MUNIYIELD INSURED FUND, INC.

FILE # 811-6540

ATTACHMENT 77O

TRADE DATE	DESCRIPTION OF SECURITY	ISSUE SIZE	AMOUNT PURCHASED	LIST OF UNDERWRITERS
5/20/2005	NY City 5% 6/1/16, 30, or 33	853,135,000	9,000,000	Bear Stearns CIBC World Markets Citigroup Goldman Sachs Morgan Stanley UBS Financial Services First Albany JP Morgan Lehman Brothers Merrill Lynch M.R. Beal Raymond James Roosevelt & Cross Ramirez & Co Advest Inc A.G. Edwards Banc of America Jackson Securities Siebert Brandford
6/3/2005	Puerto Rico IFA 5%7/1/41	1,332,962,916	11,400,000	UBS Financial Services Banc of America Merrill Lynch Citigroup Goldman Sachs J.P Morgan Lehman Brothers Morgan Stanley Raymond James Ramirez & Co. Wachovia Bank
6/8/2005	University of Calif. 4.75% 5/15/26-27	558,425,000	12,000,000	Morgan Stanley Alamo Capital Citigroup E.J. De La Rosa Goldman Sachs Great Pacific JP Morgan Merrill Lynch
6/9/2005	Miami Dade Florida Subordinate 10/1/31 - 37	184,312,247	10,000,000	Raymond James Ramirez & Co. Citigroup Global Estrada Hinojosa M.R. Beal Guzman & Co Jackson Securities Loop Capital Markets Merrill Lynch RBC Dain Rauscher Siebert Brandford
7/15/2005	Mass School Building Authority 5% 8/15/30	2,500,000,000	19,330,000	UBS Financial Services Citigroup Global Markets Lehman Brother, J.P. Morgan Securities Inc. Merrill Lynch & Co. Advest Inc. A.G. Edwards & Sons, Cabrera Capital Markets Corby Capital Markets Finacorp Securities First Albany Capital Jackson Securities. Melvin Securities Moors & Cabot M.R. Beal & Company National Financial Markets Group Oppenheimer & Co Ramirez & Co., Inc. Raymond James & Assoc., RBC Dain Rauscher Siebert Brandford Shank. Southwest Securities. Sovereign Securities
7/15/2005	New York City GO 5% 8/1/30	846,810,000	8,500,000	M.R. Beal & Company Bear Stearns Citigroup Global Lehman Brother UBS Financial Goldman Sachs Morgan Stanley First Albany JP Morgan Merrill Lynch Ramirez & Co Roosevelt Advest Apex Pryor Sec. Banc of America CIBC World Markets Commerce Capital Markets RBC Dain Rauscher A.G. Edwards Jackson Securities Janney Montgomery Legg Mason Loop Capital Popular Securities Prager, Sealy & Co Raymond James Wachovia Bank
7/28/2005	Golden State Tobacco 0% 6/1/27	3,140,563,508	10,000,000	Bear Stearns Citigroup Global Lehman Brothers UBS Financial Goldman Sachs Siebert Brandford Shank. Merrill Lynch & Co Morgan Stanley A.G. Edwards & Sons, Alamo Capital E.J. De La Rosa & Co First Albany Capital Great Pacific Sec Jackson Securities J.P. Morgan M.R. Beal & Co Prager, Sealy & Co. Southwest Sec. Stone & Youngberg Wachovia Bank
7/28/2005	Golden State Tobacco 5% 6/1/35	3,140,563,508	28,000,000	Bear Stearns Citigroup Global Lehman Brothers UBS Financial Goldman Sachs Siebert Brandford Shank. Merrill Lynch & Co Morgan Stanley A.G. Edwards & Sons, Alamo Capital E.J. De La Rosa & Co First Albany Capital Great Pacific Sec Jackson Securities J.P. Morgan M.R. Beal & Co Prager, Sealy & Co. Southwest Sec. Stone & Youngberg Wachovia Bank
8/3/2005	Pennsylvania Higher Ed 5% 7/15/38	141,620,000	5,365,000	Morgan Stanley Goldman Sachs Bear Stearns Lehman Brothers Merrill Lynch JP Morgan PNC Capital Markets
