UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM N-CSRS CERTIFIED SHAREHOLDER REPORT OF REGISTERED MANAGEMENT INVESTMENT COMPANIES Investment Company Act file number 811-05870 811-10171 Name of Fund: Merrill Lynch Senior Floating Rate Fund, Inc. Master Senior Floating Rate Trust Fund Address: P.O. Box 9011 Princeton, NJ 08543-9011 Name and address of agent for service: Robert C. Doll, Jr., Chief Executive Officer, Merrill Lynch Senior Floating Rate Fund, Inc. and Master Senior Floating Rate Trust, 800 Scudders Mill Road, Plainsboro, NJ, 08536. Mailing address: P.O. Box 9011, Princeton, NJ, 08543-9011 Registrant's telephone number, including area code: (609) 282-2800 Date of fiscal year end: 08/31/05 Date of reporting period: 09/01/04 - 02/28/05 Item 1 - Report to Stockholders Merrill Lynch Senior Floating Rate Fund, Inc. Semi-Annual Report February 28, 2005 (BULL LOGO) Merrill Lynch Investment Managers www.mlim.ml.com Mercury Advisors A Division of Merrill Lynch Investment Managers www.mercury.ml.com Merrill Lynch Senior Floating Rate Fund, Inc. seeks as high a level of current income and such preservation of capital as is consistent with investment in senior collateralized corporate loans made by banks and other financial institutions. This report, including the financial information herein, is transmitted for use only to the shareholders of Merrill Lynch Senior Floating Rate Fund, Inc. for their information. It is not a prospectus, circular or representation intended for use in the purchase of shares of the Fund or any securities mentioned in this report. Past performance results shown in this report should not be considered a representation of future performance. A description of the policies and procedures that the Fund uses to determine how to vote proxies relating to portfolio securities is available (1) without charge, upon request, by calling toll-free 1-800-MER-FUND (1-800-637-3863); (2) at www.mutualfunds.ml.com; and (3) on the Securities and Exchange Commission's Web site at http://www.sec.gov. Information about how the Fund voted proxies relating to securities held in the Fund's portfolio during the most recent 12-month period ended June 30 is available (1) at www.mutualfunds.ml.com and (2) on the Securities and Exchange Commission's Web site at http://www.sec.gov. Merrill Lynch Senior Floating Rate Fund, Inc. Box 9011 Princeton, NJ 08543-9011 (GO PAPERLESS LOGO) It's Fast, Convenient, & Timely! To sign up today, go to www.icsdelivery.com/live. Merrill Lynch Senior Floating Rate Fund, Inc. Officers and Directors/Trustees Robert C. Doll, Jr., President and Director/Trustee Ronald W. Forbes, Director/Trustee Cynthia A. Montgomery, Director/Trustee Jean Margo Reid, Director/Trustee Roscoe S. Suddarth, Director/Trustee Richard R. West, Director/Trustee Edward D. Zinbarg, Director/Trustee Joseph P. Matteo, Vice President Donald C. Burke, Vice President and Treasurer Jeffrey Hiller, Chief Compliance Officer Alice A. Pellegrino, Secretary Custodian The Bank of New York 100 Church Street New York, NY 10286 Transfer Agent Financial Data Services, Inc. 4800 Deer Lake Drive East Jacksonville, FL 32246-6484 800-637-3863 Effective January 1, 2005, Terry K. Glenn, President and Director/ Trustee and Kevin A. Ryan, Director/ Trustee of Merrill Lynch Senior Floating Rate Fund, Inc. and Master Senior Floating Rate Trust retired. The Fund's Board of Directors/Trustees wishes Messrs. Glenn and Ryan well in their retirements. Effective January 1, 2005, Robert C. Doll, Jr. became President and Director/Trustee of the Fund and the Trust. MERRILL LYNCH SENIOR FLOATING RATE FUND, INC., FEBRUARY 28, 2005 A Letter From the President Dear Shareholder Financial markets broadly posted positive returns over the most recent reporting period, with international equities providing some of the most impressive results. Total Returns as of February 28, 2005 6-month 12-month U.S. equities (Standard & Poor's 500 Index) + 9.99% + 6.98% International equities (MSCI Europe Australasia Far East Index) +21.18 +18.68 Fixed income (Lehman Brothers Aggregate Bond Index) + 1.26 + 2.43 Tax-exempt fixed income (Lehman Brothers Municipal Bond Index) + 2.40 + 2.96 High yield bonds (Credit Suisse First Boston High Yield Index) + 7.53 +11.21 The U.S. economy has continued to show resilience in the face of the Federal Reserve Board's (the Fed) continued interest rate hikes and, more recently, higher oil prices. The Fed's measured tightening program recently brought the federal funds rate to 2.75% en route to a more "neutral" short-term interest rate target (relative to inflation). Since the U.S. presidential election, progress has been monitored on many fronts in Washington, although concerns remain about the structural problems of debt and deficits, as reflected by a significant decline in the U.S. dollar. U.S. equities ended 2004 in a strong rally, but remained in a fairly narrow trading range for the first two months of 2005. Divergences were notable among sectors, with energy emerging as a clear leader. On the positive side, corporations have accelerated their hiring plans, capital spending remains reasonably robust and merger-and- acquisition activity has increased. Offsetting the positives are slowing corporate earnings growth, renewed energy price concerns and the potential for an economic slowdown. International equities, particularly in Asia, have benefited from higher economic growth rates (China recorded growth of 9.3% in 2004), stronger currencies and relatively reasonable valuations. The major action in the bond market has been a flattening of the yield curve. As short-term interest rates continued to rise, yields on the long end of the curve remained relatively stable - even declining at certain points since the Fed's monetary tightening program began in June 2004. This phenomenon has been largely attributed to continued foreign interest in U.S. bonds, which has served to absorb much of the excess supply. By period-end, many believed long-term yields were long overdue for a rise. Looking ahead, the environment is likely to be a challenging one for investors, with diversification and selectivity becoming increasingly important themes. With this in mind, we encourage you to meet with your financial advisor to review your goals and asset allocation and to rebalance your portfolio, as necessary, to ensure it remains aligned with your objectives and risk tolerance. As always, we thank you for trusting Merrill Lynch Investment Managers with your investment assets, and we look forward to serving you in the months and years ahead. Sincerely, (Robert C. Doll, Jr.) Robert C. Doll, Jr. President and Director/Trustee MERRILL LYNCH SENIOR FLOATING RATE FUND, INC., FEBRUARY 28, 2005 A Discussion With Your Fund's Portfolio Manager The Fund slightly outperformed its benchmark for the period, as security selection in the chemical, U.S. cable and services sectors had a positive effect on the relative return. Describe market conditions during the past six months. Throughout the period, the leverage loan market continued to benefit from the significant demand that it experienced since the beginning of 2004. This created an excess cash imbalance that was left virtually intact through the end of February 2005, as new inflows have continued to match the value of new issues. Demand in the marketplace has led to higher secondary-market loan prices and new issues with generally lower interest spreads versus London InterBank Offering Rate (LIBOR), and average new-issue allocation amounts per investor that are lower than their historical levels. A significant rise in LIBOR more than offset declines in the interest rate spreads on BB-rated and B-rated new issues during the period. Another positive development in the leveraged loan sector has been the improving default rate. As of the end of February 2005, the lagging 12-month institutional loan default rate stood at 1.36% by number of loans and 1.37% of principal amount, according to Standard & Poor's Leveraged Commentary & Data. Although this is a 12-month high due to the recent default of Tower Automotive Inc., the default rates are still well below the recent historical averages (since 1998) of 3.87% by number of loans and 4.18% by principal amount. How did the Fund perform during the period in light of the existing market conditions? For the six-month period ended February 28, 2005, the Common Stock of Merrill Lynch Senior Floating Rate Fund, Inc. had a net annualized yield of 3.93%, based on a period-end per share net asset value of $9.02 and $.176 per share income dividends. For the same period, the total investment return on the Fund's Common Stock was +3.13%, based on a change in per share net asset value from $8.91 to $9.02, and assuming reinvestment of all distributions. For the same period, the Fund's unmanaged benchmark index, the Credit Suisse First Boston (CSFB) Leveraged Loan Index, recorded a total return of +3.01%. Security selection in chemicals, U.S. cable and