<Page> FORM N-CSR CERTIFIED SHAREHOLDER REPORT OF REGISTERED MANAGEMENT INVESTMENT COMPANIES Investment Company Act File Number: 811-08014 --------- Utilities Portfolio ------------------- (Exact Name of Registrant as Specified in Charter) The Eaton Vance Building, 255 State Street, Boston, Massachusetts 02109 ----------------------------------------------------------------------- (Address of Principal Executive Offices) Alan R. Dynner The Eaton Vance Building, 255 State Street, Boston, Massachusetts 02109 ----------------------------------------------------------------------- (Name and Address of Agent for Services) (617) 482-8260 -------------- (Registrant's Telephone Number) December 31 ----------- Date of Fiscal Year End December 31, 2003 ----------------- Date of Reporting Period <Page> ITEM 1. REPORTS TO STOCKHOLDERS <Page> UTILITIES PORTFOLIO as of December 31, 2003 PORTFOLIO OF INVESTMENTS COMMON STOCKS -- 92.6% <Table> <Caption> SECURITY SHARES VALUE - ------------------------------------------------------------------------------------------- BROADCASTING AND CABLE -- 0.0% Antena 3 Television SA(1)(2) 845 $ 37,240 Ovation, Inc.(2)(3) 18,040 0 - ------------------------------------------------------------------------------------------- $ 37,240 - ------------------------------------------------------------------------------------------- ELECTRIC UTILITIES -- 30.8% ALLETE, Inc. 555,000 $ 16,983,000 Alliant Energy Corp. 100,000 2,490,000 Black Hills Corp. 100,000 2,983,000 Dominion Resources, Inc. 100,000 6,383,000 Edison International 100,000 2,193,000 Endesa SA(1) 100,000 1,923,559 Enel SPA(1) 500,000 3,399,338 Energy East Corp. 710,000 15,904,000 Entergy Corp. 305,000 17,424,650 Exelon Corp. 280,625 18,622,275 Fortis, Inc.(1) 50,000 2,248,404 Fortum Oyj(1) 450,000 4,643,029 FPL Group, Inc. 50,000 3,271,000 National Grid Transco PLC(1) 763,810 5,472,756 Pepco Holdings, Inc. 512,800 10,020,112 PPL Corp. 198,500 8,684,375 Public Power Corp.(1) 65,000 1,606,960 Public Service Enterprise Group, Inc. 193,100 8,457,780 Scottish and Southern Energy PLC(1) 500,000 6,023,855 WPS Resources Corp. 50,000 2,311,500 - ------------------------------------------------------------------------------------------- $ 141,045,593 - ------------------------------------------------------------------------------------------- ENGINEERING AND CONSTRUCTION -- 0.3% Bouygues(1) 37,140 $ 1,298,586 - ------------------------------------------------------------------------------------------- $ 1,298,586 - ------------------------------------------------------------------------------------------- GAS UTILITIES -- 5.1% AGL Resources, Inc. 130,000 $ 3,783,000 Equitable Resources, Inc. 210,000 9,013,200 KeySpan Corp. 20,000 736,000 ONEOK, Inc. 122,600 2,707,008 TransAlta Corp.(1) 125,000 1,777,500 Vectren Corp. 102,000 2,514,300 Williams Co., Inc. (The) 300,000 2,946,000 - ------------------------------------------------------------------------------------------- $ 23,477,008 - ------------------------------------------------------------------------------------------- INTEGRATED OIL -- 8.8% BP PLC ADR(1) 175,000 $ 8,636,250 ChevronTexaco Corp. 100,000 8,639,000 ConocoPhillips 115,000 7,540,550 Exxon Mobil Corp. 150,000 6,150,000 Total SA ADR(1) 100,000 9,251,000 - ------------------------------------------------------------------------------------------- $ 40,216,800 - ------------------------------------------------------------------------------------------- OIL AND GAS - EQUIPMENT AND SERVICES -- 0.4% Marathon Oil Corp. 50,000 $ 1,654,500 - ------------------------------------------------------------------------------------------- $ 1,654,500 - ------------------------------------------------------------------------------------------- OIL AND GAS - EXPLORATION AND PRODUCTION -- 2.3% Occidental Petroleum Corp. 220,000 $ 9,292,800 Talisman Energy, Inc.(1) 20,000 1,132,000 - ------------------------------------------------------------------------------------------- $ 10,424,800 - ------------------------------------------------------------------------------------------- PUBLISHING -- 0.7% Pearson PLC(1) 200,000 $ 2,226,947 Pearson PLC ADR(1) 75,000 840,750 - ------------------------------------------------------------------------------------------- $ 3,067,697 - ------------------------------------------------------------------------------------------- TELECOMMUNICATIONS SERVICES -- 13.1% Alltel Corp.(2) 100,000 $ 4,658,000 BT Group PLC(1) 1,700,000 5,728,928 Chunghwa Telecom Co., Ltd. ADR(1) 154,800 2,244,600 Deutsche Telekom AG(1)(2) 400,000 7,204,831 Elisa Oyj(1)(2) 230,000 3,075,171 Koninklijke (Royal) KPN NV(1)(2) 100,000 771,946 Sempra Energy 254,700 7,656,282 TDC A/S(1) 300,600 10,846,379 Telecom Italia Mobile(1) 752,000 4,088,187 Telefonica SA(1) 250,000 3,670,528 Telekom Austria AG(1)(2) 4,598 56,837 Telenor ASA(1) 1,000,000 6,538,600 TELUS Corp.(1) 200,000 3,722,000 - ------------------------------------------------------------------------------------------- $ 60,262,289 - ------------------------------------------------------------------------------------------- TELEPHONE UTILITIES -- 15.3% BCE, Inc.(1) 540,400 $ 12,083,344 BellSouth Corp. 625,000 17,687,500 Manitoba Telecom Services, Inc.(1) 60,000 2,043,877 </Table> See notes to financial statements. 