UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM N-CSR CERTIFIED SHAREHOLDER REPORT OF REGISTERED MANAGEMENT INVESTMENT COMPANIES Investment Company Act file number 811-07885 Name of Fund: Master Enhanced S&P 500 Series of Quantitative Master Series 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, Master Enhanced S&P 500 Series of Quantitative Master Series 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: 12/31/06 Date of reporting period: 01/01/06 - 12/31/06 Item 1 - Report to Stockholders Master Enhanced S&P 500 Series of Quantitative Master Series Trust Annual Report, December 31, 2006 A Discussion With Your Fund's Portfolio Managers Amid a volatile investing environment, the Fund met its objective of closely tracking the performance of the benchmark Standard & Poor's 500 (S&P 500) Index during the 12-month period. How did the portfolio perform during the fiscal year in light of the existing market conditions? For the 12-month period ended December 31, 2006, Master Enhanced S&P 500 Series of Quantitative Master Series Trust had a total return of +15.64%. For the same period, the S&P 500 Index generated a +15.80% return. Positive performance from our stock-substitution strategies was offset slightly by disappointing results from our stock-selection strategies. With respect to our stock-substitution strategies, performance benefited primarily from merger arbitrage strategies. Portfolio trading conducted in response to structural index changes also contributed positively to performance. Regarding our stock-selection strategies, the value, turn of the year and earnings quality signals aided performance. Among the detractors were price momentum, earnings surprise, short interest and external financing signals. Risk control positions also hindered performance during the annual period. Following decent, but uninspiring, results in 2004 and 2005, U.S. equities surged forward in 2006, with the S&P 500 Index advancing 15.80% to close at 1,418. Small-cap stocks posted even 1 stronger gains, with the Russell 2000 Index registering an 18.40% increase, thanks to exceptionally strong performance in the first few months of the year. Key highlights of the 12-month period include weaker economic growth triggered by a slowdown in the U.S. housing market; a long-awaited pause in the Federal Reserve Board's (the Fed) interest rate-hiking campaign; threats of higher inflation; and robust corporate earnings, which rose by double-digit percentages for an unprecedented fifth consecutive year. Amid these crosscurrents, financial markets were left to weather a high degree of volatility. At the outset, a burgeoning corporate sector, ample liquidity and record levels of merger-and-acquisition (M&A) activity provided a solid backdrop for equity markets. During the first few months of 2006, U.S. stocks were solidly on an upward trajectory, posting the best first quarter gains in several years. Of note, the S&P 500 Index advanced 4.21% in the quarter, marking its largest gain since the fourth quarter of 2004 (+9.23%) and its best first quarter since 1999 (+4.98%). Growth continued outside of the housing and auto sectors (capital spending in particular expanded at a brisk pace); private equity deals, M&A action and corporate buy-backs abounded in high volumes; and corporate cash flows held steady. Notwithstanding such broad-based strength, evidence of an economic slowdown mounted. By May, there was a striking shift in investor sentiment, triggered by a deceleration in consumer spending, rising energy prices, a slump in housing activity and uncertainty around Fed policy and the sustainability of economic growth. Stock market volatility took on a more negative spin and eventually resulted in the first double-digit correction for U.S. equity markets in nearly four years. The average U.S. stock fell by about 12%, with stocks outside the U.S. suffering even 2 greater losses. The pullback could be attributed to several factors, not the least of which was that the lagged effects of higher interest rates and oil prices finally took their toll on both the economy and stock prices. Further, a resurgence of inflation fears prompted the Fed to continue its interest rate tightening campaign. Under the auspices of new Chairman Ben Bernanke, the central bank ended the second quarter with its 17th consecutive 25-basis-point interest rate hike since June 2004, bringing the target federal funds rate to 5.25%. As the second half of 2006 got underway, positive momentum returned to the market. The Fed made big news in August by finally ending its streak of rate increases. At the same time, commodity prices collapsed. After reaching an all-time high near $78 per barrel in July, crude oil ended the year at $61 per barrel. Stocks generally climbed back above the levels they reached prior to the market's earlier retrenchment. Most equity markets experienced one of their best third-quarter periods in several years, though there was a broad-based changing of the guard that favored larger-cap, higher-quality and more predictable stocks over smaller-cap, lower-quality and more cyclical securities (which dominated early in the year). Macroeconomic uncertainty persisted in the third quarter. Investors struggled with moderating economic activity - real gross domestic product growth came in at 2.2%, compared to 2.6% in the second quarter and 5.6% in the first quarter. The magnitude of the housing downturn and its effect on the consumer sector was a significant wildcard. Weakness in the U.S. dollar was challenging the stability of currency markets. Moreover, tensions in the Middle East were heating up, and economic data offered a mixed outlook for inflation. 3 Still, strong momentum continued in the equity markets during the year's final quarter. Key to investors' optimism were: a strong labor market, where the unemployment rate reached a post-9/11 low and year-on-year average hourly salaries reached a post-9/11 high; receding risks of higher inflation and high oil prices; and finally, the pervasive strength in corporate fundamentals that included reasonably good investment levels, healthy balance sheets and profit margins. 2006 ended and the new year began with the world awash in liquidity, global economic growth still quite strong despite the U.S. slowdown, record-high corporate profitability, fairly low inflation and interest rates, and relatively strong investor confidence. Small- and mid-cap stocks performed quite well during the 12-month period, but relinquished their leadership to the large-cap S&P 500 Index, which posted substantial returns during the second half of the year. Within the S&P 500, the value style of investing significantly outperformed the growth style for the period, with the S&P 500 Citigroup Value Index returning +20.80% versus the +11.00% return of the S&P 500 Citigroup Growth Index. Turning to sector performance, each of the 10 S&P 500 sectors posted positive returns for the annual period. The top performer was telecommunication services, which was up 32.13%, followed by energy and consumer discretionary, with respective returns of +22.22% and +17.23%. Information technology and health care were the weakest performers, with respective returns of +7.70% and +5.78%. 4 What changes were made to the portfolio during the period? Throughout the fiscal year, as changes were made to the composition of the S&P 500 Index, we purchased and sold securities to maintain the Series' objective of tracking the risks and return of the benchmark. We continued to use our quantitative stock-selection and stock-substitution strategies in an effort to generate returns above those offered by the index. The goal of our stock-selection process is to use quantitative techniques to determine whether a stock might outperform or underperform the market. We analyze each security by using quantitative screens that provide signals that ultimately inform our investment decisions. These signals may include earnings quality, valuations, earnings surprises, external financing, short interest and price momentum factors, among others. We also apply stock-substitution strategies opportunistically as a value-added trading strategy. Our goal is to take advantage of temporary price strength in a security that might result from a corporate acquisition, corporate restructuring or index composition change. We also might employ convertible bond substitution when opportunities exist, taking a position in a company's convertible securities -- bonds that can be exchanged for shares of stock, in certain situations -- as a cheaper alternative to buying its equity shares. In December 2006, we implemented the turn of the year signal. We also removed the earnings surprise signal and increased the turn of the year signal exposure heading into year-end. 5 How would you characterize the portfolio's position at the close of the period? We believe the portfolio remains positioned to match the risk characteristics of its benchmark, regardless of the direction the market takes. Leon Roisenberg Vice President and Co-Portfolio Manager Jeffrey L. Russo, CFA Vice President and Co-Portfolio Manager January 19, 2007 6 Master Enhanced S&P 500 Series Portfolio Information As of December 31, 2006 Percent of Sector Representation Total Investments - -------------------------------------------------------------------------------- Financial Services 20.1% Information Technology 14.2 Industrials 11.7 Consumer Discretionary 10.9 Health Care 10.2 Energy 8.9 Consumer Staples 6.8 Utilities 3.9 Telecommunication Services 2.6 Materials 2.5 Other* 8.2 - -------------------------------------------------------------------------------- * Includes portfolio holdings in short-term investments. For Series compliance purposes, the Series' sector classifications refer to any one or more of the sector sub-classifications used by one or more widely recognized market indexes or ratings group indexes, and/or as defined by Series management. This definition may not apply for purposes of this report, which may combine sector sub-classifications for reporting ease. 7 Master Enhanced S&P 500 Series Schedule of Investments as of December 31, 2006 Shares Industry Held Common Stocks Value - ------------------------------------------------------------------------------------------------------------------------------ Aerospace & Defense - 2.4% 51,700 Boeing Co. $ 4,593,028 11,200 General Dynamics Corp. 832,720 70,800 Honeywell International, Inc. 3,202,992 300 L-3 Communications Holdings, Inc. 24,534 10,200 Lockheed Martin Corp. 939,114 14,100 Northrop Grumman Corp. 954,570 63,800 Raytheon Co. 3,368,640 7,100 Rockwell Collins, Inc. 449,359 ------------ 14,364,957 - ------------------------------------------------------------------------------------------------------------------------------ Air Freight & Logistics - 1.2% 9,100 FedEx Corp. 988,442 84,800 United Parcel Service, Inc. Class B (d) 6,358,304 ------------ 7,346,746 - ------------------------------------------------------------------------------------------------------------------------------ Airlines - 0.1% 32,213 Southwest Airlines Co. 493,503 - ------------------------------------------------------------------------------------------------------------------------------ Auto Components - 0.0% 3,400 Johnson Controls, Inc. 292,128 - ------------------------------------------------------------------------------------------------------------------------------ Automobiles - 0.2% 77,000 Ford Motor Co. (d) 578,270 15,300 General Motors Corp. 470,016 6,000 Harley-Davidson, Inc. 422,820 ------------ 1,471,106 - ------------------------------------------------------------------------------------------------------------------------------ Beverages - 0.3% 3,800 The Coca-Cola Co. 183,350 50,800 Constellation Brands, Inc. Class A (a) 1,474,216 12 Molson Coors Brewing Co. Class B 917 5,610 PepsiCo, Inc. 350,906 ------------ 2,009,389 - ------------------------------------------------------------------------------------------------------------------------------ Biotechnology - 0.8% 42,380 Amgen, Inc. (a) 2,894,978 8,010 Biogen Idec, Inc. (a) 394,012 1,800 Genzyme Corp. (a) 110,844 5,500 MedImmune, Inc. (a) 178,035 55,400 Sirna Therapeutics, Inc. (a) 720,754 18,200 Tanox, Inc. (a) 362,180 ------------ 4,660,803 - ------------------------------------------------------------------------------------------------------------------------------ Building Products - 0.3% 65,200 Masco Corp. 1,947,524 - ------------------------------------------------------------------------------------------------------------------------------ Capital Markets - 2.7% 2,900 Ameriprise Financial, Inc. 158,050 21,300 The Bank of New York Co., Inc. 838,581 185,900 The Charles Schwab Corp. 3,595,306 6,100 E*Trade Financial Corp. (a) 136,762 3,350 Franklin Resources, Inc. 369,070 15,700 Goldman Sachs Group, Inc. 3,129,795 29,600 Janus Capital Group, Inc. 639,064 17,100 Lehman Brothers Holdings, Inc. 1,335,852 25,000 Mellon Financial Corp. 1,053,750 48,800 Morgan Stanley 3,973,784 1,300 Northern Trust Corp. 78,897 7,700 State Street Corp. 519,288 2,900 T. Rowe Price Group, Inc. 126,933 ------------ 15,955,132 - ------------------------------------------------------------------------------------------------------------------------------ Chemicals - 0.8% 3,600 Air Products & Chemicals, Inc. 253,008 2,900 Ashland, Inc. 200,622 15,600 Monsanto Co. 819,468 14,100 PPG Industries, Inc. 905,361 38,600 Praxair, Inc. 2,290,138 ------------ 4,468,597 - ------------------------------------------------------------------------------------------------------------------------------ 8 Master Enhanced S&P 500 Series Schedule of Investments as of December 31, 2006 Shares Industry Held Common Stocks Value - ------------------------------------------------------------------------------------------------------------------------------ Commercial Banks - 3.7% 14,225 BB&T Corp. $ 624,904 200 Comerica, Inc. 11,736 5,318 Compass Bancshares, Inc. 317,219 13,534 Fifth Third Bancorp 553,947 10,100 Huntington Bancshares, Inc. 239,875 4,900 Interchange Financial Services Corp. 112,651 6,400 KeyCorp 243,392 14,400 Marshall & Ilsley Corp. 692,784 18,462 National City Corp. 674,971 12,102 PNC Financial Services Group, Inc. (b) 896,032 19,298 Regions Financial Corp. 721,745 8,737 State National Bancshares, Inc. 336,287 51,800 SunTrust Banks, Inc. 4,374,510 1,000 Synovus Financial Corp. 30,830 62,154 U.S. Bancorp 2,249,353 85,180 Wachovia Corp. 4,851,001 136,510 Wells Fargo & Co. 