services benefited the Fund's performance during the period. However, the portfolio's holdings in the energy-other, transportation and steel sectors had a negative effect on the return. The Fund's strong performance in the chemical sector resulted primarily from our positions in Pioneer Cos., Inc. and GEO Specialty Chemicals, Inc. The value of Pioneer Companies, a security we acquired during a corporate restructuring, rose during the period on the strength of the chlor-alkali industry. GEO Specialty Chemicals experienced improved operating performance and reduced leverage, leading to a rally in the company's bond and stock prices. Our positions in the U.S. cable sector benefited from the strong returns of Century Cable Holdings LLC (an Adelphia company) and Charter Communications Operating LLC. The prices of securities of Century Cable, as well as other Adelphia companies in the portfolio, rallied as Adelphia nears the completion of its auction. Charter Communications' bank loan issue rallied on the company's recent refinancing to improve liquidity. The Fund's positive return in the service sector was due mainly to the robust performances of our holdings in Anthony Crane Rental LP and The Shaw Group, Inc. The former company's term loan security rallied as the company prepared to exit bankruptcy with a more favorable capital structure and the commercial construction industry showed signs of renewed vigor. Shaw Group, an engineering and consulting firm, announced better-than-expected earnings, thereby boosting the price of the company's stock, which we received as part of the restructuring of IT Group. Shaw Group acquired all of the assets and some liabilities of IT Group in 2002. The Fund's weak performances in the energy-other and transportation sectors resulted primarily from several companies calling at par value loans that had been priced above par in the market. At the end of the period, none of the Fund's holdings in the energy-other sector were priced below par value. MERRILL LYNCH SENIOR FLOATING RATE FUND, INC., FEBRUARY 28, 2005 Finally, the main contributor to the Fund's poor performance in the steel sector was our position in Acme Package Corp. stock. The shares of this distressed company declined in value as the Fund received cash payments, which were classified for accounting purposes as the return of principal. What changes were made to the portfolio during the period? During the period, the Master Senior Floating Rate Trust, of which the Fund invests all of its assets, purchased assets of approximately $282 million in par amount (face value), and experienced $226 million in repayments from issuers. In addition, we sold roughly $16 million in assets during the period because of the Trust's relatively high cash position. We normally seek to maintain a cash weighting of less than 5% of net assets; however, issuer repayments, and the robust demand for paper in the leveraged loan market made this an increasingly difficult task. How would you characterize the portfolio's position at the close of the period? At the end of the period, the portfolio was composed of 156 issuers spread among 26 industries. The Trust was underweight versus its composite benchmark in securities rated Ba or better and credits rated Caa or below, and was overweight in B-rated and unrated securities. Looking forward, we anticipate that many of the same factors that had an impact on leveraged loan securities in the past six months will continue to influence the fundamentals in the market. We believe the trend of small allocation amounts for issuances of new loans, lower interest rate spreads and above-par secondary market prices will continue, especially given the benign credit environment we expect over the next six months. A further benefit to the market during the period would be an increase in LIBOR. Therefore, we plan to continue to purchase assets predominately in the primary market, while selectively participating in the secondary market. Joseph P. Matteo Vice President and Portfolio Manager March 21, 2005 MERRILL LYNCH SENIOR FLOATING RATE FUND, INC., FEBRUARY 28, 2005 Disclosure of Expenses Shareholders of this Fund may incur the following charges: (a) expenses related to transactions, including sales charges, redemption fees and exchange fees; and (b) operating expenses, including advisory fees, distribution fees including 12(b)-1 fees, and other Fund expenses. The following example (which is based on a hypothetical investment of $1,000 invested on September 1, 2004 and held through February 28, 2005) is intended to assist shareholders both in calculating expenses based on an investment in the Fund and in comparing these expenses with similar costs of investing in other mutual funds. The first table below provides information about actual account values and actual expenses. In order to estimate the expenses a shareholder paid during the period covered by this report, shareholders can divide their account value by $1,000 and then multiply the result by the number in the first line under the heading entitled "Expenses Paid During the Period." The second table below provides information about hypothetical account values and hypothetical expenses based on the Fund's actual expense ratio and an assumed rate of return of 5% per year before expenses. In order to assist shareholders in comparing the ongoing expenses of investing in this Fund and other funds, compare the 5% hypothetical example with the 5% hypothetical examples that appear in other funds' shareholder reports. The expenses shown in the table are intended to highlight shareholders ongoing costs only and do not reflect any transactional expenses, such as sales charges, redemption fees or exchange fees. Therefore, the second table is useful in comparing ongoing expenses only, and will not help shareholders determine the relative total expenses of owning different funds. If these transactional expenses were included, shareholder expenses would have been higher. Expenses Paid Beginning Ending During the Period* Account Value Account Value September 1, 2004 September 1, February 28, to February 28, 2004 2005 2005 Actual Merrill Lynch Senior Floating Rate Fund, Inc. $1,000 $1,031.30 $7.25 Hypothetical (5% annual return before expenses)** Merrill Lynch Senior Floating Rate Fund, Inc. $1,000 $1,017.65 $7.20 * Expenses are equal to the annualized expense ratio of 1.44%, multiplied by the average account value over the period, multiplied by 181/365 (to reflect the one-half year period shown). Because the Fund is a feeder fund, the expense table example reflects the expenses of both the feeder fund and the master fund in which it invests. ** Hypothetical 5% annual return before expenses is calculated by pro-rating the number of days in the most recent fiscal half-year divided by 365. MERRILL LYNCH SENIOR FLOATING RATE FUND, INC., FEBRUARY 28, 2005 Statement of Assets and Liabilities Merrill Lynch Senior Floating Rate Fund, Inc. As of February 28, 2005 Assets Investment in Master Senior Floating Rate Trust (the "Trust"), at value (identified cost--$753,468,511) $ 722,829,384 Prepaid expenses 283,837 --------------- Total assets 723,113,221 --------------- Liabilities Payables: Dividends to shareholders $ 487,131 Other affiliates 149,250 Administrator 108,312 744,693 --------------- Accrued expenses and other liabilities 123,054 --------------- Total liabilities 867,747 --------------- Net Assets Net assets $ 722,245,474 ============== Net Assets Consist of Common Stock, par value $.10 per share; 1,000,000,000 shares authorized $ 8,004,630 Paid-in capital in excess of par 1,079,864,974 Undistributed investment income--net $ 236,875 Accumulated realized capital losses allocated from the Trust--net (335,221,878) Unrealized depreciation allocated from the Trust--net (30,639,127) --------------- Total accumulated losses--net (365,624,130) --------------- Net Assets--Equivalent to $9.02 per share based on 80,046,300 shares of capital stock outstanding $ 722,245,474 =============== See Notes to Financial Statements. MERRILL LYNCH SENIOR FLOATING RATE FUND, INC., FEBRUARY 28, 2005 Statement of Operations Merrill Lynch Senior Floating Rate Fund, Inc. For the Six Months Ended February 28, 2005 Investment Income Allocated from the Trust--Net Net investment income allocated from the Trust: Interest (including $774,290 from affiliates) $ 18,336,305 Facility and other fees 356,286 Expenses (3,699,680) --------------- Net investment income allocated from the Trust 14,992,911 --------------- Expenses Administration fees $ 903,258 Transfer agent fees 327,184 Tender offer fees 165,392 Printing and shareholder reports 34,699 Registration fees 32,767 Professional fees 18,124 Other 9,041 --------------- Total expenses 1,490,465 --------------- Investment income--net 13,502,446 --------------- Realized & Unrealized Gain Allocated from the Trust--Net Realized gain allocated from the Trust--net 464,803 Change in unrealized appreciation (depreciation) allocated from