MANAGED MUNICIPAL FUND INC
497, 1995-05-18
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<PAGE> 1

                         Supplement dated May 22, 1995
                                       to
                       Prospectus dated February 28, 1995
                                       of
                       ISI MANAGED MUNICIPAL FUND SHARES
                   (A Class of Managed Municipal Fund, Inc.)



   The Prospectus dated February 28, 1995 of ISI Managed Municipal Fund Shares
(A Class of Managed Municipal Fund, Inc.) is hereby amended and supplemented by
the following:

   The Section entitled "How to Invest in the Fund - Purchases by Exchange" is
amended and supplemented as follows:

   Until February 29, 1996, shareholders of any other mutual fund who have paid
a sales charge on their shares of such funds, and shareholders of any closed-end
fund, may exchange shares of such funds for an equal dollar amount of Shares by
submitting to Armata or a Participating Dealer, the proceeds of the redemption
or sale of shares of such funds, together with evidence of the payment of a
sales charge (for mutual funds only) and the source of such proceeds. Shares
issued pursuant to this offer will not be subject to the sales charges described
above or any other charge.

<PAGE> 2


ISI MANAGED MUNICIPAL FUND SHARES 
(A Class of Managed Municipal Fund, Inc.) 
717 Fifth Avenue 
New York, NY 10022 
For information call (800) 955-7175 

   The investment objective of this mutual fund (the "Fund") is a high level 
of total return with relative stability of principal and, secondarily, high 
current income through investment in a portfolio consisting primarily of 
municipal obligations the interest on which is exempt from federal income 
tax. To achieve this objective, the Fund invests primarily in municipal 
obligations rated within the three highest rating categories of Moody's 
Investors Service, Inc. or Standard & Poor's Corporation. 


   Shares of the ISI class of the Fund ("Shares") are available through 
Armata Financial Corp., the distributor of the Shares, as well as 
Participating Dealers and Shareholder Servicing Agents. (See "How to Invest 
in the Fund.") This Prospectus sets forth basic information that investors 
should know about the Fund prior to investing and should be retained for 
future reference. A Statement of Additional Information dated February 28, 
1995, has been filed with the Securities and Exchange Commission (the "SEC") 
and is hereby incorporated by reference. It is available upon request and 
without charge by contacting the Fund at the above address or telephone 
number. 

           THE FUND'S SHARES ARE NOT DEPOSITS OR OBLIGATIONS OF, OR 
           GUARANTEED OR ENDORSED BY, ANY BANK. THE SHARES ARE NOT 
              FEDERALLY INSURED BY THE FEDERAL DEPOSIT INSURANCE 
             CORPORATION, THE FEDERAL RESERVE BOARD OR ANY OTHER 
                 GOVERNMENT AGENCY. INVESTMENT IN THE SHARES 
             INVOLVES RISK, INCLUDING 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.


               The date of this Prospectus is February 28, 1995 



<PAGE> 3

1. Fund Expenses

SHAREHOLDER TRANSACTION EXPENSES: 
 (as a percentage of offering price) 

Maximum Sales Charge Imposed on Purchases  ..............    4.45% 
Maximum Sales Charge Imposed on Reinvested Dividends  ...     None 
Deferred Sales Charge  ..................................     None 

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

Management Fees (net of fee waivers)  ...................      .26% 
12b-1 Fees  .............................................      .25% 
Other Expenses (net of fee waivers)  ....................      .39% 
                                                               --- 
Total Fund Operating Expenses (net of fee waivers)  .....      .90% 


EXAMPLE: 

<TABLE>
<CAPTION>
                                                     1 YEAR     3 YEARS     5 YEARS     10 YEARS 
                                                    --------   ---------    ---------   ---------- 
<S>                                                 <C>        <C>          <C>         <C>   <C>
You would pay the following expenses on a $1,000 
  investment, assuming (1) 5% annual return and (2) 
  redemption at the end of each time period:*         $53         $72         $93         $155 

</TABLE>


- ------ 
*Absent fee waivers, expenses for the 1, 3, 5 and 10 year periods would be 
$55, $78, $104 and $180, respectively. 


The Example should not be considered a representation of future expenses. 
Actual expenses may be greater or less than those shown. 


The purpose of the foregoing table is to describe the various costs and expenses
that an investor in the Fund will bear directly and indirectly. A person who
purchases Shares through a financial institution may be charged separate fees by
the financial institution. (For more complete descriptions of the various costs
and expenses, see "How to Invest in the Fund -- Offering Price", "Investment
Advisor", "Administrator" and "Distributor.") Absent fee waivers, Management
Fees would be .40%, Other Expenses (including administration fees) would be .46%
and Total Fund Operating Expenses would be 1.11%, respectively, of the Fund's
average net assets. The Fund's investment advisor and administrator intend, but
are not obligated, to waive their fees proportionately to the extent required so
that Total Fund Operating Expenses do not exceed .90% of the Fund's average net
assets. The Example shown in the table is based upon the Fund's expenses for the
fiscal year ended October 31, 1994 which, net of fee waivers, were .90% of its
average net assets. The rules of the SEC require that the maximum sales charge
(in the Shares' case, 4.45% of the offering price) be reflected in the above
table. However, certain investors may qualify for reduced sales charges (see
"How to Invest in the Fund -- Offering Price"). Due to the continuous nature of
Rule 12b-1 fees, long-term shareholders of the Fund may pay more than the
equivalent of the maximum front-end sales charges permitted by the Rules of Fair
Practice of the National Association of Securities Dealers, Inc.


                                      2 

<PAGE> 4
2. Financial Highlights 

The Fund was organized as a corporation under the laws of the State of 
Maryland on January 5, 1990 and commenced operations on February 26, 1990. 
The Financial Highlights included in this table are a part of the Fund's 
financial statements for the periods indicated and have been audited by 
Coopers & Lybrand L.L.P., the Fund's independent accountants. The financial 
statements for the fiscal year ended October 31, 1994 and the report thereon 
of Coopers & Lybrand L.L.P. are included in the Statement of Additional 
Information. Additional performance information is contained in the Fund's 
Annual Report for the fiscal year ended October 31, 1994, which is available 
at no cost from the Fund at the address and telephone number noted on the 
cover page of this Prospectus. 


               (For a Share outstanding throughout each period) 

<TABLE>
<CAPTION>
                                                                                             
                                                                                             February 26, 1990   
                                                                                              (commencement of    
                                                         Year Ended October 31,                  operations)   
                                             ----------------------------------------------        through 
                                               1994        1993         1992        1991       October 31, 1990 
                                             ---------   ---------    ---------   ---------   ------------------ 
<S>                                            <C>         <C>          <C>         <C>           <C>
Per Share Operating Performance:  
  Net asset value at beginning of period .    $  11.10    $  10.31     $  10.36    $   9.99         $  10.00 
Income from Investment Operations: 
 Net investment income  ..................        0.46        0.50         0.50        0.57             0.38 
 Net realized and unrealized gain/(loss) 
  on investments  ........................       (1.15)       0.94         0.22        0.49            (0.02) 
 Total from Investment Operations ........       (0.69)       1.44         0.72        1.06             0.36 
Less Distributions:  
  Dividends from net investment income and 
   short-term gains  .....................       (0.56)      (0.61)       (0.65)      (0.69)           (0.37) 
  Distributions from net realized 
   long-term gains  ......................       (0.04)      (0.04)       (0.12)        --               -- 
  Total distributions ....................       (0.60)      (0.65)       (0.77)      (0.69)           (0.37) 
  Net asset value at end of period .......    $   9.81    $  11.10     $  10.31    $  10.36         $   9.99 
Total Return:*   
  ISI Class Shares .......................       (6.49)%     14.36%        6.06%      10.85%             3.78% 
  Flag Investors Class A Shares ..........       (6.49)%     14.36%        6.06%      10.85%             1.21%** 
Ratios to Average Net Assets:  
  Expenses(2) ............................        0.90%       0.90%        0.90%       0.90%            0.90%(1) 
  Net investment income(3) ...............        4.37%       4.38%        4.78%       5.57%            6.12%(1) 
Supplemental Data:  
  Net assets at end of period (000):  
   ISI Class Shares  .....................     $83,607     $88,378      $51,420     $20,053          $17,290 
   Flag Investors Class A Shares  ........     $49,903     $53,486      $45,536     $38,491          $ 5,698 
  Portfolio turnover rate ................          37%         68%          95%         86%              99% 
</TABLE>


- ------ 

 *  Total return represents aggregate total return for the periods indicated and
    does not reflect any applicable sales charges.
**  Flag Investors Class A Shares commenced operations on October 23, 1990.
(1) Annualized. 
(2) Without the waiver of advisory and administration fees, the ratio of 
    expenses to average net assets would have been 1.11%, 1.14%, 1.27%, 1.47% 
    and 1.92% for the periods ended October 31, 1994, 1993, 1992, 1991 and 
    1990, respectively, for Flag Investors Class A and ISI Class Shares.
(3) Without the waiver of advisory and administration fees, the ratio of net
    investment income to average net assets would have been 4.16%, 4.14%, 4.41%,
    4.99% and 5.11% for the periods ended October 31, 1994, 1993, 1992, 1991 and
    1990, respectively, for Flag Investors Class A and ISI Class Shares.



