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 811-6692 Name of Fund: MuniYield California Insured 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, MuniYield California 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: 10/31/2006 Date of reporting period: 05/01/06 - 07/31/06 Item 1 - Schedule of Investments MuniYield California Insured Fund, Inc. Schedule of Investments as of July 31, 2006 (in Thousands) Face Amount Municipal Bonds Value California - 143.0% $ 7,000 ABAG Finance Authority for Nonprofit Corporations, California, COP (Children's Hospital Medical Center), 6% due 12/01/2029 (a) $ 7,489 2,350 Alameda, California, GO, 5% due 8/01/2033 (f) 2,427 5,665 Alhambra, California, Unified School District, GO (Election of 2004), Series A, 5% due 8/01/2029 (b) 5,873 3,580 Anaheim, California, Public Financing Authority, Electric System Distribution Facilities Revenue Bonds, Series A, 5% due 10/01/2031 (e) 3,684 2,400 Anaheim, California, Union High School District, GO (Election of 2002), 5% due 8/01/2027 (f) 2,474 3,675 Bakersfield, California, COP, Refunding (Convention Center Expansion Project), 5.80% due 4/01/2007 (f)(g) 3,764 255 Bay Area Government Association, California, Tax Allocation Revenue Refunding Bonds (California Redevelopment Agency Pool), Series A, 6% due 12/15/2024 (e) 257 2,700 Bay Area Toll Authority, California, Toll Bridge Revenue Refunding Bonds (San Francisco Bay Area), Series F, 5% due 4/01/2031 2,800 3,990 Brentwood, California, Infrastructure Refinancing Authority, Infrastructure Revenue Refunding Bonds, Series A, 5.20% due 9/02/2029 (e) 4,153 3,215 California Community College Financing Authority, Lease Revenue Bonds, Series A, 5.95% due 12/01/2009 (f)(g) 3,497 1,100 California Community College Financing Authority, Lease Revenue Bonds, Series A, 6% due 12/01/2009 (f)(g) 1,198 5,000 California Educational Facilities Authority Revenue Bonds (University of San Diego), Series A, 5.50% due 10/01/2032 5,281 11,565 California Educational Facilities Authority, Student Loan Revenue Bonds (CalEdge Loan Program), AMT, 5.55% due 4/01/2028 (a) 11,951 2,140 California HFA, Home Mortgage Revenue Bonds, AMT, Series E, 5% due 2/01/2024 (b) 2,164 2,500 California HFA, Home Mortgage Revenue Bonds, VRDN, AMT, Series N, 3.65% due 8/01/2021 (e)(i) 2,500 75 California HFA, Home Mortgage Revenue Bonds, VRDN, AMT, Series R, 3.64% due 8/01/2023 (a)(i) 75 14,600 California HFA, Home Mortgage Revenue Bonds, VRDN, Series F, 3.65% due 2/01/2033 (a)(i) 14,600 2,750 California Health Facilities Financing Authority Revenue Bonds (Kaiser Permanente), Series A, 5.50% due 6/01/2022 (e)(j) 2,881 440 California Rural Home Mortgage Finance Authority, S/F Mortgage Revenue Bonds (Mortgage- Backed Securities Program), AMT, Series A, 6.35% due 12/01/2029 (c)(d) 444 210 California Rural Home Mortgage Finance Authority, S/F Mortgage Revenue Bonds (Mortgage- Backed Securities Program), AMT, Series B, 6.25% due 12/01/2031 (d) 214 Portfolio Abbreviations To simplify the listings of MuniYield California Insured Fund, Inc.'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 RIB Residual Interest Bonds RITR Residual Interest Trust Receipts ROLS Reset Option Long Securities S/F Single-Family VRDN Variable Rate Demand Notes MuniYield California Insured Fund, Inc. Schedule of Investments as of July 31, 2006 (concluded) (in Thousands) Face Amount Municipal Bonds Value California $ 12,680 California State Department of Veteran Affairs, Home Purpose Revenue Refunding (concluded) Bonds, Series A, 5.35% due 12/01/2027 (a) $ 13,373 860 California State, GO, 6.25% due 10/01/2019 (f) 863 9,935 California State, GO, Refunding, DRIVERS, AMT, Series 239, 7.424% due 12/01/2032 (a)(h) 10,403 3,000 California State, GO, Refunding, Series BX, 5.50% due 12/01/2031 (e) 3,033 4,530 California State Public Works Board, Lease Revenue Bonds (Department of Corrections-Ten Administrative Segregation Housing Units), Series A, 5.25% due 3/01/2020 (a) 4,781 16,675 California State Public Works Board, Lease Revenue Refunding Bonds (Department of Corrections), Series B, 5.625% due 11/01/2016 (f) 17,081 2,660 California State University, Systemwide Revenue Bonds, Series A, 5.375% due 11/01/2018 (b) 2,865 2,720 California State University, Systemwide Revenue Refunding Bonds, Series A, 5.125% due 11/01/2026 (a) 2,822 5,950 California State, Various Purpose, GO, 5.50% due 11/01/2033 6,396 4,100 California Statewide Communities Development Authority, COP (Kaiser Permanente), 5.30% due 12/01/2015 (e)(j) 4,240 3,685 California Statewide Communities Development Authority, Health Facility Revenue Bonds (Memorial Health Services), Series A, 6% due 10/01/2023 4,014 8,155 Calleguas-Las Virgenes, California, Public Financing Authority Revenue Bonds (Calleguas Municipal Water District Project), Series A, 5% due 7/01/2033 (f) 8,365 7,000 Capistrano, California, Unified School District, Community Facility District, Special Tax Refunding Bonds, 5% due 9/01/2029 (b) 7,237 4,600 Ceres, California, Redevelopment Agency, Tax Allocation Bonds (Ceres Redevelopment Project Area Number 1), 5.75% due 11/01/2030 (f) 4,972 6,000 Chaffey, California, Union High School District, GO, Series C, 5.375% due 5/01/2023 (e) 6,417 3,000 Chino Valley, California, Unified School District, GO (Election of 2002), Series C, 5.25% due 8/01/2030 (f) 3,186 5,910 Chula Vista, California, Elementary School District, COP, 5% due 9/01/2029 (f) 6,080 3,275 Coachella Valley, California, Unified School District, GO (Election of 2005), Series A, 5% due 8/01/2025 (b) 3,415 2,540 Coalinga, California, Redevelopment Agency Tax Allocation Bonds, 5.90% due 9/15/2025 (f) 2,790 4,135 Contra Costa, California, Water District, Water Revenue Refunding Bonds, Series L, 5% due 10/01/2032 (e) 4,239 12,180 Contra Costa County, California, COP, Refunding (Merrithew Memorial Hospital Project), 5.375% due 11/01/2017 (f) 12,633 8,500 Corona, California, COP (Clearwater Cogeneration Project), 5% due 9/01/2028 (f) 8,724 5,000 East Bay Municipal Utility District, California, Water System Revenue Bonds, RIB, Series 1317-X, 6.14% due 6/01/2035 (f)(h) 5,346 1,100 El Centro, California, Financing Authority, Water Revenue Bonds, Series A, 5.25% due 10/01/2035 (e) 1,164 2,500 Fontana, California, Public Financing Authority, Subordinate Lien Tax Allocation Revenue Bonds (North Fontana Redevelopment Project), Series A, 5% due 10/01/2022 (a) 2,608 6,000 Fremont, California, Unified School District, Alameda County, GO (Election of 2002), Series B, 5% due 8/01/2030 (e) 6,211 10,755 Fremont, California, Unified School District, Alameda County, GO, Series A, 5.50% due 8/01/2026 (b) 11,560 4,295 Fresno, California, Joint Powers Financing Authority, Lease Revenue Bonds, Series A, 5.75% due 6/01/2026 (e) 4,601 6,930 Fullerton, California, Public Financing Authority, Tax Allocation Revenue Bonds, 5% due 9/01/2027 (a) 7,154 4,390 Glendale, California, Electric Revenue Bonds, 5% due 2/01/2032 (f) 4,500 1,350 Glendora, California, Unified School District, GO (Election of 2005), Series A, 5% due 8/01/2027 (f) 1,404 2,700 Glendora, California, Unified School District, GO (Election of 2005), Series A, 5.25% due 8/01/2030 (f) 2,877 5,000 Hesperia, California, Community Redevelopment Agency, Tax Allocation Bonds, Series A, 5% due 9/01/2025 (k) 5,173 2,500 La Quinta, California, Financing Authority, Local Agency Revenue Bonds, Series A, 5.25% due 