the Trust--net 9,055,143 --------------- Total realized and unrealized gain allocated from the Trust--net 9,519,946 --------------- Net Increase in Net Assets Resulting from Operations $ 23,022,392 =============== See Notes to Financial Statements. MERRILL LYNCH SENIOR FLOATING RATE FUND, INC., FEBRUARY 28, 2005 Statements of Changes in Net Assets Merrill Lynch Senior Floating Rate Fund, Inc. For the Six For the Months Ended Year Ended February 28, August 31, Increase (Decrease) in Net Assets: 2005 2004 Operations Investment income--net $ 13,502,446 $ 26,185,996 Realized gain (loss) allocated from the Trust--net 464,803 (64,296,777) Change in unrealized appreciation (depreciation) allocated from the Trust--net 9,055,143 109,360,252 --------------- --------------- Net increase in net assets resulting from operations 23,022,392 71,249,471 --------------- --------------- Dividends to Shareholders Investment income--net (13,502,440) (26,185,993) --------------- --------------- Net decrease in net assets resulting from dividends to shareholders (13,502,440) (26,185,993) --------------- --------------- Capital Share Transactions Net decrease in net assets derived from capital share transactions (44,069,223) (86,588,414) --------------- --------------- Net Assets Total decrease in net assets (34,549,271) (41,524,936) Beginning of period 756,794,745 798,319,681 --------------- --------------- End of period* $ 722,245,474 $ 756,794,745 =============== =============== * Undistributed investment income--net $ 236,875 $ 236,869 =============== =============== See Notes to Financial Statements. MERRILL LYNCH SENIOR FLOATING RATE FUND, INC., FEBRUARY 28, 2005 Financial Highlights Merrill Lynch Senior Floating Rate Fund, Inc. For the Six The following per share data and ratios Months Ended have been derived from information February 28, For the Year Ended August 31, provided in the financial statements. 2005 2004 2003+++++ 2002 2001 Per Share Operating Performance Net asset value, beginning of period $ 8.91 $ 8.40 $ 8.05 $ 8.82 $ 9.45 ------------ ------------ ------------ ------------ ------------ Investment income--net .17*** .30*** .38 .43 .79 Realized and unrealized gain (loss) allocated from the Trust--net .11 .51 .36 (.77) (.62) ------------ ------------ ------------ ------------ ------------ Total from investment operations .28 .81 .74 (.34) .17 ------------ ------------ ------------ ------------ ------------ Less dividends from investment income--net (.17) (.30) (.39) (.43) (.80) ------------ ------------ ------------ ------------ ------------ Net asset value, end of period $ 9.02 $ 8.91 $ 8.40 $ 8.05 $ 8.82 ============ ============ ============ ============ ============ Total Investment Return** Based on net asset value per share 3.13%+++ 9.73% 9.61% (4.09%) 1.52% ============ ============ ============ ============ ============ Ratios to Average Net Assets Expenses, excluding interest expense++ 1.44%* 1.44% 1.45% 1.41% 1.36% ============ ============ ============ ============ ============ Expenses++ 1.44%* 1.44% 1.46% 1.41% 1.36% ============ ============ ============ ============ ============ Investment income--net 3.74%* 3.41% 4.81% 5.07% 8.39% ============ ============ ============ ============ ============ Leverage Average amount of borrowings during the period (in thousands) -- -- $ 8,138++++ $ 3,374 -- ============ ============ ============ ============ ============ Average amount of borrowings per share during the period -- -- $ .07++++ $ .02 -- ============ ============ ============ ============ ============ Supplemental Data Net assets, end of period (in thousands) $ 722,245 $ 756,795 $ 798,320 $ 1,063,983 $ 1,778,295 ============ ============ ============ ============ ============ Portfolio turnover 25.40%+++++++ 76.45%+++++++ 56.56%+++++++ 89.46% 50.82% ============ ============ ============ ============ ============ * Annualized. ** Total investment returns exclude the early withdrawal charge, if any. The Fund is a continuously offered closed-end fund, the shares of which are offered at net asset value. No secondary market for the Fund's shares exists. *** Based on average shares outstanding. ++ Includes the Fund's share of the Trust's allocated expenses. ++++ Reflects the average amount of borrowings of the Fund prior to the Fund's conversion from a stand-alone investment company to a "feeder" fund on February 10, 2003. +++ Aggregate total investment return. +++++ On February 10, 2003, the Fund converted from a stand-alone investment company to a "feeder" fund that seeks to achieve its investment objective by investing all of its assets in the Trust, which has the same investment objective as the Fund. All investments are made at the Trust level. This structure is sometimes called a "master/feeder" structure. +++++++ Portfolio turnover for the Trust. See Notes to Financial Statements. MERRILL LYNCH SENIOR FLOATING RATE FUND, INC., FEBRUARY 28, 2005 Notes to Financial Statements Merrill Lynch Senior Floating Rate Fund, Inc. 1. Significant Accounting Policies: Merrill Lynch Senior Floating Rate Fund, Inc. (the "Fund") is registered under the Investment Company Act of 1940, as amended, as a continuously offered, non-diversified, closed-end management investment company. The Fund seeks to achieve its investment objective by investing all of its assets in the Master Senior Floating Rate Trust (the "Trust"), which has the same investment objective and strategies as the Fund. The value of the Fund's investment in the Trust reflects the Fund's proportionate interest in the net assets of the Trust. The performance of the Fund is directly affected by the performance of the Trust. The financial statements of the Trust, including the Schedule of Investments, are included elsewhere in this report and should be read in conjunction with the Fund's financial statements. The Fund's financial statements are prepared in conformity with U.S. generally accepted accounting principles, which may require the use of management accruals and estimates. Actual results may differ from these estimates. These unaudited financial statements reflect all adjustments, which are, in the opinion of management, necessary to present a fair statement of the results for the interim period. All such adjustments are of a normal, recurring nature. The percentage of the Trust owned by the Fund at February 28, 2005 was 68.0%. The following is a summary of significant accounting policies followed by the Fund. (a) Valuation of investments--The Fund records its investment in the Trust at fair value. Valuation of securities held by the Trust is discussed in Note 1b of the Trust's Notes to Financial Statements, which are included elsewhere in this report. (b) Investment income and expenses--The Fund records daily its proportionate share of the Trust's income, expenses and realized and unrealized gains and losses. In addition, the Fund accrues its own expenses. (c) Income taxes--It is the Fund's policy to comply with the requirements of the Internal Revenue Code applicable to regulated investment companies and to distribute substantially all of its taxable income to shareholders. Therefore, no federal income tax provision is required. (d) Prepaid registration fees--Prepaid registration fees are charged to expense as the related shares are issued. (e) Dividends and distributions--Dividends from net investment income are declared daily and paid monthly. Distributions of capital gains are recorded on the ex-dividend dates. (f) Investment transactions--Investment transactions in the Trust are accounted for on a trade date basis. 2. Transactions with Affiliates: The Fund has entered into an Administration Agreement with Fund Asset Management, L.P. ("FAM"). The general partner of FAM is Princeton Services, Inc. ("PSI"), an indirect, wholly-owned subsidiary of Merrill Lynch & Co., Inc. ("ML & Co."), which is the limited partner. The Fund pays a monthly fee at an annual rate of ..25% of the Fund's average daily net assets for the performance of administrative services (other than investment advice and related portfolio activities) necessary for the operation of the Fund. Financial Data Services, Inc. ("FDS"), a wholly-owned subsidiary of ML & Co., is the Fund's transfer agent. For the six months ended February 28, 2005, FAM Distributors, Inc. ("FAMD"), a wholly-owned subsidiary of Merrill Lynch Group, Inc., earned early withdrawal charges of $47,387 relating to the tender of the Fund's shares. Certain officers and/or directors of the Fund are officers and/or directors of FAM, PSI, FAMD, FDS, and/or ML & Co. 3. Capital Share Transactions: Transactions in capital shares were as follows: For the Six Months Dollar Ended February 28, 2005 Shares Amount Shares sold 2,396,674 $ 21,490,518 Shares issued to shareholders in reinvestment of dividends 720,287 6,466,811 -------------- --------------- Total issued 3,116,961 27,957,329 Shares tendered (8,046,496) (72,026,552) -------------- --------------- Net decrease (4,929,535) $ (44,069,223) ============== =============== MERRILL LYNCH SENIOR FLOATING RATE FUND, INC., FEBRUARY 28, 2005 Notes to Financial Statements (concluded) Merrill Lynch Senior Floating Rate Fund, Inc. For the Year Ended Dollar August 31, 2004 Shares Amount Shares sold 7,763,845 $ 68,254,923 Shares issued to shareholders in reinvestment of dividends 1,421,989 12,467,518 -------------- --------------- Total issued 9,185,834 80,722,441 Shares tendered (19,207,557) (167,310,855) -------------- --------------- Net decrease (10,021,723) $ (86,588,414) ============== =============== 4. Capital Loss Carryforward: On August 31, 2004, the Fund had a net capital loss carryforward of $279,684,820, of which $3,278,446 expires in 2005; $4,468,275 expires in 2006; $3,365,959 expires in 2007; $28,290,011 expires in 2008; $64,746,799 expires in 2009; $87,904,309 expires in 2010; $53,409,203 expires in 2011 and $34,221,818 expires in 2012. This amount will be available to offset like amounts of any future taxable gains. MERRILL LYNCH SENIOR FLOATING RATE FUND, INC., FEBRUARY 28, 2005 Schedule of Investments Master Senior Floating Rate Trust (in U.S. dollars) Face Industry++ Amount Senior Secured Floating Rate Loan Interests* Value Aerospace & KF Industries, Inc., Term Loan: Defense--2.0% $2,028,711 due 11/18/2012 $ 2,065,270 3,713,646 due 11/18/2013 3,780,569 2,076,923 Standard Aero Holdings Term Loan, due 8/24/2012 2,110,025 4,974,490 Titan Corp. Term Loan B, due 6/30/2009 5,045,222 Vought Aircraft Industries, Inc: 6,300,000 Term Loan, due 12/22/2011 6,398,438 1,200,000 Tranche B L/C Deposit, due 12/22/2010 1,219,500 --------------- 20,619,024 Automotive--2.6% 3,980,000 Grand Vehicle, First Lien Term Loan, due 7/23/2010 3,860,600 5,044,255 Metaldyne Corp. Term Loan D, due 12/31/2009 5,093,436 NFIL Holdings Corp.: 5,475,234 Term Loan, due 3/31/2010 5,560,785 762,186 Term Loan B, due 2/27/2010 774,095 TRW Automotive Inc.: 4,250,000 Term Loan B, due 6/30/2012 4,275,678 3,500,000 Term Loan E, due 11/02/2010 3,524,063 Tenneco Automotive, Inc.: 2,215,862 Term Loan B, due 12/12/2010 2,259,255 1,111,035 Tranche B-1 Credit Linked, due 12/12/2010 1,132,792 1,546,667 United Components, Inc. Term Loan C, due 6/30/2010 1,570,833 --------------- 28,051,537 Broadcasting--2.9% Cumulus Media Inc.: 1,704,643 Term Loan A, due 3/28/2009 1,724,354 2,643,857 Term Loan E, due 3/28/2010 2,684,617 1,995,000 Term Loan F, due 3/28/2010 2,006,637 6,982,500 Emmis Operating Company Term Loan B, due 11/10/2011 7,081,240 6,500,000 Entravision Communications Corp. Term Loan B, due 2/24/2012 6,600,210 5,000,000 Raycom Media, Inc. Term Loan B, due 3/22/2012 5,062,500 Sinclair Television Group: 700,000 Term Loan A, due 6/30/2009 703,282 1,050,000 Term Loan C, due 12/31/2009 1,059,844 4,000,000 Susquehanna Media Co. Term Loan B, due 3/31/2012 4,068,752 --------------- 30,991,436 Cable-- 50,000,000 Century Cable Holdings LLC Term Loan, due 6/30/2009 49,835,146 U.S.--18.0% 41,790,000 Charter Communications Operating LLC Tranche B Term Loan, due 4/07/2011 41,985,034 Frontiervision Operating Partners LP: 3,582,057 Term Loan A, due 9/30/2005 3,605,566 15,668,000 Term Loan B, due 3/31/2006 15,770,829 9,975,000 Hilton Head/UCA Inc. Term Loan B, due 3/31/2008 9,847,819 Inmarsat Facility: 4,240,451 Term Loan B, due 1/08/2011 4,263,167 4,250,418 Term Loan C, due 1/08/2012 4,288,217 Insight Midwest Holdings, LLC: 3,960,000 Term Loan, due 12/31/2009 4,033,323 5,445,000 Term Loan B, due 12/31/2009 5,547,094 6,125,000 Mediacom Broadband Group Tranche A Term Loan, due 3/31/2010 6,098,203 3,200,000 Mediacom Communications, LLC Tranche B Term Loan, due 3/31/2013 3,243,715 23,500,000 Olympus Cable Holdings, LLC Term Loan B, due 9/30/2010 23,404,543 16,871,988 PanAmSat Corp. Tranche B Term Loan, due 8/20/2011 17,158,322 1,990,000 Persona Cable Term Loan B, due 3/31/2011 2,013,010 --------------- 191,093,988 Chemicals--6.8% 9,753,963 CII Carbon, LLC Term Loan, due 6/25/2008 9,662,520 7,182,700 Cedar Chemical Corp., Term Loan B, due 10/31/2003 (d) 395,048 10,000,000 Cognis Deutschland GmbH & Co. KG Term Loan B, due 11/15/2013 10,437,500 19,139,617 Huntsman International LLC Term Loan B, due 12/31/2010 19,508,054 Invista B.V. Term Loan: 3,364,412 New Tranche B-1, due 4/29/2011 3,421,186 1,517,941 New Tranche B-2, due 4/29/2011 1,543,556 MERRILL LYNCH SENIOR FLOATING RATE FUND, INC., FEBRUARY 28, 2005 Schedule of Investments (continued) Master Senior Floating Rate Trust (in U.S. dollars) Face Industry++ Amount Senior Secured Floating Rate Loan Interests* Value Chemicals $ 737,064 Kraton Polymers Term Loan, due 12/16/2010 $ 749,655 (concluded) 1,492,500 Lyondell-Citgo Refining Term Loan, due 5/21/2007 1,509,291 5,160,610 Nalco Co. Tranche B Term Loan, due 11/04/2010 5,263,105 2,001,190 Pinnacle Polymers (Epsilon Products) Term Loan, due 12/15/2006 2,031,008 1,876,667 Polymer Group, Inc. First Lien Term Loan, due 4/27/2010 1,903,644 4,000,000 Rockwood Specialties Group, Inc. Tranche D Term Loan, due 12/10/2012 4,068,572 Wellman, Inc.: 4,000,000 First Lien Term Loan, due 2/10/2009 4,066,668 7,000,000 Second Lien Term Loan, due 2/10/2010 7,376,250 --------------- 71,936,057 Consumer 2,796,245 American Achievement Corp. Term Loan B, due 3/22/2011 2,841,684 Non-Durables--1.2% 3,000,000 Camelbak Products, LLC First Lien Term Loan, due 8/04/2011 3,035,625 1,990,000 Holmes Group, Inc. Term Loan, due 11/08/2010 2,012,387 4,850,000 Josten's Inc. Term Loan B, due 10/04/2011 4,929,821 --------------- 12,819,517 Diversified 4,000,000 Advertising Directory Solutions Holdings, Inc. Second Lien Media--3.2% Term Loan, due 10/01/2011 4,058,332 3,243,881 Dex Media West Inc. Term Loan B, due 3/09/2010 3,293,091 4,000,000 Freedom Communications, Inc. Term Loan B, due 5/18/2012 4,066,500 2,985,000 MediaNews Group, Inc. Term Loan C, due 12/15/2010 3,006,767 9,476,250 Metro-Goldwyn-Mayer Studios Inc. Term Loan B, due 4/30/2011 9,501,419 1,898,970 PRIMEDIA Inc. Term Loan B, due 6/30/2009 1,901,047 2,185,006 RH Donnelley Tranche D Term Loan, due 8/30/2011 2,220,637 3,153,204 Six Flags Entertainment Corp. Term Loan B, due 6/30/2009 3,208,385 942,857 Yankee Holdings Term Loan, due 5/01/2007 959,946 2,057,143 Yankee-Nets LLC Term Loan, due 5/01/2007 2,094,429 --------------- 34,310,553 Energy--1.4% 574,430 Dresser, Inc. Term Loan C, due 4/10/2009 581,970 5,000,000 Ocean Rig Norway AS Term Loan, due 6/01/2008 5,000,000 6,260,625 Pride Offshore Inc. Term Loan, due 7/07/2011 6,372,797 2,412,500 Tesoro Petroleum Corp. Term Loan, due 4/15/2008 2,471,305 --------------- 14,426,072 Energy--Exploration 1,970,100 Williams Production RMT Company Term Loan, due 5/31/2007 2,002,936 & Production--0.2% Food & Drug--0.4% 3,628,986 Pantry, Inc. Term Loan B, due 3/12/2011 3,691,361 Food & 876,629 American Seafood Term Loan B, due 3/31/2009 889,778 Tobacco--2.0% 1,500,000 Del Monte Term Loan B, due 2/08/2012 1,519,875 6,733,125 Doane Pet Care Enterprises, Inc. Term Loan, due 11/05/2009 6,855,163 3,105,601 Domino's Pizza Term Loan, due 6/25/2010 3,156,713 5,675,522 Dr. Pepper/Seven Up Bottling Group, Inc. Tranche B Term Loan, due 12/19/2010 5,783,357 3,338,848 Merisant Company Term Loan B, due 3/31/2007 3,345,108 --------------- 21,549,994 Gaming--2.0% 5,079,064 Ameristar Casinos Inc. Term Loan B, due 12/31/2006 5,163,717 3,980,000 Boyd Gaming Corp. Term Loan, due 6/30/2011 4,037,212 2,105,048 Global Cash Access LLC Term Loan B, due 3/10/2010 2,120,836 4,000,000 Marina District Finance Co., Inc. Term Loan, due 10/20/2011 4,045,000 5,300,000 Pinnacle Entertainment, Inc. Term Loan, due 8/27/2010 5,379,500 --------------- 20,746,265 Health Care--3.4% 775,970 Advanced Medical Term Loan, due 6/26/2009 784,943 4,987,500 Ardent Health Services, Inc. Term Loan, due 6/28/2011 5,057,639 1,995,000 Community Health Systems, Inc. Term Loan, due 8/19/2011 2,020,093 6,394,949 Davita Term Loan B, due 3/31/2009 6,418,931 2,016,250 Kinetic Concepts, Inc. Term Loan B, due 8/11/2010 2,036,412 Medical Specialties (d): 12,845,455 Axel, due 6/30/2004 3,211,364 4,418,182 Term Loan, due 9/23/2003 1,104,545 MERRILL LYNCH SENIOR FLOATING RATE FUND, INC., FEBRUARY 28, 2005 Schedule of Investments (continued) Master Senior Floating Rate Trust (in U.S. dollars) Face Industry++ Amount Senior Secured Floating Rate Loan Interests* Value Health Care $ 4,165,946 Medpointe Capital Partners, LLC Tranche B Term Loan, due 9/30/2008 $ 4,186,776 (concluded) 1,744,318 Orthofix International NV Term Loan B, due 12/15/2008 1,769,393 427,912 Rotech Healthcare, Inc. Term Loan B, due 3/31/2008 433,172 7,980,000 Vanguard Health Systems, Inc. Term Loan, due 9/30/2010 8,142,098 1,000,000 Vanguard Health Tl Ba Pr, due 9/30/2010 1,014,375 --------------- 36,179,741 Housing--3.6% General Growth Properties, Inc., Term Loan: 6,820,379 Tranche A, due 11/12/2007 6,889,360 9,650,000 Tranche B, due 11/12/2008 9,811,744 3,250,000 Goodman Global Holdings Term Loan, due 12/23/2011 3,308,906 6,222,656 Headwaters, Inc. Term Loan B, due 4/30/2011 6,313,401 1,972,841 Juno Lighting, Inc. First