NATIONAL MUNICIPALS PORTFOLIO
N-30D, 1998-05-26
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<PAGE>

                        Investing
   [LOGO OF EATON       for the                        [PICTURE OF EDUCATIONAL 
 VANCE APPEARS HERE]    21st                           INSTITUTION APPEARS HERE]
                        Century






        Semiannual Report March 31, 1998






[PICTURE OF HIGHWAY               EATON VANCE
  APPEARS HERE]                    NATIONAL
                                  MUNICIPALS
                                     FUND




                     Global Management-Global Distribution





[PICTURE OF THE BROOKLYN
  BRIDGE APPEARS HERE]
<PAGE>

Eaton Vance National Municipals Fund as of March 31, 1998

INVESTMENT UPDATE


[PHOTO OF  
THOMAS M. METZOLD, 
     APPEARS HERE]



Thomas M. Metzold,
Portfolio Manager


Investment Environment
- --------------------------------------------------------------------------------

  The Economy

 . In the latter half of 1997 and into 1998, the economic climate in the U.S.
  continued to be favorable for fixed-income investors. Moderate growth, very
  low inflation, and a federal budget surplus were among the factors that
  contributed to a general decline in interest rates during the period.

 . Gross Domestic Product - the primary indicator of overall U.S. economic
  growth - grew at real annual rates of 3.1% and 3.9% in the third and fourth
  quarters of 1997, respectively. The U.S. civilian unemployment rate reached a
  24-year low of 4.6% in February. Meanwhile, inflation, as measured by the
  Consumer Price Index, increased 1.7% in 1997 and only 0.2% (annualized) in the
  first quarter of 1998.

 . The consensus among leading economists is that inflation has remained low due
  to the effects of global competition, a strong dollar - made even stronger by
  the Asian currency crisis - and higher productivity brought on by advances in
  technology. 

  The Bond Market

 . The municipal market turned in a solid performance during the period. The
  Lehman Brothers Municipal Bond Index rose 3.9% in the six months ended March
  31, 1998, while the overall bond market was helped by reports of continued low
  inflation.+

 . The municipal market slightly underperformed the Treasury market last year
  due to a rise in municipal supply. According to the Bond Market Association,
  long-term municipal issuance rose to more than $220 billion in 1997, up from
  around $190 billion the previous year. Nevertheless, 1997 was still a good
  year for municipal bonds. 

  Management Discussion

 . The Fund maintained a slightly longer-than-average duration than our peer
  group. As the market rallied during the period, our longer average maturity
  helped boost the Fund's performance.

 . The Fund benefited from a number of prerefundings, as higher-coupon bonds
  were advance-refunded by their issuers. Because these escrowed bonds are
  backed by Treasuries, their market value increases to reflect the fact they no
  longer have any credit risk.

 . The Fund remained well diversified. Among our largest sector weightings were
  industrial development holdings, whose underlying projects benefited from the
  strong economy. The Portfolio also had a large exposure to zero coupon bonds,
  which performed extremely well in a falling rate environment.

Fund Performance
- --------------------------------------------------------------------------------
  The Past Six Months

 . During the six months ended March 31, 1998, the Fund's Class A shares had a
  total return of 5.6%. This return resulted from an increase in net asset value
  (NAV) per share to $11.56 on March 31, 1998 from $11.26 on September 30, 1997
  and the reinvestment of $0.324 per share in tax-free dividend income./1/

 . The Fund's Class B shares had a total return of 5.1% during the period, the
  result of an increase in NAV to $10.79 from $10.53 and the reinvestment of
  $0.274 per share in tax-free dividend income./1/

 . The Fund's Class C shares had a total return of 5.1% during the period, the
  result of an increase in NAV to $10.27 from $10.01 and the reinvestment of
  $0.250 per share in tax-free dividend income./1/

 . Based on the Fund's most recent dividends and NAVs per share of $11.56 for
  Class A, $10.79 for Class B, and $10.27 for Class C, the distribution rates
  were 5.67%, 5.00%, and 4.89%, respectively./2/ The SEC 30-day yields at March
  31 were 4.80%, 4.23%, and 4.22%, respectively./3/

- --------------------------------------------------------------------------------
    /1/These returns do not include the 4.75% maximum sales charge for the
    Fund's Class A shares or the applicable contingent deferred sales charge
    (CDSC) for the Fund's Class B and Class C shares; a portion of the Fund's
    income may be subject to federal alternative minimum tax and/or federal and
    state income tax. /2/The Fund's distribution rate represents actual
    distributions paid to shareholders and is calculated by dividing the last
    distribution per share (annualized) by the net asset value. /3/The Fund's
    SEC yield is calculated by dividing the net investment income per share for
    the 30-day period by the offering price at the end of the period and
    annualizing the result. /4/Returns are calculated by determining the
    percentage change in net asset value (NAV) with all distributions
    reinvested. SEC returns for Class A reflect maximum sales charge as noted.
    For Class B, returns reflect applicable CDSC based on the following
    schedule: 5% - 1st and 2nd years; 4% - 3rd year; 3% - 4th year; 2% - 5th
    year; 1% - 6th year. For Class C, one year return reflects 1% CDSC.
    /5/Subject to change due to active management. /+/It is not possible to
    invest directly in an index. 
    Past performance is no guarantee of future results. Investment return and
    principal value will fluctuate so that shares, when redeemed, may be worth
    more or less than their original cost.
- --------------------------------------------------------------------------------
Fund Information
as of March 31, 1998


Performance/4/              Class A  Class B  Class C
- --------------------------------------------------------------------------------

Average Annual Total Returns (at net asset value)
- --------------------------------------------------------------------------------
One Year                       16.4%   15.6%   15.5%
Five Years                      N.A.    7.6     N.A.
Ten Years                       N.A.    8.2     N.A.
Life of Fund*                  10.4     7.8     6.4

SEC Average Annual Total Returns (including sales charge or applicable CDSC)
- --------------------------------------------------------------------------------
One Year                       10.9%   10.6%   14.5%
Five Years                      N.A.    7.3     N.A.
Ten Years                       N.A.    8.2     N.A.
Life of Fund*                   9.1     7.8     6.4


5 Largest Sectors/5/
- --------------------------------------------------------------------------------
By total investments

Escrowed                       19.7%
Industrial Development/
Pollution Control              13.1%
Hospitals                       8.3%
Nursing Homes                   7.0%
Transportation                  6.5%


Portfolio Overview/5/
- --------------------------------------------------------------------------------
Number of Issues                    223
Average Maturity              23.5 yrs.
Effective Maturity            10.3 yrs.
Average Rating                        A
Average Call                   8.3 yrs.
Average Dollar Price             $99.08

- --------------------------------------------------------------------------------
Mutual fund shares are not insured by the FDIC and are not deposits or other
obligations of, or guaranteed by, any depository institution. Shares are subject
to investment risks, including possible loss of principal invested.
- --------------------------------------------------------------------------------
*Inception Dates - Class A: 4/5/94; Class B: 12/19/85; Class C: 12/3/93


                                        2
<PAGE>

Eaton Vance National Municipals Fund as of March 31, 1998

FINANCIAL STATEMENTS (Unaudited)

Statement of Assets and Liabilities                   

As of March 31, 1998                                                     

Assets                                                                   
- --------------------------------------------------------------------------------
Investment in National Municipals Portfolio, at value 
    (Note 1A) (identified cost, $1,955,188,395)                  $2,250,501,764
Receivable for Fund shares sold                                       6,741,920 
Deferred organization expenses (Note 1D)                                  9,804 
- --------------------------------------------------------------------------------
Total assets                                                     $2,257,253,488 
- --------------------------------------------------------------------------------


Liabilities                                                              
- --------------------------------------------------------------------------------
Dividends payable                                                $    4,570,166 
Payable for Fund shares redeemed                                      3,280,879 
Payable to affiliate for Trustees' fees (Note 4)                            946 
Accrued expenses                                                      1,518,422 
- --------------------------------------------------------------------------------
Total liabilities                                                $    9,370,413 
- --------------------------------------------------------------------------------
Net Assets                                                       $2,247,883,075 
- --------------------------------------------------------------------------------


Sources of Net Assets                                                    
- --------------------------------------------------------------------------------
Paid-in capital                                                  $1,997,258,310 
Accumulated net realized loss on investments from
    Portfolio (computed on the basis of identified cost)            (44,652,516)
Accumulated distributions in excess of net investment income            (36,088)
Net unrealized appreciation of investments from
    Portfolio (computed on the basis of identified cost)            295,313,369 
- --------------------------------------------------------------------------------
Total                                                            $2,247,883,075 
- --------------------------------------------------------------------------------


Class A Shares                                                           
- --------------------------------------------------------------------------------
Net Assets                                                       $   85,116,839 
Shares Outstanding                                                    7,365,312 
Net Asset Value and Redemption Price Per Share                           
    (net assets / shares of beneficial 
    interest outstanding)                                        $        11.56 
Offering Price Per Share                                                 
    (100 / 95.25 of net assets value per share)                  $        12.14 
- --------------------------------------------------------------------------------


Class B Shares                                                           
- --------------------------------------------------------------------------------
Net Assets                                                       $2,073,746,602 
Shares Outstanding                                                  192,211,584 
Net Asset Value, Offering Price and Redemption Price Per 
    Share (Note 6)
    (net assets / shares of beneficial interest                  $        10.79 
    outstanding)
- --------------------------------------------------------------------------------


Class C Shares                                                           
- --------------------------------------------------------------------------------
Net Assets                                                       $   89,019,634 
Shares Outstanding                                                    8,668,047 
Net Asset Value, Offering Price and Redemption Price Per 
    Share (Note 6)
    (net assets / shares of beneficial interest                  $        10.27 
    outstanding)
- --------------------------------------------------------------------------------

Statement of Operations

For the Six Months Ended
March 31, 1998                                                           

Investment Income (Note 1B)                                              
- --------------------------------------------------------------------------------
Interest income allocated from Portfolio                         $   71,477,884 
Expenses allocated from Portfolio                                    (4,877,745)
- --------------------------------------------------------------------------------
Net investment income from Portfolio                             $   66,600,139 
- --------------------------------------------------------------------------------


Expenses                                                               
- --------------------------------------------------------------------------------
Compensation of Trustees not members of the
    Administrator's organization (Note 4)                        $        1,323 
Distribution and service fees (Note 5)                                  
    Class A                                                              59,954 
    Class B                                                          10,189,286 
    Class C                                                             421,012 
Transfer and dividend disbursing agent fees                             772,129 
Printing and postage                                                     56,927 
Registration fees                                                        36,066 
Amortization of organization expenses (Note 1D)                          10,731 
Miscellaneous                                                            74,750 
- --------------------------------------------------------------------------------
Total expenses                                                   $   11,622,178 
- --------------------------------------------------------------------------------


Net investment income                                            $   54,977,961 
- --------------------------------------------------------------------------------


Realized and Unrealized
Gain (Loss) from Portfolio                                               
- --------------------------------------------------------------------------------
Net realized gain (loss) --
    Investment transactions (identified cost basis)              $   62,869,299 
    Financial futures contracts                                     (12,173,968)
- --------------------------------------------------------------------------------
Net realized gain on investment transactions                     $   50,695,331 
- --------------------------------------------------------------------------------
Change in unrealized appreciation (depreciation) --
    Investments                                                  $   (2,970,250)
    Financial futures contracts                                       8,081,000 
- --------------------------------------------------------------------------------
Net change in unrealized appreciation (depreciation) 
    of investments                                               $    5,110,750 
- --------------------------------------------------------------------------------


Net realized and unrealized gain on investments                  $   55,806,081 
- --------------------------------------------------------------------------------


Net increase in net assets from operations                       $  110,784,042 
- --------------------------------------------------------------------------------

On sales of $25,000 or more, the offering price of Class A shares is reduced.


