UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM N-CSRS CERTIFIED SHAREHOLDER REPORT OF REGISTERED MANAGEMENT INVESTMENT COMPANIES Investment Company Act file number 811-8707 Name of Fund: MuniHoldings Insured Fund, Inc. Fund Address: P.O. Box 9011 Princeton, NJ 08543-9011 Name and address of agent for service: Terry K. Glenn, President, MuniHoldings 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: 04/30/04 Date of reporting period: 05/01/03 - 10/31/03 Item 1 - Attach shareholder report (BULL LOGO) Merrill Lynch Investment Managers www.mlim.ml.com MuniHoldings Insured Fund, Inc. Semi-Annual Report October 31, 2003 MuniHoldings Insured Fund, Inc. seeks to provide shareholders with current income exempt from Federal income taxes by investing primarily in a portfolio of long-term, investment-grade municipal obligations the interest on which, in the opinion of bond counsel to the issuer, is exempt from Federal income taxes. Under normal circumstances, the Fund invests at least 80% of its total assets in municipal bonds that are covered by insurance. This report, including the financial information herein, is transmitted to shareholders of MuniHoldings Insured Fund, Inc. for their information. It is not a prospectus. Past performance results shown in this report should not be considered a representation of future performance. The Fund has leveraged its Common Stock and intends to remain leveraged by issuing Preferred Stock to provide the Common Stock shareholders with a potentially higher rate of return. Leverage creates risks for Common Stock shareholders, including the likelihood of greater volatility of net asset value and market price of shares of the Common Stock, and the risk that fluctuations in the short-term dividend rates of the Preferred Stock may affect the yield to Common Stock shareholders. Statements and other information herein are as dated and are subject to change. MuniHoldings Insured Fund, Inc. Box 9011 Princeton, NJ 08543-9011 MuniHoldings Insured Fund, Inc. The Benefits and Risks of Leveraging MuniHoldings Insured Fund, Inc. has the ability to leverage to seek to enhance the yield and net asset value of its Common Stock. However, these objectives cannot be achieved in all interest rate environments. To leverage, the Fund issues Preferred Stock, which pays dividends at prevailing short-term interest rates, and invests the proceeds in long-term municipal bonds. The interest earned on these investments is paid to Common Stock shareholders in the form of dividends, and the value of these portfolio holdings is reflected in the per share net asset value of the Fund's Common Stock. However, in order to benefit Common Stock shareholders, the yield curve must be positively sloped; that is, short-term interest rates must be lower than long-term interest rates. At the same time, a period of generally declining interest rates will benefit Common Stock shareholders. If either of these conditions change, then the risks of leveraging will begin to outweigh the benefits. To illustrate these concepts, assume a fund's Common Stock capitalization of $100 million and the issue of Preferred Stock for an additional $50 million, creating a total value of $150 million available for investment in long-term municipal bonds. If prevailing short-term interest rates are approximately 3% and long-term interest rates are approximately 6%, the yield curve has a strongly positive slope. The fund pays dividends on the $50 million of Preferred Stock based on the lower short-term interest rates. At the same time, the fund's total portfolio of $150 million earns the income based on long-term interest rates. Of course, increases in short-term interest rates would reduce (and even eliminate) the dividends on the Common Stock. In this case, the dividends paid to Preferred Stock shareholders are significantly lower than the income earned on the fund's long-term investments, and therefore the Common Stock shareholders are the beneficiaries of the incremental yield. However, if short-term interest rates rise, narrowing the differential between short-term and long-term interest rates, the incremental yield pickup on the Common Stock will be reduced or eliminated completely. At the same time, the market value on the fund's Common Stock (that is, its price as listed on the New York Stock Exchange), may, as a result, decline. Furthermore, if long-term interest rates rise, the Common Stock's net asset value will reflect the full decline in the price of the portfolio's investments, since the value of the fund's Preferred Stock does not fluctuate. In addition to the decline in net asset value, the market value of the fund's Common Stock may also decline. As a part of its investment strategy, the Fund may invest in certain securities whose potential income return is inversely related to changes in a floating interest rate ("inverse floaters"). In general, income on inverse floaters will decrease when short-term interest rates increase and increase when short-term interest rates decrease. Investments in inverse floaters may be characterized as derivative securities and may subject the Fund to the risks of reduced or eliminated interest payments and losses of invested principal. In addition, inverse floaters have the effect of providing investment leverage and, as a result, the market value of such securities will generally be more volatile than that of fixed-rate, tax-exempt securities. To the extent the Fund invests in inverse floaters, the market value of the Fund's portfolio and the net asset value of the Fund's shares may also be more volatile than if the Fund did not invest in these securities. As of October 31, 2003, the percentage of the Fund's total net assets invested in inverse floaters was .65%. Swap Agreements The Fund may also invest in swap agreements, which are over-the- counter contracts in which one party agrees to make periodic payments based on the change in market value of a specified bond, basket of bonds, or index in return for periodic payments based on a fixed or variable interest rate or the change in market value of a different bond, basket of bonds or index. Swap agreements may be used to obtain exposure to a bond or market without owning or taking physical custody of securities. MUNIHOLDINGS INSURED FUND, INC., OCTOBER 31, 2003 A Letter From the President Dear Shareholder As 2003 draws to a close, it seems appropriate to reflect on what has been a meaningful year in many respects. We saw the beginning and the end of all-out war in Iraq, equity market uncertainty turned to strength and sub par gross domestic product growth of 1.4% in the first quarter of 2003 grew to an extraordinary 8.2% in the third quarter. Amid the good news, fixed income investments, which had become the asset class of choice during the preceding three-year equity market decline, faced new challenges. During 2003, municipal bond yields rose and fell in reaction to geopolitical events, equity market performance, economic activity and employment figures. By the end of October, long-term municipal revenue bond yields were slightly higher than they were one year earlier, at 5.24% as measured by the Bond Buyer Revenue Bond Index. With many state deficits at record levels, municipalities issued nearly $400 billion in new long-term tax-exempt bonds during the 12-month period ended October 31, 2003. The availability of bonds, together with attractive yield ratios relative to U.S. Treasury issues, made municipal bonds a popular fixed income investment alternative. Throughout the year, our portfolio managers continued to work diligently to deliver on our commitment to provide superior performance within reasonable expectations for risk and return. This included striving to outperform our peers and the market indexes. With that said, remember that the advice and guidance of a skilled financial advisor often can mean the difference between successful and unsuccessful investing. A financial professional can help you choose those investments that will best serve you as you plan for your financial future. Finally, I am proud to premiere a new look to our shareholder communications. Our portfolio manager commentaries have been trimmed and organized in such a way that you can get the information you need at a glance, in plain language. Today's markets are confusing enough. We want to help you put it all in perspective. The report's new size also allows us certain mailing efficiencies. Any cost savings in production or postage are passed on to the Fund and, ultimately, to Fund shareholders. We thank you for trusting Merrill Lynch Investment Managers with your investment assets, and we look forward to serving you in the months and years ahead. Sincerely, (Terry K. Glenn) Terry K. Glenn President and Director MUNIHOLDINGS INSURED FUND, INC., OCTOBER 31, 2003 A Discussion With Your Fund's Portfolio Manager The Fund outperformed its comparable Lipper category for the period and was effectively able to enhance yield while preserving net asset value in a volatile interest rate environment. Describe the market environment relative to municipal bonds during the period. At the end of October, long-term