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 811-7156 Name of Fund: MuniYield Florida Insured Fund, Inc. Fund Address: P.O. Box 9011 Princeton, NJ 08543-9011 Name and address of agent for service: Terry K. Glenn, President, MuniYield Florida Insured 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: (609) 282-2800 Date of fiscal year end: 10/31/04 Date of reporting period: 05/01/04 - 07/31/04 Item 1 - Schedule of Investments MuniYield Florida Insured Fund Schedule of Investments as of July 31, 2004 (in Thousands) S&P Moody's Face Ratings Ratings Amount Municipal Bonds Value Florida - 129.4% NR* Aaa $1,300 Alachua County, Florida, School Board, COP, 5.25% due 7/01/2029(a) $ 1,341 AA NR* 1,665 Beacon Tradeport Community Development District, Florida, Special Assessment Revenue Refunding Bonds (Commercial Project), Series A, 5.625% due 5/01/2032 (k) 1,732 AAA Aaa 700 Boynton Beach, Florida, Utility System Revenue Refunding Bonds, 6.25% due 11/01/2020(c)(h) 822 AAA Aaa 3,000 Brevard County, Florida, IDR (NUI Corporation Project), AMT, 6.40% due 10/01/2024(a) 3,081 AAA Aaa 5,000 Dade County, Florida, Aviation Revenue Bonds, AMT, Series B, 5.75% due 10/01/2012(b) 5,299 NR* Aaa 1,000 Daytona Beach, Florida, Utility System Revenue Refunding Bonds, Series B, 5% due 11/15/2027(c) 1,008 AAA Aaa 1,000 Deltona, Florida, Utility System Revenue Bonds, 5.125% due 10/01/2027(b) 1,020 NR* Aaa 25 Duval County, Florida, HFA, S/F Mortgage Revenue Refunding Bonds, AMT, 6.20% due 4/01/2020(b)(d)(e) 25 AAA Aaa 2,275 Escambia County, Florida, HFA, S/F Mortgage Revenue Refunding Bonds, AMT, 7% due 4/01/2028(d)(e) 2,339 NR* Aaa 4,585 Escambia County, Florida, Health Facilities Authority, Health Facility Revenue Bonds (Florida Health Care Facility Loan), 5.95% due 7/01/2020(a) 4,745 AAA Aaa 1,000 Escambia County, Florida, Health Facilities Authority, Revenue Refunding Bonds (Ascension Health Credit), Series A-1, 5.75% due 11/15/2009(a)(l) 1,135 AAA Aaa 2,110 First Florida Governmental Financing Commission Revenue Bonds, 5.70% due 7/01/2017(b) 2,299 AAA Aaa 1,000 Fishhawk Community Development District, Florida, Special Assessment Revenue Refunding Bonds, 5.25% due 5/01/2018(b) 1,084 AAA Aaa 1,150 Florida HFA, Housing Revenue Bonds (Brittany Rosemont Apartments), AMT, Series C-1, 6.75% due 8/01/2014(a) 1,182 AAA Aaa 785 Florida Housing Finance Corporation, Homeowner Mortgage Revenue Refunding Bonds, AMT, Series 4, 6.25% due 7/01/2022(f) 808 Portfolio Abbreviations To simplify the listings of MuniYield Florida Insured Fund's portfolio holdings in the Schedule of Investments, we have abbreviated the names of many of the securities according to the list below. AMT Alternative Minimum Tax (subject to) COP Certificates of Participation DRIVERS Derivative Inverse Tax-Exempt Receipts GO General Obligation Bonds HFA Housing Finance Agency IDA Industrial Development Authority IDR Industrial Development Revenue Bonds RIB Residual Interest Bonds S/F Single-Family MuniYield Florida Insured Fund Schedule of Investments as of July 31, 2004 (concluded) (in Thousands) S&P Moody's Face Ratings Ratings Amount Municipal Bonds Value Florida (concluded) AA Aaa $1,650 Florida State Board of Education, Capital Outlay, GO (Public Education), Series B, 5.875% due 6/01/2005(l) $ 1,726 AAA Aaa 6,190 Florida State Board of Education, Lottery Revenue Bonds, Series A, 6% due 7/01/2015(c) 7,044 AAA Aaa 1,000 Florida State