                                      3 

<PAGE> 5
       


3.  Investment Program 

INVESTMENT OBJECTIVE, POLICIES AND RISK CONSIDERATIONS 

The investment objective of the Fund is a high level of total return, with 
relative stability of principal, and secondarily, high current income, 
through an investment in a portfolio consisting primarily of municipal 
obligations the interest on which is exempt from federal income tax 
("Municipal Obligations"). Municipal Obligations include securities of 
states, territories and possessions of the United States and the District of 
Columbia, and their political subdivisions, agencies and instrumentalities, 
the interest on which is exempt from federal income tax in the opinion of 
bond counsel for the issuer. Under normal market conditions, the Fund will 
invest at least 80% of its net assets in Municipal Obligations. This policy 
is fundamental and may be changed only by a majority vote of shareholders. 
The Fund does not currently intend to acquire Municipal Obligations that are 
subject to alternative minimum tax but may so invest up to 20% of its net 
assets. Any capital gains from investments in Municipal Obligations will not 
be exempt from federal income tax. (See "Dividends and Taxes--Tax Treatment 
of Dividends and Distributions.") There can be no assurance that the Fund 
will achieve its investment objective. 

The Fund will invest at least 75% of its portfolio of Municipal Obligations 
in securities rated, on the date of investment, A1 or higher (in the case of 
municipal bonds) and higher than MIG 3 (in the case of municipal notes) by 
Moody's Investors Service, Inc. ("Moody's") or rated A+ or higher (in the 
case of municipal bonds) and higher than SP-2 (in the case of municipal 
notes) by Standard & Poor's Corporation ("S&P") or, if unrated, of comparable 
quality as determined by the Fund's investment advisor under criteria 
approved by the Board of Directors. The Fund may invest up to 25% of its 
portfolio of Municipal Obligations in securities rated A (in the case of 
municipal bonds) or MIG 3 (in the case of municipal notes) by Moody's or 
rated A (in the case of municipal bonds) or SP-2 (in the case of municipal 
notes) by S&P or, if unrated, of comparable quality as determined by the 
investment advisor under criteria approved by the Board of Directors. 

Even under normal circumstances the Fund may invest to a limited extent in 
taxable obligations depending on market conditions. These obligations may 
include U.S. Government and agency, bank and corporate securities and 
repurchase agreements collateralized by such securities. For temporary 
defensive purposes, the Fund may invest without limit in short-term 
obligations of these types. The Fund may also invest in financial futures, 
"when-issued" securities, standby commitments of brokers, dealers or banks 
and variable and floating rate demand obligations. These investment 
practices, which may involve certain special risks, are described below. The 
Fund's investment objective may be changed only by the affirmative vote of a 
majority of the outstanding shares of all classes of the Fund. 


SELECTION OF INVESTMENTS 

The Fund's investment advisor is International Strategy and Investment Inc. 
("ISI" or the "Advisor"--see "Investment Advisor"). ISI buys and sells 
securities for the Fund's portfolio with a view toward, first, a high level 
of total return with relative stability of principal and, second, high 
current income that is federally tax exempt. Therefore, in addition to yield, 
the potential for capital gains and appreciation resulting from possible 
changes in interest rates will be a consideration in selecting investments. 
While income distributions to shareholders will generally be tax exempt, 
distributions of capital gains will be taxable. Accordingly, to the extent 
the Fund achieves its investment objective, a larger portion of its 
distributions will be taxable than would be the case if the Fund placed a 
greater emphasis on earning tax exempt income. (See "Investment 
Program--Taxable Investments" and "Dividends and Taxes--Tax Treatment of 
Dividends and Distributions.") ISI will be free to take full advantage of the 
entire range of maturities offered by Municipal Obligations and may adjust 
the average maturity of the Fund's portfolio from time to time, depending on 
its assessment of the relative yields available on securities of different 
maturities and its expectations of future changes in interest rates. Thus, at 
certain times the average maturity of the portfolio may be relatively short 
(under five years, for example) and at other times may be relatively long (in 
the 20-30 year range, for example). In determining which direction interest 
rates are likely to move, the Advisor relies on the economic analysis made by 
its chairman, Edward S. Hyman. There is no assurance that such economic 
analysis will accurately predict interest rate trends or that the portfolio 
strategies based on Mr. Hyman's economic analysis will be effective. 


                                      4 

<PAGE> 6

SPECIAL RISK CONSIDERATIONS 

As with other debt securities, the value of Municipal Obligations changes as 
interest rates fluctuate. Changes in the value of portfolio securities will 
not affect interest income from those securities but will be reflected in the 
Fund's net asset value. Thus, a decrease in interest rates will generally 
result in an increase in the value of the Shares. Conversely, during periods 
of rising interest rates, the value of the Shares will generally decline. The 
magnitude of these fluctuations will generally be greater at times when the 
average maturity of the Fund's portfolio securities is longer. 

PURCHASE OF WHEN-ISSUED SECURITIES 

New issues of Municipal Obligations are usually offered on a when-issued 
basis, which means that delivery and payment for such Municipal Obligations 
normally take place within 45 days after the date of the commitment to 
purchase. The payment obligation and the interest rate that will be received 
on a when-issued security are fixed at the time the purchase commitment is 
entered into, although no interest on such security accrues to the Fund prior 
to payment and delivery. A segregated account of the Fund consisting of cash, 
cash equivalents or U.S. Government securities or other high quality liquid 
debt securities equal at all times to the amount of the when-issued 
commitments will be established and maintained by the Fund at the Fund's 
custodian. Additional cash or liquid debt securities will be added to the 
account when necessary. While the Fund will purchase securities on a 
when-issued basis only with the intention of acquiring the securities, the 
Fund may sell the securities before the settlement date if it is deemed 
advisable to limit the effects of adverse market action. The securities so 
purchased or sold are subject to market fluctuation so, at the time of 
delivery of the securities, their value may be more or less than the purchase 
or sale price. The Fund will ordinarily invest no more than 40% of its net 
assets at any time in Municipal Obligations purchased on a when-issued 
basis. 

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 broker, 
dealer or bank is obligated to repurchase, at the Fund's option, specified 
securities in the Fund's portfolio at a specified price. In this respect, 
stand-by commitments are comparable to put options and thus the Fund's 
ability to enforce such obligations is subject to the risk that the seller of 
the commitment may default on its obligations. The Fund will acquire stand-by 
commitments as a means of changing the average maturity of its portfolio in 
response to expected changes in market interest rates. 

The Fund anticipates that stand-by commitments will generally be available 
from brokers, dealers and banks without the payment of any direct or indirect 
consideration, but the Fund may have to pay for stand-by commitments, thus 
increasing the cost of acquiring and holding the underlying security and 
similarly decreasing such security's yield. Gains realized in connection with 
stand-by commitments will be taxable. 