tax-exempt bond yields were 90% - 95% of comparable U.S. Treasury securities, substantially exceeding their historical average of 85% - 88%. Considering their tax-free status, this made long-term municipal bonds an attractive investment alternative during the past six months. Long-term U.S. Treasury bond yields moved higher during the period, supported by generally stronger economic activity. Gross domestic product growth in the third quarter of 2003 was revised to 8.2%, the fastest rate seen in more than 20 years and well above the 1.4% registered in the first quarter of the year. Also responding to the overall more positive financial environment, the Standard & Poor's 500 Index rose almost 15% during the period, putting considerable pressure on interest rates. Long-term U.S. Treasury bond yields stood at 5.13% at the end of October 2003, an increase of 37 basis points (.37%) over the past six months. Tax-exempt bond yields generally followed their taxable counterparts higher during the period. As reported by Municipal Market Data, Aaa-rated issues maturing in 30 years rose approximately 20 basis points over the six months to 4.82%. Long-term tax-exempt revenue bond yields, as measured by the Bond Buyer Revenue Bond Index, increased 15 basis points to 5.24% over the same period. With tax- exempt money market rates below 1% and generally low municipal bond yields, many investors opted to move further out on the municipal yield curve to generate the desired level of tax-exempt income. This maturity extension has supported the strong demand and performance shown by tax-exempt products in recent months. The municipal market's outperformance of the U.S. Treasury market during the period has been especially impressive given the dramatic increase in new bond issuance. Historically low interest rates over the past year have been used by state and local governments as an opportunity to finance existing infrastructure needs and refinance outstanding, higher-couponed issues. During the past 12 months, municipalities issued nearly $400 billion in new securities, an increase of more than 12% compared to last year's issuance. More recently, new municipal bond issuance has slowed largely in response to the recent rise in tax-exempt bond yields. Over the past three months, less than $90 billion in long-term tax-exempt bonds was underwritten, a decline of nearly 10% versus the same three months of 2002. This recent decline in supply has helped support the tax- exempt market's positive technical position and recent performance. How did the Fund perform during the period in light of the existing market conditions? For the six-month period ended October 31, 2003, the Common Stock of MuniHoldings Insured Fund, Inc. had a net annualized yield of 6.07%, based on a period-end per share net asset value of $14.32 and $.438 per share income dividends. Over the same period, the total investment return on the Fund's Common Stock was +2.16%, based on a change in per share net asset value from $14.48 to $14.32, and assuming reinvestment of $.438 per share ordinary income dividends. For the six-month period ended October 31, 2003, the Fund's Auction Market Preferred Stock had an average yield of .84% for Series A and ..88% for Series B. For a description of the Fund's total investment return based on a change in the per share market value of the Fund's Common Stock (as measured by the trading price of the Fund's shares on the New York Stock Exchange), and assuming reinvestment of dividends, please refer to the Financial Highlights section of the Financial Statements included in this report. As a closed-end fund, the Fund's shares may trade in the secondary market at a premium or discount to the Fund's net asset value. As a result, total investment returns based on changes in the market value of the Fund's Common Stock can vary significantly from total investment return based on changes in the Fund's net asset value. The Fund's performance, based on net asset value, exceeded its comparable Lipper category of Insured Municipal Debt Funds (Leveraged), which had an average return of +1.13% for the six-month period ended October 31, 2003. The portfolio's slightly defensive posturing in a very volatile interest rate environment served to benefit performance during the period. Our strategy was to avoid those areas of the yield curve that were demonstrating the most volatility, particularly the ten-year and shorter areas of the curve, and to move further out on the curve to the 20-year range and longer. This not only shielded the Fund from much of the volatility but also helped to augment yield. MUNIHOLDINGS INSURED FUND, INC., OCTOBER 31, 2003 Also benefiting performance during the past six months was our strategic approach to the California municipal bond market. A combination of heavy supply, negative budgetary news and the gubernatorial recall caused California bonds to become very inexpensive on a relative basis. We viewed this as an opportunity and increased the Fund's exposure to the California market. With the heavy issuance out of the way and the uncertainty of the governor recall eliminated, spreads on California bonds narrowed and the Fund benefited. We also made full use of our uninsured basket during the period in an effort to enhance performance. The Fund is permitted to invest up to 20% of net assets in uninsured bonds. These types of credits typically outperform when interest rates start to rise and the economy begins to strengthen. This outperformance comes from a general rise in credit strength and a reduction in the risk premium commanded on such securities, causing the spread required on these issues to narrow. Therefore, in anticipation of an improving economy, we increased our uninsured basket close to its full allotment about a year ago. As economic conditions improved over the past six months, this unenhanced portion of the portfolio performed very well on a relative basis, contributing to the Fund's overall outperformance for the period. What changes were made to the portfolio during the period? As mentioned earlier, we strategically shifted in and out of the California market during the past six months as opportunities presented themselves. At the close of the period, we remained modestly overweight in California bonds. Because the California market is still somewhat inexpensive on a relative basis, we believe this area of the portfolio should perform well over time. Although there could be some intermittent weakness due to the ongoing budgetary shortfall, we would probably again increase our position in California upon such weakness. We believe this would create another opportunity for the Fund to gain exposure to a sector with good relative value that should perform well over time. Another change involved some shifting of the portfolio's uninsured basket. One year ago, we increased some of the health care-related issues in the portfolio as we observed wide credit spreads, primarily due to an abundance of supply. We have since started to reduce these positions as the credit spreads began to tighten considerably. The goal again was to lock in gains on the outperformance. We were cognizant to maintain a fully invested portfolio throughout the period to enhance the Fund's distribution yield. We also aimed to mute the volatility of the portfolio by participating in the swap market. This helped to reduce the portfolio's duration temporarily in case of interest rate spikes. During the period, the Fund's borrowing costs generally remained in the .75% - 1.25% range. These attractive funding levels, in combination with a steep tax-exempt yield curve, generated a significant income benefit to the Fund's Common Stock shareholders. Further declines in the Fund's borrowing costs would require significant easing of monetary policy by the Federal Reserve Board. While such action is not expected, neither is an imminent increase in short-term interest rates. We expect short-term borrowing costs to remain near current attractive levels for the coming months. However, should the spread between short-term and long-term interest rates narrow, the benefits of leverage will decline, and as a result, reduce the yield on the Fund's Common Stock. (For a more complete explanation of the benefits and risks of leveraging, see page 2 of this report to shareholders.) How would you characterize the portfolio's position at the close of the period? We remained fully invested at the close of the period and defensively structured. In our opinion, the economy is on track for continued growth, which we expect should push interest rates higher over time. We have been positioning the portfolio slightly more defensively as the market has rallied, particularly in September, in an effort to maintain our competitive yield and to protect the portfolio from any increase in interest rates. Robert A. DiMella Vice President and Portfolio Manager December 1, 2003 MUNIHOLDINGS INSURED FUND, INC., OCTOBER 31, 2003 Proxy Results During the six-month period ended October 31, 2003, MuniHoldings Insured Fund, Inc.'s Common Stock shareholders voted on the following proposal. The proposal was approved at a