LEHMAN BROTHERS INSTITUTIONAL FUNDS GROUP TRUST
497, 1994-07-05
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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 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." 

	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 31, 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. 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. 

___________

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

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

	


C
l
a
s
s
 
A

S
h
a
r
e
s

C
l
a
s
s
 
B

S
h
a
r
e
s

C
l
a
s
s
 
C

S
h
a
r
e
s


	Annual Fund Operating Expenses
(as a percentage of average net assets)




			Advisory Fees (net of 
applicable fee waivers)*
0
.
0
8
%

0
.
0
8
%

0
.
0
8
%


			Rule 12b-1 fees
n
o
n
e

.
2
5
%

.
3
5
%


			Other Expenses _ including 
Administration Fees
(net of applicable fee waivers)*
0
.
0
8
%

0
.
0
8
%

0
.
0
8
%


	







			Total Fund Operating 
Expenses (after fee waivers)*
.
1
6
%

.
4
1
%

.
5
1
%


	











___________

* 	The Expense Summary above has been restated to reflect 
current expected fees and the Fund's Investment Adviser's and 
Administrator's voluntary fee waiver and expense reimbursement 
arrangements in effect for the Fund's fiscal year ending 
January 31, 1995. 



	In order to maintain a competitive expense ratio during 
1994, the Fund's Investment Adviser and Administrator have 
voluntarily agreed to waive fees and reimburse expenses 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 1995 and thereafter, the Investment 
Adviser and Administrator intend to continue voluntarily to waive 
fees and reimburse expenses to the extent necessary to maintain an 
annualized expense ratio at a level no greater than .18% of 
average daily net assets. The voluntary fee waiver and expense 
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 fee waivers, the Total Fund Operating Expenses of Class A, 
Class B and Class C are expected to 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:


1
 
Y
e
a
r

3
 
Y
e
a
r
s

5
 
Y
e
a
r
s

1
0
 
Y
e
a
r
s


	Class A shares:
$
2

$
5

$
9

$
2
0


	Class B shares:
$
4

$
1
3

$
2
3

$
5
2


	Class C shares:
$
5

$
1
6

$
2
9

$
6
4



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 auditors, whose report 
thereon appears in the Trust's Annual Report dated January 31, 
1994. This information should be read in conjunction with the 
financial statements and notes thereto that also appear in the 
Trust's Annual Report, which are incorporated by reference into 
the Statement of Additional Information. 


P
e
r
i
o
d
 
E
n
d
e
d
 
1
/
3
1
/
9
4
*

C
l
a
s
s
 
A


	Net asset value, beginning of period
$
1
.
0
0


	Net investment income(1)
0
.
0
2
2
8


	Dividends from net investment income
(
0
.
0
2
2
8
)


	Net asset value, end of period
$
1
.
0
0


	Total return(2)
2
.
3
0
%


	Ratios to average net 
assets/supplemental data:


	Net assets, end of period (in 000's)
$
5
9
,
7
3
5


	Ratio of net investment income to 
average net assets(3)
2
.
3
8
%


	Ratio of net operating expenses to 
average net assets(3)(4)
0
.
1
1
%



___________

   *	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 was 1.52%.

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. 

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 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 a 
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 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 arrangements. 

	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 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 
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 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. 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. 

	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 advisers 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 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 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 
(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 the Distributor, with respect to 
dividends paid. 

	The Shareholder Services Group, Inc. ("TSSG"), as Transfer 
Agent, will send each investor or its authorized representative an 
annual statement designating the amount of any dividends and 
capital gains distributions, if any, 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 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.") 

	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. 

	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. 

	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. 

	Investors will be advised at least annually as to the 
federal income tax consequences of distributions made each year. 

	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 advisers 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 is a wholly-owned subsidiary of Lehman Brothers 
Holdings Inc. ("Holdings"). Prior to May 31, 1994, all of the 
issued and outstanding common stock (representing 92% of the 
voting stock) of Holdings was held by American Express Company. On 
May 31, 1994, American Express distributed to holders of common 
stock of American Express all outstanding shares of common stock 
of Holdings. As of May 31, 1994, Nippon Life Insurance Company 
owned 11.2% of the outstanding voting securities of Holdings. 
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 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 of approximately $15 billion as of March 31, 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 no advisory fees from the Fund. 

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 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 waive fees 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. 

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 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, 
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: 008; Class B shares code: 108; Class C shares code: 208) 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 thirteen 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 (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 (Premier and Select Shares), 
and Short Duration U.S. Government Fund (Premier and Select 
Shares). 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. 

	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 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." 

	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. 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 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


P
a
g
e


	Background and Expense Information
2
 

	Financial Highlights
3
 

	Investment Objective and Policies
3
 

	Purchase and Redemption of Shares
8
 

	Dividends
1
0
 

	Taxes
1
1
 

	Management of the Fund
1
2
 

	Yields
1
4
 

	Description of Shares
1
4
 


Tax-Free Money
Market Fund



PROSPECTUS
May 31, 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.

May 31, 1994





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