VARIABLE AND FLOATING RATE DEMAND OBLIGATIONS 

The Fund may purchase floating and variable rate demand notes and bonds, 
which are tax-exempt obligations normally having stated maturities in excess 
of one year, but which permit the holder to demand payment of principal 
either at any time or at specified intervals. The interest rates on these 
obligations fluctuate from time to time in response to changes in the market 
interest rates. Frequently, such obligations are secured by letters of credit 
or other credit support arrangements provided by banks. Where these 
obligations are not secured by letters of credit or other credit support 
arrangements, the Fund's right to redeem will be dependent on the ability of 
the borrower to pay principal and interest on demand. Each demand note and 
bond purchased by the Fund will meet the quality criteria established for the 
purchase of other Municipal Obligations. The Advisor, on behalf of the Fund, 
will consider on an ongoing basis the creditworthiness of the issuers of the 
floating and variable rate demand obligations in the Fund's portfolio. 
Because these obligations are direct lending arrangements between the lender 
and borrower, it is not contemplated that such instruments generally will be 
traded, and there generally is no established secondary market for these 
obligations, although they are redeemable at face value. The Fund will not 
invest more than 10% of its net assets in floating or variable rate demand 
obligations as to which the Fund cannot exercise the demand feature on less 
than seven days' notice if there is no secondary market available for these 
obligations. 


FUTURES CONTRACTS 

The Fund may purchase and sell U.S. exchange traded futures contracts on bond 
indices ("Futures Contracts"). At the same time a Futures Contract is purchased

                                      5 

<PAGE> 7

or sold, the Fund must allocate cash or securities as a deposit payment
("initial deposit"). The initial deposit varies but may be as low as 5% or less
of the value of the contract. Daily thereafter, the Futures Contract is valued
and the payment of "variation margin" may be required, so each day the Fund
would provide or receive cash that reflects any decline or increase in the
contract's value. A Futures Contract based on a municipal bond index provides
for a cash payment equal to the amount, if any, by which the value of the index
at maturity is above or below the value of the index at the time the contract
was entered into times a fixed index "multiplier." The index underlying such a
Futures Contract is generally a broad based index of securities designed to
reflect movements in the relevant market as a whole. The index assigns weighted
values to the securities included in the index, and its composition is changed
periodically.

These instruments will be used only to protect against anticipated future 
changes in interest rates which otherwise might either adversely affect the 
value of the Fund's portfolio securities or adversely affect the prices of 
securities which the Fund intends to purchase at a later date. Should 
interest rates move in an unexpected manner, the Fund may not achieve the 
anticipated benefits of the Futures Contract and may realize a loss on the 
Futures Contract in excess of any corresponding gain in the hedged portfolio 
positions. Futures transactions involve other risks as well. For example, a 
lack of correlation between the index and the assets being hedged, or 
unexpected adverse price movements, could render the Fund's hedging strategy 
unsuccessful and could result in losses on the Futures Contract in excess of 
any corresponding gain in the hedged portfolio positions. In addition, there 
can be no assurance that a liquid secondary market will exist for any Futures 
Contract purchased or sold, and the Fund may be required to maintain a 
position until exercise or expiration, which could result in losses on the 
Futures Contract in excess of any corresponding gain in the hedged portfolio 
positions. 

Regulations of the Commodity Futures Trading Commission (the "CFTC") require 
that the Fund enter into transactions in Futures Contracts for hedging 
purposes only, or that in the case of long positions in Futures Contracts, an 
alternative test be satisfied, in order to assure that the Fund will not be 
deemed to be a "commodity pool" as defined in CFTC regulations. In addition, 
under CFTC rules the Fund may not purchase or sell such instruments if, 
immediately thereafter, the sum of the amount of initial margin deposits on 
existing Futures Contracts would exceed 5% of the Fund's total assets. In 
addition, the Fund will not enter into Futures Contracts if obligations under 
all Futures Contracts would amount to more than 30% of its total assets. 

Gains recognized from futures transactions engaged in by the Fund are taxable 
income to shareholders. The Fund reserves the right in the future to invest 
in other types of financial futures without obtaining prior shareholder 
approval. 

REPURCHASE AGREEMENTS 

The Fund may agree to purchase U.S. Treasury Securities from financial 
institutions, such as banks and broker- dealers, subject to the seller's 
agreement to repurchase the securities at an established time and price. U.S. 
Treasury Securities include Treasury bills, Treasury notes, Treasury bonds 
and Separate Trading of Registered Interest and Principal of Securities 
("STRIPS"), all of which are direct obligations of the U.S. Government and 
are supported by the full faith and credit of the United States. The Fund 
will enter into repurchase agreements only with banks and broker-dealers that 
have been determined to be creditworthy by the Fund's Board of Directors 
under criteria established with the assistance of the Advisor. Default by the 
seller may, however, expose the Fund to possible loss because of adverse 
market action or delay in connection with the disposition of the underlying 
obligations. In addition, if bankruptcy proceedings are commenced with 
respect to the seller of the security, the Fund may be delayed or limited in 
its ability to sell the collateral. 

TAXABLE INVESTMENTS 

Although the Fund intends, to the extent feasible but subject to market 
conditions, to invest up to 100% of its assets in tax exempt Municipal 
Obligations, it may invest, from time to time, in securities, the interest on 
which is subject to federal income tax. The Fund may make such investments 
(a) pending investment of proceeds from sales of Shares or portfolio 
securities in tax-exempt securities, (b) pending settlement of purchases of 
portfolio securities, (c) to maintain liquidity for meeting anticipated 
redemptions, or (d) when in the Advisor's opinion it is advisable because of 
adverse conditions affecting the market for Municipal Obligations. The 
taxable investments in which the Fund may invest consist of U.S. Treasury 
Securities and repurchase agreements fully collateralized by U.S. Treasury 


                                      6 

<PAGE> 8

Securities (collectively, the "Taxable Investments"). The Fund may invest up to
20% of its net assets in Taxable Investments. The Fund may earn taxable income
from other sources. Dividends paid by the Fund that are attributable to interest
earned from Taxable Investments and to taxable income from other investments
will be taxable to investors. (See "Dividends and Taxes -- Tax Treatment of
Dividends and Distributions.")

SIZE OF FUND 

The Fund currently intends to limit the size of the Fund and to accept share 
purchases only from existing shareholders at such time as the assets of the 
Fund are in excess of $200 million but less than $250 million, and thereafter 
not to accept any share purchases other than dividend reinvestments. 

4. Investment Restrictions 

The Fund's investment program is subject to a number of restrictions which 
reflect both self-imposed standards and federal and state regulatory 
limitations. The investment restrictions recited below are matters of 
fundamental policy and may not be changed without the affirmative vote of a 
majority of the outstanding shares of the Fund. Accordingly, the Fund will 
not: 

1) Concentrate 25% or more of its total assets in securities of issuers in 
   any one industry (for this purpose the U.S. Government or any state or 
   local government or their agencies and instrumentalities are not 
   considered to be an industry); 

2) With respect to 75% of its total assets, invest more than 5% of its total 
   assets in the securities of any single issuer (for this purpose, the U.S. 
   Government or its agencies and instrumentalities are not considered to be 
   an issuer and, in the case of Municipal Obligations, the public or private 
   entity ultimately responsible for payment of principal and interest on the 
   security is considered to be the issuer); 

3) Borrow money except as a temporary measure for extraordinary or emergency 
   purposes and then only from banks and in an amount not exceeding 10% of 
   the value of the total assets of the Fund at the time of such borrowing, 
   provided that, while borrowings by the Fund equalling 5% or more of the 
   Fund's total assets are outstanding, the Fund will not purchase 
   securities; or 

4) Invest more than 10% of its total assets in illiquid securities, including 
   repurchase agreements with maturities of greater than seven days and 
   floating or variable rate demand obligations as to which the Fund cannot 
   exercise the demand feature on less than seven days' notice if there is no 
   secondary market available for these obligations. 

The Fund is subject to further investment restrictions that are set forth in 
the Statement of Additional Information. 