Lien Term Loan, due 11/21/2010 2,012,298 5,119,583 Lake at Las Vegas Joint Venture First Lien Term Loan, due 11/01/2009 5,198,512 4,975,000 Nortek, Inc. Term Loan, due 8/27/2011 5,067,246 --------------- 38,601,467 Information 5,118,850 VUTEK Inc. Term Loan, due 6/25/2010 5,144,444 Technology--0.5% Leisure--2.7% 3,710,455 True Temper Sports, Inc. Term Loan B, due 3/15/2011 3,696,540 Wyndham International, Inc.: 13,963,968 Term Loan I, due 6/30/2006 14,043,968 10,996,133 Term Loan II, due 4/01/2006 11,044,241 --------------- 28,784,749 Manufacturing--4.2% 7,517,441 Amsted Industries, Inc. Term Loan B-1, due 10/15/2010 7,665,445 1,950,000 Bucyrus International, Inc. Term Loan, due 7/01/2010 1,989,000 ChannelMaster Holdings, Inc. (d): 128,199 Revolving Credit, due 11/15/2004 24,358 2,309,504 Term Loan, due 11/15/2004 438,806 5,771,246 EaglePicher Holdings, Inc. Tranche B Term Loan, due 8/07/2009 5,761,625 4,375,000 High Voltage Engineering Corp.Term Loan A, due 7/31/2006 4,353,125 Invensys International Holdings Ltd.: 3,954,314 First Lien Term Loan, due 9/04/2009 4,025,986 2,000,000 Second Lien Term Loan, due 12/04/2009 2,058,750 2,190,405 Itron, Inc. Tranche B, due 12/17/2010 2,214,134 11,150,459 Mueller Group, Inc. Initial Term Loan, due 4/23/2011 11,282,870 1,316,854 SPX Corp. Term Loan B, due 9/30/2009 1,325,414 3,451,952 Trimas Corporation Term Loan B, due 12/31/2009 3,508,046 --------------- 44,647,559 Packaging--2.2% 1,736,000 BWAY Corporation Term Loan B, due 6/30/2011 1,764,210 11,000,000 Graham Packaging Co. LP Term Loan B, due 10/07/2011 11,214,500 Owens-Illinois Group Inc.: 4,841,371 French Tranche C-1 Term Loan, due 4/01/2008 4,932,147 750,000 Term Loan A, due 4/01/2007 763,219 404,959 Term Loan B, due 4/01/2008 412,501 4,104,433 Tekni-Plex, Inc. Term Loan B, due 6/21/2008 4,160,869 --------------- 23,247,446 Paper--1.2% 3,054,012 Boise Cascade Holdings, LLC Tranche B Term Loan, due 10/28/2011 3,113,757 3,422,057 Graphic Packaging Term Loan B, due 8/08/2010 3,486,648 Smurfit Stone Container Corp.: 2,008,590 Deposit Account, due 11/01/2010 2,044,369 3,434,608 Tranche B, due 11/01/2011 3,493,281 1,056,802 Tranche C, due 11/01/2011 1,075,032 --------------- 13,213,087 MERRILL LYNCH SENIOR FLOATING RATE FUND, INC., FEBRUARY 28, 2005 Schedule of Investments (continued) Master Senior Floating Rate Trust (in U.S. dollars) Face Industry++ Amount Senior Secured Floating Rate Loan Interests* Value Retail--1.1% $ 1,670,000 Advanced Stores Delay Draw Term Loan, due 9/30/2010 $ 1,695,573 2,450,000 American Reprographics Co. LLC Second Lien Term Loan, due 12/18/2009 2,609,250 4,000,000 Dollarama Group Term Loan B, due 11/18/2011 4,066,252 3,732,339 General Nutrition Centers, Inc. Tranche B Term Loan, due 12/05/2009 3,788,324 --------------- 12,159,399 Services--3.9% 2,400,000 Alliance Laundry Systems Term Loan, due 1/27/2012 2,431,001 Allied Waste North America, Inc. Term Loan: 10,300,212 due 1/15/2010 10,335,624 3,535,714 Tranche D, due 1/15/2010 3,545,660 5,940,150 Buhrmann US, Inc. Term Loan C-1 Facility, due 12/23/2010 6,070,091 3,929,243 Corrections Corp. of America Term Loan C, due 3/31/2008 3,995,549 6,106,136 Great Lakes Term Loan, due 12/23/2010 6,106,136 7,682,418 Prime Succession Inc. Term Loan, due 8/01/2003 (d) 1 5,254,236 URS Corp. Term Loan B, due 7/01/2008 5,285,436 United Rentals, Inc.: 3,308,333 Term Loan, due 2/14/2011 3,368,297 666,667 Tranche B, Credit-Linked Deposit, due 2/14/2011 677,292 --------------- 41,815,087 Steel--0.0% 9,920,779 Acme Metals, Inc. Term Loan, due 12/01/2005 (d) 1 Telecommunications-- 2,000,000 Alaska Communications Systems Holdings, Inc. Term Loan, due 2.1% 2/01/2012 2,021,562 8,046,000 Consolidated Communications, Inc. Term Loan C, due 10/14/2011 8,126,460 WilTel Communications, LLC: 8,976,316 First Lien Term Loan, due 6/30/2011 8,892,163 3,500,000 Second Lien Term Loan, due 12/31/2010 3,327,188 --------------- 22,367,373 Transportation--0.5% 5,194,118 Sirva Worldwide Tranche B Term Loan, due 12/01/2010 5,135,684 Utilities--8.0% 2,000,000 The AES Corp. Term Loan, due 4/30/2008 2,046,250 6,895,000 Calpine Corp. Second Lien Term Loan, due 7/15/2007 6,169,591 Calpine Generating Co. LLC Term Loan: 4,875,000 First Priority, due 4/01/2009 5,007,030 8,125,000 Second Priority, due 3/11/2010 7,964,531 11,910,000 Cogentrix Delaware Holdings, Inc. Term Loan, due 2/25/2009 11,939,775 5,771,000 Dynegy Holdings Inc. Term Loan, due 5/27/2010 5,879,206 El Paso Corp.: 3,937,500 Deposit Account, due 11/23/2009 4,005,485 6,536,250 Term Loan, due 11/23/2009 6,658,805 9,975,000 KGEN Term Loan, due 6/17/2011 10,099,687 NRG Energy: 1,050,000 Credit Linked Deposit, due 12/24/2007 1,065,094 1,350,000 Term Loan, due 12/24/2011 1,369,912 6,700,000 Reliant Energy, Inc. Term Loan, due 4/30/2010 6,810,671 2,364,000 TNP Enterprises, Inc. Term Loan, due 12/31/2006 2,396,505 9,907,692 Texas Genco Initial Term Loan, due 12/14/2011 10,077,639 3,500,000 Tucson Electric Power Company Term Loan, due 6/30/2009 3,536,460 --------------- 85,026,641 Wireless 3,000,000 American Towers Term Loan B, due 8/31/2011 3,043,827 Communications-- 4,257,000 Centennial Cellular Operating Co. Term Loan, due 2/09/2011 4,331,498 3.4% 4,500,000 Nextel Partners Operating Corp. Tranche C Term Loan, due 5/31/2011 4,567,900 12,641,487 SBA Senior Finance, Inc. Tranche C Term Loan, due 10/31/2008 12,841,640 11,500,000 SpectraSite Communications Term Loan B, due 5/01/2012 11,628,179 --------------- 36,413,044 Total Investments in Senior Secured Floating Rate Loan Interests (Cost--$873,063,958)--79.5% 844,974,462 MERRILL LYNCH SENIOR FLOATING RATE FUND, INC., FEBRUARY 28, 2005 Schedule of Investments (continued) Master Senior Floating Rate Trust (in U.S. dollars) Face Industry++ Amount Corporate Debt Value Broadcasting--0.6% $6,000,000 Paxson Communications Corp., 5.41% due 1/15/2010 (a)(b) $ 6,135,000 250,000 XM Satellite Radio, Inc., 8.243% due 5/01/2009 (a) 257,188 --------------- 6,392,188 Cable--U.S.--0.1% 500,000 Intelsat Bermuda Ltd., 7.794% due 1/15/2012 (a)(b) 513,750 Chemicals--1.0% 1,100,000 Crompton Corp., 8.71% due 8/01/2010 (a) 1,193,500 6,525,000 GEO Speciality Chemicals, Inc., 11.064% due 12/31/2009 (h) 6,965,438 1,662,678 PCI Chemicals Canada, Inc., 10% due 12/31/2008 1,779,065 269,797 Pioneer Cos., Inc., 6.05% due 12/31/2006 (a) 284,636 --------------- 10,222,639 Diversified 250,000 Universal City Florida Holding Co. I/II, 7.493% due 5/01/2010 (a)(b) 261,875 Media--0.0% Food & Drug--0.0% 250,000 Duane Reade Inc., 7.51% due 12/15/2010 (a)(b) 250,000 Leisure--0.9% 9,200,000 Felcor Lodging LP, 6.874% due 6/01/2011 (a) 9,763,500 Paper--0.0% 250,000 Boise Cascade LLC, 5.535% due 10/15/2012 (a)(b) 258,125 Telecommunications-- 9,500,000 Qwest Communications International, 6.294% due 2/15/2009 (a)(b) 9,690,000 1.6% 7,000,000 Time Warner Telecom Holdings, Inc., 6.794% due 2/15/2011 (a) 7,262,500 --------------- 16,952,500 Wireless 250,000 Rogers Wireless Communications, Inc., 6.135% due 12/15/2010 (a) 263,750 Communications-- 0.0% Total Investments in Corporate Debt (Cost--$47,435,294)--4.2% 44,878,327 Shares Held Common Stocks Chemicals--0.1% 39,151 GEO Specialty Chemicals, Inc. (g) 587,265 22,595 Pioneer Cos., Inc. (g) 601,479 --------------- 1,188,744 Consumer 6,306 Holmes Products Corporation (g) 0 Non-Durables--0.0% Metals & Mining--0.0% 51,714 Acme Package Corp. Senior Holdings (g) 142,214 Services--0.1% 44,744 The Shaw Group, Inc. (g) 930,675 Total Investments in Common Stocks (Cost--$641,868)--0.2% 2,261,633 Warrants (c) Paper--0.0% 57 Cellu Tissue Holdings, Inc. Series A (expires 9/28/2011) 0 Total Investments in Warrants (Cost--$1)--0.0% 0 MERRILL LYNCH SENIOR FLOATING RATE FUND, INC., FEBRUARY 28, 2005 Schedule of Investments (concluded) Master Senior Floating Rate Trust (in U.S. dollars) Beneficial Industry++ Interest Other Interests (e) Value Health Care--0.0% $ 14,398 MEDIQ Incorporated (Preferred Stock Escrow due 2/01/2006) $ 0 17,263,637 Medical Specialties Acquisition LLC 0 17,263,637 Medical Specialties Mezzanine LLC 0 --------------- 0 Total Investments in Other Interests (Cost--$0)--0.0% 0 Face Amount Short-Term Securities $152,752,954 Merrill Lynch Liquidity Series, LLC Cash Sweep Series I (f) 152,752,954 Total Investments in Short-Term Securities (Cost--$152,752,954)--14.4% 152,752,954 Total Investments (Cost--$1,073,894,075+++)--98.3% 1,044,867,376 Other Assets Less Liabilities--1.7% 17,706,502 --------------- Net Assets--100.0% $ 1,062,573,878 =============== (a) Floating rate note. (b) The security may be offered and sold to "qualified institutional buyers" under Rule 144A of the Securities Act of 1933. (c) Warrants entitle the Trust to purchase a predetermined number of shares of common stock and are non-income producing. The purchase price and number of shares are subject to adjustment under certain conditions until the expiration date. (d) Non-income producing security; issuer filed for bankruptcy or is in default of interest payments. (e) Other Interests