4,854,296 ------------ 21,785,533 - ------------------------------------------------------------------------------------------------------------------------------ Commercial Services & 56,799 Aramark Corp. 1,899,927 Supplies - 0.5% 4,700 Banta Corp. 171,080 21,900 Robert Half International, Inc. 812,928 ------------ 2,883,935 - ------------------------------------------------------------------------------------------------------------------------------ Communications Equipment - 2.4% 18,800 Avaya, Inc. (a) 262,824 3,414 Ciena Corp. (a) 94,602 143,500 Cisco Systems, Inc. (a) 3,921,855 8,300 Comverse Technology, Inc. (a) 175,213 87,700 Corning, Inc. (a) 1,640,867 112,500 Juniper Networks, Inc. (a) 2,130,750 144,203 Motorola, Inc. 2,964,814 67,600 QUALCOMM, Inc. 2,554,604 18,405 Tellabs, Inc. (a) 188,835 ------------ 13,934,364 - ------------------------------------------------------------------------------------------------------------------------------ Computers & Peripherals - 4.1% 40,700 Apple Computer, Inc. (a) 3,452,988 172,400 Dell, Inc. (a) 4,325,516 96,908 EMC Corp. (a) 1,279,186 147,107 Hewlett-Packard Co. 6,059,337 58,747 International Business Machines Corp. 5,707,271 26,000 Lexmark International, Inc. Class A (a) 1,903,200 300 NCR Corp. (a) 12,828 15,400 Network Appliance, Inc. (a) 604,912 6,500 QLogic Corp. (a) 142,480 144,800 Sun Microsystems, Inc. (a) 784,816 ------------ 24,272,534 - ------------------------------------------------------------------------------------------------------------------------------ Consumer Finance - 1.3% 99,390 American Express Co. 6,029,991 21,644 Capital One Financial Corp. 1,662,692 ------------ 7,692,683 - ------------------------------------------------------------------------------------------------------------------------------ Containers & Packaging - 0.1% 13,500 Pactiv Corp. (a) 481,815 - ------------------------------------------------------------------------------------------------------------------------------ Diversified Consumer 5,700 Apollo Group, Inc. Class A (a) 222,129 Services - 0.0% - ------------------------------------------------------------------------------------------------------------------------------ Diversified Financial 116,166 Bank of America Corp. (h) 6,202,103 Services - 4.9% 800 Chicago Mercantile Exchange Holdings, Inc. 407,800 261,513 Citigroup, Inc. 14,566,274 9 Master Enhanced S&P 500 Series Schedule of Investments as of December 31, 2006 Shares Industry Held Common Stocks Value - ------------------------------------------------------------------------------------------------------------------------------ 150,163 JPMorgan Chase & Co. $ 7,252,873 4,900 Moody's Corp. 338,394 ------------ 28,767,444 - ------------------------------------------------------------------------------------------------------------------------------ Diversified Telecommunication 110,935 AT&T Inc. 3,965,926 Services - 2.6% 107,223 BellSouth Corp. 5,051,276 6,152 Embarq Corp. 323,349 160,300 Qwest Communications International Inc. (a) 1,341,711 109,540 Verizon Communications, Inc. 4,079,270 33,300 Windstream Corp. 473,526 ------------ 15,235,058 - ------------------------------------------------------------------------------------------------------------------------------ Electric Utilities - 0.8% 6,800 Allegheny Energy, Inc. (a) 312,188 7,000 American Electric Power Co., Inc. 298,060 13,500 Edison International 613,980 21,124 Exelon Corp. 1,307,364 9,400 FPL Group, Inc. 511,548 55,000 PPL Corp. 1,971,200 ------------ 5,014,340 - ------------------------------------------------------------------------------------------------------------------------------ Electrical Equipment - 0.6% 59,500 American Power Conversion Corp. 1,820,105 3,700 Cooper Industries Ltd. Class A 334,591 24,300 Emerson Electric Co. 1,070,901 1,700 Rockwell Automation, Inc. 103,836 ------------ 3,329,433 - ------------------------------------------------------------------------------------------------------------------------------ Electronic Equipment & 27,200 Agilent Technologies, Inc. (a) 947,920 Instruments - 0.7% 7,600 Jabil Circuit, Inc. 186,580 5,800 Molex, Inc. 183,454 21,900 Sanmina-SCI Corp. (a) 75,555 37,700 Solectron Corp. (a) 121,394 162,143 Symbol Technologies, Inc. 2,422,416 ------------ 3,937,319 - ------------------------------------------------------------------------------------------------------------------------------ Energy Equipment & Services - 1.2% 96,100 BJ Services Co. 2,817,652 8,200 Baker Hughes, Inc. 612,212 53,300 Halliburton Co. (d) 1,654,965 2,700 Nabors Industries Ltd. (a) 80,406 3,600 Noble Corp. 274,140 23,700 Rowan Cos., Inc. 786,840 7,700 Transocean, Inc. (a) 622,853 ------------ 6,849,068 - ------------------------------------------------------------------------------------------------------------------------------ Food & Staples Retailing - 0.4% 19,300 Costco Wholesale Corp. 1,020,391 16,700 The Kroger Co. 385,269 13 SUPERVALU Inc. 465 9,800 Safeway, Inc. 338,688 16,005 Wal-Mart Stores, Inc. 739,111 ------------ 2,483,924 - ------------------------------------------------------------------------------------------------------------------------------ Food Products - 1.7% 88,300 Archer Daniels Midland Co. 2,822,068 38 Campbell Soup Co. 1,478 136,400 ConAgra Foods, Inc. 3,682,800 10,000 HJ Heinz Co. 450,100 84,100 McCormick & Co., Inc. 3,242,896 ------------ 10,199,342 - ------------------------------------------------------------------------------------------------------------------------------ Gas Utilities - 0.0% 5,000 Spectra Energy Corp. (a) 138,750 - ------------------------------------------------------------------------------------------------------------------------------ 10 Master Enhanced S&P 500 Series Schedule of Investments as of December 31, 2006 Shares Industry Held Common Stocks Value - ------------------------------------------------------------------------------------------------------------------------------ Health Care Equipment & 10,100 Becton Dickinson & Co. $ 708,515 Supplies - 0.8% 8,600 Biomet, Inc. 354,922 161,307 Boston Scientific Corp. (a) 2,771,254 20,500 Conor Medsystems, Inc. (a) 642,265 ------------ 4,476,956 - ------------------------------------------------------------------------------------------------------------------------------ Health Care Providers & 28,200 Aetna, Inc. 1,217,676 Services - 4.2% 64,300 AmerisourceBergen Corp. 2,890,928 61,355 Cardinal Health, Inc. 3,953,103 11,809 Caremark Rx, Inc. 674,412 22,900 Cigna Corp. 3,012,953 10,900 Horizon Health Corp. (a) 213,313 41,000 Humana, Inc. (a) 2,267,710 59,400 McKesson Corp. 3,011,580 16 Medco Health Solutions, Inc. (a) 855 12,795 Per-Se Technologies, Inc. (a) 355,445 108,713 UnitedHealth Group, Inc. 5,841,149 20,357 WellPoint, Inc. (a) 1,601,892 ------------ 25,041,016 - ------------------------------------------------------------------------------------------------------------------------------ Hotels, Restaurants & 19,930 Aztar Corp. (a) 1,084,591 Leisure - 2.0% 27 Carnival Corp. 1,324 5,100 Chipotle Mexican Grill, Inc. Class A (a) 290,700 3,300 Harrah's Entertainment, Inc. (h) 272,976 16,198 Hilton Hotels Corp. 565,310 6,800 International Game Technology 314,160 3,200 Las Vegas Sands Corp. (a) 286,336 27,100 Marriott International, Inc. Class A 1,293,212 48,482 McDonald's Corp. 2,149,207 98,400 Starbucks Corp. (a) 3,485,328 8,600 Starwood Hotels & Resorts Worldwide, Inc. 537,500 1,300 Tim Hortons, Inc. 37,648 6,544 Wendy's International, Inc. 216,541 19,000 Wyndham Worldwide Corp. (a) 608,380 3,100 Wynn Resorts Ltd. 290,935 4,400 Yum! Brands, Inc. 258,720 ------------ 11,692,868 - ------------------------------------------------------------------------------------------------------------------------------ Household Durables - 0.6% 21,500 Centex Corp. 1,209,805 11,100 DR Horton, Inc. 294,039 2,700 Harman International Industries, Inc. 269,757 7,500 Leggett & Platt, Inc. 179,250 5,699 Lennar Corp. Class A 298,970 1,600 Pulte Homes, Inc. 52,992 2,400 Snap-On, Inc. 114,336 34,400 Yankee Candle Co., Inc. 1,179,232 ------------ 3,598,381 - ------------------------------------------------------------------------------------------------------------------------------ Household Products - 1.7% 15,200 Colgate-Palmolive Co. 991,648 65,600 Kimberly-Clark Corp. 4,457,520 68,605 The Procter & Gamble Co. 4,409,243 ------------ 9,858,411 - ------------------------------------------------------------------------------------------------------------------------------ IT Services - 1.1% 14,700 Automatic Data Processing, Inc. 723,975 1,700 Computer Sciences Corp. (a) 90,729 5,700 Convergys Corp. (a) 135,546 11 Master Enhanced S&P 500 Series Schedule of Investments as of December 31, 2006 Shares Industry Held Common Stocks Value - ------------------------------------------------------------------------------------------------------------------------------ 23,500 Electronic Data Systems Corp. $ 647,425 14,700 Fidelity National Information Services, Inc. 589,323 32,155 First Data Corp. 820,596 52,629 Kanbay International, Inc. (a) 1,514,136 4,400 Paychex, Inc. 173,976 41,100 Sabre Holdings Corp. Class A 1,310,679 100 Unisys Corp. (a) 784 34,755 The Western Union Co. 779,207 ------------ 6,786,376 - ------------------------------------------------------------------------------------------------------------------------------ Independent Power Producers & 27,300 The AES Corp.(a)(h) 601,692 Energy Traders - 0.6% 1,700 Constellation Energy Group, Inc. 117,079 201 Dynegy, Inc. Class A (a) 1,455 57,500 TXU Corp. 3,117,075 ------------ 3,837,301 - ------------------------------------------------------------------------------------------------------------------------------ Industrial Conglomerates - 4.2% 69,700 3M Co. 5,431,721 415,400 General Electric Co. 15,457,034 1,100 Textron, Inc. 103,147 121,442 Tyco International Ltd. 3,691,837 ------------ 24,683,739 - ------------------------------------------------------------------------------------------------------------------------------ Insurance - 4.6% 38,500 ACE Ltd. 2,331,945 2,200 AON Corp. 77,748 63,700 The Allstate Corp. 4,147,507 101,675 American International Group, Inc. (h) 7,286,031 17,000 Chubb Corp. 899,470 21,500 Direct General Corp. 443,760 7,096 Genworth Financial, Inc. Class A 242,754 22,000 Hartford Financial Services Group, Inc. 2,052,820 5,865 Lincoln National Corp. 389,436 9,286 Loews Corp. 385,090 100 MBIA, Inc. 7,306 12,000 Marsh & McLennan Cos., Inc. 367,920 84,300 MetLife, Inc. (d) 4,974,543 4,300 Principal Financial Group, Inc. 252,410 15,300 Prudential Financial, Inc. 1,313,658 20,829 The St. Paul Travelers Cos., Inc. 1,118,309 14,100 UnumProvident Corp. 292,998 7,400 XL Capital Ltd. Class A 532,948 ------------ 27,116,653 - ------------------------------------------------------------------------------------------------------------------------------ Internet & Catalog Retail - 0.4% 62,200 IAC/InterActiveCorp (a) 2,311,352 - ------------------------------------------------------------------------------------------------------------------------------ Internet Software & Services - 1.3% 9,500 Digital Insight Corp. (a) 365,655 29,600 Digitas, Inc. (a) 396,936 41,005 eBay, Inc. (a) 1,233,020 9,138 Google, Inc. Class A (a) 4,207,866 10,100 VeriSign, Inc. (a) 242,905 42,232 Yahoo!, Inc. (a) 1,078,605 ------------ 7,524,987 - ------------------------------------------------------------------------------------------------------------------------------ Leisure Equipment & Products - 0.4% 90,700 Eastman Kodak Co. 2,340,060 600 Mattel, Inc. 13,596 ------------ 2,353,656 - ------------------------------------------------------------------------------------------------------------------------------ Life Sciences Tools & 21,900 Applera Corp. - Applied Biosystems Group 803,511 Services - 0.8% 16,300 PerkinElmer, Inc. 362,349 12 Master Enhanced S&P 500 Series Schedule of Investments as of December 31, 2006 Shares Industry Held Common Stocks Value - ------------------------------------------------------------------------------------------------------------------------------ 78,635 Thermo Electron Corp. (a) $ 3,561,379 4,200 Waters Corp. (a) 205,674 ------------ 4,932,913 - ------------------------------------------------------------------------------------------------------------------------------ Machinery - 1.8% 66,800 Caterpillar, Inc. 4,096,844 23,500 Danaher Corp. (d) 1,702,340 35,900 Deere & Co. 3,413,013 1,100 Eaton Corp. 82,654 17,200 Illinois Tool Works, Inc. 794,468 4,400 Ingersoll-Rand Co. Class A 172,172 5,050 PACCAR, Inc. 327,745 4,600 Terex Corp. (a) 297,068 ------------ 10,886,304 - ------------------------------------------------------------------------------------------------------------------------------ Media - 3.6% 13,300 Advo, Inc. 433,580 61,648 CBS Corp. Class B 1,922,185 11,700 Clear Channel Communications, Inc. 415,818 89,257 Comcast Corp. Class A (a)(d) 3,778,249 19,300 The DIRECTV Group, Inc. (a) 481,342 9,790 Gannett Co., Inc. 591,903 100 Interpublic Group of Cos., Inc. (a) 1,224 2,300 Liberty Media Holding Corp. - Capital (a) 225,354 5,100 Live Nation (a) 114,240 39,400 The McGraw-Hill Cos., Inc. 2,679,988 80,400 News Corp. Class A 1,726,992 19,600 News Corp. Class B 436,296 7,100 Omnicom Group 742,234 49,500 The Reader's Digest Association, Inc. Class A 826,650 179,825 Time Warner, Inc. 3,916,589 84,200 Univision Communications, Inc. Class A (a) 2,982,364 7 Walt Disney Co. 240 ------------ 21,275,248 - ------------------------------------------------------------------------------------------------------------------------------ Metals & Mining - 1.7% 119,500 Alcoa, Inc. 3,586,195 1,600 Allegheny Technologies, Inc. 145,088 41,700 Freeport-McMoRan Copper & Gold, Inc. Class B 2,323,941 8,500 Nucor Corp. 464,610 24,600 Oregon Steel Mills, Inc. (a) 1,535,286 13,300 Phelps Dodge Corp. 1,592,276 5,100 United States Steel Corp. 373,014 ------------ 10,020,410 - ------------------------------------------------------------------------------------------------------------------------------ Multi-Utilities - 2.5% 7,300 DTE Energy Co. 353,393 46,400 Dominion Resources, Inc. 3,890,176 147,524 Duke Energy Corp. (d) 4,899,272 1,800 KeySpan Corp. 74,124 11,215 NiSource, Inc. 270,282 21,600 NorthWestern Corp. 764,208 49,100 PG&E Corp. 2,323,903 4,400 Public Service Enterprise Group, Inc. 292,072 3,800 Sempra Energy 212,952 83,100 Xcel Energy, Inc. 1,916,286 ------------ 14,996,668 - ------------------------------------------------------------------------------------------------------------------------------ Multiline