5. How To Invest in the Fund 

Shares may be purchased from Armata Financial Corp. ("Armata"), P.O. Box 515, 
Baltimore, Maryland 21203, or through any securities dealer which has entered 
into a dealer agreement with Armata ("Participating Dealers") or through any 
financial institution which has entered into a shareholder servicing 
agreement with the Fund ("Shareholder Servicing Agents"). Shares may also be 
purchased directly from the Fund by completing the Application Form attached 
to this Prospectus and returning it, together with payment of the purchase 
price, to the Fund at the address shown on the Application Form. As used 
herein the "Fund" refers to Managed Municipal Fund, Inc., whereas references 
to the "Shares" shall mean ISI Managed Municipal Fund Shares which is a class 
of shares of the Fund. 

The minimum initial investment is $5,000, except that the minimum initial 
investment for participants in the Fund's Automatic Investing Plan is $250. 
Each subsequent investment must be at least $250, except that the minimum 
subsequent investment for participants in the Fund's Automatic Investing Plan 
is $100 for monthly investments and $250 for quarterly investments. (See 
"Purchases through Automatic Investing Plan" below.) Orders for purchases of 
Shares are accepted on any day on which the New York Stock Exchange is open 
for business ("Business Day"). The Fund reserves the right to suspend the 
sale of Shares at any time at the discretion of Armata. Purchase orders for 
Shares will be executed at a per Share purchase price equal to the net asset 
value next determined after receipt of the purchase order plus any applicable 
front-end sales charge (the "Offering Price") on the date such net asset 
value is determined (the "Purchase Date"). Purchases made directly from the 
Fund must be accompanied by payment of the purchase price. Purchases made 
through Armata or a Participating Dealer or Shareholder Servicing Agent must 


                                      7 


<PAGE> 9

be in accordance with such entity's payment procedures. Armata may, in its 
sole discretion, refuse to accept any purchase order. 

The net asset value per Share is determined once daily as of the close of the 
New York Stock Exchange, which is ordinarily 4:00 p.m. (Eastern Time), on 
each Business Day. Net asset value per share of a class is calculated by 
valuing all assets held by the Fund, deducting liabilities attributable to 
all shares and any liabilities attributable to the Shares, and dividing the 
resulting amount by the number of then outstanding Shares. For this purpose, 
portfolio securities will be given their market value where feasible based on 
quotations furnished by a pricing service approved by the Board of Directors. 
Options and futures are valued at the settlement price, or if no sales are 
reported, at the average of the last reported bid and asked prices. 
Securities or other assets for which market quotations are not readily 
available are valued at their fair value as determined in good faith under 
procedures established from time to time and monitored by the Fund's Board of 
Directors. Debt obligations with maturities of 60 days or less are valued at 
amortized cost which constitutes fair value as determined by the Fund's Board 
of Directors. 


OFFERING PRICE 

Shares may be purchased from Armata, Participating Dealers or Shareholder 
Servicing Agents at the Offering Price which includes a sales charge which is 
calculated as a percentage of the Offering Price and decreases as the amount 
of purchase increases as shown below: 

<TABLE>
<CAPTION>
                                Sales Charge     Sales Charge 
                               as Percentage    as Percentage    Dealer Retention 
                                of Offering     of Net Amount    as Percentage of 
     Amount of Purchase            Price           Invested       Offering Price* 
 ---------------------------   --------------   --------------    ---------------- 
<S>                            <C>              <C>               <C>
Less than    $   50,000  ....       4.45%            4.66%            4.00% 
$50,000    - $   99,999  ....       3.50%            3.63%            3.00% 
$100,000   - $  249,999  ....       2.50%            2.56%            2.00% 
$250,000   - $  499,999  ....       2.00%            2.04%            1.50% 
$500,000   - $  999,999  ....       1.50%            1.52%            1.25% 
$1,000,000 - $1,999,999  ....       0.75%            0.76%            0.75% 
$2,000,000 - $2,999,999  ....       0.50%            0.50%            0.50% 
$3,000,000 and over  .........      None             None             None 
</TABLE>

- ------ 
* Armata may from time to time reallow to Participating Dealers up to 100% of 
  the sales charge included in the Offering Price of Shares. Dealers that 
  receive a reallowance of 100% of the sales charge may be considered 
  underwriters for purposes of the federal securities laws. 

A shareholder who purchases additional Shares may obtain reduced sales 
charges as set forth in the table above through a right of accumulation. In 
addition, an investor may obtain reduced sales charges as set forth above 
through a right of accumulation of purchases of Shares and purchases of 
shares of other mutual funds in the ISI family of funds. The applicable sales 
charge will be determined based on the total of (a) the investor's current 
purchase plus (b) an amount equal to the then current net asset value or 
cost, whichever is higher, of all Shares and of all shares of such other 
mutual funds in the ISI family of funds held by the shareholder. To obtain 
the reduced sales charge through a right of accumulation, the shareholder 
must provide Armata, either directly or through a Participating Dealer or 
Shareholder Servicing Agent, as applicable, with sufficient information to 
verify that the shareholder has such a right. The Fund may amend or terminate 
this right of accumulation at any time as to subsequent purchases. The term 
"purchase" refers to an individual purchase by a single purchaser, or to 
concurrent purchases, which will be aggregated, by a purchaser, the 
purchaser's spouse and their children under the age of 21 years purchasing 
Shares for their own account. 

                                       8
<PAGE> 10

An investor may also obtain the reduced sales charges shown above by 
executing a written Letter of Intent which states the investor's intention to 
invest not less than $50,000 within a 13-month period in Shares. Each 
purchase of Shares under a Letter of Intent will be made at the Offering 
Price applicable at the time of such purchase to the full amount indicated on 
the Letter of Intent. A Letter of Intent is not a binding obligation upon the 
investor to purchase the full amount indicated. The minimum initial 
investment under a Letter of Intent is 5% of the full amount. Shares 
purchased with the first 5% of the full amount will be held in escrow (while 
remaining registered in the name of the investor) to secure payment of the 
higher sales charge applicable to the Shares actually purchased if the full 
amount indicated is not invested. Such escrowed Shares will be involuntarily 
redeemed to pay the additional sales charge, if necessary. When the full 
amount indicated has been purchased, the escrowed Shares will be released. An 
investor who wishes to enter into a Letter of Intent in conjunction with an 
investment in Shares may do so by completing the appropriate section of the 
Application Form attached to this Prospectus. 

The Fund may sell Shares at net asset value (without sales charge) to the 
following: (i) banks, bank trust departments, registered investment advisory 
companies, financial planners and broker-dealers purchasing Shares on behalf 
of their fiduciary and advisory clients, provided such clients have paid an 
account management fee for these services; (ii) investors who have redeemed 
Shares, or shares of any other mutual fund in the ISI family of funds that 
have similar sales charges, in an amount that is not more than the total 
redemption proceeds, provided that the purchase is within six months after 
the redemption and the amount of the purchase is at least $5,000; and (iii) 
current or retired Directors of the Fund, directors and employees (and their 
immediate families) of ISI, the Fund's administrator, and their respective 
affiliates, and employees of Participating Dealers. In addition, investors 
who have redeemed shares of funds in the ISI family of funds that have lower 
sales charges may purchase Shares at net asset value in an amount that is not 
more than the total redemption proceeds, provided that they held the shares 
of such funds for more than 24 months prior to the redemption, and that the 
purchase is within six months after the redemption and the amount of the 
purchase is at least $5,000. 

PURCHASES BY EXCHANGE 

As permitted pursuant to any rule, regulation or order promulgated by the 
SEC, shareholders of other mutual funds in the ISI family of funds that have 
similar sales charges may exchange their shares of those funds for an equal 
dollar amount of Shares. Shares issued pursuant to this offer will not be 
subject to the sales charges described above or any other charge. In 
addition, shareholders of funds in the ISI family of funds that have lower 
sales charges may exchange into other funds in the family upon payment of the 
difference in sales charges, except that the exchange will be made at net 
asset value if the shares have been held for at least 24 months. The net 
asset value of shares purchased and redeemed in an exchange request received 
on a Business Day will be determined on the same day, provided that the 
exchange request is received prior to 4:00 p.m. (Eastern Time). Exchange 
requests received after 4:00 p.m. (Eastern Time) will be effected on the next 
Business Day. 