represent beneficial interest in liquidation trusts and other reorganization entities and are non-income producing. (f) Investments in companies considered to be an affiliate of the Trust (such companies are defined as "Affiliated Companies" in Section 2(a)(3) of the Investment Company Act of 1940) were as follows: Net Interest Affiliate Activity Income Merrill Lynch Liquidity Series, LLC Cash Sweep Series I $(41,581,561) $1,107,171 (g) Non-income producing security. (h) Convertible security. * Senior secured floating rate loan interests in which the Trust invests generally pay interest at rates that are periodically redetermined by reference to a base lending rate plus a premium. These base lending rates are generally (i) the lending rate offered by one or more major European banks, such as LIBOR (London InterBank Offered Rate), (ii) the prime rate offered by one or more major U.S. banks or (iii) the certificate of deposit rate. ++ For Trust compliance purposes, "Industry" means any one or more of the industry sub-classifications used by one or more widely recognized market indexes or ratings group indexes, and/or as defined by Trust management. This definition may not apply for purposes of this report, which may combine industry sub-classifications for reporting ease. +++ The cost and unrealized appreciation (depreciation) of investments as of February 28, 2005, as computed for federal income tax purposes, were as follows: Aggregate cost $ 1,074,023,067 ================ Gross unrealized appreciation $ 13,592,985 Gross unrealized depreciation (42,748,676) ---------------- Net unrealized depreciation $ (29,155,691) ================ See Notes to Financial Statements. MERRILL LYNCH SENIOR FLOATING RATE FUND, INC., FEBRUARY 28, 2005 Statement of Assets and Liabilities Master Senior Floating Rate Trust As of February 28, 2005 Assets Investments in unaffiliated securities, at value (identified cost--$921,141,121) $ 892,114,422 Investments in affiliated securities, at value (identified cost--$152,752,954) 152,752,954 Cash 4,447,460 Unfunded loan commitment 15,457 Receivables: Securities sold $ 19,276,576 Interest (including $10,257 from affiliates) 5,855,446 Contributions 1,802,109 Commitment fees 93,959 Principal paydowns 5,625 27,033,715 --------------- Prepaid expenses 14,503 --------------- Total assets 1,076,378,511 --------------- Liabilities Payables: Securities purchased 8,056,493 Investment adviser 605,084 Other affiliates 9,150 8,670,727 --------------- Deferred income 3,031 Accrued expenses and other liabilities 5,130,875 --------------- Total liabilities 13,804,633 --------------- Net Assets Net assets $ 1,062,573,878 =============== Net Assets Consist of Investors' capital $ 1,091,585,120 Unrealized depreciation--net (29,011,242) --------------- Net Assets $ 1,062,573,878 =============== See Notes to Financial Statements. MERRILL LYNCH SENIOR FLOATING RATE FUND, INC., FEBRUARY 28, 2005 Statement of Operations Master Senior Floating Rate Trust For the Six Months Ended February 28, 2005 Investment Income Interest (including $1,107,171 from affiliates) $ 26,234,896 Facility and other fees 509,858 --------------- Total income 26,744,754 --------------- Expenses Investment advisory fees $ 4,915,511 Accounting services 181,233 Professional fees 100,390 Custodian fees 40,895 Trustees' fees and expenses 26,723 Pricing fees 5,747 Printing and shareholder reports 1,320 Other 15,105 --------------- Total expenses 5,286,924 --------------- Investment income--net 21,457,830 --------------- Realized & Unrealized Gain--Net Realized gain on investments--net 696,962 Change in unrealized appreciation (depreciation) on: Investments--net 12,673,008 Unfunded corporate loans--net 226,190 12,899,198 --------------- --------------- Total realized and unrealized gain--net 13,596,160 --------------- Net Increase in Net Assets Resulting from Operations $ 35,053,990 =============== See Notes to Financial Statements. MERRILL LYNCH SENIOR FLOATING RATE FUND, INC., FEBRUARY 28, 2005 Statements of Changes in Net Assets Master Senior Floating Rate Trust For the Six For the Months Ended Year Ended February 28, August 31, Increase (Decrease) in Net Assets: 2005 2004 Operations Investment income--net $ 21,457,830 $ 36,846,436 Realized gain (loss)--net 696,962 (66,942,419) Change in unrealized appreciation (depreciation)--net 12,899,198 121,530,179 --------------- --------------- Net increase in net assets resulting from operations 35,053,990 91,434,196 --------------- --------------- Capital Transactions Proceeds from contributions 82,495,978 250,140,432 Fair value of withdrawals (107,857,198) (231,571,350) --------------- --------------- Net increase (decrease) in net assets derived from capital transactions (25,361,220) 18,569,082 --------------- --------------- Net Assets Total increase in net assets 9,692,770 110,003,278 Beginning of period 1,052,881,108 942,877,830 --------------- --------------- End of period $ 1,062,573,878 $ 1,052,881,108 =============== =============== See Notes to Financial Statements. Statement of Cash Flows Master Senior Floating Rate Trust For the Six Months Ended February 28, 2005 Cash Provided by Operating Activities Net increase in net assets resulting from operations $ 35,053,990 Adjustments to reconcile net increase in net assets resulting from operations to net cash provided by operating activities: Increase in receivables (1,651,576) Decrease in other assets 158,853 Increase in other liabilities 5,610,945 Realized and unrealized gain--net (13,596,160) Amortization of premium and discount 97,907 Proceeds from sales and paydowns of long-term securities 206,038,341 Purchases of long-term securities (314,944,954) Purchases of short-term investments (461,693,253) Proceeds from sales and maturities of short-investments 553,511,092 --------------- Net cash provided by operating activities 8,585,185 --------------- Cash Used for Financing Activities Cash receipts on capital contributions 85,737,097 Cash payments on capital withdrawals (107,857,198) --------------- Net cash used for financing activities (22,120,101) --------------- Cash Net decrease in cash (13,534,916) Cash at beginning of period 17,982,376 --------------- Cash at end of period $ 4,447,460 =============== See Notes to Financial Statements. MERRILL LYNCH SENIOR FLOATING RATE FUND, INC., FEBRUARY 28, 2005 Financial Highlights Master Senior Floating Rate Trust For the Period For the Six October 6, Months Ended 2000++ to The following ratios have been derived from February 28, For the Year Ended August 31, August 31, from information provided in the financial statements. 2005 2004 2003 2002 2001 Total Investment Return** Total investment return 3.34%+++ 10.15% 11.07% (4.66%) -- ========== ========== ========== ========== ========== Ratios to Average Net Assets Expenses, excluding interest expense 1.02%* 1.02% 1.04% 1.09% 1.06%* ========== ========== ========== ========== ========== Expenses 1.02%* 1.02% 1.05% 1.12% 1.06%* ========== ========== ========== ========== ========== Investment income--net 4.15%* 3.81% 4.80% 5.31% 7.92%* ========== ========== ========== ========== ========== Leverage Amount of borrowings outstanding, end of period (in thousands) -- -- -- $ 13,000 -- ========== ========== ========== ========== ========== Average amount of borrowings outstanding during the period (in thousands) -- -- $ 3,187 $ 3,959 -- ========== ========== ========== ========== ========== Supplemental Data Net assets, end of period (in thousands) $1,062,574 $1,052,881 $ 942,878 $ 182,205 $ 376,931 ========== ========== ========== ========== ========== Portfolio turnover 25.40% 76.45% 56.56% 36.77% 19.53% ========== ========== ========== ========== ========== * Annualized. ** Total investment return is required to be disclosed for fiscal years beginning after December 15, 2000. ++ Commencement of operations. +++ Aggregate total investment return. See Notes to Financial Statements. MERRILL LYNCH SENIOR FLOATING RATE FUND, INC., FEBRUARY 28, 2005 Notes to Financial Statements Master Senior Floating Rate Trust 1. Significant Accounting Policies: Master Senior Floating Rate Trust (the "Trust") is registered under the Investment Company Act of 1940, as amended, and is organized as a Delaware statutory trust. The Declaration of Trust permits the Trustees to issue nontransferable interests in the Trust, subject to certain limitations. The Trust's financial statements are prepared in conformity with U.S. generally accepted accounting principles, which may require the use of management accruals and estimates. Actual results may differ from these estimates. These unaudited financial statements reflect all adjustments, which are, in the opinion of management, necessary to present a fair statement of the results for the interim period. All such adjustments are of a normal, recurring nature. The following is a summary of significant accounting policies followed by the Trust. (a) Loan participation interests--The Trust primarily invests in senior