily  
basis
in  proportion  to the  relative  net assets  of  the Trust's  other 
portfolios.
Determinations made  in good  faith and  in accordance  with generally  
accepted
accounting  principles of the Trust's Board of  Trustees as to the allocation 
of
any assets or liabilities with respect to the Fund are conclusive.
 
   As stated in the Prospectus, in computing  the net asset value of its  
shares
for  purposes of sales and redemptions, the  Fund uses the amortized cost 
method
of valuation.  Under  this  method,  the  Fund  values  each  of  its  
portfolio
securities  at cost on  the date of  purchase and thereafter  assumes a 
constant
proportionate amortization  of any  discount or  premium until  maturity of  
the
security.  As  a result,  the  value of  a  portfolio security  for  purposes 
of
determining net asset value normally does not change in response to  
fluctuating
interest  rates. While the amortized cost method provides certainty in 
portfolio
valuation, it may result in valuations of the Fund's securities which are 
higher
or lower than the market value of such securities.
 
   In connection  with its  use  of amortized  valuation,  the Fund  limits  
the
dollar-weighted  average maturity of its portfolio to  not more than 90 days 
and
does not  purchase any  instrument with  a remaining  maturity of  more than  
13
months  (397 days) (with certain exceptions).  The Trust's Board of Trustees 
has
also established, pursuant to rules promulgated by the SEC, procedures that  
are
intended to stabilize the Fund's net asset value per share for purposes of 
sales
and  redemptions at  $1.00. Such  procedures include  the determination  at 
such
intervals as the Board deems  appropriate, of the extent,  if any, to which  
the
Fund's net asset value per share calculated by using available market 
quotations
deviates  from $1.00 per share.  In the event such  deviation exceeds 1/2 of 
1%,
the Board will promptly  consider what action, if  any, should be initiated.  
If
the  Board  believes that  the amount  of  any deviation  from the  Fund's 
$1.00
amortized cost price per share may  result in material dilution or other  
unfair
results  to investors or  existing shareholders, it  will take such  steps as 
it
considers  appropriate  to  eliminate  or   reduce  to  the  extent   
reasonably
practicable any such dilution or unfair results. These steps may include 
selling
portfolio instruments prior to maturity to realize capital gains or losses or 
to
shorten  the  Fund's  average  portfolio  maturity,  redeeming  shares  in 
kind,
reducing or withholding  dividends, or  utilizing a  net asset  value per  
share
determined by using available market quotations.
 
                                       19
<PAGE>
MANAGEMENT OF THE FUND
 
TRUSTEES AND OFFICERS
 
The   Trust's  trustees  and  executive  officers,  their  addresses,  
principal
occupations during the past 5 years and other affiliations are as follows:
 
   
<TABLE>
<CAPTION>
                                                                         
PRINCIPAL OCCUPATIONS DURING PAST 5 YEARS
NAME AND ADDRESS                            POSITION WITH THE TRUST                
AND OTHER AFFILIATIONS
------------------------------------------  --------------------------  ------
--------------------------------------
<S>                                         <C>                         <C>
STEVEN SPIEGEL(1)(2)                        Vice Chairman of the Board  
Managing Director, Lehman Brothers;
 3 World Financial Center                   and Trustee                 
President, Lehman Brothers Global Asset
 New York, NY 10285                                                     
Management Inc.; formerly Chairman, Lehman
                                                                        
Brothers International (Europe).
CHARLES F. BARBER(2)(3)                     Trustee                     
Consultant; formerly Chairman of the Board,
 66 Glenwood Drive                                                      ASARCO 
Incorporated
 Greenwich, CT 06830
BURT N. DORSETT(2)(3)                       Trustee                     
Managing Partner, Dorsett McCabe Capital
 201 East 62nd Street                                                   
Management, Inc., an investment counselling
 New York, NY 10022                                                     firm; 
Director, Research Corporation
                                                                        
Technologies, a non-profit patent-clearing
                                                                        and 
licensing operation; formerly President,
                                                                        
Westinghouse Pension Investments
                                                                        
Corporation; formerly Executive Vice
                                                                        
President and Trustee, College Retirement
                                                                        
Equities Fund, Inc., a variable annuity
                                                                        fund; 
and formerly Investment Officer,
                                                                        
University of Rochester.
EDWARD J. KAIER(2)(3)                       Trustee                     
Partner with the law firm of Hepburn Willcox
 1100 One Penn Center                                                   
Hamilton & Putnam.
 Philadelphia, PA 19103
S. DONALD WILEY(2)(3)                       Trustee                     Vice-
Chairman and Trustee, H.J. Heinz
 USX Tower                                                              
Company Foundation; prior to October 1990,
 Pittsburgh, PA 15219                                                   Senior 
Vice President, General Counsel and
                                                                        
Secretary, H.J. Heinz Company.
</TABLE>
    
 
                                       20
<PAGE>
   
<TABLE>
<CAPTION>
                                                                         
PRINCIPAL OCCUPATIONS DURING PAST 5 YEARS
NAME AND ADDRESS                             POSITION WITH THE TRUST               
AND OTHER AFFILIATIONS
------------------------------------------  --------------------------  ------
--------------------------------------
<S>                                         <C>                         <C>
PETER MEENAN                                President                   
Managing Director of Lehman Brothers;
 260 Franklin Street                                                    
President of Lehman Brothers Institutional
 Boston, MA 02110                                                       Funds 
Group Trust; formerly, Director,
                                                                        Senior 
Vice President and Director of
                                                                        
Institutional Fund Services, The Boston
                                                                        
Company Advisors, Inc. from February 1984 to
                                                                        May 
1993; Director, Funds Distributor, Inc.
                                                                        (1992-
1993); Senior Vice President, The
                                                                        Boston 
Company Advisors, Inc. from August
                                                                        1984 
to May 1993.
JOHN M. WINTERS                             Vice President and          Senior 
Vice President and Senior Money
 3 World Financial Center                   Investment Officer          Market 
Portfolio Manager, Lehman Brothers
 New York, NY 10285                                                     Global 
Asset Management Inc.; formerly
                                                                        
Product Manager with Lehman Brothers Capital
                                                                        
Markets Group.
MICHAEL L. KARDOK                           Treasurer                   Vice 
President, The Shareholder Services
 One Exchange Place                                                     Group, 
Inc.; prior to May 1994, Vice
 Boston, MA 02109                                                       
President, The Boston Company Advisors, Inc.
PATRICIA l. BICKINER                        Secretary                   Vice 
President and Associate General
 One Exchange Place                                                     
Counsel, The Shareholder Services Group,
 Boston, MA 02109                                                       Inc., 
prior to May 1994, Vice President and
                                                                        
Associate General Counsel, The Boston
                                                                        
Company Advisors, Inc.
<FN>
------------------------
(1)   Considered by the Trust to be "interested persons" of the Trust as 
defined
      in the 1940 Act.
(2)   Audit Committee Member.
(3)   Nominating Committee Member.
</TABLE>
    
 
   
   Two trustees of the Trust, Messrs.  Barber and Dorsett, serve as trustees  
or
directors  of other investment companies for which Lehman Brothers, LBGAM or 
one
of their affiliates serves as distributor or investment adviser.
    
 
   
   No employee of Lehman Brothers, LBGAM or TSSG receives any compensation  
from
the  Trust for acting as an officer or trustee of the Trust. The Trust pays 
each
trustee who is not a director, officer or employee of Lehman Brothers, LBGAM  
or
TSSG  or any  of their affiliates,  a fee of  $20,000 per annum  plus $1,250 
per
meeting attended and reimburses them for travel and out-of-pocket expenses.
    
 
                                       21
<PAGE>
   
   For the fiscal period ended January 31, 1994, such fees and expenses 
totalled
$9,589, $94,754 for the Trust in the aggregate. As of May 13, 1994, Trustees 
and
officers of  the  Trust as  a  group beneficially  owned  less than  1%  of  
the
outstanding shares of the Fund.
    
 
   
   By virtue of the responsibilities assumed by Lehman Brothers, LBGAM, TSSG 
and
their  affiliates under  their respective agreements  with the  Trust, the 
Trust
itself requires no employees in addition to its officers.
    
 
   
INVESTMENT ADVISER
    
   
LBGAM serves as  the investment  adviser to  the Fund.  The investment  
advisory
agreement  provides that LBGAM  is responsible for  all investment activities 
of
the Fund, including  executing portfolio strategy,  effecting Fund purchase  
and
sale  transactions  and  employs professional  portfolio  managers  and 
security
analysts who provide research for the Fund.
    
 
   
   The Investment Advisory Agreement with respect to the Funds will continue  
in
effect  for a period of two years from February 5, 1993 and thereafter from 
year
to year provided the continuance is  approved annually (i) by the Trust's  
Board
of  Trustees or (ii) by a  vote of a "majority" (as  defined in the 1940 Act) 
of
the Fund's  outstanding  voting securities,  except  that in  either  event  
the
continuance  is also approved by a majority of the Trustees of the Trust who 
are
not "interested persons" (as defined in  the 1940 Act). The Investment  
Advisory
Agreement  may be terminated (i)  on 60 days' written  notice by the Trustees 
of
the Trust, (ii)  by vote  of holders  of a  majority of  the Fund's  
outstanding
voting  securities, or upon 90 days' written notice by Lehman Brothers, or 
(iii)
automatically in the event of its assignment (as defined in the 1940 Act).
    
 
   
   As compensation for LBGAM's  services rendered to the  Fund, the Fund pays  
a
fee,  computed daily and paid monthly, at the annual rate of .30% of the 
average
daily net assets of the Fund. For  the period February 8, 1993 (commencement  
of
operations)  to  January 31,  1994, LBGAM  received net  advisory fees  equal 
to
$6,746. Waivers by LBGAM of advisory fees and reimbursement of expenses to 
which
it was  entitled amounted  to  $6,746 and  $69,533,  respectively. In  order  
to
maintain  a competitive expense  ratio during 1994  through 1997, the 
investment
adviser and administrator have agreed to  reimburse the Fund if total  
operating
expenses  exceed certain levels. See "Background and Expense Information" in 
the
Prospectus.
    
 
   
PRINCIPAL HOLDERS
    
   
At May 13, 1994, the principal holders of the Fund were as follows:
    
 
   
<TABLE>
<CAPTION>
                                                                       
PERCENTAGE OF
                                                                       SHARES 
HELD OF
                                                  NAME AND ADDRESS      RECORD 
ONLY
                                              --------------------------------
-------
<S>                                           <C>                      <C>
Class A Shares:                               University National Bank        
66.90  %
                                              and Trust (Principal
                                              Acct)
                                              P.O. Box 89
                                              Palo Alto, CA 94302
                                              Borel Bank & Trust              
19.20  %
                                              Company
                                              P.O. Box 5492
                                              160 Bovet Road
                                              San Mateo, CA 94402
                                              Lehman Brothers Inc.             
9.84  %
                                              Three World Financial
                                              Ctr.
</TABLE>
    
 
                                       22
<PAGE>
   
   As of May 13, 1994, the Class B and  Class C shares of the Fund had not  
been
offered to the public and all outstanding shares were held by Lehman Brothers.
    
 
   
   The  shareholders described  above have indicated  that they  each hold 
their
shares on behalf of various accounts and not as beneficial owners. To the 
extent
that any shareholder is the beneficial owner of more than 25% of the 
outstanding
shares of a Fund,  such shareholder may  be deemed to be  a "control person"  
of
that Fund for purposes of the 1940 Act.
    
 
   
ADMINISTRATOR AND TRANSFER AGENT
    
   
TSSG,  a subsidiary of First Data Corporation, is located at One Exchange 
Place,
Boston, Massachusetts  02109,  and  serves  as  the  Trust's  administrator  
and
transfer  agent. As  the Fund's  administrator, TSSG  has agreed  to provide 
the
following services: (i) assist generally  in supervising the Fund's  
operations,
providing  and supervising the operation of  an automated data processing 
system
to process purchase and redemption orders, providing information concerning  
the
Fund  to its shareholders of  record, handling shareholder problems, 
supervising
the services  of employees  whose principal  responsibility and  function is  
to
preserve  and strengthen  shareholder relations and  monitoring the 
arrangements
pertaining to the  Fund's agreements  with Service  Organizations; (ii)  
prepare
reports  to the Fund's shareholders  and prepare tax returns  and reports to 
and
filings with the SEC; (iii) compute the  net asset value per share of the  
Fund;
(iv)  provide the services of certain persons  who may be elected as trustees 
or
appointed as officers of the  Trust by the Board  of Trustees; and (v)  
maintain
the  registration or  qualification of  the Fund's  shares for  sale under 
state
securities laws. TSSG receives, as compensation for its services rendered  
under
an  administration  agreement, an  administrative fee,  computed daily  and 
paid
monthly, at the annual rate of .10% of the average daily net assets of the 
Fund.
TSSG  pays  Boston  Safe,  the  Fund's  custodian,  a  portion  of  its  
monthly
administration  fee  for custody  services rendered  to the  Funds. In  order 
to
maintain a competitive expense  ratio during 1994  through 1997, the  
investment
adviser  and administrator have agreed to  reimburse the Fund if total 
operating
expenses exceed certain levels. See "Background and Expense Information" in  
the
Prospectus.
    
 
   
   Prior  to  May  6,  1994,  The  Boston  Company  Advisors,  Inc.  ("TBCA"), 
a
wholly-owned  subsidiary  of  Mellon  Bank  Corporation  ("Mellon"),  served  
as
administrator  of the  Fund. On  May 6, 1994,  TSSG acquired  TBCA's third 
party
mutual fund administration business from  Mellon, and the Fund's  
administration
agreement  with  TBCA was  assigned to  TSSG.  For the  period February  8, 
1993
(commencement  of  operations)   to  January   31,  1994,   TBCA  received   
net
administration  fees equal to $6,746. Waivers by TBCA of administration fees 
and
reimbursement of  expenses to  which  it was  entitled  amounted to  $6,746  
and
$6,592, respectively.
    
 
   
   Under  the transfer agency agreement,  TSSG maintains the shareholder 
account
records for the Trust, handles  certain communications between shareholders  
and
the  Trust and distributes dividends and  distributions payable by the Trust 
and
produces statements  with respect  to account  activity for  the Trust  and  
its
shareholders.  For these services, TSSG receives  a monthly fee based on 
average
annual assets and is reimbursed for out-of-pocket expenses.
    
 
   
DISTRIBUTOR
    
   
Lehman Brothers acts as distributor of the Fund's shares. The Fund's shares  
are
sold on a continuous basis by Lehman Brothers as agent. The distributor pays 
the
cost of printing and distributing prospectuses to
    
 
                                       23
<PAGE>
   
persons who are not shareholders of the Fund (excluding preparation and 
printing
expenses  necessary for the continued registration  of the Fund's shares) and 
of
preparing, printing, and distributing all  sales literature. No compensation  
is
payable by the Fund to Lehman Brothers for its distribution services.
    
 
   Lehman  Brothers  is comprised  of  several major  operating  business 
units.
Lehman Brothers Institutional Funds  Group is the  business group within  
Lehman
Brothers  that is primarily responsible for  the distribution and client 
service
requirements of the  Trust and its  shareholders. Lehman Brothers  
Institutional
Funds Group has been serving institutional clients' investment needs 
exclusively
for  more  than 20  years, emphasizing  high  quality individualized  service 
to
clients.
 
   
CUSTODIAN
    
 
   
Boston Safe Deposit and Trust Company ("Boston Safe"), a wholly owned 
subsidiary
of  The  Boston  Company,  Inc.,  is  located  at  One  Boston  Place,   
Boston,
Massachusetts  02108, and  serves as  the custodian of  the Trust  pursuant to 
a
custody agreement. Under  the custody  agreement, Boston Safe  holds the  
Fund's
portfolio  securities  and keeps  all necessary  accounts  and records.  For 
its
services, Boston Safe  receives a monthly  fee based upon  the month-end  
market
value  of securities  held in custody  and also  receives securities 
transaction
charges, including out-of-pocket expenses. The Fund will enter into an 
agreement
with each Service Organization whose customers ("Customers") are the  
beneficial
owners  of  Class C  shares that  requires the  Service Organization  to 
provide
certain services  to Customers.  The assets  of the  Trust are  held under  
bank
custodianship in compliance with the 1940 Act.
    
 
   
SERVICE ORGANIZATIONS
    
   
As  stated in the Fund's Prospectus, the  Fund will enter into an agreement 
with
each financial institution  which may  purchase Class  C shares.  The Fund  
will
enter   into  an  agreement  with  each  Service  Organization  whose  
customers
("Customers") are the  beneficial owners  of Class  C shares  that requires  
the
Service  Organization to provide certain  services to Customers in 
consideration
of the Fund's payment of .35% of the average daily net asset value of the  
Class
C shares held by the Service Organization for the benefit of its Customers. 
Such
services  include:  (i)  aggregating  and  processing  purchase  and  
redemption
requests from customers and placing net purchase and redemption orders with  
one
of  the Fund's distributors; (ii) processing  dividend payments from the Fund 
on
behalf of  Customers;  (iii)  providing information  periodically  to  
Customers
showing their positions in shares; (iv) arranging for bank wires; (v) 
responding
to  Customer  inquiries  relating  to  the  services  performed  by  the 
Service
Organization  and   handling   correspondence;   (vi)   forwarding   
shareholder
communications  from the Fund (such as  proxies, shareholder reports, annual 
and
semi-annual financial statements and dividend, distribution and tax notices)  
to
Customers;  (vii) acting as a shareholder of record or nominee; and (viii) 
other
similar account administrative services. In addition, a Service Organization  
at
its  option, may also provide  to its Customers of Class  C shares (a) a 
service
that invests the  assets of  their accounts in  shares pursuant  to specific  
or
pre-authorized  instructions; (b) provide sub-accounting  with respect to 
shares
beneficially owned by Customers or the information necessary for sub-
accounting;
and (c) provide checkwriting services. Service Organizations that purchase 
Class
C shares will  also provide  assistance in connection  with the  support of  
the
distribution  of Class C shares to its Customers, including marketing 
assistance
and the forwarding to Customers of sales literature and advertising provided  
by
a distributor of the shares.
    
 
   
   Holders  of Class B shares of the Fund will receive the services set forth 
in
(i) and (v)  and may  receive one or  more of  the services set  forth in  
(ii),
(iii),  (iv), (vi)  and (viii)  above. In  consideration of  the services  to 
be
    
 
                                       24
<PAGE>
   
rendered in connection with this Class of shares, the Fund will pay the  
Service
Organization  .25% of the  average daily net  asset value of  the Class B 
shares
held by the  Service Organization. A  Service Organization, at  its option,  
may
also  provide to its Customers of Class  B shares services including: (a) 
acting
as shareholder of record and as nominee; (b) providing Customers with a  
service
that  invests the  assets of  their accounts in  shares pursuant  to specific 
or
pre-authorized instruction; (c)  provide sub-accounting with  respect to  
shares
beneficially owned by Customers or the information necessary for sub-
accounting;
(d)  providing information periodically  to Customers showing  their position 
in
shares; (e) arranging for bank wires; (f) forwarding shareholder  
communications
from  the Fund  (such as  proxies, shareholder  reports, annual  and semi-
annual
financial statements and dividend, distribution, and tax notices) to  
Customers;
and (h) providing such other similar services as the Fund may reasonably 
request
to  the  extent Service  Organization  is permitted  to  do so  under 
applicable
statutes, rules or regulations.
    
 
   The Fund's agreements with Service Organizations are governed by a plan  
(the
"Plan"),  which has been adopted by the Board of Trustees pursuant to 
applicable
rules and regulations  of the SEC  and an  exemptive order granted  by the  
SEC.
Under  the Plan, the  Board of Trustees  reviews, at least  quarterly, a 
written
report of  the  amounts  expended  under  the  Fund's  agreements  with  
Service
Organizations  and  the  purposes  for  which  the  expenditures  were  made. 
In
addition, the Fund's  arrangements with Service  Organizations must be  
approved
annually  by a  majority of  the Trust's trustees,  including a  majority of 
the
trustees who are not "interested persons" of  the Trust defined in the 1940  
Act
and  have no  direct or  indirect financial  interest in  such arrangements 
(the
"Disinterested Trustees").
 
   The Board  of Trustees  has  approved the  Fund's arrangements  with  
Service
Organizations  based on information  provided by the  Fund's service 
contractors
that there is  a reasonable likelihood  that the arrangements  will benefit  
the
Fund  and  its  shareholders  by  affording  the  Fund  greater  flexibility  
in
connection with the servicing  of the accounts of  the beneficial owners of  
its
shares in an efficient manner. Any material amendment to the Fund's 
arrangements
with  Service Organizations must be approved by  a majority of the Trust's 
Board
of Trustees  (including  a majority  of  the Disinterested  Trustees),  and  
any
amendment  to increase materially the costs under  the Plan adopted by the 
Board
with respect to the Class B or Class C shares must be approved by the holders 
of
a majority of  the outstanding  shares of  the relevant  Class. So  long as  
the
Fund's  arrangements with Service Organizations are in effect, the selection 
and
nomination of  the members  of the  Board of  Trustees who  are not  
"interested
persons"  (as defined  in the 1940  Act) of the  Trust will be  committed to 
the
discretion of such non-interested trustees.
 
   
   For the period February 8, 1993  (commencement of operations) to January  
31,
1994, the Fund's Class B shares paid $85 in service fees.
    
 
EXPENSES
 
   
The  Fund's expenses include  taxes, interest, fees and  salaries of the 
Trust's
trustees and officers who are not directors, officers or employees of the 
Fund's
service providers,  SEC  fees, state  securities  qualification fees,  costs  
of
preparing and printing prospectuses for regulatory purposes and for 
distribution
to  shareholders, advisory, sub-advisory and administration fees, charges of 
the
custodian, transfer agent  and dividend disbursing  agent, Service  
Organization
fees,  certain insurance premiums, outside auditing  and legal expenses, cost 
of
independent pricing  service,  costs  of  shareholder  reports  and  
shareholder
meetings  and any extraordinary expenses. The  Fund also pays for brokerage 
fees
and commissions (if any) in connection  with the purchase and sale of  
portfolio
securities.   LBGAM  and  TSSG  have  agreed   that  if,  in  any  fiscal  
year,
    
 
                                       25
<PAGE>
the expenses borne by the Fund exceed the applicable expense limitations 
imposed
by the securities  regulations of  any state  in which  shares of  the Fund  
are
registered or qualified for sale to the public, they will reimburse the Fund 
for
any excess to the extent required by such regulations. Unless otherwise 
required
by  law, such reimbursement would be accrued and paid on the same basis that 
the
advisory and administration fees are accrued and paid by the Fund. To the 
Fund's
knowledge, of the expense limitations in effect on the date of this Statement 
of
Additional Information, none  is more  restrictive than  2.5% of  the first  
$30
million  of the Fund's average annual net assets,  2% of the next $70 million 
of
the average annual net assets and 1.5% of the remaining average net assets.
 
ADDITIONAL INFORMATION CONCERNING TAXES
 
The following  summarizes  certain  additional  federal,  state  and  local  
tax
considerations generally affecting the Funds and their shareholders that are 
not
described  in the Fund's  Prospectus. No attempt  is made to  present a 
detailed
explanation of  the tax  treatment of  the  Fund or  its shareholders,  and  
the
discussion here and in the Fund's Prospectus is not intended as a substitute 
for
careful  tax planning. Investors should consult their tax advisers with 
specific
reference to their own tax situations.
 
GENERAL
 
   
The Fund is treated  as a separate corporate  entity under the Internal  
Revenue
Code  of  1986, as  amended (the  "Code"), qualified  as a  regulated 
investment
company under the Code and intends to so qualify in future years.
    
 
   As described above  and in  the Fund's Prospectus,  the Fund  is designed  
to
provide  California  institutional investors  and  their customers  with 
current
tax-exempt interest income. The  Fund is not intended  to constitute a  
balanced
investment   program  and  is   not  designed  for   investors  seeking  
capital
appreciation or  maximum  tax-exempt  income  irrespective  of  fluctuations  
in
principal.  Shares of the Fund would not be suitable for tax-exempt 
institutions
and may not be suitable for retirement plans qualified under Section 401 of  
the
Code,  H.R. 10  plans and  individual retirement  accounts since  such plans 
and
accounts are generally tax-exempt  and, therefore, would not  only not gain  
any
additional  benefit  from  the  Fund's  dividends  being  tax-exempt,  but  
such
dividends would be ultimately taxable  to the beneficiaries when distributed  
to
them.  In addition, the Fund  may not be an  appropriate investment for 
entities
which are "substantial users" of  facilities financed by private activity  
bonds
or  "related persons" thereof. "Substantial user" is defined under U.S. 
Treasury
Regulations to include  a non-exempt person  who regularly uses  a part of  
such
facilities  in his trade or  business and (i) whose  gross revenues derived 
with
respect to the facilities financed by the issuance of bonds are more than 5%  
of
the total revenues derived by all users of such facilities, or (ii) who 
occupies
more  than 5%  of the  usable area  of such  facilities or  (iii) for  whom 
such
facilities or a  part thereof  were specifically  constructed, reconstructed  
or
acquired.  "Related persons" include certain related natural persons, 
affiliated
corporations, a  partnership and  its  partners and  an  S Corporation  and  
its
shareholders.
 
   The  percentage  of total  dividends paid  by  the Fund  with respect  to 
any
taxable year which qualify as federal exempt-interest dividends will be the 
same
for all shareholders receiving dividends for such year. In order for the Fund 
to
pay exempt-interest dividends for any taxable year, at the close of each  
fiscal
quarter at least 50% of the aggregate value of the Fund's portfolio must 
consist
of  exempt-interest  obligations. In  addition,  the Fund  must  distribute 
with
respect to  each  taxable  year  an  amount  that  is  at  least  equal  to  
the
 
                                       26
<PAGE>
sum  of 90% of the  exempt-interest income net of  certain deductions and 90% 
of
the investment company taxable  income for the taxable  year. Not later than  
60
days  after the close of its taxable year, the Fund will notify each 
shareholder
of the portion of the dividends paid by the Fund to the shareholder with 
respect
to  such  taxable  year  which  constitutes  an  exempt-interest  dividend.  
The
aggregate  amount of dividends so designated  cannot, however, exceed the 
excess
of the amount of interest exempt from tax under Section 103 of the Code 
received
by the Fund during  the taxable year over  any amounts disallowed as  
deductions
under Sections 265 and 171(a)(2) of the Code.
 
   Interest  on indebtedness incurred by a  shareholder to purchase or carry 
the
Fund's shares is not deductible for federal income tax purposes if (as 
expected)
the Fund distributes exempt-interest dividends during the shareholder's  
taxable
year.
 
   While the Fund does not expect to earn any investment company taxable 
income,
any  taxable income earned by  the Fund will be  distributed to shareholders. 
In
general, the Fund's investment company taxable income will be its taxable 
income
(for example, its short-term capital  gains) subject to certain adjustments  
and
excluding the excess of any net long-term capital gain for the taxable year 
over
the net short-term capital loss, if any, for such year. Such distributions 
would
be  taxable  to  shareholders  as  ordinary  income  (whether  made  in  cash 
or
additional shares).
 
   The Fund does  not expect to  realize long-term capital  gains and  
therefore
does not expect to distribute any capital gain dividends.
 
   Dividends  declared in  October, November  or December  of any  year and 
made
payable to the Fund's shareholders of record on a specified date in such  
months
will  be deemed  for Federal income  tax purposes  to have been  received by 
the
shareholders and paid by the Fund on December 31 of such year, if such 
dividends
are actually paid during January of the following year.
 