                       See notes to financial statements

                                       3
<PAGE>

Eaton Vance National Municipals Fund as of March 31, 1998

FINANCIAL STATEMENTS CONT'D

Statements of Changes in Net Assets

<TABLE> 
<CAPTION>  
                                             Six Months Ended                             
Increase (Decrease)                          March 31, 1998      Year Ended      
in Net Assets                                (Unaudited)         September 30, 1997
- -------------------------------------------------------------------------------------
<S>                                          <C>                 <C> 
From operations --                                                                   
     Net investment income                    $   54,977,961        $  111,643,873   
     Net realized gain on                                                            
         investment transactions                  50,695,331             1,306,387   
     Net change in unrealized                                                        
         appreciation (depreciation)                                         
         of investments                            5,110,750           125,499,848   
- -------------------------------------------------------------------------------------
Net increase in net assets                                                           
     from operations                          $  110,784,042        $  238,450,108   
- -------------------------------------------------------------------------------------
Distributions to shareholders (Note 2) --                                    
     From net investment income                                             
        Class A                               $   (1,875,748)       $           --   
        Class B                                  (52,641,511)         (112,620,886) 
        Class C                                   (2,074,380)                   --   
     In excess of net                                                                 
        investment income                                                           
        Class B                                     (207,846)                   --   
- -------------------------------------------------------------------------------------
Total distributions to shareholders           $  (56,799,485)       $ (112,620,886)
- -------------------------------------------------------------------------------------
Transactions in shares of beneficial 
     interest (Note 3) --                                         
     Proceeds from sale of shares                                             
        Class A                               $   37,540,110        $           --  
        Class B                                  125,450,817           228,261,692  
        Class C                                   16,147,198                    --  
     Net asset value of shares issued 
        to shareholders in payment                                                      
        of distributions declared                                                    
        Class A                                      894,834                    --  
        Class B                                   20,466,777            42,171,754  
        Class C                                    1,277,520                    --  
     Cost of shares redeemed                                                          
        Class A                                   (4,373,801)                   --  
        Class B                                 (163,092,909)         (457,268,290) 
        Class C                                  (13,250,955)                   --  
- -------------------------------------------------------------------------------------
Net increase (decrease) in net                                                       
     assets from Fund                                                                 
     share transactions                       $   21,059,591        $ (186,834,844)
- -------------------------------------------------------------------------------------
Contribution from EV Traditional
     and Classic National             
     Municipals Funds                         $  132,212,939        $           --                                          
- -------------------------------------------------------------------------------------

Net increase (decrease) in                                                   
    net assets                                $  207,257,087        $  (61,005,622)
- -------------------------------------------------------------------------------------
<CAPTION> 
                                             Six Months Ended                             
                                             March 31, 1998      Year Ended      
                                             (Unaudited)         September 30, 1997
- -------------------------------------------------------------------------------------
<S>                                          <C>                 <C> 

Net Assets                                                                   
- -------------------------------------------------------------------------------------
At beginning of period                        $  2,040,625,988      $2,101,631,610  
- -------------------------------------------------------------------------------------
At end of period                              $  2,247,883,075      $2,040,625,988 
- -------------------------------------------------------------------------------------
                                                                                     
Accumulated                                                                          
undistributed                                                                        
(distribution in excess of)                                                          
net investment income                                                                
included in net assets                                                               
- -------------------------------------------------------------------------------------
At end of period                              $        (36,088)     $    1,646,304
- -------------------------------------------------------------------------------------
</TABLE>

                       See notes to financial statements

                                       4
<PAGE>

Eaton Vance National Municipals Fund as of March 31, 1998

FINANCIAL STATEMENTS CONT'D

Financial Highlights

<TABLE> 
<CAPTION> 
                                              Six Months Ended                            Year Ended September 30,
                                               March 31, 1998            -----------------------------------------------------------
                                                 (Unaudited)                1997        1996        1995        1994        1993
                                     -----------------------------------------------------------------------------------------------
                                       Class A     Class B     Class C     Class B     Class B     Class B     Class B     Class B
- ------------------------------------------------------------------------------------------------------------------------------------
<S>                                  <C>         <C>         <C>         <C>         <C>         <C>         <C>         <C> 
Net asset value --                   
   Beginning of period               $   11.260  $   10.530  $   10.010  $    9.900  $    9.800  $    9.410  $   10.570  $    9.820
- ------------------------------------------------------------------------------------------------------------------------------------

Income (loss) from operations       
- ------------------------------------------------------------------------------------------------------------------------------------
Net investment income                $    0.324  $    0.264  $    0.250  $    0.550  $    0.557  $    0.570  $    0.556  $    0.553
                                    
Net realized and unrealized         
   gain (loss) on investments             0.300       0.270       0.260       0.634       0.096       0.395      (1.043)      0.856
- ------------------------------------------------------------------------------------------------------------------------------------
Total income (loss) from            
   operations                        $    0.624  $    0.534  $    0.510  $    1.184  $    0.653  $    0.965  $   (0.487) $    1.409
- ------------------------------------------------------------------------------------------------------------------------------------

Less distributions
- ------------------------------------------------------------------------------------------------------------------------------------
From net investment income           $   (0.324) $   (0.273) $   (0.250) $   (0.554) $   (0.553) $   (0.570) $   (0.556) $   (0.553)

In excess of net investment  
   income                                    --      (0.001)         --          --          --      (0.005)     (0.077)     (0.106)

In excess of net realized  
   gain on investments                       --          --          --          --          --          --      (0.040)         --
- ------------------------------------------------------------------------------------------------------------------------------------
Total distributions                  $   (0.324) $   (0.274) $   (0.250) $   (0.554) $   (0.553) $   (0.575) $   (0.673) $   (0.659)
- ------------------------------------------------------------------------------------------------------------------------------------

Net asset value -- End of period     $   11.560  $   10.790  $   10.270  $   10.530  $    9.900  $    9.800  $    9.410  $   10.570
- ------------------------------------------------------------------------------------------------------------------------------------

Total Return /(1)/                         5.60%       5.12%       5.14%      12.33%       6.84%       10.60%     (4.82)%     14.90%
- ------------------------------------------------------------------------------------------------------------------------------------


Ratios/Supplemental Data
- ------------------------------------------------------------------------------------------------------------------------------------
Net assets, end of period
   (000's omitted)                   $   85,117  $2,073,747  $   89,020  $2,040,626  $2,101,632  $ 2,191,240 $2,171,901  $2,090,482

Ratio of expenses to average
   daily net assets /(2)(3)/               0.72%+      1.54%+      1.55%+      1.60%       1.55%        1.53%      1.51%       1.67%
   
Ratio of expenses to average
   daily net assets after           
   custodian fee reduction /(2)/           0.70%+      1.52%+      1.53%+      1.60%       1.54%        1.52%        --          -- 
   
Ratio of net investment
   income to average daily          
   net assets                              5.70%+      4.95%+      4.94%+      5.45%       5.62%        6.00%      5.54%       5.43%

Portfolio Turnover /(4)/                     --          --          --          --          --           --         --          10%
- ------------------------------------------------------------------------------------------------------------------------------------
</TABLE> 

+     Annualized.
/(1)/ Total return is calculated assuming a purchase at the net asset value on
      the first day and a sale at the net asset value on the last day of each
      period reported. Dividends and distributions, if any, are assumed to be
      reinvested at the net asset value on the reinvestment date. Total return
      is not computed on an annualized basis.
/(2)/ Includes the Fund's share of its corresponding Portfolio's allocated
      expenses for the period the fund was investing in the Portfolio.
/(3)/ The expense ratios for the year ended September 30, 1995 and periods
      thereafter have been adjusted to reflect a change in reporting
      requirements. The new reporting guidelines require the Fund, as well as
      its corresponding Portfolio, to increase its expense ratio by the effect
      of any expense offset arrangements with its service providers. The expense
      ratios for each of the prior periods have not been adjusted to reflect
      this change.
/(4)/ Portfolio Turnover represents the rate of portfolio activity for the
      period while the Fund was making investments directly in securities. The
      portfolio turnover rate for the period since the Fund transferred
      substantially all of its investable assets to the Portfolio is shown in
      the Portfolio's financial statements which are included elsewhere in this
      report.




                       See notes to financial statements

                                       5

<PAGE>
 
Eaton Vance National Municipals Fund as of March 31, 1998 

NOTES TO FINANCIAL STATEMENTS (Unaudited)



1   Significant Accounting Policies
    --------------------------------------
    Eaton Vance National Municipals Fund (the Fund) is a diversified series of
    Eaton Vance Municipals Trust (the Trust). The Trust is an entity of the type
    commonly known as a Massachusetts business trust and is registered under the
    Investment Company Act of 1940, as amended, as an open-end management
    investment company. The Fund offers three classes of shares. Class A shares
    are sold subject to a sales charge imposed at the time of purchase. Class B
    and Class C shares are sold at net asset value and are subject to a
    contingent deferred sales charge (see Note 6). All classes of shares have
    equal rights to assets and voting privileges. Realized and unrealized gains
    and losses and net investment income, other than class specific expenses,
    are allocated daily to each class of shares based on the relative net assets
    of each class to the total net assets of the Fund. Each class of shares
    differs in its distribution plan and certain other class specific expenses.
    The Fund invests all of its investable assets in interests in National
    Municipals Portfolio (the Portfolio), a New York Trust, having the same
    investment objective as the Fund. The value of the Fund's investment in the
    Portfolio reflects the Fund's proportionate interest in the net assets of
    the Portfolio (100% at March 31, 1998). The performance of the Fund is
    directly affected by the performance of the Portfolio. The financial
    statements of the Portfolio, including the portfolio of investments, are
    included elsewhere in this report and should be read in conjunction with the
    Fund's financial statements.

    The following is a summary of significant accounting policies consistently
    followed by the Fund in the preparation of its financial statements. The
    policies are in conformity with generally accepted accounting principles.

    A Investment Valuations -- Valuation of securities by the Portfolio is
    discussed in Note 1A of the Portfolio's Notes to Financial Statements, which
    are included elsewhere in this report.

    B Income -- The Fund's net investment income consists of the Fund's pro rata
    share of the net investment income of the Portfolio, less all actual and
    accrued expenses of the Fund determined in accordance with generally
    accepted accounting principles.

    C Federal Taxes -- The Fund's policy is to comply with the provisions of the
    Internal Revenue Code applicable to regulated investment companies and to
    distribute to shareholders each year all of its taxable and tax-exempt
    income, including any net realized gain on investments. Accordingly, no
    provision for federal income or excise tax is necessary. At September 30,
    1997, the Fund, for federal income tax purposes had a capital loss carryover
    of $103,026,858 which will reduce the taxable income arising from future net
    realized gains on investments, if any, to the extent permitted by the
    Internal Revenue Code, and thus will reduce the amount of the distributions
    to shareholders which would otherwise be necessary to relieve the Fund of
    any liability for federal income or excise tax. A portion of such capital
    loss carryovers were acquired through the Fund Reorganization (see Note 8)
    and may be subject to certain limitations. Such capital loss carryover will
    expire on September 30, 2002 ($599,716), September 30, 2003 ($8,244,733),
    September 30, 2004 ($86,936,357) and September 30, 2005 ($7,246,052).
    Additionally, net capital losses of $525,811 attributable to security
    transactions incurred after October 31, 1996, are treated as arising on the
    first day of the Fund's current taxable year. Dividends paid by the Fund
    from net tax-exempt interest on municipal bonds allocated from the Portfolio
    are not includable by shareholders as gross income for federal income tax
    purposes because the Fund and Portfolio intend to meet certain requirements
    of the Internal Revenue Code applicable to regulated investment companies
    which will enable the Fund to pay exempt-interest dividends. The portion of
    such interest, if any, earned on private activity bonds issued after August
    7, 1986, may be considered a tax preference item to shareholders.

    D Deferred Organization Expenses -- Costs incurred by the Fund in connection
    with its organization, including registration costs, are being amortized on
    the straight-line basis over five years.

    E Use of Estimates -- The preparation of financial statements in conformity
    with generally accepted accounting principles requires management to make
    estimates and assumptions that affect the reported amounts of assets and
    liabilities at the date of the financial statements and the reported amounts
    of revenue and expense during the reporting period. Actual results could
    differ from those estimates.

    F Other -- Investment transactions are accounted for on a trade-date basis.

                                       6
<PAGE>
 
Eaton Vance National Municipals Fund as of March 31, 1998 

NOTES TO FINANCIAL STATEMENTS (Unaudited) CONT'D


    G Expense Reduction -- Investors Bank & Trust Company (IBT) serves as
    custodian to the Fund and the Portfolio. Pursuant to the respective
    custodian agreements, IBT receives a fee reduced by credits which are
    determined based on the average daily cash balances the Fund or the
    Portfolio maintains with IBT. All significant credit balances used to reduce
    the Fund's custodian fees are reported as a reduction of operating expenses
    on the Statement of Operations.

    H Interim Financial Information -- The interim financial statements relating
    to March 31, 1998 and the six months then ended have not been audited by
    independent certified public accountants, but in the opinion of the Fund's
    management reflect all adjustments, consisting only of normal recurring
    adjustments, necessary for the fair presentation of the financial
    statements.


  2 Distributions to Shareholders
    ----------------------------------------------------------------------------
    The net income of the Fund is determined daily and substantially all of the
    net income so determined is declared as a dividend to shareholders of record
    at the time of declaration. Distributions are paid monthly. Distributions of
    allocated realized gains, if any, are made at least annually. Shareholders
    may reinvest capital gain distributions in additional shares of the Fund at
    the net asset value as of the ex-dividend date. Distributions are paid in
    the form of additional shares or, at the election of the shareholder, in
    cash. The Fund distinguishes between distributions on a tax basis and a
    financial reporting basis. Generally accepted accounting principles require
    that only distributions in excess of tax basis earnings and profits be
    reported in the financial statements as a return of capital. Differences in
    the recognition or classification of income between the financial statements
    and tax earnings and profits which result in over-distributions for
    financial statement purposes are classified as distributions in excess of
    net investment income or accumulated net realized gains. Permanent
    differences between book and tax accounting relating to distributions are
    reclassified to paid-in capital.