8/11/2005	San Francisco Bay Area Rapid Transit 5% 7/1/34	352,095,000	10,855,000	Morgan Stanley Citigroup Bear Stearns Goldman Sachs Merrill Lynch Backstrom McCarley Jackson Securities Loop Capital Siebert Brandford
8/25/2005	Kentucky Property 5% 8/1/25	218,275,000	2,500,000	Citigroup Morgan Stanley Bear Stearns UBS Financial JJB Hilliard Morgan Keegan NatCity Investments JP Morgan Ross Sinclaire AG Edwards Edward D. Jones First Kentucky Seasongood & Mayer Merrill Lynch
8/31/2005	Phoenix AZ Civic Impt Muni 5% 7/1/2035	300,000,000	15,000,000	Lehman Brothers Banc of America Merrill Lynch RBC Dain Rauscher Stone & Youngberg Hutchinson, Shockey, Erley Loop Capital Zions First Nat’l Bank
8/31/2005	Phoenix AZ Civic Impt Muni 5% 7/1/2030	300,000,000	10,000,000	Lehman Brothers Banc of America Merrill Lynch RBC Dain Rauscher Stone & Youngberg Hutchinson, Shockey, Erley Loop Capital Zions First Nat’l
9/15/2005	Miami Dade Cnty Florida Jackson Health 5% 6/1/30	300,000,000	6,575,000	JP Morgan Banc of America Estrada Hinojosa Jackson Securities Morgan Keegan Guzman & Co Loop Capital Markets M.R. Beal & Co Merrill Lynch Ramirez & Co Raymond James Siebert Brandford
9/15/2005	Miami Dade Cnty Florida Jackson Health 5% 6/1/31	300,000,000	6,910,000	JP Morgan Banc of America Estrada Hinojosa Jackson Securities Morgan Keegan Guzman & Co Loop Capital Markets M.R. Beal & Co Merrill Lynch Ramirez & Co Raymond James Siebert Brandford
9/30/2005	Mass St Muni GO 5% 09/01/2024	761,095,000	10,000,000	Goldman Sachs Bear Stearns Citigroup JP Morgan Lehman Brothers Merrill Lynch UBS Financial A.G. Edwards & Sons Advest Banc of America Corby Capital Edward D. Jones First Albany M.R. Beal Morgan Keegan National Financial Ramirez & Co. Raymond James RBC Dain Rauscher Southwest Securities Wachovia Bank Eastern Bank
9/30/2005	NYC Muni Water Finance Authority  5% 6/15/2032	524,530,000	1,000,000	Merrill Lynch Goldman Sachs First Albany UBS Financial Bear Stearns Citigroup JP Morgan Morgan Stanley Lehman Brothers Siebert Brandford Banc of America M.R Beal CIBC World Markets RBC Dain Rauscher A.G. Edwards First American Municipals Raymond James Roosevelt & Cross Wachovia Bank
10/6/2005	Oregon State COP 5% 11/1/30	159,325,000	8,000,000	Citigroup Banc of America Merrill Lynch Siebert Brandford UBS Financial
10/13/2005	NJ Transportation Trust 5.00% 6/15/19,20	953,020,000	16,880,000	JP Morgan Bear Stearns Citigroup Global Goldman Sachs Merrill Lynch Morgan Stanley UBS Financial Services Advest Inc Banc of America NW Capital Piper jaffray Popular Securities Powell Capital Markets Ramirez & Co RBC Dain Rauscher Siebert Brandford Sterne Agee & Leach Wachovia Bank
10/20/2005	Miami Dade Airport Florida 5.00% 10/1/30	600,000,000	11,400,000	Banc of America Estrada Hinojosa Morgan Keegan Morgan Stanley MR Beal Guzman & Co Jackson Securities Lehman Brothers Loop Capital Markets Merrill Lynch & Co Ramirez & Co RBC Dain Rauscher Siebert Brandford Shank Stifel, Nicolaus & Co.
10/20/2005	Miami Dade Airport Florida 5.00% 10/1/35	600,000,000	10,000,000	Banc of America Estrada Hinojosa Morgan Keegan Morgan Stanley MR Beal Guzman & Co Jackson Securities Lehman Brothers Loop Capital Markets Merrill Lynch & Co Ramirez & Co RBC Dain Rauscher Siebert Brandford Shank Stifel, Nicolaus & Co.