   A 4% non-deductible excise tax  is imposed on regulated investment  
companies
that  fail to distribute  currently an amount equal  to specified percentages 
of
their ordinary taxable  income and capital  gain net income  (excess of  
capital
gains over capital losses). The Fund intends to make sufficient distributions 
or
deemed  distributions of  its ordinary taxable  income and any  capital gain 
net
income with respect  to each calendar  year to avoid  liability for this  
excise
tax.
 
   
   Although  the Fund  expects to qualify  each year as  a "regulated 
investment
company" and to be  relieved of all or  substantially all liability for  
federal
income  taxes, the  Fund may  be subject to  the tax  laws of  certain states 
or
localities, depending upon the extent of its activities in states and 
localities
in which  its  offices  are  maintained, in  which  its  agents  or  
independent
contractors are located or in which it is deemed to be conducting business.
    
 
   If  for any taxable  year the Fund  does not qualify  for the special 
federal
income tax treatment afforded regulated investment companies, all of its 
taxable
income would  be  subject to  federal  income  tax at  regular  corporate  
rates
(without  any deduction for  distributions to its  shareholders). In such 
event,
dividend distributions  (including amounts  derived from  interest on  
Municipal
Obligations)  would  be taxable  to  shareholders to  the  extent of  the 
Fund's
current or  accumulated earnings  and profits,  and would  be eligible  for  
the
dividends received deduction for corporations.
 
   The  Fund will be required in certain cases to withhold and remit to the 
U.S.
Treasury 31% of taxable  dividends or 31% of  gross proceeds realized upon  
sale
paid to shareholders who have failed to provide a
 
                                       27
<PAGE>
correct  tax identification number in the manner required, or who are subject 
to
withholding by the Internal Revenue Service  for failure properly to include  
on
their  return payments of taxable  interest or dividends, or  who have failed 
to
certify to  the  Fund that  they  are not  subject  to backup  withholding  
when
required to do so or that they are "exempt recipients."
 
   The  foregoing discussion is based on  federal tax laws and regulations 
which
are in effect on the date of this Statement of Additional Information; such 
laws
and  regulations  may  be  changed  by  legislative  or  administrative  
action.
Shareholders   are  advised  to  consult   their  tax  advisers  concerning  
the
application of state and local taxes.
 
CALIFORNIA
 
Assuming the Fund  qualifies as  a "regulated  investment company,"  it will  
be
relieved  of California franchise and income  taxes to the extent it 
distributes
its exempt-interest income, investment company taxable income and any excess  
of
net  long-term capital gain over net  short-term capital loss. It is 
anticipated
that the  Fund  will be  relieved  of all  or  substantially all  of  
California
franchise and income taxes by making such distributions.
 
   If,  at the close  of each quarter of  its taxable year, at  least 50% of 
the
value of the total assets of a regulated investment company, or series  
thereof,
consists  of obligations the interest on which is exempt from taxation under 
the
Constitution or  laws of  California  ("California Municipal  Obligations")  
and
obligations  the  interest  on which  is  exempt  from taxation  under  the 
U.S.
Constitution or  laws of  the United  States ("Federal  Obligations"), then  
the
regulated  investment company, or  series of that company,  will be qualified 
to
pay  dividends  exempt  from  California  state  personal  income  tax  to   
its
non-corporate    shareholders   (hereinafter   referred    to   as   
"California
exempt-interest dividends"). Series of a regulated investment company is 
defined
as a segregated portfolio of assets,  the beneficial interest in which is  
owned
by the holders of an exclusive class or series of stock of the company. The 
Fund
intends  to qualify under  the above requirement  so that it  can pay 
California
exempt-interest dividends.  If the  Fund fails  to so  qualify, no  part of  
its
dividends will be exempt from California state personal income tax.
 
   Not  later than 60  days after the close  of its taxable  year, the Fund 
will
notify each shareholder of the portion of the dividends paid by the Fund to  
the
shareholder  with respect to  such taxable year which  is exempt from 
California
state personal  income  tax.  The total  amount  of  California  exempt-
interest
dividends  paid by the Fund to its shareholders with respect to any taxable 
year
cannot exceed the excess of the amount  of interest received by the Fund  
during
such  year on California Municipal Obligations  and Federal Obligations over 
any
amounts that, if  the Fund were  treated as an  individual, would be  
considered
expenses  related to  tax-exempt income and  would thus not  be deductible 
under
Federal income or California  state personal income tax  law. The percentage  
of
total  dividends  paid  by the  Fund  with  respect to  any  taxable  year 
which
qualifies as  California exempt-interest  dividends  will be  the same  for  
all
shareholders receiving dividends from the Fund with respect to such year.
 
   In cases where shareholders are "substantial users" or "related persons" 
with
respect  to California Municipal Obligations held by the Fund, such 
shareholders
should  consult   their   tax   advisers   to   determine   whether   
California
exempt-interest  dividends paid  by the  Fund with  respect to  such 
obligations
retain their California state personal income tax exclusion. In this  
connection
rules  similar  to  those  regarding  the  possible  unavailability  of  
federal
exempt-interest dividend  treatment to  "substantial users"  are applicable  
for
California  state tax purposes. See  "Additional Information Concerning Taxes 
--
General" above.
 
                                       28
<PAGE>
   To the  extent, if  any,  dividends paid  to  shareholders are  derived  
from
long-term  and  short-term capital  gains,  such dividends  will  not 
constitute
California exempt-interest  dividends.  Rules  similar to  those  regarding  
the
treatment  of such dividends for Federal income tax purposes are also 
applicable
for California state personal income  tax purposes. See "Additional  
Information
Concerning  Taxes -- General." Moreover, interest  on indebtedness incurred by 
a
shareholder to  purchase or  carry shares  of  the Fund  is not  deductible  
for
California state personal income tax purposes if the particular Fund 
distributes
California  exempt-interest  dividends  to  the shareholder  during  his  or 
her
taxable year.
 
   The foregoing is  only a summary  of some of  the important California  
state
personal  income  tax  considerations  generally  affecting  the  Fund  and  
its
shareholders. No  attempt is  made  to present  a  detailed explanation  of  
the
California  state personal income tax treatment of the Fund or its 
shareholders,
and this  discussion is  not  intended as  a  substitute for  careful  
planning.
Further,   it  should  be  noted  that  the  portion  of  the  Fund's  
dividends
constituting California exempt-interest dividends is excludable from income  
for
California  state  personal  income tax  purposes  only. Any  dividends  paid 
to
shareholders of the Fund subject to California state franchise tax or 
California
state corporate  income  tax  will  be  taxed  as  ordinary  dividends  to  
such
shareholders,  notwithstanding that all or a portion of such dividends is 
exempt
from California state personal income  tax. Accordingly, potential investors  
in
the  Fund, including, in particular, corporate investors which may be subject 
to
either California  franchise  tax or  California  corporate income  tax,  
should
consult  their tax advisers with respect to the application of such taxes to 
the
receipt of  the  Fund's dividends  and  as to  their  own California  state  
tax
situation, in general.
 
DIVIDENDS
 
Net  income for dividend purposes consists  of (i) interest accrued and 
original
issue discount earned on the Fund's  assets for the applicable dividend  
period,
less  (ii)  amortization  of market  premium  on such  assets,  accrued 
expenses
directly attributable  to  the  Fund  and the  general  expenses  (E.G.,  
legal,
accounting and trustees' fees) of the Trust prorated to the Fund on the basis 
of
its  relative  net assets.  The amortization  of market  discount on  the 
Fund's
assets is not included in the calculation of net income.
 
   Realized  and  unrealized  gains  and  losses  on  portfolio  securities  
are
reflected in net asset value. In addition, the Fund's Class B and Class C 
shares
bear  exclusively the expense of fees paid to Service Organizations with 
respect
to  each  such  Class  of  shares.  See  "Management  of  the  Fund  --  
Service
Organizations."
 
   As  stated, the Trust uses  its best efforts to  maintain the net asset 
value
per share of the Fund at $1.00. As a result of a significant expense or 
realized
or unrealized loss  incurred by the  Fund, it  is possible that  the Fund's  
net
asset value per share may fall below $1.00.
 
ADDITIONAL YIELD INFORMATION
 
The  "yields,"  "effective yields"  and  "tax-equivalent yields"  are 
calculated
separately for each  Class of the  Fund's shares. The  seven-day yield for  
each
Class  of shares is calculated  by determining the net change  in the value of 
a
hypothetical preexisting account in  the Fund having a  balance of one share  
of
the  Class involved at the  beginning of the period,  dividing the net change 
by
the value of  the account  at the  beginning of the  period to  obtain the  
base
period  return, and multiplying the base period  return by 365/7. The net 
change
in
 
                                       29
<PAGE>
the  value of  an account in  the Fund  includes the value  of additional 
shares
purchased with dividends from the original  share and dividends declared on  
the
original  share and any such  additional shares, net of  all fees charged to 
all
shareholder accounts in  proportion to  the length of  the base  period and  
the
Fund's average account size, but does not include gains and losses or 
unrealized
appreciation and depreciation. In addition, the effective yield is calculated 
by
compounding  the unannualized base  period return for  each Class (calculated 
as
above) by adding one to the base period return for the Fund, raising that sum 
to
a power equal to  365/7, and subtracting one  from the result. A  tax-
equivalent
yield  for each  Class of  the Fund's  shares is  computed by:  (a) dividing 
the
portion of  the yield  for the  series involved  (calculated as  above) that  
is
exempt from both federal and California State income taxes by one minus a 
stated
combined  federal and California State income tax rate; (b) dividing the 
portion
of the yield for the series involved  (calculated as above) that is exempt  
from
federal  income tax only by one minus a  stated federal income tax rate; and 
(c)
adding the figures resulting from (a) and (b) above to that portion, if any,  
of
the  yield for the series  involved that is not  exempt from federal income 
tax.
Similarly, based  on the  calculations described  above, 30-day  (or  one-
month)
yields, effective yields and tax-equivalent yields may also be calculated.
 
   
   For  the 7-day period ended January 31, 1994  the yield for Class A shares 
of
the Fund was 2.17% and the effective  yield was 2.19%. The tax equivalent  
yield
for  the Class A shares for this period was 3.17% assuming a maximum federal 
tax
rate of 31% and a California state tax rate of 9.3%. Without such fee waivers 
or
expense reimbursements the 7-day yield,  effective and tax equivalent yield  
for
Class A shares of the Fund would have been 2.04%, 2.06% and 2.99%, 
respectively.
    
 
   
   For  the 30-day period ended  January 31, 1994 the  yield and effective 
yield
for Class  A shares  of  the Fund  was 2.13%  and  ___%, respectively.  The  
tax
equivalent  yield for the  Class A shares  for this period  was 3.09% assuming 
a
maximum federal tax rate of 31% and a California state tax rate of 9.3%. 
Without
such fee waivers or expense reimbursements the 30-day yield, effective tax 
yield
and tax equivalent yield for Class A  shares of the Fund would have been  
2.00%,
___% and 2.90%, respectively.
    
 
   
   Class  B  and  Class C  shares  bear the  expenses  of fees  paid  to 
Service
Organizations. As a result, at any given time, the net yield of the Class B  
and
Class  C shares could be up to .25% and .35% lower than the net yield of Class 
A
shares, respectively. The Class B and Class C shares did not have activity as 
of
January 31,  1994 and,  accordingly,  yield information  is not  available  
with
respect to such classes of shares.
    
 
   From time to time, in advertisements or in reports to shareholders, the 
yield
of  the Fund  may be  quoted and compared  to those  of other  mutual funds 
with
similar investment  objectives  and to  stock  or other  relevant  indices.  
For
example, the yields of the Fund may be compared to the Donoghue's IBC/MONEY 
FUND
AVERAGE,  which is  an average  compiled by  Donoghue's MONEY  FUND REPORT-R- 
of
Holliston, MA 01746, a widely  recognized independent publication that  
monitors
the  performance  of money  market  funds, or  to  the data  prepared  by 
Lipper
Analytical Services, Inc., a widely-recognized independent service that 
monitors
the performance of mutual funds.
 
   Yield will fluctuate, and any quotation of yield should not be considered  
as
representative  of the future  performance of the  Fund. Since yields 
fluctuate,
yield data cannot  necessarily be used  to compare an  investment in the  
Fund's
shares  with bank deposits, savings accounts and similar investment 
alternatives
which often provide an agreed or guaranteed  fixed yield for a stated period  
of
time.  Shareholders should  remember that yield  is generally a  function of 
the
kind   and    quality    of   the    investments    held   in    a    
portfolio,
 
                                       30
<PAGE>
portfolio  maturity, operating expenses and  market conditions. Any fees 
charged
by banks  or other  financial  institutions with  respect to  customer  
accounts
investing  in shares of the Fund will  not be included in calculations of 
yield;
such fees, if charged, would reduce the actual yield from that quoted.
 
ADDITIONAL DESCRIPTION CONCERNING SHARES
 
The Trust does  not presently  intend to  hold annual  meetings of  
shareholders
except  as  required by  the 1940  Act or  other applicable  law. The  law 
under
certain circumstances provides shareholders with the right to call for a 
meeting
of shareholders to consider the removal of  one or more trustees. To the  
extent
required  by the law, the Trust will assist in shareholder communication in 
such
matters.
 
   As stated in the Fund's Prospectus, holders  of shares in the Fund will  
vote
in  the  aggregate and  not  by class  or series  on  all matters,  except 
where
otherwise required by law and  except that only the Fund's  Class B and Class  
C
shares,  as the case may be, will be  entitled to vote on matters submitted to 
a
vote  of  shareholders  pertaining  to  the  Fund's  arrangements  with  
Service
Organizations  with respect to the relevant Class of shares. (See "Management 
of
the Fund--Service Organizations.") Further, shareholders  of all of the  
Trust's
portfolios  will vote in the aggregate and  not by portfolio except as 
otherwise
required by law or when the Board  of Trustees determines that the matter to  
be
voted  upon  affects only  the  interests of  the  shareholders of  a 
particular
portfolio. Rule 18f-2 under the 1940 Act provides that any matter required to 
be
submitted by the provisions of such  Act or applicable state law, or  
otherwise,
to  the holders of the  outstanding securities of an  investment company such 
as
the Trust  shall  not be  deemed  to have  been  effectively acted  upon  
unless
approved  by  the  holders of  a  majority  of the  outstanding  shares  of 
each
portfolio affected by the matter. Rule  18f-2 further provides that a  
portfolio
shall be deemed to be affected by a matter unless it is clear that the 
interests
of each portfolio in the matter are identical or that the matter does not 
affect
any  interest of  the portfolio.  Under the Rule  the approval  of an 
investment
advisory agreement or  any change in  a fundamental investment  policy would  
be
effectively  acted upon  with respect  to a  portfolio only  if approved  by 
the
holders of a majority  of the outstanding voting  securities of such  
portfolio.
However,  the  Rule also  provides  that the  ratification  of the  selection 
of
independent certified public accountants, the approval of principal 
underwriting
contracts and the election  of trustees are not  subject to the separate  
voting
requirements and may be effectively acted upon by shareholders of the 
investment
company voting without regard to portfolio.
 
COUNSEL
 
   
Willkie  Farr & Gallagher, One Citicorp Center,  153 East 53rd Street, New 
York,
New York 10022, serves as counsel for the Trust and will pass upon the  
legality
of the shares offered hereby. Willkie Farr & Gallagher also serves as counsel 
to
Lehman Brothers.
    
 
AUDITORS
 
   
Ernst & Young, independent auditors, serve as auditors to the Fund and render 
an
opinion  on the Fund's financial statements  annually. Ernst & Young has 
offices
at 200 Clarendon Street, Boston, Massachusetts 02116-5072.
    
 
                                       31
<PAGE>
   
FINANCIAL STATEMENTS
    
 
   
The Trust's  Annual Report  for the  fiscal  period ended  January 31,  1994  
is
incorporated into this Statement of Information by reference in its entirety.
    
 
MISCELLANEOUS
 
SHAREHOLDER VOTE
 
As used in this Statement of Additional Information and the Fund's Prospectus, 
a
"majority of the outstanding shares" of the Fund or of any other portfolio 
means
the  lesser of  (1) 67% of  the Fund's shares  (irrespective of class),  or of 
a
portfolio represented at a meeting at which the holders of more than 50% of  
the
outstanding  shares of the  Fund or such  portfolio are present  in person or 
by
proxy, or (2) more  than 50% of the  Fund's outstanding shares (irrespective  
of
class) or of the portfolio.
 
SHAREHOLDER AND TRUSTEE LIABILITY
 
The  Trust  is  organized as  a  trust under  the  laws of  the  Commonwealth 
of
Massachusetts. Shareholders of such a trust may, under certain circumstances, 
be
held personally liable  (as if they  were partners) for  the obligations of  
the
trust.  The Declaration of  Trust of the Trust  provides that shareholders 
shall
not be subject  to any personal  liability for  the acts or  obligations of  
the
Trust  and that every note,  bond, contract, order or  other undertaking made 
by
the Trust shall contain a provision to the effect that the shareholders are  
not
personally   liable   thereunder.  The   Declaration   of  Trust   provides  
for
indemnification out of the trust property of the Fund of any shareholder of  
the
Fund  held  personally  liable  solely  by reason  of  being  or  having  been 
a
shareholder and not because of any acts  or omissions or some other reason.  
The
Declaration  of Trust also  provides that the Trust  shall, upon request, 
assume
the defense of any claim made against any shareholder for any act or  
obligation
of  the  Trust  and satisfy  any  judgment thereon.  Thus,  the risk  of  a 
Fund
shareholder's incurring financial loss beyond the amount invested on account  
of
shareholder liability is limited to circumstances in which the Fund itself 
would
be unable to meet its obligations.
 
   The  Trust's Declaration  of Trust  provides further  that no  trustee of 
the
Trust shall be personally liable for or on account of any contract, debt,  
tort,
claim,  damage,  judgment  or  decree  arising  out  of  or  connected  with 
the
administration or  preservation  of the  trust  estate  or the  conduct  of  
any
business  of the Trust, nor shall any trustee be personally liable to any 
person
for any  action  or failure  to  act except  by  reason of  bad  faith,  
willful
misfeasance,  gross negligence  in performing duties,  or by  reason of 
reckless
disregard for the obligations and duties  as trustee. It also provides that  
all
persons  having any claim against the trustees or the Trust shall look solely 
to
the trust property for payment. With  the exceptions stated, the Declaration  
of
Trust  provides  that  a  trustee  is entitled  to  be  indemnified  against 
all
liabilities and expenses reasonably incurred  in connection with the defense  
or
disposition  of any proceeding  in which the  trustee may be  involved or may 
be
threatened with  by reason  of being  or having  been a  trustee, and  that  
the
trustees  have the power, but not the  duty, to indemnify officers and 
employees
of the Trust  unless such persons  would not be  entitled to indemnification  
if
they were in the position of trustee.
 
                                       32
<PAGE>
APPENDIX
DESCRIPTION OF MUNICIPAL SECURITIES RATINGS
 
COMMERCIAL PAPER RATINGS
 
A  Standard &  Poor's commercial  paper rating  is a  current assessment  of 
the
likelihood of timely payment of debt having an original maturity of no more 
than
365 days. The following  summarizes the rating categories  used by Standard  
and
Poor's for commercial paper:
 
   A-1  -- Issue's  degree of safety  regarding timely payment  is strong. 
Those
issues determined to possess extremely strong safety characteristics are 
denoted
"A-1+."
 
   A-2 --  Issue's capacity  for timely  payment is  satisfactory. However,  
the
relative degree of safety is not as high as for issues designated "A-l."
 
   A-3  -- Issue has  an adequate capacity  for timely payment.  It is, 
however,
somewhat more vulnerable  to the  adverse effects of  changes and  
circumstances
than an obligation carrying a higher designation.
 
   B -- Issue has only a speculative capacity for timely payment.
 
   C -- Issue has a doubtful capacity for payment.
 
   D -- Issue is in payment default.
 
   Moody's  commercial paper ratings  are opinions of the  ability of issuers 
to
repay punctually  promissory  obligations not  having  an original  maturity  
in
excess  of  9 months.  The following  summarizes the  rating categories  used 
by
Moody's for commercial paper:
 
   PRIME-1 -- Issuer or related supporting institutions are considered to have 
a
superior capacity for repayment of short-term promissory obligations.  
Principal
repayment  capacity will normally be evidenced by the following 
characteristics:
leading market positions in well established industries; high rates of return 
on
funds employed; conservative capitalization structures with moderate reliance 
on
debt and ample  asset protection;  broad margins  in earning  coverage of  
fixed
financial charges and high internal cash generation; and well established 
access
to a range of financial markets and assured sources of alternate liquidity.
 
   PRIME-2 -- Issuer or related supporting institutions are considered to have 
a
strong  capacity for repayment  of short-term promissory  obligations. This 
will
normally be evidenced by many of the characteristics cited above but to a 
lesser
degree. Earnings trends and coverage ratios,  while sound, will be more  
subject
to  variation. Capitalization  characteristics, while still  appropriate, may 
be
more affected by external conditions. Ample alternative liquidity is 
maintained.
 
   PRIME-3 --  Issuer  or related  supporting  institutions have  an  
acceptable
capacity  for  repayment of  short-term promissory  obligations. The  effects 
of
industry  characteristics  and  market  composition  may  be  more   
pronounced.
Variability  in earnings and profitability may result in changes in the level 
of
debt protection measurements and the  requirement for relatively high  
financial
leverage. Adequate alternate liquidity is maintained.
 
   NOT PRIME -- Issuer does not fall within any of the Prime rating 
categories.
 
                                      A-1
<PAGE>
   The  three rating categories of Duff & Phelps for investment grade 
commercial
paper are  "Duff  1,"  "Duff 2"  and  "Duff  3." Duff  &  Phelps  employs  
three
designations,  "Duff  1+," "Duff  1" and  "Duff 1-,"  within the  highest 
rating
category. The following summarizes the rating  categories used by Duff &  
Phelps
for commercial paper:
 
   DUFF  1+ --  Debt possesses highest  certainty of  timely payment. Short-
term
liquidity, including  internal operating  factors and/or  access to  
alternative
sources  of  funds, is  outstanding,  and safety  is  just below  risk-free 
U.S.
Treasury short-term obligations.
 
   DUFF 1 --  Debt possesses very  high certainty of  timely payment.  
Liquidity
factors are excellent and supported by good fundamental protection factors. 
Risk
factors are minor.
 
   DUFF 1- -- Debt possesses high certainty of timely payment. Liquidity 
factors
are  strong and supported  by good fundamental  protection factors. Risk 
factors
are very small.
 
   DUFF 2 -- Debt possesses good certainty of timely payment. Liquidity  
factors
and  company fundamentals are sound. Although  ongoing funding needs may 
enlarge
total financing requirements, access  to capital markets  is good. Risk  
factors
are small.
 
   DUFF 3 -- Debt possesses satisfactory liquidity, and other protection 
factors
qualify  issue as investment grade. Risk factors  are larger and subject to 
more
variation. Nevertheless, timely payment is expected.
 
   DUFF 4 -- Debt possesses speculative investment characteristics.
 
   DUFF 5  -- Issuer  has failed  to meet  scheduled principal  and/or  
interest
payments.
 
   Fitch short-term ratings apply to debt obligations that are payable on 
demand
or  have original maturities of up to  three years. The following summarizes 
the
rating categories used by Fitch for short-term obligations:
 
   F-1+ --  Securities  possess  exceptionally  strong  credit  quality.  
Issues
assigned  this rating are  regarded as having the  strongest degree of 
assurance
for timely payment.
 
   F-1 -- Securities possess  very strong credit  quality. Issues assigned  
this
rating  reflect an assurance of timely payment only slightly less in degree 
than
issues rated "F-1+."
 
   F-2 -- Securities possess  good credit quality.  Issues carrying this  
rating
have  a satisfactory degree of  assurance for timely payment,  but the margin 
of
safety is not as great as the "F-1+" and "F-1" categories.
 
   F-3 -- Securities possess  fair credit quality.  Issues assigned this  
rating
have  characteristics suggesting that the degree of assurance for timely 
payment
is adequate; however, near-term adverse changes could cause those securities  
to
be rated below investment grade.
 
   F-S  -- Securities possess  weak credit quality.  Issues assigned this 
rating
have characteristics suggesting a minimal degree of assurance for timely 
payment
and are  vulnerable  to near-term  adverse  changes in  financial  and  
economic
conditions.
 
   D -- Securities are in actual or imminent payment default.
 
                                      A-2
<PAGE>
   Fitch  may also use the symbol "LOC"  with its short-term ratings to 
indicate
that the rating is based upon a letter of credit issued by a commercial bank.
 
CORPORATE AND MUNICIPAL LONG-TERM DEBT RATINGS
 
The following summarizes the ratings used by Standard & Poor's for corporate 
and
municipal debt:
 
   AAA -- This designation represents the highest rating assigned by Standard  
&
Poor's  to a debt obligation  and indicates an extremely  strong capacity to 
pay
interest and repay principal.
 
   AA -- Debt is considered to have  a very strong capacity to pay interest  
and
repay principal and differs from AAA issues only in small degree.
 
   A  -- Debt is considered to have a  strong capacity to pay interest and 
repay
principal although  such issues  are somewhat  more susceptible  to the  
adverse
effects  of  changes  in  circumstances and  economic  conditions  than  debt 
in
higher-rated categories.
 
   BBB -- Debt is regarded  as having an adequate  capacity to pay interest  
and
repay  principal.  Whereas  such  issues  normally  exhibit  adequate 
protection
parameters, adverse  economic  conditions  or changing  circumstances  are  
more
likely  to lead to a  weakened capacity to pay  interest and repay principal 
for
debt in this category than in higher-rated categories.
 
   BB, B,  CCC, CC,  AND  C --  Debt  that possesses  one  of these  ratings  
is
regarded,  on balance, as predominantly speculative  with respect to capacity 
to
pay interest and repay principal in accordance with the terms of the 
obligation.
"BB" indicates the lowest  degree of speculation and  "C" the highest degree  
of
speculation.  While  such  debt will  likely  have some  quality  and 
protective
characteristics, these  are  outweighed by  large  uncertainties or  major  
risk
exposures to adverse conditions.
 
   CI  -- This rating is reserved for income bonds on which no interest is 
being
paid.
 
   D --  Debt  is  in default,  and  payment  of interest  and/or  repayment  
of
principal is in arrears.
 
   PLUS  (+) OR MINUS (-) -- The ratings from "AA" through "CCC" may be 
modified
by the addition of  a plus or  minus sign to show  relative standing within  
the
major rating categories.
 
   The  following  summarizes  the ratings  used  by Moody's  for  corporate 
and
municipal long-term debt:
 
   AAA -- Bonds are judged  to be of the best  quality. They carry the  
smallest
degree of investment risk and are generally referred to as "gilt edge." 
Interest
payments  are protected  by a  large or  by an  exceptionally stable  margin 
and
principal is secure. While the various protective elements are likely to 
change,
such changes as can be visualized are most unlikely to impair the  
fundamentally
strong position of such issues.
 
   AA  -- Bonds are judged to be of high quality by all standards. Together 
with
the "Aaa" group they comprise what are generally known as high grade bonds. 
They
are rated lower than the best bonds because margins of protection may not be  
as
large  as in "Aaa"  securities or fluctuation  of protective elements  may be 
of
greater amplitude  or  there  may  be other  elements  present  which  make  
the
long-term risks appear somewhat larger than in "Aaa" securities.
 
                                      A-3
<PAGE>
   A  --  Bonds  possess many  favorable  investment  attributes and  are  to 
be
considered as  upper  medium  grade  obligations.  Factors  giving  security  
to
principal and interest are considered adequate but elements may be present 
which
suggest a susceptibility to impairment sometime in the future.
 
