SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM N-CSR CERTIFIED SHAREHOLDER REPORT OF REGISTERED MANAGEMENT INVESTMENT COMPANIES Investment Company Act file number 811-5850 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: Terry K. Glenn, President, Merrill Lynch Senior Floating Rate Fund, Inc., 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: 08/31/03 Date of reporting period: 09/01/02 - 2/28/03 Item 1 - Attach shareholder report (BULL LOGO) Merrill Lynch Investment Managers Semi-Annual Report February 28, 2003 Merrill Lynch Senior Floating Rate Fund, Inc. www.mlim.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. The Fund has the ability to leverage its Common Stock to provide Common Stock shareholders with a potentially higher rate of return. Leverage creates risk for Common Stock shareholders, including the likelihood of greater volatility of net asset value and market price of Common Stock shares, and the risk that fluctuations in short-term interest rates may reduce the Common Stock's yield. Statements and other information herein are as dated and are subject to change. Merrill Lynch Senior Floating Rate Fund, Inc. Box 9011 Princeton, NJ 08543-9011 Printed on post-consumer recycled paper Merrill Lynch Senior Floating Rate Fund, Inc. DEAR SHAREHOLDER Merrill Lynch Senior Floating Rate Fund, Inc. consists largely of holdings in leveraged bank loans. These loans are generally senior secured floating rate investments. In response to general economic events and trends, the bank loan market tends to move in a similar direction, but with less volatility, as the high yield bond market. The linkage between the two markets can be ascribed to the fact that the issuers of debt as well as the buyers of that debt tend to participate in both markets (based on similar credit rating and risk/reward profiles of the markets). The lower price volatility of bank loan investments is caused by two factors. First, bank loans are usually senior secured obligations and, thus, they offer investors greater principal protection than unsecured bonds. Second, bank loans are floating rate instruments and, therefore, their principal value generally does not move inversely to interest rate movements, as is the case with fixed income bonds. Market Review The six-month period opened on the heels of a late August rebound in the loan market. For the better part of September though, market values remained bounded around a new, higher trading range reached during the last two weeks of August, unable to further reverse the effects of the technical price pressures applied by a quarter of disconcerting news out of Corporate America. One August trend that did continue to build during the month of September was the expansion of more lender-friendly underwriting terms and syndication processes. During the month of September, the primary market also saw a more normal syndication process, with more certainty of price and allocations given to the institutional lenders than what had been pervasive earlier in the year. The torrent of new transactions that some had expected to be released post-Labor Day did not materialize. Instead, some of that which had been on the immediate calendar slid into October. By October, all of the steam built up in August had fully dissipated and the bank loan market endured another difficult month. Prices in the secondary loan market were impacted both by credit concerns at the borrower level as well as weak technicals within the market itself. Conversely, the difficult times in the secondary loan market continued to have a salutary effect on the primary market. Importantly, the enticements for lenders to do new transactions were not limited to spread and pricing but also were evident in relative risk levels. During November, the secondary loan market began a rebound that would last throughout the remainder of the six-month period ended February 28, 2003. The pipeline of new transaction flow also continued its upward trend. In December, loans were off the highs of November and closer to an equilibrium level. New-issue volume and total inflows to the institutional market were about equal during December, which helped to bring down pricing for more creditworthy borrowers. In January, the bank loan market managed to retain the advances in market prices (off October 2002 lows) made in November and December. While the overall tone of the market was positive, the relative momentum did wane somewhat. The continuation of the market rally for a third consecutive month (in terms of a rising Credit Suisse First Boston (CSFB) Leveraged Loan Index) was heartening, considering the fact that the market was unable to accomplish this feat at any time during all of 2002. In February, the bank loan market extended its recovery to a fourth consecutive month. As in January, however, the relative momentum of the recovery slowed. During the month, the new-issue pipeline maintained a strong tone as many borrowers and underwriters continued to access a very liquid market. Merrill Lynch Senior Floating Rate Fund, Inc., February 28, 2003 Portfolio Performance For the six months ended February 28, 2003, the Common Stock of Merrill Lynch Senior Floating Rate Fund, Inc. had a net annualized yield of 5.65%, based on a period-end per share net asset value of $7.97 and $.221 per share income dividends. Over the same period, the total investment return on the Fund's Common Stock was +1.81%, based on a change in per share net asset value from $8.05 to $7.97, and assuming reinvestment of $.221 per share ordinary income dividends. These results compare to the +4.08% total return of the CSFB Leveraged Loan Index for the same period. It should be noted that the low point for the Fund's net asset value during the period was $7.78, occurring the last week of October. Since that time, the net asset value has seen a marked improvement, recovering $.19 by the February 28, 2003, on the strength of four consecutive months of positive gross total return. Although the three-month London Interbank Offered Rate fell from 1.806% at August 31, 2002 to 1.34% at February 28, 2003, the six- month average daily yield for the Fund increased to 5.07%, up from 4.52% for the prior six-month period (February 28, 2002 to August 31, 2002). Wireless telecommunications, our second-largest industry concentration, was the leading industry performer for price appreciation during the period, followed by the tower construction and leasing and paper sectors. Specifically, the lion's share of price performance was attributed to our position in Nextel Communications, Inc., where fourth quarter operating results and net subscriber additions were extremely strong. Sectors that had a negative impact on the Fund's market value included hotels and motels, utilities, and health services sectors. In particular, the greatest negative impact was our holdings in Wyndham International Inc. Prices in the lodging sector remain weak because of renewed softness in the economy, the military conflict with Iraq and attendant fears of terrorism, weaker-than-expected fourth quarter results and lowered 2003 guidance from most industry participants. In response to the likelihood of prolonged weakness in Wyndham, we decreased our exposure by approximately one-third in December 2002. Investment Activities From a sector perspective, we continue