shareholders' meeting on August 25, 2003. A description of the proposal and number of shares voted are as follows: Shares Voted Shares Withheld For From Voting 1. To elect the Fund's Directors: Terry K. Glenn 12,407,955 334,055 Ronald W. Forbes 12,406,555 335,455 Cynthia A. Montgomery 12,402,265 339,745 Kevin A. Ryan 12,397,084 344,926 Roscoe S. Suddarth 12,399,199 342,811 Edward D. Zinbarg 12,397,934 344,076 During the six-month period ended October 31, 2003, MuniHoldings Insured Fund, Inc.'s Preferred Stock (Series A & B) shareholders voted on the following proposal. The proposal was approved at a shareholders' meeting on August 25, 2003. A description of the proposal and number of shares voted are as follows: Shares Voted Shares Withheld For From Voting 1. To elect the Fund's Board of Directors: Terry K. Glenn, Ronald W. Forbes, Cynthia A. Montgomery, Charles C. Reilly, Kevin A. Ryan, Roscoe S. Suddarth, Richard R. West and Edward D. Zinbarg 3,791 13 Quality Profile The quality ratings of securities in the Fund as of October 31, 2003 were as follows: Percent of Total S&P Rating/Moody's Rating Investments AAA/Aaa 83.2% AA/Aa 5.6 A/A 2.9 BBB/Baa 4.6 NR (Not Rated) 3.7 MUNIHOLDINGS INSURED FUND, INC., OCTOBER 31, 2003 Schedule of Investments (In Thousands) S&P Moody's Face State Ratings Ratings Amount Municipal Bonds Value Arizona--1.2% NR* Aaa $ 2,000 Arizona Tourism and Sports Authority, Tax Revenue Bonds (Multi-Purpose Stadium Facility), Series A, 5.375% due 7/01/2021 (b) $ 2,144 Arkansas--1.1% NR* Aaa 1,930 University of Arkansas, University Revenue Bonds (Fayetteville Campus), 5.50% due 12/01/2018 (c) 2,118 California-- AAA Aaa 3,250 Brea and Olinda, California, Unified School District, COP, 25.2% Refunding, Series A, 5.125% due 8/01/2026 (f) 3,315 AAA Aaa 3,000 California Infrastructure and Economic Development Bank Revenue Bonds (Bay Area Toll Bridges), 1st Lien, Series A, 5.25% due 7/01/2021 (f) 3,187 AAA Aaa 3,500 California Pollution Control Financing Authority, PCR, Refunding (Pacific Gas & Electric), AMT, Series A, 5.35% due 12/01/2016 (b) 3,738 AAA Aaa 4,000 California State, Department of Water Resources, Power Supply Revenue Bonds, Series A, 5.375% due 5/01/2017 (d) 4,334 California State, GO, Refunding: AAA NR* 5,750 5.25% due 10/01/2020 (d) 6,098 BBB A3 6,800 5.25% due 2/01/2033 6,690 Golden State Tobacco Securitization Corporation of California, Tobacco Settlement Revenue Bonds: BBB Baa2 1,145 Series A-3, 7.875% due 6/01/2042 1,176 BBB- Baa1 4,020 Series B, 5.50% due 6/01/2043 3,816 AAA Aaa 2,000 Los Angeles, California, Unified School District, GO (Election of 1997), Series F, 5% due 7/01/2021 (c) 2,070 AAA Aaa 2,480 Port Oakland, California, Revenue Refunding Bonds, Series M, 5.25% due 11/01/2020 (c) 2,639 AA Aa3 1,750 Sacramento County, California, Sanitation District, Financing Authority Revenue Refunding Bonds, RIB, Series 366, 10.422% due 12/01/2027 (j) 2,053 AAA Aaa 5,000 San Francisco, California, City and County Airport Commission, International Airport, Special Facilities Lease Revenue Bonds (SFO Fuel Company LLC), AMT, Series A, 5.25% due 1/01/2027 (a) 5,060 San Pablo, California, Joint Powers Financing Authority, Tax Allocation Revenue Refunding Bonds (b): AAA Aaa 2,635 5.66%** due 12/01/2024 823 AAA Aaa 2,355 5.66%** due 12/01/2025 694 AAA Aaa 2,355 5.66%** due 12/01/2026 655 Colorado--6.5% Aurora, Colorado, COP (a): AAA Aaa 2,440 5.75% due 12/01/2015 2,759 AAA Aaa 2,560 5.75% due 12/01/2016 2,894 AAA Aaa 2,730 5.75% due 12/01/2017 3,086 AAA Aaa 2,890 5.75% due 12/01/2018 3,255 Connecticut-- AAA Aaa 8,000 Connecticut State HFA Revenue Bonds (Housing Mortgage Program), 7.7% AMT, Series D, 5.15% due 11/15/2022 (b) 8,126 AA Baa3 5,710 Connecticut State Health and Educational Facilities Authority Revenue Refunding Bonds (University of Hartford), Series E, 5.50% due 7/01/2022 (i) 6,074 Florida--1.4% NR* Aaa 2,500 Escambia County, Florida, Health Facilities Authority, Health Facility Revenue Bonds (Florida Health Care Facility Loan), 5.95% due 7/01/2020 (a) 2,643 Illinois--22.7% Chicago, Illinois, GO (c): AAA Aaa 5,000 5.50% due 1/01/2021 5,357 AAA Aaa 2,790 Series A, 6% due 1/01/2018 3,184 AAA Aaa 2,000 Series A, 6% due 1/01/2019 2,275 AAA Aaa 3,175 Series A, 6% due 1/01/2020 3,592 Portfolio Abbreviations To simplify the listings of MuniHoldings 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 at right. AMT Alternative Minimum Tax (subject to) COP Certificates of Participation EDA Economic Development Authority GO General Obligation Bonds HDA Housing Development Authority HFA Housing Finance Agency PCR Pollution Control Revenue Bonds RIB Residual Interest Bonds MUNIHOLDINGS INSURED FUND, INC., OCTOBER 31, 2003 Schedule of Investments (continued) (In Thousands) S&P Moody's Face State Ratings Ratings Amount Municipal Bonds Value Illinois AAA Aaa $ 6,780 Chicago, Illinois, Motor Fuel Tax Revenue Refunding Bonds, (concluded) Series A, 5.25% due 1/01/2028 (a) $ 7,003 Chicago, Illinois, O'Hare International Airport, Airport Revenue Bonds, 3rd Lien, AMT, Series B-2: AAA Aaa 4,600 5.75% due 1/01/2023 (f) 4,902 AAA Aaa 4,300 6% due 1/01/2029 (d) 4,668 AAA Aaa 3,500 Chicago, Illinois, Parking District, GO, Series A, 5.75% due 1/01/2017 (c) 3,935 BBB NR* 1,760 Illinois, Development Finance Authority Revenue Bonds (Community Rehabilitation Providers Facilities), Series A, 6.625% due 7/01/2032 1,804 AAA Aaa 4,500 Illinois State, GO, First Series, 6% due 1/01/2018 (c) 5,116 AAA Aaa 45 Lake, Cook, Kane and McHenry Counties, Illinois, Community United School District, GO, 5.75% due 12/01/2019 (c) 50 Kentucky--2.6% AAA Aa3 4,380 Fayette County, Kentucky, School District Finance Corporation, School Building Revenue Bonds, 5.50% due 9/01/2019 (b) 4,794 Louisiana--0.7% NR* Aaa 1,250 Louisiana Local Government, Environmental Facilities, Community Development Authority, Mortgage Revenue Refunding Bonds (Sharlo Apartments), Series A, 6.50% due 6/20/2037 (g)(h) 1,368 Maine--0.5% AA+ Aa1 850 Maine State Housing Authority, Mortgage Revenue Bonds, AMT, Series F-2, 5.25% due 11/15/2032 855 Massachusetts-- AAA Aaa 1,770 Massachusetts State, GO, Refunding, Consolidated Loan, Series D, 1.0% 5.375% due 8/01/2022 (b) 1,880 Michigan--4.7% AAA Aaa 2,035 Boyne City, Michigan, Public School District, GO, 5.75% due 5/01/2017 (c) 2,298 Michigan State Strategic Fund, Limited Obligation Revenue Refunding Bonds, AMT (d): AAA Aaa 1,200 (Detroit Edison Company Project), Series A, 5.50% due 6/01/2030 1,239 AAA Aaa 3,500 (Detroit Edison Company Project), Series C, 5.65% due 9/01/2029 3,643 AAA Aaa 1,500 (Detroit Edison Pollution), Series B, 5.65% due 9/01/2029 1,561 Minnesota--2.4% NR* Aaa 4,015 Sauk Rapids, Minnesota, Independent School District Number 47, GO, Series A, 5.65% due 2/01/2019 (b) 4,463 Mississippi-- BBB- Ba1 2,000 Mississippi Business Finance Corporation, Mississippi, PCR, 1.1% Refunding (System Energy Resources Inc. Project), 5.875% due 4/01/2022 1,988 Missouri--7.7% AAA Aaa 2,000 Cape Girardeau, Missouri, School District Number 063, GO Missouri Direct Deposit Program), 5.50% due 3/01/2018 (c) 2,200 Mehlville, Missouri, School District Number R-9, COP (f): AAA Aaa 1,570 (Missouri Capital Improvement Projects), 5.50% due 9/01/2015 1,741 AAA Aaa 2,610 (Missouri Capital Improvement Projects), 5.50% due 9/01/2018 2,848 AAA Aaa 1,925 Series A, 5.50% due 3/01/2014 2,130 AAA Aaa 2,175 Series A, 5.50% due 3/01/2015 2,407 AAA Aaa 1,170 Series A, 5.50% due 3/01/2016 1,294 AAA Aaa 1,500 Series A, 5.50% due 3/01/2017 1,651 Nebraska--2.1% Omaha Convention Hotel Corporation, Nebraska, Convention Center Revenue Bonds, First Tier, Series A (a): AAA Aaa 1,585 5.50% due 4/01/2020 1,717 AAA Aaa 2,000 5.50% due 4/01/2021 2,158 Nevada--2.5% AAA Aaa 4,000 Las Vegas New Convention and Visitors Authority Revenue Bonds, 5.75% due 7/01/2018 (a) 4,514 New Hampshire-- AAA Aaa 2,250 New Hampshire Health and Education Facilities Authority Revenue 1.3% Bonds (University System of New Hampshire), 5.375% due 7/01/2020 (a) 2,423 New Jersey--10.2% AAA Aaa 5,000 New Jersey EDA, Water Facilities Revenue Refunding Bonds (American Water), AMT, Series B, 5.125% due 4/01/2022 (a) 5,087 AA- Aaa 2,750 New Jersey State Highway Authority, Garden State Parkway General Revenue Refunding Bonds, 6% due 1/01/2019 (e) 3,248 AA- Aa3 3,300 New Jersey State Transportation Trust Fund Authority, Transportation System Revenue Bonds, Series C, 5.50% due 6/15/2015 3,684 AAA Aaa 3,000 New Jersey State Transportation Trust Fund Authority, Transportation System Revenue Refunding Bonds, Series B, 6% due 12/15/2011 (b)(k) 3,571 BBB Baa2 3,460 Tobacco Settlement Financing Corporation of New Jersey Revenue Bonds, 7% due 6/01/2041 3,243 MUNIHOLDINGS INSURED FUND, INC., OCTOBER 31, 2003 Schedule of Investments (continued) (In Thousands) S&P Moody's Face State Ratings Ratings Amount Municipal Bonds Value New York--21.2% AAA Aaa $10,000 Nassau Health Care Corporation, New York, Health System Revenue Bonds, 5.75% due 8/01/2022 (f) $ 11,034 New York City, New York, GO, Refunding: AAA Aaa 6,250 Series C, 5.875% due 2/01/2016 (b) 6,912 AAA Aaa 7,500 Series G, 5.75% due 2/01/2017 (f) 8,150 AAA Aaa 7,085 New York City, New