  3 Shares of Beneficial Interest
    ----------------------------------------------------------------------------
    The Fund's Declaration of Trust permits the Trustees to issue an unlimited
    number of full and fractional shares of beneficial interest (without par
    value). Such shares may be issued in a number of different classes.
    Transactions in Fund shares were as follows:

<TABLE> 
<CAPTION> 
                                                            Six Months Ended
                                                            March 31, 1998
Class A                                                     (Unaudited)
- ------------------------------------------------------------------------------------
<S>                                                               <C>
Sales                                                               3,280,180

Issued to shareholders electing to
   receive payment of distribution in Fundshares                       77,853

Redemptions                                                          (382,145)

Issued to EV Traditional National Municipals
   Fund Shareholders                                                4,389,424
- ------------------------------------------------------------------------------------
Net increase                                                        7,365,312
- ------------------------------------------------------------------------------------

                                   Six Months Ended    
                                   March 31, 1998            Year Ended             
Class B                            (Unaudited)              September 30, 1997
- ------------------------------------------------------------------------------------
Sales                                    11,729,641                22,677,891
                                  
Issued to shareholders
   electing to receive
   payment of distribution 
   in Fund shares                         1,911,067                 4,179,698

Redemptions                             (15,264,339)              (45,329,984)
- ------------------------------------------------------------------------------------
Net decrease                             (1,623,631)              (18,472,395)
- ------------------------------------------------------------------------------------

                                                            Six Months Ended
                                                            March 31, 1998
Class C                                                     (Unaudited)
- ------------------------------------------------------------------------------------
Sales                                                               1,585,141

Issued to shareholders electing to receive
   payment of distribution in Fund shares                             125,374
                                                                           
Redemptions                                                        (1,310,531)

Issued to EV Classic National Municipals
   Fund Shareholders                                                8,268,063
- ------------------------------------------------------------------------------------
Net increase                                                        8,668,047
- ------------------------------------------------------------------------------------
</TABLE> 

4   Investment Adviser Fee and Other Transactions with Affiliates
- -------------------------------------------------------------------------------
    Eaton Vance Management (EVM) serves as the administrator of the Fund, but
    receives no compensation.

                                       7
<PAGE>
 
Eaton Vance National Municipals Fund as of March 31, 1998 

NOTES TO FINANCIAL STATEMENTS (Unaudited) CONT'D

    The Portfolio has engaged Boston Management and Research (BMR), a subsidiary
    of EVM, to render investment advisory services. See Note 2 of the
    Portfolio's Notes to Financial Statements which are included elsewhere in
    this report. Except as to Trustees of the Fund and the Portfolio who are not
    members of EVM's of BMR's organization, officers and Trustees receive
    remuneration for their services to the Fund out of the investment adviser
    fee earned by BMR. Eaton Vance Distributors, Inc. (EVD), a subsidiary of EVM
    and the Fund's principal underwriter, received $22,865 as its portion of the
    sales charge on sales of Class A shares for the six months ended March 31,
    1998.

    Certain officers and Trustees of the Fund and of the Portfolio are officers
    and/or directors/trustees of the above organizations.


5   Distribution Plan
    ----------------------------------------------------------------------------
    The Fund has adopted distribution plans (Class B Plan and Class C Plan, the
    Plans) pursuant to Rule 12b-1 under the Investment Company Act of 1940. The
    Plans require the Fund to pay the Principal Underwriter, Eaton Vance
    Distributors, Inc. (EVD) amounts equal to 1/365 of 0.75% of the Fund's
    average daily net assets attributable to Class B and Class C shares for
    providing ongoing distribution services and facilities to the Fund. The Fund
    will automatically discontinue payments to EVD during any period in which
    there are no outstanding Uncovered Distribution Charges, which are
    equivalent to the sum of (i) 5% and 6.25% of the aggregate amount received
    by the Fund for the Class B and Class C shares sold, respectively, plus (ii)
    distribution fees calculated by applying the rate of 1% over the prevailing
    prime rate to the outstanding balance of Uncovered Distribution Charges of
    EVD of each respective class reduced by the aggregate amount of contingent
    deferred sales charges (see Note 6) and daily amounts theretofore paid to
    EVD by each respective class. The Fund paid or accrued $7,719,156 and
    $315,759 for Class B, and Class C shares, respectively, to or payable to EVD
    for the six months ended March 31, 1998, representing 0.75% (annualized) of
    the average daily net assets for Class B and Class C shares. At March 31,
    1998, the amount of Uncovered Distribution Charges EVD calculated under the
    Plans was approximately $18,911,000 and $8,210,000 for Class B and Class C
    shares, respectively.

    In addition, the Plans authorize the Fund to make payments of service fees
    to the Principal Underwriter, Authorized Firms and other persons in amounts
    not exceeding 0.25% of the Fund's average daily net assets attributable to
    Class A, Class B, and Class C shares for each fiscal year. The Trustees have
    initially implemented the Plans by authorizing the Fund to make quarterly
    payments of service fees to the Principal Underwriter and Authorized Firms
    in amounts not expected to exceed 0.25% per annum of the Fund's average
    daily net assets attributable to Class A, Class B and Class C shares based
    on the value of Fund shares sold by such persons and remaining outstanding
    for at least one year. Service fee payments will be made for personal
    services and/or the maintenance of shareholder accounts. Service fees are
    separate and distinct from the sales commissions and distribution fees
    payable by the Fund to EVD, and, as such are not subject to automatic
    discontinuance when there are no outstanding Uncovered Distribution Charges
    of EVD. Service fee payments for the six months ended March 31, 1998
    amounted to $59,954, $2,470,130, and $105,253 for Class A, Class B, and
    Class C shares, respectively.


6   Contingent Deferred Sales Charge
    ----------------------------------------------------------------------------
    A contingent deferred sales charge (CDSC) is imposed on any redemption of
    Class B shares made within six years of purchase. A CDSC is imposed on
    certain Class C shares redeemed within one year of purchase. Generally, the
    CDSC is based upon the lower of the net asset value at date of redemption or
    date of purchase. No charge is levied on shares acquired by reinvestment of
    dividends or capital gains distributions. Class B CDSC is imposed at
    declining rates that begin at 5% in the case of redemptions in the first and
    second year after purchase, declining one percentage point each subsequent
    year. Class C shares will be subject to a 1% CDSC if redeemed within one
    year of purchase. No CDSC is levied on shares which have been sold to EVM or
    its affiliates or to their respective employees or clients. CDSC charges are
    paid to EVD to reduce the amount of Uncovered Distribution Charges
    calculated under each Fund's Distribution Plan (see Note 5). CDSC charges
    received when no Uncovered Distribution Charges exist will be credited to
    the Fund. EVD received approximately $1,484,000 and $5,000 of CDSC paid by
    shareholders for Class B shares and Class C shares, respectively, for the
    six months ended March 31, 1998.


7   Investment Transactions
    ----------------------------------------------------------------------------
    Increases and decreases in the Fund's investment in the National Municipals
    Portfolio aggregated $179,709,899 and $233,229,737, respectively, for the
    six months ended March 31, 1998.


                                       8
<PAGE>
 
Eaton Vance National Municipals Fund as of March 31, 1998 

NOTES TO FINANCIAL STATEMENTS (Unaudited) CONT'D



8   Transfer of Net Assets
    ----------------------------------------------------------------------------
    On October 1, 1997, the EV Marathon National Municipals Fund acquired the
    net assets of the EV Traditional National Municipals Fund and EV Classic
    National Municipals Fund pursuant to an Agreement and Plan of Reorganization
    dated June 23, 1997. In accordance with the agreement, EV Marathon National
    Municipals Fund, at the closing, issued 4,389,424 Class A shares and
    8,268,063 Class C shares of the Fund having an aggregate value of
    $49,435,356 and $82,777,583, respectively. As a result, the Fund issued one
    Class A share and one Class C share for each share of EV Traditional
    National Municipals Fund and EV Classic National Municipals Fund,
    respectively. The transaction was structured for tax purposes to qualify as
    a tax free reorganization under the Internal Revenue Code. The EV
    Traditional National Municipals Fund's and EV Classic National Municipals
    Fund's net assets at the date of the transaction were $49,435,356 and
    $82,777,583, respectively, including $3,854,847 and $6,655,724 of unrealized
    appreciation. Directly after the merger, the combined net assets of the
    Eaton Vance National Municipals Fund (formerly "EV Marathon National
    Municipals Fund") were $2,172,838,927 with a net asset value of $11.26,
    $10.53 and $10.01 for Class A, Class B and Class C, respectively.


9   Name Change
    --------------------------------------
    Effective October 1, 1997, the EV Marathon National Municipals Fund changed
    its name to Eaton Vance National Municipals Fund.

                                       9
<PAGE>

National Municipals Portfolio as of March 31, 1998

PORTFOLIO OF INVESTMENTS (Unaudited)



Tax-Exempt Investments -- 100.0%
                                                                               
Ratings (Unaudited)     Principal
- --------------------    Amount                                                 
             Standard   (000's                                                 
Moody's      & Poor's   omitted)    Security                    Value    
- -----------------------------------------------------------------------------
Assisted Living -- 5.0%                                                        
- -----------------------------------------------------------------------------
 NR          NR         $ 6,035     Arizona Health Facilities
                                    Authority, (Care                            
                                    Institute, Inc.-Mesa),   
                                    7.625%, 1/1/26              $   6,287,444
 NR          NR          17,070     Bell County, TX, Health                  
                                    Facilities, (Care                           
                                    Institute, Inc., Texas),                    
                                    9.00%, 11/1/24                 19,932,127 
 NR          NR           5,000     Chester, PA, IDA, (Senior                   
                                    Life Choice of Paoli,                       
                                    L.P.), 8.05%, 1/1/24            5,557,350 
 NR          NR           3,060     Chester, PA, IDA, (Senior                   
                                    Life-Choice of Kimberton)                   
                                    (AMT), 8.50%, 9/1/25            3,505,781 
 NR          NR           5,000     Delaware, PA, IDA, Glen                     
                                    Riddle, (AMT), 8.625%,                      
                                    9/1/25                          5,764,950 
 NR          NR          10,000     Glen Cove, NY, IDA,                         
                                    (Regency at Glen Cove),                     
                                    9.50%, 7/1/12                  10,000,000
 NR          NR          15,000     Illinois Development                       
                                    Finance Authority (Care                    
                                    Institute, Inc.-Illinois),                 
                                    7.80%, 6/1/25                  16,648,800
 NR          NR           4,605     New Jersey EDA, (Chelsea                   
                                    at East Brunswick), (AMT),                 
                                    8.25%, 10/1/20                  5,125,641
 NR          NR          10,000     New Jersey EDA, (Forsgate),
                                    (AMT), 8.625%, 6/1/25          11,527,900
 NR          NR           5,000     North Syracuse Village,                    
                                    Housing Authority (AJM                     
                                    Senior Housing, Inc.,                      
                                    Janus Park), 8.00%, 6/1/24      5,206,450
 NR          NR           7,915     Roseville, MN, Elder Care                
                                    Inc.-Roseville), 7.75%,                  
                                    11/1/23                         8,268,088  
 NR          NR          12,430     St. Paul, MN, Housing and                
                                    Redevelopment, (Care                     
                                    Institute, Inc.-Highland),               
                                    8.75%, 11/1/24                 14,551,677  
- -----------------------------------------------------------------------------
                                                                $ 112,376,208
- -----------------------------------------------------------------------------

Cogeneration -- 4.7%                                                         
- -----------------------------------------------------------------------------
 NR          NR         $20,250     Maryland Energy, AES                     
                                    Warrior Run, (AMT), 7.40%,    
                                    9/1/19                      $  22,485,600
 NR          BB+         30,775     New Jersey EDA, (Vineland  
                                    Cogeneration) (AMT),       
                                    7.875%, 6/1/19                 33,884,814  
 NR          NR          12,950     Palm Beach County, FL,                   
                                    Osceola Power Project,                   
                                    (AMT), 6.95%, 1/1/22/(1)/      10,230,500  
 NR          BBB-         6,100     Pennsylvania EDA,                        
                                    (Northampton Generating
                                    Project), (AMT),                
                                    6.50%, 1/1/13                   6,512,360
 NR          BBB-        18,450     Pennsylvania EDA,
                                    (Northampton Generating
                                    Project), (AMT),
                                    6.60%, 1/1/19                  19,744,821
 NR          NR           5,000     Pennsylvania EDA,
                                    (Northampton Generating
                                    Project), Junior Liens
                                    (AMT), 6.95%, 1/1/21            5,301,450
 NR          NR           7,000     Pennsylvania EDA,
                                    (Northampton Generating
                                    Project), Junior Liens,
                                    (AMT), 6.875%, 1/1/11           7,412,090
- -----------------------------------------------------------------------------
                                                                $ 105,571,635
- -----------------------------------------------------------------------------

