MUNIYIELD CALIFORNIA INSURED FUND INC
N-30D, 1998-12-16
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                                                                MUNIYIELD
                                                                CALIFORNIA
                                                                INSURED
                                                                FUND, INC.

                               [GRAPHIC OMITTED]

                                                       STRATEGIC
                                                                Performance

                                                                Annual Report
                                                                October 31, 1998
<PAGE>

                    MuniYield California Insured Fund, Inc.

TO OUR SHAREHOLDERS

For the year ended October 31, 1998, the Common Stock of MuniYield California
Insured Fund, Inc. earned $0.824 per share income dividends, which included
earned and unpaid dividends of $0.075. This represents a net annualized yield of
5.23%, based on a month-end per share net asset value of $15.75. Over the same
period, the total investment return on the Fund's Common Stock was +9.26%, based
on a change in per share net asset value from $15.21 to $15.75, and assuming
reinvestment of $0.821 per share income dividends.

For the six-month period ended October 31, 1998, the total investment return on
the Fund's Common Stock was +7.52%, based on a change in per share net asset
value from $15.04 to $15.75, and assuming reinvestment of $0.406 per share
income dividends.

For the six-month period ended October 31, 1998, the Fund's Auction Market
Preferred Stock had an average yield of 3.33% for Series A and 3.53% for Series
B.

The Municipal Market Environment

During the six months ended October 31, 1998, long-term bond yields declined
significantly. The near absence of any inflationary pressures in the United
States continued to support historic low interest rates. Additionally, foreign
economic factors have continued to outweigh US domestic fundamentals, as they
have for much of 1998. The economic crisis that began in Asia over a year ago
has spread both to Russia and South America. However, economic factors in these
countries have begun to negatively impact US growth. For example, employment in
the US manufacturing sector declined in recent months as a result of reduced
demand for export goods. Concern that the modest decline in US economic growth
seen thus far would spread and intensify led the Federal Reserve Board to lower
short-term interest rates in late September, in mid-October and in mid-November.
These actions were taken to offset the drag of foreign economies on future US
growth.

US Treasury bond yields continued to benefit from a strong "flight to quality"
as foreign investors were drawn to the relative safe haven of US Government
securities. Additionally, the sharp equity market correction, which began at the
end of August, triggered a further flight into US Treasury securities. Long-term
US Treasury bond yields fell over 90 basis points (0.90%) to approximately 5% by
the end of September. This is the lowest level since the US Treasury
reintroduced 30-year maturity bond auctions in 1977.

By early October, worldwide investor confidence began to rise, reducing the
demand for the safety and liquidity of US Treasury securities. Investor
confidence was restored by the belief that major world governments, as well as
the International Monetary Fund, would take the necessary action to support weak
domestic economies in Asia and Latin America. Additionally, rapid recovery in US
and world equity markets caused some investors to reallocate funds from US debt
instruments back to various world equity markets. US Treasury security yields
rose for the remainder of the month to end October at 5.15%. During the
six-month period ended October 31, 1998, long-term Treasury security yields
declined approximately 80 basis points.

During the past 12 months, the tax-exempt bond market has contended with
significant new-issue supply pressures. Over the past year, more than $277
billion in new long-term tax-exempt bonds were underwritten, an increase of
almost 30% compared to the same period a year ago. During the most recent
six-month period, approximately $140 billion in new long-term municipal bonds
were underwritten, representing an increase of more than 15% over the same
six-month period last year. This increased supply, coupled with the high returns
the US equity market generated for much of 1998, was one of the major reasons
municipal bond yields declined less than their taxable counterparts during the
period.

The continued increase in new bond issuance has required ever-lower tax-exempt
bond yields to generate the economic savings necessary for additional municipal
bond financings. Consequently, the pace of new bond issuance has slowed in
recent months. In fact, the trend may be reversing. During the three months
ended October 31, 1998, just over $60 billion in new long-term municipal bonds
were underwritten, a decline of 4% compared to the same quarter a year ago.


