UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM N-Q QUARTERLY SCHEDULE OF PORTFOLIO HOLDINGS OF REGISTERED MANAGEMENT INVESTMENT COMPANY Investment Company Act file number 811-21286 Name of Fund: BlackRock Preferred Income Strategies Fund, Inc. Fund Address: P.O. Box 9011 Princeton, NJ 08543-9011 Name and address of agent for service: Robert C. Doll, Jr., Chief Executive Officer (principal executive officer), BlackRock Preferred Income Strategies Fund, Inc., 800 Scudders Mill Road, Plainsboro, NJ 08536. Mailing address: P.O. Box 9011, Princeton, NJ 08543-9011 Registrant's telephone number, including area code: (800) 882-0052 Date of fiscal year end: 10/31/2007 Date of reporting period: 05/01/2007 - 07/31/2007 Item 1 - Schedule of Investments BlackRock Preferred Income Strategies Fund, Inc. Schedule of Investments as of July 31, 2007 (Unaudited) (in U.S. dollars) Preferred Securities Face Industry Amount Capital Trusts Value ------------------------------------------------------------------------------------------------------------------------------- Capital Markets - 2.0% $ 3,495,000 Deutsche Bank Capital Funding Trust VII, 5.628% (a)(b)(c) $ 3,348,899 13,535,000 State Street Capital Trust IV, 6.355% due 6/01/2067 (b) 13,484,244 -------------- 16,833,143 ------------------------------------------------------------------------------------------------------------------------------- Commercial Banks - 18.6% 12,035,000 ABN AMRO North America Holding Preferred Capital Repackaging Trust I, 6.523% due 12/29/2049 (a)(b)(c) 12,595,602 2,811,000 Abbey National Capital Trust I, 8.963% due 12/29/2049 (b)(c) 3,520,817 18,350,000 BB&T Capital Trust IV, 6.82% due 6/12/2077 (b) 17,767,167 2,000,000 Bank One Capital III, 8.75% due 9/01/2030 2,484,638 5,825,000 Barclays Bank Plc, 5.926% due 9/29/2049 (a)(b)(c) 5,563,784 16,455,000 Chase Capital II Series B, 5.856% due 2/01/2027 (b) 15,609,756 3,875,000 Dresdner Funding Trust I, 8.151% due 6/30/2031 (a) 4,440,382 3,630,000 First Empire Capital Trust II, 8.277% due 6/01/2027 3,783,603 2,000,000 HSBC America Capital Trust I, 7.808% due 12/15/2026 (a) 2,080,526 15,835,000 HSBC Capital Funding LP/Jersey Channel Islands, 10.176% due 12/29/2049 (a)(b)(c)(g) 22,099,453 7,300,000 HSBC Finance Capital Trust IX, 5.911% due 11/30/2035 (b) 7,037,894 12,275,000 Hubco Capital Trust II Series B, 7.65% due 6/15/2028 (a) 12,766,000 3,850,000 Huntington Capital III, 6.65% due 5/15/2037 (b) 3,619,393 2,000,000 Lloyds TSB Bank Plc, 6.90% (c) 1,955,000 18,470,000 Nationsbank Capital Trust III, 5.906% due 1/15/2027 (b) 17,765,573 13,180,000 RBS Capital Trust B, 6.80% (c) 12,685,750 2,000,000 Republic New York Corp., 7.53% due 12/04/2026 2,076,522 3,930,000 Royal Bank of Scotland Group Plc, 7.648% due 8/31/2049 (b)(c) 4,334,271 4,175,000 SunTrust Preferred Capital I, 5.853% (b)(c) 4,104,217 -------------- 156,290,348 ------------------------------------------------------------------------------------------------------------------------------- Consumer Finance - 2.1% 13,670,000 Capital One Capital III, 7.686% due 8/15/2036 12,916,555 4,630,000 MBNA Capital A, 8.278% due 12/01/2026 4,821,793 -------------- 17,738,348 ------------------------------------------------------------------------------------------------------------------------------- Diversified Financial 15,000,000 AgFirst Farm Credit Bank, 8.393% due 12/15/2016 (b) 16,267,230 Services - 4.0% 9,000,000 Farm Credit Bank of Texas Series 1, 7.561% (b)(c) 9,768,060 8,375,000 JPM Chase Capital XXI, 6.558% due 5/15/2077 (b) 7,627,330 -------------- 33,662,620 ------------------------------------------------------------------------------------------------------------------------------- Electric Utilities - 0.6% 5,000,000 SWEPCO Capital I, 5.25% due 10/01/2043 (b) 4,967,315 ------------------------------------------------------------------------------------------------------------------------------- Insurance - 10.4% 12,175,000 AON Corp., 8.205% due 1/01/2027 12,755,151 9,225,000 AXA, 8.60% due 12/15/2030 (Surplus Notes) 10,938,636 11,300,000 Ace Capital Trust II, 9.70% due 4/01/2030 14,168,516 15,000,000 Farmers Exchange Capital, 7.05% due 7/15/2028 (a) 14,021,880 10,000,000 GE Global Insurance Holding Corp., 7.75% due 6/15/2030 11,534,040 1,000,000 GenAmerica Capital I, 8.525% due 6/30/2027 (a) 1,042,630 3,000,000 Genworth Financial, Inc., 6.15% due 11/15/2066 (b) 2,737,062 6,066,000 ING Capital Funding Trust III, 8.439% (b)(c) 6,578,292 3,605,000 Oil Casualty Insurance Ltd., 8% due 9/15/2034 (a) 3,520,380 6,325,000 Principal Life Insurance Co., 8% due 3/01/2044 (Surplus Notes) 6,590,365 3,750,000 Zenith National Insurance Capital Trust I, 8.55% due 8/01/2028 (a) 3,656,250 -------------- 87,543,202 ------------------------------------------------------------------------------------------------------------------------------- Multi-Utilities - 1.2% 10,000,000 Dominion Resources Capital Trust I, 7.83% due 12/01/2027 10,303,550 ------------------------------------------------------------------------------------------------------------------------------- Road & Rail - 0.4% 3,750,000 BNSF Funding Trust I, 6.613% due 12/15/2055 (b) 3,282,892 ------------------------------------------------------------------------------------------------------------------------------- BlackRock Preferred Income Strategies Fund, Inc. Schedule of Investments as of July 31, 2007 (Unaudited) (in U.S. dollars) Preferred Securities Face Industry Amount Capital Trusts Value ------------------------------------------------------------------------------------------------------------------------------- Thrifts & Mortgage $ 1,000,000 Astoria Capital Trust I, 9.75% due 11/01/2029 (a) $ 1,102,500 Finance - 0.6% 3,875,000 Webster Capital Trust IV, 7.65% due 6/15/2037 (b) 3,828,682 -------------- 4,931,182 ------------------------------------------------------------------------------------------------------------------------------- Total Investments in Capital Trusts (Cost - $341,842,550) - 39.9% 335,552,600 ------------------------------------------------------------------------------------------------------------------------------- Shares Held Preferred Stocks ------------------------------------------------------------------------------------------------------------------------------- Capital Markets - 2.1% 7,600,000 Ameriprise Financial, Inc., 7.518% due 6/01/2066 (b) 7,693,480 393,800 Deutsche Bank Contingent Capital Trust II, 6.55% 9,608,720 -------------- 17,302,200 ------------------------------------------------------------------------------------------------------------------------------- Commercial Banks - 11.5% 4,000,000 Barclays Bank Plc, 6.278% (b) 3,747,892 4,650 First Tennessee Bank NA, 3.90% (a)(b) 4,865,063 8,000,000 ICICI Bank Ltd., 7.25% (a)(b) 7,784,088 159,000 KeyCorp Capital IX, 6.75% 3,812,820 166,800 Provident Financial Group, Inc., 7.75% 4,295,100 20,000,000 Resona Preferred Global Securities Ltd., 7.191% due 12/29/2049 (a)(b) 20,194,201 4,800,000 Royal Bank of Scotland Group Plc, 9.118% 5,217,029 23,000 SG Preferred Capital II, 6.302% (b) 23,948,750 599,000 Santander Finance Preferred SA Unipersonal, 6.50% (a) 14,993,749 250,000 Santander Finance Preferred SA Unipersonal, 6.80% (a) 6,328,125 48,000 Sovereign Bancorp, Inc. Series C, 7.30% (d) 1,300,800 -------------- 96,487,616 ------------------------------------------------------------------------------------------------------------------------------- Diversified Financial 152,000 Cobank ACB, 7% (a) 7,721,296 Services - 2.7% 15,525,000 JPMorgan Chase Capital XXI Series U, 6.309% (b) 15,331,760 -------------- 23,053,056 ------------------------------------------------------------------------------------------------------------------------------- Electric Utilities - 1.3% 14,000 Alabama Power