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 811-09229 811-10171 Name of Fund: Merrill Lynch Senior Floating Rate Fund II, 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 II, 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: 08/31/06 Date of reporting period: 09/01/05 - 02/28/06 Item 1 - Report to Stockholders Semi-Annual Report February 28, 2006 Merrill Lynch Senior Floating Rate Fund II, Inc. (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 II, 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 II, 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 the 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 1-800-637-3863; (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 II, 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 II, Inc. Announcement to Shareholders On February 15, 2006, BlackRock, Inc. ("BlackRock") and Merrill Lynch & Co., Inc. ("Merrill Lynch") entered into an agreement to contribute Merrill Lynch's investment management business, Merrill Lynch Investment Managers, L.P. and certain affiliates (including Fund Asset Management, L.P. and Merrill Lynch Investment Managers International Limited), to BlackRock to create a new independent company that will be one of the world's largest asset management firms with nearly $1 trillion in assets under management (based on combined assets under management as of December 31, 2005). The transaction is expected to close in the third quarter of 2006, at which time the new company will operate under the BlackRock name. If approved by the Fund's/Trust's Board of Directors/Trustees and Fund/Trust shareholders, the combined company that results from the transaction is expected to become the investment adviser of the Fund/Trust. 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 II, INC. FEBRUARY 28, 2006 A Letter From the President Dear Shareholder Financial markets began 2006 with a return to volatility following a fairly uninspiring 2005. For the six- and 12-month periods ended February 28, 2006, most major market indexes landed in positive territory: Total Returns as of February 28, 2006 6-month 12-month U.S. equities (Standard & Poor's 500 Index) + 5.93% + 8.40% Small cap U.S. equities (Russell 2000 Index) +10.24 +16.59 International equities (MSCI Europe, Australasia, Far East Index) +15.14 +17.41 Fixed income (Lehman Brothers Aggregate Bond Index) - 0.11 + 2.74 Tax-exempt fixed income (Lehman Brothers Municipal Bond Index) + 0.99 + 3.87 High yield bonds (Credit Suisse High Yield Index) + 1.89 + 3.27 The Federal Reserve Board (the Fed) increased interest rates 200 basis points (2.00%) over the past 12 months, bringing the target federal funds rate to 4.5%. Notably, Ben Bernanke replaced Alan Greenspan as Fed chairman in January, a month after the central bank removed the critical word "measured" from the description of its rate-hiking program. Still, most observers expect at least one more interest rate hike before the Fed pauses in its tightening campaign. U.S. economic growth, which came in at 4.1% in the third quarter of 2005, fell to 1.6% in the fourth quarter. Growth is expected to reaccelerate in the first quarter of 2006, although the economy is likely to feel some pressure in the quarters ahead as the consumer sector seems to be softening. Capital spending by businesses, however, appears relatively strong. Overall corporate health, including strong company balance sheets, helped prompt robust dividend- distribution, share-buyback and merger-and-acquisition activity in 2005, a trend that has continued in 2006. This, as well as reasonably good company earnings and low core inflation, has been supportive of U.S. stocks despite the headwinds of rising interest rates and high energy prices. Many international equity markets have fared even better, thanks in part to higher economic growth rates and low inflation. In the U.S. bond market, short-term interest rates continued to move higher as longer-term interest rates advanced more moderately. After flattening dramatically in 2005, the Treasury curve recently has been toying with bouts of inversion, whereby short-term yields have surpassed long-term yields. At period-end, the six-month Treasury bill offered the highest yield on the curve at 4.74%. Amid the uncertainty inherent in the financial markets, we encourage you to review your goals periodically with your financial advisor and to make portfolio changes, as needed. For timely "food for thought" for investors, we also invite you to visit Shareholder magazine at www.mlim.ml.com/shareholdermagazine. As always, we thank you for trusting Merrill Lynch Investment Managers with your investment assets, and we look forward to continuing to serve your investment needs. Sincerely, (Robert C. Doll, Jr.) Robert C. Doll, Jr. President and Director/Trustee MERRILL LYNCH SENIOR FLOATING RATE FUND II, INC. FEBRUARY 28, 2006 A Discussion With Your Fund's Portfolio Manager We continued to follow our credit-driven investment process in seeking out opportunities in the leveraged loan market that could offer attractive yields and total return potential for the portfolio. Describe the recent market environment. The bank loan market recorded another strong year in 2005, benefiting from increasing demand for the securities from issuers of collateralized loan obligations (CLOs), which kept prices at or above par value. The market also benefited from the rising London InterBank Offered Rate (LIBOR), which increased 95 basis points (.95%) to 4.82% during the six-month reporting period, and decreasing spreads. Investors earned total returns consisting mainly of interest payments, as there were only marginal price changes. Fund flows for 2005 totaled $151.6 billion. There were $141.8 billion in new issues through November and a preliminary amount of $8.4 billion issued in December. The numbers add up to $1.4 billion in excess cash before factoring in repayments and loans taken by proprietary accounts, both of which would increase the excess cash in the market. For the six months ended February 28, 2006, the bank loan market, as measured by the Credit Suisse Leveraged Loan Index, returned +3.02%. For the first two months of 2006, the Index returned +1.36%. CLO issuance continued to drive supply and demand in the market. Approximately $50.9 billion in new institutional leveraged loans was issued during the first two months of the year. A slowdown in issuance in February led to continued tightening in the institutional loan market, although repayment activity offset the lull in loan issuance for the month. Each week in February saw repayment levels in excess of the 12-month average, with a spike for the last full week of the month that was greater than three times the average. We believe this may mark the beginning of the next refinancing trend. It appears that yield spreads on leveraged loans may fall again. With strong CLO issuance for the first two months of 2006 and relatively constrained loan supply, prices most likely will rise and, more importantly, refinancing activity may increase. Changes to leverage loan ratings currently under consideration by Moody's Investors Service, a credit rating and research firm, may allow greater leverage on new structures that could exacerbate the spread tightening. The current relatively benign credit environment also could contribute to lower spreads. As we previously noted, we believe this trend of tightening loan spreads will continue until the current credit cycle reverses. Standard & Poor's Leveraged Commentary & Data reported a default rate of 2.09% based on the number of loans at the end of February, a 26-month high. Despite the increase, the rate is still below the historical average of 3.56%. Although defaults are expected to continue to increase, we do not expect default rates to rise significantly above 3% for 2006. High yield bonds, in which the Fund may invest up to 20% of its assets, returned +1.89% for the six-month period, as measured by the Credit Suisse High Yield Index. Much of the gain occurred in the first two months of 2006, as the high yield market benefited from increasing strength in the U.S. economy. How did the Fund perform during the period in light of the existing market conditions? For the six-month period ended February 28, 2006, the Common Stock of Merrill Lynch Senior Floating Rate Fund II, Inc. had a net annualized yield of 5.41%, based on a period-end per share net asset value of $9.79 and $.262 per share income dividends. For the same period, the total investment return on the Fund's Common Stock was +2.62%, based on an unchanged per share net asset value of $9.79, and assuming reinvestment of all distributions. For the same period, the Fund's benchmark, the Credit Suisse Leveraged Loan Index, returned +3.02%. Security selection in the chemicals, utilities and U.S. cable sectors detracted from Fund results. Conversely, our positions in the health care, telecommunication services and services sectors contributed positively to performance for the period. Fund performance in the chemicals sector was hindered mainly by our holdings in the common stock and floating rate notes