                                                                               1
<PAGE>

MuniYield California Insured Fund, Inc.                         October 31, 1998

During the month of October, there were less than $20 billion in new municipal
bond securities issued, a decline of over 10% compared to October 1997. We will
monitor this trend closely in the coming months to determine if the supply
pressures exerted thus far in 1998 are abating and fostering a more balanced
supply/demand environment.

Throughout the six-month period ended October 31, 1998, municipal bond yields
followed a pattern that was similar to US Treasury securities, although the
yield declines were more muted. As measured by the unmanaged Bond Buyer Revenue
Bond Index, long-term, uninsured tax-exempt revenue bond yields declined over 40
basis points to 5.09% by the end of September, their lowest level since the
early 1970s. Municipal bond yields rose during October to end the period at
5.24%. Over the past six months, long-term tax-exempt bond yields declined
almost 30 basis points.

Although municipal bond yields declined during the six-month period, recent
supply pressures and the absence of the safe haven status enjoyed by US
securities caused municipal bond yields to rise relative to US Treasury bond
yields. At October 31, 1998, long-term tax-exempt bond yield spreads were
attractive relative to US Treasury securities of comparable maturities (over
100%), well in excess of their historic range of 85%-88%. Tax-exempt bond yield
ratios have rarely exceeded 90% in the 1980s and 1990s. Historically, yield
spreads have been wider than these levels when there have been potential changes
in Federal tax codes that would have adversely affected the tax-favored status
of municipal bonds.

Currently, municipal bond investors find themselves in a unique investment
environment. Previous opportunities to purchase tax-exempt bonds with yields
exceeding that of comparable US Treasury issues have been limited to relatively
brief episodes and then further limited to a few municipal credits undergoing
specific financial pressures. At present, almost the entire municipal bond
universe, across nearly all maturity and credit sectors, can be purchased at
yields greater than their taxable counterparts. However, the current opportunity
may quickly disappear should tax-exempt bond supply pressures diminish or the
safe-haven status of US Treasury securities become less desirable. Under these
conditions, municipal bond ratios should quickly revert to more normal historic
percentages, certainly well below their presently attractive levels.

Portfolio Strategy

For the six-month period ended October 31, 1998, we managed the Fund with the
intention of seeking to sustain an appealing level of tax-exempt income in
addition to providing an attractive total return. Throughout the period, we
maintained a fully invested position using any dips in the market to restructure
the Fund more aggressively, while using market rallies to sell more aggressively
structured bonds. Although the overall trend in interest rates declined during
the period, market volatility created a trading range Interest rates fluctuated
rapidly during the period, reflecting changes in both the outlook for inflation
and the Federal Reserve Board's monetary policy. Overall, the Fund was
well-positioned to benefit from a decline in interest rates because we believed
that inflation was not an obstacle.

Looking ahead, we believe that interest rates will fluctuate until a sustained
slowdown in the US economy drives interest rates lower. Consequently, we will
focus on extending the Fund's duration on any market back-ups in order to seek
to enhance the Fund's total return.

In Conclusion

We appreciate your ongoing interest in MuniYield California Insured Fund, Inc.,
and we look forward to serving your investment needs in the months and years to
come.

Sincerely,

/s/ Arthur Zeikel

Arthur Zeikel
President

/s/ Vincent R. Giordano

Vincent R. Giordano
Senior Vice President

/s/ Roberto Roffo

Roberto Roffo
Vice President and Portfolio Manager

December 4, 1998


2
<PAGE>

MuniYield California Insured Fund, Inc.                         October 31, 1998

PROXY RESULTS

During the six-month period ended October 31, 1998, MuniYield California Insured
Fund, Inc. Common Stock shareholders voted on the following proposals. The
proposals were approved at a shareholders' meeting on September 24, 1998. The
description of each proposal and number of shares voted are as follows:

<TABLE>
<CAPTION>
- ------------------------------------------------------------------------------------------------------------------------------------
                                                                                            Shares Voted             Shares Withheld
                                                                                                For                     From Voting
- ------------------------------------------------------------------------------------------------------------------------------------
<S>                                             <C>                                          <C>                          <C>
1. To elect the Fund's Board of Directors:      James H. Bodurtha                            15,378,624                   357,252
                                                Herbert I. London                            15,378,124                   357,753
                                                Robert R. Martin                             15,378,124                   357,753
                                                Arthur Zeikel                                15,378,624                   357,252
</TABLE>

<TABLE>
<CAPTION>
- ------------------------------------------------------------------------------------------------------------------------------------
                                                                     Shares Voted           Shares Voted               Shares Voted
                                                                         For                    Against                   Abstain
- ------------------------------------------------------------------------------------------------------------------------------------
<S>                                                                   <C>                       <C>                       <C>
2. To ratify the selection of Deloitte & Touche LLP as the Fund's
   independent auditors for the current fiscal year.                  15,356,071                229,974                   149,832
- ------------------------------------------------------------------------------------------------------------------------------------
</TABLE>

During the six-month period ended October 31, 1998, MuniYield California Insured
Fund, Inc. Preferred Stock shareholders (Series A and B) voted on the following
proposals. The proposals were approved at a shareholders' meeting on September
24, 1998. The description of each proposal and number of shares voted are as
follows:

<TABLE>
<CAPTION>
- ------------------------------------------------------------------------------------------------------------------------------------
                                                                                            Shares Voted             Shares Withheld
                                                                                                For                     From Voting
- ------------------------------------------------------------------------------------------------------------------------------------
<S>                                                                                            <C>                           <C>
1. To elect the Fund's Board of Directors: James H. Bodurtha, Herbert I. London,
   Robert R. Martin, Joseph L. May, Andre F. Perold and Arthur Zeikel as follows:
                                                Series A                                       1,963                         16
                                                Series B                                       1,974                          0
</TABLE>

<TABLE>
<CAPTION>
- ------------------------------------------------------------------------------------------------------------------------------------
                                                                     Shares Voted           Shares Voted               Shares Voted
                                                                         For                    Against                   Abstain
- ------------------------------------------------------------------------------------------------------------------------------------
<S>                                                                     <C>                       <C>                        <C>
2. To ratify the selection of Deloitte & Touche LLP as the Fund's
   independent auditors for the current fiscal year as follows:
                                                Series A                1,946                     0                          33
                                                Series B                1,974                     0                           0
- ------------------------------------------------------------------------------------------------------------------------------------
</TABLE>

MANAGED DIVIDEND POLICY

The Fund's dividend policy is to distribute substantially all of its net
investment income to its shareholders on a monthly basis. However, in order to
provide shareholders with a more consistent yield to the current trading price
of shares of Common Stock of the Fund, 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 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 Assets, Liabilities and Capital, which comprises
part of the Financial Information included in this report.


                                                                               3
<PAGE>

MuniYield California Insured Fund, Inc.                         October 31, 1998

THE BENEFITS AND RISKS OF LEVERAGING

MuniYield California Insured Fund, Inc. utilizes leveraging 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 issuance 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 of the fund's Common Stock (that is, its price
as listed on the California 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, interest rates 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 port-folio and the net asset
value of the Fund's shares may also be more volatile than if the Fund did not
invest in such securities.

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 and at right.

AMT             Alternative Minimum Tax (subject to)
COP             Certificates of Participation
GO              General Obligation Bonds
HFA             Housing Finance Agency
IDR             Industrial Development Revenue Bonds
INFLOS          Inverse Floating Rate Municipal Bonds
PCR             Pollution Control Revenue Bonds
RIB             Residual Interest Bonds
RITES           Residual Interest Tax-Exempt Securities
RITR            Residual Interest Trust Receipts
S/F             Single-Family
UT              Unlimited Tax
VRDN            Variable Rate Demand Notes


4
<PAGE>

MuniYield California Insured Fund, Inc.                         October 31, 1998

SCHEDULE OF INVESTMENTS                                           (in Thousands)