Co., 5.83% 336,000 114,400 Entergy Arkansas, Inc., 6.45% 2,902,900 49,850 Entergy Louisiana LLC, 6.95% 5,018,100 80,000 Interstate Power & Light Co. Series B, 8.375% 2,508,000 -------------- 10,765,000 ------------------------------------------------------------------------------------------------------------------------------- Insurance - 15.0% 400,000 ACE Ltd. Series C, 7.80% 10,184,000 25,825,000 AXA SA, 6.379% (a)(b) 22,068,909 165,000 Aspen Insurance Holdings Ltd., 7.401% (b) 3,882,665 140,000 Axis Capital Holdings Ltd., Series A, 7.25% 3,500,000 36,000 Axis Capital Holdings Ltd., Series B, 7.50% (b) 3,772,127 139,200 Endurance Specialty Holdings Ltd. Series A, 7.75% 3,621,984 6,930,000 Financial Security Assurance Holdings Ltd., 6.40% (a)(b) 6,084,263 7,500,000 Great West Life & Annuity Insurance Co., 7.153% (a)(b)(g) 7,585,950 15,875,000 MetLife, Inc., 6.40% 14,196,282 493,000 MetLife, Inc., Series B, 6.50% 12,315,140 5,000,000 Oil Insurance Ltd., 7.558% (a)(b) 5,155,300 5,700,000 PartnerRe Finance II, 6.44% (b) 5,236,704 140,000 Prudential Plc, 6.50% (c) 3,424,400 660,000 RenaissanceRe Holding Ltd. Series D, 6.60% (c) 15,140,400 9,800 Zurich RegCaPS Funding Trust, 6.58% (a)(b)(c) 10,063,375 -------------- 126,231,499 ------------------------------------------------------------------------------------------------------------------------------- Multi-Utilities - 1.4% 8,400,000 Dominion Resources, Inc., 7.50% (b) 8,632,722 140,000 Pacific Gas & Electric Co. Series A, 6% (c) 3,444,000 -------------- 12,076,722 ------------------------------------------------------------------------------------------------------------------------------- BlackRock Preferred Income Strategies Fund, Inc. Schedule of Investments as of July 31, 2007 (Unaudited) (in U.S. dollars) Preferred Securities Shares Industry Held Preferred Stocks Value ------------------------------------------------------------------------------------------------------------------------------- Oil, Gas & Consumable 4,225,000 Enterprise Products Operating LP, 8.375% (b) $ 4,310,582 Fuels - 0.5% ------------------------------------------------------------------------------------------------------------------------------- Real Estate Management & 4,000,000 Roslyn Real Estate Asset Corp. Series D, 9% (b)(c) 3,976,216 Development - 0.5% ------------------------------------------------------------------------------------------------------------------------------- Thrifts & Mortgage Finance - 9.5% 264,650 Fannie Mae Series L, 5.125% (c) 11,419,648 1,210,000 Fannie Mae Series O, 7% (b)(c) 62,693,125 120,000 Freddie Mac Series Q, 3.85% (b)(c) 5,521,200 -------------- 79,633,973 ------------------------------------------------------------------------------------------------------------------------------- Wireless Telecommunication 2,423 Centaur Funding Corp., 9.08% (a) 2,784,178 Services - 0.3% ------------------------------------------------------------------------------------------------------------------------------- Total Preferred Stocks (Cost - $382,719,875) - 44.8% 376,621,042 ------------------------------------------------------------------------------------------------------------------------------- Real Estate Investment Trusts ------------------------------------------------------------------------------------------------------------------------------- Real Estate Investment Trusts 251,400 Alexandria Real Estate Equities, Inc. Series C, 8.375% 6,398,130 (REITs) - 7.3% 200,000 CBL & Associates Properties, Inc. Series C, 7.75% 4,940,000 400,000 Developers Diversified Realty Corp., 8% 10,084,000 2,390 First Industrial Realty Trust, Inc., 6.236% (b) 2,405,684 4,000 Firstar Realty LLC, 8.875% (a) 5,123,750 50,000 Health Care Property Investors, Inc. Series F, 7.10% 1,207,500 172,800 Health Care REIT, Inc. Series F, 7.625% 4,271,409 50,000 Kimco Realty Corp. Series F, 6.65% 1,193,500 40,000 PS