of GEO Specialty Chemicals, Inc., manufacturer of a diverse range of products that are sold through five business segments: electronics, paints and coatings, construction, water treatment and rubber additives. High energy and raw materials prices hurt GEO's profit margins as its costs rose faster than the prices of its products. This trend has abated in the near term, and we believe 2006 will be a key turnaround year for the company. MERRILL LYNCH SENIOR FLOATING RATE FUND II, INC. FEBRUARY 28, 2006 In the utility sector, our positions in first- and second-lien loans of Calpine Corporation, an independent power producer, detracted from performance. We sold the issues after an adverse court ruling left the company's liquidity seriously impaired, leading to a bankruptcy filing in December 2005. The second-lien loan declined more significantly in price following the bankruptcy filing than the first lien. Finally, in the U.S. cable sector, our positions in Century Communications Corp. and Olympus Communications L.P. loans had a negative effect on Fund results. Both companies are part of the Adelphia Communications Corp. family and the values of the securities declined on speculation that their exits from bankruptcy might be delayed. On the positive side, the price of our holding in healthcare name Medical Specialties Group, Inc. rose significantly. When we liquidated our position following the rally, we realized a gain over our then-current carrying value (a company's total assets minus intangible assets and liabilities, such as debt). The strong performance in telecommunication services resulted primarily from our positions in Qwest Communications International Inc. and Winstar LLC. Qwest reported very good fourth quarter results, and our security's performance improved as a result of the cost restructuring steps initiated by the company's management. Winstar was a previously defaulted security that benefited from a favorable court decision for the company in its lawsuit against Lucent Technologies, Inc. Winstar had accused Lucent of breaching a strategic partnership contract. We subsequently sold our position in the security, as we believe the risk of an appeal by Lucent overshadows the possibility of further price gains. Fund performance in the services sector benefited from our position in the common stock of The Shaw Group, Inc. The Fund received shares in this engineering/consulting firm as part of the restructuring of IT Group, which The Shaw Group purchased in 2002. The company has experienced better-than-expected earnings, which boosted the stock's share price from $21.10 to $29.05, at which point we liquidated our position. What changes were made to the portfolio during the period? We did not make significant changes to the Fund's sector allocations during the period, nor did we employ leveraging strategies in the portfolio. During the period, Master Senior Floating Rate Trust (the Trust), the master portfolio into which the Fund is a feeder, purchased assets of approximately $211.3 million in par amount (face value) and experienced $222.2 million in repayments from issuers. In addition, we sold roughly $33.8 million in assets during the period while attempting to minimize sales, given our desire to maintain a relatively small cash position. How would you characterize the portfolio's position at the close of the period? At the end of the period, the Trust was composed of 163 issuers spread among 29 industries. The Fund was underweight versus its benchmark in securities rated Ba or better and credits rated Caa or below, and there were overweight positions in B-rated and unrated securities. The portfolio's overall credit quality effectively is positioned more to the center of the leveraged loan market. We anticipate that many of the same factors that influenced the leveraged loan market in the past year will remain intact. We believe the trend of less frequent new-loan issuance, lower interest rate spreads and above-par secondary market prices will continue, especially given the benign credit environment that we expect over the next year. A further benefit to the market should be an increase in the three-month LIBOR. Consequently, we intend to continue to purchase assets predominantly in the primary market, while selectively participating in the secondary market. Joseph P. Matteo Vice President and Portfolio Manager March 14, 2006 Effective March 31, 2006, Kevin J. Booth is primarily responsible for the day-to-day management of the Fund's portfolio. Mr. Booth has been a Director (Global Fixed Income) of Merrill Lynch Investment Managers, L.P. (MLIM) since 2000 and was a Vice President of MLIM from 1994 to 2000. MERRILL LYNCH SENIOR FLOATING RATE FUND II, INC. FEBRUARY 28, 2006 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 12b-1 fees, and other Fund expenses. The following example (which is based on a hypothetical investment of $1,000 invested on September 1, 2005 and held through February 28, 2006) 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, 2005 September 1, February 28, to February 28, 2005 2006 2006 Actual Merrill Lynch Senior Floating Rate Fund II, Inc. $1,000 $1,026.20 $7.79 Hypothetical (5% annual return before expenses)** Merrill Lynch Senior Floating Rate Fund II, Inc. $1,000 $1,017.11 $7.75 * Expenses are equal to the annualized expense ratio of 1.55%, 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 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 II, INC. FEBRUARY 28, 2006 Statement of Assets and Liabilities Merrill Lynch Senior Floating Rate Fund II, Inc. As of February 28, 2006 Assets Investment in Master Senior Floating Rate Trust (the "Trust"), at value (identified cost--$343,317,702) $ 342,026,081 Prepaid expenses 109,740 --------------- Total assets 342,135,821 --------------- Liabilities Payables: Dividends to shareholders $ 363,580 Administrator 85,609 Other affiliates 45,211 494,400 --------------- Accrued expenses 3,696 --------------- Total liabilities 498,096 --------------- Net Assets Net assets $ 341,637,725 =============== Net Assets Consist of Common Stock, par value $.10 per share; 1,000,000,000 shares authorized $ 3,490,958 Paid-in capital in excess of par 367,103,317 Undistributed investment income--net $ 109,348 Accumulated realized capital losses allocated from the Trust--net (27,774,277) Unrealized depreciation allocated from the Trust--net (1,291,621) --------------- Total accumulated losses--net (28,956,550) --------------- Net Assets--Equivalent to $9.79 per share based on 34,909,580 shares of capital stock outstanding $ 341,637,725 =============== See Notes to Financial Statements. MERRILL LYNCH SENIOR FLOATING RATE FUND II, INC. FEBRUARY 28, 2006 Statement of Operations Merrill Lynch Senior Floating Rate Fund II, Inc. For the Six Months Ended February 28, 2006 Investment Income Net investment income allocated from the Trust: Interest $ 11,337,384 Facility and other fees 95,303 Dividends 13,945 Expenses (1,720,347) --------------- Total income 9,726,285 --------------- Expenses Administration fees $ 676,281 Transfer agent fees 92,518 Tender offer fees 60,412 Printing and shareholder reports 24,899 Registration fees 17,193 Professional fees 15,518 Other 6,975 --------------- Total expenses 893,796 --------------- Investment income--net 8,832,489 --------------- Realized & Unrealized Gain (Loss) Allocated from the Trust--Net Realized loss on investments--net (425,531) Change in unrealized depreciation on investments and unfunded corporate loans--net 158,239 --------------- Total realized and unrealized loss--net (267,292) --------------- Net Increase in Net Assets Resulting from Operations $ 8,565,197 =============== See Notes to Financial Statements. Statements of Changes in Net Assets Merrill Lynch Senior Floating Rate Fund II, Inc. For the Six For the Months Ended Year Ended February 28, August 31, Increase (Decrease) in Net Assets: 2006 2005 Operations Investment income--net $ 8,832,489 $ 13,299,583 Realized gain (loss)--net (425,531) 2,730,085 Change in unrealized depreciation--net 158,239 766,310 --------------- --------------- Net increase in net assets resulting from operations 8,565,197 16,795,978 --------------- --------------- Dividends to Shareholders Investment income--net (8,832,483) (12,942,150) --------------- --------------- Net decrease in net assets resulting from dividends to shareholders (8,832,483) (12,942,150) --------------- --------------- Capital Share Transactions Net increase (decrease) in net assets derived from capital share transactions (13,202,899) 55,871,750 --------------- --------------- Net Assets Total increase (decrease) in net assets (13,470,185) 59,725,578 Beginning of period 355,107,910 295,382,332 --------------- --------------- End of period* $ 341,637,725 $ 355,107,910 =============== =============== * Undistributed investment income--net $ 109,348 $ 109,342 =============== =============== See Notes to Financial Statements. MERRILL LYNCH SENIOR FLOATING RATE FUND II, INC. FEBRUARY 28, 2006 Financial Highlights Merrill Lynch Senior Floating Rate Fund II, Inc. For the Six Months Ended The following per share data and ratios have been derived February 28, For the Year Ended August 31, from information provided in the financial statements. 