   BAA  --  Bonds considered  medium-grade obligations,  i.e., they  are 
neither
highly protected nor  poorly secured. Interest  payments and principal  
security
appear  adequate for the present but  certain protective elements may be 
lacking
or may be  characteristically unreliable  over any  great length  of time.  
Such
bonds  lack outstanding investment characteristics  and in fact have 
speculative
characteristics as well.
 
   BA, B, CAA,  CA, AND C  -- Bonds that  possess one of  these ratings  
provide
questionable   protection  of  interest  and   principal  ("Ba"  indicates  
some
speculative elements;  "B"  indicates  a  general  lack  of  characteristics  
of
desirable   investment;  "Caa"  represents  a  poor  standing;  "Ca"  
represents
obligations which  are speculative  in a  high degree;  and "C"  represents  
the
lowest rated class of bonds). "Caa," "Ca" and "C" bonds may be in default.
 
   CON.  (---) -- Bonds  for which the  security depends upon  the completion 
of
some act or the fulfillment of some condition are rated conditionally. These 
are
bonds secured by (a)  earnings of projects under  construction, (b) earnings  
of
projects  unseasoned  in  operation  experience, (c)  rentals  which  begin 
when
facilities are completed, or (d) payments to which some other limiting 
condition
attaches. Parenthetical rating denotes  probable credit stature upon  
completion
of construction or elimination of basis of condition.
 
   Moody's applies numerical modifiers 1, 2 and 3 in each generic 
classification
from  "Aa" to "B" in  its bond rating system. The  modifier 1 indicates that 
the
security ranks in the higher end of its generic rating category; the modifier  
2
indicates a mid-range ranking; and the modifier 3 indicates that the issue 
ranks
at the lower end of its generic rating category.
 
   The  following summarizes the ratings used by Duff & Phelps for corporate 
and
municipal long-term debt:
 
   AAA -- Debt  is considered  to be  of the  highest credit  quality. The  
risk
factors  are  negligible,  being  only slightly  more  than  for  risk-free 
U.S.
Treasury debt.
 
   AA --  Debt is  considered of  high credit  quality. Protection  factors  
are
strong.  Risk  is modest  but may  vary slightly  from time  to time  because 
of
economic conditions.
 
   A --  Debt  possesses protection  factors  which are  average  but  
adequate.
However,  risk  factors are  more variable  and greater  in periods  of 
economic
stress.
 
   BBB -- Debt possesses  below average Protection  factors but such  
protection
factors  are still  considered sufficient  for prudent  investment. 
Considerable
variability in risk is present during economic cycles.
 
   BB, B,  CCC, DD,  AND DP  --  Debt that  possesses one  of these  ratings  
is
considered  to be below investment grade.  Although below investment grade, 
debt
rated "BB"  is  deemed likely  to  meet obligations  when  due. Debt  rated  
"B"
possesses  the risk that obligations will not  be met when due. Debt rated 
"CCC"
is well below  investment grade and  has considerable uncertainty  as to  
timely
payment  of principal,  interest or  preferred dividends.  Debt rated  "DD" is 
a
defaulted debt obligation, and the  rating "DP" represents preferred stock  
with
dividend arrearages.
 
                                      A-4
<PAGE>
   To provide more detailed indications of credit quality, the "AA," "A," 
"BBB,"
"BB"  and "B" ratings may be modified by the addition of a plus (+) or minus 
(-)
sign to show relative standing within these major categories.
 
   The following summarizes the highest four ratings used by Fitch for 
corporate
and municipal bonds:
 
   AAA -- Bonds  considered to  be investment grade  and of  the highest  
credit
quality.  The obligor  has an exceptionally  strong ability to  pay interest 
and
repay principal,  which is  unlikely to  be affected  by reasonably  
foreseeable
events.
 
   AA  --  Bonds considered  to  be investment  grade  and of  very  high 
credit
quality. The  obligor's ability  to pay  interest and  repay principal  is  
very
strong,  although not quite as strong as  bonds rated "AAA." Because bonds 
rated
in the "AAA" and "AA" categories are not significantly vulnerable to 
foreseeable
future developments, short-term debt of these issuers is generally rated "F-
1+."
 
   A -- Bonds considered to be investment grade and of high credit quality.  
The
obligor's  ability  to pay  interest  and repay  principal  is considered  to 
be
strong, but may be more vulnerable to adverse changes in economic conditions 
and
circumstances than bonds with higher ratings.
 
   BBB -- Bonds  considered to be  investment grade and  of satisfactory  
credit
quality. The obligor's ability to pay interest and repay principal is 
considered
to  be  adequate.  Adverse  changes in  economic  conditions  and 
circumstances,
however, are  more  likely  to  have  an adverse  impact  on  these  bonds,  
and
therefore, impair timely payment. The likelihood that the ratings of these 
bonds
will fall below investment grade is higher than for bonds with higher ratings.
 
   BB,  B, CCC, CC, C, DDD, DD, AND D -- Bonds that possess one of these 
ratings
are considered by Fitch to be  speculative investments. The ratings "BB" to  
"C"
represent  Fitch's assessment of  the likelihood of  timely payment of 
principal
and interest in accordance with the terms  of obligation for bond issues not  
in
default.  For defaulted bonds, the  rating "DDD" to "D"  is an assessment of 
the
ultimate recovery value through reorganization or liquidation.
 
   To provide more  detailed indications  of credit quality,  the Fitch  
ratings
from  and including "AA" to "C" may be modified by the addition of a plus (+) 
or
minus (-) sign to show relative standing within these major rating categories.
 
MUNICIPAL NOTE RATINGS
 
A Standard and Poor's rating reflects  the liquidity concerns and market  
access
risks  unique to notes due in three  years or less. The following summarizes 
the
ratings used by Standard & Poor's Corporation for municipal notes:
 
   SP-1 -- The issuers  of these municipal notes  exhibit very strong or  
strong
capacity  to  pay principal  and interest.  Those  issues determined  to 
possess
overwhelming safety characteristics are given a plus (+) designation.
 
   SP-2 -- The issuers of these municipal notes exhibit satisfactory capacity 
to
pay principal and interest.
 
   SP-3 -- The issuers of these municipal notes exhibit speculative capacity  
to
pay principal and interest.
 
                                      A-5
<PAGE>
   Moody's  ratings for state and municipal notes and other short-term loans 
are
designated Moody's Investment Grade ("MIG") and variable rate demand 
obligations
are  designated  Variable  Moody's  Investment  Grade  ("VMIG").  Such   
ratings
recognize the differences between short-term credit risk and long-term risk. 
The
following  summarizes  the  ratings  by  Moody's  Investors  Service,  Inc.  
for
short-term notes:
 
   MIG-1/VMIG-1 --  Loans bearing  this  designation are  of the  best  
quality,
enjoying strong protection by established cash flows, superior liquidity 
support
or demonstrated broad-based access to the market for refinancing.
 
   MIG-2/VMIG-2  -- Loans  bearing this  designation are  of high  quality, 
with
margins of protection ample although not so large as in the preceding group.
 
   MIG-3/VMIG-3 -- Loans bearing this designation are of favorable quality, 
with
all security elements accounted for but  lacking the undeniable strength of  
the
preceding  grades. Liquidity and  cash flow protection may  be narrow and 
market
access for refinancing is likely to be less well established.
 
   MIG-4/VMIG-4 --  Loans  bearing this  designation  are of  adequate  
quality,
carrying specific risk but having protection commonly regarded as required of 
an
investment security and not distinctly or predominantly speculative.
 
   SG  -- Loans  bearing this  designation are  of speculative  quality and 
lack
margins of protection.
 
   Fitch uses the  short-term ratings described  under Commercial Paper  
Ratings
for municipal notes.
 
                                      A-6


<PAGE>
100% GOVERNMENT OBLIGATIONS MONEY MARKET FUND
100% TREASURY INSTRUMENTS MONEY MARKET FUND
 
INVESTMENT PORTFOLIOS OFFERED BY LEHMAN BROTHERS INSTITUTIONAL FUNDS GROUP 
TRUST
 
<TABLE>
<S>                                        <C>
   STATEMENT OF ADDITIONAL INFORMATION
</TABLE>
 
   
                                                                    MAY __, 
1994
    
 
   
   This  Statement of Additional Information is  meant to be read in 
conjunction
with the Prospectuses for 100% Government Obligations Money Market Fund and 
100%
Treasury Instruments Money Market  Fund, each dated May  __, 1994 as amended  
or
supplemented from time to time, and is incorporated by reference in its 
entirety
into those Prospectuses. Because this Statement of Additional Information is 
not
itself  a prospectus,  no investment  in shares  of 100%  Government 
Obligations
Money Market Fund or 100% Treasury Instruments Money Market Fund should be  
made
solely  upon the  information contained herein.  Copies of  the Prospectuses 
for
100% Government  Obligations Money  Market Fund  and 100%  Treasury  
Instruments
Money  Market Fund shares may be obtained by calling Lehman Brothers, a 
division
of Lehman  Brothers Inc.  ("Lehman  Brothers"), at  1-800-368-5556.  
Capitalized
terms used but not defined herein have the same meanings as in the 
Prospectuses.
    
 
TABLE OF CONTENTS
 
   
<TABLE>
<CAPTION>
                                                        Page
                                                        ---
 <S>                                                    <C>
 The Trust.........................................      2
 Investment Objective and Policies.................      2
 Additional Purchase and Redemption Information....      5
 Management of the Funds...........................      7
 Additional Information Concerning Taxes...........     13
 Dividends.........................................     14
 Additional Yield Information......................     15
 Additional Description Concerning Fund Shares.....     16
 Counsel...........................................     17
 Auditors..........................................     17
 Financial Statements..............................     17
 Miscellaneous.....................................     17
</TABLE>
    
<PAGE>
THE TRUST
 
   
Lehman  Brothers Institutional  Funds Group  Trust (the  "Trust") is  a no-
load,
open-end management investment company. The Trust currently includes a family 
of
money market  and  non-money  market  portfolios, two  of  which  are  the  
100%
Government  Obligations Money  Market Fund  and 100%  Treasury Instruments 
Money
Market Fund portfolios (individually, a "Fund", and collectively, the 
"Funds").
    
 
   
   The obligations held  by 100%  Government Obligations Money  Market Fund  
are
limited to obligations issued or guaranteed by the U.S. Government, its 
agencies
or  instrumentalities. The obligations  held by 100%  Treasury Instruments 
Money
Market Fund  are  limited  to  U.S.  Treasury  bills,  notes  and  other  
direct
obligations  of  the U.S.  Treasury. Although  the Funds  and the  Trust's 
other
portfolios have  the  same investment  adviser  and have  comparable  
investment
objectives,  the  Funds  differ  in  that  they  may  not  engage  in 
repurchase
agreements; their yields normally will differ due to their differing cash  
flows
and differences in the specific portfolio securities held.
    
 
   
   THIS  STATEMENT OF ADDITIONAL INFORMATION  AND THE FUNDS' PROSPECTUSES 
RELATE
PRIMARILY TO THE FUNDS AND DESCRIBE ONLY THE INVESTMENT OBJECTIVE AND  
POLICIES,
OPERATIONS, CONTRACTS AND OTHER MATTERS RELATING TO THE FUNDS. INVESTORS 
WISHING
TO  OBTAIN SIMILAR INFORMATION REGARDING THE TRUST'S OTHER PORTFOLIOS MAY 
OBTAIN
SEPARATE PROSPECTUSES DESCRIBING THOSE PORTFOLIOS BY CONTACTING LEHMAN  
BROTHERS
AT 1-800-368-5556.
    
 
INVESTMENT OBJECTIVE AND POLICIES
 
   
As  stated in the Funds' Prospectuses, the  investment objective of the Funds 
is
to provide  current  income  with  liquidity  and  security  of  principal.  
The
following  policies  supplement  the  description  in  the  Prospectuses  of 
the
investment objectives and policies of the Funds.
    
 
   
   The Funds  are  managed  to  provide stability  of  capital  while  
achieving
competitive  yields. The investment adviser  intends to follow a value-
oriented,
research-driven and risk-averse investment strategy, engaging in a full range 
of
economic,  strategic,  credit  and   market-specific  analyses  in   
researching
potential investment opportunities.
    
 
PORTFOLIO TRANSACTIONS
 
   
Subject  to the  general control  of the  Trust's Board  of Trustees  and 
Lehman
Brothers Global Asset Management Inc. ("LBGAM"), the Funds' investment  
adviser,
is  responsible for, makes decisions  with respect to and  places orders for 
all
purchases and sales of portfolio securities  for the Funds. Purchases and  
sales
of  portfolio securities  are usually  principal transactions  without 
brokerage
commissions. In making portfolio investments, LBGAM seeks to obtain the best 
net
price and  the  most favorable  execution  of orders.  To  the extent  that  
the
execution  and price offered by more than  one dealer are comparable, LBGAM 
may,
in its discretion, effect transactions in portfolio securities with dealers  
who
provide the Trust with research advice or other services.
    
 
   
   Investment  decisions for  the Funds  are made  independently from  those 
for
other investment  company portfolios  advised by  LBGAM. Such  other  
investment
company  portfolios  may  invest  in  the same  securities  as  the  Funds. 
When
purchases or sales of the same security are made at substantially the same  
time
on behalf
    
 
                                       2
<PAGE>
   
of  such other  investment company portfolios,  transactions are  averaged as 
to
price, and  available investments  allocated as  to amount,  in a  manner  
which
Shearson  Lehman Advisors believes to be  equitable to each portfolio, 
including
the Funds. In some instances, this investment procedure may adversely affect 
the
price paid or received by the Funds or the size of the position obtained for 
the
Funds. To the extent permitted by law, LBGAM may aggregate the securities to  
be
sold  or purchased  for the Funds  with those to  be sold or  purchased for 
such
other investment company portfolios in order to obtain best execution.
    
 
   
   Portfolio securities will not  be purchased from or  sold to Lehman  
Brothers
Inc.  ("Lehman Brothers")  or LBGAM  or any affiliated  person (as  such term 
is
defined in the Investment Company Act of  1940, as amended (the "1940 Act"))  
of
any  of them,  except to  the extent  permitted by  the Securities  and 
Exchange
Commission (the  "SEC"). Furthermore,  with respect  to such  transactions,  
the
Funds  will not  give preference to  Service Organizations with  which the 
Funds
enter into  agreements  relating  to  Class  B  or  Class  C  shares.  (See  
the
Prospectuses, "Management of the Fund--Service Organizations.")
    
 
   As  stated in the Funds' Prospectuses, the Funds may purchase securities on 
a
"when-issued" basis (I.E., for delivery beyond  the normal settlement date at  
a
stated  price and yield). When a Fund agrees to purchase when-issued 
securities,
its custodian will set  aside cash or liquid  portfolio securities equal to  
the
amount of the commitment in a separate account. Normally, the custodian will 
set
aside  portfolio securities to satisfy a purchase commitment, and in such a 
case
such Fund  may  be required  subsequently  to  place additional  assets  in  
the
separate  account in order to ensure that the value of the account remains 
equal
to the amount of such  Fund's commitment. It may be  expected that a Fund's  
net
assets  will  fluctuate  to  a  greater  degree  when  it  sets  aside 
portfolio
securities to cover  such purchase  commitments than  when it  sets aside  
cash.
Because  the  Funds  will set  aside  cash  or liquid  assets  to  satisfy 
their
respective purchase commitments in the manner described, such a Fund's 
liquidity
and ability  to  manage  its  portfolio  might be  affected  in  the  event  
its
commitments to purchase when-issued securities ever exceeded 25% of the value 
of
its  assets.  The Funds  do not  intend to  purchase when-issued  securities 
for
speculative purposes but only in furtherance of their investment objectives. 
The
Funds reserve the right to sell the securities before the settlement date if  
it
is deemed advisable.
 
   When  a Fund engages in when-issued transactions,  it relies on the seller 
to
consummate the trade.  Failure of the  seller to do  so may result  in a  
Fund's
incurring  a loss or missing  an opportunity to obtain  a price considered to 
be
advantageous.
 
   
   The  Funds  may  seek  profits  through  short-term  trading  and  engage  
in
short-term trading for liquidity purposes. Increased trading may provide 
greater
potential  for  capital  gains  and losses,  and  also  involves 
correspondingly
greater trading  costs  which  are  borne  by  the  Fund  involved.  The  
Funds'
investment adviser will consider such costs in determining whether or not a 
Fund
should  engage in  such trading.  The portfolio turnover  rate for  the Funds 
is
expected to be zero for regulatory reporting purposes.
    
 
INVESTMENT LIMITATIONS
 
The Funds' Prospectuses summarize certain investment limitations that may not 
be
changed without  the affirmative  vote of  the  holders of  a "majority  of  
the
outstanding   shares"   of  the   respective  Fund   (as  defined   below  
under
"Miscellaneous"). Investment limitations numbered 1 through 7 may not be 
changed
without such a vote of shareholders; investment limitations 8 through 13 may  
be
changed by a vote of the Trust's Board of Trustees at any time.
 
                                       3
<PAGE>
   A Fund may not:
 
    1. Purchase  the securities of any issuer if as a result more than 5% of 
the
       value of the Fund's  assets would be invested  in the securities of  
such
   issuer,  except that  up to  25% of  the value  of the  Fund's assets  may 
be
   invested without regard to this 5%  limitation and provided that there is  
no
   limitation with respect to investments in U.S. government securities.
 
    2. Borrow  money except  from banks  for temporary  purposes and  then in 
an
       amount not exceeding  10% of  the value  of the  particular Fund's  
total
   assets,  or mortgage, pledge  or hypothecate its  assets except in 
connection
   with any such borrowing  and in amounts  not in excess of  the lesser of  
the
   dollar  amounts borrowed or 10%  of the value of  the particular Fund's 
total
   assets at the time of such borrowing. Additional investments will not be 
made
   when borrowings exceed 5% of the Fund's assets.
 
    3. Make loans except that the Fund may purchase or hold debt obligations  
in
       accordance with its investment objective and policies.
 
    4. Act  as  an underwriter,  except insofar  as  the Fund  may be  deemed 
an
       underwriter  under  applicable  securities  laws  in  selling   
portfolio
   securities.
 
    5. Purchase  or sell real estate or  real estate limited partnerships 
except
       that the  Fund  may  invest  in securities  secured  by  real  estate  
or
   interests therein.
 
    6. Purchase  or sell commodity  contracts, or invest in  oil, gas or 
mineral
       exploration or development programs or in mineral leases.
 
    7. Purchase any securities which would cause 25% or more of the value of 
its
       total assets at the time of purchase to be invested in the securities  
of
   issuers  conducting their principal business activities in the same 
industry,
   provided that there  is no  limitation with  respect to  investments in  
U.S.
   government securities.
 
    8. Knowingly  invest more  than 10%  of the  value of  the Fund's  assets 
in
       securities  that  may  be  illiquid  because  of  legal  or   
contractual
   restrictions on resale or securities for which there are no readily 
available
   market quotations.
 
    9. Purchase securities on margin, make short sales of securities or 
maintain
       a short position.
 
   10. Write or sell puts, calls, straddles, spreads or combinations thereof.
 
   11. Invest in securities if as a result the Fund would then have more than 
5%
       of  its total assets in  securities of companies (including 
predecessors)
   with less than three years of continuous operation.
 
   12. Purchase securities  of other  investment companies  except as  
permitted
       under  the  1940  Act  or in  connection  with  a  merger, 
consolidation,
   acquisition or reorganization.
 
   13. Invest in warrants.
 
                                       4
<PAGE>
ADDITIONAL PURCHASE AND REDEMPTION INFORMATION
 
IN GENERAL
 
   
Information on how to  purchase and redeem  a Fund's shares  is included in  
its
Prospectus.  The issuance of shares  is recorded on the  books of the Funds, 
and
share certificates are not issued.
    
 
   
   The regulations  of  the  Comptroller of  the  Currency  (the  
"Comptroller")
provide  that funds held in a fiduciary  capacity by a national bank approved 
by
the Comptroller to exercise fiduciary powers must be invested in accordance 
with
the instrument establishing the fiduciary relationship and local law. The  
Trust
believes  that the  purchase of  100% Government  Obligations Money  Market 
Fund
shares and 100% Treasury Instruments Money  Market Fund shares by such  
national
banks acting on behalf of their fiduciary accounts is not contrary to 
applicable
regulations  if consistent with the particular  account and proper under the 
law
governing the administration of the account.
    
 
   
   Conflict of interest restrictions  may apply to  an institution's receipt  
of
compensation  paid by the  Funds on fiduciary  funds that are  invested in 
their
Class B  or Class  C  shares. Institutions,  including  banks regulated  by  
the
Comptroller  and investment  advisers and  other money  managers subject  to 
the
jurisdiction  of  the  SEC,  the   Department  of  Labor  or  state   
securities
commissions,  should  consult their  legal  advisors before  investing 
fiduciary
funds in Class B or Class C shares.
    
 
   
   Prior to effecting a  redemption of shares  represented by certificates,  
The
Shareholder Services Group, Inc. ("TSSG"), the Trust's transfer agent, must 
have
received  such certificates at its principal  office. All such certificates 
must
be endorsed by the redeeming shareholder or accompanied by a signed stock 
power,
in each instance with the signature guaranteed by a commercial bank or a  
member
of  a major stock exchange, unless  other arrangements satisfactory to the 
Funds
have previously  been made.  The Funds  may require  any additional  
information
reasonably necessary to evidence that a redemption has been duly authorized.
    
 
   
   Under the 1940 Act, the Funds may suspend the right of redemption or 
postpone
the  date of payment  upon redemption for  any period during  which the New 
York
Stock Exchange  (the "Exchange")  is closed,  other than  customary weekend  
and
holiday  closings, or  during which trading  on said Exchange  is restricted, 
or
during which  (as determined  by the  SEC by  rule or  regulation) an  
emergency
exists as a result of which disposal or valuation of portfolio securities is 
not
reasonably  practicable, or for such  other periods as the  SEC may permit. 
(The
Funds may also  suspend or  postpone the recordation  of the  transfer of  
their
shares upon the occurrence of any of the foregoing conditions.) In addition, 
the
Funds may redeem shares involuntarily in certain other instances if the Board 
of
Trustees   determines  that  failure   to  redeem  may   have  material  
adverse
consequences to a  Fund's shareholders  in general.  Each Fund  is obligated  
to
redeem shares solely in cash up to $250,000 or 1% of the Fund's net asset 
value,
whichever  is  less,  for  any  one  shareholder  within  a  90-day  period. 
Any
redemption beyond this amount will also be in cash unless the Board of  
Trustees
determines  that  conditions exist  which  make payment  of  redemption 
proceeds
wholly in cash unwise or undesirable. In such a case, the Fund may make  
payment
wholly  or partly in readily marketable  securities or other property, valued 
in
the same way as the Fund determines net asset value. See "Net Asset Value" 
below
for an example of when such redemption or form of payment might be  
appropriate.
Redemption  in kind  is not  as liquid  as a  cash redemption.  Shareholders 
who
receive a  redemption in  kind may  incur transaction  costs if  they sell  
such
securities  or property, and may receive less  than the redemption value of 
such
securities or property upon  sale, particularly where  such securities are  
sold
prior to maturity.
    
 
                                       5
<PAGE>
   
   Any  institution purchasing  shares on  behalf of  separate accounts  will 
be
required to  hold the  shares in  a single  nominee name  (a "Master  
Account").
Institutions  investing in more than one of the Trust's portfolios or classes 
or
sub-classes of shares, must maintain a  separate Master Account for each  
Fund's
class  or sub-class of shares. Sub-accounts may be established by name or 
number
either when the Master Account is opened or later.
    
 
NET ASSET VALUE
 
As stated in  each Fund's  Prospectus, a  Fund's net  asset value  per share  
is
calculated  by adding, the value of all  of that Fund's portfolio securities 
and
other assets belonging to that Fund, subtracting the liabilities charged to 
that
Fund and  dividing  the  result  by  the total  number  of  that  Fund's  
shares
outstanding (irrespective of class). "Assets belonging to" a Fund consist of 
the
consideration  received upon  the issuance of  shares together  with all 
income,
earnings, profits and  proceeds derived from  the investment thereof,  
including
any  proceeds from  the sale, exchange  or liquidation of  such investments, 
any
funds or payments derived from any reinvestment of such proceeds, and a  
portion
of  any general  assets of  the Trust not  belonging to  a particular 
portfolio.
Assets belonging to a particular Fund are charged with the direct liabilities 
of
that Fund and with a share of the general liabilities of the Trust allocated  
in
proportion  to  the relative  net  assets of  such  Fund and  the  Trust's 
other
portfolios. Determinations made in good  faith and in accordance with  
generally
accepted accounting principles by the Board of Trustees as to the allocations 
of
any assets or liabilities with respect to a Fund are conclusive.
 
   As  stated in the  Funds' Prospectuses, in  computing the net  asset value 
of
shares of the Funds  for purposes of  sales and redemptions,  the Funds use  
the
amortized  cost method of valuation. Under this  method, the Funds value each 
of
their portfolio securities at cost on the date of purchase and thereafter 
assume
a constant proportionate amortization of any discount or premium until  
maturity
of  the security. As a result, the value of a portfolio security for purposes 
of
determining net asset value normally does not change in response to  
fluctuating
interest  rates. While the amortized cost method provides certainty in 
portfolio
valuation, it  may result  in valuations  for the  Funds' securities  which  
are
higher or lower than the market value of such securities.
 
   In  connection with their use of amortized  cost valuation, each of the 
Funds
limits the dollar-weighted average maturity of its portfolio to not more than 
90
days.  100%  Government  Obligations  Money   Market  Fund  and  100%   
Treasury
Instruments  Money Market Fund  do not purchase any  instrument with a 
remaining
maturity of more than thirteen months  and one year, respectively (with  
certain
exceptions).  In  determining the  average weighted  portfolio maturity  of 
each
Fund, a  variable rate  obligation that  is  issued or  guaranteed by  the  
U.S.
Government,  or  an  agency or  instrumentality  thereof,  is deemed  to  have 
a
maturity equal to the period remaining until the obligation's next interest 
rate
adjustment. The  Trust's  Board of  Trustees  has also  established  
procedures,
pursuant to rules promulgated by the SEC, that are intended to stabilize the 
net
asset  value per  share of each  Fund for  purposes of sales  and redemptions 
at
$1.00. Such procedures include the determination at such intervals, as the 
Board
deems appropriate, of the extent, if any,  to which each Fund's net asset  
value
per  share calculated by  using available market  quotations deviates from 
$1.00
per share. In the event such deviation exceeds 1/2 of 1% with respect to a 
Fund,
the Board will promptly  consider what action, if  any, should be initiated.  
If
the  Board believes that  the amount of  any deviation from  the $1.00 
amortized
cost price per share of a Fund  may result in material dilution or other  
unfair
results  to investors or  existing shareholders, it  will take such  steps as 
it
considers  appropriate  to  eliminate  or   reduce  to  the  extent   
reasonably
practicable   any   such   dilution   or  unfair   results.   These   steps  
may
 
                                       6
<PAGE>
include selling portfolio instruments prior  to maturity; shortening the  
Fund's
average  portfolio maturity; withholding or reducing dividends; redeeming 
shares
in kind; or utilizing a net asset value per share determined by using  
available
market quotations.
 