Business Parks, Inc. Series K, 7.95% 1,004,000 160,000 Public Storage, Inc. Series I, 7.25% 3,960,000 607,550 Regency Centers Corp. Series C, 7.45% 15,079,391 3,857 Sovereign Real Estate Investment Corp., 12% (a) 5,650,505 ------------------------------------------------------------------------------------------------------------------------------- Total Real Estate Investment Trusts (Cost - $61,348,035) - 7.3% 61,317,869 ------------------------------------------------------------------------------------------------------------------------------- Face Amount Trust Preferreds ------------------------------------------------------------------------------------------------------------------------------- Commercial Banks - 1.7% $ 2,790,000 National City Capital Trust II, 6.625% due 11/15/2066 2,567,799 2,000,000 SunTrust Capital VIII, 6.10% due 12/15/2036 (b) 1,764,244 2,500,000 Wachovia Capital Trust IV, 6.375% due 3/01/2067 2,305,367 8,470,000 Wachovia Capital Trust IX, 6.375% due 6/01/2067 7,833,056 -------------- 14,470,466 ------------------------------------------------------------------------------------------------------------------------------- Communications Equipment - 0.2% 2,000,000 Corporate-Backed Trust Certificates, 8.375% due 11/15/2028 2,000,181 ------------------------------------------------------------------------------------------------------------------------------- Consumer Finance - 2.0% 16,702,000 Capital One Capital II, 7.50% due 6/15/2066 16,555,022 ------------------------------------------------------------------------------------------------------------------------------- Diversified Financial 7,625,000 Citigroup Capital XVII, 6.35% due 3/15/2067 6,944,003 Services - 0.8% ------------------------------------------------------------------------------------------------------------------------------- Electric Utilities - 1.2% 1,250,000 Georgia Power Co. Series O, 1.475% due 4/15/2033 1,139,094 1,250,000 HECO Capital Trust III, 6.50% due 3/18/2034 1,220,020 1,250,000 National Rural Utilities Cooperative Finance Corp., 6.75% due 2/15/2043 1,131,578 5,835,000 PPL Energy Supply LLC, 7% due 7/15/2046 5,851,338 950,000 Virginia Power Capital Trust II, 1.844% due 7/30/2042 947,701 -------------- 10,289,731 ------------------------------------------------------------------------------------------------------------------------------- Gas Utilities - 0.7% 5,750,000 Southwest Gas Capital II, 7.70% due 9/15/2043 5,874,418 ------------------------------------------------------------------------------------------------------------------------------- Insurance - 2.6% 11,000,000 ABN AMRO North America Capital Funding Trust II, 5.415% (a)(b)(c) 10,024,266 7,375,000 Berkley W. R. Capital Trust, 6.75% due 7/26/2045 6,999,304 5,000,000 Lincoln National Capital VI Series F, 6.75% due 9/11/2052 4,888,818 -------------- 21,912,388 ------------------------------------------------------------------------------------------------------------------------------- BlackRock Preferred Income Strategies Fund, Inc. Schedule of Investments as of July 31, 2007 (Unaudited) (in U.S. dollars) Preferred Securities Face Industry Amount Trust Preferreds Value ------------------------------------------------------------------------------------------------------------------------------- Media - 2.6% $ 23,375,000 Comcast Corp., 6.625% due 5/15/2056 $ 21,722,921 ------------------------------------------------------------------------------------------------------------------------------- Multi-Utilities - 0.1% 397,425 PSEG Funding Trust II, 8.75% due 12/31/2032 399,004 ------------------------------------------------------------------------------------------------------------------------------- Thrifts & Mortgage 11,137,500 Countrywide Financial Corp., 1.50% due 4/01/2033 8,901,738 Finance - 1.7% 6,000,000 Dime Community Capital I, 7% due 4/14/2034 5,640,000 -------------- 