9/01/2024 (a) 2,659 3,050 Little Lake, California, City School District, GO, Refunding, 5.50% due 7/01/2025 (e) 3,349 10,260 Lodi, California, Unified School District, GO (Election of 2002), 5% due 8/01/2029 (e) 10,565 7,575 Long Beach, California, Harbor Revenue Bonds, RIB, AMT, Series 786-X, 6.84% due 5/15/2024 (h) 8,142 2,735 Long Beach, California, Harbor Revenue Refunding Bonds, AMT, Series A, 5% due 5/15/2022 (f) 2,827 10,000 Los Angeles, California, Community Redevelopment Agency, Community Redevelopment Financing Authority Revenue Bonds (Bunker Hill Project), Series A, 5% due 12/01/2027 (e) 10,302 290 Los Angeles, California, Department of Airports, Airport Revenue Bonds (Los Angeles International Airport), AMT, Series D, 5.625% due 5/15/2012 (b) 292 2,500 Los Angeles, California, Department of Airports, Airport Revenue Bonds (Ontario International Airport), AMT, Series A, 6% due 5/15/2017 (b) 2,529 5,275 Los Angeles, California, Department of Airports, Airport Revenue Bonds, Series A, 5.25% due 5/15/2019 (b) 5,587 2,435 Los Angeles, California, Department of Water and Power, Waterworks Revenue Bonds, Series C, 5% due 7/01/2034 (f) 2,510 7,365 Los Angeles, California, Harbor Department Revenue Bonds, RIB, AMT, Series 349, 8.53% due 11/01/2026 (f)(h) 7,595 7,000 Los Angeles, California, Harbor Department Revenue Bonds, Trust Receipts, AMT, Class R, Series 7, 8.482% due 11/01/2026 (f)(h) 7,219 2,880 Los Angeles, California, Unified School District, GO (Election of 2004), Series C, 5% due 7/01/2027 (b) 2,979 5,000 Los Angeles, California, Unified School District, GO (Election of 2004), Series F, 5% due 7/01/2030 (b) 5,190 7,000 Los Angeles, California, Unified School District, GO, Series E, 5% due 7/01/2030 (a) 7,244 5,000 Los Angeles, California, Water and Power Revenue Bonds (Power System), Sub-Series A-1, 5% due 7/01/2031 (e) 5,174 8,000 Los Angeles, California, Water and Power Revenue Refunding Bonds, DRIVERS, Series 1302Z, 6.051% due 1/01/2012 (f)(h) 8,490 3,165 Los Angeles, California, Water and Power Revenue Refunding Bonds (Power System), Series A-A-2, 5.375% due 7/01/2021 (f) 3,354 5,240 Los Angeles County, California, Metropolitan Transportation Authority, Sales Tax Revenue Refunding Bonds, Proposition A, First Tier Senior-Series A, 5% due 7/01/2027 (a) 5,438 6,500 Los Angeles County, California, Metropolitan Transportation Authority, Sales Tax Revenue Refunding Bonds, Proposition A, First Tier Senior-Series A, 5% due 7/01/2035 (a) 6,727 2,000 Los Angeles County, California, Metropolitan Transportation Authority, Sales Tax Revenue Refunding Bonds, Proposition C, Second Tier Senior-Series A, 5.25% due 7/01/2030 (b) 2,084 5,000 Los Angeles County, California, Public Works Financing Authority, Lease Revenue Refunding Bonds (Master Refunding Project), Series A, 5% due 12/01/2028 (f) 5,165 3,000 Los Rios, California, Community College District, GO (Election of 2002), Series B, 5% due 8/01/2027 (f) 3,100 2,010 Madera, California, Public Financing Authority, Water and Wastewater Revenue Refunding Bonds, 5% due 3/01/2036 (f) 2,081 6,865 Merced, California, Community College District, GO (School Facilities District Number 1), 5% due 8/01/2031 (f) 7,128 5,370 Metropolitan Water District of Southern California, Waterworks Revenue Bonds, Series B-1, 5% due 10/01/2033 (b) 5,523 1,090 Metropolitan Water District of Southern California, Waterworks Revenue Bonds, Series B-3, 5% due 10/01/2029 (f) 1,127 4,245 Nevada County, California, COP, Refunding, 5.25% due 10/01/2019 (f) 4,475 2,000 New Haven, California, Unified School District, GO, Refunding, 5.75% due 8/01/2020 (e) 2,186 2,720 Oakland, California, GO (Measure DD), Series A, 5% due 1/15/2026 (f) 2,803 