MANAGEMENT OF THE FUNDS
 
TRUSTEES AND OFFICERS
 
The   Trust's  trustees  and  executive  officers,  their  addresses,  
principal
occupations during the past five years and other affiliations are as follows:
 
   
<TABLE>
<CAPTION>
                                                                             
PRINCIPAL OCCUPATIONS DURING PAST 5
NAME AND ADDRESS                                POSITION WITH THE TRUST          
YEARS AND OTHER AFFILIATIONS
---------------------------------------------  --------------------------  ---
-------------------------------------
<S>                                            <C>                         <C>
Steven Spiegel(1)(2)                           Vice Chairman of the Board  
Managing Director, Lehman Brothers;
 3 World Financial Center                      and Trustee                 
President, Lehman Brothers Global Asset
 New York, NY 10285                                                        
Management Inc.; formerly Chairman,
                                                                           
Lehman Brothers International (Europe)
Charles F. Barber(2)(3)                        Trustee                     
Consultant; formerly Chairman of the
 66 Glenwood Drive                                                         
Board, ASARCO Incorporated
 Greenwich, CT 06830
Burt N. Dorsett(2)(3)                          Trustee                     
Managing Partner, Dorsett McCabe Capital
 201 East 62nd Street                                                      
Management, Inc., an investment
 New York, NY 10022                                                        
counselling firm; Director, Research
                                                                           
Corporation Technologies, a non-profit
                                                                           
patent-clearing and licensing operation;
                                                                           
formerly President, Westinghouse Pension
                                                                           
Investments Corporation; formerly
                                                                           
Executive Vice President and Trustee,
                                                                           
College Retirement Equities Fund, Inc.,
                                                                           a 
variable annuity fund; and formerly
                                                                           
Investment Officer, University of
                                                                           
Rochester
Edward J. Kaier(2)(3)                          Trustee                     
Partner with the law firm of Hepburn
 1100 One Penn Center                                                      
Willcox Hamilton & Putnam
 Philadelphia, PA 19103
S. Donald Wiley(2)(3)                          Trustee                     
Vice-Chairman and Trustee, H.J. Heinz
 USX Tower                                                                 
Company Foundation; prior to October
 Pittsburgh, PA 15219                                                      
1990, Senior Vice President, General
                                                                           
Counsel and Secretary, H.J. Heinz
                                                                           
Company
</TABLE>
    
 
                                       7
<PAGE>
   
<TABLE>
<CAPTION>
                                                                             
PRINCIPAL OCCUPATIONS DURING PAST 5
NAME AND ADDRESS                                POSITION WITH THE TRUST          
YEARS AND OTHER AFFILIATIONS
---------------------------------------------  --------------------------  ---
-------------------------------------
<S>                                            <C>                         <C>
Peter Meenan                                   President                   
Managing Director of Lehman Brothers;
 260 Franklin Street                                                       
President of Lehman Brothers
 Boston, MA 02110                                                          
Institutional Funds Group Trust;
                                                                           
formerly, Director, Senior Vice
                                                                           
President and Director of Institutional
                                                                           
Fund Services, The Boston Company
                                                                           
Advisors, Inc. from February 1984 to May
                                                                           
1993; Director, Funds Distributor, Inc.
                                                                           
(1992-1993); Senior Vice President, The
                                                                           
Boston Company Advisors, Inc. from
                                                                           
August 1984 to May 1993
John M. Winters                                Vice President and          
Senior Vice President and Senior Money
 World Financial Center                        Investment Officer          
Market Portfolio Manager, Lehman
 New York, NY 10285                                                        
Brothers, Global Asset Management Inc.;
                                                                           
formerly Product Manager with Lehman
                                                                           
Brothers Capital Markets Group
Michael L. Karbok                              Treasurer                   
Vice President, The Shareholder Services
 One Exchange Place                                                        
Group, Inc.; prior to May 1994, Vice
 Boston, MA 02109                                                          
President, The Boston Company Advisors,
                                                                           
Inc.
Patricia L. Bilkinger                          Secretary                   
Vice President and Associate General
 One Exchange Place                                                        
Counsel, The Shareholder Services Group,
 Boston, MA 02109                                                          
Inc.; prior to May 1994, Vice President
                                                                           and 
Associate General Counsel, The
                                                                           
Boston Company Advisors, Inc.
<FN>
----------
1. Considered by the Trust to be "interested persons" of the Trust as defined 
in
the 1940 Act.
2. Audit Committee Member.
3. Nominating Committee Member.
</TABLE>
    
 
   
   One trustee of the Trust, Mr. Dorsett, serves as trustee or director of 
other
investment companies for which  Lehman Brothers and  LBGAM serve as  
distributor
and investment adviser.
    
 
   
   No  employee of Lehman Brothers, LBGAM or TSSG receives any compensation 
from
the Trust for acting as an officer or trustee of the Trust. The Trust pays  
each
trustee  who is not a director, officer or employee of Shearson Lehman 
Brothers,
LBGAM or TSSG or any of their affiliates, a fee of $20,000 per annum plus 
$1,250
per meeting attended and reimburses them for travel and out-of-pocket 
expenses.
    
 
                                       8
<PAGE>
   
   For the fiscal period ended January 31, 1994, such fees and expenses 
totalled
$9,589 for each  Fund, $94,754 for  the Trust in  the aggregate. As  of May  
13,
1994, Trustees and officers of the Trust as a group beneficially owned less 
than
1% of the outstanding shares of the Fund.
    
 
   
   By virtue of the responsibilities assumed by Lehman Brothers, LBGAM, TSSG 
and
their  affiliates under  their respective agreements  with the  Trust, the 
Trust
itself requires no employees in addition to its officers.
    
 
   
INVESTMENT ADVISER
    
   
LBGAM serves as  the investment  adviser to each  of the  Funds. The  
investment
advisory  agreements provide that LBGAM is responsible for investment 
activities
of the Funds, including executing portfolio strategy, all Fund purchase and 
sale
transactions and employs professional  portfolio managers and security  
analysts
who provide research for the Funds.
    
 
   
   The  Investment Advisory  Agreements with respect  to each of  the Funds 
will
continue in  effect  for  a period  of  two  years from  February  5,  1993  
and
thereafter  from year to year provided  the continuance is approved annually 
(i)
by the Trust's Board of Trustees or (ii)  by a vote of a "majority" (as  
defined
in  the 1940  Act) of  a Fund's  outstanding voting  securities, except  that 
in
either event the continuance is also approved  by a majority of the Trustees  
of
the  Trust who are not  "interested persons" (as defined  in the 1940 Act). 
Each
Investment Advisory Agreement may be terminated  (i) on 60 days' written  
notice
by  the Trustees of the Trust, (ii) by vote of holders of a majority of a 
Fund's
outstanding voting  securities,  or  upon  90 days'  written  notice  by  
Lehman
Brothers,  or (iii) automatically in the event  of its assignment (as defined 
in
the 1940 Act).
    
 
   
   As compensation for LBGAM's services rendered to the Funds, each Fund pays  
a
fee,  computed daily and paid monthly, at the annual rate of .30% of the 
average
daily net assets of the Fund. For  the period February 8, 1993 (commencement  
of
operations)  to  January  31, 1994.  LBGAM  received  net advisory  fees  in 
the
following amounts: the  100% Government Obligations  Money Market Fund,  
$27,323
and  the 100% Treasury Instruments Money  Market Fund, $70,084. Waivers by 
LBGAM
of advisory fees and reimbursement of expenses to which it was entitled 
amounted
to: the 100%  Government Obligations  Money Market Fund,  $27,323 and  
$130,650,
respectively,  and the 100%  Treasury Instruments Money  Market Fund $70,084 
and
$128,972, respectively. In order to  maintain competitive expense ratios  
during
1994  through  1997, the  investment adviser  and  administrator have  agreed 
to
reimburse the  Funds if  total  operating expenses  exceed certain  levels.  
See
"Background and Expense Information" in each Fund's Prospectus.
    
 
   
PRINCIPAL HOLDERS
    
   
At May 13, 1994, the principal holders of each Fund were as follows:
    
 
   
<TABLE>
<CAPTION>
                                                                           
PERCENTAGE OF
                                                                          
SHARES HELD OF
100% GOVERNMENT OBLIGATIONS MONEY MARKET FUND       NAME AND ADDRESS        
RECORD ONLY
------------------------------------------------------------------------------
-----------
<S>                                           <C>                         <C>
Class A Shares                                Lehman Brothers Inc.             
64.73%
                                              Three World Financial Ctr.
                                              New York, NY 10285
                                              Norwest Bank of Minnesota NA      
34.56%
                                              733 Marquette South
                                              Minneapolis, MN 55479
</TABLE>
    
 
                                       9
<PAGE>
   
<TABLE>
<CAPTION>
                                                                           
PERCENTAGE OF
                                                                          
SHARES HELD OF
GOVERNMENT OBLIGATIONS MONEY MARKET FUND            NAME AND ADDRESS        
RECORD ONLY
------------------------------------------------------------------------------
-----------
<S>                                           <C>                         <C>
100% TREASURY INSTRUMENTS MONEY MARKET FUND
Class A Shares                                Westco                           
56.59%
                                              P.O. Box 380
                                              Schenectady, NY 12301
                                              Firstrust Co., The National      
17.53%
                                              City Bank of Evansville
                                              P.O. Box 868
                                              Evansville, IN 47705
                                              Commerce Company                  
7.20%
                                              P.O. Box 17089
                                              Fortworth, TX 76102
                                              Onbank and Trust Co.              
6.88%
                                              P.O. Box 4983
                                              Syracuse, NY 13221
                                              Troy Savings Bank                 
5.75%
                                              P.O. Box 58
                                              Troy, NY 12181
                                              Lehman Brothers Inc.              
5.30%
                                              World Financial Center
                                              New York, NY 10285
</TABLE>
    
 
   
   As  of May 13, 1994, the Class B and Class C shares of the Funds had not 
been
offered to the public and all outstanding shares were held by Lehman Brothers.
    
 
   
   The shareholders described  above have  indicated that they  each hold  
their
shares on behalf of various accounts and not as beneficial owners. To the 
extent
that any shareholder is the beneficial owner of more than 25% of the 
outstanding
shares  of a Fund,  such shareholder may be  deemed to be  a "control person" 
of
that Fund for purposes of the 1940 Act.
    
 
   
ADMINISTRATOR AND TRANSFER AGENT
    
   
TSSG, a subsidiary of First Data Corporation, is located at One Exchange  
Place,
Boston,  Massachusetts  02109,  and  serves  as  the  Trust's  administrator 
and
transfer agent. As  the Funds'  administrator, TSSG  has agreed  to provide  
the
following  services: (i) assist generally  in supervising the Funds' 
operations,
providing and supervising the operation  of an automated data processing  
system
to  process purchase and redemption orders, providing information concerning 
the
Funds  to  their   shareholders  of  record,   handling  shareholder   
problems,
supervising  the  services  of  employees  whose  principal  responsibility  
and
function is to preserve and strengthen shareholder relations and monitoring  
the
arrangements  pertaining to  the Funds'  agreements with  Service 
Organizations;
(ii) prepare reports  to the  Funds' shareholders  and prepare  tax returns  
and
reports  to and  filings with  the SEC; (iii)  compute the  respective net 
asset
value per share of each Fund; (iv)  provide the services of certain persons  
who
may be elected as trustees or appointed as officers of the Trust by the Board 
of
Trustees;  and  (v) maintain  the registration  or  qualification of  the 
Funds'
shares for sale
    
 
                                       10
<PAGE>
   
under state securities  laws. TSSG  receives, as compensation  for its  
services
rendered  under  an administration  agreement,  an administrative  fee, 
computed
daily and paid  monthly, at the  annual rate of  .10% of the  average daily  
net
assets  of each Fund. TSSG pays Boston  Safe, the Fund's custodian, a portion 
of
its monthly administration fee for custody services rendered to the Funds.
    
 
   
   Prior to  May  6,  1994,  The  Boston  Company  Advisors  Inc.  ("TBCA"),  
an
wholly-owned  subsidiary  of  Mellon  Bank  Corporation  ("Mellon"),  served  
as
administrator of the  Funds. On May  6, 1994, TSSG  acquired TBCA's third  
party
mutual  fund administration business from Mellon, and each Fund's 
administration
agreement with  TBCA was  assigned to  TSSG.  For the  period February  8,  
1993
(commencement   of  operations)   to  January   31,  1994,   TBCA  received  
net
administration fees in the following amounts: 100% Government Obligations  
Money
Market  Fund,  $27,323  and the  100%  Treasury Instruments  Money  Market 
Fund,
$70,084. Waivers by TBCA of administration fees and reimbursement of expenses 
to
which it was  entitled amounted  to the following:  100% Government  
Obligations
Money   Market  Fund,  $27,323  and  $9,381,  respectively,  and  100%  
Treasury
Instruments Money Market Fund,  $70,084 and $21,978,  respectively. In order  
to
maintain competitive expense ratios during 1994 and 1997, the investment 
adviser
and administrator have agreed to reimburse the Funds if total operating 
expenses
exceed  certain levels. See "Background and  Expense Information" in each 
Fund's
Prospectus.
    
 
   
   Under the transfer agency agreement,  TSSG maintains the shareholder  
account
records  for the Trust, handles  certain communications between shareholders 
and
the Trust and distributes dividends and  distributions payable by the Trust  
and
produces  statements  with respect  to account  activity for  the Trust  and 
its
shareholders. For these services, TSSG receives  a monthly fee based on  
average
annual assets and is reimbursed for out-of-pocket expenses.
    
 
   
DISTRIBUTOR
    
   
Lehman Brothers acts as distributor of the Funds' shares. Each Fund's shares 
are
sold on a continuous basis by Lehman Brothers as agent. The distributor pays 
the
cost   of  printing  and  distributing  prospectuses  to  persons  who  are  
not
shareholders of the Funds (excluding preparation and printing expenses 
necessary
for the continued registration  of Fund shares) and  of preparing, printing  
and
distributing  all sales literature.  No compensation is payable  by the Funds 
to
Lehman Brothers for its distribution services.
    
 
   Lehman Brothers  is  comprised of  several  major operating  business  
units.
Lehman  Brothers Institutional Funds  Group is the  business group within 
Lehman
Brothers that is primarily responsible  for the distribution and client  
service
requirements  of the Trust  and its shareholders.  Lehman Brothers 
Institutional
Funds Group has been serving institutional clients' investment needs 
exclusively
for more  than 20  years,  emphasizing high  quality individualized  service  
to
clients.
 
   
CUSTODIAN
    
 
   
Boston Safe Deposit and Trust Company ("Boston Safe"), a wholly owned 
subsidiary
of   The  Boston  Company,  Inc.,  is  located  at  One  Boston  Place,  
Boston,
Massachusetts 02108, and  serves as  the custodian of  the Trust  pursuant to  
a
custody  agreement. Under the  custody agreement, Boston  Safe holds each 
Fund's
portfolio securities  and keeps  all  necessary accounts  and records.  For  
its
services,  Boston Safe  receives a monthly  fee based upon  the month-end 
market
value of securities  held in  custody and also  receives securities  
transaction
charges,  including out-of-pocket  expenses. The  assets of  the Trust  are 
held
under bank custodianship in compliance with the 1940 Act.
    
 
                                       11
<PAGE>
SERVICE ORGANIZATIONS
 
   
As stated in  the Funds' Prospectuses,  the Funds will  enter into an  
agreement
with  each financial  institution which may  purchase Class C  shares. The 
Funds
will enter  into an  agreement with  each Service  Organization whose  
customers
("Customers")  are the  beneficial owners  of Class  C shares  that requires 
the
Service Organization to provide certain  services to Customers in  
consideration
of  the Funds' payment of .35% of the average daily net asset value of the 
Class
C shares held  by the Service  Organization for the  benefit of Customers.  
Such
services  include:  (i)  aggregating  and  processing  purchase  and  
redemption
requests from Customers and  placing net purchase and  redemption orders with  
a
Fund's  distributor; (ii) processing dividend payments  from the Funds on 
behalf
of Customers;  (iii) providing  information  periodically to  Customers  
showing
their  positions in  shares; (iv)  arranging for  bank wires;  (v) responding 
to
Customer  inquiries  relating   to  the  services   performed  by  the   
Service
Organization   and   handling   correspondence;   (vi)   forwarding  
shareholder
communications from the Funds (such as proxies, shareholder reports, annual  
and
semi-annual  financial statements and dividend, distribution and tax notices) 
to
Customers; (vii) acting as  shareholder of record or  nominee; and (viii)  
other
similar  account administrative services. In addition, a Service Organization 
at
its option, may also provide  to its Customers of Class  C shares (a) a  
service
that  invests the  assets of  their accounts in  shares pursuant  to specific 
or
pre-authorized instructions; (b) provide  sub-accounting with respect to  
shares
beneficially owned by Customers or the information necessary for sub-
accounting;
and (c) provide checkwriting services. Service Organizations that purchase 
Class
C  shares will  also provide  assistance in connection  with the  support of 
the
distribution of Class C shares to its Customers, including marketing  
assistance
and  the forwarding to Customers of sales literature and advertising provided 
by
a distributor of the shares.
    
 
   
   Holders of Class B shares  of a Fund will receive  the services set forth  
in
(i)  and (v)  and may receive  one or  more of the  services set  forth in 
(ii),
(iii), (iv),  (vi) and  (viii) above.  In consideration  of the  services to  
be
rendered  in  connection with  this  Class of  shares  pursuant to  an 
agreement
between the Fund  and the Service  Organization, the Fund  will pay the  
Service
Organization  .25% (on an annualized basis) of the average daily net asset 
value
of the Class B shares held by the Service Organization. A Service  
Organization,
at  its option,  may also provide  to its  Customers of Class  B shares 
services
including: (a) acting  as shareholder of  record and as  nominee; (b)  
providing
Customers  with a service  that invests the  assets of their  accounts in 
shares
pursuant to specific or  pre-authorized instruction; (c) provide  sub-
accounting
with  respect  to  shares beneficially  owned  by Customers  or  the 
information
necessary  for  sub-accounting;  (d)   providing  information  periodically   
to
Customers  showing their position  in shares; (e) arranging  for bank wires; 
(f)
forwarding  shareholder  communications   from  the  Fund   (such  as   
proxies,
shareholder  reports, annual and semi-annual  financial statements and 
dividend,
distribution, and tax notices) to Customers; (g) providing reasonable 
assistance
in connection with the  distribution of shares to  Customers; and (h)  
providing
such  other similar services  as the Fund  may reasonably request  to the 
extent
Service Organization is permitted to do so under applicable statutes, rules,  
or
regulations.
    
 
   Each   Fund's  agreements  with  Service  Organizations  are  governed  by  
a
Shareholder Services Plan  (the "Plan")  that has  been adopted  by the  
Trust's
Board  of Trustees pursuant to an exemptive order granted by the SEC. Under 
this
Plan, the Board of Trustees reviews, at least quarterly, a written report of 
the
amounts expended under the Fund's agreements with Service Organizations and  
the
purposes  for  which  the  expenditures  were  made.  In  addition,  the  
Funds'
arrangements with Service Organizations must be approved
 
                                       12
<PAGE>
annually by a  majority of  the Trust's trustees,  including a  majority of  
the
trustees  who are not "interested  persons" of the Trust  as defined in the 
1940
Act and have no direct or indirect financial interest in such arrangements  
(the
"Disinterested Trustees").
 
   The  Board  of Trustees  has approved  the  Funds' arrangements  with 
Service
Organizations based on  information provided by  the Funds' service  
contractors
that  there is  a reasonable likelihood  that the arrangements  will benefit 
the
Funds and  their shareholders  by  affording the  Funds greater  flexibility  
in
connection  with the servicing of the accounts of the beneficial owners of 
their
shares in an efficient manner. Any material amendment to the Funds' 
arrangements
with Service Organizations must be approved  by a majority of the Trust's  
Board
of Trustees (including a majority of the Disinterested Trustees). So long as 
the
Funds'  arrangements with Service Organizations are in effect, the selection 
and
nomination of  the  members  of  the  Trust's Board  of  Trustees  who  are  
not
"interested persons" (as defined in the 1940 Act) of the Trust will be 
committed
to the discretion of such non-interested trustees.
 
   
   For  the period February 8, 1993  (commencement of operations) to January 
31,
1994, the 100% Government Obligations Money Market Fund did not pay any  
service
fees  and the Class B shares of  the 100% Treasury Instruments Money Market 
Fund
paid $923 in service fees.
    
 
EXPENSES
 
   
The Funds' expenses include  taxes, interest, fees and  salaries of the  
Trust's
trustees  and  officers who  are  not directors,  officers  or employees  of 
the
Trust's service  contractors, SEC  fees,  state securities  qualification  
fees,
costs  of preparing  and printing prospectuses  for regulatory  purposes and 
for
distribution to shareholders,  advisory, sub-advisory  and administration  
fees,
charges  of the custodian, transfer agent and dividend disbursing agent, 
Service
Organization fees,  certain  insurance  premiums,  outside  auditing  and  
legal
expenses,  costs  of  shareholder  reports  and  shareholder  meetings  and  
any
extraordinary expenses. The Funds  also pay for  brokerage fees and  
commissions
(if any) in connection with the purchase and sale of portfolio securities. 
LBGAM
and  TSSG have agreed that if, in any  fiscal year, the expenses borne by a 
Fund
exceed the applicable expense limitations imposed by the securities  
regulations
of  any state in which shares of the particular Fund are registered or 
qualified
for sale to the public, it will reimburse such Fund for any excess to the 
extent
required by such  regulations in  the same proportion  that each  of their  
fees
bears  to the Fund's aggregate fees for investment advice, sub-investment 
advice
and  administrative   services.  Unless   otherwise   required  by   law,   
such
reimbursement  would be accrued and paid on the same basis that the advisory 
and
administration fees are accrued and paid by such Fund. To the Funds'  
knowledge,
of the expense limitations in effect on the date of this Statement of 
Additional
Information,  none is more restrictive than two and one-half percent (2 1/2%) 
of
the first $30 million of a Fund's average annual net assets, two percent (2%) 
of
the next $70  million of  the average  annual net  assets and  one and  one-
half
percent (1 1/2%) of the remaining average annual net assets.
    
 
ADDITIONAL INFORMATION CONCERNING TAXES
 
The   following  summarizes  certain  additional  tax  considerations  
generally
affecting each Fund and its shareholders  that are not described in each  
Fund's
Prospectus.  No attempt  is made  to present a  detailed explanation  of the 
tax
treatment of the Funds  or their shareholders  or possible legislative  
changes,
and  the discussion  here and  in each  Fund's Prospectus  is not  intended as 
a
substitute for careful tax planning. Investors should consult their tax 
advisors
with specific reference to their own tax situation.
 
                                       13
<PAGE>
   
   Each Fund  is treated  as a  separate  corporate entity  under the  Code  
and
qualified  as a regulated  investment company under  the Code and  intends to 
so
qualify in future years. In  order to so qualify for  a taxable year, each  
Fund
must satisfy the distribution requirement described in its Prospectus, derive 
at
least  90% of  its gross  income for the  year from  certain qualifying 
sources,
comply with certain diversification tests and derive less than 30% of its  
gross
income  from  the sale  or  other disposition  of  securities and  certain 
other
investments held for less than three months. Interest (including original  
issue
discount  and  accrued market  discount)  received by  a  Fund upon  maturity 
or
disposition of a security held for less than three months will not be treated 
as
gross income  derived from  the sale  or other  disposition of  such  
securities
within  the  meaning of  this requirement.  However, any  other income  which 
is
attributable to realized  market appreciation  will be treated  as gross  
income
from the sale or other disposition of securities for this purpose.
    
 
   A  4% nondeductible excise  tax is imposed  on regulated investment 
companies
that fail to distribute  currently an amount equal  to specified percentages  
of
their  ordinary taxable  income and capital  gain net income  (excess of 
capital
gains over capital losses). Each  Fund intends to make sufficient  
distributions
or  deemed distributions of its ordinary taxable income and any capital gain 
net
income each calendar year to avoid liability for this excise tax.
 
   If for  any taxable  year a  Fund does  not qualify  for tax  treatment as  
a
regulated  investment  company, all  of its  taxable income  will be  subject 
to
federal income  tax  at  regular  corporate  rates  without  any  deduction  
for
distributions  to Fund shareholders. In such event, dividend distributions 
would
be taxable as ordinary income  to the Fund's shareholders  to the extent of  
its
current  and accumulated  earnings and  profits, and  would be  eligible for 
the
dividends received deduction in the case of corporate shareholders.
 
   Each Fund will be required in certain cases to withhold and remit to the 
U.S.
Treasury 31% of taxable  dividends or 31% of  gross proceeds realized upon  
sale
paid  to any shareholder who has failed  to provide a correct tax 
identification
number in the manner required, or who is subject to withholding by the  
Internal
Revenue  Service  for failure  to  properly include  on  his return  payments 
of
taxable interest or dividends, or who has failed to certify to the Fund that  
he
is  not subject to  backup withholding when required  to do so or  that he is 
an
"exempt recipient."
 
   Depending upon the extent of the  Funds' activities in states and  
localities
in  which their  offices are  maintained, in  which their  agents or 
independent
contractors are located or in which  they are otherwise deemed to be  
conducting
business, the Funds may be subject to the tax laws of such states or 
localities.
In  addition, in  those states  and localities which  have income  tax laws, 
the
treatment of the Funds  and their shareholders under  such laws may differ  
from
their  treatment  under federal  income tax  laws.  Shareholders are  advised 
to
consult their tax advisors concerning the application of state and local 
taxes.
 
   The foregoing discussion is based on  federal tax laws and regulations  
which
are in effect on the date of this Statement of Additional Information; such 
laws
and regulations may be changed by legislative or administrative action.
 
DIVIDENDS
 
Net  income of each of the Funds  for dividend purposes consists of (i) 
interest
accrued and original issue discount earned  on the Fund's assets, (ii) plus  
the
amortization  of market discount and minus the amortization of market premium 
on
such assets, (iii) less accrued expenses  directly attributable to the Fund  
and
the
 
                                       14
<PAGE>
general  expenses  (E.G., legal,  accounting and  trustees'  fees) of  the 
Trust
prorated to the Fund on the basis of its relative net assets. In addition, 
Class
B or  Class C  shares  bear exclusively  the expense  of  fees paid  to  
Service
Organizations  with respect to the relevant  Class of shares. See "Management 
of
the Funds--Service Organizations."
 
   As stated, the Trust uses  its best efforts to  maintain the net asset  
value
per  share  of each  Fund at  $1.00. As  a  result of  a significant  expense 
or
realized or unrealized loss  incurred by either of  these Funds, it is  
possible
that a Fund's net asset value per share may fall below $1.00.
 
ADDITIONAL YIELD INFORMATION
 
The  "yields,"  "effective yields"  and  "tax-equivalent yields"  are 
calculated
separately for each  class of shares  of each  Fund and in  accordance with  
the
formulas  prescribed by the SEC. The seven-day yield for each class of shares 
is
calculated by  determining  the  net  change in  the  value  of  a  
hypothetical
pre-existing  account in the particular Fund which has a balance of one share 
of
the Class involved at the  beginning of the period,  dividing the net change  
by
the  value of  the account  at the beginning  of the  period to  obtain the 
base
period return, and multiplying the base  period return by 365/7. The net  
change
in  the value of  an account in a  Fund includes the  value of additional 
shares
purchased with dividends from the original  share and dividends declared on  
the
original  share and any such  additional shares, net of  all fees charged to 
all
shareholder accounts in  proportion to  the length of  the base  period and  
the
Fund's average account size, but does not include gains and losses or 
unrealized
appreciation  and  depreciation.  In  addition,  an  effective  annualized 
yield
quotation may be computed on  a compounded basis with  respect to each Class  
of
its  shares  by  adding 1  to  the base  period  return for  the  Class 
involved
(calculated as described above), raising that sum to a power equal to 365/7, 
and
subtracting 1 from the result. A tax-equivalent yield for each Class of a 
Fund's
shares is computed by  dividing the portion of  the yield (calculated as  
above)
that  is exempt from federal income tax by one minus a stated federal income 
tax
rate and adding that figure  to that portion, if any,  of the yield that is  
not
exempt from federal income tax.
 