15 <Page> <Table> <Caption> SECURITY SHARES VALUE - ------------------------------------------------------------------------------------------- TELEPHONE UTILITIES (CONTINUED) SBC Communications, Inc. 825,000 $ 21,507,750 Telefonos de Mexico SA de CV (Telmex) ADR(1) 200,000 6,606,000 Verizon Communications, Inc. 295,000 10,348,600 - ------------------------------------------------------------------------------------------- $ 70,277,071 - ------------------------------------------------------------------------------------------- UTILITIES - ELECTRICAL AND GAS -- 12.1% Ameren Corp. 50,800 $ 2,336,800 Centrica PLC(1) 1,100,000 4,154,938 Cinergy Corp. 200,000 7,762,000 FirstEnergy Corp. 365,000 12,848,000 MDU Resources Group, Inc. 313,350 7,460,864 NSTAR 50,000 2,425,000 PG&E Corp.(2) 425,000 11,802,250 Scottish Power PLC(1) 754,290 5,026,463 Xcel Energy, Inc. 100,000 1,698,000 - ------------------------------------------------------------------------------------------- $ 55,514,315 - ------------------------------------------------------------------------------------------- WATER UTILITIES -- 3.1% Philadelphia Suburban Corp. 325,000 $ 7,182,500 United Utilities PLC(1) 180,207 1,598,471 Veolia Environnement(1) 197,588 5,308,548 - ------------------------------------------------------------------------------------------- $ 14,089,519 - ------------------------------------------------------------------------------------------- WIRELESS TELECOMMUNICATIONS SERVICES -- 0.6% Centennial Communications Corp.(2) 200,000 $ 1,052,000 Western Wireless Corp.(2) 100,000 1,836,000 - ------------------------------------------------------------------------------------------- $ 2,888,000 - ------------------------------------------------------------------------------------------- TOTAL COMMON STOCKS (IDENTIFIED COST $346,271,694) $ 424,253,418 - ------------------------------------------------------------------------------------------- CONVERTIBLE PREFERRED STOCKS -- 6.2% ELECTRIC UTILITIES -- 1.9% FPL Group, Inc.(2) 150,000 $ 8,659,500 - ------------------------------------------------------------------------------------------- $ 8,659,500 - ------------------------------------------------------------------------------------------- GAS UTILITIES -- 1.6% KeySpan Corp.(2) 100,000 $ 5,390,000 Williams Cos., Inc.(2)(4) 29,400 1,914,675 - ------------------------------------------------------------------------------------------- $ 7,304,675 - ------------------------------------------------------------------------------------------- TELECOMMUNICATIONS SERVICES -- 1.0% Alltel Corp. 100,000 $ 4,970,000 - ------------------------------------------------------------------------------------------- $ 4,970,000 - ------------------------------------------------------------------------------------------- UTILITIES - ELECTRICAL AND GAS -- 1.7% Cinergy Corp.(2) 120,000 $ 7,644,000 Reliant Resources, Inc.(2)(4) 100,000 113,875 - ------------------------------------------------------------------------------------------- $ 7,757,875 - ------------------------------------------------------------------------------------------- TOTAL CONVERTIBLE PREFERRED STOCKS (IDENTIFIED COST $25,073,200) $ 28,692,050 - ------------------------------------------------------------------------------------------- PREFERRED STOCKS -- 0.0% BROADCASTING AND CABLE -- 0.0% Ovation, Inc. (PIK)(3) 807 $ 0 - ------------------------------------------------------------------------------------------- $ 0 - ------------------------------------------------------------------------------------------- TOTAL PREFERRED STOCKS (IDENTIFIED COST $3,595,224) $ 0 - ------------------------------------------------------------------------------------------- SHORT-TERM INVESTMENTS -- 1.1% <Caption> PRINCIPAL AMOUNT SECURITY (000'S OMITTED) VALUE - ------------------------------------------------------------------------------------------- Investors Bank and Trust Time Deposit, 1.01%, 1/2/04 $ 5,037 $ 5,037,000 - ------------------------------------------------------------------------------------------- TOTAL SHORT-TERM INVESTMENTS (AT AMORTIZED COST, $5,037,000) $ 5,037,000 - ------------------------------------------------------------------------------------------- TOTAL INVESTMENTS -- 99.9% (IDENTIFIED COST $379,977,118) $ 457,982,468 - ------------------------------------------------------------------------------------------- OTHER ASSETS, LESS LIABILITIES -- 0.1% $ 356,093 - ------------------------------------------------------------------------------------------- NET ASSETS -- 100.0% $ 458,338,561 - ------------------------------------------------------------------------------------------- </Table> ADR - American Depositary Receipt PIK - Payment In Kind. (1) Foreign security. (2) Non-income producing security. (3) Private Placement security valued at fair value using methods determined in good faith by or at the direction of the Trustees. (4) Security exempt from registration under Rule 144A of the Securities Act of 1933. These securities may be resold in transactions exempt from registration, normally to qualified institutional buyers. See notes to financial statements. 