Colleges and Universities -- 0.8%
- -----------------------------------------------------------------------------
 Aaa         AAA        $12,390     California Educational
                                    Facilities Authority,
                                    (Stanford University),        
                                    5.35%, 6/1/27               $  12,610,914 
 NR          BBB-         1,250     Massachusetts Health and
                                    Educational Facilities
                                    (Nichols College), 7.00%,       
                                    10/1/20                         1,342,050  
 Ba1         NR           4,300     New Hampshire Higher
                                    Educational and Health
                                    (Franklin Pierce Law
                                    Center), 7.50%, 7/1/22          4,607,665
- -----------------------------------------------------------------------------
                                                                $  18,560,629
- -----------------------------------------------------------------------------

Electric Utilities -- 1.3%
- -----------------------------------------------------------------------------
 B2          B          $14,000     Apache County, AZ, IDA,
                                    (Tuscon Electric Power
                                    Co.), 5.85%, 3/1/28         $  14,179,200
 A1          A+           9,500     Intermountain Power
                                    Agency, UT, 5.00%, 7/1/23       9,079,530

                       See notes to financial statements

                                      10
<PAGE>

National Municipals Portfolio as of March 31, 1998

PORTFOLIO OF INVESTMENTS (Unaudited) CONT'D



Ratings (Unaudited)      
- ----------------------  Principal
                        Amount
            Standard    (000's
Moody's     & Poor's    omitted)    Security                      Value
- --------------------------------------------------------------------------------

Electric Utilities (continued)
- --------------------------------------------------------------------------------
 NR          NR      $    5,000     West Feliciana, LA, Gulf
                                    States Utilities, (AMT),
                                    9.00%, 5/1/15                 $   5,551,400
- --------------------------------------------------------------------------------
                                                                  $  28,810,130
- --------------------------------------------------------------------------------

Escrowed / Prerefunded -- 19.7%
- --------------------------------------------------------------------------------
 Aaa         AAA     $   45,000     Bakersfield, CA,
                                    Bakersfield Assisted
                                    Living Center,                
                                    0.00%, 4/15/21                $  13,363,650
 NR          NR           2,200     Bexar County, TX, Health
                                    Facilities (St. Luke's
                                    Lutheran), 7.00%, 5/1/21          2,778,248
 NR          AAA        177,055     Colorado Health Facilities
                                    Authority, Retirement
                                    Housing (Liberty Heights),
                                    0.00%, 7/15/24                   43,964,527
 Aa2         NR           5,000     Colorado Housing and
                                    Finance Authority,
                                    Retirement Housing
                                    (Liberty Heights), (AMT),         
                                    7.55%, 11/1/27                    5,672,200
 Aaa         NR         225,500     Dawson Ridge, Metropolitan
                                    District #1, CO,
                                    0.00%, 10/1/22                   62,003,479
 Aaa         NR          30,000     Dawson Ridge, Metropolitan
                                    District #1, Douglas
                                    County, CO, 0.00%, 10/1/22        8,248,800
 Aaa         BBB          1,660     Denver, CO, City and
                                    County Airport Revenue,
                                    (AMT), 7.00%, 11/15/25            1,817,202
 Aaa         BBB            990     Denver, CO, City and
                                    County Airport Revenue,
                                    (AMT), 7.50%, 11/15/23            1,183,535
 Baa2        AAA          5,000     Detroit, MI, Unlimited
                                    Tax, 8.70%, 4/1/10                5,551,600
 NR          NR           7,000     Florida State (Mid-Bay
                                    Bridge Authority),
                                    6.875%, 10/1/22                   8,646,050
 NR          NR           4,470     Hazelton Luzerne, PA
                                    (Saint Joseph Medical
                                    Center), 8.375%, 7/1/12           5,312,327
 NR          AAA        101,555     Illinois Development
                                    Finance Authority (Regency
                                    Park), 0.00%, 7/15/23            26,134,164
 NR          AAA         60,360     Illinois Development
                                    Finance Authority,
                                    (Regency Park), 0.00%            
                                    7/15/25                          13,841,755
 NR          NR           4,650     Illinois Health and
                                    Educational Facilities
                                    Authority, Chicago
                                    Osteopathic Health                
                                    Systems, 7.125%, 5/15/11          5,484,071
 NR          NR           4,500     Illinois Health and
                                    Educational Facilities
                                    Authority, Chicago
                                    Osteopathic Health                
                                    Systems, 7.25%, 5/15/22           5,600,430
 NR          AAA         12,340     Louisiana Public
                                    Facilities Authority
                                    (Southern Baptist 
                                    Hospitals, Inc.),        
                                    8.00%, 5/15/12                   15,164,996
 Aaa         AAA          9,700     Louisville, KY (Alliant
                                    Health System, Inc.)
                                    (MBIA), Variable Rate,           
                                    10/1/14/(2)/                     11,603,625
 Baa1        BBB-        10,000     Maricopa County, AZ (Sun
                                    Health Corporation),
                                    8.125%, 4/1/12                   11,590,800
 NR          NR           5,675     Maricopa County, AZ,
                                    IDA, Multi-family,
                                    6.625%, 1/1/27                    6,672,325
 NR          NR           1,000     Maricopa County, AZ, IDA,
                                    Multifamily, 6.45%, 1/1/17        1,129,990
 NR          NR           5,835     Massachusetts Health and
                                    Educational Facilities
                                    Authority, (1st Mortgage -
                                    Fairview Extended Care),
                                    10.125%, 1/1/11                   6,888,393
 NR          NR           4,450     Mille Lacs Capital
                                    Improvements, MN (Mille
                                    Lacs Band of Chippewa
                                    Indians), 9.25%, 11/1/12          5,521,427
 Aaa         NR         100,000     Mississippi Housing
                                    Finance Corp., Single
                                    Family, (AMT), 0.00%,            
                                    6/1/15                           41,669,000
 Aaa         AAA         10,000     New Hampshire Higher
                                    Educational and Health
                                    Facilities
                                    (Riverwoods at Exeter),          
                                    9.00%, 3/1/23                    12,358,800
 NR          NR           3,500     New Jersey EDA (Cadbury
                                    Corp.), 7.50%, 7/1/21             3,729,985
 A2          A-           5,035     New York, NY, Municipal
                                    Water Finance Authority,
                                    6.25%, 6/15/21                    5,363,584
 Aaa         NR           6,120     North Salt Lake
                                    Municipal Building
                                    Authority, Davis County,
                                    UT.,                              
                                    8.625%, 12/1/17                   7,423,560

See notes to financial statements

                                      11
<PAGE>

National Municipals Portfolio as of March 31, 1998

PORTFOLIO OF INVESTMENTS (Unaudited) CONT'D



Ratings (Unaudited)                                                  
- --------------------    Principal                                              
                        Amount    
            Standard    (000's                                                 
Moody's     & Poor's    omitted)        Security                      Value    
- --------------------------------------------------------------------------------

Escrowed/Prerefunded (continued)
- --------------------------------------------------------------------------------
 Baa1        AAA        $ 4,000     Philadelphia, PA Municipal
                                    Water Finance Authority,
                                    7.00%, 8/1/18                 $   4,358,320
 NR          NR           3,500     Philadelphia, PA (The
                                    Philadelphia Protestant
                                    Home Project), 8.625%,     
                                    7/1/21                            4,023,810
 NR          NR           5,000     Rhode Island Health and
                                    Education Building (Steere
                                    House), 8.25%, 7/1/15             5,541,000
 Aaa         AAA         15,000     San Joaquin Hills
                                    Transportation Corrider
                                    Agency, CA, Toll Roads,   
                                    0.00%, 1/1/25                     3,874,350
 Aaa         NR          46,210     San Joaquin Hills
                                    Transportation Corridor
                                    Agency, CA, Toll Roads,  
                                    0.00%, 1/1/20                    15,372,219
 Aaa         NR          72,685     San Joaquin Hills
                                    Transportation Corridor
                                    Agency, CA, Toll Roads,  
                                    0.00%, 1/1/21                    22,985,904
 Aaa         NR          45,045     San Joaquin Hills
                                    Transportation Corridor
                                    Agency, CA, Toll Roads,    
                                    0.00%, 1/1/23                    12,873,861
 NR          AAA          4,500     Scranton-Lackawanna, PA,
                                    Health and Welfare
                                    Authority (Moses Taylor
                                    Hospital), 8.50%, 7/1/20          5,171,445
 Aaa         AAA         19,165     Texas Turnpike Authority
                                    (Houston Ship Channel
                                    Bridge), 12.625%, 1/1/20/(3)/    25,684,166
 Aaa         AAA          2,145     Washington Public Power
                                    Supply System, Nuclear
                                    Project Number 2 (MBIA),
                                    14.375%, 7/1/01                   2,547,466
- --------------------------------------------------------------------------------
                                                                  $ 441,151,064
- --------------------------------------------------------------------------------

General Obligations -- 2.0%
- --------------------------------------------------------------------------------
 Aa2         NR         $ 5,250     Lakeville, MN, Independent
                                    School District,
                                    5.125%, 2/1/20                $   5,246,220
 Aa2         NR           7,500     Lakeville, MN, Independent
                                    School District,
                                    5.125%, 2/1/22                    7,484,100
 A3          BBB+        15,790     New York City, NY,
                                    5.25%, 8/1/16                    15,715,313
 A3          BBB+        17,000     New York City, NY,
                                    5.25%, 8/1/17                    16,917,040
- --------------------------------------------------------------------------------
                                                                  $  45,362,673
- --------------------------------------------------------------------------------

Hospitals -- 8.3%
- --------------------------------------------------------------------------------
 NR          BBB        $ 6,500     Arizona Health Facilities
                                    (Phoenix Memorial
                                    Hospital), 8.20%, 6/1/21      $   7,065,565
 NR          NR           2,395     Berlin, MD (Atlantic
                                    General), 8.375%, 6/1/22          2,613,232
 Baa         NR          10,180     Chaves County, NM (Eastern
                                    New Mexico Medical
                                    Center), 7.25%, 12/1/22          11,247,678
 NR          BBB-         3,000     Colorado Health Facilities
                                    Authority (National Jewish
                                    Center For Immunology),
                                    6.875%, 2/15/12                   3,182,370
 NR          BBB-         5,015     Colorado Health Facilities
                                    Authority (National Jewish
                                    Center For Immunology),
                                    7.10%, 2/15/22                    5,348,748
 Baa         BBB         32,000     Colorado Health Facilities
                                    Authority (Rocky Mountain
                                    Adventist Healthcare),
                                    6.625%, 2/1/22                   34,451,840
 Baa1        NR           4,000     Crossville, TN, Health and
                                    Educational Financing
                                    Authority (Cumberland
                                    Medical Center), 6.75%,     
                                    11/1/12                           4,313,800
 A3          BBB+         6,000     District of Columbia
                                    (Washington Hospital
                                    Center Issue - Medlantic
                                    Healthcare Group, Inc.),
                                    7.125%, 8/15/19                   6,766,980
 NR          A-           5,000     Dubuque, IA (Finley
                                    Hospital), 6.875%, 1/1/12         5,415,650
 NR          NR           5,350     Grove City Area Hospital
                                    Authority, PA (United
                                    Community Hospital),
                                    8.125%, 7/1/12                    5,390,928
 NR          BBB-         4,000     Hawaii Department of
                                    Budget and Finance
                                    (Wahiawa General Hospital),
                                    7.50%, 7/1/12                     4,403,080
 Baa1        NR           1,000     Illinois Health Facilities
                                    Authority (Holy Cross
                                    Hospital), 6.70%, 3/1/14          1,094,010
 Baa1        NR           2,650     Illinois Health Facilities
                                    Authority (Holy Cross
                                    Hospital), 6.75%, 3/1/24          2,905,831

                       See notes to financial statements

                                      12
<PAGE>

National Municipals Portfolio as of March 31, 1998

PORTFOLIO OF INVESTMENTS (Unaudited) CONT'D


Ratings (Unaudited) 
- --------------------    Principal                                               
                        Amount                                                 
            Standard    (000's                                                 
Moody's     & Poor's    omitted)        Security                      Value    
- --------------------------------------------------------------------------------