2006 2005 2004 2003 2002 Per Share Operating Performance Net asset value, beginning of period $ 9.79 $ 9.67 $ 9.13 $ 8.64 $ 9.55 ---------- ---------- ---------- ---------- ---------- Investment income--net .25*** .39*** .30*** .37 .43 Realized and unrealized gain (loss)--net --++++ .11 .55 .49 (.91) ---------- ---------- ---------- ---------- ---------- Total from investment operations .25 .50 .85 .86 (.48) ---------- ---------- ---------- ---------- ---------- Less dividends from investment income--net (.25) (.38) (.31) (.37) (.43) ---------- ---------- ---------- ---------- ---------- Net asset value, end of period $ 9.79 $ 9.79 $ 9.67 $ 9.13 $ 8.64 ========== ========== ========== ========== ========== Total Investment Return** Based on net asset value per share 2.62%+++ 5.26% 9.41% 10.28% (5.32%) ========== ========== ========== ========== ========== Ratios to Average Net Assets++ Expenses 1.55%* 1.54% 1.57% 1.84% 1.78% ========== ========== ========== ========== ========== Investment income--net 5.22%* 4.03% 3.20% 4.28% 4.64% ========== ========== ========== ========== ========== Supplemental Data Net assets, end of period (in thousands) $ 341,638 $ 355,108 $ 295,382 $ 143,155 $ 182,026 ========== ========== ========== ========== ========== Portfolio turnover of the Trust 22.90% 52.92% 76.45% 56.56% 36.77% ========== ========== ========== ========== ========== * 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, and/or investment income--net. ++++ Amount is less than $(.01) per share. +++ Aggregate total investment return. See Notes to Financial Statements. MERRILL LYNCH SENIOR FLOATING RATE FUND II, INC. FEBRUARY 28, 2006 Notes to Financial Statements Merrill Lynch Senior Floating Rate Fund II, Inc. 1. Significant Accounting Policies: Merrill Lynch Senior Floating Rate Fund II, 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, 2006 was 34.9%. 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 1(b) 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 .40% 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, 2006, FAM Distributors, Inc. ("FAMD"), a wholly-owned subsidiary of Merrill Lynch Group, Inc., earned early withdrawal charges of $7,594 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. In February 2006, ML & Co. and BlackRock, Inc. entered into an agreement to merge ML & Co.'s investment management business, including FAM, with the investment management business of BlackRock, Inc. This transaction is expected to close in the third quarter of 2006. 3. Capital Share Transactions: Transactions in capital shares were as follows: For the Six Months Ended Dollar February 28, 2006 Shares Amount Shares sold 2,240,420 $ 21,885,839 Shares issued to shareholders in reinvestment of dividends 516,299 5,041,061 --------------- --------------- Total issued 2,756,719 26,926,900 Shares redeemed (4,105,255) (40,129,799) --------------- --------------- Net decrease (1,348,536) $ (13,202,899) =============== =============== MERRILL LYNCH SENIOR FLOATING RATE FUND II, INC. FEBRUARY 28, 2006 Notes to Financial Statements (concluded) Merrill Lynch Senior Floating Rate Fund II, Inc. For the Year Ended Dollar August 31, 2005 Shares Amount Shares sold 9,755,947 $ 95,204,349 Shares issued to shareholders in reinvestment of dividends 774,091 7,553,236 --------------- --------------- Total issued 10,530,038 102,757,585 Shares redeemed (4,808,075) (46,885,835) --------------- --------------- Net increase 5,721,963 $ 55,871,750 =============== =============== 4. Capital Loss Carryforward: On August 31, 2005, the Fund had a net capital loss carryforward of $27,348,746, of which $2,381,939 expires in 2009, $864,375 expires in 2010, $17,719,049 expires in 2011 and $6,383,383 expires in 2012. This amount will be available to offset like amounts of any future taxable gains. MERRILL LYNCH SENIOR FLOATING RATE FUND II, INC. FEBRUARY 28, 2006 Portfolio Information Master Senior Floating Rate Trust As of February 28, 2006 Percent of Ten Largest Holdings Net Assets Adelphia Communications Corp. 5.0% Charter Communications Operating LLC 4.3 Olympus Cable Holdings LLC 2.4 Metro-Goldwyn-Mayer Studios, Inc. 2.1 Wellman, Inc.* 2.0 Frontiervision Operating Partners LP* 2.0 Huntsman ICI Holdings 1.8 PanAmSat Corp. 1.7 LifePoint Hospitals, Inc. 1.4 Allied Waste North America, Inc.* 1.3 * Includes combined holdings and/or affiliates, where applicable. Percent of Five Largest Industries Net Assets Cable--U.S. 19.6% Chemicals 9.2 Health Care 4.9 Utility 4.9 Diversified Media 4.4 For Trust compliance purposes, the Trust's industry classifications refer to 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. The 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 0.5% BB/Ba 30.4 B/B 43.2 CCC/Caa 6.6 NR (Not Rated) 5.9 Other* 13.4 * Includes portfolio holdings in common stocks, warrants, other interests and short-term investments. MERRILL LYNCH SENIOR FLOATING RATE FUND II, INC. FEBRUARY 28, 2006 Schedule of Investments Master Senior Floating Rate Trust Face Senior Secured Amount Floating Rate Loan Interests* Value Aerospace & Defense--1.8% K&F Industries, Inc. Term Loan: $ 3,587,416 6.86% due 11/18/2012 $ 3,635,624 1,868,446 6.87% due 11/18/2013 1,893,554 4,250,509 Standard Aero Holdings Term Loan, 6.83% - 6.96% due 8/24/2012 4,225,273 Vought Aircraft Industries, Inc.: 6,240,706 Term Loan, 7.11% due 12/22/2011 6,319,688 1,200,000 Tranche B Line of Credit Deposit, 6.89% due 12/22/2010 1,213,350 --------------- 17,287,489 Airlines--0.5% 1,250,000 Delta Air Lines, Inc. Term Loan B,11.01% due 3/27/2008 1,299,687 3,281,250 United Air Lines Term Loan B, 8.625% due 2/01/2012 3,341,953 --------------- 4,641,640 Automotive--1.7% 4,672,366 Metaldyne Corp. Term Loan D, 9.044% due 12/31/2009 4,762,893 670,000 Metaldyne Term Loan D, 11.25% due 12/31/2009 679,003 TRW Automotive, Inc.: 4,207,500 Tranche B Term Loan, 6.25% due 6/30/2012 4,219,479 3,465,000 Tranche E Term Loan, 6% due 11/02/2010 3,484,924 Tenneco Automotive, Inc.: 2,721,197 Term Loan B, 5.943% - 7.02% due 12/12/2010 2,763,716 1,186,440 Tranche B-1 Credit Linked Deposit, 6.82% due 12/12/2010 1,204,978 --------------- 17,114,993 Broadcasting--3.4% 3,951,180 Emmis Operating Co. Term Loan B, 6.32% due 11/10/2011 3,981,122 4,987,500 Entravision Communications Term Loan B, 6.03% due 3/29/2013 5,026,467 NextMedia Group, Inc.: 1,534,615 Delay Draw Term Loan, 6.57% due 11/15/2012 1,548,043 3,452,885 First Lien Term Loan, 6.57% due 11/15/2012 3,483,097 3,250,000 Second Lien Term Loan, 9.07% due 11/15/2013 3,312,293 11,750,000 Paxson Communications Corp. First Lien Term Loan, 7.777% due 11/15/2012 11,786,719 3,970,000 Susquehanna Media Term Loan C, 6.07% due 3/30/2012 3,977,444 --------------- 33,115,185 Cable--U.S.--19.5% 50,000,000 Adelphia Communications Corp. Term Loan B, 9.50% due 6/30/2009 49,145,850 41,318,631 Charter Communications Operating LLC Tranche B Term Loan, 7.86% - 7.92% due 4/07/2011 41,841,187 6,333,333 DIRECTV Holdings, Inc. Tranche B Term Loan, 6.039% - 6.07% due 4/13/2013 6,413,488 Frontiervision Operating Partners LP: 3,582,057 Term Loan A, 8.90% due 3/31/2006 3,592,803 15,668,000 Term Loan B, 8.775% due 3/31/2006 15,738,992 Face Senior Secured Amount Floating Rate Loan Interests* Value Cable--U.S. (concluded) $ 9,975,000 Hilton Head Communications UCA Term Loan B, 8.75% due 3/31/2008 $ 9,720,428 11,294,810 Insight Midwest Holdings LLC Term Loan C, 6.563% due 12/31/2009 11,465,520 1,123,078 Intelsat Ltd. Term Loan, 6.313% due 7/28/2011 1,136,064 5,500,000 Mediacom Broadband Group Tranche A Term Loan, 5.79% - 6.29% due 3/31/2010 5,501,964 3,168,000 Mediacom Communications LLC Tranche B Term Loan, 6.18% - 7% due 3/31/2013 3,215,520 23,500,000 Olympus Cable Holdings LLC Term Loan B, 9.50% due 9/30/2010 23,149,592 16,787,500 PanAmSat Corp. Tranche B Term Loan, 6.438% due 8/20/2011 17,013,090 1,970,000 Persona Cable Term Loan B, 7.527% due 3/31/2011 1,994,625 669,712 Persona Communications Term Loan C, 9.50% due 7/30/2011 678,083 --------------- 190,607,206 Chemicals--8.6% 9,651,500 C2 Carbon/Cll Term Loan B, 6.563% due 8/23/2012 9,766,112 7,182,700 Cedar Chemical Corp. Term Loan B, 8.90% due 10/31/2003 (d)(g) 395,048 4,018,511 Celanese Holdings LLC Term Loan B, 6.527% due 4/06/2011 4,070,751 10,000,000 Cognis Deutschland Second Lien Term Loan B, 9.308% due 11/15/2013 10,251,040 17,245,785 Huntsman ICI Holdings Term Loan B, 6.32% due 8/16/2012 17,367,040 2,483,951 Invista Canada Term Loan, 6.375% due 4/29/2011 2,502,581 5,578,448 Invista SARL, 6.375% due 4/29/2011 5,649,339 1,477,500 Lyondell-Citgo Refining Term Loan, 6.527% due 5/21/2007 1,492,275 1,985,000 Mosaic Co. Tranche B Term Loan, 5.563% - 6.25% due 2/21/2012 2,006,587 5,160,610 Nalco Co. Tranche B Term Loan, 6.25% - 6.48% due 11/04/2010 5,219,023 2,000,000 Polymer Group, Inc. Term Loan B, 6.769% due 11/22/2012 2,025,312 3,960,000 Rockwood Specialties Group, Inc. Tranche D Term Loan, 6.466% due 12/10/2012 4,015,689 Wellman, Inc.: 9,000,000 First Lien Term Loan, 8.68% due 2/10/2009 