<TABLE>
<CAPTION>
S&P         Moody's       Face                                                                                               Value
Ratings     Ratings      Amount                                            Issue                                           (Note 1a)
- ------------------------------------------------------------------------------------------------------------------------------------
California--98.7%
- ------------------------------------------------------------------------------------------------------------------------------------
<S>         <C>          <C>            <C>                                                                                 <C>
AAA         Aaa          $ 2,000        ABC, California, Unified School District, UT, Series A, 4.75% due 8/01/2022 (i)     $  1,931
====================================================================================================================================
                                        Anaheim, California, Public Financing Authority, Lease Revenue Bonds (Public
                                        Improvements Project), Sub-Series C (i):
AAA         Aaa           12,485          5.37%** due 9/01/2034                                                                2,004
AAA         Aaa           20,000          5.25%** due 9/01/2035                                                                3,051
====================================================================================================================================
AAA         Aaa            2,000        Bay Area, California, Government Association, Tax Allocation Revenue Bonds
                                        (California Redevelopment Agency), Series A, 6% due 12/15/2024(i)                      2,228
====================================================================================================================================
AAA         Aaa            1,960        Berkeley, California, Unified School District, UT, Series C, 6.50%
                                        due 8/01/2004(b)(f)                                                                    2,271
====================================================================================================================================
AAA         Aaa            2,000        Beverly Hills, California, Public Financing Authority, Lease Revenue Bonds, INFLOS,
                                        Series A, 7.37% due 6/01/2015 (d)(e)                                                   2,198
====================================================================================================================================
AAA         Aaa            2,000        Big Bear Lake, California, Water Revenue Refunding Bonds, 6% due 4/01/2022 (d)         2,301
====================================================================================================================================
                                        California Educational Facilities Authority Revenue Bonds:
AAA         Aaa            5,985          RITR, AMT, Series 37, 7.27% due 4/01/2028 (b)(e)                                     6,446
AAA         Aaa           10,000          Refunding (California Institute of Technology), 4.25% due 10/01/2028                 8,927
====================================================================================================================================
                                        California Health Facilities Financing Authority Revenue Bonds:
AAA         Aaa            2,850          (Adventist Health System--West), Series B, 6.50% due 3/01/2011 (d)                   3,066
A1+         VMIG1+           100          (Adventist Hospital), VRDN, Series A, 3.60% due 9/01/2028 (a)(d)                       100
A1+         VMIG1+           600          (Adventist Hospital), VRDN, Series B, 3.60% due 9/01/2028 (a)(d)                       600
AAA         Aaa            5,000          RITR, Series 17, 7.02% due 8/15/2030 (d)(e)                                          5,375
AAA         NR*            8,750          RITR, Series 26, 7.535% due 6/01/2022 (e)(i)                                         9,637
A1+         VMIG1+           100          Refunding (Sutter/CHS), VRDN, Series C, 3.60% due 7/01/2022 (a)(i)                     100
AAA         Aaa            2,750          (Scripp Memorial Hospital), Series A, 6.375% due 10/01/2022 (d)                      3,031
====================================================================================================================================
                                        California HFA, Home Mortgage Revenue Bonds, AMT:
AA-         Aa               170          Series B, 8% due 8/01/2029                                                             176
AA-         Aa             4,220          Series F-1, 7% due 8/01/2026                                                         4,587
AA-         Aa2            5,365          Series G, 7.05% due 8/01/2027                                                        5,674
AAA         Aaa            1,675          Series I, 5.75% due 2/01/2029 (d)                                                    1,756
====================================================================================================================================
AA-         Aa             1,950        California HFA, Revenue Bonds, RIB, AMT, 9.061% due 8/01/2023 (e)                      2,247
====================================================================================================================================
                                        California Pollution Control Financing Authority, PCR, Refunding
                                        (Pacific Gas and Electric Co.), VRDN (a):
A1+         NR*            3,400          Series C, 3.60% due 11/01/2026                                                       3,400
A1+         NR*            2,200          Series F, 3.60% due 11/02/2026                                                       2,200
====================================================================================================================================
A1+         VMIG1+           200        California Pollution Control Financing Authority, Solid Waste Disposal Revenue Bonds
                                        (Shell Oil Co.--Martinez Project), VRDN, AMT, Series A, 3.65% due 10/01/2024 (a)         200
====================================================================================================================================
NR*         Aaa            1,060        California Rural Home Mortgage Finance Authority, S/F Mortgage Revenue Bonds
                                        (Mortgage-Backed Securities Program), AMT, Series A-1, 6.90% due 12/01/2024 (g)(h)     1,182
====================================================================================================================================
A1+         VMIG1+           100        California State Economic Development Financing Authority Revenue Bonds
                                        (California Independent Systems Project), VRDN, Series C, 3.60% due 4/01/2008 (a)        100
====================================================================================================================================
                                        California State, GO:
AAA         Aaa           20,000          Refunding, UT, 4.25% due 10/01/2026 (d)                                             17,865
AAA         Aaa              160          UT, 6.90% due 11/01/2011 (c)                                                           186
AAA         Aaa           23,000          Various Purpose, 6.25% due 10/01/2019 (d)                                           25,609
====================================================================================================================================
                                        California State Public Works Board, Lease Revenue Bonds:
AAA         Aaa            9,485          (California State University), Series C, 5.40% due 10/01/2022 (d)                    9,923
AAA         Aaa            7,635          Refunding (Department of Corrections--State Prisons),
                                          Series A, 5% due 12/01/2019 (b)                                                      7,775
====================================================================================================================================
</TABLE>