Hospitals (continued)
- --------------------------------------------------------------------------------
 Baa2        NR         $ 4,500     Indiana Health Facility
                                    Financing Authority
                                    (Memorial Hospital and
                                    Health Care Center),    
                                    7.40%, 3/1/22                 $   4,890,825 
 A3          NR           3,750     Louisiana Public
                                    Facilities Authority
                                    (Woman's Hospital Foundation),  
                                    7.25%, 10/1/22                    4,270,950
 NR          BBB          8,250     Louisiana Public
                                    Facilities Authority,
                                    General Health Systems
                                    Project, 6.80%, 11/1/16           9,148,013
 Baa         NR           2,000     Marshall County, AL
                                    (Guntersville-Arab Medical
                                    Center), 7.00%, 10/1/09           2,166,380
 Baa         NR           2,000     Marshall County, AL
                                    (Guntersville-Arab Medical
                                    Center), 7.00%, 10/1/13           2,173,960
 Baa3        NR           2,500     Massachusetts HEFA
                                    (Milford-Whitinsville
                                    Hospital), 7.75%, 7/15/17         2,883,950
 Baa3        NR           5,000     Mississippi Hospital
                                    Equipment and Facilities
                                    Authority (Magnolia
                                    Hospital), 7.375%, 10/1/21        5,390,800
 A           BBB+        10,000     Philadelphia, PA (Albert
                                    Eistein Medical Center),
                                    7.00%, 10/1/21                   10,823,300
 B2          BB           9,000     Philadelphia, PA (Graduate
                                    Health System),
                                    6.625%, 7/1/21                    9,215,640
 B2          BB           2,250     Philadelphia, PA (Graduate
                                    Health System),
                                    7.25%, 7/1/18                     2,391,030
 Baa3        NR           2,000     Prince George's County, MD
                                    (Greater SouthEast
                                    Healthcare System),                         
                                    6.375%, 1/1/23                    2,072,280 
 Baa1        BBB+        10,000     Randolph County Building
                                    Commission, WV (Davis
                                    Memorial Hospital),
                                    7.65%, 11/1/21                   10,989,100
 NR          AAA          8,000     Scranton-Lackawanna Health
                                    and Welfare Authority, PA
                                    (Moses Taylor Hospital),
                                    8.25%, 7/1/09                     9,117,680
 Baa2        BBB          8,000     South Dakota Health and
                                    Educational Finance
                                    Authority (Prarie Lakes
                                    Health Care System),                        
                                    7.25%, 4/1/22                     9,171,280 
 NR          NR           4,855     Winslow, AZ, Industrial
                                    Development Authority
                                    (Winslow Memorial
                                    Hospital), 9.50%, 6/1/22          5,606,942
- --------------------------------------------------------------------------------
                                                                  $ 184,511,842
- --------------------------------------------------------------------------------

Housing -- 2.2%
- --------------------------------------------------------------------------------
 Aa          AA-        $ 9,450     California Housing Finance
                                    Agency (AMT), Residual
                                    Interest Bonds, Variable
                                    Rate, 8/1/23/(2)/             $  10,773,000
 NR          NR           9,295     Lake Creek Affordable
                                    Housing Corp., CO,
                                    Multifamily, 8.00%, 12/1/23       9,797,488
 NR          NR           8,000     Los Angeles County Housing
                                    Authority, CA, Multifamily
                                    Housing (Corporate Fund
                                    for Housing), 10.50%, 12/1/29     7,407,760
 NR          NR           1,500     Maricopa County, AZ, IDA,
                                    Multifamily (National
                                    Health Facilities II
                                    Project), 6.375%, 1/1/19          1,492,125
 NR          NR           2,185     Minneapolis, MN, Community
                                    Development, Multifamily
                                    (Lindsay Brothers),
                                    1.50%, 12/1/07                    1,206,535
 NR          NR           3,180     Minneapolis, MN, Community
                                    Development, Multifamily
                                    (Lindsay Brothers),
                                    9.50%, 12/1/07                    3,462,734
 NR          NR           8,635     North Miami, FL, Health
                                    Care Facilities (The
                                    Imperial Club), 9.25%,                      
                                    1/1/13                            9,884,225 
 NR          NR           4,000     North Miami, FL, Health
                                    Care Facilities (The
                                    Imperial Club), 10.00%,                     
                                    1/1/13                            3,974,480 
- --------------------------------------------------------------------------------
                                                                  $  47,998,347
- --------------------------------------------------------------------------------

                       See notes to financial statements

                                      13
<PAGE>

National Municipals Portfolio  as of March 31, 1998

PORTFOLIO OF INVESTMENTS (Unaudited) CONT'D


Ratings (Unaudited)     
- ---------------------   Principal 
                        Amount   
            Standard    (000's   
Moody's     & Poor's    omitted)    Security                      Value
- --------------------------------------------------------------------------------

Industrial Development Revenue / 
Pollution Control Revenue -- 13.1%
- --------------------------------------------------------------------------------
 NR          NR         $ 7,500     Austin, TX (Cargoport
                                    Development LLC) (AMT),
                                    8.30%, 10/1/21                $   8,350,575
 NR          NR           2,000     California Pollution
                                    Control Financing
                                    Authority, (Laidlaw
                                    Environmental), (AMT),            
                                    6.70%, 7/1/07                     2,107,760
 NR          BB-          2,000     Camden County, NJ,
                                    (Holt Hauling), (AMT),
                                    9.875%, 1/1/21                    2,547,700
 Baa2        BBB+         6,050     Carbon County, UT (Laidlaw
                                    Enviormental), (AMT),
                                    7.50%, 2/1/10                     7,022,417
 Baa2        BBB-        28,000     Chicago, IL, O'Hare
                                    International (American
                                    Airlines), 7.875%, 11/1/25       30,705,920
 Baa2        BBB-        20,275     Chicago, IL, O'Hare
                                    International, (American
                                    Airlines), 8.20%, 12/1/24        24,827,549
 NR          NR           6,000     Clark County, NV,
                                    (Nevada Power), (AMT),
                                    7.80%, 10/1/30/(4)/               6,285,000
 Baa1        BBB         24,000     Courtland, AL (Champion
                                    International), (AMT),
                                    7.00%, 6/1/22                    26,249,760
 Baa2        BBB-        41,000     Dallas-Fort Worth, TX,
                                    International Airport
                                    Facility (American
                                    Airlines), 7.25%, 11/1/30        45,926,560
 Baa1        BBB         11,480     Gulf Coast Waste Disposal,
                                    TX (Champion
                                    International), (AMT),           
                                    6.875%, 12/1/28                  12,731,550
 NR          NR           5,928     Gwinnett County, GA
                                    (Plastics/Packaging, Inc.)
                                    (AMT), 9.00%, 5/1/13/(1)/         3,141,612
 NR          NR           6,500     Kimball, NE, EDA, (Clean
                                    Harbors Inc.) (AMT),
                                    10.75%, 9/1/26                    7,146,945
 NR          NR           1,900     Los Angeles International
                                    Airport (Continental
                                    Airlines) (AMT), 9.00%,           
                                    8/1/08                            1,963,308
 Baa1        BBB         10,000     Maine Finance Authority,
                                    (Great Northern Paper,
                                    Inc., Project - Bowater
                                    Inc.) (AMT), 7.75%, 10/1/22      11,266,100
 NR          BBB-         5,000     Maine Solid Waste Disposal
                                    (Boise Cascade) (AMT),
                                    7.90%, 6/1/15                     5,387,150
 Baa1        BBB          5,000     McMinn County, TN
                                    (Calhoun Newsprint Co.
                                    Project - Bowater Inc.), 
                                    (AMT), 7.40%, 12/1/22             5,592,900
 NR          NR          10,000     Michigan Strategic
                                    (S.D. Warren Co.),
                                    7.375%, 1/15/22                  11,129,400
 NR          NR          15,000     Michigan Strategic
                                    (S.D. Warren Co.),
                                    7.375%, 1/15/22                  16,694,100
 NR          NR           3,980     Middleboro, MA (Read
                                    Corp.), 9.50%, 10/1/10            4,275,236
 NR          NR          17,000     New Jersey EDA, (Holt
                                    Hauling), 7.75%, 3/1/27          19,185,520
 NR          NR           1,500     New Jersey EDA, (Holt
                                    Hauling), 7.90%, 3/1/27           1,714,290
 NR          NR           1,000     Ohio Solid Waste Revenue,
                                    (Republic Engineered
                                    Steels Inc.), (AMT),              
                                    9.00%, 6/1/21                     1,078,220
 Baa2        BBB-         7,500     Pennsylvania, IDA,
                                    (MacMillan Bloedel) (AMT),
                                    7.60%, 12/1/20                    8,422,425
 Baa3        BBB         10,000     Pennsylvania, IDA, (Sun
                                    Company), (AMT),
                                    7.60%, 12/1/24                   11,716,800
 B1          B            2,585     Riverdale Village, IL,
                                    ACME Metals, Inc., (AMT),
                                    7.90%, 4/1/24                     2,898,457
 B1          B            2,000     Riverdale Village, IL,
                                    ACME Metals, Inc., (AMT),
                                    7.95%, 4/1/25                     2,248,780
 NR          NR           2,505     Savannah, GA
                                    (Intercat-Savannah, Inc.)
                                    (AMT), 9.75%, 7/1/10              2,702,469
 NR          NR           3,910     Savannah, GA, EDA
                                    (Intercat-Savannah, Inc.),
                                    (AMT), 9.00%, 1/1/15              4,333,531
 NR          NR           2,000     Skowhegan, ME, (S. D.
                                    Warren Co.), (AMT),
                                    6.65%, 10/15/15                   2,140,120

                       See notes to financial statements

                                      14
<PAGE>
 
National Municipals Portfolio as of March 31, 1998

PORTFOLIO OF INVESTMENTS (Unaudited) CONT'D


Ratings (Unaudited) 
- ------------------- Principal
                    Amount                                                      
          Standard  (000's                                                      
Moody's   & Poor's  omitted)      Security                      Value     
- --------------------------------------------------------------------------------

Industrial Development Revenue / 
Pollution Control Revenue (continued)
- --------------------------------------------------------------------------------
NR        NR        $  3,500     Toole County, UT,
                                 Pollution Control
                                 Revenue, (AMT),           
                                 7.55%, 7/1/27                  $   3,884,405
- --------------------------------------------------------------------------------
                                                                $ 293,676,559
- --------------------------------------------------------------------------------

Insured-Electric Utilities -- 3.4%
- --------------------------------------------------------------------------------
 Aaa       AAA      $ 22,000     Intermountain Power
                                 Agency, UT (MBIA),        
                                 5.75%, 7/1/19                  $  23,307,460 
 Aaa       AAA        10,000     Intermountain Power          
                                 Agency, UT (MBIA),                
                                 6.00%, 7/1/16                     10,826,900 
 Aaa       AAA        10,000     Los Angeles, CA,             
                                 Department of Water          
                                 and Power (MBIA),                 
                                 5.00%, 10/15/33                    9,630,200 
 Aaa       AAA        16,500     Sacramento, CA,              
                                 Municipal Utility            
                                 District, (MBIA),                 
                                 Variable Rate,               
                                 11/15/15/(2)/                     17,716,875  
 Aaa       AAA        15,350     South Carolina Public        
                                 Services, Residual           
                                 Interest Bonds,              
                                 (FGIC), Variable                  
                                 Rate, 1/1/25/(2)/                 14,160,375  
- --------------------------------------------------------------------------------
                                                                $  75,641,810
- --------------------------------------------------------------------------------

Insured-General Obligations -- 0.9%
- --------------------------------------------------------------------------------
 Aaa       AAA      $ 21,175     Chicago, IL, (FGIC),
                                 5.25%, 1/1/28/(4)/             $  20,953,086
- --------------------------------------------------------------------------------
                                                                $  20,953,086
- --------------------------------------------------------------------------------

Insured-Hospitals -- 0.7%
- --------------------------------------------------------------------------------
 Aaa       AAA      $  8,170     Michigan Hospital
                                 Finance Authority,
                                 (Oakwood Obligation 
                                 Group), (FSA),       
                                 5.00%, 8/15/26/(4)/            $   7,789,033
 Aaa       AAA         7,000     Montgomery, PA,
                                 (Abington Memorial
                                 Hospital) (AMBAC), 
                                 Variable Rate,                     8,295,000
                                 7/5/11/(2)/
- --------------------------------------------------------------------------------
                                                                $  16,084,033
- --------------------------------------------------------------------------------

Insured-Housing -- 0.4%
- --------------------------------------------------------------------------------
 Aaa       AAA      $  7,525     SCA Multifamily
                                 Mortgage, Industrial
                                 Development Board,
                                 Hamilton County, TN,      
                                 (AMT) (FSA), 7.35%, 
                                 1/1/30                         $   8,297,065
- --------------------------------------------------------------------------------
                                                                $   8,297,065
- --------------------------------------------------------------------------------

Insured-Industrial Development Revenue / 
Pollution Control Revenue -- 0.6%
- --------------------------------------------------------------------------------
 Aaa       AAA      $ 11,950     Chicago, IL (The
                                 Peoples Gas Light and
                                 Coke Company) (AMT),
                                 (AMBAC), RIBS, Variable 
                                 Rate, 12/1/23/(2)/             $  12,681,938
- --------------------------------------------------------------------------------
                                                                $  12,681,938
- --------------------------------------------------------------------------------