York, GO, Series G, 5.75% due 10/15/2012 (f) 7,997 AAA Aaa 1,665 New York State Dormitory Authority Revenue Bonds (School Districts Financing Program), Series D, 5.25% due 10/01/2023 (b) 1,741 AAA NR* 3,000 Tobacco Settlement Financing Corporation of New York, Revenue Bonds, Series A-1, 5.25% due 6/01/2022 (a) 3,131 Ohio--0.9% AAA Aaa 1,650 Cincinnati, Ohio, City School District, Classroom Facilities Construction & Improvement, GO, 5% due 12/01/2025 (f) 1,673 Oregon--0.9% NR* Aaa 1,400 Portland, Oregon, Urban Renewal and Redevelopment Tax Allocation Bonds (Oregon Convention Center), Series A, 5.75% due 6/15/2015 (a) 1,587 Pennsylvania-- AAA Aaa 6,045 Philadelphia, Pennsylvania, Airport Revenue Bonds (Philadelphia 11.6% Airport System), AMT, Series B, 5.50% due 6/15/2017 (c) 6,445 AAA Aaa 4,930 Philadelphia, Pennsylvania, School District, GO, Series A, 5.25% due 4/01/2015 (b) 5,349 A- NR* 2,430 Sayre, Pennsylvania, Health Care Facilities Authority Revenue Bonds (Guthrie Health Issue), Series B, 5.85% due 12/01/2020 2,534 AAA Aaa 4,250 Washington County, Pennsylvania, Capital Funding Authority Revenue Bonds (Capital Projects and Equipment Program), 6.15% due 12/01/2029 (a) 4,929 NR* Aaa 1,885 York County, Pennsylvania, School of Technology Authority, Lease Revenue Refunding Bonds, 5.50% due 2/15/2022 (c) 2,028 Rhode Island-- NR* Aaa 5,000 Providence, Rhode Island, Redevelopment Agency Revenue Refunding 3.0% Bonds (Public Safety and Municipal Buildings), Series A, 5.75% due 4/01/2019 (a) 5,612 South Carolina-- Tobacco Settlement Revenue Management Authority of South 1.3% Carolina, Tobacco Settlement Revenue Bonds, Series B: BBB Baa2 1,690 6.375% due 5/15/2028 1,487 BBB Baa2 1,000 6.375% due 5/15/2030 871 Tennessee-- Tennessee HDA, Revenue Refunding Bonds (Homeownership Program), 3.4% AMT, Series A (f): AAA Aaa 3,195 5.25% due 7/01/2022 3,270 AAA Aaa 2,935 5.35% due 1/01/2026 2,997 Texas--6.4% A+ Aa3 3,000 Austin, Texas, Convention Center Revenue Bonds (Convention Enterprises Inc.), Trust Certificates, Second Tier, Series B, 6% due 1/01/2023 3,248 AAA Aaa 5,000 Dallas-Fort Worth, Texas, International Airport Revenue Bonds, AMT, Series A, 5.50% due 11/01/2033 (b) 5,175 AAA NR* 3,050 Houston, Texas, Community College System, Participation Interests, COP (Alief Center Project), 5.75% due 8/15/2022 (b) 3,328 Virginia--5.4% Virginia State HDA, Commonwealth Mortgage Revenue Bonds (b): AAA Aaa 1,000 AMT, Series C, Sub-Series C-2, 5.45% due 7/01/2023 1,025 AAA Aaa 8,615 Series J, Sub-Series J-1, 5.20% due 7/01/2019 8,901 Washington-- AAA Aaa 1,655 Chelan County, Washington, Public Utility District Number 001, 3.5% Consolidated Revenue Bonds (Chelan Hydro System), AMT, Series A, 5.45% due 7/01/2037 (a) 1,691 AAA Aaa 2,710 King County, Washington, Sewer Revenue Refunding Bonds, Series B, 5.50% due 1/01/2027 (f) 2,861 AAA Aaa 1,810 Snohomish County, Washington, Public Utility District Number 001, Electric Revenue Bonds, 5.50% due 12/01/2022 (f) 1,948 West Virginia-- AAA Aaa 5,000 West Virginia State Housing Development Fund, Housing Finance 2.8% Revenue Refunding Bonds, Series D, 5.20% due 11/01/2021 (b) 5,127 Wyoming--0.9% AA NR* 1,500 Wyoming Student Loan Corporation, Student Loan Revenue Refunding Bonds, Series A, 6.20% due 6/01/2024 1,592 Total Municipal Bonds (Cost--$286,632)--163.9% 301,981 MUNIHOLDINGS INSURED FUND, INC., OCTOBER 31, 2003 Schedule of Investments (concluded) (In Thousands) Shares Held Short-Term Securities Value 11,421 Merrill Lynch Institutional Tax-Exempt Fund (l) $ 11,421 Total Short-Term Securities (Cost--$11,421)--6.2% 11,421 Total Investments (Cost--$298,053)--170.1% 313,402 Unrealized Depreciation on Forward Interest Rate Swaps***--(0.4%) (654) Other Assets Less Liabilities--3.0% 5,488 Preferred Stock, at Redemption Value--(72.7%) (134,011) --------- Net Assets Applicable to Common Stock--100.0% $ 184,225 ========= (a)AMBAC Insured. (b)MBIA Insured. (c)FGIC Insured. (d)XL Capital Insured. (e)Escrowed to maturity. (f)FSA Insured. (g)GNMA Collateralized. (h)FHA Insured. (i)Radian Insured. (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 October 31, 2003. (k)Prerefunded. (l)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) are as follows: (in Thousands) Net Dividend Affiliate Activity Income Merrill Lynch Institutional Tax-Exempt Fund $3,900 $30 *Not Rated. **Represents a zero coupon bond; the interest rate shown reflects the effective yield at the time of purchase by the Fund. ***Forward interest rate swaps entered into as of October 31, 2003 were as follows: (in Thousands) Unrealized Notional Appreciation Amount (Depreciation) Receive a variable rate equal to 7-Day Bond Market Association Municipal Swap Index Rate and pay a fixed rate equal to 4.511% Broker, J.P. Morgan Chase Bank Expires December 2023 $30,000 $ (1,017) Receive a variable rate equal to 3-Month LIBOR and pay a fixed rate equal to 4.48% Broker, Morgan Stanley Capital Services, Inc. Expires December 2013 $16,000 363 ---------- Total $ (654) ========== See Notes to Financial Statements. MUNIHOLDINGS INSURED FUND, INC., OCTOBER 31, 2003 Statement of Net Assets As of October 31, 2003 Assets Investments, at value (identified cost--$298,052,643) $ 313,402,291 Cash 79,376 Receivables: Interest $ 4,783,218 Securities sold 912,700 Dividends from affiliates 275 5,696,193 --------------- Prepaid expenses 1,878 --------------- Total assets 319,179,738 --------------- Liabilities Unrealized depreciation on forward interest rate swaps 653,748 Payables: Investment adviser 148,553 Dividends to Common Stock shareholders 126,857 Other affiliates 5,650 281,060 --------------- Accrued expenses 9,133 --------------- Total liabilities 943,941 --------------- Preferred Stock Preferred Stock, at redemption value, par value $.10 per share (2,680 Series A shares and 2,680 Series B shares of AMPS* issued and outstanding at $25,000 per share liquidation preference) 134,010,613 --------------- Net Assets Applicable to Common Stock Net assets applicable to Common Stock $ 184,225,184 =============== Analysis of Net Assets Applicable to Common Stock Common Stock, par value $.10 per share (12,867,541 shares issued and outstanding) $ 1,286,754 Paid-in capital in excess of par 190,198,389 Undistributed investment income--net $ 3,310,348 Accumulated realized capital losses on investments--net (25,266,207) Unrealized appreciation on investments--net 14,695,900 --------------- Total accumulated losses--net (7,259,959) --------------- Total--Equivalent to $14.32 net asset value per share of Common Stock (market price--$13.22) $ 184,225,184 =============== *Auction Market Preferred Stock. See Notes to Financial Statements. MUNIHOLDINGS INSURED FUND, INC., OCTOBER 31, 2003 Statement of Operations For the Six Months Ended October 31, 2003 Investment Income Interest $ 7,953,931 Dividends from affiliates 29,597 --------------- Total income 7,983,528 --------------- Expenses Investment advisory fees $ 890,524 Commission fees 173,391 Accounting services 58,941 Professional fees 34,779 Transfer agent fees 24,560 Printing and shareholder reports 21,942 Directors' fees and expenses 18,014 Listing fees 14,770 Custodian fees 9,514 Pricing fees 6,189 Other 16,967 --------------- Total expenses before waiver and reimbursement 1,269,591 Waiver and reimbursement of expenses (95,086) --------------- Total expenses after waiver and reimbursement 1,174,505 --------------- Investment income--net 6,809,023 --------------- Realized & Unrealized Gain (Loss) on Investments--Net Realized gain on investments--net 4,847,779 Change in unrealized appreciation on investments--net (7,582,676) --------------- Total realized and unrealized loss on investments--net (2,734,897) --------------- Dividends to Preferred Stock Shareholders Investment income--net (584,803) --------------- Net Increase in Net Assets Resulting from Operations $ 3,489,323 =============== See Notes to Financial Statements. MUNIHOLDINGS INSURED FUND, INC., OCTOBER 31, 2003 Statements of Changes in Net Assets For the Six For the Months Ended Year Ended October 31, April 30, Increase (Decrease) in Net Assets: 2003 2003 Operations Investment income--net $ 6,809,023 $ 13,675,109 Realized gain (loss) on investments--net 4,847,779 (2,336,371) Change in unrealized appreciation on investments--net (7,582,676) 10,263,841 Dividends to Preferred Stock shareholders (584,803) (1,650,076) --------------- --------------- Net increase in net assets resulting from operations 3,489,323 19,952,503 --------------- --------------- Dividends to Common Stock Shareholders Investment income--net (5,635,983) (10,866,639) --------------- --------------- Net decrease in net assets resulting from dividends to Common Stock shareholders (5,635,983) (10,866,639) --------------- --------------- Net Assets Applicable to Common Stock Total increase (decrease) in net assets applicable to Common Stock (2,146,660) 9,085,864 Beginning of period 186,371,844 177,285,980 --------------- --------------- End of period* $ 184,225,184 $ 186,371,844 =============== =============== *Undistributed investment income--net $ 3,310,348 $ 2,722,111 =============== =============== See Notes to Financial