to put the most emphasis on those industries with strong asset values and stable cash-flow characteristics. Cable television remains the sector with the highest concentration, followed by wireless telecommunications and tower construction. After a disastrous start to the semi-annual period (the result of a marketwide sell-off after the Adelphia Communications bankruptcy the period before), cable television was a near break-even performer for the Fund. At February 28, 2003, the Fund held the debt of 137 different issuers in 40 different sectors. As compared to the CSFB Leveraged Loan Index at February 28, 2003, the Fund was underweight in Ba and above-rated names (32.7% of total assets compared to 51.6%), overweight in B-rated issues (39.2% compared to 30.9%), overweight in Caa or below-rated issues (11.8% compared to 8.1%) and overweight in securities not rated (16.3% compared to 9.4%). (Ratings are according to Moody's Investors Service.) During the six-month period ended February 28, 2003, our purchases had an average credit rating of slightly better than Ba3, while sales were focused on B-rated and Caa and below-rated companies. In Conclusion In our last report to shareholders, we stated that we saw a strengthening economy, a reversal of the Federal Reserve Board's interest rate easing policy and lower default rates as the keys to a total return rebound for the Fund. Six months later, we see that to date, only the last of those elements have come to fruition, yet the Fund has begun a recovery. With technical price pressure easing, the Fund's diverse set of assets with strong senior secured positions has led the way back up. It is our belief that the recent deceleration of the total return growth is attributable to investors' concern over the military conflict in Iraq. We anticipate that the leveraged loan market will resume a strengthening tone once the military action is concluded, assuming the conflict is relatively short and ends favorably for the United States and its allies. Merrill Lynch Senior Floating Rate Fund, Inc., February 28, 2003 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 Master Senior Floating Rate Trust (the Trust), which has the same investment objective as the Fund. All investments will be made at the Trust level. This structure is sometimes called a "master/feeder" structure. We thank you for your investment in Merrill Lynch Senior Floating Rate Fund, Inc., and we look forward to reviewing our outlook and strategy with you again in our next report to shareholders. Sincerely, (Terry K. Glenn ) Terry K. Glenn President and Director/Trustee (Kevin J. Booth) Kevin J. Booth Vice President and Portfolio Manager (Joseph Matteo) Joseph Matteo Vice President and Portfolio Manager April 4, 2003 Merrill Lynch Senior Floating Rate Fund, Inc., February 28, 2003 THE BENEFITS AND RISKS OF LEVERAGING Merrill Lynch Senior Floating Rate Fund, Inc. has the ability to utilize leverage through borrowings or issuance of short-term debt securities or shares of Preferred Stock. The concept of leveraging is based on the premise that the cost of assets to be obtained from leverage will be based on short-term interest rates, which normally will be lower than the return earned by the Fund on its longer-term portfolio investments. To the extent that the total assets of the Fund (including the assets obtained from leverage) are invested in higher-yielding portfolio investments, the Fund's Common Stock shareholders will be the beneficiaries of the incremental yield. Leverage creates risks for holders of Common Stock including the likelihood of greater net asset value and market price volatility. In addition, there is the risk that fluctuations in interest rates on borrowings (or in the dividend rates on any Preferred Stock, if the Fund were to issue the Preferred Stock) may reduce the Common Stock's yield and negatively impact its market price. If the income derived from securities purchased with assets received from leverage exceeds the cost of leverage, the Fund's net income will be greater than if leverage had not been used. Conversely, if the income from the securities purchased is not sufficient to cover the cost of leverage, the Fund's net income will be less than if leverage had not been used, and therefore the amount available for distribution to Common Stock shareholders will be reduced. In this case, the Fund may nevertheless decide to maintain its leveraged position in order to avoid capital losses on securities purchased with leverage. However, the Fund will not generally utilize leverage if it anticipates that its leveraged capital structure would result in a lower rate of return for its Common Stock than would be obtained if the Common Stock were unleveraged for any significant amount of time. Merrill Lynch Senior Floating Rate Fund, Inc., February 28, 2003 FINANCIAL INFORMATION Statement of Assets and Liabilities Merrill Lynch Senior Floating Rate Fund, Inc. As of February 28, 2003 Assets: Investment in Master Senior Floating Rate Trust, at value (identified cost--$1,044,833,488) $ 844,398,158 Prepaid registration fees 343,806 ---------------- Total assets 844,741,964 ---------------- Liabilities: Payables: Dividends to shareholders $ 562,891 Administrator 161,281 Investment adviser 153,077 877,249 ---------------- Accrued expenses 149,369 ---------------- Total liabilities 1,026,618 ---------------- Net Assets: Net assets $ 843,715,346 ================ Net Assets Common Stock, par value $.10 per share; 1,000,000,000 shares Consist of: authorized $ 10,592,385 Paid-in capital in excess of par 1,299,492,631 Distributions in excess of investment income--net $ (542,104) Accumulated realized capital losses on investments from the Trust--net (265,392,236) Unrealized depreciation on investments from the Trust--net (200,435,330) ---------------- Total accumulated losses--net (466,369,670) ---------------- Net Assets--Equivalent to $7.97 per share based on 105,923,854 shares of capital stock outstanding $ 843,715,346 ================ See Notes to Financial Statements. Merrill Lynch Senior Floating Rate Fund, Inc., February 28, 2003 FINANCIAL INFORMATION (continued) Statement of Operations Merrill Lynch Senior Floating Rate Fund, Inc. For the Six Months Ended February 28, 2003++ Investment Interest $ 27,907,517 Income: Facility and other fees 357,013 Net investment income allocated from the Trust: Interest 2,727,024 Facility and other fees 40,372 Expenses (487,843) ---------------- Total income and net investment income from the Trust 30,544,083 ---------------- Expenses: Investment advisory fees $ 3,916,392 Administration fees 1,151,627 Transfer agent fees 488,479 Tender offer fees 296,249 Professional fees 148,241 Loan interest expense 76,568 Accounting services 67,047 Printing and shareholder reports 30,648 Directors' fees and expenses 23,845 Registration fees 16,134 Custodian fees 9,824 Assignment fees 4,247 Pricing fees 1,114 Other 96,664 ---------------- Total expenses 6,327,079 ---------------- Investment income--net 24,217,004 ---------------- Realized & Realized gain (loss): Unrealized Investments--net (30,200,718) Gain (Loss) on The Trust--net 652,721 (29,547,997) Investments & ---------------- from The Change in unrealized appreciation/depreciation: Trust--Net: Investments--net 17,672,335 The Trust--net 1,305,074 18,977,409 ---------------- ---------------- Total realized and unrealized loss on investments and from the Trust--net (10,570,588) ---------------- Net Increase in Net Assets Resulting from Operations $ 13,646,416 ================ ++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 will be made at the Trust level. This structure is sometimes called a "master/feeder" structure. See Notes to Financial Statements. Merrill Lynch Senior Floating Rate Fund, Inc., February 28, 2003 FINANCIAL INFORMATION (continued) 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: 2003++ 2002 Operations: Investment income--net $ 24,217,004 $ 69,750,988 Realized loss on investments and from the Trust--net (29,547,997) (50,385,938) Change in unrealized appreciation/depreciation on investments and from the Trust--net 18,977,409 (78,494,316) ---------------- ---------------- Net increase (decrease) in net assets resulting from operations 13,646,416 (59,129,266) ---------------- ---------------- Dividends to Investment income--net (25,883,068) (69,418,864) Shareholders: ---------------- ---------------- Net decrease in net assets resulting from dividends to shareholders (25,883,068) (69,418,864) ---------------- ---------------- Capital Share Net decrease in net assets derived from capital share Transactions: transactions (208,031,369) (585,763,498) ---------------- ---------------- Net Assets: Total decrease in net assets (220,268,021) (714,311,628) Beginning of period 1,063,983,367 1,778,294,995 ---------------- ---------------- End of period* $ 843,715,346 $ 1,063,983,367 ================ ================ *Undistributed (distributions in excess of) investment income --net $ (542,104) $ 1,123,960 ================ ================ ++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 will be made at the Trust level. This structure is sometimes called a "master/feeder" structure. See Notes to Financial Statements. Merrill Lynch Senior Floating Rate Fund, Inc., February 28, 2003 FINANCIAL INFORMATION (concluded) Financial Highlights Merrill Lynch Senior Floating Rate Fund, Inc. The following per share data and ratios have been derived from information For the Six provided in the financial statements. Months Ended February 28, For the Year Ended August 31, Increase (Decrease) in Net Asset Value: 2003+++++ 2002 2001 2000 1999 Per Share Net asset value, beginning of period $ 8.05 $ 8.82 $ 9.45 $ 9.73 $ 9.97 Operating ---------- ---------- ---------- ---------- ---------- Performance: Investment income--net .20 .43 .79 .77 .65 Realized and unrealized loss on investments and from the Trust--net (.06) (.77) (.62) (.28) (.24) ---------- ---------- ---------- ---------- ---------- Total from investment operations .14 (.34) .17 .49 .41 ---------- ---------- ---------- ---------- ---------- Less dividends from investment income--net (.22) (.43) (.80) (.77) (.65) ---------- ---------- ---------- ---------- ---------- Net asset value, end of period $ 7.97 $ 8.05 $ 8.82 $ 9.45 $ 9.73 ========== ========== ========== ========== ========== Total Based on net asset value per share 1.81%+++ (4.09%) 1.52% 5.44% 4.23% Investment ========== ========== ========== ========== ========== Return:** Ratios to Expenses, excluding interest expense++ 1.46%* 1.41% 1.36% 1.31% 1.33% Average ========== ========== ========== ========== ========== Net Assets: Expenses++ 1.48%* 1.41% 1.36% 1.31% 1.33% ========== ========== ========== ========== ========== Investment income--net 5.26%* 5.07% 8.39% 8.17% 6.59% ========== ========== ========== ========== ========== Leverage: Average amount of borrowings outstanding during the period (in thousands) $8,138++++ $ 3,374 -- -- -- ========== ========== ========== ========== ========== Average amount of borrowings outstanding per share during the period (in thousands) $ .07++++ $ .02 -- -- -- ========== ========== ========== ========== ========== Supplemental Net assets, end of period (in thousands) $ 843,715 $1,063,983 $1,778,295 $2,492,591 $3,145,866 Data: ========== ========== ========== ========== ========== Portfolio turnover -- 89.46% 50.82% 59.59% 60.06% ========== ========== ========== ========== ========== *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. Therefore, no separate market exists. If applicable, the Fund's investment adviser waived a portion of its management fee. Without such waiver, the Fund's returns would have been lower. ++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 will be made at the Trust level. This structure is sometimes called a "master/feeder" structure. See Notes to Financial Statements. Merrill Lynch Senior Floating Rate Fund, Inc., February 28, 2003 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 a continuously offered, non-diversified, closed-end management investment company. 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 Master Senior Floating Rate Trust (the "Trust"), which has the same investment objective as the Fund. All investments will be made at the Trust level. This structure is sometimes called a "master/ feeder" structure. 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 accounting principles generally accepted in the United States of America, which may require the use of management accruals and estimates. These unaudited financial statements reflect all adjustments, which are, in the opinion of management, necessary to a fair statement of the results for the interim period presented. All such adjustments are of a normal, recurring nature. The percentage of the Trust owned by the Fund at February 28, 2003 was 84.3%. 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 1a 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. When the Fund was a stand-alone investment company, dividend income was recorded on the ex-dividend dates. Interest income was recognized on the accrual basis. Realized gains and losses on security transactions were determined on the identified cost basis. (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"), a 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. Merrill Lynch Senior Floating Rate Fund, Inc., February 28, 2003 NOTES TO FINANCIAL STATEMENTS (concluded) Merrill Lynch Senior Floating Rate Fund, Inc. Financial Data Services, Inc. ("FDS"), an indirect, wholly-owned subsidiary of ML & Co., is the Fund's transfer agent. For the six months ended February 28, 2003, FAM Distributors, Inc. ("FAMD"), a wholly-owned subsidiary of Merrill Lynch Group, Inc., earned early withdrawal charges of $412,062 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. Investments: Increases and decreases in the Fund's investment in the Trust for the six months ended February 28, 2003 were $843,878,997 and $3,718,188, respectively. 