                                                                               5
<PAGE>

MuniYield California Insured Fund, Inc.                         October 31, 1998

SCHEDULE OF INVESTMENTS (continued)                               (in Thousands)

<TABLE>
<CAPTION>
S&P         Moody's       Face                                                                                               Value
Ratings     Ratings      Amount                                            Issue                                           (Note 1a)
- ------------------------------------------------------------------------------------------------------------------------------------
California (continued)
- ------------------------------------------------------------------------------------------------------------------------------------
<S>         <C>          <C>            <C>                                                                                   <C>
AA          Aa2          $ 1,000        California State Water Department Resources, Water System Revenue Bonds
                                        (Central Valley Project), Series O, 4.75% due 12/01/2017                              $  991
====================================================================================================================================
NR*         Aaa            5,750        California Statewide Communities Development Authority, COP, RITR,
                                        Series 24, 7.135% due 12/01/2015 (e)(i)                                                6,234
====================================================================================================================================
AAA         Aaa            1,100        California Statewide Community Development Authority Revenue Bonds, COP (Good
                                        Samaritan Health System), 6.50% due 5/01/2004 (f)(j)                                   1,267
====================================================================================================================================
AAA         Aaa            1,500        Central Coast, California, Water Authority, Revenue Refunding Bonds (State Water
                                        Project Regional Facilities), Series A, 5% due 10/01/2016 (b)                          1,523
====================================================================================================================================
AAA         Aaa            3,000        Cerritos, California, Public Financing Authority, Revenue Refunding Bonds
                                        (Los Coyotes Redevelopment Project Loan), Series A, 6.50% due 11/01/2023 (b)           3,698
====================================================================================================================================
AAA         Aaa            7,000        Compton, California, Community Redevelopment Agency, Tax Allocation Refunding Bonds
                                        (Compton Redevelopment Project), Series A, 6.50% due 8/01/2013 (i)                     8,043
====================================================================================================================================
AAA         Aaa            5,000        Cucamonga County, California, Water District Facilities Refinancing Bonds, COP,
                                        6.50% due 9/01/2022 (c)                                                                5,442
====================================================================================================================================
AAA         Aaa            5,000        El Camino, California, Hospital District Revenue Refunding Bonds,
                                        Series A, 6.25% due 8/15/2017 (b)(k)                                                   5,259
====================================================================================================================================
AAA         Aaa            1,000        Fairfield--Suisun, California, Sewer District Revenue Refunding Bonds,
                                        Series A, 6.25% due 5/01/2016 (d)                                                      1,075
====================================================================================================================================
AAA         Aaa            2,060        Fontana, California, Redevelopment Agency, Tax Allocation Refunding Bonds
                                        (Southwest Industrial Park Project), 4.75% due 9/01/2026 (d)                           1,986
====================================================================================================================================