Retail - 1.3% 4,700 Big Lots, Inc. (a) 107,724 29,200 Dillard's, Inc. Class A 1,021,124 13 Master Enhanced S&P 500 Series Schedule of Investments as of December 31, 2006 Shares Industry Held Common Stocks Value - ------------------------------------------------------------------------------------------------------------------------------ 33,800 Dollar General Corp. $ 542,828 14,270 Federated Department Stores 544,115 41,500 JC Penney Co., Inc. 3,210,440 10,200 Nordstrom, Inc. 503,268 18,200 Saks, Inc. 324,324 28,500 Target Corp. 1,625,925 ------------ 7,879,748 - ------------------------------------------------------------------------------------------------------------------------------ Office Electronics - 0.1% 40,700 Xerox Corp. (a) 689,865 - ------------------------------------------------------------------------------------------------------------------------------ Oil, Gas & Consumable Fuels - 8.0% 18,800 Anadarko Petroleum Corp. (h) 818,176 13,600 Apache Corp. 904,536 7,800 Chesapeake Energy Corp. 226,590 84,702 Chevron Corp. 6,228,138 69,000 ConocoPhillips 4,964,550 900 Consol Energy, Inc. 28,917 47,890 Devon Energy Corp. 3,212,461 4,300 EOG Resources, Inc. 268,535 28,600 El Paso Corp. 437,008 279,490 Exxon Mobil Corp. 21,417,319 6,900 Forest Oil Corp. (a) 225,492 3,218 Giant Industries, Inc. (a) 241,189 12,775 Hess Corp. 633,257 1,000 Houston Exploration Co. (a) 51,780 11,200 Kinder Morgan, Inc. 1,184,400 11,236 Marathon Oil Corp. 1,039,330 10,100 Mariner Energy, Inc. (a) 197,960 1,800 Murphy Oil Corp. 91,530 27,504 Occidental Petroleum Corp. 1,343,020 5,800 Peabody Energy Corp. 234,378 1,000 Sunoco, Inc. 62,360 41,623 Valero Energy Corp. 2,129,433 24,600 Williams Cos., Inc. 642,552 17,500 XTO Energy, Inc. 823,375 ------------ 47,406,286 - ------------------------------------------------------------------------------------------------------------------------------ Paper & Forest Products - 0.1% 7,500 MeadWestvaco Corp. 225,450 4,200 Weyerhaeuser Co. 296,730 ------------ 522,180 - ------------------------------------------------------------------------------------------------------------------------------ Personal Products - 0.6% 11,100 Alberto-Culver Co. 238,095 7,500 Avon Products, Inc. 247,800 69,300 The Estee Lauder Cos., Inc. Class A 2,828,826 ------------ 3,314,721 - ------------------------------------------------------------------------------------------------------------------------------ Pharmaceuticals - 3.9% 21,100 Abbott Laboratories (h) 1,027,781 6 Allergan, Inc. 718 8,100 Forest Laboratories, Inc. (a) 409,860 64,309 Johnson & Johnson 4,245,680 10,002 Merck & Co., Inc. 436,087 115,900 Mylan Laboratories 2,313,364 415,040 Pfizer, Inc. 10,749,536 46,400 Schering-Plough Corp. 1,096,896 48,400 Wyeth 2,464,528 ------------ 22,744,450 - ------------------------------------------------------------------------------------------------------------------------------ 14 Master Enhanced S&P 500 Series Schedule of Investments as of December 31, 2006 Shares Industry Held Common Stocks Value - ------------------------------------------------------------------------------------------------------------------------------ Real Estate Investment Trusts 2,500 Archstone-Smith Trust $ 145,525 (REITs) - 0.8% 1,292 Boston Properties, Inc. 144,549 6,200 Equity Office Properties Trust 298,654 9,200 Government Properties Trust, Inc. 97,520 7,607 Host Marriott Corp. 186,752 9,401 Kimco Realty Corp. 422,575 74,819 MortgageIT Holdings, Inc. 1,103,580 10,000 ProLogis 607,700 1,004 Public Storage, Inc. 97,890 9,390 Simon Property Group, Inc. 951,113 22,300 Trustreet Properties, Inc. 375,755 2,100 Vornado Realty Trust 255,150 ------------ 4,686,763 - ------------------------------------------------------------------------------------------------------------------------------ Real Estate Management & 400 CB Richard Ellis Group, Inc. (a) 13,280 Development - 0.1% 20,649 Realogy Corp. (a) 626,078 ------------ 639,358 - ------------------------------------------------------------------------------------------------------------------------------ Road & Rail - 0.9% 9,600 Burlington Northern Santa Fe Corp. 708,576 18,100 CSX Corp. 623,183 18,400 Norfolk Southern Corp. 925,336 49,200 RailAmerica, Inc. (a) 791,136 22,100 Union Pacific Corp. 2,033,642 ------------ 5,081,873 - ------------------------------------------------------------------------------------------------------------------------------ Semiconductors & Semiconductor 13 Advanced Micro Devices, Inc. (a) 264 Equipment - 2.2% 14,800 Altera Corp. (a) 291,264 14,800 Analog Devices, Inc. 486,476 56,800 Applied Materials, Inc. 1,047,960 12,300 Broadcom Corp. Class A (a) 397,413 307,700 Intel Corp. 6,230,925 1,600 Kla-Tencor Corp. 79,600 16,400 LSI Logic Corp. (a) 147,600 3,500 Maxim Integrated Products, Inc. 107,170 30,100 Micron Technology, Inc. (a) 420,196 12,300 National Semiconductor Corp. 279,210 5,200 Novellus Systems, Inc. (a) 178,984 8,100 Nvidia Corp. (a) 299,781 10,800 Portalplayer, Inc. (a) 145,260 8,200 Teradyne, Inc. (a) 122,672 75,200 Texas Instruments, Inc. 2,165,760 17,342 Verigy Ltd. (a) 307,821 14,100 Xilinx, Inc. (d) 335,721 ------------ 13,044,077 - ------------------------------------------------------------------------------------------------------------------------------ Software - 2.7% 8,700 BMC Software, Inc. (a) 280,140 17,000 CA, Inc. 385,050 12,700 Electronic Arts, Inc. (a) 639,572 5,000 Intuit, Inc. (a) 152,550 452,490 Microsoft Corp. (d) 13,511,351 100 Novell, Inc. (a) 620 32,483 Open Solutions, Inc. (a) 1,222,660 3,698 Oracle Corp. (a) 63,384 ------------ 16,255,327 - ------------------------------------------------------------------------------------------------------------------------------ 15 Master Enhanced S&P 500 Series Schedule of Investments as of December 31, 2006 Shares Industry Held Common Stocks Value - ------------------------------------------------------------------------------------------------------------------------------ Specialty Retail - 1.5% 17 AutoNation, Inc. (a) $ 362 66,900 Bed Bath & Beyond, Inc. (a) 2,548,890 11,500 Best Buy Co., Inc. 565,685 34,900 Circuit City Stores, Inc. 662,402 22,000 The Gap, Inc. 429,000 75,800 Home Depot, Inc. 3,044,128 4,874 Limited Brands 141,054 4,800 Office Depot, Inc. (a) 183,216 3,100 OfficeMax, Inc. 153,915 5,600 RadioShack Corp. 93,968 11,100 Sally Beauty Co., Inc. (a) 86,580 4,600 The Sherwin-Williams Co. 292,468 17,300 Staples, Inc. 461,910 ------------ 8,663,578 - ------------------------------------------------------------------------------------------------------------------------------ Textiles, Apparel & Luxury 62,800 Coach, Inc. (a) 2,697,888 Goods - 1.1% 4,600 Jones Apparel Group, Inc. 153,778 26,200 Nike, Inc. Class B 2,594,586 12,300 VF Corp. 1,009,584 ------------ 6,455,836 - ------------------------------------------------------------------------------------------------------------------------------ Thrifts & Mortgage Finance - 1.9% 16,700 Countrywide Financial Corp. 708,915 70,700 Fannie Mae 4,198,873 22,620 Freddie Mac 1,535,898 109,155 Washington Mutual, Inc. 4,965,461 ------------ 11,409,147 - ------------------------------------------------------------------------------------------------------------------------------ Tobacco - 2.3% 125,833 Altria Group, Inc. 10,798,988 44,000 UST, Inc. 2,560,800 ------------ 13,359,788 - ------------------------------------------------------------------------------------------------------------------------------ Wireless Telecommunication 5,633 Alltel Corp. 340,683 Services - 0.1% 3,000 Sprint Nextel Corp. 56,670 ------------ 397,353 - ------------------------------------------------------------------------------------------------------------------------------ Total Common Stocks (Cost - $465,343,384) - 93.7% 554,181,145 - ------------------------------------------------------------------------------------------------------------------------------ Exchange-Traded Funds (f) - ------------------------------------------------------------------------------------------------------------------------------ 200 MidCap SPDR Trust Series 1 29,228 30,220 SPDR Trust Series 1 (d) 4,282,174 ------------ 4,311,402 - ------------------------------------------------------------------------------------------------------------------------------ Total Exchange-Traded Funds (Cost - $3,998,204) - 0.7% 4,311,402 - ------------------------------------------------------------------------------------------------------------------------------ Face Amount Fixed Income Securities - ------------------------------------------------------------------------------------------------------------------------------ Biotechnology - 0.1% $ 475,000 Genzyme Corp., 1.25% due 12/01/2023 (c) 494,000 - ------------------------------------------------------------------------------------------------------------------------------ Industrial Conglomerates - 0.1% 291,000 Tyco International Group SA, 3.125% due 1/15/2023 (c) 412,129 - ------------------------------------------------------------------------------------------------------------------------------ Total Fixed Income Securities (Cost - $926,616) - 0.2% 906,129 - ------------------------------------------------------------------------------------------------------------------------------ Beneficial Interest Short-Term Securities - ------------------------------------------------------------------------------------------------------------------------------ $ 30,589,577 BlackRock Liquidity Series, LLC Cash Sweep Series, 5.26% (b)(e) 30,589,577 19,648,700 BlackRock Liquidity Series, LLC Money Market Series, 5.29% (b)(e)(g) 19,648,700 - ------------------------------------------------------------------------------------------------------------------------------ Total Short-Term Securities (Cost - $50,238,277) - 8.5% 50,238,277 - ------------------------------------------------------------------------------------------------------------------------------ Total Investments (Cost - $520,506,481*) - 103.1% 609,636,953 Liabilities in Excess of Other Assets - (3.1%) (18,456,120) ------------ Net Assets - 100.0% $591,180,833 ============ 16 Master Enhanced S&P 500 Series Schedule of Investments as of December 31, 2006 * The cost and unrealized appreciation (depreciation) of investments, as of December 31, 2006, as computed for federal income tax purposes, were as follows: Aggregate cost $ 528,147,106 ============= Gross unrealized appreciation $ 84,921,701 Gross unrealized depreciation (3,431,854) ------------- Net unrealized appreciation $ 81,489,847 ============= (a) Non-income producing security. (b) Investments in companies considered to be an affiliate of the Series, for purposes of Section 2(a)(3) of the Investment Company Act of 1940, were as follows: ----------------------------------------------------------------------------------------------------------------------- Affiliate Purchase Sale Realized Interest/Dividend Cost Cost Gain Income ----------------------------------------------------------------------------------------------------------------------- BlackRock Liquidity Series, LLC Cash Sweep Series -- $ 801,965** -- $ 1,295,331 BlackRock Liquidity Series, LLC Money Market Series $ 333,600* -- -- $ 27,141 Merrill Lynch & Co., Inc. $ 182,496 $ 2,314,352 $ 817,341 $ 28,050 PNC Financial Services Group, Inc. $ 785,284 $ 902,268 $ 92,349 $ 23,444 ----------------------------------------------------------------------------------------------------------------------- * Represents net purchase cost. ** Represents net sale cost. (c) Convertible security. (d) Security, or a portion of security, is on loan. (e) Represents the current yield as of December 31, 2006. (f) Depositary receipts. (g) Security was purchased with the cash proceeds from securities loans. (h) All or portion of security held as collateral in connection with open financial futures contracts. o For Series compliance purposes, the Series' 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 Series management. This definition may not apply for purposes of this report, which may combine industry sub-classifications for reporting ease. Industries are shown as a percent of net assets. These industry classifications are unaudited. o Financial futures contracts purchased as of December 31, 2006 were as follows: -------------------------------------------------------------------------------------- Number of Expiration Face Unrealized Contracts Issue Date Value Appreciation -------------------------------------------------------------------------------------- 162 S&P 500 Index March 2007 $57,751,490 $ 98,710 -------------------------------------------------------------------------------------- See Notes to Financial Statements. 17 Master Enhanced S&P 500 Series STATEMENT OF ASSETS AND LIABILITIES As of December 31, 2006 =============================================================================================================================== Assets: Investments in unaffiliated securities, at value (including securities loaned of $19,029,444) (identified cost-$469,582,385) ...................... $ 558,502,644 Investments in affiliated securities, at value (identified cost-$50,924,096) 51,134,309 Cash ....................................................................... 325,294 Receivables: Securities sold ...................................................... $ 1,755,041 Dividends ............................................................ 772,925 Interest ............................................................. 4,625 Securities lending ................................................... 2,130 2,534,721 ------------- Prepaid expenses ........................................................... 5,403 ------------- Total assets ............................................................... 612,502,371 ------------- =============================================================================================================================== Liabilities: Collateral on securities loaned, at value .................................. 19,648,700 Payables: Securities purchased ................................................. 1,068,692 Withdrawals .......................................................... 334,234 Variation margin ..................................................... 218,875 Other affiliates ..................................................... 5,218 Investment adviser ................................................... 