The exchange privilege may be exercised only in those states where the class 
of shares of such other funds may legally be sold. Investors should receive 
and read the applicable prospectus prior to tendering shares for exchange. 
The Fund may modify or terminate these offers of exchange at any time and 
will provide shareholders with 60 days' written notice prior to any such 
modification or termination. The exchange privilege with respect to other ISI 
funds may also be exercised by telephone. (See "Telephone Transactions" 
below.) 

                                       9
<PAGE> 11

PURCHASES THROUGH AUTOMATIC INVESTING PLAN 

Shareholders may purchase Shares regularly by means of an Automatic Investing 
Plan with a pre-authorized check drawn on their checking accounts. Under this 
plan, the shareholder may elect to have a specified amount invested monthly 
or quarterly in Shares. The minimum initial investment is $250. Each 
subsequent investment must be at least $100 for monthly investments and $250 
for quarterly investments. The amount specified by the shareholder will be 
withdrawn from the shareholder's checking account using the pre-authorized 
check. This amount will be invested in Shares at the applicable Offering 
Price determined on the date the amount is available for investment. 
Participation in the Automatic Investing Plan may be discontinued either by 
the Fund or the shareholder upon 30 days' prior written notice to the other 
party. A shareholder who wishes to enroll in the Automatic Investing Plan may 
do so by completing the appropriate section of the Application Form attached 
to this Prospectus. 

6. How to Redeem Shares 

Shareholders may redeem all or part of their investment on any Business Day 
by transmitting a redemption order through Armata, a Participating Dealer, a 
Shareholder Servicing Agent or by regular or express mail to the Fund's 
transfer agent (the "Transfer Agent"). Shareholders may also redeem Shares by 
telephone (in amounts up to $50,000). (See "Telephone Transactions" below.) A 
redemption order is effected at the net asset value per Share next determined 
after receipt of the order (or, if stock certificates have been issued for 
the Shares to be redeemed, after the tender of the stock certificates for 
redemption). Redemption orders received after 4:00 p.m. (Eastern Time) will 
be effected at the net asset value next determined on the following Business 
Day. Payment for redeemed Shares will be made by check and will be mailed 
within seven days after receipt of a duly authorized telephone redemption 
request or of a redemption order fully completed and, as applicable, 
accompanied by the documents described below: 

1) A letter of instructions, specifying the shareholder's account number with 
   a Participating Dealer or Shareholder Servicing Agent, if applicable, and 
   the number of Shares or dollar amount to be redeemed, signed by all owners 
   of the Shares in the exact names in which their account is maintained; 

2) For redemptions in excess of $50,000, a guarantee of the signature of each 
   registered owner by a member of the Federal Deposit Insurance Corporation, 
   a trust company, broker, dealer, credit union (if authorized under state 
   law), securities exchange or association, clearing agency, or savings 
   association; 

3) If Shares are held in certificate form, stock certificates either properly 
   endorsed or accompanied by a duly executed stock power, for Shares to be 
   redeemed; and 

4) Any additional documents required for redemption by corporations, 
   partnerships, trusts or fiduciaries. 

Dividends payable up to the date of redemption of Shares will be paid on the 
next dividend payable date. If all of the Shares in a shareholder's account 
have been redeemed on a dividend payable date, the dividend will be remitted 
by check to the shareholder. The Fund has the power, under its Articles of 
Incorporation, to redeem shareholder accounts amounting to less than $500 
upon 60 days' written notice. 

7. Telephone Transactions 

Shareholders may exercise the exchange privilege with respect to other ISI 
funds, or redeem Shares in amounts up to $50,000, by notifying the Transfer 
Agent by telephone at (800) 882-8585 on any Business Day between the hours of 
8:30 a.m. and 5:30 p.m. (Eastern Time) or by regular or express mail at its 
address listed under "Custodian, Transfer Agent, Accounting Services." 
Telephone transaction privileges are automatic. Shareholders may specifically 
request that no telephone redemptions or exchanges be accepted for their 
accounts. This election may be made on the Application Form or at any time 
thereafter by completing and returning appropriate documentation supplied by 
the Transfer Agent. 
                                       10
<PAGE> 12

A telephone exchange or redemption placed by 4:00 p.m. (Eastern Time) or the 
close of the New York Stock Exchange, whichever is earlier, is effective that 
day. Telephone orders placed after 4:00 p.m. (Eastern Time) will be effected 
at the net asset value as determined on the next Business Day. The Fund and 
the Transfer Agent will employ reasonable procedures to confirm that 
instructions communicated by telephone are genuine. These procedures include 
requiring the investor to provide certain personal identification information 
at the time an account is opened and prior to effecting each transaction 
requested by telephone. In addition, all telephone transaction requests will 
be recorded and investors may be required to provide additional telecopied 
written instructions of such transaction requests. The Fund or the Transfer 
Agent may be liable for any losses due to unauthorized or fraudulent 
telephone instructions if either of them does not employ these procedures. 
Neither the Fund nor the Transfer Agent will be responsible for any loss, 
liability, cost or expense for following instructions received by telephone 
that either of them reasonably believes to be genuine. During periods of 
extreme economic or market changes, shareholders may experience difficulty in 
effecting telephone transactions. In such event, requests should be made by 
regular or express mail. Shares held in certificate form may not be exchanged 
or redeemed by telephone. (See "How to Invest in the Fund -- Purchases by 
Exchange" and "How to Redeem Shares.") 

8. Dividends and Taxes 

DIVIDENDS AND DISTRIBUTIONS 

The Fund's policy is to distribute to shareholders substantially all of its 
net investment income in the form of monthly dividends. The Fund may 
distribute to shareholders any net capital gains (the excess of net long-term 
capital gains over net short-term capital losses) on an annual basis or, 
alternatively, may elect to retain such net capital gains and pay tax 
thereon. 

Unless the shareholder elects otherwise, all income and capital gains 
distributions will be reinvested in additional Shares at net asset value per 
Share on payment date. Shareholders may elect to terminate automatic 
reinvestment by giving written notice to the Transfer Agent (see "Custodian, 
Transfer Agent, Accounting Services"), either directly or through their 
Participating Dealer or Shareholder Servicing Agent, at least five days 
before the next date on which dividends or distributions will be paid. 

TAX TREATMENT OF DIVIDENDS AND DISTRIBUTIONS 

The following is only a general summary of certain federal tax considerations 
affecting the Fund and the shareholders. 

No attempt is made to present a detailed explanation of the tax treatment of 
the Fund or the shareholders, and the discussion here is not intended as a 
substitute for careful tax planning. 

The following summary is based on current tax laws and regulations, which may 
be changed by legislative, judicial, or administrative action. The Statement 
of Additional Information sets forth further information regarding taxes. 

The Fund has been and expects to be taxed as a regulated investment company 
under Subchapter M of the Internal Revenue Code of 1986, as amended (the 
"Code"). As long as the Fund qualifies for this tax treatment, it will be 
relieved of federal income tax on amounts distributed to shareholders. The 
Fund also intends to make sufficient distributions prior to the end of each 
calendar year to avoid liability for federal excise tax. 

The Fund intends to qualify to pay "exempt-interest dividends" to its 
shareholders, by satisfying the Code's requirements that at the close of each 
quarter of its taxable year at least 50% of the value of its total assets 
consists of obligations the interest on which is exempt from federal income 
tax. 

So long as this and certain other requirements are met, dividends derived 
from the Fund's net tax-exempt interest income will be "exempt-interest 
dividends" that are excluded from the gross income of the Fund's shareholders 
for federal income tax purposes. Exempt interest dividends may, however, have 
collateral federal income tax consequences, including alternative minimum tax 
consequences. Furthermore, the Fund may not be an appropriate investment for 
persons who are "substantial users" of facilities financed with industrial 
development bonds or private activity bonds (or related parties to 
"substantial users"). (See the Statement of Additional Information.) 

                                       11

<PAGE> 13

Distributions to shareholders of net investment income of the Fund that is 
not tax-exempt interest and of net short-term capital gains of the Fund will 
be taxable to shareholders as ordinary income, whether such distributions are 
received in cash or in additional Shares. 