Governmental Utility Authority, Utility Revenue Bonds (Lehigh Utility System), 5.125% due 10/01/2033(a) 1,014 AA- Aa3 1,860 Florida State Turnpike Authority, Turnpike Revenue Bonds (Department of Transportation), Series B, 5% due 7/01/2030 1,862 A A3 3,700 Highlands County, Florida, Health Facilities Authority, Hospital Revenue Bonds (Adventist Health System), Series A, 6% due 11/15/2031 3,894 NR* Baa1 895 Hillsborough County, Florida, IDA, Hospital Revenue Refunding Bonds (Tampa General Hospital Project), Series A, 5.25% due 10/01/2024 870 NR* Aaa 6,000 Hillsborough County, Florida, School Board, COP, 5.375% due 7/01/2026(b) 6,181 AAA Aaa 2,615 Hillsborough County, Florida, School District, Sales Tax Revenue Refunding Bonds, 5.375% due 10/01/2020(a) 2,810 Jacksonville Electric Authority, Florida, Water and Sewer System Revenue Bonds(b): AAA Aaa 2,000 Series A, 5.375% due 10/01/2030 2,028 AAA Aaa 2,610 Series C, 5.25% due 10/01/2037 2,628 Jacksonville, Florida, Economic Development Commission, Health Care Facilities Revenue Bonds (Mayo Clinic-Jacksonville) (b): AAA Aaa 1,000 Series A, 5.50% due 11/15/2036 1,044 AAA Aaa 750 Series B, 5.50% due 11/15/2036 786 AAA Aaa 1,455 Jacksonville, Florida, Guaranteed Entitlement Revenue Refunding and Improvement Bonds, 5.25% due 10/01/2032(c) 1,491 Jacksonville, Florida, Port Authority, Seaport Revenue Bonds, AMT(b): NR* Aaa 1,025 5.625% due 11/01/2010(l) 1,142 NR* Aaa 1,225 5.625% due 11/01/2026 1,268 AAA Aaa 2,000 Lakeland, Florida, Electric and Water Revenue Refunding Bonds, Series A, 5% due 10/01/2028(b) 2,008 AAA Aaa 1,000 Lee County, Florida, Airport Revenue Bonds, AMT, Series A, 6% due 10/01/2029(f) 1,083 Lee County, Florida, Capital Revenue Bonds(a): AAA Aaa 1,285 5.25% due 10/01/2023 1,357 AAA Aaa 1,355 5.25% due 10/01/2024 1,423 AAA NR* 395 Lee County, Florida, HFA, S/F Mortgage Revenue Bonds (Multi-County Program), AMT, Series A, Sub-Series 3, 7.45% due 9/01/2027(d)(e)(i) 405 AAA Aaa 1,000 Leesburg, Florida, Capital Improvement Revenue Bonds, 5.25% due 10/01/2034(c) 1,029 AAA Aaa 500 Marco Island, Florida, Utility System Revenue Bonds, 5.25% due 10/01/2021(b) 533 NR* Aaa 1,000 Martin County, Florida, Utilities System Revenue Bonds, 5.125% due 10/01/2033(a) 1,014 AAA Aaa 2,000 Miami Beach, Florida, Water and Sewer Revenue Bonds, 5.75% due 9/01/2025(a) 2,172 AAA Aaa 5,000 Miami-Dade County, Florida, Aviation Revenue Bonds (Miami International Airport), AMT, Series A, 6% due 10/01/2024(c) 5,509 AAA Aaa 2,000 Miami-Dade County, Florida, Educational Facilities Authority Revenue Bonds (University of Miami), Series A, 5.75% due 4/01/2029(a) 2,149 AAA Aaa 1,000 Miami-Dade County, Florida, Expressway Authority, Toll System Revenue Bonds, Series B, 5.25% due 7/01/2027(c) 1,036 AAA NR* 3,480 Miami-Dade County, Florida, Health Facilities Authority, Hospital Revenue Refunding Bonds, DRIVERS, Series 208, 9.87% due 8/15/2017(a)(j) 4,082 AAA Aaa 1,115 Miami-Dade County, Florida, IDA, IDR (BAC Funding Corporation Project), Series A, 5.375% due 10/01/2030(a) 1,161 AAA Aaa 2,000 Miami-Dade County, Florida, School Board COP, Series A, 5.50% due 10/01/2009(f)(l) 2,232 AAA Aaa 1,000 Ocoee, Florida, Water and Sewer System, Revenue Refunding and Improvement Bonds, 5.125% due 10/01/2033(a) 1,014 NR* Aaa 4,765 Orange County, Florida, Educational Facilities Authority, Educational Facilities Revenue Refunding Bonds (Rollins College Project), 5.50% due 12/01/2032(a) 