4,686 1,631,705 ------------- Accrued expenses ........................................................... 41,133 ------------- Total liabilities .......................................................... 21,321,538 ------------- =============================================================================================================================== Net Assets: Net assets ................................................................. $ 591,180,833 ============= =============================================================================================================================== Net Assets Investors' capital ......................................................... $ 501,951,651 Consist of: Unrealized appreciation-net ................................................ 89,229,182 ------------- Net assets ................................................................. $ 591,180,833 ============= =============================================================================================================================== See Notes to Financial Statements. 18 Master Enhanced S&P 500 Series STATEMENT OF OPERATIONS For the Year Ended December 31, 2006 ================================================================================================================================= Investment Dividends (including $51,494 from affiliates) Income: (net of $465 foreign withholding tax) .................................... $ 10,607,197 Interest (including $1,295,331 from affiliates) ............................ 1,321,307 Securities lending-net ..................................................... 27,141 ------------- Total income ............................................................... 11,955,645 ------------- ================================================================================================================================= Expenses: Accounting services ........................................................ $ 83,882 Professional fees .......................................................... 73,619 Custodian fees ............................................................. 63,786 Investment advisory fees ................................................... 54,644 Trustees' fees and expenses ................................................ 6,716 Printing and shareholder reports ........................................... 6,229 Pricing fees ............................................................... 638 Other ...................................................................... 15,387 ------------- Total expenses ............................................................. 304,901 ------------- Investment income-net ...................................................... 11,650,744 ------------- ================================================================================================================================= Realized & Realized gain (loss) on: Unrealized Gain Investments-net (including $909,690 from affiliates) .................... 36,884,850 (Loss)-Net Foreign currency transactions-net ....................................... (2,811) Financial futures contracts-net ......................................... 4,473,700 Options written-net ..................................................... 65,430 41,421,169 ------------- Change in unrealized appreciation/depreciation on: Investments-net ......................................................... 25,804,868 Financial futures contracts-net ......................................... 773,558 26,578,426 ------------- ------------- Total realized and unrealized gain-net ..................................... 67,999,595 ------------- Net Increase in Net Assets Resulting from Operations ....................... $ 79,650,339 ============= ================================================================================================================================= See Notes to Financial Statements. 19 Master Enhanced S&P 500 Series STATEMENTS OF CHANGES IN NET ASSETS For the Year Ended December 31, ------------------------------ Increase (Decrease) in Net Assets: 2006 2005 ================================================================================================================================ Operations: Investment income-net ...................................................... $ 11,650,744 $ 9,040,500 Realized gain-net .......................................................... 41,421,169 21,447,347 Change in unrealized appreciation/depreciation-net ......................... 26,578,426 559,865 ------------- ------------- Net increase in net assets resulting from operations ....................... 79,650,339 31,047,712 ------------- ------------- ================================================================================================================================ Capital Proceeds from contributions ................................................ 41,176,802 172,703,936 Transactions: Fair value of withdrawals .................................................. (42,346,836) (37,325,571) ------------- ------------- Net increase (decrease) in net assets derived from capital transactions .... (1,170,034) 135,378,365 ------------- ------------- ================================================================================================================================ Net Assets: Total increase in net assets ............................................... 78,480,305 166,426,077 Beginning of year .......................................................... 512,700,528 346,274,451 ------------- ------------- End of year ................................................................ $ 591,180,833 $ 512,700,528 ============= ============= ================================================================================================================================ See Notes to Financial Statements. 20 Master Enhanced S&P 500 Series FINANCIAL HIGHLIGHTS The following ratios have For the Year Ended December 31, been derived from information provided --------------------------------------------------------------- in the financial statements. 2006 2005 2004 2003 2002 ================================================================================================================================== Total Investment ............................................. 15.64% 5.66% 11.51% 27.63% (21.61%) Return: ======== ======== ======== ======== ======== ================================================================================================================================== Ratios to Expenses, net of reimbursement ............ .06% .06% .06% .09% .08% Average Net ======== ======== ======== ======== ======== Assets: Expenses .................................. .06% .06% .06% .09% .18% ======== ======== ======== ======== ======== Investment income-net ..................... 2.13% 1.79% 1.99% 1.70% 1.59% ======== ======== ======== ======== ======== ================================================================================================================================== Supplemental Net assets, end of year (in thousands) .... $591,181 $512,701 $346,274 $269,475 $159,592 Data: ======== ======== ======== ======== ======== Portfolio turnover ........................ 178.95% 177.41% 119.58% 78.62% 101.85% ======== ======== ======== ======== ======== ================================================================================================================================== See Notes to Financial Statements. 21 Master Enhanced S&P 500 Series NOTES TO FINANCIAL STATEMENTS 1. Significant Accounting Policies: Master Enhanced S&P 500 Series (the "Series"), a non-diversified investment company, is part of Quantitative Master Series Trust (the "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 Series, subject to certain limitations. The financial statements of the Series 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. The following is a summary of significant accounting policies followed by the Series. (a) Valuation of investments - Equity securities that are held by the Series that are traded on stock exchanges or the NASDAQ Global Market are valued at the last sale price or official close price on the exchange, 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 equity 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 traded in the over-the-counter ("OTC") market, NASDAQ Capital Market 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 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. Options written or purchased are valued at the last sale price in the case of exchange-traded options. Options traded in the OTC market are valued at the last asked price (options written) or the last bid price (options purchased). Swap agreements are valued based upon quoted fair valuations received daily by the Series from a pricing service or counterparty. Financial futures contracts and options thereon, which are traded on exchanges, are valued at their last sale price as of the close of such exchanges. Obligations with remaining maturities of 60 days or less are valued at amortized cost unless BlackRock Advisors, LLC (the "Manager"), an indirect, wholly owned subsidiary of BlackRock, Inc., believes that this method no longer produces fair valuations. Valuation of other short-term investment vehicles is generally based on the net asset value of the underlying investment vehicle or amortized cost. Repurchase agreements are valued at cost plus accrued interest. The Series employs pricing services to provide certain securities prices for the Series. Securities and assets for which market quotations are not readily available are valued at fair value as determined in good faith by or under the direction of the Board of Trustees of the Trust, including valuations furnished by the pricing services retained by the Trust, which may use a matrix system for valuations. The procedures of a pricing service and its valuations are reviewed by the officers of the Trust under the general supervision of the Board of Trustees of the Trust. Such valuations and procedures will be reviewed periodically by the Board of Trustees of the 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 Series are determined as of such times. Foreign currency exchange rates will generally be determined as of 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 Series' 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 will be valued at their fair value as determined in good 22 faith by the Trust's Board of Trustees or by the Manager using a pricing service and/or procedures approved by the Trust's Board of Trustees. (b) Derivative financial instruments - The Series may engage in various portfolio investment strategies to provide liquidity or as a proxy for a direct investment in securities underlying the Series' Index. Losses may arise due to changes in the value of the contract or if the counterparty does not perform under the contract. o Financial futures contracts - The Series may purchase or sell financial futures contracts and options on such financial futures contracts. Financial futures contracts are contracts for delayed delivery of securities at a specific future date and at a specific price or yield. Upon entering into a contract, the Series deposits and maintains as collateral such initial margin as required by the exchange on which the transaction is effected. Pursuant to the contract, the Series agrees to receive from or pay to the broker an amount of cash equal to the daily fluctuation in value of the contract. Such receipts or payments are known as variation margin and are recorded by the Series as unrealized gains or losses. When the contract is closed, the Series records a realized gain or loss equal to the difference between the value of the contract at the time it was opened and the value at the time it was closed. o Swaps - The Series may enter into swap agreements, which are OTC contracts in which the Series and a counterparty agree to make periodic net payments on a specified notional amount. The net payments can be made for a set period of time or may be triggered by a predetermined credit event. The net periodic payments may be based on a fixed or variable interest rate; the change in market value of a specified security, basket of securities, or index; or the return generated by a security. These periodic payments received or made by the Series are recorded in the accompanying Statement of Operations as realized gains or losses, respectively. Gains or losses are also realized upon termination of the swap agreements. Swaps are marked-to-market daily 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. o Options - The Series may purchase and write call and put options. When the Series writes an option, an amount equal to the premium received by the Series is reflected as an asset and an equivalent liability. The amount of the liability is subsequently marked-to-market to reflect the current market value of the option written. When a security is purchased or sold through an exercise of an option, the related premium paid (or received) is added to (or deducted from) the basis of the security acquired or deducted from (or added to) the proceeds of the security sold. When an option expires (or the Series enters into a closing transaction), the Series realizes a gain or loss on the option to the extent of the premiums received or paid (or loss or gain to the extent the cost of the closing transaction exceeds the premium paid or received). Written and purchased options are non-income producing investments. o Forward foreign exchange contracts - The Series may enter into forward foreign exchange contracts as a hedge against either specific transactions or portfolio positions. The contract is marked-to-market daily and the change in market value is recorded by the Series as an unrealized gain or loss. When the contract is closed, the Series records a realized gain or loss equal to the difference between the value at the time it was opened and the value at the time it was closed. o Foreign currency options and futures - The Series may also purchase or sell listed or OTC foreign currency options, foreign currency futures and related options on foreign currency futures as a short or long hedge against possible variations in foreign exchange rates. Such transactions may be effected with respect to hedges on non-U.S. dollar-denominated securities owned by the 23 Series, sold by the Series but not yet delivered, or committed or anticipated to be purchased