4. Capital Share Transactions: Transactions in capital shares were as follows: For the Six Months Ended Dollar February 28, 2003 Shares Amount Shares sold 577,916 $ 4,579,405 Shares issued to shareholders in reinvestment of dividends 1,465,567 11,593,027 -------------- -------------- Total issued 2,043,483 16,172,432 Shares redeemed (28,299,321) (224,203,801) -------------- -------------- Net decrease (26,255,838) $(208,031,369) ============== ============== For the Year Ended Dollar August 31, 2002 Shares Amount Shares sold 3,294,745 $ 27,972,326 Shares issued to shareholders in reinvestment of dividends 3,652,840 30,901,278 -------------- -------------- Total issued 6,947,585 58,873,604 Shares tendered (76,275,932) (644,637,102) -------------- -------------- Net decrease (69,328,347) $(585,763,498) ============== ============== 5. Short-Term Borrowings: Prior to February 10, 2003, the Fund, along with certain other funds managed by FAM and its affiliates, was a party to a $500,000,000 credit agreement with Bank One, N.A. and certain other lenders. The Fund was able to borrow under the credit agreement to fund shareholder redemptions and for other lawful purposes other than for leverage. The Fund was able to borrow up to the maximum amount allowable under the Fund's current prospectus and statement of additional information, subject to various other legal, regulatory or contractual limits. The Fund paid a commitment fee of .09% per annum based on the Fund'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 fund's election, the Federal Funds rate plus .50% or a basic rate as determined by Bank One, N.A. On November 29, 2002, the credit agreement was renewed for one year under the same terms, except that the commitment was reduced from $1,000,000,000 to $500,000,000. For the period September 1, 2002 to February 7, 2003, the average amount borrowed was approximately $8,138,000 and the average daily weighted interest rate was 2.15%. 6. Capital Loss Carryforward: On August 31, 2002, the Fund had a net capital loss carryforward of $193,524,864, of which $1,471,065 expires in 2004, $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 and $87,904,309 expires in 2010. This amount will be available to offset like amounts of any future taxable gains. Merrill Lynch Senior Floating Rate Fund, Inc., February 28, 2003 SCHEDULE OF INVESTMENTS Master Senior Floating Rate Trust S&P Moody's Face Senior Secured Industries++++ Rating Rating Amount Floating Rate Loan Interests* Value Air Transportation Evergreen International Aviation, Inc.: Services--0.3% B+ Ba2 $ 3,107,223 Term B Aircraft, due 5/07/2003 $ 2,656,676 B+ Ba2 526,057 Term B-1, due 5/07/2003 449,778 -------------- 3,106,454 Amusement & BB- Ba3 5,000,000 Metro-Goldwyn-Mayer Co., Term B, due 6/30/2008 4,975,780 Recreational Services--0.5% Apparel--1.0% Arena Brands, Inc.: NR++ NR++ 949,144 Revolving Credit, due 6/01/2003 941,824 NR++ NR++ 38,934 Term A, due 6/01/2003 38,666 NR++ NR++ 6,449,607 Term B, due 6/01/2003 6,411,716 BB B1 1,000,000 Levi Strauss, Term B, due 7/30/2006 1,002,708 Walls Industries: NR++ NR++ 1,035,130 Term B, due 2/28/2005 866,724 NR++ NR++ 1,512,935 Term C, due 2/28/2006 1,203,972 -------------- 10,465,610 Automotive B+ NR++ 7,057,976 Citation Corporation, Term B, due 12/01/2007 6,211,019 Equipment--2.5% BB Ba2 2,500,000 TRW Automotive, Term B, due 1/10/2011 2,504,375 Tenneco Automotive Inc.: B B2 8,714,909 Term B, due 12/30/2007 8,055,068 B B2 8,714,909 Term C, due 6/30/2008 8,070,624 -------------- 24,841,086 Broadcasting-- CC B2 19,318 Benedek Broadcasting Corporation, Term B, due 11/20/2007 19,278 Radio & Granite Broadcasting Corp.: Television--1.3% NR++ NR++ 5,250,000 Term A, due 4/15/2004 5,118,750 NR++ NR++ 1,500,000 Term B, due 4/15/2004 1,511,250 BB- Ba2 2,000,000 Sinclair Broadcasting Group Inc., Term B, due 12/31/2009 2,004,554 NR++ NR++ 4,465,124 VHR Broadcasting/Quoram Broadcasting, Term B, due 12/31/2004 4,119,077 -------------- 12,772,909 Building NR++ NR++ 2,854,960 Trussway Industries Inc., Term B, due 12/31/2006 2,212,594 Materials--0.2% Business BB- Ba3 6,314,629 Transaction Network Services, Term B, due 3/30/2007 6,225,821 Services--0.6% Cable Television BB Ba3 5,000,000 CC VI Operating Company LLC, Term B, due 11/12/2008 3,857,145 Services--19.1% BB+ Ba3 14,751,000 CC VIII Operating Company LLC, Term B, due 2/02/2008 12,451,423 D Caa 50,000,000 Century Cable Holdings LLC, Term, due 6/30/2009 36,041,650 BB- B1 73,386,684 Charter Communications Holdings, Term B, due 3/18/2008 61,772,861 BB- B1 7,446,237 Charter Communications Operating LLC, Incremental Term, due 9/18/2008 6,237,259 B Ba3 9,600,000 Falcon Holdings Group, Term C, due 12/31/2007 8,076,000 Merrill Lynch Senior Floating Rate Fund, Inc., February 28, 2003 SCHEDULE OF INVESTMENTS (continued) Master Senior Floating Rate Trust S&P Moody's Face Senior Secured Industries++++ Rating Rating Amount Floating Rate Loan Interests* Value Cable Television Frontiervision Operating Partners LP: Services D B2 $ 3,582,057 Term A, due 9/30/2005 $ 3,152,210 (concluded) D B2 15,668,000 Term B, due 3/31/2006 13,787,840 BB+ Ba3 5,500,000 Insight Midwest, Term B, due 12/31/2009 5,312,313 D B2 23,500,000 Olympus Cable Holdings LLC, Term B, due 9/30/2010 19,061,696 B+ B1 16,170,000 Pegasus Media & Communications Inc., Term, due 4/30/2005 14,615,869 NR++ Caa1 9,975,000 UCC/HHC Inc., Term B, due 3/31/2008 6,778,013 -------------- 191,144,279 Chemicals--5.1% NR++ NR++ 3,693,548 CII Carbon LLC, Term, due 6/25/2008 2,585,483 NR++ NR++ 8,200,854 Cedar Chemical Corp., Term B, due 10/31/2003 574,060 Huntsman International LLC: B+ B2 19,967,066 Term B, due 6/30/2007 19,650,929 B+ B2 19,967,067 Term C, due 6/30/2008 19,650,927 BB Ba3 4,201,779 Lyondell Petrochemical Co., Term E, due 6/30/2006 4,214,254 NR++ NR++ 4,499,095 Pinnacle Polymers, Term B, due 12/31/2004 4,467,395 -------------- 51,143,048 Computer-Related Bridge Information Systems (b): Products--0.5% NR++ NR++ 1,401,457 Multi Draw Term, due 7/07/2003 189,197 NR++ NR++ 9,068,991 Term B, due 5/29/2005 1,224,314 NR++ NR++ 1,394,014 Tranche B, due 5/29/2005 188,192 NR++ NR++ 3,574,219 Stratus Technologies, Inc., Term B, due 2/26/2005 2,912,988 -------------- 4,514,691 Consumer BB- Ba3 10,513,664 Burhmann NV, Term B, due 10/26/2007 9,984,038 Products--1.6% Simmons Co.: BB- Ba3 2,792,977 Term B, due 10/29/2005 2,801,995 BB- Ba3 3,447,720 Term C, due 10/29/2006 3,461,080 -------------- 16,247,113 Electronics/ B+ B1 3,484,426 ChipPAC International Co. Ltd., Term B, due 7/31/2006 3,462,648 Electrical NR++ Ba3 3,488,934 DD Inc., Term B, due 4/22/2005 2,529,477 Components--2.2% On Semiconductor Corporation: B B3 6,282,731 Term B, due 8/04/2006 5,692,154 B B3 7,022,858 Term C, due 8/04/2007 6,362,709 B B3 3,996,685 Term D, due 8/04/2007 3,636,984 NR++ B1 1,546,398 Trend Technologies, Inc., Term, due 2/28/2007 (b) 425,260 -------------- 22,109,232 Energy--1.1% BB- Ba3 1,046,012 Dresser Inc., Term B, due 4/10/2009 1,048,720 BB Ba3 897,196 EPN Holdings Co., Term, due 3/31/2005 854,579 BB+ Ba3 1,000,000 El Paso Energy, Term, due 9/01/2009 952,500 BBB- NR++ 5,458,750 Pride International, Term, due 6/14/2007 5,484,341 NR++ NR++ 2,701,875 W-H Energy Services, Term B, due 4/16/2007 2,661,347 -------------- 11,001,487 Environmental IT Group Inc. (b): Services--0.9% D NR++ 9,991,000 Term, due 6/08/2007 965,800 D NR++ 5,084,407 Term B, due 6/11/2006 491,494 BB- B1 7,481,250 URS Corp., Term B, due 7/01/2008 7,069,781 -------------- 8,527,075 Financial NR++ B2 4,732,063 Outsourcing Solutions, Inc., Term B, due 6/01/2006 (b) 1,679,882 Services--0.2% Merrill Lynch Senior Floating Rate Fund, Inc., February 28, 2003 SCHEDULE OF INVESTMENTS (continued) Master Senior Floating Rate Trust S&P Moody's Face Senior Secured Industries++++ Rating Rating Amount Floating Rate Loan Interests* Value Food & Kindred BB- B2 $ 987,721 American Seafood, Term B, due 3/31/2009 $ 991,734 Products--1.4% NR++ Ba2 6,208,778 Dean Foods Company, Term B, due 7/15/2008 6,215,378 BB- Ba3 4,000,000 DelMonte, Term