16 <Page> UTILITIES PORTFOLIO as of December 31, 2003 FINANCIAL STATEMENTS STATEMENT OF ASSETS AND LIABILITIES AS OF DECEMBER 31, 2003 <Table> ASSETS Investments, at value (identified cost, $379,977,118) $ 457,982,468 Cash 1,532 Interest and dividends receivable 1,021,414 Tax reclaim receivable 43,362 - ------------------------------------------------------------------------------------------------- TOTAL ASSETS $ 459,048,776 - ------------------------------------------------------------------------------------------------- LIABILITIES Payable for investments purchased $ 685,765 Payable to affiliate for Trustees' fees 4,657 Accrued expenses 19,793 - ------------------------------------------------------------------------------------------------- TOTAL LIABILITIES $ 710,215 - ------------------------------------------------------------------------------------------------- NET ASSETS APPLICABLE TO INVESTORS' INTEREST IN PORTFOLIO $ 458,338,561 - ------------------------------------------------------------------------------------------------- SOURCES OF NET ASSETS Net proceeds from capital contributions and withdrawals $ 380,332,778 Net unrealized appreciation (computed on the basis of identified cost) 78,005,783 - ------------------------------------------------------------------------------------------------- TOTAL $ 458,338,561 - ------------------------------------------------------------------------------------------------- </Table> STATEMENT OF OPERATIONS FOR THE YEAR ENDED DECEMBER 31, 2003 <Table> INVESTMENT INCOME Dividends (net of foreign taxes, $446,501) $ 15,066,255 Interest 6,933 - ------------------------------------------------------------------------------------------------- TOTAL INVESTMENT INCOME $ 15,073,188 - ------------------------------------------------------------------------------------------------- EXPENSES Investment adviser fee $ 2,476,178 Trustees' fees and expenses 17,446 Custodian fee 215,126 Legal and accounting services 37,886 Interest expense 7,002 Miscellaneous 10,959 - ------------------------------------------------------------------------------------------------- TOTAL EXPENSES $ 2,764,597 - ------------------------------------------------------------------------------------------------- NET INVESTMENT INCOME $ 12,308,591 - ------------------------------------------------------------------------------------------------- REALIZED AND UNREALIZED GAIN (LOSS) Net realized gain (loss) -- Investment transactions (identified cost basis) $ 14,161,481 Foreign currency transactions 6,799 - ------------------------------------------------------------------------------------------------- NET REALIZED GAIN $ 14,168,280 - ------------------------------------------------------------------------------------------------- Change in unrealized appreciation (depreciation) -- Investments (identified cost basis) $ 66,336,115 Foreign currency 1,686 - ------------------------------------------------------------------------------------------------- NET CHANGE IN UNREALIZED APPRECIATION (DEPRECIATION) $ 66,337,801 - ------------------------------------------------------------------------------------------------- NET REALIZED AND UNREALIZED GAIN $ 80,506,081 - ------------------------------------------------------------------------------------------------- NET INCREASE IN NET ASSETS FROM OPERATIONS $ 92,814,672 - ------------------------------------------------------------------------------------------------- </Table> See notes to financial statements. 17 <Page> STATEMENTS OF CHANGES IN NET ASSETS <Table> <Caption> INCREASE (DECREASE) YEAR ENDED YEAR ENDED IN NET ASSETS DECEMBER 31, 2003 DECEMBER 31, 2002 - ------------------------------------------------------------------------------------------------ From operations -- Net investment income $ 12,308,591 $ 12,427,542 Net realized gain (loss) 14,168,280 (55,140,171) Net change in unrealized appreciation (depreciation) 66,337,801 (8,053,833) - ------------------------------------------------------------------------------------------------ NET INCREASE (DECREASE) IN NET ASSETS FROM OPERATIONS $ 92,814,672 $ (50,766,462) - ------------------------------------------------------------------------------------------------ Capital transactions -- Contributions $ 91,610,795 $ 44,414,851 Withdrawals (77,164,674) (68,277,125) - ------------------------------------------------------------------------------------------------ NET INCREASE (DECREASE) IN NET ASSETS FROM CAPITAL TRANSACTIONS $ 14,446,121 $ (23,862,274) - ------------------------------------------------------------------------------------------------ NET INCREASE (DECREASE) IN NET ASSETS $ 107,260,793 $ (74,628,736) - ------------------------------------------------------------------------------------------------ NET ASSETS At beginning of year $ 351,077,768 $ 425,706,504 - ------------------------------------------------------------------------------------------------ AT END OF YEAR $ 458,338,561 $ 351,077,768 - ------------------------------------------------------------------------------------------------ </Table> See notes to financial statements. 18 <Page> SUPPLEMENTARY DATA <Table> <Caption> YEAR ENDED DECEMBER 31, --------------------------------------------------------------------- 2003 2002 2001 2000 1999 - --------------------------------------------------------------------------------------------------------------------------- RATIOS/SUPPLEMENTAL DATA Ratios (As a percentage of average daily net assets): Expenses 0.72% 0.73% 0.71% 0.71% 0.72% Interest expense --(1) --(1) 0.01% 0.01% --(1) Net investment income 3.22% 3.40% 2.00% 1.54% 1.68% Portfolio Turnover 106% 146% 169% 149% 93% - --------------------------------------------------------------------------------------------------------------------------- TOTAL RETURN(2) 26.44% (12.13)% (18.61)% -- -- - --------------------------------------------------------------------------------------------------------------------------- NET ASSETS, END OF YEAR (000'S OMITTED) $ 458,339 $ 351,078 $ 425,707 $ 574,586 $ 579,090 - --------------------------------------------------------------------------------------------------------------------------- </Table> (1) Represents less than 0.01%. (2) Total return is required to be disclosed for fiscal years beginning after December 15, 2000. See notes to financial statements. 