AAA         Aaa            2,100        Fresno, California, Joint Powers Financing Authority, Lease Revenue Bonds
                                        (Exhibit Hall Expansion Project), 4.75% due 9/01/2028 (b)                              2,022
====================================================================================================================================
BBB         Baa            4,625        Inglewood, California, Public Financing Authority Revenue Bonds (Manchester--
                                        Prairie--N. Inglewood Industrial Park Project), Series B, 7% due 5/01/2022             5,017
====================================================================================================================================
AAA         Aaa            3,750        Los Angeles, California, Community College District, COP, Refunding,
                                        Series A, 6% due 8/15/2020 (i)                                                         4,062
====================================================================================================================================
AAA         Aaa            7,365        Los Angeles, California, Harbor Department Revenue Bonds, RITR, AMT,
                                        Series 7, 8.645% due 11/01/2026 (d)(e)                                                 9,088
====================================================================================================================================
AAA         Aaa            1,460        Los Angeles, California, Unified School District, UT,
                                        Series A, 6% due 7/01/2012 (c)                                                         1,696
====================================================================================================================================
AAA         Aaa            2,000        Los Angeles, California, Wastewater System Revenue Refunding Bonds,
                                        Series C, 4% due 6/01/2016 (d)                                                         1,818
====================================================================================================================================
AA          Aa2            2,000        Los Gatos--Saratoga, California, Joint Union High School District, UT,
                                        Series A, 4.375% due 10/01/2023                                                        1,831
====================================================================================================================================
AAA         Aaa            6,475        M-S-R Public Power Agency, California, Revenue Bonds (San Juan Project),
                                        Series E, 6.50% due 7/01/2017 (d)                                                      7,023
====================================================================================================================================
                                        Metropolitan Water District, Southern California:
AAA         Aaa            2,250          (Election 1966), Series H, 4.75% due 3/01/2037                                       2,154
AA          Aa2            4,750          Waterworks Revenue Refunding Bonds, Series A, 5.75% due 7/01/2021                    5,320
====================================================================================================================================
AAA         Aaa            4,500        Modesto, California, Public Financing Authority, Lease Revenue Refunding Bonds
                                        (Capital Improvements & Refinancing Project), 4.75% due 9/01/2024 (b)                  4,344
====================================================================================================================================
AAA         Aaa            3,340        Monterey County, California, COP (Matividad Medical Improvement Center),
                                        Series E, 4.75% due 8/01/2019 (d)                                                      3,254
====================================================================================================================================
AAA         Aaa            3,000        Mount Diablo, California, Unified School District, Community Facilities,
                                        Special District Number 1 Tax Bonds, 6.30% due 8/01/2022 (b)                           3,294
====================================================================================================================================
</TABLE>


6
<PAGE>

MuniYield California Insured Fund, Inc.                         October 31, 1998

SCHEDULE OF INVESTMENTS (continued)                               (in Thousands)