B, due 12/20/2010 4,034,000 BB+ Ba2 1,320,206 International Multi-Foods Corporation, Term B, due 2/28/2008 1,326,218 BB- Ba3 1,571,120 Merisant Company, Term B, due 3/31/2007 1,572,594 -------------- 14,139,924 Funeral Homes & NR++ Caa1 13,351,906 Prime Succession Inc., Term, due 8/01/2003 6,008,358 Parlors--0.6% Gaming--1.5% B+ Ba3 6,444,369 Ameristar Casinos Inc., Term B, due 12/20/2006 6,479,007 B+ B2 5,400,000 Marina District Finance Co., Term B, due 7/15/2007 5,325,750 B+ B2 2,985,000 Venetiancasi, Term B, due 6/04/2008 3,005,522 -------------- 14,810,279 Grocery--1.1% The Pantry Inc.: B+ B1 6,484,327 Term B, due 1/31/2006 6,399,220 B+ B1 5,092,500 Term C, due 7/31/2006 5,027,255 -------------- 11,426,475 Health Services-- Medical Specialties (b): 1.5% NR++ NR++ 12,845,455 Axel, due 6/30/2004 3,211,364 NR++ NR++ 4,418,182 Term, due 10/21/2001 1,104,545 NR++ NR++ 5,723,889 Mediq/Prn Life Support, Tranche B, due 6/13/2003 5,294,597 B+ B1 6,219,769 MedPointe Inc., Term B, due 9/30/2008 5,675,540 -------------- 15,286,046 Hotels & Motels-- Wyndham Hotel Corporation: 2.6% B- NR++ 16,734,314 Increasing Rate Term, due 6/30/2004 12,691,940 B- NR++ 18,851,973 Term, due 6/30/2006 13,698,315 -------------- 26,390,255 Industrial B+ B2 9,216,016 Muzak LLC, Term B, due 12/31/2006 8,778,255 Services--0.9% Insurance--0.2% BB+ Ba2 2,038,750 Willis North America Inc., Term B, due 11/19/2006 2,026,008 Leasing & Rental CCC+ C 8,522,920 Anthony Crane Rental LP, Term, due 7/20/2006 4,971,700 Services--1.2% CCC+ NR++ 7,186,541 Rent Way Inc., Term B, due 12/31/2003 6,683,483 -------------- 11,655,183 Manufacturing-- B B1 3,792,746 Alliance, Term B, due 8/06/2007 3,762,719 3.0% Channel Master Holdings, Inc.: NR++ NR++ 586,541 Revolving Credit, due 11/15/2004 528,684 NR++ NR++ 4,692,326 Term, due 11/15/2004 4,296,824 B+ B1 2,678,359 Metokote Corp., Term B, due 11/02/2005 2,641,531 B+ B1 13,183,750 Mueller Group, Term E, due 6/24/2008 13,167,270 SPX Corporation: BB+ Ba2 854,687 Term B, due 9/30/2009 853,405 BB+ Ba2 1,424,479 Term C, due 3/31/2010 1,422,342 B B2 1,740,862 Transpor Manufacturing, Term B, due 6/15/2005 1,346,266 BB- B1 2,493,990 Trimas Corp., Term B, due 12/31/2009 2,502,283 -------------- 30,521,324 Merrill Lynch Senior Floating Rate Fund, Inc., February 28, 2003 SCHEDULE OF INVESTMENTS (continued) Master Senior Floating Rate Trust S&P Moody's Face Senior Secured Industries++++ Rating Rating Amount Floating Rate Loan Interests* Value Metals & NR++ NR++ $10,286,816 Acme Metals, Inc., Term, due 12/01/2005 (b) $ 1,543,022 Mining--5.1% NR++ NR++ 14,648,333 Copperweld Corp., Term A, due 5/23/2003 10,693,283 Ispat International: B- Caa2 18,622,500 Term B, due 7/15/2005 12,104,625 B- Caa4 18,622,500 Term C, due 7/15/2006 12,104,625 CCC+ Ca 31,000,000 Ormet Corportation, Term, due 8/15/2008 14,880,000 -------------- 51,325,555 Packaging--2.1% B+ B1 4,975,000 Berry Plastics Corp., Term B, due 6/30/2010 5,002,984 NR++ NR++ 15,805,162 Dr. Pepper, Term B, due 10/07/2007 15,600,185 -------------- 20,603,169 Paper--0.8% Stone Container Corp.: B+ Ba3 6,138,462 Term B, due 6/30/2009 6,072,762 B+ Ba3 2,261,538 Term C, due 6/30/2009 2,236,804 -------------- 8,309,566 Petroleum BB+ Ba3 9,323,306 Tesoro Petroleum Corp., Term B, due 12/31/2007 8,866,464 Refineries--0.9% Printing & NR++ NR++ 9,747,315 Enterprise Newsmedia, Inc./Publishing Co., Term B, due Publishing--2.3% 6/30/2005 9,016,266 B B1 5,019,231 Liberty Group Operating, Term B, due 3/31/2007 5,012,957 BB Ba3 2,500,000 RH Donnelley, Term B, due 11/15/2009 2,517,813 B+ B1 6,520,642 Vertis, Inc., Term B, due 12/06/2008 6,333,175 -------------- 22,880,211 Property B+ B1 7,940,000 Corrections Corporation of America, Term B, due 3/31/2008 7,941,985 Management--0.8% Restaurants & BB- Ba3 6,467,500 Domino's Inc. & Bluefence Inc., Term B, due 6/30/2008 6,487,711 Food Service--0.6% Retail & Retail BBB+ Ba1 5,514,706 Shoppers Drug Mart, Term F, due 2/04/2009 5,527,803 Specialty--0.6% Tower BB- B2 25,019,796 American Tower Systems Corporation, Term B, due 12/31/2007 23,707,558 Construction & B- B3 20,796,000 Crown Castle Operating Company, Term B, due 3/31/2008 19,721,533 Leasing--6.5% CC B3 24,765,940 Spectracite Communications, Term B, due 12/31/2007 21,979,771 -------------- 65,408,862 Transportation BB+ Ba1 6,462,088 Kansas City Southern Railway Company, Term B, due 6/12/2008 6,478,243 Services--1.5% B+ B1 9,099,649 North American Van Lines Inc., Term B, due 11/18/2007 8,875,006 -------------- 15,353,249 Utilities--4.7% NR++ Ba3 3,000,000 AES New York Funding, LLC, Term, due 2/28/2005 2,825,001 BBB- Ba3 10,546,084 Calpine Corporation, Term B, due 3/05/2004 9,635,166 BBB- Baa3 9,500,000 Consumer Energy, due 7/31/2004 9,541,563 BB+ Baa2 1,990,000 Michigan Electric Transmission, Term B, due 5/01/2007 1,990,623 Mission Energy Holdings: B- Ba2 19,233,767 Term A, due 7/02/2006 5,866,299 B- Ba2 12,266,233 Term B, due 7/02/2006 3,741,201 BB Ba2 8,500,000 Southern California Edison Company, Term B, due 2/28/2005 8,519,924 BB+ Ba2 2,228,125 TNP Enterprises, Inc., Term, due 3/30/2006 2,214,199 BBB- Ba1 2,495,726 Western Resources Inc., Term N, due 5/31/2005 2,470,769 -------------- 46,804,745 Merrill Lynch Senior Floating Rate Fund, Inc., February 28, 2003 SCHEDULE OF INVESTMENTS (continued) Master Senior Floating Rate Trust S&P Moody's Face Senior Secured Industries++++ Rating Rating Amount Floating Rate Loan Interests* Value Waste Allied Waste North America Inc.: Management--3.4% BB Ba3 $ 5,137,493 Term A, due 7/21/2005 $ 5,121,438 BB Ba3 13,231,333 Term B, due 7/21/2006 13,207,702 BB Ba3 15,877,599 Term C, due 7/21/2007 15,849,242 -------------- 34,178,382 Wired NR++ NR++ 6,751,147 E. Spire Communication, Term C, due 8/11/2006 (b) 1 Telecommuni- Integra (Pacoin): cations--0.9% NR++ NR++ 2,821,844 Term A, due 12/31/2005 844,296 NR++ NR++ 883,250 Term B, due 12/31/2005 264,268 NR++ NR++ 1,545,688 Term C, due 12/31/2005 462,470 BB- Ba3 8,259,440 Valor Telecommunications, Term B, due 6/30/2008 7,288,956 NR++ Caa3 16,500,000 WCI Capital Corp., Term B, due 9/30/2007 (b) 283,602 -------------- 9,143,593 Wireless American Cellular Corp.: Telecommuni- CC B3 3,571,449 Term B, due 3/31/2008 2,691,980 cations--11.5% CC B3 13,397,240 Term C, due 3/31/2009 10,098,169 Centennial Cellular Operating Co.: B+ B1 1,946,615 Term A (PR), due 11/30/2006 1,596,224 B+ B1 2,365,885 Term A (US), due 11/30/2006 1,940,026 B+ B1 4,308,750 Term C, due 11/30/2007 3,377,754 Dobson Sygnet Operating Co.: NR++ B3 1,525,919 Term B, due 3/23/2007 1,358,068 NR++ B3 1,646,602 Term C, due 12/23/2007 1,465,475 Nextel Communications, Inc.: BB- Ba3 18,952,500 Term B, due 6/30/2008 18,114,022 BB- Ba3 18,952,500 Term C, due 12/31/2008 18,114,022 BB- Ba3 30,310,250 Term D, due 3/31/2009 28,319,776 Rural Cellular Corp.: B+ Ba3 4,518,240 Term B, due 10/03/2008 3,911,504 B+ Ba3 4,518,240 Term C, due 4/03/2009 3,911,504 Sygnet Wireless, Inc.: B Ba3 1,925,890 Term A, due 9/23/2006 1,771,819 B Ba3 10,683,907 Term B, due 3/23/2007 9,508,677 B Ba3 9,862,976 Term C, due 12/23/2007 8,778,049 -------------- 114,957,069 Total Senior Secured Floating Rate Loan Interests (Cost--$1,146,174,120)--92.8% 929,797,532 Corporate Debt Apparel--0.1% NR++ NR++ 1,094,606 Warnaco Inc., 9.50% due 2/15/2008 1,072,714 Chemicals--0.2% NR++ NR++ 1,662,678 PCI Chemicals, Canada, 10% due 12/31/2008 1,263,635 NR++ NR++ 