Current federal tax law limits the types and volumes of bonds qualifying for 
the federal income tax exemption of interest, which may have an effect on the 
ability of the Fund to purchase sufficient amounts of tax-exempt securities 
to satisfy the Code's requirements for the payment of exempt interest 
dividends. 

Distributions to shareholders of net capital gains of the Fund are taxable to 
shareholders as long-term capital gains, whether received in cash or 
additional Shares, and regardless of how long a shareholder has held the 
Shares. Shareholders will be advised annually as to the federal income tax 
status of distributions made during the year. 

Ordinarily, shareholders will include all dividends declared by the Fund as 
income in the year of payment. However, dividends declared payable to 
shareholders of record in December of one year, but paid in January of the 
following year, will be deemed for tax purposes to have been received by the 
shareholders and paid by the Fund in the year in which the dividends were 
declared. 

Any gain or loss recognized on a sale, exchange or redemption of Shares of 
the Fund by a shareholder who is not a dealer in securities will generally be 
treated as a long-term capital gain or loss if the Shares have been held for 
more than twelve months and otherwise will be treated as a short-term capital 
gain or loss. Any loss recognized by a shareholder upon the sale of Shares of 
the Fund held six months or less, however, will be disallowed to the extent 
of any exempt-interest dividends received by the shareholder with respect to 
such Shares. If Shares on which a long-term capital gains distribution has 
been received are subsequently sold or redeemed and such Shares have been 
held for six months or less, any loss recognized will be treated as long-term 
capital loss to the extent of the long-term capital gains distribution. 

Interest on indebtedness incurred or continued by shareholders to purchase or 
carry Shares will not be deductible for federal income tax purposes. 

The Fund may not be a suitable investment for tax-exempt shareholders and 
plans, because such shareholders and plans would not gain any additional 
benefit from the receipt of exempt-interest dividends. 

Shareholders are encouraged to consult with their tax advisors concerning the 
application of state and local taxes to an investment in the Fund. 

9. Management of the Fund 

The overall business and affairs of the Fund are managed by its Board of 
Directors. The Board approves all significant agreements between the Fund and 
persons or companies furnishing services to the Fund, including the Fund's 
agreements with its investment advisor, distributor, administrator, custodian 
and transfer agent. The day-to-day operations of the Fund are delegated to 
the Fund's officers, to Armata, as distributor of the Shares, to the Advisor 
and to the Fund's administrator. Four Directors and all of the officers of 
the Fund are officers or employees of Armata, ISI or the Fund's 
administrator. The other Directors of the Fund have no affiliation with 
Armata, ISI or the Fund's administrator. 

The Fund's Directors and officers are as follows: 

*Edward S. Hyman  ......  Chairman and Director 
*W. James Price  .......  Vice Chairman and Director 
*Richard T. Hale  ......  Vice Chairman and Director 
*R. Alan Medaugh  ......  Director and President 
 N. Bruce Hannay  ......  Director 
 John F. Kroeger  ......  Director 
 Harry Woolf  ..........  Director 
 James J. Cunnane  .....  Director 
 Louis E. Levy  ........  Director 
 Eugene J. McDonald  ...  Director 
 Edward J. Veilleux  ...  Vice President 
 Brian C. Nelson  ......  Vice President and Secretary 
 Nancy Lazar  ..........  Vice President 
 Kathleen Simonson  ....  Vice President 
 Diana M. Ellis  .......  Treasurer 
 Carrie L. Butler  .....  Assistant Vice President 
 Laurie D. DePrine  ....  Assistant Secretary 

- ------ 
* Messrs. Hyman, Price, Medaugh and Hale are "interested persons" of the Fund 
  within the meaning of Section 2(a)(19) under the Investment Company Act of 
  1940, as amended (the "Investment Company Act"). 

                                       12

<PAGE> 14

10. Investment Advisor 

ISI, a registered investment advisor, serves as investment advisor to the 
Fund pursuant to an investment advisory agreement dated as of April 1, 1991. 
ISI employs Messrs. Edward S. Hyman and R. Alan Medaugh. Due to their stock 
ownership, Messrs. Hyman and Medaugh may be deemed to be controlling persons 
of ISI. As of January 31, 1995, the Advisor had approximately $1 billion 
under management representing both tax-free and taxable accounts. In 
addition, the Advisor publishes a variety of economic research reports 
including "Weekly Economic Data" which follows the trends that may determine 
the direction of interest rates. The Advisor also acts as investment advisor 
to Total Return U.S. Treasury Fund, Inc. and North American Government Bond 
Fund, Inc., open-end investment companies with approximately $430 million of 
net assets as of January 31, 1995. 

For the fiscal year ended October 31, 1994, the Advisor received a fee (net 
of fee waivers) equal to .26% of the Fund's average daily net assets. ISI and 
the Fund's administrator have voluntarily agreed to reduce their respective 
annual fees proportionately, if necessary, so that the Fund's annual expenses 
do not exceed .90% of the Fund's average daily net assets. (See "Fund 
Expenses.") 

The address of the Advisor is 717 Fifth Avenue, New York, New York 10022 
(telephone: (800) 955-7175). 

PORTFOLIO MANAGERS 

Edward S. Hyman, Chairman of ISI and the Fund, and R. Alan Medaugh, President 
of ISI and President and a Director of the Fund, have shared direct portfolio 
management responsibility for the Fund since its inception. Mr. Hyman is 
responsible for developing the economic analysis upon which the Fund's 
selection of investments is based. (See "Investment Program.") Before joining 
ISI, Mr. Hyman was a vice chairman and member of the Board of C.J. Lawrence 
Inc. and prior thereto, an economic consultant at Data Resources. He writes 
two international economic reports: Weekly International Highlights and the 
monthly International Economic Review. He also writes three weekly domestic 
reports: Weekly Economic Data, Weekly Money Report and Economic Estimates. 
Mr. Hyman also writes a monthly domestic report, The Month's Best Charts. In 
addition, he and his staff compile a Daily Economic Fax. These international 
and domestic reports are sent to ISI's private institutional clients in the 
United States and overseas. The periodical Institutional Investor, which 
rates analysts and economists on an annual basis, has rated Mr. Hyman as its 
"first team" economist, which is its highest rating, in each of the last 
fifteen years. 

Mr. Medaugh is responsible for day-to-day portfolio management. Prior to 
joining ISI, Mr. Medaugh was Managing Director of C.J. Lawrence Fixed Income 
Management and prior thereto Senior Vice President and bond portfolio manager 
at Fiduciary Trust International. While at Fiduciary Trust International, Mr. 
Medaugh led their Fixed-Income Department which managed $5 billion of 
international fixed income portfolios for institutional clients. Mr. Medaugh 
also had prior experience as a bond portfolio manager at both Putnam 
Management Company and Fidelity Management and Research. 

11. Administrator 

Investment Company Capital Corp. ("ICC"), 135 East Baltimore Street, 
Baltimore, Maryland 21202 provides administration services to the Fund. ICC 
is a wholly-owned subsidiary of Alex. Brown and an affiliate of Armata. 

ICC supervises the day-to-day operations of the Fund, including the 
preparation of registration statements, proxy materials, shareholder reports, 
compliance with all requirements of securities laws in the states in which 
the Shares are distributed and oversight of the relationship between the Fund 
and its other service providers. For its services as administrator of the 
Fund for the period from January 1, 1994 through October 31, 1994, ICC 
received an annualized fee (net of fee waivers) equal to .13% of the Fund's 
average daily assets. ICC and ISI have voluntarily agreed to reduce their 
respective annual fees proportionately, if necessary, so that the Fund's 
annual expenses do not exceed .90% of the Fund's average daily net assets. 
(See "Fund Expenses.") Prior to January 1, 1994, Alex. Brown provided 
administration services to the Fund and, for the period from November 1, 1993 
through December 31, 1993, received an annualized fee (net of fee waivers) 
equal to .13% of the Fund's average daily net assets. 

ICC also serves as the Fund's transfer and dividend disbursing agent and 
provides accounting services to the Fund. (See "Custodian, Transfer Agent, 
Accounting Services.") 