   
   For  the 7-day period ended January 31, 1994  the yield for Class A shares 
of
the 100% Government Obligations Money Market  Fund, was 3.07% and the  
effective
yield was 3.11%. The tax equivalent yield for this period for the Class A 
shares
of  the  100% Government  Obligations  Money Market  Fund  was 4.51%  assuming 
a
federal tax rate of 31%. For  the same period, the yields  for Class A, B and  
C
shares  of the 100%  Treasury Instruments Money Market  Fund, were: 3.05%, 
2.80%
and 2.70%, respectively and  the effective yields were  3.09%, 2.84% and  
2.73%,
respectively. The tax equivalent yields for this period for the Class A, B and 
C
shares  of the 100% Treasury Instruments Money Market Fund were 4.48%, 4.12% 
and
3.96%, respectively,  assuming a  federal  tax rate  of  31%. Without  such  
fee
waivers  or  expense reimbursements  the 7-day  yield,  effective yield  and 
tax
equivalent yield for the Class A shares of the 100% Government Obligations 
Money
Market Fund would have  been 2.94%, 2.98% and  4.32%, respectively. The  
yields,
effective  yields and tax equivalent  yields for Class A, B  and C shares of 
the
100% Treasury Instruments  Money Market Fund  would have been  2.92%, 2.67%  
and
2.57%, 2.96%, 2.70% and 2.60%, and 4.29%, 3.91% and 3.77%, respectively.
    
 
   
   For  the 30-day period ended  January 31, 1994 the  yield and effective 
yield
for Class A shares  of the 100% Government  Obligations Money Market Fund,  
were
3.10%  and ____%, respectively. The tax equivalent yield for this period for 
the
Class   A   shares   of   the   100%   Government   Obligations   Money   
Market
    
 
                                       15
<PAGE>
   
Fund  was 4.49%  assuming a federal  tax rate of  31%. For the  same period, 
the
yields for Class A, B and C shares of the 100% Treasury Instruments Money 
Market
Fund, were 3.06%, 2.81% and 2.71%,  respectively, and the effective yields  
were
____%,  ____% and ____%, respectively. The tax equivalent yields for this 
period
for the Class A, B  and C shares of the  100% Treasury Instruments Money  
Market
Fund  were 4.43%, 4.07% and 3.93%, respectively,  assuming a federal tax rate 
of
31%. Without  such fee  waivers  for expense  reimbursements the  30-day  
yield,
effective  yield and  tax equivalent yield  for the  Class a shares  of the 
100%
Government Obligations Money Market Fund would have been 2.97%, ____% and 
4.30%,
respectively. The yields, effective yields  and tax equivalent yields for  
Class
A,  B and C shares of the 100% Treasury Instruments Money Market Fund would 
have
been 2.93%, 2.68% and 2.58%, ____%, ____% and ____%, and 4.25%, 3.88% and 
3.74%,
respectively.
    
 
   
   Class B  and  Class C  Shares  bear the  expenses  of fees  paid  to  
Service
Organizations.  As a  result, at any  given time, the  net yield of  Class B 
and
Class C Shares could be up to .25% and .35% lower than the net yield of Class  
A
Shares,  respectively. The  Class B  and Class C  shares of  the 100% 
Government
Obligations Money Market Fund did not have activity as of January 31, 1994  
and,
accordingly,  yield information is not available with respect to such classes 
of
shares.
    
 
   Similarly, based on the calculations  described above, the Funds' 30-day  
(or
one-month)  yields,  effective  yields  and tax-equivalent  yields  may  also 
be
calculated. Such  yields refer  to the  average daily  income generated  over  
a
30-day (or one-month) period, as appropriate.
 
   From  time  to time,  in advertisements  or in  reports to  shareholders, 
the
performance of the  Funds may  be quoted  and compared  to that  of other  
money
market  funds or  accounts with  similar investment  objectives and  to stock 
or
other relevant indices. For example, the yields of the Funds may be compared  
to
the   Donoghue's  MONEY   FUND  AVERAGE,  which   is  an   average  compiled  
by
IBC/Donoghue's MONEY FUND REPORT-R- of Holliston, MA 01746, a widely  
recognized
independent  publication that monitors the performance of money market funds, 
or
to the  average yields  reported by  the  BANK RATE  MONITOR from  money  
market
deposit  accounts offered by the 50 leading banks and thrift institutions in 
the
top five standard metropolitan statistical areas.
 
   The Funds' yields  will fluctuate and  any quotation of  yield should not  
be
considered  as  representative of  the future  performance  of the  Funds. 
Since
yields fluctuate, yield data cannot necessarily be used to compare an 
investment
in the Funds' shares with bank deposits, savings accounts and similar 
investment
alternatives which  often provide  an agreed  or guaranteed  fixed yield  for  
a
stated  period of time. Shareholders should  remember that performance and 
yield
are generally functions of  the kind and  quality of the  investments held in  
a
portfolio,  portfolio maturity,  operating expenses  net of  waivers and 
expense
reimbursements, and market conditions. Any fees charged by Service 
Organizations
or other institutional investors with respect to customer accounts in  
investing
in shares of the Funds will not be included in yield calculations; such fees, 
if
charged, would reduce the actual yield from that quoted.
 
ADDITIONAL DESCRIPTION CONCERNING FUND SHARES
 
The  Trust does  not presently  intend to  hold annual  meetings of 
shareholders
except as  required by  the 1940  Act or  other applicable  law. The  law  
under
certain circumstances provides shareholders with the right to call for a 
meeting
of  shareholders to consider the removal of  one or more trustees. To the 
extent
required by law,  the Trust  will assist  in shareholder  communication in  
such
matters.
 
                                       16
<PAGE>
   As  stated in the Prospectuses for the Funds, holders of the shares of a 
Fund
will vote  in the  aggregate  and not  by class  on  all matters,  except  
where
otherwise  required by  law and except  that only a  Fund's Class B  and Class 
C
shares, as the case may be, will be  entitled to vote on matters submitted to  
a
vote  of  shareholders  pertaining  to  the  Fund's  arrangements  with  
Service
Organizations with respect to the relevant Class of shares. (See "Management  
of
the  Funds--Service Organizations.") Further, shareholders of all of the 
Trust's
portfolios will vote in the aggregate  and not by portfolio except as  
otherwise
required  by law or when the Board of  Trustees determines that the matter to 
be
voted upon  affects only  the  interests of  the  shareholders of  a  
particular
portfolio. Rule 18f-2 under the 1940 Act provides that any matter required to 
be
submitted  by the provisions of such Act  or applicable state law, or 
otherwise,
to the holders of  the outstanding securities of  an investment company such  
as
the  Trust  shall not  be  deemed to  have  been effectively  acted  upon 
unless
approved by  the  holders  of a  majority  of  the outstanding  shares  of  
each
portfolio  affected by the matter. Rule  18f-2 further provides that a 
portfolio
shall be deemed to be affected by a matter unless it is clear that the 
interests
of each portfolio in the matter are identical or that the matter does not 
affect
any interest of  the portfolio.  Under the Rule  the approval  of an  
investment
advisory  agreement or  any change in  a fundamental investment  policy would 
be
effectively acted  upon with  respect to  a portfolio  only if  approved by  
the
holders  of a majority  of the outstanding voting  securities of such 
portfolio.
However, the  Rule also  provides  that the  ratification  of the  selection  
of
independent  accountants, the  approval of principal  underwriting contracts 
and
the election of trustees are not subject to the separate voting requirements 
and
may be effectively acted upon by  shareholders of the investment company  
voting
without regard to portfolio.
 
COUNSEL
 
   
Willkie  Farr & Gallagher, One Citicorp Center,  153 East 53rd Street, New 
York,
New York 10022, serves as counsel to the Trust and will pass on the legality  
of
the  shares offered  hereby. Willkie  Farr & Gallagher  also acts  as counsel 
to
Lehman Brothers.
    
 
AUDITORS
 
   
Ernst & Young, independent auditors, serve as auditors to the Fund and render 
an
opinion on the Fund's financial statements  annually. Ernst & Young has  
offices
at 200 Clarendon Street, Boston, Massachusetts 02116-5072.
    
 
   
FINANCIAL STATEMENTS
    
 
   
The  Trust's  Annual Report  for the  fiscal  period ended  January 31,  1994 
is
incorporated into this Statement of  Additional Information by reference in  
its
entirety.
    
 
MISCELLANEOUS
 
SHAREHOLDER VOTE
 
As used in this Statement of Additional Information and the Prospectuses for 
the
Funds,  a  "majority  of the  outstanding  shares" of  a  Fund or  of  any 
other
portfolio  means  the   lesser  of   (1)  67%  of   the  shares   of  the   
Fund
 
                                       17
<PAGE>
(irrespective  of class) or of  the portfolio represented at  a meeting at 
which
the holders of more than 50% of the outstanding shares of such Fund or 
portfolio
are present in  person or  by proxy,  or (2) more  than 50%  of the  
outstanding
shares of such Fund (irrespective of class) or of the portfolio.
 
SHAREHOLDER AND TRUSTEE LIABILITY
 
The  Trust is organized as a "business trust" under the laws of the 
Commonwealth
of Massachusetts. Shareholders of such a trust may, under certain 
circumstances,
be held personally liable (as if they were partners) for the obligations of  
the
trust.  The Declaration of Trust of the  Trust provides that shareholders of 
the
Funds shall not be subject to any personal liability for the acts or 
obligations
of the Trust  and that every  note, bond, contract,  order or other  
undertaking
made  by the Trust shall contain a provision to the effect that the 
shareholders
are not  personally liable  thereunder. The  Declaration of  Trust provides  
for
indemnification  out of the trust  property of a Fund  of any shareholder of 
the
Fund held personally  liable solely  by reason  of his  being or  having been  
a
shareholder  and not because of his acts  or omissions or some other reason. 
The
Declaration of Trust also  provides that the Trust  shall, upon request,  
assume
the  defense of any claim made against any shareholder for any act or 
obligation
of the Trust and satisfy any judgment  thereon. Thus, the risk of a  
shareholder
incurring  financial  loss  beyond  its  investment  in  a  Fund  on  account 
of
shareholder liability is limited to circumstances in which the Fund itself 
would
be unable to meet its obligations.
 
   
   The Trust's Declaration of Trust provides further that no trustee, officer 
or
agent of the Trust shall be personally liable for or on account of any 
contract,
debt, tort, claim, damage, judgment or  decree arising out of or connected  
with
the  administration or preservation  of the trust  estate or the  conduct of 
any
business of the Trust, nor shall any trustee be personally liable to any  
person
for  any action or failure to act except by reason of his own bad faith, 
willful
misfeasance, gross negligence in the performance  of his duties or by reason  
of
reckless  disregard of his  obligations and duties as  trustee. It also 
provides
that all persons having any claim against  the trustees or the Trust shall  
look
solely  to  the trust  property  for payment.  With  the exceptions  stated, 
the
Declaration of  Trust provides  that a  trustee is  entitled to  be  
indemnified
against  all liabilities and  expenses reasonably incurred  by him in 
connection
with the defense or disposition of any proceeding in which he may be involved 
or
with which he may be threatened by reason of his being or having been a 
trustee,
and that the trustees have  the power, but not  the duty, to indemnify  
officers
and  employees  of  the  Trust  unless such  person  would  not  be  entitled 
to
indemnification had he been a trustee.
    
 
                                       18


<PAGE>

                       PRIME VALUE MONEY MARKET FUND
                          PRIME MONEY MARKET FUND
                                     
INVESTMENT PORTFOLIOS OFFERED BY
LEHMAN BROTHERS INSTITUTIONAL FUNDS GROUP TRUST

 
 
STATEMENT OF ADDITIONAL INFORMATION
 

                                                           MAY   , 1994
                                                                           
  THIS STATEMENT OF ADDITIONAL INFORMATION IS MEANT TO BE READ IN
CONJUNCTION WITH THE PROSPECTUSES FOR THE PRIME VALUE MONEY MARKET FUND AND
PRIME MONEY MARKET FUND PORTFOLIOS, EACH DATED MAY   , 1994 AS AMENDED
OR SUPPLEMENTED FROM TIME TO TIME, AND IS INCORPORATED BY REFERENCE IN ITS
ENTIRETY INTO EACH PROSPECTUS. BECAUSE THIS STATEMENT OF ADDITIONAL
INFORMATION IS NOT ITSELF A PROSPECTUS, NO INVESTMENT IN SHARES OF THE
PRIME VALUE MONEY MARKET FUND OR PRIME MONEY MARKET FUND PORTFOLIOS SHOULD
BE MADE SOLELY UPON THE INFORMATION CONTAINED HEREIN. COPIES OF A
PROSPECTUS FOR PRIME VALUE MONEY MARKET FUND OR PRIME MONEY MARKET FUND
SHARES MAY BE OBTAINED BY CALLING LEHMAN BROTHERS, INC. ("LEHMAN BROTHERS"), 
AT
1-800-368-5556. CAPITALIZED TERMS USED BUT NOT DEFINED HEREIN HAVE THE SAME
MEANINGS AS IN THE PROSPECTUSES.

TABLE OF CONTENTS

                                                               Page
                                                               ----
   The Trust . . . . . . . . . . . . . . . . . . . . . . .
   Investment Objective and Policies . . . . . . . . . . .
   Additional Purchase and Redemption Information. . . . .
   Management of the Funds . . . . . . . . . . . . . . . .
   Additional Information Concerning Taxes . . . . . . . .
   Dividends . . . . . . . . . . . . . . . . . . . . . . .
   Additional Yield Information. . . . . . . . . . . . . .
   Additional Description Concerning Fund Shares . . . . .
   Counsel . . . . . . . . . . . . . . . . . . . . . . . .
   Auditors. . . . . . . . . . . . . . . . . . . . . . . .
   Financial Statements. . . . . . . . . . . . . . . . . .
   Miscellaneous . . . . . . . . . . . . . . . . . . . . .
   Appendix. . . . . . . . . . . . . . . . . . . . . . . .

                                                                           

<PAGE>

THE TRUST

Lehman Brothers Institutional Funds Group Trust (the "Trust") is a no-load,
open-end management investment company. The Trust currently includes money
market and non-money market portfolios, two of which are Prime Money Market 
Fund
and Prime Value Money Market Fund (individually, a "Fund"; collectively, the
"Funds").

     Although Prime Money Market Fund and Prime Value Money Market Fund
have the same investment adviser and have comparable investment objectives,
their yields will normally vary due to their differing cash flows and their
differing types of portfolio securities (for example, Prime Value Money Market
Fund invests in obligations of foreign branches of U.S. banks and of foreign
banks and corporate issuers and Prime Money Market Fund does not).

     THIS STATEMENT OF ADDITIONAL INFORMATION AND THE FUND'S PROSPECTUSES
RELATE PRIMARILY TO THE FUNDS AND DESCRIBE ONLY THE INVESTMENT OBJECTIVES
AND POLICIES, OPERATIONS, CONTRACTS AND OTHER MATTERS RELATING TO EACH
FUND. INVESTORS WISHING TO OBTAIN SIMILAR INFORMATION REGARDING THE TRUST'S
OTHER PORTFOLIOS MAY OBTAIN SEPARATE PROSPECTUSES DESCRIBING THEM BY
CONTACTING LEHMAN BROTHERS AT 1-800-368-5556.

INVESTMENT OBJECTIVE AND POLICIES

As stated in the Funds' Prospectuses, the investment objective of each Fund
is to provide current income and stability of principal by investing in a
portfolio of money market instruments. The following policies supplement the
description of each Fund's investment objective and policies in the applicable
Prospectus.

     The Funds are managed to provide stability of capital while achieving
competitive yields. The investment adviser intends to follow a value-oriented,
research-driven and risk-averse investment strategy, engaging in a full range 
of
economic, strategic, credit and market-specific analyses in researching
potential investment opportunities.

PORTFOLIO TRANSACTIONS

Subject to the general control of the Trust's Board of Trustees and Lehman
Brothers Global Asset Management Inc. ("LBGAM"), the Funds' investment 
adviser,
is responsible for, makes decisions with respect to, and places orders for all
purchases and sales of portfolio securities for a Fund. LBGAM purchases
portfolio securities for the Funds either directly from the issuer or from
dealers who specialize in money market instruments. Such purchases are usually
without brokerage commissions. In making portfolio investments, LBGAM seeks to
obtain the best net price and the most favorable execution of orders. To the
extent that the execution and price offered by more than one dealer are
comparable, LBGAM may, in its discretion, effect transactions in portfolio
securities with dealers who provide the Trust with research advice or other
services.

     LBGAM may seek to obtain an undertaking from issuers of commercial paper 
or
dealers selling commercial paper to consider the repurchase of such securities
from a Fund prior to their maturity at their original cost plus interest
(interest may sometimes be adjusted to reflect the actual maturity of the
securities) if LBGAM believes that a Fund's anticipated need for liquidity 
makes
such action desirable. Certain dealers (but not issuers) have charged and may 
in
the future charge a higher price for commercial paper where they undertake to
repurchase prior to maturity. The payment of a higher price in order to obtain
such an undertaking reduces the yield which might otherwise be received by a
Fund on the commercial paper. The Trust's Board of Trustees has authorized

2

<PAGE>

LBGAM to pay a higher price for commercial paper where it secures such an
undertaking if LBGAM believes that the prepayment privilege is desirable to
assure a Fund's liquidity and such an undertaking cannot otherwise be 
obtained. 

     Investment decisions for each Fund are made independently from those for
another of the Trust's portfolios or other investment company portfolio or
accounts advised by LBGAM. Such other portfolios may also invest in the same
securities as the Funds. When purchases or sales of the same security are made
at substantially the same time on behalf of such other portfolios, 
transactions
are averaged as to price, and available investments allocated as to amount, in 
a
manner which LBGAM believes to be equitable to each portfolio, including the
Funds. In some instances, this investment procedure may adversely affect the
price paid or received by a Fund or the size of the position obtainable for a
Fund. To the extent permitted by law, LBGAM may aggregate the securities to be
sold or purchased for a Fund with those to be sold or purchased for such other
portfolios in order to obtain best execution.

     The Funds will not execute portfolio transactions through, acquire
portfolio securities issued by, make savings deposits in, or enter into
repurchase agreements with Lehman Brothers, Inc. or LBGAM, or any affiliated
person (as such term is defined in the Investment Company Act of 1940, as
amended (the "1940 Act")) of any of them, except to the extent permitted by 
the
Securities and Exchange Commission (the "SEC"). In addition, with respect to
such transactions, securities, deposits and agreements, the Funds will not 
give
preference to Service Organizations with which a Fund enters into agreements
relating to Class B or Class C shares. (See the applicable Prospectus,
"Management of the Fund -- Service Organizations.")

     The Funds do not intend to seek profits through short-term trading.
Each Fund's annual portfolio turnover will be relatively high, but is not
expected to have a material effect on its net income. Each Fund's portfolio
turnover rate is expected to be zero for regulatory reporting purposes.

ADDITIONAL INFORMATION ON PORTFOLIO INSTRUMENTS

With respect to the variable rate notes and variable rate demand notes 
described
in the applicable Prospectuses, the Funds' investment adviser will consider 
the
earning power, cash flows and other liquidity ratios of the issuers of such
notes and will continuously monitor their financial ability to meet payment
obligations when due. 

     The repurchase price under the repurchase agreements described in the
Funds' Prospectuses generally equals the price paid by a Fund plus interest
negotiated on the basis of current short-term rates (which may be more or less
than the rate on the securities underlying the repurchase agreement). The
collateral underlying each repurchase agreement entered into by the Fund will
consist entirely of direct obligations of the U.S. Government and obligations
issued or guaranteed by U.S. Government agencies or instrumentalities.
Securities subject to repurchase agreements will be held by the Trust's
custodian, sub-custodian or in the Federal Reserve/Treasury book-entry system.
Repurchase agreements are considered to be loans by the Funds under the 1940
Act.


     As stated in the Funds' Prospectuses, a Fund may purchase securities
on a "when issued" basis (I.E., for delivery beyond the normal settlement
date at a stated price and yield). When a Fund agrees to purchase
when-issued securities, the custodian will set aside cash or liquid
portfolio securities equal to the amount of the commitment in a separate
account. Normally, the custodian will set aside portfolio securities to
satisfy a purchase commitment, and in such a case that Fund may be required
subsequently to place additional assets in the separate account in order to
ensure that the value of the account remains equal to the amount of such
Fund's commitment. It may be expected that a Fund's net assets will
fluctuate to a greater degree when it sets aside portfolio securities to
cover such purchase commitments than when it sets aside cash. Because a
Fund will set aside cash or liquid assets to satisfy its purchase
commitments in the manner described, such Fund's liquidity and ability to
manage its portfolio might be affected in the event its commitments to
purchase when-issued 

3

<PAGE>

securities ever exceeded 25% of the value of its assets. When a Fund engages 
in
when-issued transactions, it relies on the seller to consummate the trade.
Failure of the seller to do so may result in a Fund's incurring a loss or
missing an opportunity to obtain a price considered to be advantageous. 
Neither
Fund intends to purchase when-issued securities for speculative purposes but
only in furtherance of its investment objective. Each Fund reserves the right 
to
sell these securities before the settlement date if it is deemed advisable.

     Examples of the types of U.S. government obligations that may be held
by a Fund include, in addition to U.S. Treasury Bills, the obligations of
the Federal Housing Administration, Farmers Home Administration,
Export-Import Bank of the United States, Small Business Administration,
Government National Mortgage Association, Federal National Mortgage
Association, Federal Financing Bank, General Services Administration,
Student Loan Marketing Association, Central Bank for Cooperatives, Federal
Home Loan Banks, Federal Home Loan Mortgage Corporation, Federal
Intermediate Credit Banks, Federal Land Banks, Federal Farm Credit Banks,
Maritime Administration, Resolution Trust Corporation, Tennessee Valley
Authority, U.S. Postal Service and Washington D.C. Armory Board.

     For purposes of Prime Value Money Market Fund's investment policies
with respect to obligations of issuers in the banking industry, the assets
of a bank or savings institution will be deemed to include the assets of
its domestic and foreign branches. Prime Value Money Market Fund's
investments in the obligations of foreign branches of U.S. banks and of
foreign banks and other foreign issuers may subject Prime Value Money
Market Fund to investment risks that are different in some respects from
those of investment in obligations of U.S. domestic issuers. Such risks
include future political and economic developments, the possible seizure or
nationalization of foreign deposits, the possible establishment of exchange
controls or the adoption of other foreign governmental restrictions which
might adversely affect the payment of principal and interest on such
obligations. In addition, foreign branches of U.S. banks and foreign banks
may be subject to less stringent reserve requirements and foreign issuers
generally are subject to different accounting, auditing, reporting and
record keeping standards than those applicable to U.S. issuers. Prime Value
Money Market Fund will acquire securities issued by foreign branches of
U.S. banks or foreign issuers only when the Fund's investment adviser
believes that the risks associated with such instruments are minimal.

     Among the bank obligations in which the Funds may invest are notes
issued by banks. These notes, which are exempt from registration under
federal securities laws, are not deposits of the banks and are not insured
by the Federal Deposit Insurance Corporation or any other insurer. Holders
of notes rank on a par with other unsecured and unsubordinated creditors of
the banks. Notes may be sold at par or sold on a discount basis and may
bear fixed or floating rates of interest.

     Each Fund may invest in asset-backed and receivable-backed securities.
Several types of asset-backed and receivable-backed securities have been
offered to investors, including interests in pools of credit card
receivables and motor vehicle retail installment sales contracts and
security interests in the vehicles securing the contracts. Payments of
principal and interest on these securities are passed through to
certificate holders. In addition, asset-backed securities often carry
credit protection in the form of extra collateral, subordinate
certificates, cash reserve accounts and other enhancements. An investor's
return on these securities may be affected by early prepayment of principal
on the underlying receivables or sales contracts.  Any asset-backed or
receivable-backed securities held by the Fund must comply with the
portfolio maturity and quality requirements contained in Rule 2a-7 under
the 1940 Act. Each Fund will monitor the performance of these investments
and will not acquire any such securities unless rated in the highest rating
category by at least two nationally recognized statistical rating 
organizations
("NRSROs").

     As stated in the Funds' Prospectuses, each Fund may invest in
obligations issued by state and local governmental entities. Municipal
securities are issued by various public entities to obtain funds for
various public purposes, including the construction of a wide range of
public facilities, the refunding of outstanding obligations, the payment of
general operating expenses and the extension of loans to public
institutions and facilities. Private activity bonds that are issued by or
on behalf of public authorities to finance various privately operated
facilities are considered to be municipal securities and may be 

4

<PAGE>

purchased by a Fund. Dividends paid by a Fund that are derived from interest 
on
municipal securities would be taxable to that Fund's shareholders for federal
income tax purposes.

     The SEC has adopted Rule 144A under the Securities Act of 1933, as
amended (the "1933 Act"), that allows for a broader institutional trading
market for securities otherwise subject to restrictions on resale to the
general public. Rule 144A establishes a "safe harbor" from the registration
requirements of the 1933 Act for resales of certain securities to qualified
institutional buyers. The Funds' investment adviser anticipates that the 
market
for certain restricted securities such as institutional commercial paper will
expand further as a result of this regulation and the development of automated
systems for the trading, clearance and settlement of unregistered securities 
of
domestic and foreign issuers, such as the PORTAL System sponsored by the
National Association of Securities Dealers.

     The investment adviser for each Fund will monitor the liquidity of
restricted and other illiquid securities under the supervision of the Board of
Trustees. In reaching liquidity decisions with respect to Rule 144A 
securities,
the Funds' investment adviser will consider, inter alia, the following 
factors:
(1) the unregistered nature of a Rule 144A security; (2) the frequency of 
trades
and quotes for a Rule 144A security; (3) the number of dealers wishing to
purchase or sell the Rule 144A security and the number of other potential
purchasers; (4) dealer undertakings to make a market in the Rule 144A 
security;
(5) the trading markets for the Rule 144A security; and (6) the nature of the
Rule 144A security and the nature of the marketplace trades (E.G., the time
needed to dispose of the Rule 144A security, the method of soliciting offers 
and
the mechanics of the transfer).

     The Appendix to this Statement of Additional Information contains a
description of the relevant rating symbols used by NRSROs for commercial
obligations that may be purchased by each Fund.

INVESTMENT LIMITATIONS

The Funds' Prospectuses summarize certain investment limitations that may
not be changed without the affirmative vote of the holders of a majority of
a Fund's outstanding shares (as defined below under "Miscellaneous").
Investment limitations numbered 1 through 7 may not be changed without such
a vote of shareholders; investment limitations 8 through 13 may be changed
by a vote of the Trust's Board of Trustees at any time.

     A Fund may not:

           1.  Purchase securities of any one issuer if as a result more
     than 5% of the value of the Fund's assets would be invested in the
     securities of such issuer, except that up to 25% of the value of the
     Fund's total assets may be invested without regard to such 5%
     limitation and provided that there is no limitation with respect to
     investments in U.S. government securities.
     
           2.  Borrow money, except from banks for temporary purposes and
     then in amounts not exceeding 10% of the value of a Fund's total
     assets at the time of such borrowing; or mortgage, pledge or
     hypothecate any assets except in connection with any such borrowing
     and in amounts not in excess of the lesser of the dollar amounts
     borrowed or 10% of the value of the Fund's total assets at the time of
     such borrowing. Additional investments will not be made when
     borrowings exceed 5% of the Fund's assets.
     