secured floating rate loan interests ("Loan Interests") with collateral having a market value, at the time of acquisition by the Trust, which Trust management believes equals or exceeds the principal amount of the Corporate Loan. The Trust may invest up to 20% of its total assets in loans made on an unsecured basis. Because agents, banks and intermediate participants from whom the Trust purchases the loan interest are primarily financial institutions, the Trust's investment in Corporate Loans at February 28, 2005 could be considered to be concentrated in the industry group consisting of financial institutions. (b) Valuation of investments--Loan Interests are valued in accordance with guidelines established by the Board of Trustees. Loan Interests are valued at the mean between the last available bid and asked prices from one or more brokers or dealers as obtained from Loan Pricing Corporation. For the limited number of Loan Interests for which no reliable price quotes are available, such Loan Interests will be valued by Loan Pricing Corporation through the use of pricing matrixes to determine valuations. If the pricing service does not provide a value for the loan interests, the Investment Adviser will value the Loan Interests at fair value, which is intended to approximate market value. Securities that are held by the Trust that are traded on stock exchanges or the Nasdaq National Market are valued at the last sale price or official close price on the exchange on which such securities are traded, as of the close of business on the day the securities are being valued or, lacking any sales, at the last available bid price for long positions, and at the last available ask price for short positions. In cases where securities are traded on more than one exchange, the securities are valued on the exchange designated as the primary market by or under the authority of the Board of Trustees of the Trust. Long positions in securities traded in the over-the-counter ("OTC") market, Nasdaq Small Cap or Bulletin Board are valued at the last available bid price or yield equivalent obtained from one or more dealers or pricing services approved by the Board of Trustees of the Trust. Short positions in securities traded in the OTC market are valued at the last available ask price. Portfolio securities that are traded both in the OTC market and on a stock exchange are valued according to the broadest and most representative market. When the Trust writes an option, the amount of the premium received is recorded on the books of the Trust as an asset and an equivalent liability. The amount of the liability is subsequently valued to reflect the current market value of the option written, based on the last sale price in the case of exchange-traded options or, in the case of options traded in the OTC market, the last ask price. Options purchased by the Trust are valued at their last sale price in the case of exchange-traded options or, in the case of options traded in the OTC market, the last bid price. The value of swaps, including interest rate swaps, caps and floors, will be determined by obtaining dealer quotations. Other investments, including futures contracts and related options, are stated at market value. Obligations with remaining maturities of 60 days or less are valued at amortized cost unless the Investment Adviser believes that this method no longer produces fair valuations. Repurchase agreements will be valued at cost plus accrued interest. The Trust employs certain pricing services to provide securities prices for the Trust. Securities and assets for which market quotations are not readily available are valued at fair value as determined in good faith by or under the direction of the Board of Trustees of the Trust, including valuations furnished by the pricing services retained by the Trust, which may use a matrix system for valuations. The procedures of a pricing service and its valuations are reviewed by the officers of the Trust under the general supervision of the Board of Trustees. Such valuations and procedures will be reviewed periodically by the Trustees. MERRILL LYNCH SENIOR FLOATING RATE FUND, INC., FEBRUARY 28, 2005 Notes to Financial Statements (continued) Master Senior Floating Rate Trust Generally, trading in foreign securities, as well as U.S. government securities and money market instruments, is substantially completed each day at various times prior to the close of business on the New York Stock Exchange ("NYSE"). The values of such securities used in computing the net assets of the Trust are determined as of such times. Foreign currency exchange rates also are generally determined prior to the close of business on the NYSE. Occasionally, events affecting the values of such securities and such exchange rates may occur between the times at which they are determined and the close of business on the NYSE that may not be reflected in the computation of the Trust's net assets. If events (for example, a company announcement, market volatility or a natural disaster) occur during such periods that are expected to materially affect the value of such securities, those securities may be valued at their fair value as determined in good faith by the Board of Trustees or by the Investment Adviser using a pricing service and/or procedures approved by the Board of Trustees. (c) Derivative financial instruments--The Trust may engage in various portfolio investment strategies both to increase the return of the Trust and to hedge, or protect, its exposure to interest rate movements and movements in the securities markets. Losses may arise due to changes in the value of the contract or if the counterparty does not perform under the contract. * Swaps--The Trust may enter into swap agreements, which are over- the-counter contracts in which the Trust and counterparty agree to make periodic net payments on a specified notional amount. The net payments can be made for a set period of time or may be triggered by a predetermined credit event. The net periodic payments may be based on a fixed or variable interest rate; the change in market value of a specified security, basket of securities, or index; or the return generated by a security. These periodic payments received or made by the Fund are recorded in the accompanying Statement of Operations as realized gains or losses, respectively. Gains or losses are also realized upon termination of the swap agreements. Swaps are marked- to-market daily based on dealer-supplied valuations and changes in value are recorded as unrealized appreciation (depreciation). Risks include changes in the returns of the underlying instruments, failure of the counterparties to perform under the contracts' terms and the possible lack of liquidity with respect to the swap agreements. (d) Income taxes--The Trust is classified as a partnership for federal income tax purposes. As such, each investor in the Trust is treated as owner of its proportionate share of the net assets, income, expenses and realized and unrealized gains and losses of the Trust. Therefore, no federal income tax provision is required. It is intended that the Trust's assets will be managed so an investor in the Trust can satisfy the requirements of subchapter M of the Internal Revenue Code. (e) Security transactions and investment income--Security transactions are recorded on the dates the transactions are entered into (the trade dates). Realized gains and losses on security transactions are determined on the identified cost basis. Dividend income is recorded on the ex-dividend dates. Interest income is recognized on the accrual basis. The Trust amortizes all premiums and discounts on debt securities. (f) Securities lending--The Trust may lend securities to financial institutions that provide cash or securities issued or guaranteed by the U.S. government as collateral, which will be maintained at all times in an amount equal to at least 100% of the current market value of the loaned securities. The market value of the loaned securities is determined at the close of business of the Trust and any additional required collateral is delivered to the Trust on the next business day. Where the Trust receives securities as collateral for the loaned securities, it receives a fee from the borrower. The Trust typically receives the income on the loaned securities, but does not receive the income on the collateral. Where the Trust receives cash collateral, it may invest such collateral and retain the amount earned on such investment, net of any amount rebated to the borrower. Loans of securities are terminable at any time and the borrower, after notice, is required to return borrowed securities within five business days. The Trust may pay reasonable finder's, lending agent, administrative and custodial fees in connection with its loans. In the event that the borrower defaults on its obligation to return borrowed securities because of insolvency or for any other reason, the Trust could experience delays and costs