554,226 Pioneer Companies, Inc., 4.90% due 12/31/2006 410,127 -------------- 1,673,762 Total Corporate Debt (Cost--$8,405,491)--0.3% 2,746,476 Merrill Lynch Senior Floating Rate Fund, Inc., February 28, 2003 SCHEDULE OF INVESTMENTS (concluded) Master Senior Floating Rate Trust Shares Industries++++ Held Common Stocks Value Apparel--0.3% 237,083 Warnaco Group, Inc. (b) $ 2,387,422 Chemicals--0.0% 107,520 Pioneer Companies, Inc. (b) 311,808 Other Telecommunications--0.0% 1,060 Pacific Coin (b) 0 Wired Telecommunications--0.0% 1,654,878 Integra (b) 17 Total Investments in Common Stocks (Cost--$3,212,781)--0.3% 2,699,247 Preferred Stocks Medical Equipment--0.0% 14,398 Mediq Inc. (Convertible) 0 Total Investments in Preferred Stocks (Cost--$0)--0.0% 0 Warrants (a) Cable Television Services--0.0% 707 Classic Cable, Inc. 0 Drilling--0.0% 12,250 Rigco North America 0 Paper--0.0% Cellu Tissue: 98 Series A 1 49 Series B 0 -------------- 1 Total Investments in Warrants (Cost--$1)--0.0% 1 Beneficial Interest Short-Term Securities $60,136,220 Merrill Lynch Liquidity Series, LLC Cash Sweep Series I** 60,136,220 Total Short-Term Securities (Cost--$60,136,220)--6.0% 60,136,220 Total Investments (Cost--$1,217,928,613)--99.4% 995,379,476 Other Assets Less Liabilities--0.6% 6,248,549 -------------- Net Assets--100.0% $1,001,628,025 ============== (a)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. (b)Non-income producing security. ++Not Rated. ++++Industries are shown as a percent of net assets. *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 Inter- Bank Offered Rate), (ii) the prime rate offered by one or more major U.S. banks or (iii) the certificate of deposit rate. **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) are as follows: Net Interest Affiliate Activity Income Merrill Lynch Liquidity Series, LLC Cash Sweep Series I $60,136,220 $67,318 See Notes to Financial Statements. Merrill Lynch Senior Floating Rate Fund, Inc., February 28, 2003 FINANCIAL INFORMATION Statement of Assets and Liabilities Master Senior Floating Rate Trust As of February 28, 2003 Assets: Investments, at value (identified cost--$1,217,928,613) $ 995,379,476 Cash 174,785 Receivables: Interest $ 6,904,922 Principal paydowns 102,865 Contributions 101,062 Commitment fees 28,727 7,137,576 ---------------- Prepaid expenses and other assets 34,182 ---------------- Total assets 1,002,726,019 ---------------- Liabilities: Payables: Investment adviser 575,375 Securities purchased 45,680 621,055 ---------------- Accrued expenses and other liabilities 476,939 ---------------- Total liabilities 1,097,994 ---------------- Net Assets: Net assets $ 1,001,628,025 ================ Net Assets Investors' capital $ 1,224,392,093 Consist of: Unrealized depreciation on investments--net (222,764,068) ---------------- Net assets $ 1,001,628,025 ================ See Notes to Financial Statements. Statement of Operations Master Senior Floating Rate Trust For the Six Months Ended February 28, 2003 Investment Interest $ 7,956,688 Income: Facility and other fees 92,585 ---------------- Total income 8,049,273 ---------------- Expenses: Investment advisory fees $ 1,242,587 Accounting services 82,248 Professional fees 48,210 Loan interest expense 39,616 Trustees' fees and expenses 20,413 Custodian fees 19,696 Printing and shareholder reports 3,326 Assignment fees 2,785 Pricing fees 1,624 Other 56,554 ---------------- Total expenses 1,517,059 ---------------- Investment income--net 6,532,214 ---------------- Realized & Realized loss on investments--net (7,236,367) Unrealized Change in unrealized depreciation on investments--net 8,586,706 Gain (Loss) on ---------------- Investments-- Total realized and unrealized gain on investments--net 1,350,339 Net: ---------------- Net Increase in Net Assets Resulting from Operations $ 7,882,553 ================ See Notes to Financial Statements. Merrill Lynch Senior Floating Rate Fund, Inc., February 28, 2003 FINANCIAL INFORMATION (continued) 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: 2003 2002 Operations: Investment income--net $ 6,532,214 $ 14,687,288 Realized loss on investments--net (7,236,367) (15,359,304) Change in unrealized depreciation on investments--net 8,586,706 (14,069,682) ---------------- ---------------- Net increase (decrease) in net assets resulting from operations 7,882,553 (14,741,698) ---------------- ---------------- Capital Proceeds from contributions 35,006,422 22,661,968 Transactions: Fair value of net asset contributions 841,562,097 -- Fair value of withdrawals (65,028,346) (202,646,242) ---------------- ---------------- Net increase (decrease) in net assets derived from capital transactions 811,540,173 (179,984,274) ---------------- ---------------- Net Assets: Total increase (decrease) in net assets 819,422,726 (194,725,972) Beginning of period 182,205,299 376,931,271 ---------------- ---------------- End of period $ 1,001,628,025 $ 182,205,299 ================ ================ See Notes to Financial Statements. Statement of Cash Flows Master Senior Floating Rate Trust For the Six Months Ended February 28, 2003 Cash Provided Net increase in net assets resulting from operations $ 7,882,553 by Operating Adjustments to reconcile net increase in net assets resulting from operations Activities: to net cash provided by operating activities: Increase in receivables (5,538,936) Increase in other assets 23,165 Decrease in other liabilities 736,513 Realized and unrealized gain on investments--net (1,350,339) Amortization of premium and discount (912,448) ---------------- Net cash provided by operating activities 840,508 ---------------- Cash Used for Proceeds from principal payments and sales of loan interests 86,838,718 Investing Purchases of loan interests (831,977,927) Activities: Purchases of short-term investments--net (54,288,105) ---------------- Net cash used for investing activities (799,427,314) ---------------- Cash Provided Cash receipts of borrowings 19,000,000 by Financing Cash payments on borrowings (32,000,000) Activities: Cash receipts on capital contributions 35,110,786 Fair value of net asset contributions 841,562,097 Cash payments on capital withdrawals (65,028,346) ---------------- Net cash provided by financing activities 798,644,537 ---------------- Cash: Net increase in cash 57,731 Cash at beginning of period 117,054 ---------------- Cash at end of period $ 174,785 ================ Cash Flow Cash paid for interest $ 49,728 Information: ================ See Notes to Financial Statements. Merrill Lynch Senior Floating Rate Fund, Inc., February 28, 2003 FINANCIAL INFORMATION (concluded) Financial Highlights Master Senior Floating Rate Trust For the Six For the For the Months Year Period Ended Ended Oct. 6, 2000++ The following ratios have been derived from Feb. 28, Aug. 31, to Aug. 31, information provided in the financial statements. 