4,270 Oakland, California, Sewer Revenue Bonds, Series A, 5% due 6/15/2029 (e) 4,410 2,000 Oakland, California, State Building Authority, Lease Revenue Bonds (Elihu M. Harris State Office Building), Series A, 5.50% due 4/01/2008 (a)(g) 2,079 1,245 Orange County, California, Airport Revenue Refunding Bonds, AMT, 5.625% due 7/01/2012 (f) 1,286 6,360 Orange County, California, Public Financing Authority, Lease Revenue Refunding Bonds (Juvenile Justice Center Facility), 5.375% due 6/01/2018 (a) 6,846 10,000 Oxnard, California, Financing Authority, Wastewater Revenue Bonds (Redwood Trunk Sewer and Headworks Projects), Series A, 5.25% due 6/01/2034 (b) 10,528 9,645 Oxnard, California, Unified High School District, GO, Refunding, Series A, 6.20% due 8/01/2030 (f) 11,327 1,275 Palm Springs, California, Financing Authority, Lease Revenue Refunding Bonds (Convention Center Project), Series A, 5.50% due 11/01/2035 (f) 1,385 4,640 Palmdale, California, Water District Public Facility Corporation, COP, 5% due 10/01/2029 (b) 4,768 1,600 Pittsburg, California, Redevelopment Agency, Subordinate Tax Allocation Bonds (Los Medanos Community Development Project), VRDN, Series A, 3.62% due 9/01/2035 (a)(i) 1,600 5,000 Placentia-Yorba Linda, California, Unified School District, COP, 5% due 10/01/2030 (b) 5,140 5,000 Placentia-Yorba Linda, California, Unified School District, GO (Election of 2002), Series C, 5% due 8/01/2029 (f) 5,183 9,520 Port of Oakland, California, RIB, AMT, Series 1192, 6.84% due 11/01/2027 (b)(h) 10,549 10,000 Port of Oakland, California, RITR, AMT, Class R, Series 5, 7.517% due 11/01/2012 (b)(h) 11,181 7,500 Port of Oakland, California, Revenue Bonds, AMT, Series K, 5.75% due 11/01/2029 (b) 7,888 3,000 Riverside, California, COP, 5% due 9/01/2028 (a) 3,079 6,000 Riverside, California, Unified School District, GO (Election of 2001), Series A, 5.25% due 2/01/2023 (b) 6,376 7,515 Riverside, California, Unified School District, GO (Election of 2001), Series B, 5% due 8/01/2030 (f) 7,803 4,500 Riverside County, California, Asset Leasing Corporation, Leasehold Revenue Refunding Bonds (Riverside County Hospital Project), Series B, 5.70% due 6/01/2016 (f) 4,977 3,100 Roseville, California, Financing Authority, Senior Lien Revenue Refunding Bonds, Series A, 5% due 9/01/2025 (a) 3,217 3,000 Sacramento, California, City Financing Authority, Capital Improvement Revenue Bonds (Community Rein Capital Program), Series A, 5% due 12/01/2036 (a) 3,095 2,565 Saddleback Valley, California, Unified School District, GO, 5% due 8/01/2029 (e) 2,650 5,000 San Bernardino, California, City Unified School District, GO, Series A, 5% due 8/01/2028 (e) 5,163 385 San Bernardino County, California, S/F Home Mortgage Revenue Refunding Bonds, AMT, Series A-1, 6.25% due 12/01/2031 (d) 393 8,000 San Diego, California, Certificates of Undivided Interest, Revenue Bonds, ROLS, Series II-R-551X, 6.654% due 8/01/2024 (b)(h) 8,501 2,665 San Diego, California, Community College District, GO (Election of 2002), 5% due 5/01/2030 (e) 2,756 2,720 San Diego, California, Redevelopment Agency, Subordinate Tax Allocation Bonds (Centre City Redevelopment Project), Series A, 5.25% due 9/01/2024 (a) 2,907 2,860 San Diego, California, Redevelopment Agency, Subordinate Tax Allocation Bonds (Centre City Redevelopment Project), Series A, 5.25% due 9/01/2025 (a) 3,051 5,400 San Diego, California, Unified Port District, Revenue Refunding Bonds, AMT, Series A, 5.25% due 9/01/2019 (f) 5,713 3,570 San Diego County, California, COP (Salk Institute for Bio Studies), 5.75% due 7/01/2022 (f) 3,862 5,200 San Diego County, California, COP (Salk Institute for Bio Studies), 5.75% due 7/01/2031 (f) 5,602 7,350 San Diego