           3.  Purchase any securities which would cause 25% or more of the
     value of its total assets at the time of such purchase to be invested
     in the securities of one or more issuers conducting their principal
     business activities in the same industry, except that Prime Value
     Money Market Fund will invest 25% or more of the value of its total
     assets in obligations of issuers in the banking industry or in
     obligations, such as repurchase agreements, secured by such
     obligations (unless the Fund is in a temporary defensive position);
     provided that there is no limitation with 

5

<PAGE>

     respect to investments in U.S. government securities or, in the case of
     Prime Money Market Fund, in bank instruments issued by domestic banks.
     
           4.  Make loans, except that the Fund may purchase or hold debt
     instruments in accordance with its investment objective and policies,
     and may enter into repurchase agreements with respect to portfolio
     securities.
     
           5.  Act as an underwriter of securities, except insofar as the
     Fund may be deemed an underwriter under applicable securities laws in
     selling portfolio securities.
     
           6.  Purchase or sell real estate or real estate limited
     partnerships, provided that the Fund may purchase securities of
     issuers which invest in real estate or interests therein.
     
           7.  Purchase or sell commodities contracts, or invest in oil,
     gas or mineral exploration or development programs or in mineral
     leases.
     
           8.  Knowingly invest more than 10% of the value of the Fund's
     assets in securities that may be illiquid because of legal or
     contractual restrictions on resale or securities for which there are
     no readily available market quotations.
     
           9.  Purchase securities on margin, make short sales of
     securities or maintain a short position.
     
          10.  Write or sell puts, calls, straddles, spreads or
     combinations thereof.
     
          11.  Invest in securities if as a result the Fund would then have
     more than 5% of its total assets in securities of companies (including
     predecessors) with less than three years of continuous operation.
     
          12.  Purchase securities of other investment companies except as
     permitted under the 1940 Act or in connection with a merger,
     consolidation, acquisition or reorganization.
     
          13.  Invest in warrants.
     
     In order to permit the sale of Fund shares in certain states, the
Funds may make commitments more restrictive than the investment policies
and limitations above. Should a Fund determine that any such commitments
are no longer in its best interests, it will revoke the commitment by
terminating sales of its shares in the state involved. Further, with
respect to the above-stated third limitation, each Fund will consider
wholly owned finance companies to be in the industries of their parents, if
their activities are primarily related to financing the activities of their
parents, and will divide utility companies according to their services; for
example, gas, gas transmission, electric and gas, electric, and telephone
will each be considered a separate industry.

ADDITIONAL PURCHASE AND REDEMPTION INFORMATION

Information on how to purchase and redeem each Fund's shares is included in
the applicable Prospectuses. The issuance of shares is recorded on a Fund's
books, and share certificates are not issued.

     The regulations of the Comptroller of the Currency (the "Comptroller")
provide that funds held in a fiduciary capacity by a national bank approved by
the Comptroller to exercise fiduciary powers must be invested in accordance 
with
the instrument establishing the fiduciary relationship and local law. The 
Trust
believes that the purchase of Prime Value Money Market Fund and Prime Money
Market Fund shares by such national banks acting on behalf of their
fiduciary 

6

<PAGE>

accounts is not contrary to applicable regulations if consistent with the
particular account and proper under the law governing the administration of 
the
account. 

     Conflict of interest restrictions may apply to an institution's
receipt of compensation paid by a Fund on fiduciary funds that are invested
in a Fund's Class B or Class C shares. Institutions, including banks
regulated by the Comptroller and investment advisers and other money managers
subject to the jurisdiction of the SEC, the Department of Labor or state
securities commissions, are urged to consult their legal advisors before
investing fiduciary funds in a Fund's Class B or Class C shares.

     Prior to effecting a redemption of shares represented by certificates,
The Shareholder Services Group, Inc. ("TSSG"), the Trust's transfer agent,
must have received such certificates at its principal office. All such
certificates must be endorsed by the redeeming shareholder or accompanied
by a signed stock power, in each instance with the signature guaranteed by
a commercial bank or a member of a major stock exchange, unless other
arrangements satisfactory to a Fund have previously been made. A Fund may
require any additional information reasonably necessary to evidence that a
redemption has been duly authorized.

     Under the 1940 Act, a Fund may suspend the right of redemption or
postpone the date of payment upon redemption for any period during which the 
New
York Stock Exchange ("Exchange") is closed, other than customary weekend and
holiday closings, or during which trading on said Exchange is restricted, or
during which (as determined by the SEC by rule or regulation) an emergency
exists as a result of which disposal or valuation of portfolio securities is 
not
reasonably practicable, or for such other periods as the SEC may permit. (A 
Fund
may also suspend or postpone the recordation of the transfer of its shares 
upon
the occurrence of any of the foregoing conditions.) In addition, a Fund may
redeem shares involuntarily in certain other instances if the Board of 
Trustees
determines that failure to redeem may have material adverse consequences to 
that
Fund's shareholders in general. Each Fund is obligated to redeem shares solely
in cash up to $250,000 or 1% of such Fund's net asset value, whichever is 
less,
for any one shareholder within a 90-day period. Any redemption beyond this
amount will also be in cash unless the Board of Trustees determines that
conditions exist which make payment of redemption proceeds wholly in cash 
unwise
or undesirable. In such a case, a Fund may make payment wholly or partly in
readily marketable securities or other property, valued in the same way as 
that
Fund determines net asset value. See "Net Asset Value" below for an example of
when such redemption or form of payment might be appropriate. Redemption in 
kind
is not as liquid as a cash redemption. Shareholders who receive a redemption 
in
kind may incur transaction costs, if they sell such securities or property, 
and
may receive less than the redemption value of such securities or property upon
sale, particularly where such securities are sold prior to maturity.

     Any institution purchasing shares on behalf of separate accounts will
be required to hold the shares in a single nominee name (a "Master
Account"). Institutions investing in more than one of the Trust's
portfolios, or classes or sub-classes of shares, must maintain a separate
Master Account for each Fund's class or sub-class of shares. Sub-accounts may 
be
established by name or number either when the Master Account is opened or
later.

NET ASSET VALUE

Each Fund's net asset value per share is calculated by dividing the total
value of the assets belonging to a Fund, less the value of any liabilities
charged to such Fund, by the total number of that Fund's shares outstanding
(irrespective of class or sub-class). "Assets belonging to" a Fund consist
of the consideration received upon the issuance of Fund shares together
with all income, earnings, profits and proceeds derived from the investment
thereof, including any proceeds from the sale of such investments, any
funds or payments derived from any reinvestment of such proceeds, and a
portion of any general assets of the Trust not belonging to a particular
portfolio. Assets belonging to a Fund are charged with the direct
liabilities of that Fund and with a share of the general liabilities of the
Trust allocated on a daily basis in proportion to the relative net assets
of such Fund and the Trust's other portfolios. Determinations made in good
faith and in accordance with generally 

7

<PAGE>

accepted accounting principles by the Trust's Board of Trustees as to the
allocation of any assets or liabilities with respect to a Fund are conclusive.

     As stated in the applicable Prospectuses, in computing the net asset
value of its shares for purposes of sales and redemptions, each Fund uses
the amortized cost method of valuation. Under this method, a Fund values
each of its portfolio securities at cost on the date of purchase and
thereafter assumes a constant proportionate amortization of any discount or
premium until maturity of the security. As a result, the value of the
portfolio security for purposes of determining net asset value normally
does not change in response to fluctuating interest rates. While the
amortized cost method seems to provide certainty in portfolio valuation, it
may result in valuations of a Fund's securities which are higher or lower
than the market value of such securities.

     In connection with its use of amortized cost valuation, each Fund
limits the dollar-weighted average maturity of its portfolio to not more
than 90 days and does not purchase any instrument with a remaining maturity
of more than thirteen months (397 days) (with certain exceptions). The
Trust's Board of Trustees has also established procedures, pursuant to
rules promulgated by the SEC, that are intended to stabilize each Fund's
net asset value per share for purposes of sales and redemptions at $1.00.
Such procedures include the determination, at such intervals as the Board
deems appropriate, of the extent, if any, to which a Fund's net asset value
per share calculated by using available market quotations deviates from
$1.00 per share. In the event such deviation exceeds 1/2 of 1%, the Board
will promptly consider what action, if any, should be initiated. If the
Board believes that the amount of any deviation from a Fund's $1.00
amortized cost price per share may result in material dilution or other
unfair results to investors or existing shareholders, it will take such
steps as it considers appropriate to eliminate or reduce to the extent
reasonably practicable any such dilution or unfair results. These steps may
include selling portfolio instruments prior to maturity to realize capital
gains or losses or to shorten a Fund's average portfolio maturity,
redeeming shares in kind, reducing or withholding dividends, or utilizing a
net asset value per share determined by using available market quotations.

MANAGEMENT OF THE FUNDS

TRUSTEES AND OFFICERS

The Trust's trustees and executive officers, their addresses, principal
occupations during the past five years and other affiliations are as
follows:

<TABLE>
<CAPTION>

                                                                               
PRINCIPAL OCCUPATIONS DURING PAST 5 YEARS AND 
         NAME AND ADDRESS               POSITION WITH THE TRUST                               
OTHER AFFILIATIONS
         ----------------               -----------------------                
----------------------------------------------
         <S>                            <C>                                    
<C>


8

<PAGE>

 STEVEN SPIEGEL (1)(2)             Vice Chairman of the Board                   
Managing Director, Lehman Brothers: President
3 World Financial Center           and Trustee                                  
Lehman Brothers Global Asset Management Inc.:
New York, NY 10285                                                              
formerly Chairman. Lehman Brothers International
                                                                                
(Europe)
CHARLES F.                         Trustee                                      
Consultant: formerly Chairman of the Board,
 BARBER (2)(3)                                                                  
ASARCO Incorporated
 66 Glenwood Drive                                                              
 Greenwich, CT  06830
BURT N. DORSETT (2)(3)             Trustee                                      
Managing Partner, Dorsett McCabe Capital
201 East 62nd Street                                                            
Management, Inc., an investment counselling firm; 
New York, NY  10022                                                             
Director, Research Corporation Technologies, a
                                                                                
non-profit patent-clearing and licensing operation; 
                                                                                
formerly President, Westinghouse Pension
                                                                                
Investments Corporation; formerly Executive Vice
                                                                                
President and Trustee, College Retirement Equities 
                                                                                
Fund, Inc., a variable annuity fund; and formerly 
                                                                                
Investment Officer, University of Rochester
EDWARD J. KAIER (2)(3)             Trustee                                      
Partner with the law firm of Hepburn Willcox
1100 One Penn Center                                                            
Hamilton & Putnam
Philadelphia, PA 19103                                                          
S. DONALD WILEY (2)(3)             Trustee                                      
Vice-Chairman and Trustee, H.J. Heinz Company
USX Tower                                                                       
Foundation; prior to October 1990, Senior Vice
Pittsburgh, PA  15219                                                           
President, General Counsel and Secretary, H.J.
                                                                                
Heinz Company

9

<PAGE>

PETER MEENAN                       President                                    
Managing Director of Lehman Brothers Inc.; 
260 Franklin Street                                                             
President of Lehman Brothers Institutional Funds 
Boston, MA 02110                                                                
Group Trust; Formerly, Director, Senior Executive 
                                                                                
Vice President and Director of Institutional Fund 
                                                                                
Services, The Boston Company Advisors, Inc. from 
                                                                                
February 1984 to May 1993; Director, Funds 
                                                                                
Distributor, Inc. (1982-1993); Senior Vice 
                                                                                
President, The Boston Company Advisors, Inc. 
                                                                                
from August 1984 to May 1993                      
JOHN M. WINTERS                    Vice President and                           
Senior Vice President and Senior Money Market 
3 World Financial Center           Investment Officer                           
Portfolio Manager, Lehman Brothers Global Asset
New York, NY 10285                                                              
Management Inc.; formerly Product Manager with 
                                                                                
Lehman Brothers Capital Markets Group          
MICHAEL C. KARDOK                  Treasurer                                    
Vice President, The Shareholder Services Group, 
One Exchange Place                                                              
Inc.; prior to May 1994 Vice President, The Boston 
Boston, MA 02109                                                                
Company Advisors, Inc.                             

10

<PAGE>

PATRICIA L. BICKIMER               Secretary                                    
Vice President and Associate General Counsel, The 
One Exchange Place                                                              
Shareholder Services Group, Inc.; prior to May 
Boston, MA 02109                                                                
1994, Vice President and Associate General 
                                                                                
Counsel, The Boston Company Advisors, Inc.

11

<PAGE>

<FN>

_____

     1.   Considered by the Trust to be "interested persons" of the Trust
          as defined in the 1940 Act.
     
     2.  Audit Committee Member.
     
     3.  Nominating Committee Member.

</TABLE>


     
     One trustee of the Trust, Mr. Dorsett, serves as trustee or director of
other investment companies for which Lehman Brothers and LBGAM serve as 
distributor
and investment adviser.

     No employee of Lehman Brothers, LBGAM, or TSSG receives
any compensation from the Trust for acting as an officer or trustee of the
Trust. The Trust pays each trustee who is not a director, officer or
employee of Lehman Brothers, LBGAM, or TSSG or any of their affiliates, a fee 
of
$20,000 per annum plus $1,250 per meeting attended and reimburses them for
travel and out-of-pocket expenses.

     For the fiscal year ended January 31, 1994, such fees and expenses 
totalled
$9,589 for each Fund, $94,754 in ten aggregate for the Trust. As of May 13, 
1994,
Trustees and officers of the Trust as a group beneficially owned less than 1% 
of
the outstanding shares of each of the Funds.

     By virtue of the responsibilities assumed by Lehman Brothers, LBGAM, TSSG
and their affiliates under their respective agreements with the Trust, the 
Trust
itself requires no employees in addition to its officers.

INVESTMENT ADVISER

LBGAM serves as the investment adviser to each of the Funds. The investment
advisory agreements provide that LBGAM is responsible for all investment
activities of the Funds, including executing portfolio strategy, effecting 
Fund
purchase and sale transactions and employs professional portfolio managers and
security analysts who provide research for the Funds.

     The Investment Advisory Agreements with respect to each of the Funds will
continue in effect for a period of two years from February 5, 1993 and
thereafter from year to year provided the continuance is approved annually (i)
by the Trust's Board of Trustees or (ii) by a vote of a "majority" (as defined
in the 1940 Act) of a Fund's outstanding voting securities, except that in 
either event the continuance is also approved by a majority of the Trustees of 
the Trust who are not "interested persons" (as defined in the 1940 Act). Each
Investment Advisory Agreement may be terminated (i) on 60 days' written notice
by the Trustees of the Trust, (ii) by vote of holders of a majority of a 
Fund's
outstanding voting securities or upon 90 days' written notice by Lehman
Brothers, or (iii) automatically in the event of its assignment (as defined in
the 1940 Act).

     As compensation for LBGAM's services rendered to the Fund, the Fund pays 
a
fee, computed daily and paid monthly, at the annual rate of .30% of the 
average
daily net assets of the Fund. For the period February 8, 1993 (commencement of
operations) to January 31, 1994, LBGAM received net advisory fees in the
following amounts: the Prime Value Money Market Fund, $1,106,003 and the Prime
Money Market Fund, $1,165,899. Waivers by LBGAM of 

12

<PAGE>

advisory fees and reimbursement of expenses to which it was entitled for
amounted to: the Prime Value Money Market Fund, $1,106,003 and $757,799,
respectively, and the Prime Money Market Fund $1,165,899 and $0, respectively.
In order to maintain competitive expense ratios during 1994 through 1997, the
investment adviser and administrator have agreed to reimburse the Funds if 
total
operating expenses exceed certain levels. See "BACKGROUND AND EXPENSE
INFORMATION" in each Fund's Prospectus. 

PRINCIPAL HOLDERS 
 
     At May 13, 1994, the principal holders of each Fund were as follows: 

<TABLE>
<CAPTION>

                                                                                                
PERCENTAGE OF SHARES
                                                                 NAME AND 
ADDRESS                HELD OF RECORD ONLY 
                                                                 -------------
---               --------------------
<S>                                                              <C>                            
<C>


Prime Value Money Market Fund 

Class A Shares                                                   Bankers Trust 
Co.                     13.68% 
                                                                 Securities 
Lending 
                                                                 130 Liberty 
Street 
                                                                 New York, NY 
10006 

                                                                 Time Warner 
Entertainment              9.15% 
                                                                  Co., L.P. 
                                                                 75 
Rockefeller Plaza 
                                                                 New York, NY 
10019 

                                                                 Continental 
Bank                       5.11% 
                                                                 231 South 
LaSalle 
                                                                 Chicago, IL 
60697 
                                                                 Class B 
Shares

Class B Shares                                                   Hare & Co.                            
83.22% 
                                                                 c/o Bank of 
New York 
                                                                 Special 
Processing Dept. 
                                                                 One Wall 
Street 
                                                                 New York, NY 
10286 

                                                                 Sun Bank NA 
as Escrow                 16.77% 
                                                                  Agent for 
Florida 
                                                                  Healthcare 
Plan 
                                                                 225 East 
Robinson Street 
                                                                 Suite 358 
                                                                 Orlando, FL 
32001 

Prime Money Market Fund: 

Class A Shares                                                   Filler & Co.                          
10.52% 
                                                                 State Street 
Bank & 
                                                                  Trust 
Company 
                                                                 P.O. Box 351 

13

<PAGE>

                                                                 Boston, MA 
02101 
                                                                 Bankers Trust 
Co.                      7.63% 
                                                                 Securities 
Lending 
                                                                 130 Liberty 
Street 
                                                                 New York, NY 
10006 
 
                                                                 Chiquita 
Brands Int'l, Inc.            5.34% 
                                                                 250 East 
Fifth Street 
                                                                 Cincinnati, 
OH 45202 

Class B Shares                                                   Harris Trust 
and Savings Bank         87.31% 
                                                                 200 West 
Monroe Street 
                                                                 Chicago, IL 
60606 

                                                                 Hare & Co.                            
12.56% 
                                                                 c/o Bank of 
New York 
                                                                 Special 
Processing Dept. 
                                                                 One Wall 
Street 
                                                                 New York, NY 
10286 

</TABLE>


     As of May 13, 1994, the Class C shares of the Funds had not been offered 
to
the public and all outstanding shares 
were held by Lehman Brothers. 
 
     The shareholders described above have indicated that they each hold their
shares on behalf of various accounts and not as beneficial owners. To the 
extent
that any shareholder is the beneficial owner of more than 25% of the 
outstanding
shares of a Fund, such shareholder may be deemed to be a "control person" of
that Fund for purposes of the 1940 Act. 
 
ADMINISTRATOR AND TRANSFER AGENT 
 
TSSG, a subsidiary of First Data Corporation, is located at One Exchange 
Place,
Boston, Massachusetts 02109, and serves as the Trust's administrator and
transfer agent. As the Funds' administrator, TSSG has agreed to provide the
following services: (i) assist generally in supervising a Fund's
operations, providing and supervising the operation of an automated data
processing system to process purchase and redemption orders, providing
information concerning a Fund to its shareholders of record, handling
shareholder problems, supervising the services of employees whose principal
responsibility and function is to preserve and strengthen shareholder
relations, and monitoring the arrangements pertaining to the Funds'
agreements with Service Organizations; (ii) prepare reports to a Fund's
shareholders and prepare tax returns and reports to and filings with the
SEC; (iii) compute the respective net asset value per share of each Fund;
(iv) provide the services of certain persons who may be elected as trustees
or appointed as officers of the Trust by the Board of Trustees; and
(v) maintain the registration or qualification of a Fund's shares for sale
under state securities laws. TSSG receives as compensation for its services
rendered under an administration agreement, an administrative fee, computed 
daily and paid monthly, at the annual rate of .10% of the average daily net 
assets of each Fund. TSSG pays Boston Safe, the Fund's custodian, a portion 
of its monthly administration fee for custody services rendered to the Funds.

     Prior to May 6, 1994, The Boston Company Advisors, Inc. ("TBCA"), an
wholly-owned subsidiary of Mellon Bank Corporation ("Mellon"), served as
administrator of the Funds. On May 6, 1994, TSSG acquired TBCA's 

14

<PAGE>

third party mutual fund administation business from Mellon, and each Fund's
administration agreement with TBCA was assigned to TSSG. For the period 
February
8, 1993 (commencement of operations) to January 31, 1994, TBCA received net
administration fees in the following amounts: the Prime Value Money Market 
Fund,
$1,106,003 and the Prime Money Market Fund, $1,165,899. Waivers by TBCA of
administrator fees and reimbursement of expenses to which it was entitled for
amounted to: the Prime Value Money Market Fund, $1,106,003 and $192,939,
respectively, and the Prime Money Market Fund, $1,165,899 and $115,300,
respectively. In order to maintain competitive expense ratios during 1994
through 1997, the investment adviser and administrator have agreed to 
reimburse
the Funds if total operating expenses exceed certain levels. See "BACKGROUND 
AND
EXPENSE INFORMATION" in each Fund's Prospectus. 
 
     Under the transfer agency agreement, TSSG maintains the shareholder 
account
records for the Trust, handles certain communications between shareholders and
the Trust and distributes dividends and distributions payable by the Trust and
produces statements with respect to account activity for the Trust and its
shareholders. For these services, TSSG receives a monthly fee based on average
annual assets and is reimbursed for out-of-pocket expenses. 

DISTRIBUTORS

Lehman Brothers acts as a distributor of each Fund's shares. Each Fund's
shares are sold on a continuous basis by Lehman Brothers as agent. The
distributor pays the cost of printing and distributing prospectuses to
persons who are not shareholders of a Fund (excluding preparation and
printing expenses necessary for the continued registration of a Fund's
shares) and of preparing, printing and distributing all sales literature.
No compensation is payable by a Fund to Lehman Brothers for its distribution
services.

     Lehman Brothers is comprised of several major operating business
units. Lehman Brothers Institutional Funds Group is the business group
within Lehman Brothers that is primarily responsible for the distribution
and client service requirements of the Trust and its shareholders. Lehman
Brothers Institutional Funds Group has been serving institutional clients'
investment needs exclusively for more than 20 years, emphasizing high
quality individualized service to clients.

CUSTODIAN

Boston Safe Deposit and Trust Company ("Boston Safe"), a wholly owned
subsidiary of The Boston Company, Inc., is located at One Boston Place,
Boston, Massachusetts 02108, and serves as the custodian of the Trust
pursuant to a custody agreement. Under the custody agreement, Boston Safe
holds each Fund's portfolio securities and keeps all necessary accounts and
records. For its services, Boston Safe receives a monthly fee based upon
the month-end market value of securities held in custody and also receives
securities transaction charges, including out-of-pocket expenses. The
assets of the Trust are held under bank custodianship in compliance with
the 1940 Act.

SERVICE ORGANIZATIONS

15

<PAGE>

As stated in the Funds' Prospectuses, a Fund will enter into an agreement
with each financial institution which may purchase Class C shares. The Fund 
will
enter into an agreement with each Service Organization whose customers
("Customers) are the beneficial owners of Class C shares that requires the
Service Organization to provide certain services to Customers in consideration
of such Fund's payment of .35% of the average daily net asset value of that
Fund's Class C shares beneficially owned by the Customers. Such services
include: (i) aggregating and processing purchase and redemption requests from
Customers and placing net purchase and redemption orders with a Fund's
distributor; (ii) processing dividend payments from a Fund on
behalf of Customers; (iii) providing information periodically to Customers
showing their positions in a Fund's shares; (iv) arranging for bank wires;
(v) responding to Customer inquiries relating to the services performed by
the Service Organization and handling correspondence; (vi) forwarding
shareholder communications from a Fund (such as proxies, shareholder
reports, annual and semi-annual financial statements, and dividend,
distribution and tax notices) to Customers; (vii) acting as shareholder of
record or nominee; and (viii) other similar account administrative
services. In addition, a Service Organization at its option, may also provide 
to
its Customers of Class C shares (a) a service that invests the assets of their
accounts in shares pursuant to specific or pre-authorized instructions: (b)
provide sub-accounting with respect to shares beneficially owned by Customers 
or
the information necessary for sub-accounting: and (c) provide checkwriting
services. Service Organizations that purchase Class C shares
will also provide assistance in connection with the support of the 
distribution
of Class C shares to its Customers, including marketing assistance and the
forwarding to Customers of sales literature and advertising provided by a
distributor of the shares.

     Holders of Class B shares of a Fund will receive the services set
forth in (i), and (v) and may receive one or more of the services set
forth in (ii), (iii), (iv), (vi) and (viii) above. In consideration of the
services to be rendered in connection with this Class of shares pursuant to
an agreement between the Fund and the Service Organization, the Fund will
pay the Service Organization .25% of the average daily net asset value of the
Class B shares held by the Service Organization. A Service Organization, at 
its
option, may also provide to its Customers of Class B shares services
including: (a) acting as shareholder of record and as nominee: (b) providing
Customers with a service that invests the assets of their accounts in shares
pursuant to specific or pre-authorized instruction: (c) provide sub-accounting
with respect to shares beneficially owned by Customers or the information
necessary for sub-accounting: (d) providing information periodically to
Customers showing their position in shares: (e) arranging for bank wires: (f)
forwarding shareholder communications from the fund (such as proxies,
shareholder reports, annual and semi-annual financial statements and dividend,
distribution, and tax notices) to Customers: (g) providing reasonable 
assistance
in connection with the distribution of shares to Customers: and (h) providing
such other similar services as the Fund may reasonably request to the extent
Service Organization is permitted to do so under applicable statutes, rules, 
or regulations.


     Each Fund's agreements with Service Organizations are governed by a
Shareholder Services Plan (the "Plan") that has been adopted by the Trust's
Board of Trustees pursuant to an exemptive order granted by the SEC. Under
this Plan, the Board of Trustees reviews, at least quarterly, a written
report of the amounts expended under each Fund's agreements with Service
Organizations and the purposes for which the expenditures were made. In
addition, a Fund's arrangements with Service Organizations must be approved
annually by a majority of the Trust's trustees, including a majority of the
trustees who are not "interested persons" of the Trust as defined in the
1940 Act and have no direct or indirect financial interest in such
arrangements (the "Disinterested Trustees").

     The Board of Trustees has approved each Fund's arrangements with
Service Organizations based on information provided by the Trust's service
contractors that there is a reasonable likelihood that the arrangements
will benefit such Fund and its shareholders by affording the Fund greater
flexibility in connection with the servicing of the accounts of the
beneficial owners of its shares in an efficient manner. Any material
amendment to a Fund's arrangements with Service Organizations must be
approved by a majority of the Trust's Board of Trustees (including a
majority of the Disinterested 

16

<PAGE>

Trustees). So long as a Fund's arrangements with Service Organizations are in
effect, the selection and nomination of the members of the Trust's Board of
Trustees who are not "interested persons" (as defined in the 1940 Act) of the
Trust will be committed to the discretion of such non-interested trustees.

    For the period February 8, 1993 (commencement of operations) to 
January 31, 1994, the following service fees were paid by the Prime Value 
Money Market Fund: Class B shares, $____ and Class C shares, $____. For the 
period February 8, 1993 (commencement of operations) to January 31, 1994, the 
following service fees were paid by the Prime Money market Fund: Class B 
shares,
$____ and Class C shares, $____.