<TABLE>
<CAPTION>
S&P         Moody's       Face                                                                                               Value
Ratings     Ratings      Amount                                            Issue                                           (Note 1a)
- ------------------------------------------------------------------------------------------------------------------------------------
California (continued)
- ------------------------------------------------------------------------------------------------------------------------------------
<S>         <C>          <C>            <C>                                                                                  <C>
AA          Aa3          $ 2,000        Mountain View--Los Altos, California, Unified High School District, UT,
                                        Series B, 6.50% due 5/01/2017                                                        $ 2,324
====================================================================================================================================
AAA         Aaa            3,000        Northern California Public Power Agency, Revenue Refunding Bonds (Hydroelectric
                                        Project No. 1), Series A, 6.25% due 7/01/2012 (d)                                      3,296
====================================================================================================================================
AAA         Aaa            1,900        Oakland, California, Redevelopment Agency, Refunding, INFLOS, 8.523%
                                        due 9/01/2019 (d)(e)                                                                   2,199
====================================================================================================================================
AAA         Aaa            2,000        Orchard, California, School District, GO, UT, Series A, 6.50% due 8/01/2019 (c)        2,306
====================================================================================================================================
AAA         Aaa            1,955        Palm Desert, California, Tax Allocation Financing Authority, Revenue Refunding
                                        Bonds (Project Area Number 1), 5.15% due 4/01/2011 (d)                                 2,055
====================================================================================================================================
AAA         Aaa            1,000        Palm Springs, California, Financing Authority, Lease Revenue Bonds (Convention
                                        Center Project), Series A, 6.75% due 11/01/2021 (d)                                    1,099
====================================================================================================================================
AAA         Aaa           16,955        Port Oakland, California, Port Revenue Bonds, AMT,
                                        Series E, 6.50% due 11/01/2016 (d)                                                    18,665
====================================================================================================================================
AAA         Aaa            3,500        Poway, California, Unified School District, Special Tax Refunding Bonds (Community
                                        Facilities District No. 1), 4.75% due 10/01/2023 (d)                                   3,376
====================================================================================================================================
AAA         Aaa            4,000        Rancho, California, Water District Financing Authority Revenue Bonds, RITES, 6.427%
                                        due 9/11/2001 (b)(e)(f)                                                                4,369
====================================================================================================================================
AAA         Aaa            8,000        Sacramento, California, City Financing Authority, Lease Revenue Refunding Bonds,
                                        Series A, 5.40% due 11/01/2020 (b)                                                     8,569
====================================================================================================================================
                                        Sacramento, California, Municipal Utility District, Electric Revenue Bonds:
AAA         Aaa            1,000          Refunding, Series G, 6.50% due 9/01/2013 (d)                                         1,217
AAA         Aaa            7,500          Series K, 5.25% due 7/01/2024 (b)                                                    7,903
====================================================================================================================================
                                        San Diego, California, IDR:
AAA         Aaa            1,500          RITR, 8.435% due 9/01/2018 (e)                                                       1,776
AAA         Aaa            5,000          Refunding (San Diego Gas and Electric), Series C, 5.90% due 9/01/2018 (i)            5,409
====================================================================================================================================
                                        San Francisco, California, City and County International Airports
                                        Commission, Revenue Bonds, Second Series (d):
AAA         Aaa            4,660          Issue 21, 4.50% due 5/01/2023                                                        4,352
AAA         Aaa            7,500          Refunding, Issue 2, 6.75% due 5/01/2020                                              8,448
====================================================================================================================================
                                        San Francisco, California, City and County Redevelopment Agency, Lease Revenue Bonds
                                        (George R. Moscone Convention Center) (i):
AAA         Aaa            1,200          6.80% due 7/01/2019                                                                  1,378
AAA         Aaa            2,060          6.75% due 7/01/2024                                                                  2,359
====================================================================================================================================
AAA         Aaa            2,000        San Francisco, California, City and County Sewer Revenue Refunding Bonds, 6%
                                        due 10/01/2011 (b)                                                                     2,186
====================================================================================================================================
AAA         Aaa            2,300        San Jose, California, Redevelopment Agency, Tax Allocation Bonds (Merged Area),
                                        AMT, Series E, 5.85% due 8/01/2027 (d)                                                 2,469
====================================================================================================================================
AAA         Aaa            4,000        San Mateo County, California, Transportation District, Sales Tax Revenue Refunding
                                        Bonds, Series A, 8% due 6/01/2020 (d)                                                  5,661
====================================================================================================================================
AAA         Aaa            6,945        Santa Ana, California, Financing Authority, Lease Revenue Bonds (Police
                                        Administration and Holding Facility), Series A, 6.25% due 7/01/2024 (d)                8,329
====================================================================================================================================
AAA         Aaa            3,540        Santa Clara County, California, Financing Authority, Lease Revenue Bonds
                                        (VMC Facility Replacement Project), Series A, 7.75% due 11/15/2011 (b)                 4,697
====================================================================================================================================
AAA         Aaa            1,850        Santa Fe Springs, California, Redevelopment Agency, Tax Allocation Bonds
                                        (Consolidated Redevelopment Project), Series A, 6.40% due 9/01/2022 (d)                2,041
====================================================================================================================================
</TABLE>