9,157,500 10,000,000 Second Lien Term Loan,11% due 2/10/2010 10,262,500 --------------- 84,180,797 Consumer--Non-Durables--1.0% 2,376,442 American Achievement Corp. Term Loan B, 6.92% due 3/22/2011 2,418,030 2,268,000 Camelbak Products LLC First Lien Term Loan, 8.17% due 8/04/2011 2,197,125 4,692,529 Josten's, Inc. Term Loan B, 6.777% due 10/04/2011 4,744,902 --------------- 9,360,057 Diversified Media--4.4% 5,460,202 Dex Media West, Inc. Term Loan B, 6.11% - 6.56% due 3/09/2010 5,516,513 3,920,375 Liberty Group Operating Term Loan B, 6.625% - 6.875% due 2/28/2012 3,958,846 MERRILL LYNCH SENIOR FLOATING RATE FUND II, INC. FEBRUARY 28, 2006 Schedule of Investments (continued) Master Senior Floating Rate Trust Face Senior Secured Amount Floating Rate Loan Interests* Value Diversified Media (concluded) $ 4,000,000 MGM Holdings II, Inc. Tranche B Term Loan, 6.78% due 4/08/2012 $ 4,051,592 3,000,000 Merrill Corp. Term Loan, 6.855% - 7.105% due 5/15/2011 3,034,218 20,000,000 Metro-Goldwyn-Mayer Studios, Inc. Term Loan B, 6.78% due 4/30/2011 20,257,960 2,162,349 RH Donnelley Tranche D Term Loan, 6.20% - 6.31% due 8/30/2011 2,182,206 3,121,514 Six Flags Theme Parks, Inc. Term Loan B, 7.05% - 7.21% due 6/30/2009 3,162,727 942,857 Yankee Holdings LP Term Loan, 7.03% due 5/01/2007 947,571 --------------- 43,111,633 Energy--Exploration & Production--0.4% 1,492,500 Carrizo Oil & Gas, Inc. Second Lien Term Loan, 10.527% due 7/21/2010 1,535,409 1,950,200 Williams Production RMT Co. Term Loan, 6.82% due 5/31/2007 1,973,969 --------------- 3,509,378 Energy--Other--1.0% 818,815 Dresser, Inc. Term Loan C, 7.11% due 4/10/2009 833,144 3,000,000 Key Energy Services, Inc. Term Loan B, 7.52% - 7.78% due 6/30/2012 3,046,875 2,500,000 Markwest Energy Operating Co. LLC Term Loan B, 6.82% due 12/29/2010 2,531,250 3,000,000 Scorpion Drilling Ltd. Second Lien Term Loan, 12.07% due 5/05/2015 3,097,500 --------------- 9,508,769 Financial--0.7% 7,000,000 LPL Financial Services, Inc. Term Loan B, 7.769% - 8.13% due 8/28/2013 7,039,375 Food & Drug--0.2% 2,300,000 The Pantry, Inc. Term Loan B, 6.39% due 1/02/2012 2,327,313 Food & Tobacco--2.1% 2,967,500 Commonwealth Brands Term Loan, 7% due 12/22/2012 3,006,448 1,488,750 Del Monte Term Loan B, 6.14% due 2/08/2012 1,510,709 4,376,531 Doane Pet Care Co. Tranche B Term Loan, 6.621% - 6.94% due 10/24/2012 4,442,179 2,777,322 Domino's, Inc. Term Loan, 6.063% due 6/25/2010 2,807,989 5,246,687 Dr. Pepper/Seven Up Bottling Group, Inc. Term Loan B, 6.57% due 12/19/2010 5,325,387 3,304,951 Merisant Co. Term Loan B, 7.918% due 1/11/2010 3,065,342 --------------- 20,158,054 Gaming--4.4% 4,770,000 Ameristar Casinos Term Loan B, 6.191% due 9/09/2012 4,820,681 3,940,000 Boyd Gaming Corp. Term Loan, 5.70% - 6.027% due 6/30/2011 3,987,607 1,459,573 Global Cash Access LLC Term Loan B, 6.855% due 3/10/2010 1,479,642 2,992,484 MotorCity Casino Term Loan B, 6.85% due 7/21/2012 3,020,539 6,483,750 Penn National Gaming, Inc. Term Loan B, 5.89% due 9/01/2007 6,578,983 Face Senior Secured Amount Floating Rate Loan Interests* Value Gaming (concluded) $ 5,000,000 Pinnacle Entertainment Term Loan, 6.57% due 11/25/2010 $ 5,088,125 2,487,500 Trump Entertainment Resorts Holdings LP Term Loan B-1, 7.17% due 5/01/2012 2,518,594 Venetian Casino Resort LLC: 3,982,906 Delay Draw Term Loan, 6.28% due 6/15/2011 4,026,156 11,517,094 Term Loan B, 6.28% due 6/15/2011 11,642,158 --------------- 43,162,485 Health Care--4.9% 1,975,000 Community Health Systems, Inc. Term Loan, 6.36% - 6.56% due 8/19/2011 2,002,156 7,401,059 DaVita Inc. Tranche B Term Loan, 6.35% - 7.05% due 10/05/2012 7,518,240 1,824,620 Duloxetine Royalty Term Loan, 9.10% due 10/18/2013 1,833,743 HealthSouth Corp.: 3,526,031 Term Loan, 7.11% due 3/08/2010 3,542,561 956,250 Tranche B Term Loan, 6.89% due 3/08/2010 960,733 1,311,915 Kinetic Concepts, Inc. Term Loan B, 6.28% due 8/11/2010 1,327,767 13,669,368 LifePoint Hospitals, Inc. Term Loan B, 6.185% due 4/15/2012 13,767,145 Matria Healthcare, Inc.: 641,026 Bridge Loan, 7.02% due 1/19/2007 643,029 1,358,974 Term Loan B, 6.82% - 7.02% due 1/19/2012 1,374,263 Medical Specialties Group (d)(g): 4,352,856 Term Loan, 8.125% due 9/03/2003 65,293 12,655,527 Term Loan Axel, 8% due 6/30/2004 189,833 3,697,015 Medpointe Healthcare Inc. Tranche B Term Loan, 9.86% due 9/30/2008 3,697,015 804,545 Orthofix International NV Term Loan B, 6.60% due 12/15/2008 809,071 423,512 Rotech Healthcare, Inc. Term Loan B, 7.53% due 3/31/2008 426,689 9,910,163 Vanguard Health Systems Term Loan B, 6.95% due 9/23/2011 10,047,973 --------------- 48,205,511 Housing--3.2% 10,000,000 Capital Automotive Term Loan B, 6.34% due 12/16/2010 10,059,380 2,891,339 Goodman Global Holdings Term Loan, 6.375% due 12/23/2011 2,915,736 4,380,317 Headwaters, Inc. Term Loan B-1, 6.86% due 4/30/2011 4,416,818 4,275,526 LIONS Gables Realty Term Loan B, 6.32% due 9/30/2006 4,303,014 4,789,584 Lake at Las Vegas Joint Venture First Lien Term Loan, 7.318% - 7.46% due 11/01/2009 4,803,268 4,925,000 Nortek, Inc. Term Loan, 6.94% - 8.75% due 8/27/2011 4,971,172 --------------- 31,469,388 Information Technology--2.1% 7,480,000 Fidelity National Information Solutions, Inc. Term Loan B, 6.32% due 3/09/2013 7,541,650 3,980,000 SunGard Data Systems, Inc. Term Loan B, 7.215% due 2/11/2013 4,041,654 8,925,970 Telcordia Technologies, Inc. Term Loan, 7.22% - 7.31% due 9/15/2012 8,842,289 --------------- 20,425,593 MERRILL LYNCH SENIOR FLOATING RATE FUND II, INC. FEBRUARY 28, 2006 Schedule of Investments (continued) Master Senior Floating Rate Trust Face Senior Secured Amount Floating Rate Loan Interests* Value Leisure--0.3% $ 3,297,129 True Temper Sports, Inc. Term Loan B, 6.53% - 7.53% due 3/15/2011 $ 3,317,736 Manufacturing--3.1% Amsted Industries, Inc. Term Loan B-1: 441,905 6.885% - 7.028% due 10/15/2010 448,718 3,454,490 6.885% - 7.13% due 10/15/2010 3,507,748 1,492,503 Brand Services, Inc. Tranche 3 Term Loan B, 7.02% - 7.32% due 1/15/2012 1,515,201 Channel Master Holdings, Inc. (d)(g): 128,199 Revolving Credit, 8.313% due 11/15/2004 10,897 2,065,112 Term Loan, 9% due 11/15/2004 175,535 3,295,699 GenTek, Inc. First Lien Term Loan, 6.76% - 7.50% due 2/28/2011 3,324,022 Invensys International Holdings Ltd.: 2,241,036 First Lien Term Loan, 7.791% due 9/04/2009 2,274,652 2,000,000 Second Lien Term Loan, 9.431% due 12/04/2009 2,045,000 243,243 Itron, Inc. Tranche C Term Loan, 6.375% - 8.25% due 12/17/2010 244,764 1,491,334 JohnsonDiversey Inc. Delayed Draw Term Loan, 7.13% - 7.19% due 12/15/2011 1,509,043 11,970,000 Mueller Group LLC Term Loan B, 6.466% - 6.918% due 10/03/2012 12,131,380 3,061,984 Trimas Corp. Term Loan B, 8.375% due 12/31/2009 3,095,154 --------------- 30,282,114 Packaging--2.3% 1,469,333 BWAY Corp. Term Loan B, 6.813% due 6/30/2011 1,490,226 3,909,004 Berry Plastics Corp. Tranche 2 Term Loan B, 6.447% due 12/02/2011 3,967,233 10,917,500 Graham Packaging Co. LP Term Loan B, 6.563% - 6.938% due 10/07/2011 11,074,439 Owens-Illinois Group, Inc.: 730,099 Term Loan A, 6.36% due 4/01/2007 733,445 394,214 Term Loan B, 6.35% due 4/01/2008 396,740 4,712,914 Tranche Term Loan C, 6.39% due 4/01/2008 4,743,845 --------------- 22,405,928 Paper--2.3% 4,433,077 Boise Cascade Holdings LLC Tranche D Term Loan, 6.281% - 6.375% due 10/28/2011 4,495,291 3,000,000 Georgia Pacific Corp. First Lien Term Loan B, 6.88% due 2/14/2013 3,026,757 3,277,343 Graphic Packaging International, Inc. Term Loan B, 6.716% - 7.19% due 8/08/2010 3,333,818 SP Newsprint Co. Tranche B-1: 3,182,818 Credit Linked Deposit, 4.379% due 1/09/2010 3,230,560 1,230,598 Term Loan, 6.82% - 6.86% due 1/09/2010 1,249,057 Smurfit Stone Container Corp.: 2,008,590 Deposit Account, 4.57% due 11/01/2010 2,036,083 3,084,020 Term Loan C, 5.875% - 6.875% due 11/01/2011 3,127,581 2,346,702 Term Loan C, 6.75% - 6.875% due 11/01/2011 2,379,849 --------------- 22,878,996 Retail--2.0% 1,670,000 Advance Stores Co., Inc. Delay Draw Term Loan, 6.063% - 6.188% due 9/30/2010 1,686,700 1,740,861 American Reprographics Co. Term Loan, 6.32% - 8.25% due 6/18/2009 1,760,446 Face Senior Secured Amount Floating Rate Loan Interests* Value Retail (concluded) $ 4,906,184 Dollarama Group Term Loan B, 6.493% - 6.918% due 11/18/2011 $ 4,961,379 3,694,639 General Nutrition Centers, Inc. Tranche B Term Loan, 7.61% - 7.80% due 12/05/2009 3,746,596 6,882,911 The Neiman Marcus Group, Inc. Term Loan, 6.947% due 4/06/2013 6,990,457 --------------- 19,145,578 Service--4.2% 2,124,000 Alliance Laundry Systems LLC Term Loan, 6.73% due 1/27/2012 2,154,532 Allied Waste North America, Inc.: 9,131,529 Term Loan, 6.09% - 6.97% due 1/15/2012 9,236,635 3,545,270 Tranche A Credit Linked Deposit, 6.39% due 1/15/2012 3,588,480 5,880,450 Buhrmann USA, Inc. Term Loan C, 6.238% - 6.44% due 12/23/2010 5,963,147 5,000,000 Clarke American Term Loan B, 7.75% - 7.92% due 12/15/2011 5,068,750 5,736,387 Great Lakes Dredge & Dock Corp. Tranche B Term Loan, 7.40% - 8.24% due 12/23/2010 5,818,848 7,682,418 Prime Succession, Inc. Term Loan, 5.75% due 8/01/2003 (d)(g) 0 3,000,000 RGIS Inventory Specialists First Lien Term Loan, 7.12% due 12/31/2012 3,020,625 4,117,500 U.S. Investigations Service, 