County, California, Water Authority, Water Revenue Bonds, COP, Series A, 5% due 5/01/2030 (e) 7,565 10,000 San Diego County, California, Water Authority, Water Revenue Bonds, COP, Series A, 5% due 5/01/2031 (e) 10,292 5,250 San Francisco, California, Bay Area Rapid Transit District, Sales Tax Revenue Refunding Bonds, RIB, Series 1318-X, 6.14% due 7/01/2034 (f)(h) 5,620 9,630 San Francisco, California, Bay Area Rapid Transit District, Sales Tax Revenue Refunding Bonds, Series A, 5% due 7/01/2030 (f) 9,966 3,000 San Francisco, California, City and County Airport Commission, International Airport Revenue Refunding Bonds, Second Series 28B, 5.25% due 5/01/2023 (f) 3,167 6,455 San Francisco, California, City and County Airport Commission, International Airport Revenue Refunding Bonds, Second Series 28B, 5.25% due 5/01/2024 (f) 6,814 1,000 San Francisco, California, City and County Airport Commission, International Airport, Special Facilities Lease Revenue Bonds (SFO Fuel Company LLC), AMT, Series A, 6.10% due 1/01/2020 (e) 1,049 985 San Francisco, California, City and County Airport Commission, International Airport, Special Facilities Lease Revenue Bonds (SFO Fuel Company LLC), AMT, Series A, 6.125% due 1/01/2027 (e) 1,034 1,735 San Francisco, California, Community College District, GO, Refunding, Series A, 5.375% due 6/15/2019 (b) 1,856 1,730 San Francisco, California, Community College District, GO, Refunding, Series A, 5.375% due 6/15/2020 (b) 1,851 1,925 San Francisco, California, Community College District, GO, Refunding, Series A, 5.375% due 6/15/2021 (b) 2,054 4,135 San Jose, California, Airport Revenue Bonds, Series D, 5% due 3/01/2028 (f) 4,248 5,700 San Jose, California, Financing Authority, Lease Revenue Refunding Bonds, DRIVERS, Series 1280Z, 6.051% due 12/01/2010 (a)(h) 5,957 3,650 San Jose, California, Redevelopment Agency, Tax Allocation Bonds, RIB, AMT, Series 149, 7.74% due 8/01/2027 (f)(h) 3,927 4,250 San Juan, California, Unified School District, GO (Election of 2002), 5% due 8/01/2028 (f) 4,379 4,350 San Mateo County, California, Transit District, Sales Tax Revenue Refunding Bonds, Series A, 5% due 6/01/2029 (f) 4,507 2,595 Santa Clara, California, Redevelopment Agency, Tax Allocation Bonds (Bayshore North Project), Series A, 5.25% due 6/01/2019 (a) 2,711 5,500 Santa Clara, California, Subordinated Electric Revenue Bonds, Series A, 5% due 7/01/2028 (f) 5,665 1,100 Santa Clara Valley, California, Water District, Water Utility System Revenue, Series A, 5.125% due 6/01/2031 (b) 1,131 3,000 Santa Rosa, California, High School District, GO, 5.375% due 8/01/2026 (e) 3,174 2,500 Santa Rosa, California, High School District, GO (Election of 2002), 5% due 8/01/2028 (f) 2,576 6,750 Shasta, California, Joint Powers Financing Authority, Lease Revenue Bonds (County Administration Building Project), Series A, 5% due 4/01/2033 (f) 6,919 1,645 South Tahoe, California, Joint Powers Financing Authority, Revenue Refunding Bonds (South Tahoe Redevelopment Project Area Number 1), Series A, 5% due 10/01/2029 (e) 1,690 5,000 Southern California Public Power Authority, Power Project Revenue Bonds (Magnolia Power Project), Series A-1, 5% due 7/01/2033 (a) 5,129 2,600 Stockton, California, Public Financing Authority, Water Revenue Bonds (Water System Capital Improvement Projects), Series A, 5% due 10/01/2031 (f) 2,693 1,055 Stockton, California, Public Financing Revenue Refunding Bonds, Series A, 5.875% due 9/02/2016 (e) 1,057 2,315 Sweetwater, California, Union High School District, Public Financing Authority, Special Tax Revenue Bonds, Series A, 5% due 9/01/2029 (e) 2,381 1,500 Tehachapi, California, COP, Refunding (Installment Sale), 5.75% due 11/01/2016 (e) 1,651 6,000 