Insured-Pooled Loans -- 0.3%
- --------------------------------------------------------------------------------
 Aaa       AAA      $  7,000     George L. Smith,
                                 (Georgia World
                                 Congress Center -
                                 Domed Stadium Project), 
                                 (MBIA), (AMT), 5.50%, 
                                 7/1/20/(4)/                    $   6,848,660
- --------------------------------------------------------------------------------
                                                                $   6,848,660
- --------------------------------------------------------------------------------

Insured-Special Tax Revenue -- 2.2%
- --------------------------------------------------------------------------------
 Aaa       AAA      $  9,800     Metropolitan Pier and
                                 Exposition Authority,
                                 IL, McCormick Place
                                 Expansion Project,
                                 Residual Interest
                                 Bonds, (MBIA), Variable
                                 Rate, 6/15/27/(2)/             $  11,404,750
 Aaa       AAA         3,415     Regional
                                 Transportation
                                 Authority, LA (FGIC),         
                                 0.00%, 12/1/12                     1,640,942
 Aaa       AAA        10,935     Regional
                                 Transportation
                                 Authority, LA (FGIC),         
                                 0.00%, 12/1/15                     4,407,570
 Aaa       AAA        10,000     Regional
                                 Transportation
                                 Authority, LA (FGIC),              2,909,700
                                 0.00%, 12/1/21
 Aaa       AAA        20,000     South Orange County,
                                 CA, Public Financing
                                 Authority, (FGIC), Variable
                                 Rate, 8/15/15/(2)(3)/             21,175,000
 Aaa       AAA         7,000     Utah Municipal Finance
                                 Corp., Local Government 
                                 Revenue, (FSA), 
                                 0.00%, 3/1/10                      3,949,890
 Aaa       AAA         6,000     Utah Municipal Finance
                                 Corp., Local
                                 Government Revenue,           
                                 (FSA), 0.00%, 3/1/11               3,186,480
- --------------------------------------------------------------------------------
                                                                $  48,674,332
- --------------------------------------------------------------------------------

                       See notes to financial statements

                                       15
<PAGE>
 
National Municipals Portfolio as of March 31, 1998

PORTFOLIO OF INVESTMENTS (Unaudited) CONT'D


Ratings                                                                
(Unaudited)                  
- ---------------      Principal
                     Amount   
           Standard  (000's                         
Moody's    & Poor's  omitted)    Security                       Value 
- --------------------------------------------------------------------------------

Insured-Transportation -- 5.3%
- --------------------------------------------------------------------------------
 Aaa       AAA      $ 19,000     Massachusetts State
                                 Turnpike Authority
                                 (MBIA), 5.00%, 1/1/20          $  19,111,530
 Aaa       AAA         1,000     Massachusetts State
                                 Turnpike Authority
                                 (MBIA), 5.00%, 1/1/20              1,005,870
 Aaa       AAA        41,015     Massachusetts State                   
                                 Turnpike Authority,                   
                                 (FGIC), 5.125%, 1/1/23            41,929,224
 Aaa       AAA        11,000     Massachusetts Turnpike
                                 Authority, Metropolitan 
                                 District Highway System,              
                                 (MBIA), 5.00%, 1/1/27             10,625,010
 Aaa       AAA        14,400     Metropolitan Washington DC 
                                 Airport Authority (MBIA),            
                                 Variable Rate, 4/1/21/(2)/        15,642,000
 Aaa       AAA        18,200     Mobile, AL, Airport
                                 Authority (MBIA), 6.375%, 
                                 10/1/14/(3)/                      20,147,400
 NR        AAA        10,000     Triborough Bridge and
                                 Tunnel Authority, NY,
                                 (MBIA), Variable Rate,       
                                 1/1/19/(2)/                       10,812,500
- --------------------------------------------------------------------------------
                                                                $ 119,273,534
- --------------------------------------------------------------------------------

Insured-Water and Sewer -- 2.7%
- --------------------------------------------------------------------------------
 Aaa       AAA      $ 30,395     California Water
                                 Resources, Central
                                 Valley Project,                
                                 (FGIC), 5.25%, 12/1/28          $  30,436,641
 Aaa       AAA        10,000     Detroit, MI, Sewer
                                 Revenue (FGIC), Variable          
                                 Rate, 7/1/23/(2)/                 10,900,000 
 Aaa       AAA         7,150     Harrisburg, PA, Water
                                 Revenue Bonds, Residual 
                                 Interest Bonds (FGIC), 
                                 Variable Rate, 8/11/16/(2)/        7,257,250 
 Aaa       AAA        10,000     New York, NY, Municipal Water
                                 Finance Authority, (FSA), 
                                 Variable Rate, 6/15/21/(2)/       11,337,500
- --------------------------------------------------------------------------------
                                                                $  59,931,391
- --------------------------------------------------------------------------------

Lease Revenue/
Certificates of Participation -- 0.7%
- --------------------------------------------------------------------------------
 Baa1      BBB+     $ 11,825     New York Urban
                                 Development Corp.,
                                 (Capital Facilities),          
                                 5.00%, 1/1/20                  $  11,354,483
 NR        AA-         3,500     Plymouth County, MA
                                 (Plymouth County
                                 Correctional Facility), 
                                 7.00%, 4/1/22                      3,920,840
- --------------------------------------------------------------------------------
                                                                $  15,275,323
- --------------------------------------------------------------------------------

Life Care -- 6.6%
- --------------------------------------------------------------------------------
 NR        NR       $  8,616     Albuquerque, NM, First
                                 Mortgage IDR, (La Vida
                                 Llena Retirement Center),      
                                 8.625%, 2/1/20                 $   9,092,292
 NR        NR          6,900     Albuquerque, NM, First
                                 Mortgage IDR, (La Vida
                                 Llena Retirement Center),          
                                 8.85%, 2/1/23                      7,584,618
 NR        NR          5,744     Albuquerque, NM, First
                                 Mortgage IDR, (La Vida
                                 Lllena Retirement Center),         
                                 2.25%, 2/1/23                      1,724,751
 NR        NR         10,000     Atlantic Beach, Fixed
                                 Rate Improvement, FL,
                                 (Fleet Landing Project),                    
                                 8.00%, 6/1/24                     11,221,600
 NR        NR         12,435     De Kalb County, Private 
                                 Hospital Authority, GA, 
                                 (Atlanta Incorporated),
                                 8.50%, 3/1/25                      9,326,250
 NR        NR          4,995     Kansas City, MO, IDA,
                                 (Kingswood United
                                 Methodist Manor),                  5,772,971
                                 9.00%, 11/15/13
 Aaa       AAA        20,400     Loudoun County, VA,
                                 IDA, (Falcons Landing),           
                                 8.75%, 11/1/24                    26,052,432
 Aaa       AAA         2,100     Loudoun County, VA,
                                 IDA, Residential Care
                                 (Falcons Landing),            
                                 9.25%, 7/1/04                      2,494,464
 NR        NR         15,000     Louisiana Housing
                                 Finance Agency, (HCC
                                 Assisted Living Group 1), 
                                 (AMT), 9.00%, 3/1/25              16,927,350
 NR        NR            650     New Hampshire Higher
                                 Educational and Health
                                 Facilities (Riverwoods
                                 at Exeter), 8.00%, 3/1/01            663,832

                       See notes to financial statements

                                       16
<PAGE>
 
National Municipals Portfolio  as of March 31, 1998

PORTFOLIO OF INVESTMENTS (Unaudited) CONT'D


Ratings (Unaudited)                                                    
- -------------------          
                     Principal
                     Amount   
           Standard  (000's   
Moody's    & Poor's  omitted)    Security                        Value
- --------------------------------------------------------------------------------

Life Care (continued)
- --------------------------------------------------------------------------------
 Aaa       AAA      $ 20,000     New Jersey EDA, (Keswick 
                                 Pines Project),                 
                                 8.75%, 1/1/24                   $  24,757,800
 NR        NR          5,800     Ridgeland, MS, Urban
                                 Renewal, (The Orchard
                                 Project), 7.75%, 12/1/15            6,336,210
 NR        NR         10,000     Saint Tammany, LA,
                                 Public Finance,
                                 (Christwood Project),        
                                 9.00%, 11/15/25                    11,703,100
 NR        NR          4,500     Vermont IDA, (Wake
                                 Robin Corp.), 8.75%,          
                                 3/1/23/(3)/                         5,098,050
 NR        NR          7,500     Vermont IDA, (Wake
                                 Robin Corp.), 8.75%,          
                                 4/1/23                              8,510,475
- --------------------------------------------------------------------------------
                                                                 $ 147,266,195
- --------------------------------------------------------------------------------

Miscellaneous -- 2.5%
- --------------------------------------------------------------------------------
 NR        NR       $  6,225     American Samoa Economic 
                                 Development, Executive Office 
                                 Building, 10.125%, 9/1/08       $   6,528,282
 NR        NR          6,645     Hardeman County, TN,
                                 (Correctional Facilities 
                                 Corp.), 7.75%, 8/1/17               7,495,095
 NR        A-          6,500     Los Angeles Regional Airports 
                                 Improvement Corporation, CA,
                                 (LAXFuel), (AMT), 
                                 6.50%, 1/1/32                       6,753,175
 NR        NR         22,500     New Jersey Sports and
                                 Exposition Authority,
                                 (Monmouth Park),
                                 8.00%, 1/1/25                      25,732,350
 NR        NR          4,205     Niagara County, NY,
                                 Industrial Development
                                 Authority (Wintergarden Inn       
                                 Associates), 9.75%, 6/1/11/(1)/     1,682,000
 NR        NR         10,200     Orange County Community 
                                 Activity Corporation, NC,           
                                 8.00%, 3/1/24                       6,120,000
 NR        NR          1,600     Pittsfield Township,
                                 MI, EDC, (Arbor Hospice 
                                 Project), 7.875%, 8/15/27           1,688,944
- --------------------------------------------------------------------------------
                                                                 $  55,999,846
- --------------------------------------------------------------------------------

Nursing Homes -- 7.0%
- --------------------------------------------------------------------------------
 NR        NR       $ 13,270     Bell County, TX, (Riverside 
                                 Healthcare, Inc. - Normandy           
                                 Terrace), 9.00%, 4/1/23         $  15,993,004
 NR        NR          4,200     Collier County, FL, IDA, 
                                 Retirement Rental, (Beverly
                                 Enterprises - Florida,        
                                 Inc.), 10.75%, 3/1/03               4,835,334
 NR        NR          5,000     Delaware County, PA
                                 (Mainline - Haverford
                                 Nursing and Rehabilitation                
                                 Centers), 9.00%, 8/1/22             5,943,400
 NR        NR          4,650     Hillsborough County, FL, 
                                 IDA, Center for Independent 
                                 Living, Tampa Projects,             
                                 10.25%, 3/1/09/(5)/                 4,185,000
 NR        NR          5,460     Hillsborough County, FL, 
                                 IDA, Center for Independent 
                                 Living, Tampa Projects,             
                                 11.00%, 3/1/19/(5)/                 4,914,000
 Baa1      NR         10,000     Indianapolis, IN
                                 (National Benevolent
                                 Association - Robin Run 
                                 Village), 7.625%, 10/1/22          11,144,100
 NR        NR          3,575     Lackawanna County, PA,
                                 IDA, (Edella Street
                                 Associates), 8.875%, 9/1/14         4,003,428
 NR        NR          3,085     Luzerne County, PA,
                                 Industrial Development
                                 Authority (River Street             
                                 Associates), 8.75%, 
                                 6/15/07                             3,433,512
 NR        NR         13,250     Massachusetts IFA, (Age 
                                 Institute of Massachusetts), 
                                 8.05%, 11/1/25                     14,900,288
 NR        NR         11,780     Mississippi Business
                                 Finance Corp.
                                 (Magnolia Healthcare),             
                                 7.99%, 7/1/25                      12,755,384
 NR        NR          6,750     Missouri Health and
                                 Education Authority,
                                 (Bethesda Health Group
                                 of Saint Louis Inc.),               
                                 6.625%, 8/15/05                     7,194,083
 NR        NR         14,000     Missouri Health and
                                 Education Authority
                                 (Bethesda Health Group
                                 of Saint Louis, Inc.),       
                                 7.50%, 8/15/12                     15,741,320
 NR        NR         12,500     Montgomery, PA, IDA,
                                 (Advancement of
                                 Geriatric Health Care
                                 Institute), 8.375%,          
                                 7/1/23                             13,540,875

                       See notes to financial statements

                                       17
<PAGE>
 
National Municipals Portfolio as of March 31, 1998

PORTFOLIO OF INVESTMENTS (Unaudited) CONT'D


Ratings (Unaudited) 
- ------------------- Principal
                    Amount                                                      
          Standard  (000's                                                      
Moody's   & Poor's  omitted)      Security                      Value     
- --------------------------------------------------------------------------------