7.00% - 7.04% due 10/14/2012 4,156,102 United Rentals, Inc.: 1,620,263 Term Loan, 6.86% due 2/14/2011 1,641,192 329,825 Tranche B Credit Linked Deposit, 4.57% due 2/14/2011 334,085 --------------- 40,982,396 Steel--0.0% 10,162,693 Acme Metals, Inc. Term Loan, 11.75% due 12/01/2005 (d)(g) 0 Telecommunications--1.3% 2,000,000 Alaska Communications Systems Holdings, Inc. Term Loan, 6.527% due 2/01/2012 2,019,000 7,998,750 Consolidated Communications, Inc. Term Loan D, 6.28% - 6.52% due 10/14/2011 8,090,400 3,000,000 Time Warner Telecom Term Loan B, 7.11% due 11/30/2010 3,053,751 --------------- 13,163,151 Transportation--0.4% 4,268,374 Sirva Worldwide Tranche B Term Loan, 8.55% - 8.57% due 12/01/2010 4,122,536 Utility--4.9% 2,000,000 AES Corp. Term Loan, 5.69% - 6.75% due 4/30/2008 2,026,000 4,586,785 Cogentrix Delaware Holdings, Inc. Term Loan, 6.28% due 4/15/2012 4,638,863 Covanta Energy Corp.: 3,980,488 First Lien Letter of Credit, 3.36% due 6/24/2012 4,050,146 2,684,634 First Lien Term Loan, 7.581% due 6/24/2012 2,731,615 4,100,000 Second Lien Term Loan, 10.019% - 10.081% due 6/24/2013 4,176,875 MERRILL LYNCH SENIOR FLOATING RATE FUND II, INC. FEBRUARY 28, 2006 Schedule of Investments (continued) Master Senior Floating Rate Trust Face Senior Secured Amount Floating Rate Loan Interests* Value Utility (concluded) El Paso Corp.: $ 3,937,500 Deposit Account, 4.29% due 11/23/2009 $ 3,979,608 6,431,250 Term Loan, 7.313% due 11/23/2009 6,513,872 9,925,000 KGen LLC Tranche A Term Loan, 7.152% due 8/05/2011 9,925,000 997,500 LSP Kendall Energy Term Loan B, 6.527% due 10/07/2013 999,578 La Paloma: 123,857 Delay Draw Term Loan, 6.277% due 8/16/2012 125,204 262,295 Letter of Credit, 6.331% due 8/16/2012 265,148 2,000,000 Second Lien Term Loan, 8.027% due 8/16/2013 2,032,500 1,555,149 Term Loan, 6.277% due 8/16/2012 1,508,494 2,750,000 Metcalf Energy Center LLC Tranche 1 Term Loan, 7.81% due 5/20/2010 2,777,500 2,493,745 Reliant Energy, Inc. Term Loan, 6.089% due 4/30/2010 2,491,211 --------------- 48,241,614 Wireless Communications--0.9% 3,941,667 Centennial Cellular Operating Co. Term Loan, 6.27% - 6.45% due 2/09/2011 3,999,688 4,500,000 Nextel Partners, Inc. Term Loan D, 5.91% due 5/31/2012 4,514,999 --------------- 8,514,687 Total Senior Secured Floating Rate Loan Interests (Cost--$827,199,753)--81.6% 798,279,602 Corporate Bonds Broadcasting--0.0% 145,714 Emmis Communications Corp.,10.366% due 6/15/2012 (a) 145,714 250,000 XM Satellite Radio, Inc., 10.18% due 5/01/2009 (a) 253,438 --------------- 399,152 Cable--U.S.--0.1% 500,000 Intelsat Bermuda Ltd., 9.609% due 1/15/2012 (a)(b) 510,000 Chemicals--0.6% 5,992,000 GEO Specialty Chemicals, Inc.,13.036% due 12/31/2009 (h) 5,153,120 1,102,853 PCI Chemicals Canada, Inc.,10% due 12/31/2008 1,155,239 --------------- 6,308,359 Diversified Media--0.0% 250,000 Universal City Florida Holding Co. I, 9.43% due 5/01/2010 (a) 253,750 Information Technology--0.4% 3,850,000 Sungard Data Systems, Inc., 9.431% due 8/15/2013 (a)(b) 4,061,750 Leisure--1.0% 9,200,000 FelCor Lodging LP, 8.83% due 6/01/2011 (a) 9,568,000 Paper--0.1% 250,000 Boise Cascade LLC, 7.475% due 10/15/2012 (a) 248,750 650,000 NewPage Corp.,10.93% due 5/01/2012 (a) 682,500 --------------- 931,250 Face Amount Corporate Bonds Value Telecommunications--1.8% $ 9,500,000 Qwest Communications International, Inc., 8.249% due 2/15/2009 (a) $ 9,701,875 275,000 Qwest Corp., 7.741% due 6/15/2013 (a) 300,438 7,000,000 Time Warner Telecom Holdings, Inc., 8.749% due 2/15/2011 (a) 7,148,750 --------------- 17,151,063 Wireless Communications--0.0% 250,000 Rogers Wireless Communications, Inc., 7.616% due 12/15/2010 (a) 258,750 Total Corporate Bonds (Cost--$41,716,041)--4.0% 39,442,074 Shares Held Common Stocks Chemicals--0.0% 39,151 GEO Specialty Chemicals, Inc. (g) 176,181 Steel--0.0% 51,714 Acme Package Corp. Senior Holdings (g)(i) 0 Total Common Stocks (Cost--$0)--0.0% 176,181 Warrants (c) Paper--0.0% 57 Cellu Tissue Holdings, Inc. Series A (expires 9/28/2011) 0 Utility--0.0% 9,115 Reliant Resources (expires 10/25/2008) 55,829 Total Warrants (Cost--$1)--0.0% 55,829 Beneficial Interest Other Interests (e) Health Care--0.0% $ 14,398 MEDIQ Inc. (Preferred Stock Escrow) 0 Total Other Interests (Cost--$0)--0.0% 0 Short-Term Securities $129,287,906 Merrill Lynch Liquidity Series, LLC Cash Sweep Series I, 4.42% (a)(f) 129,287,906 Total Short-Term Securities (Cost--$129,287,906)--13.2% 129,287,906 Total Investments (Cost--$998,203,701**)--98.8% 967,241,592 Other Assets Less Liabilities--1.2% 11,544,618 --------------- Net Assets--100.0% $ 978,786,210 =============== MERRILL LYNCH SENIOR FLOATING RATE FUND II, INC. FEBRUARY 28, 2006 Schedule of Investments (concluded) Master Senior Floating Rate Trust * 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. ** The cost and unrealized appreciation (depreciation) of investments, as of February 28, 2006, as computed for federal income tax purposes, were as follows: Aggregate cost $ 998,339,823 ================ Gross unrealized appreciation $ 9,233,188 Gross unrealized depreciation (40,331,419) ---------------- Net unrealized depreciation $ (31,098,231) ================ (a) Floating rate security. (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) As a result of bankruptcy proceedings, the issuer did not repay the principal amount of the security upon maturity. (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, for purposes of 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, 4.42% $(415,850) $1,739,613 (g) Non-income producing security. (h) Convertible security. (i) Restricted security as to resale, representing 0.0% of net assets, was as follows: Acquisition Issue Date Cost Value Acme Package Corp. Senior Holdings 11/25/2002 $ -- $ 0 o For Trust compliance purposes, the Trust's industry classifications refer to 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. Industries shown are as a percent of net assets. See Notes to Financial Statements. MERRILL LYNCH SENIOR FLOATING RATE FUND II, INC. FEBRUARY 28, 2006 Statement of Assets and Liabilities Master Senior Floating Rate Trust As of February 28, 2006 Assets Investments in unaffiliated securities, at value (identified cost--$868,915,795) $ 837,953,686 Investments in affiliated securities, at value (identified cost--$129,287,906) 129,287,906 Cash 7,830,787 Receivables: Interest $ 6,535,461 Contributions 766,876 Securities sold 536,250 Commitment fees 14,048 7,852,635 --------------- Prepaid expenses 3,544 --------------- Total assets 982,928,558 --------------- Liabilities Unfunded loan commitment 437,225 Payables: Securities purchased 3,000,000 Investment adviser 584,284 Other affiliates 14,787 3,599,071 --------------- Accrued expenses and other liabilities 106,052 --------------- Total liabilities 4,142,348 --------------- Net Assets Net assets $ 978,786,210 =============== Net Assets Consist of Investors' capital $ 1,010,113,396 Unrealized depreciation--net (31,327,186) --------------- Net Assets $ 978,786,210 =============== See Notes to Financial Statements. MERRILL LYNCH SENIOR FLOATING RATE FUND II, INC. FEBRUARY 28, 2006 Statement of Operations Master Senior Floating Rate Trust For the Six Months Ended February 28, 2006 Investment Income Interest (including $1,739,613 from affiliates) $ 32,737,260 Facility and other fees 275,577 Dividends 41,371 --------------- Total income 33,054,208 --------------- Expenses Investment advisory fees $ 4,646,370 Accounting services 171,463 Professional fees 82,475 Custodian fees 24,180 Trustees' fees and expenses 19,416 Pricing fees 6,466 Printing and shareholder reports 1,068 Other 17,177 --------------- Total expenses 4,968,615 --------------- Investment income--net 28,085,593 --------------- Realized & Unrealized Gain (Loss)--Net Realized loss on investments--net (1,221,676) Change in unrealized depreciation on: Investments--net 410,915 Unfunded corporate loans--net (4,753) 406,162 --------------- --------------- Total realized and unrealized loss--net (815,514) --------------- Net Increase in Net Assets Resulting from Operations $ 27,270,079 =============== See Notes to Financial Statements. MERRILL LYNCH SENIOR FLOATING RATE FUND II, INC. FEBRUARY 28, 2006 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: 2006 2005 Operations Investment income--net $ 28,085,593 $ 46,965,092 Realized gain (loss)--net (1,221,676) 1,613,248 Change in unrealized depreciation--net 406,162 10,177,092 --------------- --------------- Net increase in net assets resulting from operations 27,270,079 58,755,432 --------------- --------------- Capital Transactions Proceeds from contributions 34,749,187 132,214,555 Fair value of withdrawals (116,052,183) (211,031,968) --------------- --------------- Net decrease in net assets derived from capital transactions (81,302,996) (78,817,413) --------------- --------------- Net Assets Total decrease in net assets (54,032,917) (20,061,981) Beginning of period 1,032,819,127 1,052,881,108 --------------- --------------- End of period $ 978,786,210 $ 1,032,819,127 =============== =============== See Notes to Financial Statements. Financial Highlights Master Senior Floating Rate Trust For the Six Months Ended The following ratios have been derived from February 28, For the Year Ended August 31, information provided in the financial statements. 