Statements. MUNIHOLDINGS INSURED FUND, INC., OCTOBER 31, 2003 Financial Highlights The following per share data and ratios have been derived For the Six from information provided in the financial statements. Months Ended October 31, For the Year Ended April 30, Increase (Decrease) in Net Asset Value: 2003 2003 2002 2001++++ 2000++++ Per Share Operating Performance Net asset value, beginning of period $ 14.48 $ 13.78 $ 13.29 $ 12.29 $ 15.25 ---------- ---------- ---------- ---------- ---------- Investment income--net .53+++++ 1.06+++++ 1.07 1.14 1.17 Realized and unrealized gain (loss) on investments--net (.20) .62 .44 1.01 (2.82) Dividends to Preferred Stock shareholders from: Investment income--net (.05) (.13) (.21) (.41) (.36) In excess of realized gain on investments--net -- -- -- -- (.03) ---------- ---------- ---------- ---------- ---------- Total from investment operations .28 1.55 1.30 1.74 (2.04) ---------- ---------- ---------- ---------- ---------- Less dividends and distributions to Common Stock shareholders: Investment income--net (.44) (.85) (.81) (.74) (.83) In excess of realized gain on investments--net -- -- -- -- (.09) ---------- ---------- ---------- ---------- ---------- Total dividends and distributions to Common Stock shareholders (.44) (.85) (.81) (.74) (.92) ---------- ---------- ---------- ---------- ---------- Net asset value, end of period $ 14.32 $ 14.48 $ 13.78 $ 13.29 $ 12.29 ========== ========== ========== ========== ========== Market price per share, end of period $ 13.22 $ 13.50 $ 12.65 $ 12.89 $ 11.00 ========== ========== ========== ========== ========== Total Investment Return** Based on market price per share 1.16%+++ 13.79% 4.38% 24.67% (17.87%) ========== ========== ========== ========== ========== Based on net asset value per share 2.16%+++ 12.04% 10.28% 15.05% (13.13%) ========== ========== ========== ========== ========== Ratios Based on Average Net Assets of Common Stock Total expenses, net of waiver and reimbursement++ 1.25%* 1.28% 1.30% 1.15% 1.28% ========== ========== ========== ========== ========== Total expenses++ 1.35%* 1.38% 1.39% 1.44% 1.39% ========== ========== ========== ========== ========== Total investment income--net++ 7.24%* 7.55% 7.75% 8.71% 8.87% ========== ========== ========== ========== ========== Amount of dividends to Preferred Stock shareholders .62%* .91% 1.50% 3.14% 2.74% ========== ========== ========== ========== ========== Investment income--net, to Common Stock shareholders 6.62%* 6.64% 6.25% 5.57% 6.13% ========== ========== ========== ========== ========== Ratios Based on Average Net Assets of Common & Preferred Stock++ Total expenses, net of waiver and reimbursement .72%* .74% .74% .64% .71% ========== ========== ========== ========== ========== Total expenses .78%* .80% .79% .80% .77% ========== ========== ========== ========== ========== Total investment income--net 4.19%* 4.34% 4.41% 4.84% 4.93% ========== ========== ========== ========== ========== MUNIHOLDINGS INSURED FUND, INC., OCTOBER 31, 2003 Financial Highlights (concluded) The following per share data and ratios have been derived For the Six from information provided in the financial statements. Months Ended October 31, For the Year Ended April 30, Increase (Decrease) in Net Asset Value: 2003 2003 2002 2001++++ 2000++++ Ratios Based on Average Net Assets of Preferred Stock Dividends to Preferred Stock shareholders .86%* 1.23% 1.99% 3.94% 3.42% ========== ========== ========== ========== ========== Supplemental Data Net assets applicable to Common Stock, end of period (in thousands) $ 184,225 $ 186,372 $ 177,286 $ 171,007 $ 158,094 ========== ========== ========== ========== ========== Preferred Stock outstanding, end of period (in thousands) $ 134,000 $ 134,000 $ 134,000 $ 134,000 $ 134,000 ========== ========== ========== ========== ========== Portfolio turnover 23.49% 49.59% 49.69% 94.80% 189.96% ========== ========== ========== ========== ========== Leverage Asset coverage per $1,000 $ 2,375 $ 2,391 $ 2,323 $ 2,276 $ 2,180 ========== ========== ========== ========== ========== Dividends Per Share on Preferred Stock Outstanding Series A--Investment income--net $ 107 $ 313 $ 502 $ 964 $ 854 ========== ========== ========== ========== ========== Series B--Investment income--net $ 112 $ 302 $ 491 $ 1,005 $ 852 ========== ========== ========== ========== ========== *Annualized. **Total investment returns based on market value, which can be significantly greater or lesser than the net asset value, may result in substantially different returns. Total investment returns exclude the effects of sales charges. If applicable, the Fund's Investment Adviser waived a portion of its management fee. Without such waiver, the Fund's performance would have been lower. ++Do not reflect the effect of dividends to Preferred Stock shareholders. ++++Certain prior year amounts have been reclassified to conform to current year presentation. +++Aggregate total investment return. +++++Based on average shares outstanding. See Notes to Financial Statements. MUNIHOLDINGS INSURED FUND, INC., OCTOBER 31, 2003 Notes to Financial Statements 1. Significant Accounting Policies: MuniHoldings Insured Fund, Inc. (the "Fund") is registered under the Investment Company Act of 1940, as amended, as a non-diversified, closed-end management investment company. The Fund's financial statements are prepared in conformity with accounting principles generally accepted in the United States of America, which may require the use of management accruals and estimates. These unaudited financial statements reflect all adjustments, which are, in the opinion of management, necessary to a fair statement of the results for the interim period presented. All such adjustments are of a normal, recurring nature. The Fund determines and makes available for publication the net asset value of its Common Stock on a weekly basis. The Fund's Common Stock is listed on the New York Stock Exchange under the symbol MUS. The following is a summary of significant accounting policies followed by the Fund. (a) Valuation of investments--Municipal bonds are traded primarily in the over-the-counter markets and are valued at the last available bid price in the over-the-counter market or on the basis of yield equivalents as obtained by the Fund's pricing service from one or more dealers that make markets in such securities. Financial futures contracts and options thereon, which are traded on exchanges, are valued at their closing prices as of the close of such exchanges. Options written or purchased are valued at the last sale price in the case of exchange-traded options. In the case of options traded in the over-the-counter market, valuation is the last asked price (options written) or the last bid price (options purchased). Swap agreements are valued by quoted fair values received daily by the Fund from the counterparty. Short-term investments with a remaining maturity of sixty days or less are valued at amortized cost, which approximates market value. Securities and assets for which market quotations are not readily available are valued at fair value as determined in good faith by or under the direction of the Board of Directors of the Fund, including valuations furnished by a pricing service retained by the Fund, which may utilize a matrix system for valuations. The procedures of the pricing service and its valuations are reviewed by the officers of the Fund under the general supervision of the Board of Directors. (b) Derivative financial instruments--The Fund may engage in various portfolio investment strategies both to increase the return of the Fund and to hedge, or protect, its exposure to interest rate movements and movements in the securities markets. Losses may arise due to changes in the value of the contract or if the counterparty does not perform under the contract. * Financial futures contracts--The Fund may purchase or sell financial futures contracts and options on such futures contracts. Futures contracts are contracts for delayed delivery of securities at a specific future date and at a specific price or yield. Upon entering into a contract, the Fund deposits and maintains as collateral such initial margin as required by the exchange on which the transaction is effected. Pursuant to the contract, the Fund agrees to receive from or pay to the broker an amount of cash equal to the daily fluctuation in value of the contract. Such receipts or payments are known as variation margin and are recorded by the Fund as unrealized gains or losses. When the contract is closed, the Fund records a realized gain or loss equal to the difference between the value of the contract at the time it was opened and the value at the time it was closed. * Options--The Fund is authorized to write covered call options and purchase call and put options. When the Fund writes an option, an amount equal to the premium received by the Fund is reflected as an asset and an equivalent liability. The amount of the liability is subsequently marked to market to reflect the current market value of the option written. When a security is purchased or sold through an exercise of an option, the related premium paid (or