                                       13

<PAGE> 15

12. Distributor 

Armata acts as distributor of the Shares pursuant to a Distribution Agreement 
and related Plan of Distribution (the "Plan") adopted pursuant to Rule 12b-1 
under the Investment Company Act. Armata is a broker-dealer that was formed 
in 1983 and is an affiliate of the Administrator. As compensation for its 
services for the fiscal year ended October 31, 1994, Armata received a fee 
equal to .25% of the Shares' average daily net assets. Armata expects to 
allocate on a proportional basis up to all of its fee to selected 
Participating Dealers as compensation for their ongoing shareholder services, 
including processing redemption and sale requests and responding to 
shareholder inquiries. 

In addition, the Fund may enter into Shareholder Servicing Agreements with 
certain financial institutions, such as banks, to act as Shareholder 
Servicing Agents, pursuant to which Armata will allocate on a proportional 
basis up to all of its distribution fee as compensation for such financial 
institutions' ongoing shareholder services. Such financial institutions may 
impose separate fees in connection with these services and investors should 
review this Prospectus in conjunction with any such institution's fee 
schedule. 

Payments under the Plan are made as described above regardless of Armata's 
actual cost of providing distribution services and may be used to pay 
Armata's overhead expenses. If the cost of providing distribution services to 
the Fund in connection with the sale of the Shares is less than .25% of the 
average daily net assets invested in Shares for any period, the unexpended 
portion of the distribution fee may be retained by Armata. Armata or its 
associated persons will from time to time and from its own resources pay or 
allow additional discounts or promotional incentives in the form of cash or 
other compensation (including merchandise or travel) to Participating 
Dealers. 

13. Custodian, Transfer Agent, Accounting Services 

PNC Bank, National Association ("PNC Bank"), a national banking association 
with offices at Airport Business Park, 200 Stevens Drive, Lester, 
Pennsylvania 19113, acts as custodian of the Fund's assets. Investment 
Company Capital Corp., 135 East Baltimore Street, Baltimore, Maryland 21202 
(telephone: (800) 882-8585), is the Fund's transfer and dividend disbursing 
agent and provides accounting services to the Fund. As compensation for 
providing accounting services for the period from January 1, 1994 through 
October 31, 1994, ICC received from the Fund an annualized fee equal to .05% 
of the Fund's average daily net assets. (See the Statement of Additional 
Information.) Prior to January 1, 1994, Alex. Brown provided accounting 
services to the Fund and for the period from November 1, 1993 through 
December 31, 1993, received an annualized fee equal to .05% of the Fund's 
average daily net assets. ICC also serves as the Fund's administrator. 

14. Performance Information 

From time to time, the Fund may advertise its performance, including 
comparisons with other mutual funds with similar investment objectives and to 
relevant indices. All such advertisements will show the average annual total 
return, net of the Fund's maximum sales charge, over one, five and ten year
periods or, if such periods have not yet elapsed, shorter periods corresponding
to the life of the Fund. Such total return quotations will be computed by
finding the average annual compounded rates of return over such periods that
would equate an assumed initial investment of $1,000 to the ending redeemable
value, net of the maximum sales charge and other fees, according to the required
standardized calculation. The standardized calculation is required by the SEC to
provide consistency and comparability in investment company advertising and is
not equivalent to a yield calculation.

The Fund may also advertise yield and tax-equivalent yield quotations. Any 
yield quotation of the Fund is based on the annualized net investment income 
per share of the Fund over a 30 day period. The yield for the Fund is 
calculated by dividing the net investment income per share of the Fund earned 
during the period by the maximum offering price per share of the Fund on the 
last day of that period. The resulting figure is then annualized. The Fund's 
yield calculations assume a maximum sales charge of 4.45% for the Shares. The 
Fund's taxable-equivalent yield is calculated by determining the rate of 
return that would have to be achieved on a fully taxable investment to 
produce the after tax equivalent of the Fund's yield. In calculating 
taxable-equivalent yield, the Fund assumes certain tax brackets for 
shareholders. 

                                       14

<PAGE> 16

If the Fund compares its performance to other funds or to relevant indices, 
the Fund's performance will be stated in the same terms in which such 
comparative data and indices are stated. 

The performance of the Fund may be compared to data prepared by Lipper 
Analytical Services, Inc., CDA Investment Technologies, Inc. and Morningstar 
Inc., independent services which monitor the performance of mutual funds. The 
performance of the Fund may also be compared to the Shearson Lehman Municipal 
Bond Index, the Consumer Price Index, the return on 90 day U.S. Treasury 
Bills, long-term U.S. Treasury bonds, bank certificates of deposit, the 
Standard & Poor's 500 Stock Index and the Dow Jones Industrial Average. The 
Fund may also use total return performance data as reported in the following 
national financial and industry publications that monitor the performance of 
mutual funds: Money Magazine, Forbes, Business Week, Barron's, Investor's 
Daily, IBC/Donoghue's Money Fund Report and The Wall Street Journal. For 
these purposes, the performance of the Fund, as well as the performance of 
such indices, may not reflect sales charges, the inclusion of which would 
reduce performance results. 

Performance will fluctuate, and any statement of performance should not be 
considered as representative of the future performance of the Fund. 
Shareholders should remember that performance is generally a function of the 
type and quality of investments held by the Fund, operating expenses and 
market conditions. Any fees charged by banks with respect to customer 
accounts through which Shares may be purchased, although not included in 
calculations of performance, will reduce performance results. 

15. General Information 

CAPITAL SHARES 

The Fund is a Maryland corporation, authorized to issue forty million shares 
of capital stock, with a par value of $.001 per share. Shares have equal 
rights with respect to voting. Voting rights are not cumulative, so the 
holders of more than 50% of the outstanding Shares voting together for 
election of Directors may elect all the members of the Board of Directors of 
the Fund. In the event of liquidation or dissolution of the Fund, each Share 
is entitled to its portion of the Fund's assets after all debts and expenses 
have been paid. The Board of Directors of the Fund is authorized to establish 
additional "series" of shares of capital stock, each of which would evidence 
interests in a separate portfolio of securities, and separate classes of each 
series of the Fund. The Board has no present intention of establishing any 
additional series of the Fund but does have another class of shares in 
addition to the Shares offered hereby, "Flag Investors Managed Municipal Fund 
Class A Shares." Shares of that class are sold through broker-dealers and 
have similar 12b-1 fees and front-end sales charges as the Shares. Different 
classes may be offered to certain investors and holders of such shares may be 
entitled to certain exchange privileges not offered to Shares. All classes of 
the Fund share a common investment objective, portfolio and advisory fee, but 
the classes may have different distribution expenses and sales charges and, 
accordingly, performance may differ. 

ANNUAL MEETINGS 

The Fund does not expect to hold annual meetings of shareholders but special
meetings of shareholders may be held under certain circumstances. Shareholders
of the Fund retain the right, under certain circumstances, to request that a
meeting of shareholders be held for the purpose of considering the removal of a
Director from office, and if such a request is made, the Fund will assist with
shareholder communications in connection with the meeting.

REPORTS 

The Fund furnishes shareholders with quarterly reports containing information 
about the Fund and its operations, including a list of investments held in 
the Fund's portfolio and financial statements. The annual financial 
statements are audited by the Fund's independent accountants, Coopers & 
Lybrand L.L.P. 

SHAREHOLDER INQUIRIES 

Shareholders with inquiries concerning their Shares should contact the 
Transfer Agent at (800) 882-8585, Armata, ISI, a Participating Dealer or 
Shareholder Servicing Agent, as appropriate. 

                                       15








<PAGE> 17






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<PAGE> 18



                      ISI MANAGED MUNICIPAL FUND SHARES 
                           NEW ACCOUNT APPLICATION 
- ----------------------------------------------------------------------------- 

Make check payable to "ISI Managed Municipal Fund Shares" and mail with this 
application to: 

        ISI Mutual Funds 
        P.O. Box 419426 
        Kansas City, MO 64141-6426 


For assistance in completing this form, please call the Transfer Agent at 
(800) 882-8585. 