EXPENSES

A Fund's expenses include taxes, interest, fees and salaries of the Trust's
trustees and officers who are not directors, officers or employees of the
Trust's service contractors, SEC fees, state securities qualification fees,
costs of preparing and printing prospectuses for regulatory purposes and
for distribution to shareholders, advisory and administration fees, charges
of the custodian and of the transfer and dividend disbursing agent, Service
Organization fees, certain insurance premiums, outside auditing and legal
expenses, costs of shareholder reports and shareholder meetings and any
extraordinary expenses. The Funds also pay for brokerage fees and
commissions (if any) in connection with the purchase and sale of portfolio
securities. LBGAM and TSSG have agreed that if, in any fiscal year, the
expenses borne by a Fund exceed the applicable expense limitations imposed by
the securities regulations of any state in which shares of that Fund are
registered or qualified for sale to the public, it will reimburse that Fund 
for
any excess to the extent required by such regulations in the same proportion
that each of their fees bears to the Fund's aggregate fees for investment
advice and administrative services. Unless otherwise required by law, such
reimbursement would be accrued and paid on the same basis that the advisory 
and
administration fees are accrued and paid by that Fund. To each Fund's 
knowledge,
of the expense limitations in effect on the date of this Statement of 
Additional
Information, none is more restrictive than two and one-half percent (2 1/2%) 
of
the first $30 million of a Fund's average annual net assets, two percent (2%) 
of
the next $70 million of the average annual net assets and one and one-half
percent (1 1/2%) of the remaining average annual net assets.

ADDITIONAL INFORMATION CONCERNING TAXES

The following summarizes certain additional tax considerations generally
affecting a Fund and its shareholders that are not described in the Funds'
Prospectuses. No attempt is made to present a detailed explanation of the
tax treatment of a Fund or its shareholders or possible legislative
changes, and the discussion here and in the applicable Prospectuses is not
intended as a substitute for careful tax planning.

     As stated in each Prospectus, each Fund qualified as a regulated 
investment
company under the Code and intends to so qualify in future years. In order to 
so
qualify under the Code for a taxable year, a Fund must satisfy the 
distribution
requirement described in the Prospectuses, derive at least 90% of its gross
income for the year from certain qualifying sources, comply with certain
diversification tests and derive less than 30% of its gross income for the
year from the sale or other disposition of securities and certain other
investments held for less than three months. Interest (including original
issue plus accrued market discount) received by a Fund at maturity or
disposition of a security held for less than three months will not be
treated as gross income derived from the sale or other disposition of such
security within the meaning of the 30% requirement. However, any income in
excess of such interest will be treated as gross income from the sale or
other disposition of securities for this purpose.

     A 4% non-deductible excise tax is imposed on regulated investment
companies that fail currently to distribute an amount equal to specified
percentages of their ordinary taxable income and capital gain net income
(excess of capital gains over capital losses). Each Fund intends to make
sufficient distributions or deemed distributions of its ordinary taxable
income and any capital gain net income prior to the end of each calendar
year to avoid liability for this excise tax.

17

<PAGE>

     If for any taxable year a Fund does not qualify for tax treatment as a
regulated investment company, all of that Fund's taxable income will be
subject to tax at regular corporate rates without any deduction for
distributions to Fund shareholders. In such event, dividend distributions
to shareholders would be taxable as ordinary income to the extent of that
Fund's earnings and profits, and would be eligible for the dividends
received deduction in the case of corporate shareholders.
     Each Fund will be required in certain cases to withhold and remit to
the U.S. Treasury 31% of taxable dividends or 31% of gross proceeds
realized upon sale paid to its shareholders who have failed to provide a
correct tax identification number in the manner required, or who are
subject to withholding by the Internal Revenue Service for failure properly
to include on their return payments of taxable interest or dividends, or
who have failed to certify to a Fund that they are not subject to backup
withholding when required to do so or that they are "exempt recipients."

     Although each Fund expects to qualify each year as a "regulated 
investment
company" and to be relieved of all or substantially all federal income tax,
depending upon the extent of its activities in states and localities in
which its offices are maintained, in which its agents or independent
contractors are located or in which it is otherwise deemed to be conducting
business, a Fund may be subject to the tax laws of such states or
localities. In addition, in those states and localities which have income
tax laws, the treatment of the Fund and its shareholders under such laws
may differ from the treatment under federal income tax laws. Shareholders
are advised to consult their tax advisors concerning the application of
state and local taxes.

DIVIDENDS

Each Fund's net investment income for dividend purposes consists of
(i) interest accrued and original issue discount earned on that Fund's
assets, (ii) plus the amortization of market discount and minus the
amortization of market premium on such assets, and (iii) less accrued
expenses directly attributable to that Fund and the general expenses (E.G.,
legal, accounting and trustees' fees) of the Trust prorated to such Fund on
the basis of its relative net assets. Any realized short-term capital gains
may also be distributed as dividends to Fund shareholders. In addition, a
Fund's Class B and Class C shares bear exclusively the expense of fees paid
to Service Organizations with respect to the relevant Class of shares. See
"Management of the Funds--Service Organizations."

     The Trust uses its best efforts to maintain the net asset value per
share of each Fund at $1.00. As a result of a significant expense or
realized or unrealized loss incurred by a Fund, it is possible that a
Fund's net asset value per share may fall below $1.00.

ADDITIONAL YIELD INFORMATION

The "yields" and "effective yields" are calculated separately for each
class of shares of each Fund. The seven-day yield for each class or
sub-class of shares in a Fund is calculated by determining the net change
in the value of a hypothetical preexisting account in a Fund having a
balance of one share of the Class involved at the beginning of the period,
dividing the net change by the value of the account at the beginning of the
period to obtain the base period return, and multiplying the base period
return by 365/7. The net change in the value of an account in a Fund
includes the value of additional shares purchased with dividends from the
original share and dividends declared on the original share and any such
additional shares, net of all fees charged to all shareholder accounts in
proportion to the length of the base period and the Fund's average account
size, but does not include gains and losses or unrealized appreciation and
depreciation. In addition, the effective annualized yield may be computed
on a compounded basis (calculated as described above) by adding 1 to the
base period return, raising the sum to a power equal to 365/7, and
subtracting 1 from the result. Similarly, based on the calculations
described above, 30-day (or one-month) yields and effective yields may also
be calculated.

18

<PAGE>

    For the 7-day period ended January 31, 1994 the yields for Class A, B and 
C
shares of the Prime Value Money Market Fund, were 3.19%, 2.94% and 2.84%, 
respectively and the effective yields were 3.24%, 2.98% and 2.88%, 
respectively. For the same period, the yields for Class A, B, and C shares of 
the Prime Money Market Fund, were 3.14%, 2.89% and 2.79%, respectively and the
effective yields were 3.19%, 2.93% and 2.83%, respectively. Without such fee 
waivers or expense reimbursements the 7-day yields and effective yields for 
Class A, B and C shares of the Prime Value Money Market Fund would have been 
3.06% and 3.10%, 2.81% and 2.85%, and 2.71% and 2.74%, respectively. The 
yields and effective yields for Class A, B and C shares of the Prime Money 
Market Fund would have been 3.01% and 3.05%, 2.76% and 2.80%, and 2.66% and 
2.69%, respectively.

    For the 30-day period ended January 31, 1994, the yields for Class A, B 
and C shares of the Prime Value Money Market Fund, were 3.22%, 2.97% and 
2.87%,
respectively and the effective yields were____%, ____% and____%, respectively. 
For the same period, the yields for Class A, B and C shares of the Prime Money 
Market Fund were 3.17%, 2.92% and 2.82%, respectively and the effective yields 
were____%, ____% and____%, respectively. Without such fee waivers or expense 
reimbursements the 30-day yields for Class A, B and C shares of the Prime 
Value
Money Market Fund would have been 3.09%, 2.84% and 2.74% respectively, and the 
effective yields would have been____%, ____% and____%, respectively. The 
yields
for Class A, B and C shares of the Prime Money Market Fund would have been 
3.04%, 2.79% and 2.69%, respectively, and the effective yields would have 
been____%, ____% and____%, respectively.

    Class B and Class C Shares bear the expenses of fees paid to Service 
Organizations. As a result, at any given time, the net yield of Class B and 
Class C Shares could be up to .25% and .35% lower than the net yield of 
Class A Shares, respectively.

     From time to time, in advertisements or in reports to shareholders, a
Fund's yield may be quoted and compared to that of other money market funds
or accounts with similar investment objectives and to stock or other
relevant indices. For example, the yield of the Fund may be compared to the
IBC/Donoghue's MONEY FUND AVERAGE, which is an average compiled by
IBC/Donoghue's MONEY FUND REPORT-R- of Holliston, MA 01746, a widely
recognized independent publication that monitors the performance of money
market funds, or to the average yields reported by the BANK RATE MONITOR
from money market deposit accounts offered by the 50 leading banks and
thrift institutions in the top five standard metropolitan statistical
areas.

     Yield will fluctuate, and any quotation of yield should not be
considered as representative of the future performance of the Fund. Since
yields fluctuate, yield data cannot necessarily be used to compare an
investment in a Fund's shares with bank deposits, savings accounts and
similar investment alternatives which often provide an agreed or guaranteed
fixed yield for a stated period of time. Shareholders should remember that
performance and yield are generally functions of the kind and quality of
the investments held in a portfolio, portfolio maturity, operating expenses
and market conditions. Any fees charged by banks with respect to Customer
accounts investing in shares of a Fund will not be included in yield
calculations; such fees, if charged, would reduce the actual yield from
that quoted.

ADDITIONAL DESCRIPTION CONCERNING FUND SHARES

The Trust does not presently intend to hold annual meetings of shareholders
except as required by the 1940 Act or other applicable law. The law under
certain circumstances provides shareholders with the right to call for a
meeting of shareholders to consider the removal of one or more trustees. To
the extent required by law, the Trust will assist in shareholder
communication in such matters.

     As stated in the Funds' Prospectuses, holders of shares in a Fund in
the Trust will vote in the aggregate and not by class or sub-class on all
matters, except where otherwise required by law and except that only a
Fund's Class B and Class C shares, as the case may be, will be entitled to
vote on matters submitted to a vote of shareholders pertaining to that
Fund's arrangements with Service Organizations with respect to the relevant
Class of shares. (See "Management of the Funds --

19

<PAGE>

Service Organizations.") Further, shareholders of each of the Trust's 
portfolios
will vote in the aggregate and not by portfolio except as otherwise required 
by
law or when the Board of Trustees determines that the matter to be voted upon
affects only the interests of the shareholders of a particular portfolio. Rule
18f-2 under the 1940 Act provides that any matter required to be submitted
by the provisions of such Act or applicable state law, or otherwise, to the
holders of the outstanding securities of an investment company such as the
Trust shall not be deemed to have been effectively acted upon unless
approved by the holders of a majority of the outstanding shares of each
portfolio affected by the matter. Rule 18f-2 further provides that a
portfolio shall be deemed to be affected by a matter unless it is clear
that the interests of each portfolio in the matter are identical or that
the matter does not affect any interest of the portfolio. Under the Rule,
the approval of an investment advisory agreement or any change in a
fundamental investment policy would be effectively acted upon with respect
to a portfolio only if approved by the holders of a majority of the
outstanding voting securities of such portfolio. However, the Rule also
provides that the ratification of the selection of independent accountants,
the approval of principal underwriting contracts and the election of
trustees are not subject to the separate voting requirements and may be
effectively acted upon by shareholders of the investment company voting
without regard to portfolio.


COUNSEL

Willkie Farr & Gallagher, 153 East 53rd Street, New York, New York 10022,
serves as counsel to the Trust and will pass upon the legality of the
shares offered hereby. Willkie Farr & Gallagher also acts as counsel to
Lehman Brothers.

AUDITORS

Ernst & Young, independent auditors, serve as auditors to each Fund and render
an opinion on the Fund's financial statements. Ernst & Young has offices at 
200
Clarendon Street, Boston, Massachusetts 02116-5072.

FINANCIAL STATEMENTS

    The Trust's Annual Report for the fiscal period ended January 31, 1994 is 
incorporated into this Statement of Additional Information by reference in its 
entirety.

MISCELLANEOUS

SHAREHOLDER VOTE

As used in this Statement of Additional Information and the Funds'
Prospectuses, a "majority of the outstanding shares" of a Fund or of 
any other portfolio means the lesser of (1) 67% of that Fund's shares
(irrespective of class) or of the portfolio represented at a meeting at
which the holders of more than 50% of the outstanding shares of that Fund
or portfolio are present in person or by proxy, or (2) more than 50% of the
outstanding shares of a Fund (irrespective of class) or of the portfolio.

SHAREHOLDER AND TRUSTEE LIABILITY

The Trust is organized as a trust under the laws of the Commonwealth of
Massachusetts. Shareholders of such a trust may, under certain
circumstances, be held personally liable (as if they were partners) for the
obligations of the trust. The Declaration of Trust of the Trust provides
that shareholders shall not be subject to any personal liability for the
acts or obligations of the Trust and that every note, bond, contract, order
or other undertaking made by the Trust shall contain a 

20

<PAGE>

provision to the effect that the shareholders are not personally liable
thereunder. The Declaration of Trust provides for indemnification out of the
trust property of a Fund of any shareholder of the Fund held personally liable
solely by reason of being or having been a shareholder and not because of any
acts or omissions or some other reason. The Declaration of Trust also provides
that the Trust shall, upon request, assume the defense of any claim made 
against
any shareholder for any act or obligation of the Trust and satisfy any
judgment thereon. Thus, the risk of a shareholder incurring financial loss
beyond the amount invested in a Fund on account of shareholder liability is
limited to circumstances in which the Fund itself would be unable to meet
its obligations.

     The Trust's Declaration of Trust provides further that no trustee of
the Trust shall be personally liable for or on account of any contract,
debt, tort, claim, damage, judgment or decree arising out of or connected
with the administration or preservation of the trust estate or the conduct
of any business of the Trust, nor shall any trustee be personally liable to
any person for any action or failure to act except by reason of bad faith,
willful misfeasance, gross negligence in performing duties, or by reason of
reckless disregard for the obligations and duties as trustee. It also
provides that all persons having any claim against the trustees or the
Trust shall look solely to the trust property for payment. With the
exceptions stated, the Declaration of Trust provides that a trustee is
entitled to be indemnified against all liabilities and expenses reasonably
incurred in connection with the defense or disposition of any proceeding in
which the trustee may be involved or may be threatened with by reason of
being or having been a trustee, and that the trustees have the power, but
not the duty, to indemnify officers and employees of the Trust unless such
persons would not be entitled to indemnification if they were in the
position of trustee.

21

<PAGE>

                                                                   APPENDIX
                                                                           
DESCRIPTION OF RATINGS

COMMERCIAL PAPER AND BANK MONEY MARKET INSTRUMENTS

 S&P.  Commercial paper with the greatest capacity for timely payment is
rated A by Standard & Poor's Corporation ("S&P"). Issues within this
category are further redefined with designations 1, 2 and 3 to indicate the
relative degree of safety; A-1, the highest of the three, indicates the
degree of safety is either overwhelming or very strong; A-2 indicates that
capacity for timely repayment is strong.

 MOODY'S.  Moody's Investors Service, Inc. ("Moody's") employs the
designations of Prime-1, Prime-2 and Prime-3 to indicate the relative
capacity of the rated issuers to repay punctually. Prime-1 issues have a
superior capacity for repayment. Prime-2 issues have a strong capacity for
repayment, but to a lesser degree than Prime-1.

 IBCA.  Commercial paper rated A.1+ by IBCA Limited or its affiliate IBCA
Inc. (together, "IBCA") are obligations supported by the highest capacity
for timely repayment. Commercial paper rated A.1 has a very strong capacity
for timely repayment. Commercial paper rated A.2 has a strong capacity for
timely repayment, although such capacity may be susceptible to adverse
changes in business, economic or financial conditions.

 FITCH.  Fitch Investors Services, Inc. ("Fitch") employs the rating F1+
to indicate issues regarded as having the strongest degree of assurance for
timely payment. The rating F-1 reflects an assurance of timely payment only
slightly less in degree than issues rated F1+, while the rating F-2
indicates a satisfactory degree of assurance for timely payment, although
the margin of safety is not as great as indicated by the F1+ and F-1
categories.

 DUFF & PHELPS.  Duff & Phelps, Inc. ("Duff & Phelps") employs the
designation of Duff 1 with respect to top grade commercial paper and bank
money-market instruments. Duff 1+ indicates the highest certainty of timely
payment: short-term liquidity is clearly outstanding, and safety is just
below risk-free U.S. Treasury short-term obligations. Duff 1- indicates
high certainty of timely payment. Duff 2 indicates good certainty of timely
payment: liquidity factors and company fundamentals are sound.

 THOMSON BANKWATCH.  The TBW Short-Term Ratings apply to commercial paper,
other senior short-term obligations and deposit obligations of the entities
to which the rating has been assigned.

     The TBW Short-Term Ratings apply only to unsecured instruments that
have a maturity of one year or less.

     The TBW Short-Term Ratings specifically assess the likelihood of an
untimely payment of principal or interest.

     
 TBW-1  The highest category indicates a very high degree of
        likelihood that principal and interest will be paid on
        a timely basis.
 TBW-2  The second highest category; while the degree of
        safety regarding timely repayment of principal and
        interest is strong, the relative degree of safety is
        not as high as for issues rated "TBW-1."
 TBW-3  The lowest investment grade category; indicates that
        while more susceptible to adverse developments (both
        internal and external) than obligations with higher
        ratings, capacity to service principal and interest in
        a timely fashion is considered adequate.
 TBW-4  The lowest rating category; this rating is regarded as
        non-investment grade and therefore speculative.

22

<PAGE>

     NOTE: VARIOUS NRSROS UTILIZE RANKINGS WITHIN RATING CATEGORIES
INDICATED BY A + OR -. THE FUNDS, IN ACCORDANCE WITH INDUSTRY PRACTICE,
RECOGNIZE SUCH RANKINGS WITHIN CATEGORIES AS GRADATIONS, VIEWING THE
EXAMPLE S&P'S RATINGS OF A1+ AND A-1 AS BEING IN S&P'S HIGHEST RATING
CATEGORY.

CORPORATE BONDS

S&P.  Bonds rated AAA have the highest rating assigned by S&P to a debt
obligation. Capacity to pay interest and repay principal is extremely
strong. Bonds rated AA have a strong capacity to pay interest and repay
principal and differ from the highest rated issues only in a small degree.

 MOODY'S.  Bonds rated Aaa by Moody's are judged to be of the best quality.
Interest payments are protected by a large or by an exceptionally stable
margin and principal is secure. Bonds rated Aa are judged to be of high
quality by all standards. They are rated lower than the best bonds because
the margins of protection may not be as large or fluctuation of protective
elements may be of greater amplitude or there may be other elements present
which make the long-term risks appear somewhat larger than in Aaa
securities. Moody's applies numerical modifiers 1, 2 and 3 in each generic
rating classification from Aa through B in its corporate bond rating
system. The modifier 1 indicates that the security ranks in the higher end
of its generic rating category; the modifier 2 indicates a mid-range
ranking; and the modifier 3 indicates that the issue ranks in the lower end
of its generic rating category.

 IBCA.  Bonds rated AAA by IBCA are obligations for which there is the
lowest expectation of investment risk. Capacity for timely repayment of
principal and interest is substantial such that adverse changes in
business,  economic or financial conditions are unlikely to increase
investment risk significantly. Bonds rated AA are obligations for which
there is a very low expectation of investment risk. Capacity for timely
repayment of principal and interest is substantial. Adverse changes in
business, economic or financial conditions may increase investment risk,
albeit not very significantly.

 FITCH.  Bonds rated AAA by Fitch are considered to be investment grade and
of the highest quality. The obligor has an exceptionally strong ability to
pay interest and repay principal, which is unlikely to be affected by
reasonably foreseeable events. Bonds rated AA are considered to be
investment grade and of very high credit quality. The obligor's ability to
pay interest and repay principal is very strong, although not quite as
strong as bonds rated AAA.

 DUFF & PHELPS.  Bonds rated AAA by Duff & Phelps are deemed to be of the
highest credit quality: the risk factors are negligible, being only
slightly more than for risk-free U.S. Treasury debt. AA indicates high
credit quality: protection factors are strong, and risk is modest but may
vary slightly from time to time because of economic conditions.

23 






LEHMAN BROTHERS INSTITUTIONAL FUNDS GROUP TRUST
FORM N-1A

PART C. 	OTHER INFORMATION

Item 24.	Financial Statements and Exhibits

	(a)	Financial Statements

(1)	Included in Part A:

	Portfolio of Investments, January 31, 1994

	Statements of Assets and Liabilities, January 31, 1994

	Statements of Operations, for the period ended
	January 31, 1994

	Statements of Changes in Net Assets, for the period ended January 
31, 1994

	Financial Highlights for a Share outstanding throughout the period

	Notes to Financial Statements

	Report of Independent Auditors

	Tax Information, for the year ended January 31, 1994 (unaudited)

(2)	Included in Part B:  Financial Statements for the fiscal year 
ended January 31, 1994 for the Prime Money Market Fund, Prime Value 
Money Market Fund, Government Obligations Money Market Fund, 100% 
Government Obligations Money Market Fund, Treasury Instruments Money 
Market Fund, Treasury Instruments Money Market Fund II, 100% Treasury 
Instruments Money Market Fund, Tax-Free Money Market Fund, Municipal 
Money Market Fund and California Municipal Money Market Fund is filed 
herein.

	Financial Statements for the six-months ended July 31, 1993 for 
the Prime Money Market Fund, Prime Value Money Market Fund, Government 
Obligations Money Market Fund, 100% Government Obligations Money Market 
Fund, Treasury Instruments Money Market Fund, Treasury Instruments Money 
Market Fund II, 100% Treasury Instruments Money Market Fund, Municipal 
Money Market Fund, Tax-Free Money Market Fund and California Municipal 
Money Market Fund are incorporated herein by reference to Post-Effective 
Amendment No. 2 to the Registrant's Registration Statement on Form N-1A 
filed with the Commission on August 30, 1993.

	(b)	Exhibits:

(1)	(a)	Declaration of Trust of Registrant dated 	November 16, 1992 
is incorporated herein by 	reference to Exhibit (1) to the 
Registrant's 	Initial Registration Statement on Form N-1A 	filed 
with the Securities and Exchange 	Commission on December 28, 1992.


	(b)	Amendment No. 1 to Declaration of Trust of 	Registrant 
is incorporated herein by 	reference to Exhibit (1)(b) to Pre-
Effective 	Amendment No. 3 to the Registrant's 	Registration 
Statement on Form N-1A filed with 	the Commission on January 19, 1993.

	(c)	Designation and Establishment of Series is 	incorporated 
herein by reference to Exhibit 	(1)(c) to Pre-Effective Amendment 
No. 5 to the 	Registrant's Registration Statement on Form 	N-1A 
filed with the Commission on February 5, 	1993.

			(d)	Form of Certificate pertaining to Classification 
		of Shares dated February 18, 1994 is 			
	incorporated herein by reference to Exhibit 			(1)(d) 
to Post-Effective Amendment No. 4 to the 		Registrant's 
Registration Statement on Form 
				N-1A filed with the Commission on February 18, 	
		1994.

(2)	(a)	By-Laws of Registrant dated November 16, 1992 	are 
incorporated herein by reference to Exhibit 	(2) to the Registrant's 
Initial Registration 	Statement on Form N-1A filed with the Securities 
	and Exchange Commission on December 28, 1992.
	
	(b)	Amended By-Laws of Registrant are incorporated 	herein by 
reference to Exhibit (2)(b) to Pre-	Effective Amendment No. 3 to the 
Registrant's 	Registration Statement on Form N-1A filed with 	the 
Commission on January 19, 1993.

	(c)	Amended and Restated By-Laws of Registrant are 	incorporated 
herein by reference to Exhibit 	(2)(c) to Pre-Effective Amendment 
No. 5 to the 	Registrant's Registration Statement on Form N-1A 
	filed with the Commission on February 5, 1993.

(3)		Not Applicable

(4)		Specimen Share Certificate is incorporated 	herein by 
reference to Exhibit (4) to Pre-	Effective Amendment No. 5 to the 
Registrant's 	Registration Statement on Form N-1A filed with 	the 
Commission on February 5, 1993.

(5)	(a)	Investment Advisory Agreement between Registrant 	and 
Lehman Brothers Global Asset Management Inc. 	("LBGAM"), relating to 
each investment portfolio 	(collectively, the "Funds") of Registrant 
is 	incorporated herein by reference to Exhibit 	(5)(a) to Post-
Effective Amendment No. 1 to the 	Registrant's Registration Statement 
on Form N-1A 	filed with the Commission on June 21, 1993.








	(b)	Investment Advisory Agreement between 	Registrant and 
Lehman Brothers Global Asset 	Management Inc. ("LBGAM"), relating to the 
	Floating Rate U.S. Government Fund is 	incorporated herein by 
reference to Exhibit 	(5)(b) to Post-Effective Amendment No. 4 to the 
	Registrant's Registration Statement on Form N-1A 	filed with 
the Commission on February 18, 1994.*

	(c)	Investment Advisory Agreement between 	Registrant and 
Lehman Brothers Global Asset 	Management Inc. ("LBGAM"), relating to the 
	Short Duration U.S. Government Fund is 	incorporated herein by 
reference to Exhibit 	(5)(c) to Post-Effective Amendment No. 4 to the 
	Registrant's Registration Statement on Form N-1A 	filed with 
the Commission on February 18, 1994.

	(d)	Sub-Investment Advisory Agreement between 	Registrant 
and Shearson Lehman Advisors 	("Shearson"), relating to each investment 
	portfolio (collectively, the "Funds") of 	Registrant is 
incorporated herein by reference 		to Exhibit (5)(b) to Post-
Effective Amendment 	No. 1 to the Registrant's Registration Statement 
	on Form N-1A filed with the Commission on June 	21, 1993.

(6)	(a)	Distribution Agreement between Registrant and 	Lehman 
Brothers, a division of Shearson Lehman 	Brothers Inc. is incorporated 
herein by 	reference to Exhibit (6)(a) to Post-Effective 	Amendment 
No. 1 to the Registrant's Registration 	Statement on Form N-1A filed 
with the Commission 	on June 21, 1993.

	(b)	Distribution Agreement between Registrant and 	Funds 
Distributor Inc. is incorporated herein by 	reference to Exhibit 
(6)(b) to Post-Effective 	Amendment No. 1 to the Registrant's 
Registration 	Statement on Form N-1A filed with the Commission 
	on June 21, 1993.

(7)		Not Applicable.

(8)	(a)	Custody Agreement between Registrant and Boston 	Safe 
Deposit and Trust Company is incorporated 	herein by reference to 
Exhibit (8) to Post-	Effective Amendment No. 1 to the Registrant's 
	Registration Statement on Form N-1A filed with 	the Commission on 
June 21, 1993.

			(b)	Custody Agreement dated November 10, 1993 	
		between Registrant and Boston Safe Deposit 		
	and Trust Company will be filed by Amendment.






*The Floating Rate U.S. Government Fund changed its name from U.S 
Government Floating Rate Fund.

(9)	(a)	Administration Agreement between Registrant and 	The 
Boston Company Advisors, Inc. is 	incorporated herein by reference to 
Exhibit 	(9)(a) to Post-Effective Amendment No. 1 to the 
	Registrant's Registration Statement on Form N-1A 	filed with 
the Commission on June 21, 1993.

	(b)	Assignment of Administration Agreement dated 	April 21, 
1994 between Registrant and The Boston 	Company Advisors, Inc. to The 
Shareholder 	Services Group, Inc. is filed herein.

	(c)	Form of Transfer Agency Agreement and Registrar 
	Agreement dated February 1, 1993 between 	Registrant and The 
Shareholder Services Group, 	Inc. is incorporated herein by reference 
to 	Exhibit (9)(b) to Pre-Effective Amendment No. 5 	to the 
Registrant's Registration Statement on 	Form N-1A filed with the 
Commission on February 	5, 1993.

	(d)	Transfer Agency and Registrar Agreement dated 	November 10, 
1993 between Registrant and The 	Shareholder Services Group, Inc. 
will be filed 	by Amendment.