2003 2002 2001 Total Investment 3.16%+++ (4.66%) -- Return:** ========== ========== ========== Ratios to Expenses, excluding interest expense 1.13%* 1.09% 1.06%* Average ========== ========== ========== Net Assets: Expenses 1.16%* 1.12% 1.06%* ========== ========== ========== Investment income--net 4.99%* 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) $ 4,265 $ 3,959 -- ========== ========== ========== Supplemental Net assets, end of period (in thousands) $1,001,628 $ 182,205 $ 376,931 Data: ========== ========== ========== Portfolio turnover 5.52% 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, 2003 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 and is organized as a Delaware business trust. The Declaration of Trust permits the Trustees to issue nontransferable interests in the Trust, subject to certain limitations. On February 10, 2003, the Trust received all of the assets of Merrill Lynch Senior Floating Rate Fund, Inc., a registered investment company that converted to a master/feeder structure. The Trust's financial statements are prepared in conformity with accounting principles generally accepted in the United States of America, which may require the use of management accruals and estimates. These unaudited financial statements reflect all adjustments, which are, in the opinion of management, necessary to a fair statement of the results for the interim period presented. 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 invests in senior secured floating rate loan interests ("Loan Interests") with collateral having a market value, at 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. Depending on how the loan was acquired, the Trust will regard the issuer as including the corporate borrower along with an agent bank for the syndicate of lenders and any intermediary of the Trust's investment. Because agents and intermediaries are primarily commercial banks, the Trust's investment in corporate loans at February 28, 2003 could be considered to be concentrated in commercial banking. (b) Valuation of investments--Loan Interests are valued in accordance with guidelines established by the Board of Directors. 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 matrices to determine valuations. If the pricing service does not provide a value for a Loan Interest, the Investment Adviser will value the Loan Interest at fair value, which is intended to approximate market value. Other portfolio securities may be valued on the basis of prices furnished by one or more pricing services which determine prices for normal, institutional-size trading units of such securities using market information, transactions for comparable securities and various relationships between securities that are generally recognized by institutional traders. In certain circumstances, portfolio securities are valued at the last sale price on the exchange that is the primary market for such securities, or the last quoted bid price for those securities for which the over-the-counter market is the primary market or for listed securities in which there were no sales during the day. Short-term securities with remaining maturities of sixty days or less are valued at amortized cost, which approximates market value. 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. Occasionally, events affecting the values of securities and other assets may occur between the times at which valuations of such securities are determined (that is, close of the market on which such security trades) and the close of business on the NYSE. If events (for example, company announcement, natural disasters, market volatility) occur during such periods that are expected to materially affect the value for such securities, those securities may be valued at their fair market value as determined in good faith by the Trust's Board of Trustees or by the investment adviser using a pricing service and/or prodedures approved by the Board of Trustees of the Trust. (c) Derivative financial instruments--The Trust may engage in various portfolio investment strategies to increase or decrease the level of risk to which the Trust is exposed more quickly and efficiently than transactions in other types of instruments. Losses may arise due to changes in the value of the contract or if the counterparty does not perform under the contract. Merrill Lynch Senior Floating Rate Fund, Inc., February 28, 2003 * Interest rate swaps--The Trust is authorized to enter into swap agreements for the purpose of hedging the market risk on existing securities. In a swap agreement, the Trust exchanges with the counterparty their respective commitments to pay or receive interest on a specified notional principal amount. If the counterparty defaults on its obligation, the Trust's ability to receive interest will be delayed or limited. Furthermore, if the Trust does not have sufficient income to pay its obligation under the swap agreement, the Trust would be in default and the counterparty would be able to terminate the swap agreement. When the swap agreement is closed, the Trust records a realized gain or loss equal to the difference between the value of the swap agreement at the time it was entered into and the value at the time it was closed. (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. Accordingly, as a "pass through" entity, the Trust pays no income dividends or capital gains distributions. 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. 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. For the six months ended February 28, 2003, the Trust reimbursed FAM $5,734 for certain accounting services. Certain officers and/or trustees of the Trust are officers and/or directors of FAM, PSI, FDS, and/or ML & Co. 3. Investments: Purchases and sales of investments, excluding short-term securities, for the six months ended February 28, 2003 were $15,131,798 and $86,941,583, respectively. Net realized losses for the six months ended February 28, 2003 and net unrealized losses as of February 28, 2003 were as follows: Realized Unrealized Losses Losses Loan interests $ (7,236,283) $(222,549,137) Short-term investments (84) -- Unfunded loan interests -- (214,931) -------------- -------------- Total $ (7,236,367) $(222,764,068) ============== ============== As of February 28, 2003, net unrealized depreciation for Federal income tax purposes aggregated $222,723,643, of which $4,963,537 related to appreciated securities and $227,687,180 related to depreciated securities. At February 28, 2003, the aggregate cost of investments for Federal income tax purposes was $1,218,103,119. Merrill Lynch Senior Floating Rate Fund, Inc., February 28, 2003 NOTES TO FINANCIAL STATEMENTS (concluded) Master Senior Floating Rate Trust 4. Unfunded Loan Interests: As of February 28, 2003, the Fund had unfunded loan commitments of approximately $5,867,000, which would be extended at the option of the borrower, pursuant to the following loan agreements: Unfunded Commitment Borrower (in thousands) Arena Brands, Inc. $1,481 Channel Master Holdings, Inc. $ 636 Granite Broadcasting Corporation $3,750 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 Bank One, N.A. and certain other lenders. The Trust may borrow under the credit agreement to fund investor withdrawals 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 ..09% 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 fund's election, the Federal Funds rate plus .50% or a base rate as determined by Bank One, N.A. On November 29, 2002, the credit agreement was renewed for one year under the same terms, except that the total commitment was reduced from $1,000,000,000 to $500,000,000. For the six months ended February 28, 2003, the average amount borrowed was approximately $4,265,000 and the daily weighted average interest rate was 1.87%. PORTFOLIO PROFILE As Of February 28, 2003 Percent of Ten Largest Holdings Total Assets Nextel Communications, Inc.