19 <Page> UTILITIES PORTFOLIO as of December 31, 2003 NOTES TO FINANCIAL STATEMENTS 1 SIGNIFICANT ACCOUNTING POLICIES Utilities Portfolio (the Portfolio) is registered under the Investment Company Act of 1940, as amended, as a diversified open-end management investment company. The Portfolio, which was organized as a trust under the laws of the State of New York on May 1, 1992, seeks to achieve total return by investing principally in dividend-paying common stocks and dividend-paying or interest-bearing securities that are convertible into common stock. The Declaration of Trust permits the Trustees to issue beneficial interests in the Portfolio. At December 31, 2003, the Eaton Vance Utilities Fund held an approximate 99.9% interest in the Portfolio. Under normal circumstances the Portfolio invests at least 80% of its total assets in common stocks of utilities companies. The following is a summary of significant accounting policies of the Portfolio. The policies are in conformity with accounting principles generally accepted in the United States of America. A INVESTMENT VALUATION -- Securities listed on securities exchanges are valued at closing sales prices or, if there has been no sale, at the mean between the closing bid and asked prices. Marketable securities listed in the NASDAQ Market System are valued at the NASDAQ official closing price. Unlisted securities are valued at the mean between the latest available bid and asked prices. Short-term obligations, maturing in 60 days or less, are valued at amortized cost, which approximates value. Other fixed income and debt securities, including listed securities and securities for which price quotations are available, will normally be valued on the basis of valuations furnished by a pricing service. Securities for which market quotations are unavailable are appraised at their fair value as determined in good faith by or at the direction of the Trustees. Generally, trading in foreign securities is substantially completed each day at various times prior to the close of the Exchange. The values of these securities used in determining the net asset value of a Portfolio generally are computed as of such times. Occasionally, events affecting the value of foreign securities may occur between such times and the close of the Exchange which will not be reflected in the computation of a Portfolio's net asset value (unless the Portfolio deems that such events would materially affect is net asset value, in which case an adjustment would be made and reflected in such computation). The Portfolio may rely on an independent fair valuation service in making any such adjustments. Foreign securities and currency held by a Portfolio will be valued in U.S. dollars; such values will be computed by the custodian based on foreign currency exchange rate quotations supplied by an independent quotation service. B INCOME -- Interest income is determined on the basis of interest accrued, adjusted for amortization of premium or accretion of discount. Dividend income is recorded on the ex-dividend date for dividends received in cash and/or securities. However, if the ex-dividend date has passed, certain dividends from foreign securities are recorded as the Portfolio is informed of the ex-dividend date. Dividend income may include dividends that represent returns of capital for federal income tax purposes. C INCOME 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 one of the Portfolio's investors is a regulated investment company that invests all or substantially all of its 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 investment income, net realized capital gains, and any other items of income, gain, loss, deduction or credit. Withholding taxes on foreign dividends and capital gains have been provided for in accordance with the Portfolio's understanding of the applicable countries' tax rules and rates. D FOREIGN CURRENCY TRANSLATION -- Investment valuations, other assets, and liabilities initially expressed in foreign currencies are converted each business day into U.S. dollars based upon current exchange rates. Purchases and sales of foreign investment securities and income and expenses are converted into U.S. dollars based upon currency exchange rates prevailing on the respective dates of such transactions. Realized gains or losses on investment transactions attributable to changes in foreign currency exchange rates are recorded for financial statement purposes as net realized gains and losses on investments. That portion of unrealized gains and losses on investments that results from fluctuations in foreign currency exchange rates is not separately disclosed. E DELAYED DELIVERY TRANSACTIONS -- The Portfolio may purchase or sell securities on a when-issued or forward commitment basis. Payment and delivery may take place at a period in time after the date of the transaction. At the time the transaction is negotiated, the price of the security that 20 <Page> will be delivered and paid for is fixed. Losses may arise due to changes in the market value of the underlying securities or if the counterparty does not perform under the contract. F