(10)	(a)	Opinion and Consent of Counsel is incorporated 	herein by 
reference to Exhibit (10)(a) to Pre-	Effective Amendment No. 5 to 
the Registrant's 	Registration Statement on Form N-1A filed with the 
	Commission on February 5, 1993.

	(b)	Opinion and Consent of Massachusetts Counsel is 
	incorporated herein by reference to Exhibit (10)(b) 	to Pre-
Effective Amendment No. 5 to the 	Registrant's Registration Statement 
on Form N-1A 	filed with the Commission on February 5, 1993.

			(c)	Opinion of Massachusetts Counsel is incorporated 
		herein by reference to Exhibit (10)(c) to Post-		
	Effective Amendment No. 4 to the Registrant's 		
	Registration Statement on Form N-1A filed with the 	
	Commission on February 18, 1994.

(11)	(a)	Consent of Independent Accountants is 	incorporated 
herein by reference to Exhibit 	(11) to Pre-Effective Amendment No. 
5 to the 	Registrant's Registration Statement on Form N-1A 	filed 
with the Commission on February 5, 1993.

				(b)	Consent of Independent Accountants is 
filed herein.

				(c)	Power of Attorney is incorporated herein 
by 			reference to Exhibit (11)(b) to Post-Effective 		
	Amendment No. 3 to the Registrant's Registration 	
	Statement on Form N-1A filed with the Commission on 	
	December 21, 1993.

				(d)	Consent of Counsel is filed herein.

(12)		Not Applicable.



(13)	(a)	Purchase Agreement between Registrant and 	Shearson 
Lehman Brothers Inc. is incorporated 	herein by reference to Exhibit 
(13) to Post-	Effective Amendment No. 1 to the Registrant's 
	Registration Statement on Form N-1A filed with the 	Commission 
on June 21, 1993.

	(b)	Purchase Agreement dated March 2, 1994 between 	Registrant 
and Lehman Brothers Inc., relating to 	the Floating Rate U.S. 
Government Fund is filed 	herein.

	(c)	Purchase Agreement dated March 2, 1994 between 	Registrant 
and Lehman Brothers, Inc., relating to 	the Short Duration U.S. 
Government Fund is filed 	herein.

(14)		Not Applicable.

(15)	(a)	Form of Shareholder Services Plan pursuant to 	Rule 12b-1 
is incorporated herein by reference to 	Exhibit (15)(a) to Pre-
Effective Amendment No. 5 to 	the Registrant's Registration Statement on 
Form N-	1A filed with the Commission on February 5, 1993.

	(b)	Form of Shareholder Services Plan pursuant to 	Rule 12b-1 
for Class D Shares is incorporated 	herein by reference to Exhibit 
(15)(b) to Post-	Effective Amendment No. 1 to the Registrant's 
	Registration Statement on Form N-1A filed with the 	Commission 
on June 21, 1993.

	(c)	Form of Shareholder Servicing Agreement for 	Class B 
Shares is incorporated herein by reference 	to Exhibit (15)(b) to 
Pre-Effective Amendment No. 5 	to the Registrant's Registration 
Statement on Form 	N-1A filed with the Commission on February 5, 
1993.

	(d)	Form of Shareholder Servicing Agreement for 	Class C 
Shares is incorporated herein by 	reference 	to Exhibit (15)(c) to 
Pre-Effective Amendment No. 5 	to the Registrant's Registration 
Statement on Form 	N-1A filed with the Commission on February 5, 
1993.

	(e)	Form of Shareholder Servicing Agreement for 	Class D 
Shares is incorporated herein by reference 	to Exhibit (15)(e) to 
Post-Effective Amendment No. 	1 to the Registrant's Registration 
Statement on 	Form N-1A filed with the Commission on June 21, 
	1993.

	(f)	Form of Plan of Distribution for Class A Shares, 	Class 
B Shares and Class C Shares for the Floating 	Rate U.S. Government 
Fund is incorporated 	herein by reference to Exhibit (15)(f) to Post-
	Effective Amendment No.3 to the Registrant's 	Registration 
Statement on Form N-1A filed with the 	Commission on December 21, 
1993.*


	*As of March 1994, Class A Shares are referred to as "Premier 
	Shares", Class B Shares are referred to as "Select Shares" and 
Class 	C Shares are referred to as "Retail Shares."

	(g)	Form of Plan of Distribution for Class A Shares, 	Class 
B Shares and Class C Shares for the Short 	Duration U.S. Government 
Fund is incorporated 	herein by reference to Exhibit (15)(g) to Post-
	Effective Amendment No.3 to the Registrant's 	Registration 
Statement on Form N-1A filed with the 	Commission on December 21, 
1993.*

			(h)	Form of Shareholder Servicing Agreement for 
Class B 		Shares of the non-money market portfolios is 		
	incorporated herein by reference to Exhibit (15)(h) 		to 
Post-Effective Amendment No. 4 to the 				Registrant's 
Registration Statement on Form N-1A 		filed with the 
Commission on February 18, 1994.

(16)	(a)	Not Applicable.


Item 25.	Persons Controlled by or under Common Control with 		
		Registrant
	
	Registrant is controlled by its Board of Trustees.





































	*As of March 1994, Class A Shares are referred to as "Premier 
	Shares", Class B Shares are referred to as "Select Shares" and 
	Class C Shares are referred to as "Retail Shares."



Item 26.	Number of Holders of Securities

	The following information is as of May 13, 1994:




Title of 
Class
Number of 
Record 
Holders 
(Class A 
Shares)    
Number of 
Record 
Holders 
(Class B 
Shares)    
Number of 
Record 
Holders 
(Class C 
Shares)    
Number of 
Record 
Holders 
(Class D 
Shares)    







Prime Money 
Market Fund
   231
   7
    1
   0


Prime Value 
Money Market 
Fund

  143

  4

   1

   0


Government 
Obligations 
Money Market 
Fund

  31

  3

   1

   0


100% 
Government 
Obligations 
Money Market 
Fund

  4

  2

   1

   0


Treasury 
Instruments 
Money Market 
Fund

   2

  1

   1

   0


Treasury 
Instruments 
II Money 
Market Fund

  38

  18

   1

   0


100% Treasury 
Instruments 
Money Market 
Fund

  10

  2

   1

   0


Tax-Free 
Money Market 
Fund

  15

  2

   1

   0


Municipal 
Money Market 
Fund

  49

  2

   1

   0


California 
Municipal 
Money Market 
Fund

   8

  2

   1

   0




Item 27.	Indemnification

	Under Section 4.3 of Registrant's Declaration of Trust, as 
amended, any past or present Trustee or officer of Registrant (including 
persons who serve at Registrant's request as directors, officers or 
trustees of another organization in which Registrant has any interest as 
a shareholder, creditor or otherwise [hereinafter referred to as a 
"Covered Person"]) is indemnified to the fullest extent permitted by law 
against liability and all expenses reasonably incurred by him in 
connection with any action, suit or proceeding to which he may be a 
party or otherwise involved by reason of his being or having been a 
Covered Person.  This provision does not authorize indemnification when 
it is determined, in the manner specified in the Declaration of Trust, 
that such Covered Person has not acted in good faith in the reasonable 
belief that his actions were in or not opposed to the best interests of 
Registrant.  Moreover, this provision does not authorize indemnification 
when it is determined, in the manner specified in the Declaration of 
Trust, that such Covered Person would otherwise be liable to Registrant 
or its shareholders by reason of willful misfeasance, bad faith, gross 
negligence or reckless disregard of his duties.  Expenses may be paid to 
Registrant in advance of the final disposition of any action, suit or 
proceedings upon receipt of an undertaking by such Covered Person to 
repay such expenses to Registrant in the event that it is ultimately 
determined that indemnification of such expenses is not authorized under 
the Declaration of Trust and the Covered Person either provides security 
for such undertaking or insures Registrant against losses from such 
advances or the disinterested Trustees or independent legal counsel 
determines, in the manner specified in the Declaration of Trust, that 
there is reason to believe the Covered Person will be found to be 
entitled to indemnification.

	Insofar as indemnification for liability arising under the 
Securities Act of 1933, as amended (the "Securities Act"), may be 
permitted to Trustees, officers and controlling persons of Registrant 
pursuant to the foregoing provisions, or otherwise, Registrant has been 
advised that in the opinion of the Securities and Exchange Commission 
such indemnification is against public policy as expressed in the 
Securities Act and is, therefore, unenforceable.  In the event that a 
claim for indemnification against such liabilities (other than the 
payment by Registrant of expenses incurred or paid by a Trustee, officer 
or controlling person of Registrant in the successful defense of any 
action, suit or proceeding) is asserted by such Trustee, officer or 
controlling person in connection with the securities being registered, 
Registrant will, unless in the opinion of its counsel the matter has 
been settled by controlling precedent, submit to a court of appropriate 
jurisdiction the question whether such indemnification by it is against 
public policy as expressed in the Securities Act and will be governed by 
the final adjudication of such issue.

Item 28.	Business and Other Connections of Investment Adviser

	(a)	Investment Adviser

	Lehman Brothers Global Asset Management Inc. ("LBGAM"), which 
serves as investment adviser to the Registrant's portfolios, is a wholly 
owned subsidiary of Lehman Brothers Holdings Inc. ("Holdings").  All of 
the issued and outstanding common stock of Holdings (representing 92% of 
the voting stock) is held by American Express Company.  LBGAM is an 
investment adviser registered under the Investment Advisers Act of 1940 
(the "Advisers Act") and serves as investment counsel for individuals 
with substantial capital, executors, trustees and institutions.  It also 
serves as investment adviser, sub-investment adviser, administrator or 
sub-administrator to numerous investment companies.

	The list required by this Item 28 of officers and directors of 
LBGAM, together with information as to any other business profession, 
vocation or employment of a substantial nature engaged in by such 
officers and directors during the past two years, is incorporated by 
reference to Schedules A and D of Form ADV filed by LBGAM pursuant to 
the Advisers Act (SEC File No. 801-42006).

Item 29.	Principal Underwriters

	(a)	Lehman Brothers, acts as distributor for the shares of 
Registrant's portfolios.  Lehman Brothers currently acts as distributor 
for Lehman Brothers Funds, Inc.,The USA High Yield Fund N.V., The Latin 
American Bond Fund N.V., Mexican Short-Term Investment Portfolio N.V., 
Garzarelli Sector Analysis Portfolio N.V., The Mexican Appreciation Fund 
N.V., The Mexico Premium Income Portfolio N.V., Offshore Portfolios, 
International Currency Portfolios, Lehman Brothers Series I Mortgage-
Related Securities Portfolio N.V., TBC Enhanced Tactical Asset 
Allocation Portfolio N.V., U.S. Tactical Asset Allocation Portfolio 
N.V., Short-Term World Income Portfolio (Cayman), TBC Portfolio of 
Fixed-Income Securities, U.S. Tactical Asset Allocation Portfolio 
(Cayman), Offshore Daily Dividend Fund N.V. and the Global Advisors 
Portfolio N.V. and various series of unit investment trusts.

	(b)	Lehman Brothers is a wholly-owned subsidiary of Lehman 
Brothers Holdings Inc.  The information required by this Item 29 with 
respect to each director, officer and partner of Lehman Brothers is 
incorporated by reference to Schedule A of Form BD filed by Lehman 
Brothers pursuant to the Securities Exchange Act of 1934 (SEC File No. 
8-12324).

	(c)	Not Applicable.

Item 30.	Location of Accounts and Records

(1)	Lehman Brothers Institutional Funds Group Trust
	260 Franklin Street
	Boston, Massachusetts 02110

(2)	Lehman Brothers Global Asset Management Inc.
	American Express Tower
	World Financial Center
	New York, New York 10285

(3)	The Shareholder Services Group, Inc.
	One Exchange Place
	Boston, Massachusetts 02109

(4)	Boston Safe Deposit and Trust Company
	One Boston Place
	Boston, Massachusetts 02108

Item 31.	Management Services

		Not Applicable










Item 32.	Undertakings

		Registrant hereby undertakes as follows:

	(1)	Registrant hereby undertakes to call a meeting of its 
shareholders for the purpose of voting upon the question of removal of a 
trustee or trustees of Registrant when requested in writing to do so by 
the holders of at least 10% of Registrant's outstanding shares.  
Registrant undertakes further, in connection with the meeting, to comply 
with the provisions of Section 16(c) of the Investment Company Act of 
1940, as amended, relating to communications with the shareholders of 
certain common-law trusts.

	(2)	Registrant hereby undertakes to file a Post-Effective 
Amendment, using financial statements which may not be certified, for 
the Short Duration U. S. Government Fund and Floating Rate U.S. 
Government Fund within four to six months from the effective date of 
this Post-Effective Amendment.




Exhibit Index


Exhibit
  No.  			Exhibit		                     

(9)	(b)	Assignment of Administration Agreement 			
	dated April 21, 1994 between Registrant 				and 
The Boston Company Advisors, Inc. to 			The Shareholder 
Services Group, Inc.

(11)	(b)	Consent of Independent Accountants.

		(11)	(d)	Consent of Counsel.

(13)	(b)	Purchase Agreement dated March 2, 1994 between 	Registrant 
and Lehman Brothers Inc., relating to 	the Floating Rate U.S. 
Government Fund.

(13)	(c)	Purchase Agreement dated March 2, 1994 between 	
	Registrant and Lehman Brothers, Inc., relating to 	the Short 
Duration U.S. Government Fund.



SIGNATURES

		Pursuant to the requirements of the Securities Act of 1933, 
as amended, and the Investment Company Act of 1940, as amended, 
Registrant certifies that this Post-Effective Amendment No. 5 to the 
Registration Statement meets the requirements for effectiveness pursuant 
to Rule 485(b) of the Securities Act of 1933, as amended, and the 
Registrant has duly caused this Post-Effective Amendment No. 5 to the 
Registration Statement to be signed on its behalf by the undersigned, 
thereunto duly authorized, in the City of Boston, Commonwealth of 
Massachusetts on the 27th day of May, 1994.

							LEHMAN BROTHERS
							INSTITUTIONAL
							FUNDS GROUP TRUST

							By:  /s/  Peter Meenan
								Peter Meenan
								President

	Pursuant to the requirements of the Securities Act of 1933, this 
Post-Effective Amendment No. 5 to the Registration Statement of Lehman 
Brothers Institutional Funds Group Trust has been signed below by the 
following persons in the capacities and on the dates indicated.

Signature
Title
Date










*                                                     
Steven Spiegel
Chairman of the Board and 
Trustee
May 27, 1994









*                   
Trustee
May 27, 1994

Charles F. Barber











*                   
Trustee
May 27, 1994

Burt N. Dorsett











*                   
Trustee
May 27, 1994

Edward J. Kaier











*                   
Trustee
May 27, 1994

S. Donald Wiley











*                   
Michael C. Kardok
Treasurer (Chief Financial 
and Accounting Officer)
May 27, 1994



*By: /s/ Peter Meenan
	Peter Meenan
	Attorney-In-Fact

		ifg\newpros\edgar2\pea5.doc\1

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The Shareholder Services Group, Inc.
Exchange Place
Boston, Massachusetts 02109


Gentlemen:

	This letter acknowledges the consent of Lehman Brothers Institutional 
Funds Group Trust (the "Fund") to the assignment of the Administration 
Agreement dated February 3, 1993 between The Boston Company Advisors, Inc. 
("Boston Advisors") and the Fund, as amended (collectively, the "Agreement") 
to The Shareholder Services Group, Inc. ("TSSG").  This acknowledgment will be 
effective upon the consummation of the proposed acquisition of The Boston 
Company Inc.'s third party mutual fund administration business by TSSG (the 
"Proposed Transaction").  We understand that, effective upon the completion of 
the Proposed Transaction, TSSG will assume all of Boston Advisors' rights and 
obligations under the Agreement accruing after that date and that The Boston 
Company, Inc. and its affiliates, including Boston Advisors, will no longer be 
liable under the Agreement or responsible for any acts or omissions of TSSG 
occurring after that time.

					Sincerely,

					Lehman Brothers Institutional Funds Group Trust



					By: /s/ Patricia L. Bickimer
					Name:  Patricia L. Bickimer
					Title:  Secretary


					Date:  April 21, 1994

shared/domestic/users/cap/lbconsent







Exhibit 11 (d)





CONSENT OF COUNSEL


	We hereby consent to the use of our name and to the reference to our 
Firm under the caption "Counsel" in the Statement of Additional Information 
that is included in Post-Effective Amendment No. 5 to the Registration 
Statement on Form N-1A under the Securities Act of 1933, as amended, of Lehman 
Brothers Institutional Funds Group Trust.


								/s/  Willkie, Farr, & 
Gallagher
								Willkie, Farr, & Gallagher


New York, NY
May 19, 1994

















		ifg\newpros\edgar2\consent.doc







PURCHASE AGREEMENT



	Lehman Brothers Institutional Funds Group Trust (the "Trust"), a 
Massachusetts business trust, and Lehman Brothers Inc. (the "Distributor"), 
hereby agree as follows:


	1.  The Trust hereby offers the Distributor and the Distributor hereby 
purchases ten shares at $1.00 per share in such classes of the Trust's 
Floating Rate U.S. Government Fund with a par value of $.001 per share (the 
"Portfolio") as determined by Distributor.  The shares are the "initial 
shares" of the Portfolio.  The Distributor hereby acknowledges receipt of a 
purchase confirmation reflecting the purchase of ten shares, and the Trust 
hereby acknowledges receipt from the Distributor of funds in the amount of $10 
in full payment for the shares.


	2.  The Distributor represents and warrants to the Trust that the shares 
are being acquired for investment purposes and not for the purpose of 
distribution.


	3.  The Distributor agrees that if it or any direct or indirect 
transferee of the shares redeems the shares prior to the fifth anniversary of 
the date that the Trust begins its investment activities, the Distributor will 
pay to the Trust an amount equal to the number resulting from multiplying the 
Trust's total unamortized organizational expenses by a fraction, the numerator 
of which is equal to the number of shares redeemed by the Distributor or such 
transferee and the denominator of which is equal to the number of shares 
outstanding as of the date of such redemption, as long as the administrative 
position of the staff of the Securities and Exchange Commission requires such 
reimbursement.


	4.  The Trust represents that a copy of its Declaration of Trust, dated 
November 25, 1992, is on file in the Office of the Secretary of the 
Commonwealth of Massachusetts.




	5.  This Agreement has been executed on behalf of the Trust by the 
undersigned officer of the Trust in his capacity as an officer of the Trust.  
The obligations of this Agreement shall be binding only upon the assets and 
property of the Portfolio and not upon the assets and property of any other 
portfolio of the Trust and shall not be binding upon any Trustee, officer or 
shareholder of a Portfolio or the Trust individually.


	IN WITNESS WHEREOF, the parties hereto have executed this Agreement as 
of the 2nd day of March, 1994.


						LEHMAN BROTHERS INSTITUTIONAL 		
					FUNDS GROUP TRUST


Attest:


By:  /s/   Elizabeth Russell		By:  /s/   Peter Meenan
  Name:   Elizabeth Russell		  Name:   Peter Meenan
  Title:   Assistant Secretary		  Title:   President


Attest:		LEHMAN BROTHERS INC.


By:  /s/   Elizabeth Russell		By:  /s/   Peter Meenan
  Name:   Elizabeth Russell		  Name:   Peter Meenan
  Title:   Assistant Secretary		  Title:   President



















PURCHASE AGREEMENT



	Lehman Brothers Institutional Funds Group Trust (the "Trust"), a 
Massachusetts business trust, and Lehman Brothers Inc. (the "Distributor"), 
hereby agree as follows:


	1.  The Trust hereby offers the Distributor and the Distributor hereby 
purchases ten shares at $1.00 per share in such classes of the Trust's Short 
Duration U.S. Government Fund with a par value of $.001 per share (the 
"Portfolio") as determined by Distributor.  The shares are the "initial 
shares" of the Portfolio.  The Distributor hereby acknowledges receipt of a 
purchase confirmation reflecting the purchase of ten shares, and the Trust 
hereby acknowledges receipt from the Distributor of funds in the amount of $10 
in full payment for the shares.


	2.  The Distributor represents and warrants to the Trust that the shares 
are being acquired for investment purposes and not for the purpose of 
distribution.


	3.  The Distributor agrees that if it or any direct or indirect 
transferee of the shares redeems the shares prior to the fifth anniversary of 
the date that the Trust begins its investment activities, the Distributor will 
pay to the Trust an amount equal to the number resulting from multiplying the 
Trust's total unamortized organizational expenses by a fraction, the numerator 
of which is equal to the number of shares redeemed by the Distributor or such 
transferee and the denominator of which is equal to the number of shares 
outstanding as of the date of such redemption, as long as the administrative 
position of the staff of the Securities and Exchange Commission requires such 
reimbursement.


	4.  The Trust represents that a copy of its Declaration of Trust, dated 
November 25, 1992, is on file in the Office of the Secretary of the 
Commonwealth of Massachusetts.




	5.  This Agreement has been executed on behalf of the Trust by the 
undersigned officer of the Trust in his capacity as an officer of the Trust.  
The obligations of this Agreement shall be binding only upon the assets and 
property of the Portfolio and not upon the assets and property of any other 
portfolio of the Trust and shall not be binding upon any Trustee, officer or 
shareholder of a Portfolio or the Trust individually.


	IN WITNESS WHEREOF, the parties hereto have executed this Agreement as 
of the 2nd day of March, 1994.


						LEHMAN BROTHERS INSTITUTIONAL 		
					FUNDS GROUP TRUST


Attest:


By:  /s/   Elizabeth Russell		By:  /s/   Peter Meenan
  Name:   Elizabeth Russell		  Name:   Peter Meenan
  Title:   Assistant Secretary		  Title:   President


Attest:		LEHMAN BROTHERS INC.


By:  /s/   Elizabeth Russell		By:  /s/   Peter Meenan
  Name:   Elizabeth Russell		  Name:   Peter Meenan
  Title:   Assistant Secretary		  Title:   President

ifg/newpros/edgar2/purchas2.doc







PURCHASE AGREEMENT



	Lehman Brothers Institutional Funds Group Trust (the "Trust"), a 
Massachusetts business trust, and Lehman Brothers Inc. (the "Distributor"), 
hereby agree as follows:


	1.  The Trust hereby offers the Distributor and the Distributor hereby 
purchases ten shares at $1.00 per share in such classes of the Trust's 
Floating Rate U.S. Government Fund with a par value of $.001 per share (the 
"Portfolio") as determined by Distributor.  The shares are the "initial 
shares" of the Portfolio.  The Distributor hereby acknowledges receipt of a 
purchase confirmation reflecting the purchase of ten shares, and the Trust 
hereby acknowledges receipt from the Distributor of funds in the amount of $10 
in full payment for the shares.


	2.  The Distributor represents and warrants to the Trust that the shares 
are being acquired for investment purposes and not for the purpose of 
distribution.


	3.  The Distributor agrees that if it or any direct or indirect 
transferee of the shares redeems the shares prior to the fifth anniversary of 
the date that the Trust begins its investment activities, the Distributor will 
pay to the Trust an amount equal to the number resulting from multiplying the 
Trust's total unamortized organizational expenses by a fraction, the numerator 
of which is equal to the number of shares redeemed by the Distributor or such 
transferee and the denominator of which is equal to the number of shares 
outstanding as of the date of such redemption, as long as the administrative 
position of the staff of the Securities and Exchange Commission requires such 
reimbursement.


	4.  The Trust represents that a copy of its Declaration of Trust, dated 
November 25, 1992, is on file in the Office of the Secretary of the 
Commonwealth of Massachusetts.




	5.  This Agreement has been executed on behalf of the Trust by the 
undersigned officer of the Trust in his capacity as an officer of the Trust.  
The obligations of this Agreement shall be binding only upon the assets and 
property of the Portfolio and not upon the assets and property of any other 
portfolio of the Trust and shall not be binding upon any Trustee, officer or 
shareholder of a Portfolio or the Trust individually.


	IN WITNESS WHEREOF, the parties hereto have executed this Agreement as 
of the 2nd day of March, 1994.


						LEHMAN BROTHERS INSTITUTIONAL 		
					FUNDS GROUP TRUST


Attest:


By:  /s/   Elizabeth Russell		By:  /s/   Peter Meenan
  Name:   Elizabeth Russell		  Name:   Peter Meenan
  Title:   Assistant Secretary		  Title:   President


Attest:		LEHMAN BROTHERS INC.


By:  /s/   Elizabeth Russell		By:  /s/   Peter Meenan
  Name:   Elizabeth Russell		  Name:   Peter Meenan
  Title:   Assistant Secretary		  Title:   President



















PURCHASE AGREEMENT



	Lehman Brothers Institutional Funds Group Trust (the "Trust"), a 
Massachusetts business trust, and Lehman Brothers Inc. (the "Distributor"), 
hereby agree as follows:


	1.  The Trust hereby offers the Distributor and the Distributor hereby 
purchases ten shares at $1.00 per share in such classes of the Trust's Short 
Duration U.S. Government Fund with a par value of $.001 per share (the 
"Portfolio") as determined by Distributor.  The shares are the "initial 
shares" of the Portfolio.  The Distributor hereby acknowledges receipt of a 
purchase confirmation reflecting the purchase of ten shares, and the Trust 
hereby acknowledges receipt from the Distributor of funds in the amount of $10 
in full payment for the shares.


	2.  The Distributor represents and warrants to the Trust that the shares 
are being acquired for investment purposes and not for the purpose of 
distribution.


	3.  The Distributor agrees that if it or any direct or indirect 
transferee of the shares redeems the shares prior to the fifth anniversary of 
the date that the Trust begins its investment activities, the Distributor will 
pay to the Trust an amount equal to the number resulting from multiplying the 
Trust's total unamortized organizational expenses by a fraction, the numerator 
of which is equal to the number of shares redeemed by the Distributor or such 
transferee and the denominator of which is equal to the number of shares 
outstanding as of the date of such redemption, as long as the administrative 
position of the staff of the Securities and Exchange Commission requires such 
reimbursement.


	4.  The Trust represents that a copy of its Declaration of Trust, dated 
November 25, 1992, is on file in the Office of the Secretary of the 
Commonwealth of Massachusetts.




	5.  This Agreement has been executed on behalf of the Trust by the 
undersigned officer of the Trust in his capacity as an officer of the Trust.  
The obligations of this Agreement shall be binding only upon the assets and 
property of the Portfolio and not upon the assets and property of any other 
portfolio of the Trust and shall not be binding upon any Trustee, officer or 
shareholder of a Portfolio or the Trust individually.


	IN WITNESS WHEREOF, the parties hereto have executed this Agreement as 
of the 2nd day of March, 1994.


						LEHMAN BROTHERS INSTITUTIONAL 		
					FUNDS GROUP TRUST


Attest:


By:  /s/   Elizabeth Russell		By:  /s/   Peter Meenan
  Name:   Elizabeth Russell		  Name:   Peter Meenan
  Title:   Assistant Secretary		  Title:   President


Attest:		LEHMAN BROTHERS INC.


By:  /s/   Elizabeth Russell		By:  /s/   Peter Meenan
  Name:   Elizabeth Russell		  Name:   Peter Meenan
  Title:   Assistant Secretary		  Title:   President

ifg/newpros/edgar2/purchas2.doc













CONSENT OF ERNST & YOUNG, INDEPENDENT AUDITORS


We consent to the references made to our firm under the captions 
"Financial Highlights" in each Prospectus and "Independent Auditors" in 
each Statement of Additional Information, and to the incorporation by 
reference, in this Post-Effective Amendment Number 5 to Registration 
Statement Number 33-55034, dated May 31, 1994, of The Lehman Brothers 
Institutional Funds Group Trust, of our report dated March 16, 1994.


								ERNST & YOUNG
Boston, Massachusetts
May 26, 1994



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