5,050 Orange County, Florida, Health Facilities Authority, Hospital Revenue Bonds: A A3 600 (Adventist Health System), 6.25% due 11/15/2024 642 A A2 1,835 (Orlando Regional Healthcare), 6% due 12/01/2029 1,917 Orange County, Florida, Sales Tax Revenue Refunding Bonds(c): AAA Aaa 1,000 Series A, 5.125% due 1/01/2023 1,037 AAA Aaa 2,000 Series B, 5% due 1/01/2025 2,030 NR* Aaa 6,500 Orange County, Florida, School Board, COP, Series A, 5.25% due 8/01/2023(b) 6,779 AAA Aaa 5,330 Orange County, Florida, Tourist Development, Tax Revenue Bonds, 5.50% due 10/01/2032(a) 5,603 Orlando and Orange County, Florida, Expressway Authority Revenue Bonds, Series B(a): AAA Aaa 1,000 5% due 7/01/2030 1,003 AAA Aaa 5,015 5% due 7/01/2035 5,011 NR* Aaa 1,530 Osceola County, Florida, Infrastructure Sales Surplus Tax Revenue Bonds, 5.25% due 10/01/2025(a) 1,585 NR* Aaa 2,000 Osceola County, Florida, School Board, COP, Series A, 5.25% due 6/01/2027(a) 2,063 AAA Aaa 1,100 Osceola County, Florida, Tourist Development Tax Revenue Bonds, Series A, 5.50% due 10/01/2027(c) 1,165 AAA Aaa 1,500 Palm Beach County, Florida, Criminal Justice Facilities Revenue Bonds, 7.20% due 6/01/2015(c) 1,902 AAA Aaa 2,000 Palm Beach County, Florida, School Board, COP, Refunding, Series D, 5.25% due 8/01/2021(f) 2,118 Palm Beach County, Florida, School Board, COP, Series A: AAA Aaa 5,000 6% due 8/01/2010(c)(l) 5,789 AAA Aaa 1,500 5.50% due 8/01/2022(a) 1,614 AAA Aaa 1,000 Pasco County, Florida, Sales Tax Revenue Bonds (Half-Cent), 5% due 12/01/2033(a) 1,001 NR* Aaa 1,000 Pembroke Pines, Florida, Public Improvement Revenue Bonds, Series A, 5% due 10/01/2034(a) 1,002 NR* Aaa 1,000 Polk County, Florida, Utility System Revenue Bonds, 5.25% due 10/01/2022(c) 1,060 NR* Aaa 1,055 Port St. Lucie, Florida, Utility Revenue Bonds, 5.25% due 9/01/2024(b) 1,109 AAA Aaa 1,000 Saint Lucie, Florida, West Services District, Utility Revenue Bonds, 5.25% due 10/01/2034(b) 1,032 AAA Aaa 4,920 Sarasota County, Florida, Utility System Revenue Bonds, 6.50% due 10/01/2004(c)(l) 5,061 AAA NR* 2,000 South Broward, Florida, Hospital District Revenue Bonds, DRIVERS, Series 337, 9.843% due 5/01/2032(b)(j) 2,265 A A2 1,000 South Lake County, Florida, Hospital District Revenue Bonds (South Lake Hospital Inc.), 5.80% due 10/01/2034 1,013 AAA Aaa 1,240 Stuart, Florida, Public Utilities Revenue Refunding and Improvement Bonds, 5.25% due 10/01/2024(c) 1,299 Village Center Community Development District, Florida, Recreational Revenue Bonds, Series A(b): AAA Aaa 1,640 5.375% due 11/01/2034 1,715 AAA Aaa 1,000 5.125% due 11/01/2036 1,009 Village Center Community Development District, Florida, Utility Revenue Bonds(b): AAA Aaa 2,585 5.25% due 10/01/2023 2,716 AAA Aaa 4,000 5.125% due 10/01/2028 4,061 New Jersey - 0.5% BBB Baa3 735 Tobacco Settlement Financing Corporation of New Jersey Revenue Bonds, 7% due 6/01/2041 680 Puerto Rico - 15.4% BBB Baa3 1,095 Children's Trust Fund Project of Puerto Rico, Tobacco Settlement Revenue Refunding Bonds, 5.375% due 5/15/2033 955 AAA NR* 7,500 Puerto Rico Commonwealth, GO, Refunding, DRIVERS, Series 232, 9.657% due 7/01/2017(g)(j) 9,493 AAA Aaa 1,970 Puerto Rico Electric Power Authority, Power Revenue Bonds, Series II, 5.375% due 7/01/2019(b) 2,153 A- Baa1 1,000 Puerto Rico Public Buildings Authority, Government Facilities Revenue Refunding Bonds, Series I, 5% due 7/01/2036 974 BBB+ Baa2 1,145 Puerto Rico Public Finance Corporation