in gaining access to the collateral. The Trust also could suffer a loss where the value of the collateral falls below the market value of the borrowed securities, in the event of borrower default or in the event of losses on investments made with cash collateral. MERRILL LYNCH SENIOR FLOATING RATE FUND, INC., FEBRUARY 28, 2005 Notes to Financial Statements (concluded) Master Senior Floating Rate Trust 2. Investment Advisory Agreement and Transactions with Affiliates: The Trust has entered into an Investment Advisory Agreement with Fund Asset Management, L.P. ("FAM"). The general partner of FAM is Princeton Services, Inc. ("PSI"), an indirect, wholly-owned subsidiary of Merrill Lynch & Co., Inc. ("ML & Co."), which is the limited partner. FAM is responsible for the management of the Trust's portfolio and provides the necessary personnel, facilities, equipment and certain other services necessary to the operations of the Trust. For such services, the Trust pays a monthly fee at an annual rate of .95% of the average daily value of the Trust's net assets. The Trust has received an exemptive order from the Securities and Exchange Commission permitting it to lend portfolio securities to Merrill Lynch, Pierce, Fenner & Smith Incorporated, an affiliate of FAM, or its affiliates. Pursuant to that order, the Trust also has retained Merrill Lynch Investment Managers, LLC ("MLIM, LLC"), an affiliate of FAM, as the securities lending agent for a fee based on a share of the returns on investment of cash collateral. MLIM, LLC may, on behalf of the Trust, invest cash collateral received by the Trust for such loans, among other things, in a private investment company managed by MLIM, LLC or in registered money market funds advised by FAM or its affiliates. For the six months ended February 28, 2005, the Trust reimbursed FAM $12,592 for certain accounting services. Certain officers and/or trustees of the Trust are officers and/or directors of FAM, PSI and/or ML & Co. 3. Investments: Purchases and sales (including paydowns) of investments, excluding short-term securities, for the six months ended February 28, 2005 were $311,153,670 and $225,306,906, respectively. 4. Unfunded Loan Interests: As of February 28, 2005, the Trust had unfunded loan commitments of approximately $31,102,000 which would be extended at the option of the borrower, pursuant to the following loan agreement: Unfunded Commitment Borrower (In Thousands) Advanced Medical $1,000 Celaneses Holdings TLC $1,916 Pinnacle Entertainment,Inc. $4,594 NFIL Holdings Corp. $5,000 Saguaro Utility Group $7,500 Texas Genco $4,092 Vanguard Health Systems, Inc. $1,000 Vought Aircraft Industries, Inc. $6,000 5. Short-Term Borrowings: The Trust, along with certain other funds managed by FAM and its affiliates, is a party to a $500,000,000 credit agreement with a group of lenders. The Trust may borrow under the credit agreement to fund shareholder redemptions and for other lawful purposes other than for leverage. The Trust may borrow up to the maximum amount allowable under the Trust's current prospectus and statement of additional information, subject to various other legal, regulatory or contractual limits. The Trust pays a commitment fee of .07% per annum based on the Trust's pro rata share of the unused portion of the credit agreement. Amounts borrowed under the credit agreement bear interest at a rate equal to, at each Trust's election, the federal funds rate plus .50% or a base rate as defined in the credit agreement. The Trust did not borrow under the credit agreement during the six months ended February 28, 2005. On November 26, 2004, the credit agreement was renewed for one year under substantially the same terms. MERRILL LYNCH SENIOR FLOATING RATE FUND, INC., FEBRUARY 28, 2005 Portfolio Information Master Senior Floating Rate Trust As of February 28, 2005 Percent of Ten Largest Holdings Net Assets Century Cable Holdings LLC 4.7% Charter Communications Operating LLC 4.0 Wyndham International, Inc.* 2.4 Olympus Cable Holdings, LLC 2.2 Huntsman International LLC 1.8 PanAmSat Corp. Tranche B 1.6 Frontiervision Operating Partners LP* 1.8 Allied Waste North America, Inc.* 1.3 SBA Senior Finance, Inc. 1.2 Calpine Generating Co. LLC* 1.2 *Includes combined holdings and/or affiliates, where applicable. Percent of Five Largest Industries* Net Assets Cable--U.S. 18.1% Chemicals 7.9 Utilities 8.0 Manufacturing 4.2 Health Care 3.4 * For Trust compliance purposes, "Industries" means any one or more of the industry sub-classifications used by one or more widely recognized market indexes or ratings group indexes, and/or as defined by Trust management. This definition may not apply for purposes of this report, which may combine industry sub-classifications for reporting ease. Percent of Quality Ratings by Total S&P/Moody's Investments BBB/Baa 0.1% BB/Ba 27.7 B/B 43.8 CCC/Caa 6.9 NR (Not Rated) 6.7 Other* 14.8 * Includes portfolio holdings in common stocks, warrants, other interests and short-term investments. MERRILL LYNCH SENIOR FLOATING RATE FUND, INC., FEBRUARY 28, 2005 Availability of Quarterly Schedule of Investments The Fund files its complete schedule of portfolio holdings with the Securities and Exchange Commission ("SEC") for the first and third quarters of each fiscal year on Form N-Q. The Fund's Forms N-Q are available on the SEC's Web site at http://www.sec.gov. The Fund's Forms N-Q may also be reviewed and copied at the SEC's Public Reference Room in Washington, DC. Information on the operation of the Public Reference Room may be obtained by calling 1-800-SEC-0330. Electronic Delivery The Fund offers electronic delivery of communications to its shareholders. In order to receive this service, you must register your account and provide us with e-mail information. To sign up for this service, simply access this Web site at http://www.icsdelivery.com/live and follow the instructions. When you visit this site, you will obtain a personal identification number (PIN). You will need this PIN should you wish to update your e-mail address, choose to discontinue this service and/or make any other changes to the service. This service is not available for certain retirement accounts at this time. MERRILL LYNCH SENIOR FLOATING RATE FUND, INC., FEBRUARY 28, 2005 Item 2 - Code of Ethics - Not Applicable to this semi-annual report Item 3 - Audit Committee Financial Expert - Not Applicable to this semi-annual report Item 4 - Principal Accountant Fees and Services - Not Applicable to this semi-annual report Item 5 - Audit Committee of Listed Registrants - Not Applicable to this semi-annual report Item 6 - Schedule of Investments - Not Applicable Item 7 - Disclosure of Proxy Voting Policies and Procedures for Closed-End Management Investment Companies - Not Applicable to this semi-annual report Item 8 - Portfolio Managers of Closed-End Management Investment Companies - Not Applicable to this semi-annual report Item 9 - Purchases of Equity Securities by Closed-End Management Investment Company and Affiliated Purchasers - Not Applicable Item 10 - Submission of Matters to a Vote of Security Holders - Not Applicable Item 11 - Controls and Procedures 11(a) - The registrant's certifying officers have reasonably designed such disclosure controls and procedures to ensure material information relating to the registrant is made known to us by others particularly during the period in which this report is being prepared. The registrant's certifying officers have determined that the registrant's disclosure controls and procedures are effective based on our evaluation of these controls and procedures as of a date within 90 days prior to the filing date of this report. 11(b) - There were no changes in the registrant's internal control over financial reporting (as defined in Rule 30a-3(d) under the Act (17 CFR 270.30a-3(d)) that occurred during the last fiscal half-year of the period covered by this report that has materially affected, or is reasonably likely to materially affect, the registrant's internal control over financial reporting. Item 12 - Exhibits attached hereto 12(a)(1) - Code of Ethics - Not Applicable to this semi-annual report 12(a)(2) - Certifications - Attached hereto 12(a)(3) - Not Applicable 12(b) - Certifications - Attached hereto 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. Merrill Lynch Senior Floating Rate Fund, Inc. and Master Senior Floating Rate Trust By: _/s/ Robert C. Doll, Jr._______ Robert C. Doll, Jr., Chief Executive Officer of Merrill Lynch Senior Floating Rate Fund, Inc. and Master Senior Floating Rate Trust Date: April 22, 2005 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/ Robert C. Doll, Jr.________ Robert C. Doll, Jr., Chief Executive Officer of Merrill Lynch Senior Floating Rate Fund, Inc. and Master Senior Floating Rate Trust Date: April 22, 2005 By: _/s/ Donald C. Burke________ Donald C. Burke, Chief Financial Officer of Merrill Lynch Senior Floating Rate Fund, Inc. and Master Senior Floating Rate Trust Date: April 22, 2005