by the Series. (c) Foreign currency transactions - Transactions denominated in foreign currencies are recorded at the exchange rate prevailing when recognized. Assets and liabilities denominated in foreign currencies are valued at the exchange rate at the end of the period. Foreign currency transactions are the result of settling (realized) or valuing (unrealized) assets or liabilities expressed in foreign currencies into U.S. dollars. Realized and unrealized gains or losses from investments include the effects of foreign exchange rates on investments. The Series invests in foreign securities, which may involve a number of risk factors and special considerations, not present with investments in securities of U.S. corporations. (d) Income taxes - The Series is classified as a partnership for federal income tax purposes. As such, each investor in the Series is treated as owner of its proportionate share of the net assets, income, expenses and realized and unrealized gains and losses of the Series. Therefore, no federal income tax provision is required. Under the applicable foreign tax law, a withholding tax may be imposed on interest, dividends and capital gains at various rates. It is intended that the Series' assets will be managed so an investor in the Series 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. (f) Securities lending - The Series 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 Series and any additional required collateral is delivered to the Series on the next business day. Where the Series receives securities as collateral for the loaned securities, it receives a fee from the borrower. The Series typically receives the income on the loaned securities, but does not receive the income on the collateral. Where the Series 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 Series 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 Series could experience delays and costs in gaining access to the collateral. The Series 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. (g) Recent accounting pronouncements - In July 2006, the Financial Accounting Standards Board ("FASB") issued Interpretation No. 48 ("FIN 48"), "Accounting for Uncertainty in Income Taxes - an interpretation of FASB Statement No. 109". FIN 48 prescribes the minimum recognition threshold a tax position must meet in connection with accounting for uncertainties in income tax positions taken or expected to be taken by an entity including mutual funds before being measured and recognized in the financial statements. Adoption of FIN 48 is required for the last net asset value calculation in the first required financial statement reporting period for fiscal years beginning after December 15, 2006. The impact on the Portfolio's financial statements, if any, is currently being assessed. In addition, in September 2006, Statement of Financial Accounting Standards No. 157, "Fair Value Measurements" ("FAS 157"), was issued and is effective for fiscal years beginning after November 15, 2007. FAS 157 defines fair value, establishes a framework for measuring fair value and expands disclosures about fair value 24 measurements. Management is currently evaluating the implications of FAS 157. At this time, its impact on the Portfolio's financial statements has not been determined. 2. Investment Advisory Agreement and Transactions with Affiliates: On September 29, 2006, BlackRock, Inc. and Merrill Lynch & Co., Inc. ("Merrill Lynch") combined Merrill Lynch's investment management business, Merrill Lynch Investment Managers, L.P. ("MLIM"), and its affiliates, including Fund Asset Management, L.P. ("FAM"), with BlackRock, Inc. to create a new independent company. Merrill Lynch has a 49.8% economic interest and a 45% voting interest in the combined company and The PNC Financial Services Group, Inc., has approximately a 34% economic and voting interest. The new company operates under the BlackRock name and is governed by a board of directors with a majority of independent members. On September 29, 2006, the shareholders of the investors of the Series approved a new Investment Advisory Agreement for the Trust with the Manager. BlackRock Advisors, Inc. was recently reorganized into a limited liability company and renamed BlackRock Advisors, LLC. The new Investment Advisory Agreement between the Trust and the Manager became effective on September 29, 2006. Prior to September 29, 2006, FAM was the Trust's Manager. The general partner of FAM is Princeton Services, Inc. ("PSI"), an indirect, wholly owned subsidiary of Merrill Lynch, which is the limited partner. The Manager is responsible for the management of the Series' portfolio and provides the necessary personnel, facilities, equipment and certain other services necessary to the operations of the Series. For such services, the Series pays a monthly fee at an annual rate of .01% of the average daily value of the Series' net assets. In addition, the Manager has entered into a Sub-Advisory Agreement with BlackRock Investment Management, LLC ("BIM"), an affiliate of the Manager, under which the Manager pays the Sub-Advisor for services it provides a monthly fee at an annual rate that is a percentage of the management fee paid by the Series to the Manager. The Trust, on behalf of the Series, has received an exemptive order from the Securities and Exchange Commission permitting the Series to lend its portfolio securities to Merrill Lynch, Pierce, Fenner & Smith Incorporated ("MLPF&S"), an affiliate of Manager, or its affiliates. As of December 31, 2006, the Series lent securities with a value of $4,258,864 to MLPF&S or its affiliates. Pursuant to that order, the Trust has retained BIM as the securities lending agent for a fee based on a share of the returns on investment of cash collateral. Prior to September 29, 2006, BIM was organized as Merrill Lynch Investment Managers, LLC ("MLIM, LLC"), an affiliate of FAM and MLIM, and MLIM, LLC was the securities lending agent. BIM, may, on behalf of the Fund, invest cash collateral received by the Fund for such loans, among other things, in a private investment company managed by the Manager or in registered money market funds advised by the Manager or its affiliates. For the year ended December 31, 2006, BIM received $11,689 in securities lending agent fees. In addition, MLPF&S received $6,610 in commissions on the execution of portfolio security transactions for the Series for the year ended December 31, 2006. For the year ended December 31, 2006, the Series reimbursed FAM and the Manager $8,945 and $2,613, respectively, for certain accounting services. Prior to September 29, 2006, certain officers and/or trustees of the Trust were officers and/or directors of MLIM, PSI, FAM, Merrill Lynch, and/or MLIM, LLC. Commencing September 29, 2006, certain officers and/or trustees of the Trust are officers and/or directors of BlackRock, Inc. or its affiliates. 25 3. Investments: Purchases and sales of investments, excluding short-term securities, for the year ended December 31, 2006 were $944,982,916 and $926,377,276, respectively. Transactions in options written for the year ended December 31, 2006 were as follows: =============================================================================== Number of Premiums Call Options Written Contracts Received =============================================================================== Outstanding call options written, beginning of year ........................ -- -- Options written ............................ 1,420 $ 122,206 Options expired ............................ (18) (1,242) Options exercised .......................... (211) (27,023) Options closed ............................. (1,191) (93,941) ------------------------ Outstanding call options written, end of year .............................. -- $ -- ======================== - ------------------------------------------------------------------------------- =============================================================================== Number of Premiums Put Options Written Contracts Received =============================================================================== Outstanding put options written, beginning of year ........................ -- -- Options written ............................ 1,494 $ 109,652 Options expired ............................ (15) (1,685) Options exercised .......................... (55) (4,255) Options closed ............................. (1,424) (103,712) ------------------------ Outstanding put options written, end of year .............................. -- $ -- ======================== - ------------------------------------------------------------------------------- 4. Short-Term Borrowings: The Trust, on behalf of the Series, along with certain other funds managed by the Manager and its affiliates (or FAM and its affiliates), is a party to a $500,000,000 credit agreement with a group of lenders. The Series may borrow under the credit agreement to Series shareholder redemptions and for other lawful purposes other than for leverage. The Series may borrow up to the maximum amount allowable under the Series' current prospectus and statement of additional information, subject to various other legal, regulatory or contractual limits. On November 22, 2006, the credit agreement was renewed for one year under substantially the same terms. The Series pays a commitment fee of ..06% per annum based on the Series' 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 Series' election, the federal funds rate plus .35% or a base rate as defined in the credit agreement. The Series did not borrow under the credit agreement during the year ended December 31, 2006. 26 REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM To the Investors and Board of Trustees of Quantitative Master Series Trust: We have audited the accompanying statement of assets and liabilities, including the schedule of investments, of Master Enhanced S&P 500 Series, one of the portfolios constituting the Quantitative Master Series Trust (the "Trust"), as of December 31, 2006, and the related statement of operations for the year then ended, the statements of changes in net assets for each of the two years in the period then ended, and the financial highlights for each of the five years in the period then ended. These financial statements and financial highlights are the responsibility of the Trust's management. Our responsibility is to express an opinion on these financial statements and financial highlights based on our audits. We conducted our audits in accordance with the standards of the Public Company Accounting Oversight Board (United States). Those standards require that we plan and perform the audit to obtain reasonable assurance about whether the financial statements and financial highlights are free of material misstatement. The Trust is not required to have, nor were we engaged to perform, an audit of its internal control over financial reporting. Our audits included consideration of internal control over financial reporting as a basis for designing audit procedures that are appropriate in the circumstances, but not for the purpose of expressing an opinion on the effectiveness of the Trust's internal control over financial reporting. Accordingly, we express no such opinion. An audit also includes examining, on a test basis, evidence supporting amounts and disclosures in the financial statements, assessing the accounting principles used and significant estimates made by management, as well as evaluating the overall financial statement presentation. Our procedures included confirmation of securities owned as of December 31, 2006, by correspondence with the custodian and brokers; where replies were not received from brokers, we performed other auditing procedures. We believe that our audits provide a reasonable basis for our opinion. In our opinion, the financial statements and financial highlights referred to above present fairly, in all material respects, the financial position of Master Enhanced S&P 500 Series of the Quantitative Master Series Trust as of December 31, 2006, the results of its operations for the year then ended, the changes in its net assets for each of the two years in the period then ended, and its financial highlights for each of the five years in the period then ended, in conformity with accounting principles generally accepted in the United States of America. Deloitte & Touche LLP Princeton, New Jersey February 26, 2007 27 QUANTITATIVE MASTER SERIES TRUST Master Enhanced S&P 500 Series BlackRock Investment Advisory Agreement - Matters Considered by the Board The following disclosure appeared in the June 30, 2006 Semi-Annual Report of the Series and is the discussion referred to in "New BlackRock Sub-Advisory Agreement - Matters Considered by the Board" below. The term "Investment Adviser"as used herein refers to Fund Asset Management, L.P. New BlackRock Investment Advisory Agreement - Matters Considered by the Board In connection with the Transaction between Merrill Lynch and BlackRock, the Trust's Board of Trustees considered a new investment advisory agreement (the "New Investment Advisory Agreement") between the Trust and BlackRock Advisors, Inc. ("BlackRock Advisors"). If the New Investment Advisory Agreement is approved by shareholders, it will become effective upon the closing of the Transaction, which is expected in the third quarter of 2006. The Board discussed the New Investment Advisory Agreement at telephonic and in-person meetings held during April and May 2006. The Board, including the independent trustees, approved the New Investment Advisory Agreement on May 8, 2006. To assist the Board in its consideration of the New Investment Advisory Agreement, BlackRock provided materials and information about BlackRock, including its financial condition and asset management capabilities and organization, and Merrill Lynch provided materials and information about the Transaction. The independent trustees, through their independent legal counsel, also requested and received additional information from Merrill Lynch and BlackRock in connection with their consideration of the New Investment Advisory Agreement. The additional information was provided in advance of the May 2006 meeting. In addition, the independent trustees consulted with their counsel and counsel for the Trust on numerous occasions, discussing, among other things, the legal standards and certain other considerations relevant to the trustees' deliberations. At the Board meetings, the trustees discussed