The minimum initial purchase is $5,000, except that the minimum initial 
purchase for participants in the Fund's Automatic Investing Plan is $250. 
Each subsequent purchase requires a $250 minimum, except that the minimum 
subsequent purchase under the Fund's Automatic Investing Plan is $100 for 
monthly purchases and $250 for quarterly purchases. The Fund reserves the 
right not to accept checks for more than $50,000 that are not certified or 
bank checks. 

- -----------------------------------------------------------------------------
YOUR ACCOUNT REGISTRATION (PLEASE PRINT) 

INDIVIDUAL OR JOINT TENANT 

- ----------------------------------------------------------------------------- 
First Name                  Initial                Last Name 

- ----------------------------------------------------------------------------- 
Social Security Number 

- ----------------------------------------------------------------------------- 
Joint Tenant                Initial                Last Name 

- ----------------------------------------------------------------------------- 
Social Security Number 

CORPORATIONS, TRUSTS, PARTNERSHIPS, ETC. 

- -----------------------------------------------------------------------------
Name of Corporation, Trust or Partnership 

- ----------------------------------------------------------------------------- 
Tax ID Number 

- ----------------------------------------------------------------------------- 
Name of Trustees (If to be included in the Registration) 

                                            ---------------------------------
                                            Existing Account No., if any 
GIFTS TO MINORS 

- ----------------------------------------------------------------------------- 
Custodian's Name (only one allowed by law) 

- ----------------------------------------------------------------------------- 
Minor's Name (only one) 

- ----------------------------------------------------------------------------- 
Social Security Number of Minor 

under the __________________ Uniform Gifts to Minors Act 
          State of Residence 

YOUR MAILING ADDRESS 

- ----------------------------------------------------------------------------- 
Street 

- ----------------------------------------------------------------------------- 
City                                       State               Zip 
(    ) 

- -----------------------------------------------------------------------------
Daytime Phone 

<PAGE> 19

- -----------------------------------------------------------------------------
STATEMENT OF INTENTION (OPTIONAL) 

[ ] I agree to the Letter of Intent and Escrow Agreement set forth in the 
accompanying prospectus. I intend to invest over a 13-month period in shares 
of ISI Managed Municipal Fund Shares in an aggregate amount at least equal 
to: 

_______$50,000  _______$100,000  _______$250,000  ________$500,000 

_______$1,000,000  ________$2,000,000  _________$3,000,000 

RIGHT OF ACCUMULATION (OPTIONAL) 

[ ] I already own shares of the Fund(s) set forth below to be applied for a 
reduced sales charge. List the Account numbers of other Funds that you or 
your immediate family (spouse and children under 21) already own that qualify 
for reduced sales charges. 

      Fund Name        Account No.        Owner's Name        Relationship 
      ---------        -----------        ------------        ------------ 
- ----------------------------------------------------------------------------- 
- ----------------------------------------------------------------------------- 
- ----------------------------------------------------------------------------- 
- ----------------------------------------------------------------------------- 


<PAGE> 20

DISTRIBUTION OPTIONS 

Please check appropriate boxes. There is no sales charge for reinvested 
dividends. If none of the options are elected, all distributions will be 
reinvested. 

Income Dividends 
[ ] Reinvested in additional shares 
[ ] Paid in Cash 

Capital Gains 
[ ] Reinvested in additional shares 
[ ] Paid in Cash 

- -----------------------------------------------------------------------------
AUTOMATIC INVESTING PLAN (OPTIONAL) 

[ ] I authorize you as Agent for the Automatic Investing Plan to 
automatically invest $_______ for me, on a monthly or quarterly basis, on or 
about the 20th of each month or if quarterly, the 20th of January, April, 
July and October, and to draw a bank draft in payment of the investment 
against my checking account. (Bank drafts may be drawn on commercial banks 
only.) 


Minimum Initial Investment: $250 
Subsequent Investments (check one):            ------------------------------
  [ ] Monthly ($100 minimum)                    Please attach a voided check.
  [ ] Quarterly ($250 minimum)                 ------------------------------
- ----------------------------------------------------------------------------- 
Bank Name 

- -----------------------------------------------------------------------------
Existing ISI Managed Municipal Fund Account No., if any 


- -----------------------------------------------------------------------------
Depositor's Signature                                  Date 

- -----------------------------------------------------------------------------
Depositor's Signature                                  Date 
(if joint acct., both must sign) 

- -----------------------------------------------------------------------------
TELEPHONE TRANSACTIONS 

I understand that I will automatically have telephone redemption privileges 
(for amounts up to $50,000) and telephone exchange privileges (with respect 
to other ISI Funds) unless I mark one or both of the boxes below. 

                 No, I/We do not want 
                   [ ] Telephone redemption privileges 
                   [ ] Telephone exchange privileges 

Redemptions effected by telephone will be mailed to the address of record. If 
you would prefer redemptions mailed to a pre-designated bank account, please 
provide the following information: 
   Bank: ______________________________________________________ 
Address: ______________________________________________________ 
         ______________________________________________________ 

  Bank Account No: ____________________________________________ 
Bank Account Name: ____________________________________________ 

<PAGE> 21
- -----------------------------------------------------------------------------
SIGNATURE AND TAXPAYER CERTIFICATION 

I have received a copy of the Fund's prospectus dated February 28, 1995. 
Under penalties of perjury, I certify (1) that the number shown on this form 
is my correct taxpayer identification number and (2) that I am not subject to 
backup withholding as a result of a failure to report all interest or 
dividends, or the Internal Revenue Service has notified me that I am no 
longer subject to backup withholding. (Strike out the language in (2) if it 
is not correct.) 
If a non-resident alien, please indicate country of residence:________________ 
I acknowledge that the telephone redemption and exchange privileges are 
automatic and will be effected as described in the Fund's current prospectus 
(see "Telephone Transactions"). I also acknowledge that I may bear the risk 
of loss in the event of fraudulent use of such privileges. If I do not want 
telephone redemption or exchange privileges, I have so indicated on this 
Application. 

- -----------------------------------------------------------------------------
Signature                                                  Date 

- -----------------------------------------------------------------------------
Signature (if a joint acct., both must sign)               Date 

FOR DEALER USE ONLY 

Dealer's Name:   ______________________________ Dealer Code: ________________
Dealer's Address:______________________________ Branch Code: ________________ 
                 ______________________________
Representative:  ______________________________ Rep. No.     ________________ 



<PAGE> 22









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<PAGE> 23




                                     ISI 
                                   MANAGED 
                                MUNICIPAL FUND 
                                    SHARES 

                             (A Class of Managed 
                            Municipal Fund, Inc.) 

No person has been authorized to give any information or to make 
representations not contained in this Prospectus and, if given or made, such 
information must not be relied upon as having been authorized by the Fund or 
its distributor. This Prospectus does not constitute an offering by the Fund 
or by its distributor in any jurisdiction in which such offering may not 
lawfully be made. 

                               TABLE OF CONTENTS
 
                                        Page 
                                        ----
 1. Fund Expenses  ................      2 
 2. Financial Highlights  .........      3 
 3. Investment Program  ...........      4 
 4. Investment Restrictions  ......      7 
 5. How to Invest in the Fund  ....      7 
 6. How to Redeem Shares  .........     10 
 7. Telephone Transactions  .......     10 
 8. Dividends and Taxes  ..........     11 
 9. Management of the Fund  .......     12 
10. Investment Advisor  ...........     13 
11. Administrator  ................     13 
12. Distributor  ..................     14 
13. Custodian, Transfer Agent, 
    Accounting Services ...........     14 
14. Performance Information  ......     14 
15. General Information  ..........     15 


<PAGE> 24





            ISI 
                   International Strategy and Investment
                                  
                                      ISI
                                    MANAGED
                                MUNICIPAL FUND 
                                    SHARES
 
                             (A Class of Managed 
                            Municipal Fund, Inc.) 

   A mutual fund with the investment objective of a high level of total 
return with relative stability of principal and secondarily, high current 
income through investment in a portfolio consisting primarily of municipal 
obligations the interest on which is exempt from federal income tax. 


                              FEBRUARY 28, 1995 








                                                                      PROSPECTUS
                                     





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