14,541,738 ------------------------------------------------------------------------------------------------------------------------------- Total Trust Preferreds (Cost - $122,004,029) - 13.6% 114,709,872 ------------------------------------------------------------------------------------------------------------------------------- Total Preferred Securities (Cost - $907,914,489) - 105.6% 888,201,383 ------------------------------------------------------------------------------------------------------------------------------- Corporate Bonds ------------------------------------------------------------------------------------------------------------------------------- Automobiles - 2.4% 16,000,000 DaimlerChrysler NA Holding Corp., 8.50% due 1/18/2031 19,801,856 ------------------------------------------------------------------------------------------------------------------------------- Capital Markets - 1.6% 7,750,000 Credit Suisse Guernsey Ltd., 5.86% (b)(c) 7,301,841 6,400,000 Lehman Brothers Holdings Capital Trust V, 6.19% (b)(c) 6,180,160 -------------- 13,482,001 ------------------------------------------------------------------------------------------------------------------------------- Commercial Banks - 12.3% 23,425,000 BNP Paribas, 7.195% (a)(b)(c) 22,372,163 8,575,000 BOI Capital Funding No. 3, 6.107% (a)(b)(c) 7,697,263 30,000,000 Credit Agricole SA, 6.637% (a)(b)(c) 28,077,510 5,000,000 HBOS Plc, 6.657% (a)(b)(c) 4,540,750 21,250,000 Societe Generale, 5.922% (a)(b)(c) 20,416,299 13,550,000 Standard Chartered Bank, 7.014% (a)(b)(c) 12,211,937 8,500,000 Woori Bank, 6.208% due 5/02/2067 (a)(b) 7,989,762 -------------- 103,305,684 ------------------------------------------------------------------------------------------------------------------------------- Diversified Telecommunication 25,500,000 France Telecom SA, 8.50% due 3/01/2031 31,948,440 Services - 3.8% ------------------------------------------------------------------------------------------------------------------------------- Electric Utilities - 3.9% 16,575,000 Duke Energy Field Services LLC, 8.125% due 8/16/2030 19,488,703 5,925,000 PPL Capital Funding, 6.70% due 3/30/2067 (b) 5,556,231 7,825,000 Virginia Electric and Power Co. Series A, 6% due 5/15/2037 7,483,947 -------------- 32,528,881 ------------------------------------------------------------------------------------------------------------------------------- Gas Utilities - 1.7% 14,400,000 Southern Union Co., 7.20% due 11/01/2066 (b) 14,474,779 ------------------------------------------------------------------------------------------------------------------------------- Insurance - 19.4% 12,775,000 The Allstate Corp., 6.50% due 5/15/2057 (b) 11,790,405 10,450,000 The Allstate Corp. Series B, 6.125% due 5/15/2037 (b) 9,897,832 12,395,000 American International Group, Inc., 6.25% due 3/15/2087 11,417,753 17,700,000 Chubb Corp., 6.375% due 3/29/2067 (b) 17,044,215 14,280,000 Everest Reinsurance Holdings, Inc., 6.60% due 5/01/2067 (b) 13,234,189 10,150,000 Liberty Mutual Group, Inc., 7% due 3/15/2037 (a)(b) 9,210,496 5,025,000 Lincoln National Corp., 6.05% due 4/20/2067 (b) 4,700,671 15,475,000 Nationwide Life Global Funding I, 6.75% due 5/15/2037 13,481,774 11,650,000 The Progressive Corp., 6.70% due 6/15/2037 (b) 11,167,806 6,575,000 QBE Capital Funding II LP, 6.797% (a)(b)(c) 6,139,209 3,000,000 Reinsurance Group of America, 6.75% due 12/15/2065 (b) 2,916,996 630,732 START 2004-1, 5.417% due 4/21/2011 630,338 8,875,000 Swiss Re Capital I LP, 6.854% (a)(b)(c) 8,834,175 22,850,000 The Travelers Cos., Inc., 6.25% due 3/15/2067 (b) 21,474,384 5,725,000 XL Capital Ltd. Series E, 6.50% (b)(c) 5,108,990 17,110,000 ZFS Finance USA Trust I, 6.50% due 5/09/2037 (a)(b) 16,022,882 -------------- 163,072,115 ------------------------------------------------------------------------------------------------------------------------------- Media - 0.8% 1,000,000 Time Warner, Inc., 7.625% due 4/15/2031 (g) 1,067,297 5,000,000 Time Warner, Inc., 7.70% due 5/01/2032 5,385,780 -------------- 6,453,077 ------------------------------------------------------------------------------------------------------------------------------- Multi-Utilities - 0.2% 1,825,000 Puget Sound Energy, Inc. Series A, 6.974% due 6/01/2067 (b) 1,837,465 ------------------------------------------------------------------------------------------------------------------------------- BlackRock Preferred Income Strategies Fund, Inc. Schedule of Investments as of July 31, 2007 (Unaudited) (in U.S. dollars) Preferred Securities Face Industry Amount Corporate Bonds Value ------------------------------------------------------------------------------------------------------------------------------- Oil, Gas & Consumable $ 8,300,000 TransCanada PipeLines Ltd., 6.35% due 5/15/2067 (b) $ 7,768,601 Fuels - 0.9% ------------------------------------------------------------------------------------------------------------------------------- Thrifts & Mortgage 11,150,000 Northern Rock Plc, 6.594% due 6/29/2049 (a)(b)(c) 10,888,421 Finance - 1.3% ------------------------------------------------------------------------------------------------------------------------------- Wireless Telecommunication 8,400,000 AT&T Wireless Services, Inc., 8.75% due 3/01/2031 10,395,647 Services - 2.9% 12,795,000 Sprint Capital Corp., 8.75% due 3/15/2032 14,060,515 -------------- 24,456,162 ------------------------------------------------------------------------------------------------------------------------------- Total Corporate Bonds 430,017,482 (Cost - $446,918,570) - 51.2% ------------------------------------------------------------------------------------------------------------------------------- Beneficial Interest Short-Term Securities ------------------------------------------------------------------------------------------------------------------------------- $ 66,669,936 BlackRock Liquidity Series, LLC 66,669,936 Cash Sweep Series, 5.33% (e)(f) ------------------------------------------------------------------------------------------------------------------------------- Total Short-Term Securities 66,669,936 (Cost - $66,669,936) - 7.9% ------------------------------------------------------------------------------------------------------------------------------- Total Investments (Cost - $1,421,502,995*) - 164.7% 1,384,888,801 Other Assets Less Liabilities - 0.8% 6,548,714 Preferred Stock, at Redemption Value - (65.5%) (550,817,847) -------------- Net Assets Applicable to Common Stock - 100.0% $ 840,619,668 ============== * The cost and unrealized appreciation (depreciation) of investments as July 31, 2007, as computed for federal income tax purposes, were as follows: Aggregate cost $ 1,419,757,306 =============== Gross unrealized appreciation $ 14,826,097 Gross unrealized depreciation (49,694,602) --------------- Net unrealized depreciation $ (34,868,505) =============== (a) The security may be offered and sold to "qualified institutional buyers" under Rule 144A of the Securities Act of 1933. (b) Floating rate security. (c) The security is a perpetual bond and has no stated maturity date. (d) Depositary receipts. (e) Investments in companies considered to be an affiliate of the Fund, for purposes of Section 2(a)(3) of the Investment Company Act of 1940, were as follows: -------------------------------------------------------------------------- Affiliate Net Interest Activity Income -------------------------------------------------------------------------- BlackRock Liquidity Series, LLC $46,128,435 $3,035,423 Cash Sweep Series -------------------------------------------------------------------------- (f) Represents the current yield as of July 31, 2007. (g) All or a portion of security held as collateral in connection with open financial futures