with Merrill Lynch management and certain BlackRock representatives the Transaction, its strategic rationale and BlackRock's general plans and intentions regarding the Series and the Trust. At these Board meetings, representatives of Merrill Lynch and BlackRock made presentations to and responded to questions from the Board. The trustees also inquired about the plans for and anticipated roles and responsibilities of certain employees and officers of the Investment Adviser and certain affiliates being transferred to BlackRock in connection with the Transaction. The independent trustees of the Board also conferred separately and with their counsel about the Transaction and other matters related to the Transaction on a number of occasions, including in connection with the April and May 2006 meetings. After the presentations and after reviewing the written materials provided, the independent trustees met in executive sessions with their counsel to consider the New Investment Advisory Agreement. In connection with the Board's review of the New Investment Advisory Agreement, Merrill Lynch and/or BlackRock advised the trustees about a variety of matters. The advice included the following, among other matters: o that there is not expected to be any diminution in the nature, quality and extent of services provided to the Series and its shareholders by BlackRock Advisors, including compliance services; 28 o that operation of New BlackRock as an independent investment management firm will enhance its ability to attract and retain talented professionals; o that the Series should benefit from having access to BlackRock's state of the art technology and risk management analytic tools, including investment tools, provided under the BlackRock Solutions(R) brand name; o that BlackRock has no present intention to alter any applicable expense waivers or reimbursements currently in effect and, while it reserves the right to do so in the future, it would seek the approval of the Board before making any changes; o that in connection with the Transaction, Merrill Lynch and BlackRock have agreed to conduct, and use reasonable best efforts to cause their respective affiliates to conduct, their respective businesses in compliance with the conditions of Section 15(f) of the Investment Company Act of 1940 (the "1940 Act") in relation to any public funds advised by BlackRock or the Investment Adviser (or its affiliates), respectively; and o that Merrill Lynch and BlackRock would derive benefits from the Transaction and that, as a result, they have a different financial interest in the matters that were being considered than do Series shareholders. The trustees considered the information provided by Merrill Lynch and BlackRock above, and, among other factors, the following: o the potential benefits to Series shareholders from being part of a combined fund family with BlackRock-sponsored funds, including possible economies of scale and access to investment opportunities; o the reputation, financial strength and resources of BlackRock and its investment advisory subsidiaries and the anticipated financial strength and resources of New BlackRock; o the compliance policies and procedures of BlackRock Advisors; o the terms and conditions of the New Investment Advisory Agreement, including the fact that the schedule of the Series' total advisory fees will not increase by virtue of the New Investment Advisory Agreement, but will remain the same; o that in May and August 2005, the Board had performed a full annual review of the investment advisory agreement currently in effect for the Series (the "Current Investment Advisory Agreement") as required by the 1940 Act and has determined that the Investment Adviser has the capabilities, resources and personnel necessary to provide the advisory and administrative services currently provided to the Series; and that the advisory and/or management fees paid by the Series, taking into account any applicable agreed-upon fee waivers and breakpoints, represent reasonable compensation to the Investment Adviser in light of the services provided, the costs to the Investment Adviser of providing those services, economies of scale, the fees and other expenses paid by similar funds (including information provided by Lipper Inc. ["Lipper"], and such other matters as the trustees have considered relevant in the exercise of their reasonable judgment; and o that Merrill Lynch agreed to pay all expenses of the Series in connection with the Board's consideration of the New Investment Advisory Agreement and related agreements and all costs of shareholder approval of the New 29 Investment Advisory Agreement and as a result the Series would bear no costs in obtaining shareholder approval of the New Investment Advisory Agreement. Certain of these considerations are discussed in more detail below. In its review of the New Investment Advisory Agreement, the Board assessed the nature, scope and quality of the services to be provided to the Series by the personnel of BlackRock Advisors and its affiliates, including administrative services, shareholder services, oversight of fund accounting, marketing services and assistance in meeting legal and regulatory requirements. In its review of the New Investment Advisory Agreement, the Board also considered a range of information in connection with its oversight of the services to be provided by BlackRock Advisors and its affiliates. Among the matters considered were: (a) fees (in addition to management fees) to be paid to BlackRock Advisors and its affiliates by the Series; (b) operating expenses of the Series paid to third parties; (c) the resources devoted to and compliance reports relating to the investment objective, policies and restrictions of the Series, and its compliance with the Trust's Code of Ethics and BlackRock Advisors' compliance policies and procedures; and (d) the nature, cost and character of non-investment management services to be provided by BlackRock Advisors and its affiliates. In the period prior to the Board meetings to consider renewal of the Current Investment Advisory Agreement, the Board had requested and received materials specifically relating to the Current Investment Advisory Agreement. These materials included (a) information compiled by Lipper on the fees and expenses and the investment performance of the Series as compared to a comparable group of funds as classified by Lipper; (b) a discussion by the portfolio management team for the Series on investment strategies used by the Series during its most recent fiscal year; (c) information on the profitability to the Investment Adviser of the Current Investment Advisory Agreement and other payments received by the Investment Adviser and its affiliates from the Series and the Trust; and (d) information provided by the Investment Adviser concerning services related to the valuation and pricing of portfolio holdings of the Series, allocation of brokerage fees, portfolio turnover statistics, and direct and indirect benefits to the Investment Adviser and its affiliates from their relationship with the Series and the Trust. In their deliberations, the trustees considered information received in connection with their most recent continuation of the Current Investment Advisory Agreement, in addition to information provided by BlackRock and BlackRock Advisors in connection with their evaluation of the terms and conditions of the New Investment Advisory Agreement. The trustees did not identify any particular information that was all-important or controlling, and each trustee attributed different weights to the various factors. The trustees, including a majority of the independent trustees, concluded that the terms of the New Investment Advisory Agreement are appropriate, that the fees to be paid are reasonable in light of the services to be provided to the Series, and that the New Investment Advisory Agreement should be approved and recommended to Series shareholders. Nature, Quality and Extent of Services Provided. The 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 Series, as well as the nature, quality and extent of services expected to be provided by BlackRock Advisors. The Board focused primarily on the Investment Adviser's investment advisory services and the investment performance of the Series, but also considered certain areas in which both the Investment Adviser and the Series receive services as part of the Merrill Lynch complex. The Board compared the performance of the Series - both including and excluding the effects of fees and expenses - to the performance of a comparable group of funds, and the performance of a relevant index or combination of indexes. While the 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. In evaluating the nature, quality and extent of the services to be provided by BlackRock Advisors under the New Investment Advisory Agreement, the trustees considered, among other things, the expected impact of the Transaction on the 30 operations, facilities, organization and personnel of BlackRock Advisors and how it would affect the Series; the ability of BlackRock Advisors to perform its duties after the Transaction; and any anticipated changes to the current investment and other practices of the Series. The trustees were given information with respect to the potential benefits to the Series and its shareholders from having access to BlackRock's state of the art technology and risk management analytic tools, including the investment tools provided under the BlackRock Solutions brand name. The trustees were advised that, as a result of Merrill Lynch's equity interest in BlackRock after the Transaction, the Trust will continue to be subject to restrictions concerning certain transactions involving Merrill Lynch affiliates (for example, transactions with a Merrill Lynch broker-dealer acting as principal) absent revised or new regulatory relief. The trustees were advised that a revision of existing regulatory relief with respect to these restrictions was being sought from the Securities and Exchange Commission and were advised of the possibility of receipt of such revised regulatory relief. There can be no assurance that such relief will be obtained. Based on their review of the materials provided and the assurances they had received from the management of Merrill Lynch and of BlackRock, the trustees determined that the nature and quality of services to be provided to the Series under the New Investment Advisory Agreement were expected to be as good or better than that provided under the Current Investment Advisory Agreement. It was noted, however, that it is expected that there will be changes in personnel following the Transaction and the combination of the operations of the Investment Adviser and its affiliates with those of BlackRock. The trustees noted that if current portfolio managers or other personnel cease to be available, the Board would consider all available options, which could include seeking the investment advisory or other services of BlackRock affiliates. Accordingly, the trustees concluded that, overall, they were satisfied at the present time with assurances from BlackRock and BlackRock Advisors as to the expected nature, extent and quality of the services to be provided to the Series under the New Investment Advisory Agreement. Costs of Services Provided and Profitability. It was noted that, in conjunction with the recent review of the Current Investment Advisory Agreement, the trustees had received, among other things, a report from Lipper comparing the fees, expenses and performance of the Series to those of a peer group selected by Lipper, and information as to the fees charged by the Investment Adviser or its affiliates to other registered investment company clients for investment management services. The Board reviewed the contractual management fee rate and actual management fee rate of the Series as a percentage of total assets at common asset levels - the actual rate includes advisory fees and the effects of any fee waivers - compared to the other funds in its Lipper category. They also compared the total expenses of the Series to those of other comparable funds. The information showed that the Series had fees and expenses within the range of fees and expenses of comparable funds. The Board concluded that the management fee and fee rate and overall expense ratio of the Series are reasonable compared to those of other comparable funds. In evaluating the costs of the services to be provided by BlackRock Advisors under the New Investment Advisory Agreement, the trustees considered, among other things, whether advisory fees or other expenses would change as a result of the Transaction. Based on their review of the materials provided and the fact that the New Investment Advisory Agreement is substantially similar to the Current Investment Advisory Agreement in all material respects, including the rates of compensation, the trustees determined that the Transaction should not increase the total fees payable, including any fee waivers and expense reimbursements, for advisory and administrative services. The trustees noted that it was not possible to predict with certainty New BlackRock's future profitability from its relationship with the Series. The trustees discussed with BlackRock Advisors its general methodology to be used in determining New BlackRock's profitability with respect to its relationship with the Series and the Trust. The trustees noted that they expect to receive profitability information from New BlackRock on at least an annual basis and thus be 31 in a position to evaluate whether any adjustments in fees and/or fee breakpoints of the Series would be appropriate. Fees and Economies of Scale. The Board considered the extent to which economies of scale might be realized as the assets of the Series increase and whether there should be changes in the management fee rate or structure in order to enable the Series to participate in these economies of scale. The Board determined that changes were not currently necessary and that the Series appropriately participated in these economies of scale. In reviewing the Transaction, the trustees considered, among other things, whether advisory fees or other expenses would change as a result of the Transaction. Based on the fact that the New Investment Advisory Agreement is substantially similar to the Current Investment Advisory Agreement in all material respects, including the rate of compensation, the trustees determined that as a