++ 6.4% Charter Communications Holdings++ 6.2 Huntsman International LLC++ 3.9 Century Cable Holdings LLC 3.6 Allied Waste North America Inc.++ 3.4 Wyndham Hotel Corporation++ 2.6 Ispat International++ 2.4 American Tower Systems Corporation 2.4 Spectracite Communications 2.2 Sygnet Wireless, Inc.++ 2.0 ++Includes combined holdings. Percent of Five Largest Industries Total Assets Cable Television Services 19.1% Wireless Telecommunications 12.2 Tower Construction & Leasing 6.5 Chemicals 5.3 Metals & Mining 5.1 Percent of Quality Ratings by Long-Term S&P/Moody's Investments BBB/Baa 2.5% BB/Ba 11.6 B/B 50.9 CCC/Caa 10.7 CC/Ca 3.7 D 7.9 NR (Not Rated) 12.7 Merrill Lynch Senior Floating Rate Fund, Inc., February 28, 2003 OFFICERS AND DIRECTORS/TRUSTEES Terry K. Glenn, President and Director/Trustee Ronald W. Forbes, Director/Trustee Cynthia A. Montgomery, Director/Trustee Charles C. Reilly, Director/Trustee Kevin A. Ryan, Director/Trustee Roscoe S. Suddarth, Director/Trustee Richard R. West, Director/Trustee Edward D. Zinbarg, Director/Trustee Kevin J. Booth, Vice President Joseph P. Matteo, Vice President Donald C. Burke, Vice President and Treasurer Bradley J. Lucido, 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 Item 2 - Did registrant adopt a code of ethics, as of the end of the period covered by this report, that applies to the registrant's principal executive officer, principal financial officer, principal accounting officer or controller, or persons performing similar functions, regardless of whether these individuals are employed by the registrant or a third party? If not, why not? Briefly describe any amendments or waivers that occurred during the period. State here if code of ethics/amendments/waivers are on website and give website address-. State here if fund will send code of ethics to shareholders without charge upon request--N/A (not answered until July 15, 2003 and only annually for funds) Item 3 - Did the registrant's board of directors determine that the registrant either: (i) has at least one audit committee financial expert serving on its audit committee; or (ii) does not have an audit committee financial expert serving on its audit committee? If yes, disclose name of financial expert and whether he/she is "independent," (fund may, but is not required, to disclose name/ independence of more than one financial expert) If no, explain why not. -N/A (not answered until July 15, 2003 and only annually for funds) Item 4 - Disclose annually only (not answered until December 15, 2003) (a) Audit Fees - Disclose aggregate fees billed for each of the last two fiscal years for professional services rendered by the principal accountant for the audit of the registrant's annual financial statements or services that are normally provided by the accountant in connection with statutory and regulatory filings or engagements for those fiscal years. N/A. (b) Audit-Related Fees - Disclose aggregate fees billed in each of the last two fiscal years for assurance and related services by the principal accountant that are reasonably related to the performance of the audit of the registrant's financial statements and are not reported under paragraph (a) of this Item. Registrants shall describe the nature of the services comprising the fees disclosed under this category. N/A. (c) Tax Fees - Disclose aggregate fees billed in each of the last two fiscal years for professional services rendered by the principal accountant for tax compliance, tax advice, and tax planning. Registrants shall describe the nature of the services comprising the fees disclosed under this category. N/A. (d) All Other Fees - Disclose aggregate fees billed in each of the last two fiscal years for products and services provided by the principal accountant, other than the services reported in paragraphs (a) through (c) of this Item. Registrants shall describe the nature of the services comprising the fees disclosed under this category. N/A. (e)(1) Disclose the audit committee's pre-approval policies and procedures described in paragraph (c)(7) of Rule 2-01 of Regulation S-X. N/A. (e)(2) Disclose the percentage of services described in each of paragraphs (b) through (d) of this Item that were approved by the audit committee pursuant to paragraph (c)(7)(i)(C) of Rule 2-01 of Regulation S-X. N/A. (f) If greater than 50%, disclose the percentage of hours expended on the principal accountant's engagement to audit the registrant's financial statements for the most recent fiscal year that were attributed to work performed by persons other than the principal accountant's full-time, permanent employees. N/A. (g) Disclose the aggregate non-audit fees billed by the registrant's accountant for services rendered to the registrant, and rendered to the registrant's investment adviser (not including any sub-adviser whose role is primarily portfolio management and is subcontracted with or overseen by another 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 last two fiscal years of the registrant. N/A. (h) Disclose whether the registrant's audit committee has considered whether the provision of non-audit services that were rendered to the registrant's investment adviser (not including any subadviser whose role is primarily portfolio management and is subcontracted with or overseen by another investment adviser), and any entity controlling, controlled by, or under common control with the investment adviser that provides ongoing services to the registrant that were not pre-approved pursuant to paragraph (c)(7)(ii) of Rule 2-01 of Regulation S-X is compatible with maintaining the principal accountant's independence. N/A. Items 5-6 - Reserved Item 7 - For closed-end funds that contain voting securities in their portfolio, describe the policies and procedures that it uses to determine how to vote proxies relating to those portfolio securities. N/A (not answered until July 1, 2003) Item 8--Reserved Item 9(a) - Disclose the conclusions of the registrant's principal executive officer or officers and principal financial officer or officers, or persons performing similar functions, about the effectiveness of the registrant's disclosure controls and procedures (as defined in Rule 30a-2(c) under the Act (17 CFR 270.30a-2(c))) based on their evaluation of these controls and procedures as of a date within 90 days of the filing date of the report that includes the disclosure required by this paragraph. N/A (not answered until July 15, 2003 and only annually for funds) Item 9(b)--There were 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 10(a) - Attach code of ethics or amendments/waivers, unless code of ethics or amendments/waivers is on website or offered to shareholders upon request without charge. N/A. 10(b) - Attach certifications (4 in total pursuant to Sections 302 and 906 for CEO/CFO). 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. By: /s/ Terry K. Glenn Terry K. Glenn, President of Merrill Lynch Senior Floating Rate Fund, Inc. Date: April 21, 2003 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/ Terry K. Glenn Terry K. Glenn, President of Merrill Lynch Senior Floating Rate Fund, Inc. Date: April 21, 2003 By: /s/ Donald C. Burke Donald C. Burke, Chief Financial Officer of Merrill Lynch Senior Floating Rate Fund, Inc. Date: April 21, 2003