Tracy, California, Community Development Agency, Tax Allocation Refunding Bonds, Series A, 5% due 3/01/2034 (a) 6,124 3,000 Turlock, California, Public Finance Authority, Sewer Revenue Bonds, Series A, 5% due 9/15/2033 (b) 3,085 8,720 University of California Revenue Bonds (Multiple Purpose Projects), Series Q, 5% due 9/01/2024 (e) 9,034 6,110 University of California Revenue Bonds (Multiple Purpose Projects), Series Q, 5% due 9/01/2033 (e) 6,290 4,790 University of California Revenue Bonds, Series O, 5.125% due 9/01/2031 (b) 4,946 3,395 Ventura County, California, Community College District, GO, Refunding, Series A, 5% due 8/01/2027 (f) 3,500 2,550 Vista, California, Unified School District, GO, Series B, 5% due 8/01/2028 (b) 2,627 2,185 Walnut, California, Public Financing Authority, Tax Allocation Revenue Bonds (Walnut Improvement Project), 5.375% due 9/01/2021 (a) 2,326 6,690 West Contra Costa, California, Unified School District, GO (Election of 2002), Series B, 5% due 8/01/2032 (e) 6,855 Puerto Rico - 8.5% 20,000 Puerto Rico Commonwealth Infrastructure Financing Authority, Special Tax and Capital Appreciation Revenue Bonds, Series A, 4.56% due 7/01/2029 (a)(n) 6,758 4,335 Puerto Rico Commonwealth, Public Improvement, GO, 5.75% due 7/01/2010 (f)(g) 4,645 10,000 Puerto Rico Municipal Finance Agency, GO, RIB, Series 225, 7.58% due 8/01/2012 (e)(h) 11,310 20,000 Puerto Rico Public Finance Corporation, Commonwealth Appropriation Revenue Bonds, Series E, 5.75% due 2/01/2007 (g) 20,211 Total Municipal Bonds (Cost - $746,348) - 151.5% 764,186 Shares Held Short-Term Securities 13,254 CMA California Municipal Money Fund, 3.07% (l)(m) 13,254 Total Short-Term Securities (Cost - $13,254) - 2.6% 13,254 Total Investments (Cost - $759,602*) - 154.1% 777,440 Other Assets Less Liabilities - 0.5% 2,204 Preferred Stock, at Redemption Value - (54.6%) (275,250) ----------- Net Assets Applicable to Common Stock - 100.0% $ 504,394 =========== * The cost and unrealized appreciation (depreciation) of investments as of July 31, 2006, as computed for federal income tax purposes, were as follows: Aggregate cost $ 759,602 ================== Gross unrealized appreciation $ 20,229 Gross unrealized depreciation (2,391) ------------------ Net unrealized appreciation $ 17,838 ================== (a) AMBAC Insured. (b) FGIC Insured. (c) FHLMC Collateralized. (d) FNMA/GNMA Collateralized. (e) FSA Insured. (f) MBIA Insured. (g) Prerefunded. (h) The rate disclosed is that currently in effect. This rate changes periodically and inversely based upon prevailing market rates. (i) Security may have a maturity of more than one year at time of issuance, but has variable rate and demand features that qualify it as a short-term security. The rate disclosed is that currently in effect. This rate changes periodically based upon prevailing market rates. (j) Escrowed to maturity. (k) XL Capital Insured. (l) 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: Net Dividend Affiliate Activity Income CMA California Municipal Money Fund 13,247 $96 (m) Represents the current yield as of July 31, 2006. (n) Represents a zero coupon bond; the interest rate shown is the effective yield at the time of purchase. 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 California Insured Fund, Inc. By: /s/ Robert C. Doll, Jr. ----------------------- Robert C. Doll, Jr. Chief Executive Officer MuniYield California Insured Fund, Inc. Date: September 20, 2006 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 MuniYield California Insured Fund, Inc. Date: September 20, 2006 By: /s/ Donald C. Burke ----------------------- Donald C. Burke Chief Financial Officer MuniYield California Insured Fund, Inc. Date: September 20, 2006