result of the Transaction, the total advisory fees of the Series would be no higher than the fees under the Current Investment Advisory Agreement. The trustees noted that in conjunction with their most recent deliberations concerning the Current Investment Advisory Agreement, the trustees had determined that the total fees for advisory and administrative services for the Series were reasonable in light of the services provided. It was noted that in conjunction with the recent review of the Current Investment Advisory Agreement, the trustees had received, among other things, a report from Lipper comparing the fees, expenses and performance of the Series to those of a peer group selected by Lipper, and information as to the fees charged by the Investment Adviser to other registered investment company clients for investment management services. The trustees concluded that, because the rates for advisory for the Series would be no higher than its current fee rates, the proposed management fee structure, including any fee waivers, was reasonable and that no additional changes were currently necessary. Fall-Out Benefits. In evaluating the fall-out benefits to be received by BlackRock Advisors under the New Investment Advisory Agreement, the trustees considered whether the Transaction would have an impact on the fall-out benefits received by the Investment Adviser by virtue of the Current Investment Advisory Agreement. Based on their review of the materials provided, including materials received in connection with their most recent approval or continuance of the Current Investment Advisory Agreement, and their discussions with management of the Investment Adviser and BlackRock, the trustees determined that those benefits could include increased ability for BlackRock to distribute shares of its funds and other investment products and to obtain research services using the Series' portfolio transaction brokerage commissions. The trustees noted that any benefits were difficult to quantify with certainty at this time, and indicated that they would continue to evaluate them going forward. Investment Performance. The trustees considered investment performance for the Series. The trustees compared the Series' performance -- both including and excluding the effects of fees and expenses -- to the performance of a comparable group of funds, and the performance of a relevant index or combination of indexes. The comparative information received from Lipper showed Series performance at various levels within the range of performance of comparable funds over different time periods. While the Board reviews performance data at least quarterly, consistent with the Investment Adviser's investment goals, the Board attaches more importance over relatively long periods of time, typically three to five years. The trustees believed the performance of the Series was satisfactory. Also, the trustees took into account the investment performance of funds currently advised by BlackRock Advisors. The Board considered comparative information from Lipper which showed that the performance of the funds advised by BlackRock Advisors was within the range of performance of comparable funds over different time periods. The Board noted BlackRock's considerable investment management experience and capabilities, but was unable to predict what effect, if any, consummation of the Transaction would have on the future performance of the Series. Conclusion. After the independent trustees of the Trust deliberated in executive session, the entire Board, including the independent trustees, approved the New Investment Advisory Agreement on behalf of the Series, concluding that the advisory fee rate was reasonable in relation to the services provided and that the 32 New Investment Advisory Agreement was in the best interests of the shareholders. In approving the New Investment Advisory Agreement, the Board noted that it anticipated reviewing the continuance of the agreement in advance of the expiration of the initial two-year period. Contingent BlackRock Sub-Advisory Agreement - Matters Considered by the Board At the telephonic and in-person meetings held during April and May 2006 at which the Board discussed and approved the New Investment Advisory Agreement, the Board of Trustees, including the independent trustees, also discussed and approved a contingent sub-advisory agreement (the "Contingent Sub-Advisory Agreement") between the Investment Adviser and BlackRock Advisors (the "BlackRock Sub-Adviser"). The Contingent Sub-Advisory Agreement is intended to ensure that the Series operates with efficient portfolio management services until the closing of the Transaction, in the event that the Board deems it necessary and in the best interests of a series and its shareholders that the BlackRock Sub-Adviser assist in managing the operations of the series during the interim period until the closing of the Transaction. If shareholders approve the Contingent Sub-Advisory Agreement, it will take effect only upon recommendation from the Investment Adviser and upon subsequent approval of the Board in the period up to the closing of the Transaction. The effectiveness of the Contingent Sub-Advisory Agreement, therefore, would be contingent on further Board approval after shareholders approve it. Pursuant to each Contingent Sub-Advisory Agreement, the BlackRock Sub-Adviser would receive a monthly fee from the Investment Adviser equal to 50% of the advisory fee received by the Adviser. The Investment Adviser would pay the BlackRock Sub-Adviser out of its own resources. There would be no increase in Series expenses as a result of the Contingent Sub-Advisory Agreement. In making its approval at the May in-person meeting, the Board considered the Contingent Sub-Advisory Agreement in conjunction with the New Investment Advisory Agreement and reviewed the same information and factors discussed above. The Board also considered in conjunction with the Contingent Sub-Advisory Agreement the necessity of ensuring that the Series operates with effective management services until the closing of the Transaction. In reviewing the sub-advisory fee rate provided in the Contingent Sub-Advisory Agreement, the Board took note of the fact that both the Investment Adviser and the BlackRock Sub-Adviser would have significant responsibilities under their respective advisory agreements. The Investment Adviser would remain responsible for oversight of the operations and administration of the Series and the BlackRock Sub-Adviser would provide advisory services to the Series under the Contingent Sub-Advisory Agreement. The Board also took into account the expected short duration of the term of any Contingent Sub-Advisory Agreement and the fact that total advisory fees paid by the Series would not increase as a result of the Contingent Sub-Advisory Agreement. Under all of the circumstances, the Board concluded that it was a reasonable allocation of fees for the BlackRock Sub-Adviser to receive 50% of the advisory fee paid by the Series to the Investment Adviser. After the independent trustees deliberated in executive session, the entire Board, including the independent trustees, approved the Contingent Sub-Advisory Agreement, concluding that the advisory fee was reasonable in relation to the services provided and that the Contingent Sub-Advisory Agreement was in the best interests of shareholders. New BlackRock Sub-Advisory Agreement - Matters Considered by the Board At an in-person meeting held on August 16-17, 2006, the Board of Trustees, including the independent trustees, discussed and approved the sub-advisory agreement with respect to the Series between BlackRock Advisors, LLC (previously organized as BlackRock Advisors, Inc.) ("BlackRock Advisors") and BlackRock Investment Management, LLC (the "Sub-Adviser") (the "BlackRock Sub-Advisory Agreement"). The BlackRock Sub-Advisory Agreement became effective on September 29, 2006, at the same time the New Investment Advisory Agreement with BlackRock Advisors (which had been approved by the Series' shareholders) became effective. Pursuant to the BlackRock Sub-Advisory Agreement, the Sub-Adviser receives a monthly fee from BlackRock Advisors at an annual rate equal to 74% of the advisory fee 33 received by BlackRock Advisors from the Series. BlackRock Advisors pays the Sub-Adviser out of its own resources, and there is no increase in Series expenses as a result of the BlackRock Sub-Advisory Agreement. In approving the BlackRock Sub-Advisory Agreement at the August in-person meeting, the Board reviewed its considerations in connection with its approval of the New Investment Advisory Agreement in May 2006. The Board relied on the same information and considered the same factors as those discussed above in connection with the approval of the New Investment Advisory Agreement, and came to the same conclusions. In reviewing the sub-advisory fee rate provided for in the BlackRock Sub-Advisory Agreement, the Board noted the fact that both BlackRock Advisors and the Sub-Adviser have significant responsibilities under their respective advisory agreements. Under the New Investment Advisory Agreement, BlackRock Advisors remains responsible for the overall management of the Series and for oversight of the Series' operations and administration. Under the BlackRock Sub-Advisory Agreement, the Sub-Adviser provides advisory services to the Series and is responsible for the day-to-day management of the Series' portfolio. The Board also took into account the fact that there is no increase in total advisory fees paid by the Series as a result of the BlackRock Sub-Advisory Agreement. Based on its considerations, the Board concluded that it was a reasonable allocation of fees for the Sub-Adviser to receive a fee at an annual rate equal to 74% of the advisory fee paid by the Series to BlackRock Advisors. After the independent trustees deliberated in executive session, the entire Board, including the independent trustees, approved the BlackRock Sub-Advisory Agreement, concluding that the sub-advisory fee was reasonable in relation to the services provided and that the BlackRock Sub-Advisory Agreement was in the best interests of the Series' shareholders. 34 Officers and Trustees Number of Funds and Portfolios in Fund Other Public Position(s) Length Complex Directorships Held with of Time Principal Occupation(s) During Past 5 Overseen by Held by Name Address & Age Trust Served Years Trustee Trustee =================================================================================================================================== Interested Trustees =================================================================================================================================== Robert C. P.O. Box 9011 President 2005 to Vice Chairman and Director of BlackRock, Inc., 122 Funds None Doll, Jr.* Princeton, NJ and present Global Chief 168 Portfolios Investment Officer 08543-9011 Trustee for Equities, Chairman of the BlackRock Retail Age: 52 Operating Committee, and member of the BlackRock Executive Committee since 2006; President of the Funds advised by Merrill Lynch Investment Managers, L.P. ("MLIM") and its affiliates ("MLIM/FAM-advised funds") from 2005 to 2006 and Chief Investment Officer thereof from 2001 to 2006; President of MLIM and Fund Asset Management, L.P. ("FAM") from 2001 to 2006; Co-Head (Americas Region) thereof from 2000 to 2001 and Senior Vice President from 1999 to 2001; President and Director of Princeton Services, Inc. ("Princeton Services") and President of Princeton Administrators, L.P. ("Princeton Administrators") from 2001 to 2006; Chief Investment Officer of Oppenheimer Funds, Inc. in 1999 and Executive Vice President thereof from 1991 to 1999. ------------------------------------------------------------------------------------------------------------------------ * Mr. Doll is a director, trustee or member of an advisory board of certain other investment companies for which BlackRock Advisors, LLC and its affiliates act as an investment adviser. Mr. Doll is an "interested person," as described in the Investment Company Act, of the Fund based on his positions with BlackRock, Inc. and its affiliates. Trustees serve until their resignation, removal or death, or until December 31 of the year in which they turn 72. As Trust President, Mr. Doll serves at the pleasure of the Board of Trustees. - ------------------------------------------------------------------------------------------------------------------------------------ =================================================================================================================================== Independent Trustees* =================================================================================================================================== Donald W. P.O. Box 9095 Trustee 2002 to General Partner of The Burton Partnership, 21 Funds Knology, Inc., Burton Princeton, NJ present Limited partnership (an investment partnership) 38 Portfolios (tele- 08543-9095 since 1979; Managing General Partner of The communications) Age: 62 South Atlantic Venture Funds since 1983; Member Symbion, Inc. of the Investment Advisory Council of the Florida (healthcare); State Board of Administration since 2001. Capital Southwest (financial) - ------------------------------------------------------------------------------------------------------------------------------------ John P.O. Box 9095 Trustee 2005 to President and Chief Executive Officer of 21 Funds Cabot Francis Princeton, NJ present Allmerica Financial Corporation (financial 38 Portfolios Corporation O'Brien 08543-9095 services holding company) from 1995 to 2002 and (chemicals), Age: 63 Director from 1995 to 2003; President of LKQ Corporation Allmerica Investment Management Co., Inc. (auto parts (investment adviser) from 1989 to 2002; Director manufacturing); from 1989 to 2002 and Chairman of the Board from TJX Companies, 1989 to 1990; President, Chief Executive Officer Inc. (retailer) and Director of First Allmerica Financial Life Insurance Company from 1989 to 2002 and Director of various other Allmerica Financial companies until 2002; Director from 1989 to 2006, Member of the Governance Nominating Committee from 2004 to 2006, Member of the Compensation Committee from 1989 to 2006 and Member of the Audit Committee from 1990 to 2004 of ABIOMED; Director, Member of the Governance and Nomination Committee and Member of the Audit Committee of Cabot Corporation since 1990; Director and Member of the