2006 2005 2004 2003 2002 Total Investment Return Total investment return 2.78%++ 5.78% 10.15% 11.07% (4.66%) ========== ========== ========== ========== ========== Ratios to Average Net Assets Expenses, excluding interest expense 1.02%* 1.01% 1.02% 1.04% 1.09% ========== ========== ========== ========== ========== Expenses 1.02%* 1.01% 1.02% 1.05% 1.12% ========== ========== ========== ========== ========== Investment income--net 5.74%* 4.52% 3.81% 4.80% 5.31% ========== ========== ========== ========== ========== 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) $ 978,786 $1,032,819 $1,052,881 $ 942,878 $ 182,205 ========== ========== ========== ========== ========== Portfolio turnover 22.90% 52.92% 76.45% 56.56% 36.77% ========== ========== ========== ========== ========== * Annualized. ++ Aggregate total investment return. See Notes to Financial Statements. MERRILL LYNCH SENIOR FLOATING RATE FUND II, INC. FEBRUARY 28, 2006 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 Loan Interests. 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 Loan Interests at February 28, 2006 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, Fund Asset Management L.P. ("FAM") will value the Loan Interests at fair value, which is intended to approximate market value. Debt securities are traded primarily in the over-the-counter markets ("OTC") and are valued at the last available bid price in the OTC market or on the basis of values obtained by a pricing service. Pricing services use valuation matrixes that incorporate both dealer-supplied valuations and valuation models. The procedures of the pricing service and its valuations are reviewed by the officers of the Trust under the general direction of the Board of Trustees. Such valuations and procedures will be reviewed periodically by the Board of Trustees of the Trust. 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 asked 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 asked 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 asked 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. Swap agreements are valued based upon quoted fair valuations received daily by the Trust from a pricing service or counterparty. 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 FAM believes that this method no longer produces fair valuations. Repurchase agreements will be valued at cost plus accrued interest. MERRILL LYNCH SENIOR FLOATING RATE FUND II, INC. FEBRUARY 28, 2006 Notes to Financial Statements (continued) Master Senior Floating Rate Trust Generally, trading in foreign securities, as well as U.S. government securities, money market instruments and certain fixed income securities, 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 FAM 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 pre-determined 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 Trust are recorded in the accompanying Statement of Operations as realized gains and losses, respectively. Gains or losses are also realized upon termination of the swap agreements. Swaps are marked-to-market daily 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 II, INC. FEBRUARY 28, 2006 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 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, 2006, the Trust reimbursed FAM $9,579 for certain accounting services. Certain officers and/or trustees of the Trust are officers and/or directors of FAM, PSI, ML & Co., and/or MLIM, LLC. In February 2006, ML & Co. and BlackRock, Inc. entered into an agreement to merge ML & Co.'s investment management business, including FAM, with the investment management business of BlackRock, Inc. The transaction is expected to close in the third quarter of 2006. 3. Investments: Purchases and sales (including paydowns) of investments, excluding short-term securities, for the six months ended February 28, 2006 were $203,006,622 and $259,917,926, respectively. 4. Unfunded Loan Interests: As of February 28, 2006, the Trust had unfunded loan commitments of approximately $22,816,000, which would be extended at the option of the borrower, pursuant to the following loan agreements: (in Thousands) Unfunded Borrower Commitment Value American Seafoods Group LLC $3,000 $3,030 Dex Media West, Inc. $ 351 $ 354 JohnsonDiversey Inc. $ 509 $ 511 Maguire Properties, LP $5,000 $4,863 Trump Entertainment Resorts Holdings LP Revolving Line of Credit $5,000 $4,875 Trump Entertainment Resorts Holdings LP Term Loan B-1 $2,487 $2,517 United Air Lines $ 469 $ 469 Vought Aircraft Industries, Inc $6,000 $5,760 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. On November 23, 2005 the credit agreement was renewed for one year under substantially the same terms. The Trust did not borrow under the credit agreement during the six months ended February 28, 2006. MERRILL LYNCH SENIOR FLOATING RATE FUND II, INC. FEBRUARY 28, 2006 Disclosure of Investment Advisory Agreement Activities and Composition of the Board of Directors/Trustees All but one member of the Fund's Board of Directors and Master Senior Floating Rate Trust's (the "Trust") Board of Trustees, the members of which are identical, is a non-interested director and trustee as that term is defined in the Investment Company Act of 1940, whose only association with Fund Asset Management, L.P. (the "Investment Adviser") or other Merrill Lynch affiliates is as a director and trustee of the Fund and the Trust, and of certain other funds advised by the Investment Adviser or its affiliates. We refer to these persons as independent directors throughout this report. The Chairman of each Board is an independent director and nominees to become independent directors are chosen by a Nominating Committee comprised of independent directors. All independent directors also are members of each Board's Audit Committee. The independent directors meet in executive session at each regular Board meeting. Each Board and each Board's Audit Committee meet in person for at least two days each quarter and conduct other in-person and telephone meetings throughout the year, some of which are formal Board meetings and some of which are informational meetings. Independent counsel to the independent directors attends all in-person Board and Audit Committee meetings and other meetings at the request of the independent directors. Investment Advisory Agreement--Matters Considered by the Board Every year, each Board considers approval of the investment advisory agreement with respect to the Fund and the Trust (the "Investment Advisory Agreement") and throughout each year, reviews and evaluates the performance of and services provided by the Investment Adviser. Each Board assesses the nature, scope and quality of the services provided to the Fund and/or the Trust by the personnel of the Investment Adviser and its affiliates, including administrative services, shareholder services, oversight of fund accounting, marketing services and assistance in meeting legal and regulatory requirements. Each Board also receives and assesses information regarding the services provided to the Fund and the Trust by certain unaffiliated service providers. At various times throughout the year, each Board also considers a range of information in connection with its oversight of the services provided by the Investment Adviser and its affiliates. Among the matters considered with respect to the Fund and the Trust are: (a) fees (in addition to management fees) paid to the Investment Adviser and its affiliates by the Fund and the Trust, such as transfer agency fees and fees for marketing and distribution; (b) Fund/Trust operating expenses paid to third parties; (c) the resources devoted to and compliance reports relating to the Fund's and the Trust's investment objective, policies and restrictions, and the Fund's/Trust's compliance with its respective Code of Ethics and the Investment Adviser's compliance policies and procedures; and (d) the nature, cost and character of non-investment management services provided by the Investment Adviser and its affiliates. Each Board believes that the Investment Adviser is one of the most experienced global asset management firms and considers the overall services provided by the Investment Adviser to be of high quality. Each Board also believes that the Investment Adviser is financially sound and well managed and notes that the Investment Adviser is affiliated with one of America's largest financial firms. Each Board works closely with the Investment Adviser in overseeing the Investment Adviser's efforts to achieve good performance. As part of this effort, each Board discusses portfolio manager effectiveness and, when performance is not satisfactory, discusses with the Investment Adviser taking steps such as changing investment personnel. Annual Consideration of Approval by the Board of Directors/Trustees--In the period prior to the Board meeting to consider renewal of the Investment Advisory Agreement, each Board requests and receives