Nursing Homes (continued)
- --------------------------------------------------------------------------------
 NR        NR       $  5,000     New Jersey EDA,
                                 (Claremont Health
                                 System, Inc.),            
                                 9.10%, 9/1/22                   $   5,705,550
 NR        NR          5,915     New Jersey EDA,
                                 (Victoria Health
                                 Corporation),                 
                                 7.75%, 1/1/24                       6,466,278
 NR        NR          2,895     Okaloosa County,
                                 (Beverly Enterprises),
                                 10.75%, 10/1/03                     2,992,619
 A3        BBB         3,870     Racine County, WI,
                                 Health Center, 8.125%,        
                                 8/1/21                              3,972,362
 NR        NR          5,000     Sussex County, DE
                                 (Delaware Health
                                 Corporation),                 
                                 7.50%, 1/1/14                       5,377,550
 NR        NR          5,000     Sussex County, DE
                                 (Delaware Health
                                 Corporarion),                 
                                 7.60%, 1/1/24                       5,388,850
 NR        NR          4,500     Tarrant County Health
                                 Facilities, TX (3927
                                 Foundation), 10.25%,          
                                 9/1/19                              4,802,085
 NR        NR          2,500     Westmoreland, PA
                                 (Highland Health
                                 Systems, Inc.),               
                                 9.25%, 6/1/22                       2,864,400
- --------------------------------------------------------------------------------
                                                                 $ 156,153,422
- --------------------------------------------------------------------------------

Pooled Loans -- 0.2%
- --------------------------------------------------------------------------------
 Aa3       AA-      $  5,000     Port Seattle, WA,
                                 6.00%, 12/1/14                  $   5,133,000
- --------------------------------------------------------------------------------
                                                                 $   5,133,000
- --------------------------------------------------------------------------------

Solid Waste -- 1.7%
- --------------------------------------------------------------------------------
 NR        NR       $ 35,000     Robbins, Cook County,
                                 IL (Robbins Resource
                                 Recovery Partners, L.P.),
                                 8.375%, 10/15/16/(3)/           $  36,650,250
- --------------------------------------------------------------------------------
                                                                 $  36,650,250
- --------------------------------------------------------------------------------

Special Tax Revenue -- 0.5%
- --------------------------------------------------------------------------------
 Aa2       AA+      $  7,000     Florida Department of
                                 Transportation, (Right
                                 Of Way), 5.00%, 7/1/27          $   6,800,430
 Baa       BBB         3,755     Inglewood, CA Public
                                 Financing Authority,
                                 In-Town, Manchester-
                                 Prairie and North 
                                 Inglewood Industrial Park           
                                 Redevelopment Projects
                                 - Redevelopment Loans,
                                 7.00%, 5/1/22                   $   4,074,475
- --------------------------------------------------------------------------------
                                                                 $  10,874,905
- --------------------------------------------------------------------------------

Transportation -- 6.5%
- --------------------------------------------------------------------------------
 Baa1      BBB      $  6,340     Denver, CO, City and
                                 County Airport Revenue, 
                                 (AMT), 7.00%, 11/15/25          $   6,796,036
 Baa1      BBB         4,735     Denver, CO, City and
                                 County Airport Revenue, 
                                 (AMT), 7.50%, 11/15/23              5,457,466
 Baa3      BB+        52,500     Denver, CO, City and
                                 County, (United Airlines) 
                                 (AMT), 6.875%, 10/1/32             57,252,825
 A         A-          5,000     Hawaii Airport System
                                 (AMT), 7.00%, 7/1/18                5,415,750
 Baa1      BBB+        6,000     Metropolitan Transportation
                                 Authority, NY, 5.50%, 7/1/17        6,106,560
 Aa3       A+         10,000     New Jersey Turnpike
                                 Authority, 5.00%, 6/15/17           9,829,600
 A1        AA-        15,000     Port Authority of New
                                 York and New Jersey
                                 (AMT), Variable Rate,        
                                 1/15/27/(2)/                       16,837,500
 Aa3       A+          9,050     Triborough Bridge And
                                 Tunnel Authority, NY,
                                 5.125%, 1/1/22                      8,920,857
 Aa3       A+         10,450     Triborough Bridge and
                                 Tunnel Authority, NY,
                                 5.20%, 1/1/27                      10,372,043
 Aa3       A+         19,030     Triborough Bridge and
                                 Tunnel Authority, NY,
                                 5.25%, 1/1/28                      19,028,287
- --------------------------------------------------------------------------------
                                                                 $ 146,016,924
- --------------------------------------------------------------------------------

Water and Sewer -- 0.7%
- --------------------------------------------------------------------------------
 Aa2       AA       $ 10,000     Metropolitan Water
                                 District, Southern
                                 California Waterworks,          
                                 5.00%, 7/1/26                   $   9,733,700

                       See notes to financial statements

                                       18
<PAGE>
 
National Municipals Portfolio as of March 31, 1998

PORTFOLIO OF INVESTMENTS (Unaudited) CONT'D


Ratings (Unaudited) 
- ------------------- Principal
                    Amount                                                      
          Standard  (000's                                                      
Moody's   & Poor's  omitted)      Security                      Value     
- --------------------------------------------------------------------------------

Water and Sewer (continued)
- --------------------------------------------------------------------------------
 A2        A-       $  4,965     New York, NY,
                                 Municipal Water 
                                 Finance Authority,                  
                                 6.25%, 6/15/21                 $    5,194,135
- --------------------------------------------------------------------------------
                                                                $   14,927,835
- --------------------------------------------------------------------------------

Total Tax-Exempt Investments
    (identified cost $1,939,293,672)                            $2,234,702,636

- --------------------------------------------------------------------------------

Taxable-Investment -- 0.0%


Life Care -- 0.0%
- --------------------------------------------------------------------------------
 NR        NR       $    570     Ridgeland, MS, Urban
                                 Renewal (The Orchard),
                                 9.00%, 12/1/00                 $      575,301
- --------------------------------------------------------------------------------
                                                                $      575,301
- --------------------------------------------------------------------------------

Total Taxable-Investment
    (identified cost $570,000)                                  $      575,301
- --------------------------------------------------------------------------------

Total Investments -- 100.0%
    (identified cost $1,939,863,672)                            $2,235,277,937
- --------------------------------------------------------------------------------
At March 31, 1998, the concentration of the Portfolio's investments in the
various states, determined as a percentage of total investments, is
as follows:
   Colorado                                             11.0%
   Others, representing less than 10% individually      89.0%

The Portfolio invests primarily in debt securities issued by municipalties. The
ability of the issuers of the debt securities to meet their obligations may be
affected by economic developments in a specific industry or municipality. In
order to reduce the risk associated with such economic developments, at March
31, 1998, 17.1% of the securities in the portfolio of investments are backed by
bond insurance of various financial institutions and financial guaranty
assurance agencies. The aggregate percentage insured by financial institutions
ranged from 6.9% to 7.9% of total investments.

/(1)/ Non-income producing security.
/(2)/ Security has been issued as an inverse floater bond. 
/(3)/ Security has been segregated to cover when-issued securities.
/(4)/ When-issued security.
/(5)/ The Portfolio is accruing only partial interest on this security.

                       See notes to financial statements

                                       19
<PAGE>

National Municipals Portfolio as of March 31, 1998

FINANCIAL STATEMENTS (Unaudited)

Statement of Assets and Liabilities


As of March 31, 1998
Assets
- ------------------------------------------------------------------------- 
Investments, at value (Note 1A)
    (identified cost, $1,939,863,672)                     $2,235,277,937
Cash                                                                 906
Receivable for investments sold                               27,428,353
Receivable for when-issued securities sold (Note 1G)           4,940,075
Interest receivable                                           39,232,582
- -------------------------------------------------------------------------
Total assets                                              $2,306,879,853
- -------------------------------------------------------------------------


Liabilities
- ------------------------------------------------------------------------- 
Demand note payable (Note 5)                              $    4,013,000
Payable for when-issued securities (Note 1G)                  52,332,791
Payable to affiliate for Trustees' fees (Note 2)                   8,567
Accrued expenses                                                  23,707
- ------------------------------------------------------------------------- 
Total liabilities                                         $   56,378,065
- ------------------------------------------------------------------------- 
Net Assets applicable to investors' interest in           
    Portfolio                                             $2,250,501,788
- ------------------------------------------------------------------------- 


Sources of Net Assets
- ------------------------------------------------------------------------- 
Net proceeds from capital contributions and               
    withdrawals                                           $1,955,087,523
Net unrealized appreciation of investments
    (computed on the basis of identified cost)               295,414,265
- ------------------------------------------------------------------------- 
Total                                                     $2,250,501,788
- ------------------------------------------------------------------------- 


Statement of Operations


For the Six Months Ended
March 31, 1998
Investment Income (Note 1B)
- ------------------------------------------------------------------------- 
Interest income                                           $   71,477,884
- ------------------------------------------------------------------------- 
Total investment income                                   $   71,477,884
- ------------------------------------------------------------------------- 


Expenses
- ------------------------------------------------------------------------- 
Investment adviser fee (Note 2)                           $    4,687,827
Compensation of Trustees not members of the
    Investment Adviser's organization (Note 2)                    15,947
Custodian fee (Note 1J)                                          241,220
Legal and accounting services                                     75,200
Amortization of organization expenses (Note 1D)                    7,562
Miscellaneous                                                     82,157
- ------------------------------------------------------------------------- 
Total expenses                                            $    5,109,913
- ------------------------------------------------------------------------- 
Deduct --
    Reduction of custodian fee (Note 1J)                  $      232,168
- ------------------------------------------------------------------------- 
Total expense reductions                                  $      232,168
- ------------------------------------------------------------------------- 
Net expenses                                              $    4,877,745
- ------------------------------------------------------------------------- 

Net investment income                                     $   66,600,139
- ------------------------------------------------------------------------- 


Realized and Unrealized
Gain (Loss) on Investments
- ------------------------------------------------------------------------- 
Net realized gain (loss) --
    Investment transactions (identified cost basis)       $   62,869,299
    Financial futures contracts                              (12,173,968)
- ------------------------------------------------------------------------- 
Net realized gain on investment transactions              $   50,695,331
- ------------------------------------------------------------------------- 
Change in unrealized appreciation (depreciation) --
    Investments (identified cost basis)                   $   (2,970,248)
    Financial futures contracts                                8,081,000
- -------------------------------------------------------------------------  
Net change in unrealized appreciation
    (depreciation) of investments                         $    5,110,752
- -------------------------------------------------------------------------  

Net realized and unrealized gain on investments           $   55,806,083
- -------------------------------------------------------------------------  

Net increase in net assets from operations                $  122,406,222
- -------------------------------------------------------------------------  

                       See notes to financial statements

                                      20
<PAGE>

National Municipals Portfolio as of March 31, 1998

FINANCIAL STATEMENTS CONT'D

Statements of Changes in Net Assets


                                        Six Months Ended
Increase (Decrease)                     March 31, 1998       Year Ended
in Net Assets                           (Unaudited)          September 30, 1997
- --------------------------------------------------------------------------------
From operations --                  
    Net investment income                 $   66,600,139         $  141,173,780
    Net realized gain on            
        investment transactions               50,695,331                683,719
    Net change in unrealized                  
        appreciation (depreciation)                                             
        of investments                         5,110,752            133,564,032 
- --------------------------------------------------------------------------------
Net increase in net assets          
    from operations                       $  122,406,222         $  275,421,531
- --------------------------------------------------------------------------------
Capital transactions --             
    Contributions                         $  179,709,899         $  304,512,126
    Withdrawals                             (233,229,737)          (610,796,255)
- --------------------------------------------------------------------------------
Net decrease in net assets from                                  
    capital transactions                  $  (53,519,838)        $ (306,284,129)
- --------------------------------------------------------------------------------
                                    
Net increase (decrease) in          
    net assets                            $   68,886,384         $  (30,862,598)
- --------------------------------------------------------------------------------
    
                                
Net Assets                          
- --------------------------------------------------------------------------------
At beginning of period                    $2,181,615,404         $2,212,478,002
- --------------------------------------------------------------------------------
At end of period                          $2,250,501,788         $2,181,615,404
- --------------------------------------------------------------------------------


                       See notes to financial statements

                                      21
<PAGE>

National Municipals Portfolio as of March 31, 1998

FINANCIAL STATEMENTS CONT'D

Supplementary Data

<TABLE> 
<CAPTION> 
                                             Six Months Ended                        Year Ended September 30,
                                             March 31, 1998   ---------------------------------------------------------------------
                                             (Unaudited)            1997          1996          1995          1994          1993*
- -----------------------------------------------------------------------------------------------------------------------------------
<S>                                             <C>           <C>           <C>           <C>           <C>           <C> 
Ratios to average daily net assets
- -----------------------------------------------------------------------------------------------------------------------------------
Expenses/(1)/                                         0.46%+        0.52%         0.49%         0.50%         0.50%         0.47%+
Expenses after custodian fee reduction                0.44%+        0.52%         0.48%         0.49%           --            --
Net investment income                                 6.01%+        6.51%         6.65%         7.00%         6.55%         6.58%+
Portfolio Turnover                                      14%           17%           19%           54%           40%           13%
- -----------------------------------------------------------------------------------------------------------------------------------
Net assets, end of period (000's omitted)       $2,250,502    $2,181,615    $2,212,478    $2,260,646    $2,210,936    $2,083,322
- -----------------------------------------------------------------------------------------------------------------------------------
</TABLE> 
+     Annualized.