EXPENSE REDUCTION -- Investors Bank & Trust Company (IBT) serves as custodian to the Portfolio. Pursuant to the custodian agreement, IBT receives a fee reduced by credits which are determined based on the average daily cash balances the Portfolio maintains with IBT. All significant credit balances used to reduce the Portfolio's custodian fees are reported as a reduction of expenses on the Statement of Operations. For the year ended December 31, 2003, $36 in credit balances were used to reduce the Portfolio's custodian fee. G OTHER -- Investment transactions are accounted for on a trade date basis. Realized gains and losses are computed based on the specific identification of the securities sold. H USE OF ESTIMATES -- The preparation of the financial statements in conformity with accounting principles generally accepted in the United States of America 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 income and expense during the reporting period. Actual results could differ from those estimates. I INDEMNIFICATIONS -- Under the Portfolio's organizational documents, its officers and Trustees may be indemnified against certain liabilities and expenses arising out of the performance of their duties to the Portfolio. Interestholders in the Portfolio are jointly and severally liable for the liabilities and obligations of the Portfolio in the event that the Portfolio fails to satisfy such liabilities and obligations; provided, however, that, to the extent assets are available in the Portfolio, the Portfolio may, under certain circumstances, indemnify interestholders from and against any claim or liability to which such holder may become subject by reason of being or having been an interestholder in the Portfolio. Additionally, in the normal course of business, the Fund enters into agreements with service providers that may contain indemnification clauses. The Portfolio's maximum exposure under these arrangements is unknown as this would involve future claims that may be made against the Portfolio that have not yet occurred. 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 payable monthly at the annual rate of 0.75% of the Portfolio's average daily net assets up to $500 million, 0.6875% from $500 million up to $1 billion, and at reduced rates as daily net assets exceed that level. In addition, the Trustees voted to accept a reduction of BMR's compensation so that advisory fees paid will not exceed 0.65% on an annual basis on assets up to $500 million, 0.625% from $500 million up to $1 billion, and at reduced rates thereafter. For the year ended December 31, 2003, the fee was equivalent to 0.65% of the Portfolio's average daily net assets for such period and amounted to $2,476,178. 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. Certain officers and Trustees of the Portfolio are officers of the above organizations. 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 year ended December 31, 2003, no significant amounts have been deferred. 3 INVESTMENT TRANSACTIONS Purchases and sales of investments, other than short-term obligations, aggregated $398,597,906, and $438,678,110, respectively, for the year ended December 31, 2003. 4 FEDERAL INCOME TAX BASIS OF INVESTMENTS The cost and unrealized appreciation (depreciation) in value of the investments owned at December 31, 2003, as computed on a federal income tax basis, were as follows: <Table> AGGREGATE COST $ 380,307,447 -------------------------------------------------- Gross unrealized appreciation $ 84,141,698 Gross unrealized depreciation (6,466,677) -------------------------------------------------- NET UNREALIZED APPRECIATION $ 77,675,021 -------------------------------------------------- </Table> The net unrealized appreciation on foreign currency was $433 at December 31, 2003. 21 <Page> 5 LINE OF CREDIT The Portfolio participates with other portfolios and funds managed by BMR and EVM and its affiliates in a $150 million unsecured line of credit agreement with a group of banks. Borrowings will be made by the Portfolio solely to facilitate the handling of unusual and/or unanticipated short-term cash requirements. Interest is charged to each portfolio or fund based on its borrowings at an amount above 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. The Portfolio did not have any significant borrowings or allocated fees during the year ended December 31, 2003. 22 <Page> UTILITIES PORTFOLIO as of December 31, 2003 INDEPENDENT AUDITORS' REPORT TO THE TRUSTEES AND INVESTORS OF UTILITIES PORTFOLIO In our opinion, the accompanying statement of assets and liabilities, including the portfolio of investments, and the related statements of operations and of changes in net assets and the supplementary data present fairly, in all material respects, the financial position of Utilities Portfolio (the "Portfolio") at December 31, 2003, and the results of its operations, the changes in its net assets and the supplementary data for the periods indicated, in conformity with accounting principles generally accepted in the United States of America. These financial statements and supplementary data (hereafter referred to as "financial statements") are the responsibility of the Portfolio's management; our responsibility is to express an opinion on these financial statements based on our audits. We conducted our audits of these financial statements in accordance with auditing standards generally accepted in the United States of America, which require that we plan and perform