Audit Committee and Compensation Committee of LKQ Corporation since 2003; Lead Director of TJX Companies, Inc. since 1996; Trustee of the Woods Hole Oceanographic Institute since 2003; Director, Ameresco, Inc since 2006; Director, Boston Lyric Opera since 2002. - ------------------------------------------------------------------------------------------------------------------------------------ 35 Officers and Trustees (continued) Number of Funds and Portfolios in Fund Other Public Position(s) Length Complex Directorships Held with of Time Principal Occupation(s) During Past 5 Overseen by Held by Name Address & Age Trust Served Years Trustee Trustee =================================================================================================================================== Independent Trustees (concluded) =================================================================================================================================== David H. P.O. Box 9095 Trustee 2003 to Director, Ruckleshaus Institute and Haub School 21 Funds None Walsh Princeton, NJ present of Natural Resources at the University of 38 Portfolios 08543-9095 Wyoming since 2006; Consultant with Putnam Age: 65 Investments from 1993 to 2003 and employed in various capacities therewith from 1973 to 1992; Director, Massachusetts Audubon Society from 1990 to 1997; Director, The National Audubon Society from 1998 to 2005; Director, The American Museum of Fly Fishing since 1997. - ------------------------------------------------------------------------------------------------------------------------------------ Fred G. P.O. Box 9095 Trustee 2000 to Managing Director of FGW Associates since 1997; 21 Funds Watson Weiss** Princeton, NJ present Vice President, Planning, Investment and 38 Portfolios Pharmaceuticals, 08543-9095 Development of Warner Lambert Co. from 1979 to Inc. Age: 65 1997; Director of the Michael J. Fox Foundation (pharmaceutical for Parkinson's Research since 2000; Director of company) BTG International, Plc (a global technology commercialization company) since 2001. - ------------------------------------------------------------------------------------------------------------------------------------ * Trustees serve until their resignation, removal or death, or until December 31 of the year in which they turn 72. ** Chairman of the Board of Trustees and the Audit Committee. =================================================================================================================================== Trust Officers =================================================================================================================================== Donald C. P.O. Box 9011 Vice 1997 to Managing Director of BlackRock since 2006; Burke Princeton, NJ President present Managing Director of Merrill Lynch Investment 08543-9011 and and 1999 Managers, L.P. and Fund Asset Management, L.P. Age: 46 Treasurer to in 2006; First Vice President of MLIM and FAM present from 1997 to 2005 and Treasurer thereof from 1999 to 2006; Vice President of MLIM and FAM from 1990 to 1997. - ------------------------------------------------------------------------------------------------------------------------------------ Debra L. P.O. Box 9011 Vice 2005 to Director of BlackRock, Inc. since 2006; Jelilian Princeton, NJ President present Director of MLIM from 1999 to 2006. 08543-9011 Age: 39 - ------------------------------------------------------------------------------------------------------------------------------------ Jeffrey L. P.O. Box 9011 Vice 2005 to Director of BlackRock, Inc. since 2006; Russo Princeton, NJ President present Director of MLIM from 2004 to 2006; Vice 08543-9011 President of MLIM from 1994 to 2004. Age: 39 - ------------------------------------------------------------------------------------------------------------------------------------ Jeffrey P.O Box 9011 Fund Chief 2004 to Managing Director of BlackRock, Inc. and Fund Hiller Princeton, NJ Compliance present Chief Compliance Officer since 2006; Chief 08534 Officer Compliance Officer of the MLIM/FAM-advised funds Age: 55 and First Vice President and Chief Compliance Officer of MLIM (Americas Region) from 2004 to 2006; Chief Compliance Officer of the IQ Funds since 2004; Global Director of Compliance at Morgan Stanley Investment Management from 2002 to 2004; Managing Director and Global Director of Compliance at Citigroup Asset Management from 2000 to 2002; Chief Compliance Officer at Soros Fund Management in 2000; Chief Compliance Officer at Prudential Financial from 1995 to 2000; Senior Counsel in the Securities and Exchange Commission's Division of Enforcement in Washington, D.C. from 1990 to 1995. - ------------------------------------------------------------------------------------------------------------------------------------ 36 Officers and Trustees (concluded) Position(s) Length Held with of Time Principal Occupation(s) During Past Name Address & Age Trust Served 5 Years =================================================================================================================================== Trust Officers (concluded) =================================================================================================================================== Alice A. P.O. Box 9011 Secretary 2004 to Director of BlackRock, Inc. since 2006; Director Pellegrino Princeton, NJ present (Legal Advisory) of MLIM from 2002 to 2006; Vice 08543-9011 President of MLIM from 1999 to 2002; Attorney Age: 46 associated with MLIM from 1997 to 2006; Secretary of MLIM, FAM, FAM Distributors, Inc. and Princeton Services from 2004 to 2006. - ------------------------------------------------------------------------------------------------------------------------------------ * Officers of the Trust serve at the pleasure of the Board of Trustees. Further information about the Trust's Officers and Trustees is available in the Trust's Statement of Additional Information, which can be obtained without charge by calling 1-800-441-7762. - ------------------------------------------------------------------------------------------------------------------------------------ Custodian JPMorgan Chase Bank 3 Chase MetroTech Center Brooklyn, NY 11245 Transfer Agent PFPC Inc. Wilmington, DE 19809 Availability of Quarterly Schedule of Investments The Series 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 Series' Forms N-Q are available on the SEC's Web site at http://www.sec.gov. The Series' 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. A description of the policies and procedures that the Series uses to determine how to vote proxies relating to portfolio securities is available (1) without charge, upon request, by calling toll-free 1-800-441-7762; (2) at www.blackrock.com; and (3) on the Securities and Exchange Commission's Web site at http://www.sec.gov. Information about how the Series voted proxies relating to securities held in the Series' portfolio during the most recent 12-month period ended December 31st is available (1) at www.blackrock.com; and (2) on the Securities and Exchange Commission's Web site at http://www.sec.gov. 37 Proxy Results During the six-month period ended December 31, 2006, Master Enhanced S&P 500 Series of Quantitative Master Series Trust's interest holders voted on the following proposals, which were approved at a special interest holders' meeting on September 15, 2006. A description of the proposals and number of units of interest voted are as follows: Units of Interest Units of Interest Units of Interest Voted For Voted Against Voted Abstain - ------------------------------------------------------------------------------------------------------------------------- - ------------------------------------------------------------------------------------------------------------------------- To approve a new investment advisory agreement with BlackRock Advisors, Inc. 549,454,553 0 0 - ------------------------------------------------------------------------------------------------------------------------- - ------------------------------------------------------------------------------------------------------------------------- To approve a contingent subadvisory agreement with BlackRock Advisors, Inc. 549,454,553 0 0 - ------------------------------------------------------------------------------------------------------------------------- 38 Item 2 - Code of Ethics - The registrant has adopted a code of ethics, as of the end of the period covered by this report, that applies to the registrant's principal executive officer, principal financial officer and principal accounting officer, or persons performing similar functions. A copy of the code of ethics is available without charge at www.blackrock.com. Item 3 - Audit Committee Financial Expert - The registrant's board of directors has determined that (i) the registrant has the following audit committee financial experts serving on its audit committee and (ii) each audit committee financial expert is independent: (1) Donald W. Burton, (2) Laurie Simon Hodrick (resigned as of May 1, 2006), (3) John F. O'Brien, (4) David H. Walsh and (5) Fred G. Weiss. The registrant's board of directors has determined that Laurie Simon Hodrick qualifies as a financial expert pursuant to Item 3(c)(4) of Form N-CSR. Ms. Hodrick has a thorough understanding of generally accepted accounting principals, financial statements, and internal controls and procedures for financial reporting. Ms. Hodrick earned a Ph.D. in economics and has taught courses in finance for over 15 years. Her M.B.A.-level course centers around the evaluation and analysis of firms' corporate financial statements. She has also taught in financial analysts' training programs. Ms. Hodrick has also worked with several prominent corporations in connection with the analysis of financial forecasts and projections and analysis of the financial statements of those companies, serving on the Financial Advisory Council of one of these major corporations. She has also served as the Treasurer and Finance Chair of a 501(c)(3) organization. Ms. Hodrick has published a number of articles in leading economic and financial journals and is the associate editor of two leading finance journals. Item 4 - Principal Accountant Fees and Services (a) Audit Fees - Fiscal Year Ending December 31, 2006 - $33,400 Fiscal Year Ending December 31, 2005 - $33,000 (b) Audit-Related Fees - Fiscal Year Ending December 31, 2006 - $0 Fiscal Year Ending December 31, 2005 - $0 (c) Tax Fees - Fiscal Year Ending December 31, 2006 - $9,200 Fiscal Year Ending December 31, 2005 - $8,700 The nature of the services include tax compliance, tax advice and tax planning. (d) All Other Fees - Fiscal Year Ending December 31, 2006 - $0 Fiscal Year Ending December 31, 2005 - $0 (e)(1) The registrant's audit committee (the "Committee") has adopted policies and procedures with regard to the pre-approval of services. Audit, audit-related and tax compliance services provided to the registrant on an annual basis require specific pre-approval by the Committee. The Committee also must approve other non-audit services provided to the registrant and those non-audit services provided to the registrant's affiliated service providers that relate directly to the operations and the financial reporting of the registrant. Certain of these non-audit services that the Committee believes are a) consistent with the SEC's auditor independence rules and b) routine and recurring services that will not impair the independence of the independent accountants may be approved by the Committee without consideration on a specific case-by-case basis ("general pre-approval"). However, such services will only be deemed pre-approved provided that any individual project does not exceed $5,000 attributable to the registrant or $50,000 for all of the registrants the Committee oversees. Any proposed services exceeding the pre-approved cost levels will require specific pre-approval by the Committee, as will any other services not subject to general pre-approval (e.g., unanticipated but permissible services). The Committee is informed of each service approved subject to general pre-approval at the next regularly scheduled in-person board meeting. (e)(2) 0% (f) Not Applicable (g) Fiscal Year Ending December 31, 2006 - $3,071,450 Fiscal Year Ending December 31, 2005 - $5,577,771 (h) The registrant's audit committee has considered and determined that the provision of non-audit services that were rendered to the registrant's investment adviser and any entity controlling, controlled by, or under common control with the investment adviser that provides ongoing services to the registrant that were not pre-approved pursuant to paragraph (c)(7)(ii) of Rule 2-01 of Regulation S-X is compatible with maintaining the principal accountant's independence. Regulation S-X Rule 2-01(c)(7)(ii) - $1,739,500, 0% Item 5 - Audit Committee of Listed Registrants - Not Applicable Item 6 - Schedule of Investments - Not Applicable Item 7 - Disclosure of Proxy Voting Policies and Procedures for Closed-End Management Investment Companies - Not Applicable Item 8 - Portfolio Managers of Closed-End Management Investment Companies - Not Applicable 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) - As of September 29, 2006, with the conclusion of the combination of Merrill Lynch's asset management business with BlackRock, the registrant was migrated to BlackRock's trading and compliance monitoring systems, and various personnel changes occurred. In conjunction with these business improvements, there were no changes in the registrants internal control over financial reporting (as defined in Rule 30a-3(d) under 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 affect, the registrant's internal control over financial reporting. Item 12 - Exhibits attached hereto 12(a)(1) - Code of Ethics - See Item 2 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. Master Enhanced S&P 500 Series of Quantitative Master Series Trust By: /s/ Robert C. Doll, Jr. -------------------------- Robert C. Doll, Jr., Chief Executive Officer of Master Enhanced S&P 500 Series of Quantitative Master Series Trust Date: February 20, 2007 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 Master Enhanced S&P 500 Series of Quantitative Master Series Trust Date: February 20, 2007 By: /s/ Donald C. Burke -------------------------- Donald C. Burke, Chief Financial Officer of Master Enhanced S&P 500 Series of Quantitative Master Series Trust Date: February 20, 2007