materials specifically relating to the Investment Advisory Agreement. These materials include (a) information compiled by Lipper Inc. ("Lipper") on the fees and expenses and the investment performance of the Fund as compared to a comparable group of funds as classified by Lipper; (b) information comparing the Fund's market price with its net asset value per share; (c) a discussion by the Trust's/Fund's portfolio management team regarding investment strategies used by the Trust/Fund during its most recent fiscal year; (d) information on the profitability to the Investment Adviser and its affiliates of the Investment Advisory Agreement and other relationships with the Trust and the Fund; and (e) information provided by the Investment Adviser concerning investment advisory fees charged to other clients such as institutional clients or retail offshore funds under similar investment mandates. The Board also considers other matters it deems important to the approval process such as payments made to the Investment Adviser or its affiliates in connection with services related to the valuation and pricing of portfolio holdings, allocation of brokerage fees of the Fund, the portfolio turnover statistics of the Fund, and direct and indirect benefits to the Investment Adviser and its affiliates from their relationship with the Trust and the Fund. The Board did not identify any particular information as controlling, and each member of the Board may have attributed different weights to the various items considered. MERRILL LYNCH SENIOR FLOATING RATE FUND II, INC. FEBRUARY 28, 2006 Disclosure of Investment Advisory Agreement (continued) Certain Specific Renewal Data In connection with the most recent renewal of the Trust's/Fund's Investment Advisory Agreements in February, 2006, the non-interested Directors'/Trustees' and Boards' review included the following: The Investment Adviser's Services and Fund Performance--Each Board reviewed the nature, extent and quality of services provided by the Investment Adviser, including the investment advisory services and the resulting performance of the Fund. Each Board focused primarily on the Investment Adviser's investment advisory services and the Fund's investment performance. Each Board compared the Fund's performance - both including and excluding the effects of the fees and expenses of the Trust and the Fund - to the performance of a comparable group of funds, and the performance of a relevant index or combination of indexes. While each Board reviews performance data at least quarterly, consistent with the Investment Adviser's investment goals, the Board attaches more importance to performance over relatively long periods of time, typically three to five years. According to Lipper's ranking of all closed-end no-load and level-load nonleveraged loan participation funds, for the periods ended November 30, 2005, the Fund's performance after fees and expenses ranked in the fourth quintile for the one-year period, in the third quintile for the three-year period, and in the second quintile for the five-year period. The Board also considered the Fund's performance based on annualized yields, and noted the Fund's yield was in the fourth quintile for the most recent fiscal year, the third quintile for 2002 - 2004, and the fourth quintile for 2001. The Boards noted that the universe of comparable funds was very small. Considering these factors, each Board concluded that the nature and quality of these services supported the continuation of the Investment Advisory Agreement. The Investment Adviser's Personnel and Investment Process--Each Board reviewed the investment objectives and strategies of the Trust and the Fund. Each Board discussed with senior management of the Investment Adviser's taxable fixed income investing group the strategies being used to achieve the stated objectives. Among other things, each Board considered the size, education and experience of the Investment Adviser's taxable fixed income staff, noting the Investment Adviser has a management group within the taxable fixed income department dedicated to analyzing and investing in the types of bank loans held by the Trust, how that staff used technology to manage its taxable fixed income funds - including the Fund/Trust - and their investments, and the Investment Adviser's approach to training and retaining portfolio managers and other research, advisory and management personnel throughout the firm, including within the taxable fixed income management group. Each Board discussed these factors with senior management of the Investment Adviser and also discussed how the Investment Adviser's staffing and overall approach to taxable fixed income fund management affected the Fund/Trust. Each Board also reviewed the Investment Adviser's compensation policies and practices with respect to the Trust's portfolio manager. Each Board also considered the experience of the Fund's/Trust's portfolio manager and noted that Mr. Matteo has over 10 years' experience analyzing and investing in fixed income securities, including bank loans. Each Board concluded that the Investment Adviser and its investment staff and the Fund's/Trust's management team have extensive experience in analyzing and managing the types of investments used by the Fund/Trust and that the Fund/Trust benefits from that experience. Management Fees and Other Expenses--Each Board reviewed the Fund's and the Trust's contractual management fee rate and actual management fee rate as a percentage of total assets at common asset levels - the actual rate includes advisory and administrative service fees and the effects of any fee waivers - compared to the other funds considered comparable by Lipper. It also compared the Fund's/Trust's total expenses to those of other comparable funds. Each Board considered the services provided to and the fees charged by the Investment Adviser to institutional clients and retail offshore funds with similar investment mandates and noted that the fees charged by the Investment Adviser to offshore funds were slightly less than the fees charged by the Fund and the Trust, and fees charged to institutional clients were less than those being charged to the Fund and the Trust, but determined that the Investment Adviser provided less extensive services to the institutional clients. Each Board noted that while the Fund's/Trust's actual total expenses including investment-related expenses were below the median of comparable funds as classified by Lipper, the contractual and actual management fees were higher than those of the median of comparable funds. Each Board concluded that the Fund's management fee rate and overall expense ratio are reasonable when compared to those of other comparable funds. MERRILL LYNCH SENIOR FLOATING RATE FUND II, INC. FEBRUARY 28, 2006 Disclosure of Investment Advisory Agreement (concluded) Profitability--Each Board considered the cost of the services provided to the Fund and/or the Trust by the Investment Adviser and the Investment Adviser's and its affiliates' profits relating to the management and distribution of the Fund and the MLIM/FAM-advised funds. As part of its analysis, each Board reviewed the Investment Adviser's methodology in allocating its costs to the management of the Fund and the Trust and concluded that there was a reasonable basis for the allocation. Each Board considered federal court decisions discussing an investment adviser's profitability and profitability levels considered to be reasonable in those decisions. Each Board concluded that the Investment Adviser's profits are acceptable in relation to the nature and quality of services provided and given the level of fees and expenses overall. Economies of Scale--The Boards considered the extent to which economies of scale might be realized as the assets of the Fund/Trust increase and whether there should be changes in the management fee rate or structure in order to enable the Fund/Trust to participate in these economies of scale. While the Board concluded that it did not believe that the Trust's assets have reached a level where such economies are effectively available, the Board will continue to seek information relating to economies of scale. Conclusion After the independent directors deliberated in executive session, the Boards of the Fund and of the Trust including all of the independent directors/trustees, approved the renewal of the existing Investment Advisory Agreement, concluding that the advisory fee was reasonable in relation to the services provided and that a contract renewal was in the best interests of the shareholders. MERRILL LYNCH SENIOR FLOATING RATE FUND II, INC. FEBRUARY 28, 2006 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 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 MERRILL LYNCH SENIOR FLOATING RATE FUND II, INC. FEBRUARY 28, 2006 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 - as of March 31, 2006. (a)(1) Mr. Kevin J. Booth is primarily responsible for the day-to- day management of the registrant's portfolio ("Portfolio Manager"). Mr. Booth has been a Managing Director of the Investment Adviser since 2006 and was