received) is added to (or deducted from) the basis of the security acquired or deducted from (or added to) the proceeds of the security sold. When an option expires (or the Fund enters into a closing transaction), the Fund realizes a gain or loss on the option to the extent of the premiums received or paid (or gain or loss to the extent the cost of the closing transaction exceeds the premium paid or received). Written and purchased options are non-income producing investments. MUNIHOLDINGS INSURED FUND, INC., OCTOBER 31, 2003 Notes to Financial Statements (continued) * Forward interest rate swaps--The Fund may enter into forward interest rate swaps. In a forward interest rate swap, the Fund and the counterparty agree to make periodic net payments on a specified notional contract amount, commencing on a specified future effective date, unless terminated earlier. When the agreement is closed, the Fund records a realized gain or loss in an amount equal to the value of the agreement. (c) Income taxes--It is the Fund's policy to comply with the requirements of the Internal Revenue Code applicable to regulated investment companies and to distribute substantially all of its taxable income to its shareholders. Therefore, no Federal income tax provision is required. (d) Security transactions and investment income--Security transactions are recorded on the dates the transactions are entered into (the trade dates). Realized gains and losses on security transactions are determined on the identified cost basis. Dividend income is recorded on the ex-dividend dates. Interest income is recognized on the accrual basis. The Fund amortizes all premiums and discounts on debt securities. (e) Dividends and distributions--Dividends from net investment income are declared and paid monthly. Distributions of capital gains are recorded on the ex-dividend dates. 2. Investment Advisory Agreement and Transactions with Affiliates: The Fund has entered into an Investment Advisory Agreement with Fund Asset Management, L.P. ("FAM"). The general partner of FAM is Princeton Services, Inc. ("PSI"), an indirect, wholly-owned subsidiary of Merrill Lynch & Co., Inc. ("ML & Co."), which is the limited partner. FAM is responsible for the management of the Fund's portfolio and provides the necessary personnel, facilities, equipment and certain other services necessary to the operations of the Fund. For such services, the Fund pays a monthly fee at an annual rate of .55% of the Fund's average weekly net assets, including proceeds from the issuance of Preferred Stock. For the six months ended October 31, 2003, FAM earned fees of $890,524, of which $88,125 was waived. For the six months ended October 31, 2003, FAM reimbursed the Fund in the amount of $6,961. For the six months ended October 31, 2003, the Fund reimbursed FAM $3,454 for certain accounting services. Certain officers and/or directors of the Fund are officers and/or directors of FAM, PSI, and/or ML & Co. 3. Investments: Purchases and sales of investments, excluding short-term securities, for the six months ended October 31, 2003 were $72,498,666 and $74,304,515, respectively. Net realized gains for the six months ended October 31, 2003 and net unrealized gains (losses) as of October 31, 2003 were as follows: Realized Unrealized Gains Gains (Losses) Long-term investments $ 3,672,041 $ 15,349,648 Forward interest rate swaps 1,175,738 (653,748) -------------- -------------- Total $ 4,847,779 $ 14,695,900 ============== ============== As of October 31, 2003, net unrealized appreciation for Federal income tax purposes aggregated $15,357,705, of which $16,035,021 related to appreciated securities and $677,316 related to depreciated securities. The aggregate cost of investments at October 31, 2003 for Federal income tax purposes was $298,044,586. 4. Stock Transactions: The Fund is authorized to issue 200,000,000 shares of stock, including Preferred Stock, par value $.10 per share, all of which were initially classified as Common Stock. The Board of Directors is authorized, however, to reclassify any unissued shares of stock without approval of holders of Common Stock. Preferred Stock Auction Market Preferred Stock ("AMPS") are redeemable shares of Preferred Stock of the Fund, with a par value of $.10 per share and a liquidation preference of $25,000 per share plus accrued and unpaid dividends, that entitle their holders to receive cash dividends at an annual rate that may vary for the successive dividend periods. The yields in effect at October 31, 2003 were as follows: Series A, .67% and Series B, .825%. MUNIHOLDINGS INSURED FUND, INC., OCTOBER 31, 2003 Notes to Financial Statements (concluded) The Fund pays commissions to certain broker-dealers at the end of each auction at an annual rate ranging from .25% to .375%, calculated on the proceeds of each auction. For the six months ended October 31, 2003, Merrill Lynch, Pierce, Fenner & Smith Incorporated, an affiliate of FAM, earned $113,930 as commissions. 5. Capital Loss Carryforward: On April 30, 2003, the Fund had a net capital loss carryforward of $24,817,934, of which $15,234,021 expires in 2008 and $9,583,913 expires in 2009. This amount will be available to offset like amounts of any future taxable gains. 6. Subsequent Event: The Fund paid a tax-exempt income dividend to holders of Common Stock in the amount of $.073000 per share on November 26, 2003 to shareholders of record on November 14, 2003. Dividend Policy The Fund's dividend policy is to distribute all or a portion of its net investment income to its shareholders on a monthly basis. In order to provide shareholders with a more stable level of dividend distributions, the Fund may at times pay out less than the entire amount of net investment income earned in any particular month and may at times in any particular month pay out such accumulated but undistributed income in addition to net investment income earned in that month. As a result, the dividends paid by the Fund for any particular month may be more or less than the amount of net investment income earned by the Fund during such month. The Fund's current accumulated but undistributed net investment income, if any, is disclosed in the Statement of Net Assets, which comprises part of the financial information included in this report. MUNIHOLDINGS INSURED FUND, INC., OCTOBER 31, 2003 Officers and Directors Terry K. Glenn, President and Director Ronald W. Forbes, Director Cynthia A. Montgomery, Director Charles C. Reilly, Director Kevin A. Ryan, Director Roscoe S. Suddarth, Director Richard R. West, Director Edward D. Zinbarg, Director Kenneth A. Jacob, Senior Vice President John M. Loffredo, Senior Vice President Robert A. DiMella, Vice President Donald C. Burke, Vice President and Treasurer Brian D. Stewart, Secretary Custodian The Bank of New York 100 Church Street New York, NY 10286 Transfer Agents Common Stock: The Bank of New York 101 Barclay Street New York, NY 10286 Preferred Stock: The Bank of New York 100 Church Street New York, NY 10286 NYSE Symbol MUS Electronic Delivery The Fund is now offering electronic delivery of communications to its shareholders. In order to receive this service, you must register your account and provide us with e-mail information. To sign up for this service, simply access this website http://www.icsdelivery.com/live and follow the instructions. When you visit this site, you will obtain a personal identification number (PIN). You will need this PIN should you wish to update your e-mail address, choose to discontinue this service and/or make any other changes to the service. This service is not available for certain retirement accounts at this time. MUNIHOLDINGS INSURED FUND, INC., OCTOBER 31, 2003 Item 2 - Did registrant adopt a code of ethics, as of the end of the period covered by this report, that applies to the registrant's principal executive officer, principal financial officer, principal accounting officer or controller, or persons performing similar functions, regardless of whether these individuals are employed by the registrant or a third party? If not, why not? Briefly describe any amendments or waivers that occurred during the period. State here if code of ethics/amendments/waivers are on website and give website address-. State here if fund will send code of ethics to shareholders without charge upon request--N/A (annual requirement only) Item 3 - Did the registrant's board of directors determine that the registrant either: (i) has at least one audit committee financial expert serving on its audit committee; or (ii) does not have an audit committee financial expert serving on its audit committee? If yes, disclose name of financial expert and whether he/she is "independent," (fund may, but is not required, to disclose name/ independence of more than one financial expert) If no, explain why not. - N/A (annual requirement only) Item 4 - Disclose annually only (not answered until December 15, 2003) (a) Audit Fees - Disclose aggregate fees billed for each of the last two fiscal years for professional services rendered by the principal accountant for the audit of the registrant's annual financial statements or services that are