the audit to obtain reasonable assurance about whether the financial statements are free of material misstatement. An audit includes examining, on a test basis, evidence supporting the amounts and disclosures in the financial statements, assessing the accounting principles used and significant estimates made by management, and evaluating the overall financial statement presentation. We believe that our audits, which included confirmation of securities at December 31, 2003 by correspondence with the custodian and brokers, provide a reasonable basis for our opinion. PricewaterhouseCoopers LLP Boston, Massachusetts February 24, 2004 23 <Page> EATON VANCE UTILITIES FUND MANAGEMENT AND ORGANIZATION FUND MANAGEMENT. The Trustees of Eaton Vance Special Investment Trust (the Trust) and Utilities Portfolio (the Portfolio) are responsible for the overall management and supervision of the Trust's and Portfolio's affairs. The Trustees and officers of the Trust and the Portfolio are listed below. Except as indicated, each individual has held the office shown or other offices in the same company for the last five years. Trustees and officers of the Trust and the Portfolio hold indefinite terms of office. The "noninterested Trustees" consist of those Trustees who are not "interested persons" of the Trust and the Portfolio, as that term is defined under the 1940 Act. The business address of each Trustee and officer is The Eaton Vance Building, 255 State Street, Boston Massachusetts 02109. As used below, "EVC" refers to Eaton Vance Corp., "EV" refers to Eaton Vance, Inc., "EVM" refers to Eaton Vance Management, "BMR" refers to Boston Management and Research and "EVD" refers to Eaton Vance Distributors, Inc. EVC and EV are the corporate parent and trustee, respectively, of EVM and BMR. EVD is the Fund's principal underwriter, the Portfolio's placement agent and a wholly-owned subsidiary of EVM. <Table> <Caption> POSITION(S) TERM OF NUMBER OF PORTFOLIOS WITH THE OFFICE AND IN FUND COMPLEX NAME AND TRUST AND LENGTH OF PRINCIPAL OCCUPATION(S) OVERSEEN BY DATE OF BIRTH THE PORTFOLIO SERVICE DURING PAST FIVE YEARS TRUSTEE(1) OTHER DIRECTORSHIPS HELD - ----------------------------------------------------------------------------------------------------------------------------------- INTERESTED TRUSTEE(S) Jessica M. Bibliowicz Trustee Since 1998 Chairman, President and Chief 193 Director of National 11/28/59 Executive Officer of National Financial Partners Financial Partners (financial services company) (since April 1999). President and Chief Operating Officer of John A. Levin & Co. (registered investment adviser) (July 1997 to April 1999) and a Director of Baker, Fentress & Company, which owns John A. Levin & Co. (July 1997 to April 1999). Ms. Bibliowicz is an interested person because of her affiliation with a brokerage firm. James B. Hawkes Trustee Trustee of Chairman, President and Chief 195 Director of EVC 11/9/41 the Trust Executive Officer of BMR, EVC, since 1989; EVM and EV; Director of EV; of the Vice President and Director of Portfolio EVD. Trustee and/or officer of since 1992 195 registered investment companies in the Eaton Vance Fund Complex. Mr. Hawkes is an interested person because of his positions with BMR, EVM, EVC and EV, which are affiliates of the Fund and the Portfolio. <Caption> POSITION(S) TERM OF NUMBER OF PORTFOLIOS WITH THE OFFICE AND IN FUND COMPLEX NAME AND TRUST AND LENGTH OF PRINCIPAL OCCUPATION(S) OVERSEEN BY DATE OF BIRTH THE PORTFOLIO SERVICE DURING PAST FIVE YEARS TRUSTEE(1) - ----------------------------------------------------------------------------------------------------------------------------------- NONINTERESTED TRUSTEE(S) Samuel L. Hayes, III Trustee Trustee of Jacob H. Schiff Professor of 195 Director of Tiffany & Co. 2/23/35 the Trust Investment Banking Emeritus, (specialty retailer) and since 1989; Harvard University Graduate Telect, Inc. of the School of Business (telecommunication Portfolio Administration. services company) since 1992 William H. Park Trustee Since 2003 President and Chief 192 None 9/19/47 Executive Officer, Prizm Capital Management, LLC (investment management firm) (since 2002). Executive Vice President and Chief Financial Officer, United Asset Management Corporation ( a holding company owning institutional investment management firms) (1982-2001). Ronald A. Pearlman Trustee Since 2003 Professor of Law, Georgetown 192 None 7/10/40 University Law Center (since 1999). Tax Partner, Covington & Burling, Washington, DC (1991-2000). </Table> 24 <Page> <Table> <Caption> POSITION(S) TERM OF NUMBER OF PORTFOLIOS WITH THE OFFICE AND IN FUND COMPLEX NAME AND TRUST AND LENGTH OF PRINCIPAL OCCUPATION(S) OVERSEEN BY DATE OF BIRTH THE PORTFOLIO SERVICE DURING PAST FIVE YEARS TRUSTEE(1) OTHER DIRECTORSHIPS HELD - ----------------------------------------------------------------------------------------------------------------------------------- NONINTERESTED TRUSTEE(S) (CONTINUED) Norton H. Reamer Trustee Trustee of President, Chief Executive 195 None 9/21/35 the Trust Officer and a Director of Asset since 1989; Management Finance Corp. (a of the specialty finance company Portfolio serving the investment since 1993 management industry) (since October 2003). President, Unicorn Corporation (an investment and financial advisory services company) (since September 2000). Formerly, Chairman, Hellman, Jordan Management Co., Inc. (an investment management company) (2000-2003). Formerly, Advisory Director