previously a Director at the Investment Adviser. He has been a portfolio manager of the Fund since 2006. He has more than eleven years of investment experience, including the analysis and management of senior floating rate loans and the use of leverage techniques to manage portfolios. Mr. Booth joined MLIM in 1991 and has core experience in bank loans, high yield and distressed investing. (a)(2) As of March 31, 2006*: (iii) Number of Other Accounts and (ii) Number of Other Accounts Managed Assets for Which Advisory Fee is and Assets by Account Type Performance-Based Other Other (i) Name of Registered Other Pooled Registered Other Pooled Portfolio Investment Investment Other Investment Investment Other Manager Companies Vehicles Accounts Companies Vehicles Accounts Kevin J. Booth 4 6 0 0 0 0 $ 1,604,127,753 $ 2,532,009,251 $ 0 $ 0 $ 0 $ 0 * As of April 3, 2006, Mr. Booth took on additional asset management responsibilities. The data represents Mr. Booth's assets under management as of that date. (iv) Potential Material Conflicts of Interest Real, potential or apparent conflicts of interest may arise when a portfolio manager has day-to-day portfolio management responsibilities with respect to more than one fund or account, including the following: Certain investments may be appropriate for the Fund and also for other clients advised by the Investment. Adviser and its affiliates, including other client accounts managed by the Fund's portfolio management team. Investment decisions for the Fund and other clients are made with a view to achieving their respective investment objectives and after consideration of such factors as their current holdings, availability of cash for investment and the size of their investments generally. Frequently, a particular security may be bought or sold for only one client or in different amounts and at different times for more than one but less than all clients. Likewise, because clients of the Investment Adviser and its affiliates may have differing investment strategies, a particular security may be bought for one or more clients when one or more other clients are selling the security. The investment results for the Fund may differ from the results achieved by other clients of the Investment Adviser and its affiliates and results among clients may differ. In addition, purchases or sales of the same security may be made for two or more clients on the same day. In such event, such transactions will be allocated among the clients in a manner believed by the Investment Adviser and its affiliates to be equitable to each. The Investment Adviser will not determine allocations based on whether it receives a performance based fee from the client. In some cases, the allocation procedure could have an adverse effect on the price or amount of the securities purchased or sold by the Fund. Purchase and sale orders for the Fund may be combined with those of other clients of the Investment Adviser and its affiliates in the interest of achieving the most favorable net results to the Fund. To the extent that the Fund's portfolio management team has responsibilities for managing accounts in addition to the Fund, a portfolio manager will need to divide his time and attention among relevant accounts. In some cases, a real, potential or apparent conflict may also arise where (i) the Investment Adviser may have an incentive, such as a performance based fee, in managing one account and not with respect to other accounts it manages or (ii) where a member of the Fund's portfolio management team owns an interest in one fund or account he or she manages and not another. (a)(3) As of March 31, 2006: Portfolio Manager Compensation The Portfolio Manager Compensation Program of MLIM and its affiliates, including the Investment Adviser (collectively, "MLIM"), is critical to MLIM's ability to attract and retain the most talented asset management professionals. This program ensures that compensation is aligned with maximizing investment returns and it provides a competitive pay opportunity for competitive performance. Compensation Program The elements of total compensation for MLIM portfolio managers are a fixed base salary, annual performance-based cash and stock compensation (cash and stock bonus) and other benefits. MLIM has balanced these components of pay to provide portfolio managers with a powerful incentive to achieve consistently superior investment performance. By design, portfolio manager compensation levels fluctuate--both up and down--with the relative investment performance of the portfolios that they manage. Base Salary Under the MLIM approach, like that of many asset management firms, base salaries that are fixed on an annual basis represent a relatively small portion of a portfolio manager's total compensation. This approach serves to enhance the motivational value of the performance-based (and therefore variable) compensation elements of the compensation program. Performance-Based Compensation MLIM believes that the best interests of investors are served by recruiting and retaining exceptional asset management talent and managing their compensation within a consistent and disciplined framework that emphasizes pay for performance in the context of an intensely competitive market for talent. To that end, portfolio manager incentive compensation for MLIM and its affiliates is based on a formulaic compensation program. MLIM's formulaic portfolio manager compensation program includes: investment performance relative to general closed-end, non-leveraged, fixed income funds over 1-, 3-, and 5-year performance periods and a measure of operational efficiency. Portfolio managers are compensated based on the pre-tax performance of the products they manage. A discretionary element of portfolio manager compensation may include consideration of: financial results of MLIM, expense control, profit margins, strategic planning and implementation, quality of client service, market share, corporate reputation, capital allocation, compliance and risk control, leadership, workforce diversity, technology and innovation. MLIM and its affiliates also consider the extent to which individuals exemplify and foster Merrill Lynch's principles of client focus, respect for the individual, teamwork, responsible citizenship and integrity. All factors are considered collectively by MLIM management. Cash Bonus Performance-based compensation is distributed to portfolio managers in a combination of cash and stock. Typically, the cash bonus, when combined with base salary, represents more than 60% of total compensation for portfolio managers. Stock Bonus A portion of the dollar value of the total annual performance-based bonus is paid in restricted shares of Merrill Lynch & Co., Inc. (herein, the "Company") stock. Paying a portion of annual bonuses in stock puts compensation earned by a portfolio manager for a given year "at risk" based on the Company's ability to sustain and improve its performance over future periods. The ultimate value of stock bonuses is dependent on future Company stock price performance. As such, the stock bonus aligns each portfolio manager's financial interests with those of the Company shareholders and encourages a balance between short-term goals and long-term strategic objectives. Management strongly believes that providing a significant portion of competitive performance-based compensation in stock is in the best interests of investors and shareholders. This approach ensures that portfolio managers participate as shareholders in both the "downside risk" and "upside opportunity" of the Company's performance. Portfolio managers therefore have a direct incentive to protect the Company's reputation for integrity. Other Compensation Programs Portfolio managers who meet relative investment performance and financial management objectives during a performance year are eligible to participate in a deferred cash program. Awards under this program are in the form of deferred cash that may be benchmarked to a menu of MLIM mutual funds (including their own fund) during a five-year vesting period. The deferred cash program aligns the interests of participating portfolio managers with the investment results of MLIM products and promotes continuity of successful portfolio management teams. Other Benefits Portfolio managers are also eligible to participate in broad-based plans offered generally to the Company's employees, including broad-based retirement, 401(k), health, and other employee benefit plans. (a)(4) Beneficial Ownership of Securities. As of March 31, 2006, Mr. Booth does not beneficially own any stock issued by the Fund. 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 II, 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 II, Inc. and Master Senior Floating Rate Trust Date: April 20, 2006 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 II, Inc. and Master Senior Floating Rate Trust Date: April 20, 2006 By: /s/ Donald C. Burke --------------------------- Donald C. Burke, Chief Financial Officer of Merrill Lynch Senior Floating Rate Fund II, Inc. and Master Senior Floating Rate Trust Date: April 20, 2006