Revenue Bonds, Commonwealth Appropriation, Series E, 5.70% due 8/01/2025(l) 1,292 NR* Aaa 3,550 Puerto Rico Public Finance Corporation, Revenue Refunding Bonds, RIB, Series 522X, 9.44% due 2/01/2010(b)(j)(l) 4,413 Total Municipal Bonds (Cost - $172,815) - 145.3% 181,526 Shares Held Short-Term Securities 3,219 Merrill Lynch Institutional Tax-Exempt Fund (m) 3,219 Total Short-Term Securities (Cost - $3,219) - 2.6% 3,219 Total Investments (Cost - $176,034**) - 147.9% 184,745 Other Assets Less Liabilities - 0.1% 176 Preferred Shares, at Redemption Value - (48.0%) (60,011) ---------- Net Assets Applicable to Common Shares - 100.0% $ 124,910 ========== (a) AMBAC Insured. (b) MBIA Insured. (c) FGIC Insured. (d) GNMA Collateralized. (e) FNMA Collateralized. (f) FSA Insured. (g) XL Capital Insured. (h) Escrowed to maturity. (i) FHLMC Collateralized. (j) The interest rate is subject to change periodically and inversely based upon prevailing market rates. The interest rate shown is the rate in effect at July 31, 2004. (k) Radian Insured. (l) Prerefunded. (m) Investments in companies considered to be an affiliate of the Fund (such companies are defined as "Affiliated Companies" in Section 2(a)(3) of the Investment Company Act of 1940) were as follows: (in Thousands) Net Dividend Affiliate Activity Income Merrill Lynch Institutional Tax-Exempt Fund (2,500) $ 24 * Not Rated. ** The cost and unrealized appreciation/depreciation of investments as of July 31, 2004, as computed for federal income tax purposes, were as follows: (in Thousands) Aggregate cost $ 176,111 ============== Gross unrealized appreciation $ 8,978 Gross unrealized depreciation (344) -------------- Net unrealized appreciation $ 8,634 ============== Forward interest rate swaps outstanding as of July 31, 2004 were as follows: (in Thousands) Notional Unrealized Amount Depreciation Receive a variable rate equal to 7-Day Bond Market Association Municipal Swap Index Rate and pay a fixed rate of 4.153% Broker, J.P. Morgan Chase Bank Expires August 2014 $ 7,300 $ (247) Receive a variable rate equal to 7-Day Bond Market Association Municipal Swap Index Rate and pay a fixed rate of 4.342% Broker, J.P. Morgan Chase Bank Expires October 2024 $10,000 (44) Receive a variable rate equal to 7-Day Bond Market Association Municipal Swap Index Rate and pay a fixed rate of 3.836% Broker, J.P. Morgan Chase Bank Expires October 2014 $ 7,300 (26) -------- Total $ (317) ======== Item 2 - Controls and Procedures 2(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. 2(b) - There were no changes in the registrant's internal control over financial reporting (as defined in Rule 30a-3(d) under the Act (17 CFR 270.30a-3(d)) that occurred during the last fiscal quarter of the period covered by this report that has materially affected, or is reasonably likely to materially affect, the registrant's internal control over financial reporting. Item 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. MuniYield Florida Insured Fund, Inc. By: _/s/ Terry K. Glenn________ Terry K. Glenn, President of MuniYield Florida Insured Fund, Inc. Date: September 17, 2004 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/ Terry K. Glenn________ Terry K. Glenn, President of MuniYield Florida Insured Fund, Inc. Date: September 17, 2004 By: _/s/ Donald C. Burke________ Donald C. Burke, Chief Financial Officer of MuniYield Florida Insured Fund, Inc. Date: September 17, 2004