contracts. o For Fund compliance purposes, the Fund's industry classifications refer to any one or more of the industry sub-classifications used by one or more widely recognized market indexes or ratings group indexes, and/or as defined by Fund 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. BlackRock Preferred Income Strategies Fund, Inc. Schedule of Investments as of July 31, 2007 (Unaudited) (in U.S. dollars) Preferred Securities o Financial futures contracts sold as of July 31, 2007 were as follows: --------------------------------------------------------------------------------------------------------- Number of Expiration Face Unrealized Contracts Issue Date Value Depreciation --------------------------------------------------------------------------------------------------------- 7,135 10-Year U.S. Treasury Notes September 2007 $ 753,989,669 $ (12,465,409) 1,554 30-Year U.S. Treasury Notes September 2007 $ 166,491,277 $ (4,545,848) --------------------------------------------------------------------------------------------------------- Total Unrealized Depreciation $ (17,011,257) ============= o Swaps outstanding as of July 31, 2007 were as follows: ------------------------------------------------------------------------------------- Notional Unrealized Amount Appreciation (Depreciation) ------------------------------------------------------------------------------------- Sold credit default protection on a basket of preferred securities and receive 2.03% Broker, Lehman Brothers Special Finance Expires September 2007 $ 36,000,000 $ 172,512 Pay a fixed rate of 5.132% and receive a floating rate based on 3-month LIBOR Broker, JPMorgan Chase Expires September 2016 $ 125,000,000 3,145,305 Receive a fixed rate of 5.813% and pay a floating rate based on 3-month USD LIBOR Broker, Goldman Sachs Expires June 2017 $ 125,000,000 2,888,896 Pay a fixed rate of 5.53% and receive a floating rate based on 3-month USD LIBOR Broker, Citibank N.A. Expires July 2017 $ 193,900,000 (317,608) Receive a fixed rate of 5.55125% and pay a floating rate based on 3-month USD LIBOR Broker, Credit Suisse First Boston Expires August 2017 $ 58,300,000 176,008 ------------------------------------------------------------------------------------- Total $ 6,065,113 ============ Item 2 - Controls and Procedures 2(a) - The registrant's principal executive and principal financial officers or persons performing similar functions have concluded that the registrant's disclosure controls and procedures (as defined in Rule 30a-3(c) under the Investment Company Act of 1940, as amended (the "1940 Act")) are effective as of a date within 90 days of the filing of this report based on the evaluation of these controls and procedures required by Rule 30a-3(b) under the 1940 Act and Rule 13a-15(b) under the Securities and Exchange Act of 1934, as amended. 2(b) - There were no changes in the registrant's internal control over financial reporting (as defined in Rule 30a-3(d) under the 1940 Act (17 CFR 270.30a-3(d)) that occurred during the registrant's last fiscal quarter that have materially affected, or are reasonably likely to materially affect, the registrant's internal control over financial reporting. Item 3 - Exhibits 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. BlackRock Preferred Income Strategies Fund, Inc. By: /s/ Robert C. Doll, Jr. ----------------------------------- Robert C. Doll, Jr., Chief Executive Officer (principal executive officer) of BlackRock Preferred Income Strategies Fund, Inc. Date: September 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 (principal executive officer) of BlackRock Preferred Income Strategies Fund, Inc. Date: September 20, 2007 By: /s/ Donald C. Burke ----------------------------------- Donald C. Burke, Chief Financial Officer (principal financial officer) of BlackRock Preferred Income Strategies Fund, Inc. Date: September 20, 2007