normally provided by the accountant in connection with statutory and regulatory filings or engagements for those fiscal years. N/A. (b) Audit-Related Fees - Disclose aggregate fees billed in each of the last two fiscal years for assurance and related services by the principal accountant that are reasonably related to the performance of the audit of the registrant's financial statements and are not reported under paragraph (a) of this Item. Registrants shall describe the nature of the services comprising the fees disclosed under this category. N/A. (c) Tax Fees - Disclose aggregate fees billed in each of the last two fiscal years for professional services rendered by the principal accountant for tax compliance, tax advice, and tax planning. Registrants shall describe the nature of the services comprising the fees disclosed under this category. N/A. (d) All Other Fees - Disclose aggregate fees billed in each of the last two fiscal years for products and services provided by the principal accountant, other than the services reported in paragraphs (a) through (c) of this Item. Registrants shall describe the nature of the services comprising the fees disclosed under this category. N/A. (e)(1) Disclose the audit committee's pre-approval policies and procedures described in paragraph (c)(7) of Rule 2-01 of Regulation S-X. N/A. (e)(2) Disclose the percentage of services described in each of paragraphs (b) through (d) of this Item that were approved by the audit committee pursuant to paragraph (c)(7)(i)(C) of Rule 2-01 of Regulation S-X. N/A. (f) If greater than 50%, disclose the percentage of hours expended on the principal accountant's engagement to audit the registrant's financial statements for the most recent fiscal year that were attributed to work performed by persons other than the principal accountant's full-time, permanent employees. N/A. (g) Disclose the aggregate non-audit fees billed by the registrant's accountant for services rendered to the registrant, and rendered to the registrant's investment adviser (not including any sub-adviser whose role is primarily portfolio management and is subcontracted with or overseen by another investment adviser), and any entity controlling, controlled by, or under common control with the adviser that provides ongoing services to the registrant for each of the last two fiscal years of the registrant. N/A. (h) Disclose whether the registrant's audit committee has considered whether the provision of non-audit services that were rendered to the registrant's investment adviser (not including any subadviser whose role is primarily portfolio management and is subcontracted with or overseen by another investment adviser), and any entity controlling, controlled by, or under common control with the investment adviser that provides ongoing services to the registrant that were not pre-approved pursuant to paragraph (c)(7)(ii) of Rule 2-01 of Regulation S-X is compatible with maintaining the principal accountant's independence. N/A. Item 5 - If the registrant is a listed issuer as defined in Rule 10A-3 under the Exchange Act, state whether or not the registrant has a separately-designated standing audit committee established in accordance with Section 3(a)(58)(A) of the Exchange Act. If the registrant has such a committee, however designated, identify each committee member. If the entire board of directors is acting as the registrant's audit committee in Section 3(a)(58)(B) of the Exchange Act, so state. If applicable, provide the disclosure required by Rule 10A-3(d) under the Exchange Act regarding an exemption from the listing standards for audit committees. N/A (Listed issuers must be in compliance with the new listing rules by the earlier of their first annual shareholders meeting after January 2004, or October 31, 2004 (annual requirement)) Item 6 - Reserved Item 7 - For closed-end funds that contain voting securities in their portfolio, describe the policies and procedures that it uses to determine how to vote proxies relating to those portfolio securities. Proxy Voting Policies and Procedures Each Fund's Board of Directors/Trustees has delegated to Merrill Lynch Investment Managers, L.P. and/or Fund Asset Management, L.P. (the "Investment Adviser") authority to vote all proxies relating to the Fund's portfolio securities. The Investment Adviser has adopted policies and procedures ("Proxy Voting Procedures") with respect to the voting of proxies related to the portfolio securities held in the account of one or more of its clients, including a Fund. Pursuant to these Proxy Voting Procedures, the Investment Adviser's primary objective when voting proxies is to make proxy voting decisions solely in the best interests of each Fund and its shareholders, and to act in a manner that the Investment Adviser believes is most likely to enhance the economic value of the securities held by the Fund. The Proxy Voting Procedures are designed to ensure that that the Investment Adviser considers the interests of its clients, including the Funds, and not the interests of the Investment Adviser, when voting proxies and that real (or perceived) material conflicts that may arise between the Investment Adviser's interest and those of the Investment Adviser's clients are properly addressed and resolved. In order to implement the Proxy Voting Procedures, the Investment Adviser has formed a Proxy Voting Committee (the "Committee"). The Committee is comprised of the Investment Adviser's Chief Investment Officer (the "CIO"), one or more other senior investment professionals appointed by the CIO, portfolio managers and investment analysts appointed by the CIO and any other personnel the CIO deems appropriate. The Committee will also include two non- voting representatives from the Investment Adviser's Legal department appointed by the Investment Adviser's General Counsel. The Committee's membership shall be limited to full-time employees of the Investment Adviser. No person with any investment banking, trading, retail brokerage or research responsibilities for the Investment Adviser's affiliates may serve as a member of the Committee or participate in its decision making (except to the extent such person is asked by the Committee to present information to the Committee, on the same basis as other interested knowledgeable parties not affiliated with the Investment Adviser might be asked to do so). The Committee determines how to vote the proxies of all clients, including a Fund, that have delegated proxy voting authority to the Investment Adviser and seeks to ensure that all votes are consistent with the best interests of those clients and are free from unwarranted and inappropriate influences. The Committee establishes general proxy voting policies for the Investment Adviser and is responsible for determining how those policies are applied to specific proxy votes, in light of each issuer's unique structure, management, strategic options and, in certain circumstances, probable economic and other anticipated consequences of alternate actions. In so doing, the Committee may determine to vote a particular proxy in a manner contrary to its generally stated policies. In addition, the Committee will be responsible for ensuring that all reporting and recordkeeping requirements related to proxy voting are fulfilled. The Committee may determine that the subject matter of a recurring proxy issue is not suitable for general voting policies and requires a case-by-case determination. In such cases, the Committee may elect not to adopt a specific voting policy applicable to that issue. The Investment Adviser believes that certain proxy voting issues require investment analysis - such as approval of mergers and other significant corporate transactions - akin to investment decisions, and are, therefore, not suitable for general guidelines. The Committee may elect to adopt a common position for the Investment Adviser on certain proxy votes that are akin to investment decisions, or determine to permit the portfolio manager to make individual decisions on how best to maximize economic value for a Fund (similar to normal buy/sell investment decisions made by such portfolio managers). While it is expected that the Investment Adviser will generally seek to vote proxies over which the Investment Adviser exercises voting authority in a uniform manner for all the Investment Adviser's clients, the Committee, in conjunction with a Fund's portfolio manager, may determine that the Fund's specific circumstances require that its proxies be voted differently. To assist the Investment Adviser in voting proxies, the Committee has retained Institutional Shareholder Services ("ISS"). ISS is an independent adviser that specializes in providing a variety of fiduciary-level proxy-related services to institutional investment managers, plan sponsors, custodians, consultants, and other institutional investors. The services provided to the Investment Adviser by ISS include in-depth research, voting recommendations (although the Investment Adviser is not obligated to follow such recommendations), vote execution, and recordkeeping. ISS will also assist the Fund in fulfilling its reporting