of Berkshire Capital Corporation (investment banking firm) (2002-2003). Formerly, Chairman of the Board, United Asset Management Corporation (a holding company owning institutional investment management firms) and Chairman, President and Director, UAM Funds (mutual funds) (1980-2000). Lynn A. Stout Trustee Since 1998 Professor of Law, University 195 None 9/14/57 of California at Los Angeles School of Law (since July 2001). Formerly, Professor of Law, Georgetown University Law Center. </Table> PRINCIPAL OFFICERS WHO ARE NOT TRUSTEES <Table> <Caption> POSITION(S) TERM OF WITH THE OFFICE AND NAME AND TRUST AND LENGTH OF PRINCIPAL OCCUPATION(S) DATE OF BIRTH THE PORTFOLIO SERVICE DURING PAST FIVE YEARS - ------------------------------------------------------------------------------------------------------------------------ Thomas E. Faust Jr. President of Since 2002 Executive Vice President of EVM, BMR, EVC and EV; Chief Investment 5/31/58 the Trust Officer of EVM and BMR and Director of EVC. Chief Executive Officer of Belair Capital Fund LLC, Belcrest Capital Fund LLC, Belmar Capital Fund LLC, Belport Capital Fund LLC and Belrose Capital Fund LLC (private investment companies sponsored by EVM). Officer of 54 registered investment companies managed by EVM or BMR. Duke E. Laflamme Vice Since 2001 Vice President of EVM and BMR. Officer of 11 registered 7/8/69 President investment companies managed by EVM or BMR. of the Trust Thomas H. Luster Vice Since 2002 Vice President of EVM and BMR. Officer of 15 registered investment 4/8/62 President of companies managed by EVM or BMR. the Trust Duncan W. Richardson President of Since 2002 Senior Vice President and Chief Equity Investment Officer of EVM and 10/26/57 the Portfolio BMR. Officer of 42 registered investment companies managed by EVM or BMR. Judith A. Saryan Vice Since 1999 Vice President of EVM and BMR. Previously, Portfolio Manager and 8/21/54 President of Equity Analyst for State Street Global Advisors (1980-1999). Officer the Portfolio of 25 registered investment companies managed by EVM or BMR. Alan R. Dynner Secretary Since 1997 Vice President, Secretary and Chief Legal Officer of BMR, EVM, EVD, 10/10/40 EV and EVC. Officer of 195 registered investment companies managed by EVM or BMR. William J. Austin, Jr. Treasurer of Since Vice President of EVM and BMR. Officer of 58 registered investment 12/27/51 the Portfolio 2002(2) companies managed by EVM or BMR. James L. O'Connor Treasurer of Since 1989 Vice President of BMR, EVM and EVD. Officer of 116 registered 4/1/45 the Trust investment companies managed by EVM or BMR. </Table> (1) Includes both master and feeder funds in a master-feeder structure. (2) Prior to 2002, Mr. Austin served as Assistant Treasurer of the Portfolio since 1993. The SAI for the Fund includes additional information about the Trustees and officers of the Fund and the Portfolio and can be obtained without charge by calling 1-800-225-6265. 25 <Page> ITEM 2. CODE OF ETHICS The registrant has adopted a code of ethics applicable to its Principal Executive Officer, Principal Financial Officer and Principal Accounting Officer. The registrant undertakes to provide a copy of such code of ethics to any person upon request, without charge, by calling 1-800-262-1122. ITEM 3. AUDIT COMMITTEE FINANCIAL EXPERT The registrant's Board has designated William H. Park, Samuel L. Hayes, III and Norton H. Reamer, each an independent trustee, as its audit committee financial experts. Mr. Park is a certified public accountant who is the President and Chief Executive Officer of Prizm Capital Management, LLC (a fixed income investment management firm). Previously, he served as Executive Vice President and Chief Financial Officer of United Asset Management Corporation ("UAM") (a holding company owning institutional investment management firms). Mr. Hayes is the Jacob H. Schiff Professor of Investment Banking Emeritus of the Harvard University Graduate School of Business Administration. Mr. Reamer is the President, Chief Executive Officer and a Director of Asset Management Finance Corp. (a specialty finance company serving the investment management industry) and is President of Unicorn Corporation (an investment and financial advisory services company). Formerly, Mr. Reamer was Chairman of Hellman, Jordan Management Co., Inc. (an investment management company) and Advisory Director of Berkshire Capital Corporation (an investment banking firm), Chairman of the Board of UAM and Chairman, President and Director of the UAM Funds (mutual funds). ITEM 4. PRINCIPAL ACCOUNTANT FEES AND SERVICES (a)-(d) The following table presents aggregate fees billed to the registrant for the fiscal years ended December 31, 2002, and 2003 by the registrant's principal accountant for professional services rendered for the audit of the registrant's annual financial statements and fees billed for other services rendered by the principal accountant during those periods. <Table> <Caption> YEARS ENDED DECEMBER 31, 2003 2002 - ----------------------------------------------------------------------- Audit Fees $ 30,975 $ 27,475 Audit-Related Fees(1) $ 0 $ 0 Tax Fees(2) $ 6,045 $ 5,475 All Other Fees(3) $ 0 $ 0 ----------------------------------- Total $ 37,020 $ 32,950 =================================== </Table> (1) Audit-related fees consist of the aggregate fees billed for assurance and related services that are reasonably related to the performance of the audit of the registrant's financial statements