BlackRock MuniYield California Insured Fund, Inc.

FILE #811-06692

ATTACHMENT 77O

TRADE DATE	DESCRIPTION OF SECURITY	ISSUE SIZE	AMOUNT PURCHASED	LIST OF UNDERWRITERS
11/1/2006	IDEARC INC	2,850,000,000	10,700,000	J.P. Morgan Securities Inc.; Bear, Stearns & Co. Inc.; Banc of America Securities LLC; Barclays Capital Inc.; Citigroup Global Markets Inc.; ABN AMRO Incorporated; Credit Suisse Securities (USA) LLC; Goldman, Sachs & Co.; Merrill Lynch, Pierce, Fenner & Smith Incorporated; Morgan Stanley & Co. Incorporated; Greenwich Capital Markets, Inc.; Lehman Brothers Inc.; Mitsubishi UFJ Securities International plc; RBC Capital Markets Corporation; UBS Securities LLC; Wachovia Capital Markets, LLC
12/7/2006	FORD MOTOR COMPANY	4,500,000,000	5,710,000	Citigroup Global Markets Inc.; Goldman, Sachs & Co.; J.P. Morgan Securities Inc.; Deutsche Bank Securities Inc.; Lehman Brothers Inc.; Merrill Lynch, Pierce, Fenner & Smith Incorporated; Morgan Stanley & Co. Incorporated; BNP Paribas Securities Corp.; HSBC Securities (USA) Inc.; The Royal Bank of Scotland plc; ABN AMRO Rothschild LLC; Barclays Capital Inc.; Credit Suisse Securities (USA) LLC; UBS Securities LLC; Scotia Capital (USA) Inc.; Bear, Stearns & Co. Inc.; Calyon Securities (USA) Inc.; Comerica Securities, Inc.; Dresdner Kleinwort Wasserstein Securities LLC; Harris Nesbitt Corp.; BNY Capital Markets, Inc.; Fortis Securities LLC; PNC Capital Markets, Inc.; Wells Fargo Securities, LLC

BlackRock MuniYield California Insured Fund, Inc.

FILE #811-06692

ATTACHMENT 77O

TRADE DATE	DESCRIPTION OF SECURITY	ISSUE SIZE	AMOUNT PURCHASED	LIST OF UNDERWRITERS
04/20/07	PUERTO RICO ELEC PWR AUTH PWR REV	1,943,565,000	$5,750,000	JPMorgan; UBS Investment Bank; Wachovia Bank, National Association; Banc of America Securities LLC; BBVAPR MSD; Citigroup; Goldman, Sachs & Co.; Lehman Brothers; Merrill Lynch & Co.; Morgan Stanley; Popular Securities; RBC Capital Markets; Samuel A. Ramirez & Co.; Santander Securities
05/09/07	EAST BAY CALIF MUN UTIL DIST WTR S	450,000,000.00	$9,000,000	Citigroup Global Markets Inc.; Merrill Lynch & Co.; Bear, Stearns & Co. Inc.; E.J. De La Rosa & Co., Inc.; Lehman Brothers; Siebert Brandford Shank & Co., LLC
07/13/07	Puerto Rico Sales Tax Financing Corp.	2,667,603,572.60	20,000,000	Goldman, Sachs & Co., Lehman Brothers A.G. Edwards & Sons, Inc.,Banc of America Securities LLC, BBVAPR MSD, Bear, Stearns & Co. Inc., Citigroup Global Markets Inc., First Albany Capital Inc., J.P. Morgan Securities, Inc., Loop Capital Markets, Merrill Lynch & Co., Morgan Stanley & Co. Incorporated., Oriental Financial Services, Popular Securities, Inc., RBC Capital Markets, Samuel A. Ramirez & Co., Inc., Santander Securities, UBS Securities LLC, Wachovia Bank, National Association