*     For the period from the start of business, February 1, 1993, to 
      September 30, 1993.

/(1)/ The expense ratios for the year ended September 30, 1995 and periods
      thereafter have been adjusted to reflect a change in reporting
      requirements. The new reporting guidelines require the Portfolio to
      increase its expense ratio by the effect of any expense offset
      arrangements with its service providers. The expense ratios for each of
      the prior periods have not been adjusted to reflect this change.

                       See notes to financial statements

                                      22
<PAGE>
 
National Municipals Portfolio as of March 31, 1998

NOTES TO FINANCIAL STATEMENTS (Unaudited)


1   Significant Accounting Policies
    ----------------------------------------------------------------------------
    National Municipals Portfolio (the Portfolio) is registered under the
    Investment Company Act of 1940 as a diversified open-end management
    investment company which was organized as a trust under the laws of the
    State of New York on May 1, 1992. The Declaration of Trust permits the
    Trustees to issue interests in the Portfolio. The following is a summary of
    significant accounting policies of the Portfolio. The policies are in
    conformity with generally accepted accounting principles.

    A Investment Valuation -- Municipal bonds are normally valued on the basis
    of valuations furnished by a pricing service. Taxable obligations, if any,
    for which price quotations are readily available are normally valued at the
    mean between the latest bid and asked prices. Futures contracts listed on
    the commodity exchanges are valued at closing settlement prices. Short-term
    obligations, maturing in sixty days or less, are valued at amortized cost,
    which approximates value. Investments for which valuations or market
    quotations are unavailable are valued at fair value using methods determined
    in good faith by or at the direction of the Trustees.

    B Income -- Interest income is determined on the basis of interest accrued,
    adjusted for amortization of premium or discount when required for federal
    income tax purposes.

    C Federal Taxes -- The Portfolio is treated as a partnership for federal tax
    purposes. No provision is made by the Portfolio for federal or state taxes
    on any taxable income of the Portfolio because each investor in the
    Portfolio is ultimately responsible for the payment of any taxes. Since some
    of the Portfolio's investors are regulated investment companies that invest
    all or substantially all of their assets in the Portfolio, the Portfolio
    normally must satisfy the applicable source of income and diversification
    requirements (under the Internal Revenue Code) in order for its investors to
    satisfy them. The Portfolio will allocate at least annually among its
    investors each investor's distributive share of the Portfolio's net taxable
    (if any) and tax-exempt investment income, net realized capital gains, and
    any other items of income, gain, loss, deduction or credit. Interest income
    received by the Portfolio on investments in municipal bonds, which is
    excludable from gross income under the Internal Revenue Code, will retain
    its status as income exempt from federal income tax when allocated to the
    Portfolio's investors. The portion of such interest, if any, earned on
    private activity bonds issued after August 7, 1986 may be considered a tax
    preference item for investors.

    D Deferred Organization Expenses -- Costs incurred by the Portfolio in
    connection with its organization are being amortized on the straight-line
    basis over five years.

    E Financial Futures Contracts -- Upon the entering of a financial futures
    contract, the Portfolio is required to deposit ("initial margin") either in
    cash or securities an amount equal to a certain percentage of the purchase
    price indicated in the financial futures contract. Subsequent payments are
    made or received by the Portfolio ("margin maintenance") each day, dependent
    on the daily fluctuations in the value of the underlying security, and are
    recorded for book purposes as unrealized gains or losses by the Portfolio.
    The Portfolio's investment in financial futures contracts is designed only
    to hedge against anticipated future changes in interest rates. Should
    interest rates move unexpectedly, the Portfolio may not achieve the
    anticipated benefits of the financial futures contracts and may realize a
    loss.

    F Legal Fees -- Legal fees and other related expenses incurred as part of
    negotiations of the terms and requirements of capital infusions, or that are
    expected to result in the restructuring of or a plan of reorganization for
    an investment are recorded as realized losses. Ongoing expenditures to
    protect or enhance an investment are treated as operating expenses.

    G When-issued and Delayed Delivery Transactions -- The Portfolio may engage
    in when-issued or delayed delivery transactions. The Portfolio records
    when-issued securities on trade date and maintains security positions such
    that sufficient liquid assets will be available to make payments for the
    securities purchased. Securities purchased on a when-issued or delayed
    delivery basis are marked-to-market daily and begin accruing interest on
    settlement date.

    H Use of Estimates -- The preparation of the financial statements in
    conformity with generally accepted accounting principles requires management
    to make estimates and assumptions that affect the reported amounts of assets
    and liabilities at the date of the financial statements and the reported
    amounts of revenue and expense during the reporting period. Actual results
    could differ from those estimates.

    I Other -- Investment transactions are accounted for on a trade date basis.

                                       23
<PAGE>
 
National Municipals Portfolio as of March 31, 1998

NOTES TO FINANCIAL STATEMENTS (Unaudited) CONT'D


    J Expense Reduction -- Investors Bank & Trust Company (IBT) serves as
    custodian of the Portfolio. Pursuant to the custodian agreement, IBT
    receives a fee reduced by credits which are determined based on the average
    daily cash balance the Portfolio maintains with IBT. All significant credit
    balances used to reduce the Portfolio's custodian fees are reflected as a
    reduction of operating expense on the Statement of Operations.

    K Interim Financial Information -- The interim financial statements relating
    to March 31, 1998 and for the six-month period then ended have not been
    audited by independent certified public accountants, but in the opinion of
    the Fund's management, reflect all adjustments, consisting only of normal
    recurring adjustments necessary for the fair presentation of the financial
    statements.

2   Investment Adviser Fee and Other Transactions with Affiliates
    ----------------------------------------------------------------------------
    The investment adviser fee is earned by Boston Management and Research
    (BMR), a wholly-owned subsidiary of Eaton Vance Management (EVM), as
    compensation for management and investment advisory services rendered to the
    Portfolio. The fee is based upon a percentage of average daily net assets
    plus a percentage of gross income (i.e., income other than gains from the
    sale of securities). For the six months ended March 31, 1998, the fee was
    equivalent to 0.42% (annualized) of the Portfolio's average daily net assets
    for such period and amounted to $4,687,827. Except as to Trustees of the
    Portfolio who are not members of EVM's or BMR's organization, officers and
    Trustees receive remuneration for their services to the Portfolio out of
    such investment adviser fee. Trustees of the Portfolio that are not
    affiliated with the Investment Adviser may elect to defer receipt of all or
    a percentage of their annual fees in accordance with the terms of the
    Trustees Deferred Compensation Plan. For the six months ended March 31,
    1998, no significant amounts have been deferred.

    Certain of the officers and Trustees of the Portfolio are officers and
    directors/trustees of the above organizations.

3   Investments
    ----------------------------------------------------------------------------
    Purchases and sales of investments, other than U.S. Government securities
    and short-term obligations, aggregated $316,089,166 and $357,485,625,
    respectively, for the six months ended March 31, 1998.

4   Federal Income Tax Basis of Investments
    ----------------------------------------------------------------------------
    The cost and unrealized appreciation/depreciation in value of the
    investments owned at March 31, 1998, as computed on a federal income tax
    basis, were as follows:


      Aggregate cost                                   $ 1,939,863,672
    ------------------------------------------------------------------------
      Gross unrealized appreciation                    $   311,242,372
      Gross unrealized depreciation                        (15,828,107)
    ------------------------------------------------------------------------

      Net unrealized appreciation                      $   295,414,265
    ------------------------------------------------------------------------

5   Line of Credit
    ----------------------------------------------------------------------------
    The Portfolio participates with other portfolios and funds managed by BMR
    and EVM and its affiliates in a $100 million unsecured line of credit
    agreement with a group of banks. The portfolio may temporarily borrow from
    the line of credit to satisfy redemption requests or settle investment
    transactions. Interest is charged to each portfolio or fund based on its
    borrowings at an amount above either the Eurodollar rate or federal funds
    rate. In addition, a fee computed at an annual rate of 0.10% on the daily
    unused portion of the line of credit is allocated among the participating
    portfolios and funds at the end of each quarter. At March 31, 1998, the
    Portfolio had a balance outstanding pursuant to this line of credit of
    $4,013,000. The Portfolio did not have any significant borrowings or
    allocated fees during the six months ended March 31, 1998.

6   Financial Instruments
    ----------------------------------------------------------------------------
    The Portfolio regularly trades in financial instruments with off-balance
    sheet risk in the normal course of its investing activities to assist in
    managing exposure to various market risks. These financial instruments
    include futures contracts and may involve, to a varying degree, elements of
    risk in excess of the amounts recognized for financial statement purposes.

    The notional or contractual amounts of these instruments represent the
    investment the Portfolio has in particular classes of financial instruments
    and does not necessarily represent the amounts potentially subject to risk.
    The measurement of the risks associated with these instruments is meaningful
    only when all related and offsetting transactions are considered. There were
    no open obligations under these financial instruments at March 31, 1998.

                                       24
<PAGE>
 
Eaton Vance National Municipals Fund as of March 31, 1998

INVESTMENT MANAGEMENT


Eaton Vance National Municipals Fund

         Officers                                                 
                                                                  
         Thomas J. Fetter                                         
         President                                                
                                                                  
         James B. Hawkes                                          
         Vice President and Trustee                               
                                                                  
         Robert B. MacIntosh                                      
         Vice President                                           
                                                                  
         James L. O'Connor                                        
         Treasurer                                                
                                                                  
         Alan R. Dynner                                           
         Secretary                                                
                                                                  
                                                                  
         Independent Trustees                                     
                                                                  
         Donald R. Dwight                                         
         President, Dwight Partners, Inc.                         
                                                                  
         Samuel L. Hayes, III                                     
         Jacob H. Schiff Professor of Investment Banking,         
         Harvard University Graduate School of                    
         Business Administration                                  
                                                                  
         Norton H. Reamer                                         
         President and Director, United Asset                     
         Management Corporation                                   
                                                                  
         John L. Thorndike                                        
         Formerly Director, Fiduciary Company Incorporated        
                                                                  
         Jack L. Treynor                                          
         Investment Adviser and Consultant                         


National Municipals Portfolio


         Officers                                                       
                                                                        
         Thomas J. Fetter                                               
         President                                                      
                                                                        
         James B. Hawkes                                                
         Vice President and Trustee                                     
                                                                        
         Robert B. MacIntosh                                            
         Vice President                                                 
                                                                        
         Thomas M. Metzold                                              
         Vice President and                                             
         Portfolio Manager                                              
                                                                        
         James L. O'Connor                                              
         Treasurer                                                      
                                                                        
         Alan R. Dynner                                                 
         Secretary                                                      
                                                                        
                                                                        
         Independent Trustees                                           
                                                                        
         Donald R. Dwight                                               
         President, Dwight Partners, Inc.                               
                                                                        
         Samuel L. Hayes, III                                           
         Jacob H. Schiff Professor of Investment Banking,               
         Harvard University Graduate School of Business Administration  
                                                                        
         Norton H. Reamer                                               
         President and Director, United Asset                           
         Management Corporation                                         
                                                                        
         John L. Thorndike                                              
         Formerly Director, Fiduciary Company Incorporated              
                                                                        
         Jack L. Treynor                                                
         Investment Adviser and Consultant                               

                                      25
<PAGE>
 
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<PAGE>
 
                       This Page Intentionally Left Blank
<PAGE>

Investment Advisor of
National Municipals Portfolio
Boston Management and Research
24 Federal Street
Boston, MA 02110


Administrator of
Eaton Vance National Municipals Fund
Eaton Vance Management
24 Federal Street
Boston, MA 02110


Principal Underwriter
Eaton Vance Distributors, Inc.
24 Federal Street
Boston, MA 02110
(617)482-8260


Custodian
Investors Bank & Trust Company
200 Clarendon Street, 16th Floor
Boston, MA 02116


Transfer Agent
First Data Investor Services Group, Inc.
Attention:  Eaton Vance Funds
P.O. Box 5123
Westborough, MA 01581-5123







Eaton Vance Municipals Fund
24 Federal Street
Boston, MA 02110



- ------------------------------------------------------------------------------
  This report must be preceded or accompanied by a current prospectus which
  contains more complete information on the Fund, including its distribution
  plan, sales charges and expenses. Please read the prospectus carefully 
  before you invest or send money.
- ------------------------------------------------------------------------------

                                                                      HMSRC-5/98


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