and recordkeeping obligations under the Investment Company Act. The Investment Adviser's Proxy Voting Procedures also address special circumstances that can arise in connection with proxy voting. For instance, under the Proxy Voting Procedures, the Investment Adviser generally will not seek to vote proxies related to portfolio securities that are on loan, although it may do so under certain circumstances. In addition, the Investment Adviser will vote proxies related to securities of foreign issuers only on a best efforts basis and may elect not to vote at all in certain countries where the Committee determines that the costs associated with voting generally outweigh the benefits. The Committee may at any time override these general policies if it determines that such action is in the best interests of a Fund. From time to time, the Investment Adviser may be required to vote proxies in respect of an issuer where an affiliate of the Investment Adviser (each, an "Affiliate"), or a money management or other client of the Investment Adviser (each, a "Client") is involved. The Proxy Voting Procedures and the Investment Adviser's adherence to those procedures are designed to address such conflicts of interest. The Committee intends to strictly adhere to the Proxy Voting Procedures in all proxy matters, including matters involving Affiliates and Clients. If, however, an issue representing a non- routine matter that is material to an Affiliate or a widely known Client is involved such that the Committee does not reasonably believe it is able to follow its guidelines (or if the particular proxy matter is not addressed by the guidelines) and vote impartially, the Committee may, in its discretion for the purposes of ensuring that an independent determination is reached, retain an independent fiduciary to advise the Committee on how to vote or to cast votes on behalf of the Investment Adviser's clients. In the event that the Committee determines not to retain an independent fiduciary, or it does not follow the advice of such an independent fiduciary, the powers of the Committee shall pass to a subcommittee, appointed by the CIO (with advice from the Secretary of the Committee), consisting solely of Committee members selected by the CIO. The CIO shall appoint to the subcommittee, where appropriate, only persons whose job responsibilities do not include contact with the Client and whose job evaluations would not be affected by the Investment Adviser's relationship with the Client (or failure to retain such relationship). The subcommittee shall determine whether and how to vote all proxies on behalf of the Investment Adviser's clients or, if the proxy matter is, in their judgment, akin to an investment decision, to defer to the applicable portfolio managers, provided that, if the subcommittee determines to alter the Investment Adviser's normal voting guidelines or, on matters where the Investment Adviser's policy is case-by-case, does not follow the voting recommendation of any proxy voting service or other independent fiduciary that may be retained to provide research or advice to the Investment Adviser on that matter, no proxies relating to the Client may be voted unless the Secretary, or in the Secretary's absence, the Assistant Secretary of the Committee concurs that the subcommittee's determination is consistent with the Investment Adviser's fiduciary duties In addition to the general principles outlined above, the Investment Adviser has adopted voting guidelines with respect to certain recurring proxy issues that are not expected to involve unusual circumstances. These policies are guidelines only, and the Investment Adviser may elect to vote differently from the recommendation set forth in a voting guideline if the Committee determines that it is in a Fund's best interest to do so. In addition, the guidelines may be reviewed at any time upon the request of a Committee member and may be amended or deleted upon the vote of a majority of Committee members present at a Committee meeting at which there is a quorum. The Investment Adviser has adopted specific voting guidelines with respect to the following proxy issues: * Proposals related to the composition of the Board of Directors of issuers other than investment companies. As a general matter, the Committee believes that a company's Board of Directors (rather than shareholders) is most likely to have access to important, nonpublic information regarding a company's business and prospects, and is therefore best-positioned to set corporate policy and oversee management. The Committee, therefore, believes that the foundation of good corporate governance is the election of qualified, independent corporate directors who are likely to diligently represent the interests of shareholders and oversee management of the corporation in a manner that will seek to maximize shareholder value over time. In individual cases, the Committee may look at a nominee's history of representing shareholder interests as a director of other companies or other factors, to the extent the Committee deems relevant. * Proposals related to the selection of an issuer's independent auditors. As a general matter, the Committee believes that corporate auditors have a responsibility to represent the interests of shareholders and provide an independent view on the propriety of financial reporting decisions of corporate management. While the Committee will generally defer to a corporation's choice of auditor, in individual cases, the Committee may look at an auditors' history of representing shareholder interests as auditor of other companies, to the extent the Committee deems relevant. * Proposals related to management compensation and employee benefits. As a general matter, the Committee favors disclosure of an issuer's compensation and benefit policies and opposes excessive compensation, but believes that compensation matters are normally best determined by an issuer's board of directors, rather than shareholders. Proposals to "micro-manage" an issuer's compensation practices or to set arbitrary restrictions on compensation or benefits will, therefore, generally not be supported. * Proposals related to requests, principally from management, for approval of amendments that would alter an issuer's capital structure. As a general matter, the Committee will support requests that enhance the rights of common shareholders and oppose requests that appear to be unreasonably dilutive. * Proposals related to requests for approval of amendments to an issuer's charter or by-laws. As a general matter, the Committee opposes poison pill provisions. * Routine proposals related to requests regarding the formalities of corporate meetings. * Proposals related to proxy issues associated solely with holdings of investment company shares. As with other types of companies, the Committee believes that a fund's Board of Directors (rather than its shareholders) is best-positioned to set fund policy and oversee management. However, the Committee opposes granting Boards of Directors authority over certain matters, such as changes to a fund's investment objective, that the Investment Company Act envisions will be approved directly by shareholders. * Proposals related to limiting corporate conduct in some manner that relates to the shareholder's environmental or social concerns. The Committee generally believes that annual shareholder meetings are inappropriate forums for discussion of larger social issues, and opposes shareholder resolutions "micromanaging" corporate conduct or requesting release of information that would not help a shareholder evaluate an investment in the corporation as an economic matter. While the Committee is generally supportive of proposals to require corporate disclosure of matters that seem relevant and material to the economic interests of shareholders, the Committee is generally not supportive of proposals to require disclosure of corporate matters for other purposes. Item 8--Reserved Item 9(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. Item 9(b)--There were no significant changes in the registrant's internal controls or in other factors that could significantly affect these controls subsequent to the date of their evaluation, including any corrective actions with regard to significant deficiencies and material weaknesses. Item 10 - Exhibits 10(a) - Attach code of ethics or amendments/waivers, unless code of ethics or amendments/waivers is on website or offered to shareholders upon request without charge. N/A. 10(b) - Attach certifications pursuant to Section 302 of the Sarbanes-Oxley Act. 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. MuniHoldings Insured Fund, Inc. By: _/s/ Terry K. Glenn_______ Terry K. Glenn, President of MuniHoldings Insured Fund, Inc. Date: December 22, 2003 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 MuniHoldings Insured Fund, Inc. Date: December 22, 2003 By: _/s/ Donald C. Burke________ Donald C. Burke, Chief Financial Officer of MuniHoldings Insured Fund, Inc. Date: December 22, 2003 Attached hereto as a furnished exhibit are the certifications pursuant to Section 906 of the Sarbanes-Oxley Act.