and are not reported under the category of audit fees. (2) Tax fees consist of the aggregate fees billed for professional services rendered by the principal accountant relating to tax compliance, tax advice, and tax planning and specifically include fees for tax return preparation and other related tax compliance/planning matters. (3) All other fees consist of the aggregate fees billed for products and services provided by the registrant's principal accountant other than audit, audit-related, and tax services. (e)(1) The registrant's audit committee has adopted policies and procedures relating to the pre-approval of services provided by the registrant's principal accountant (the "Pre-Approval Policies"). The Pre-Approval Policies establish a framework intended to assist the audit <Page> committee in the proper discharge of its pre-approval responsibilities. As a general matter, the Pre-Approval Policies (i) specify certain types of audit, audit-related, tax, and other services determined to be pre-approved by the audit committee; and (ii) delineate specific procedures governing the mechanics of the pre-approval process, including the approval and monitoring of audit and non-audit service fees. Unless a service is specifically pre-approved under the Pre-Approval Policies, it must be separately pre-approved by the audit committee. The Pre-Approval Policies and the types of audit and non-audit services pre-approved therein must be reviewed and ratified by the registrant's audit committee at least annually. The registrant's audit committee maintains full responsibility for the appointment, compensation, and oversight of the work of the registrant's principal accountant. (e)(2) No services described in paragraphs (b)-(d) above were approved by the registrant's audit committee pursuant to the "de minimis exception" set forth in Rule 2-01 (c)(7)(i)(C) of Regulation S-X. (f) Not applicable. (g) Aggregate non-audit fees (i.e., fees for audit-related, tax, and other services) billed by the registrant's principal accountant for services rendered to the registrant for each of the registrant's last two fiscal years (2002 and 2003) were $5,475 and $6,045, respectively. Aggregate non-audit fees (i.e., fees for audit-related, tax, and other services) billed by the registrant's principal accountant for services rendered to the Eaton Vance organization (which includes the registrant's investment adviser and any entity controlling, controlled by, or under common control with the adviser that provides ongoing services to the registrant) for each of the registrant's last two fiscal years (2002 and 2003) were $0 and $0, respectively. (h) The registrant's audit committee has considered whether the provision by the registrant's principal accountant of non-audit services to the registrant's investment adviser and any entity controlling, controlled by, or under common control with the adviser that provides ongoing services to the registrant that were not pre-approved pursuant to Rule 2-01(c)(7)(ii) of Regulation S-X is compatible with maintaining the principal accountant's independence. ITEM 5. AUDIT COMMITTEE OF LISTED REGISTRANTS Not required in this filing. ITEM 6. [RESERVED] ITEM 7. DISCLOSURE OF PROXY VOTING POLICIES AND PROCEDURES FOR CLOSED-END MANAGEMENT INVESTMENT COMPANIES Not required in this filing. ITEM 8. [RESERVED] <Page> ITEM 9. CONTROLS AND PROCEDURES (a) It is the conclusion of the registrant's principal executive officer and principal financial officer that the effectiveness of the registrant's current disclosure controls and procedures (such disclosure controls and procedures having been evaluated within 90 days of the date of this filing) provide reasonable assurance that the information required to be disclosed by the registrant has been recorded, processed, summarized and reported within the time period specified in the Commission's rules and forms and that the information required to be disclosed by the registrant has been accumulated and communicated to the registrant's principal executive officer and principal financial officer in order to allow timely decisions regarding required disclosure. (b) There have been no significant changes in the registrant's internal controls or in other factors that could significantly affect these controls subsequent to the date of their evaluation, including any corrective actions with regard to significant deficiencies and material weaknesses. ITEM 10. EXHIBITS (a)(1) Registrant's Code of Ethics - Not applicable (please see Item 2). (a)(2)(i) Treasurer's Section 302 certification. (a)(2)(ii) President's Section 302 certification. (b) Combined Section 906 certification. <Page> SIGNATURES Pursuant to the requirements of the Securities Exchange Act of 1934 and the Investment Company Act of 1940, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized. UTILITIES PORTFOLIO By: /S/ Duncan W. Richardson ------------------------ Duncan W. Richardson President Date: February 20, 2004 ----------------- Pursuant to the requirements of the Securities Exchange Act of 1934 and the Investment Company Act of 1940, this report has been signed below by the following persons on behalf of the registrant and in the capacities and on the dates indicated. By: /S/ William J. Austin Jr. ------------------------- William J. Austin Jr. Treasurer Date: February 20, 2004 ----------------- By: /S/ Duncan W. Richardson ------------------------ Duncan W. Richardson President Date: February 20, 2004 -----------------