                                                                               7
<PAGE>

MuniYield California Insured Fund, Inc.                         October 31, 1998

SCHEDULE OF INVESTMENTS (concluded)                               (in Thousands)

<TABLE>
<CAPTION>
S&P         Moody's       Face                                                                                               Value
Ratings     Ratings      Amount                                            Issue                                           (Note 1a)
- ------------------------------------------------------------------------------------------------------------------------------------
California (concluded)
- ------------------------------------------------------------------------------------------------------------------------------------
<S>         <C>          <C>            <C>                                                                                 <C>
AAA         Aaa          $ 2,185        Santa Rosa, California, High School District, GO, UT, 6.375% due 5/01/2016 (d)      $  2,428
====================================================================================================================================
AAA         Aaa            1,800        Simi Valley, California, Unified School District, COP (Refunding and Capital
                                        Improvement Projects), 5.25% due 8/01/2022 (b)                                         1,893
====================================================================================================================================
AAA         Aaa            4,500        Southern California Public Power Authority, Transmission Project Revenue Refunding
                                        Bonds (Southern Transmission), Series A, 5.25% due 7/01/2010 (d)                       4,876
====================================================================================================================================
AAA         Aaa            1,500        Stockton, California, COP, Revenue Bonds (Wastewater Treatment Plant Expansion),
                                        Series A, 6.80% due 9/01/2004 (c)(f)                                                   1,764
====================================================================================================================================
                                        Tustin, California, Unified School District, Special Tax Community Facilities
                                        District No. 88-1 (i):
AAA         Aaa            3,250          4.375% due 9/01/2019                                                                 3,025
AAA         Aaa            4,735          4.50% due 9/01/2024                                                                  4,419
====================================================================================================================================
AAA         Aaa            4,000        Walnut Valley, California, Unified School District, Refunding, UT,
                                        Series A, 7.20% due 2/01/2016 (d)                                                      4,964
====================================================================================================================================
Total Investments (Cost--$333,384)--98.7%                                                                                    352,439

Other Assets Less Liabilities--1.3%                                                                                            4,716
                                                                                                                            --------
Net Assets--100.0%                                                                                                          $357,155
                                                                                                                            ========
====================================================================================================================================
</TABLE>

(a)   The interest rate is subject to change periodically based upon prevailing
      market rates. The interest rate shown is the rate in effect at October 31,
      1998.
(b)   AMBAC Insured.
(c)   FGIC Insured.
(d)   MBIA Insured.
(e)   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, 1998.
(f)   Prerefunded.
(g)   GNMA Collateralized.
(h)   FHLMC Collateralized.
(i)   FSA Insured.
(j)   CAPMAC Insured.
(k)   Escrowed to maturity.
  *   Not Rated.
 **   Represents a zero coupon or step bond; the interest rate shown is the
      effective yield at the time of purchase by the Fund.
  +   Highest short-term rating by Moody's Investors Service, Inc.
Ratings of issues shown have not been audited by Deloitte & Touche LLP.

See Notes to Financial Statements.

QUALITY PROFILE

The quality ratings of securities in the Fund as of October 31, 1998 were as
follows:
- --------------------------------------------------------------------------------
                                                                      Percent of
S&P Rating/Moody's Rating                                             Net Assets
- --------------------------------------------------------------------------------
AAA/Aaa.............................................................     88.9%
AA/Aa ..............................................................      6.5
BBB/Baa.............................................................      1.4
Other+..............................................................      1.9
- --------------------------------------------------------------------------------
+     Temporary investments in short-term securities.


8
<PAGE>

MuniYield California Insured Fund, Inc.                         October 31, 1998

FINANCIAL INFORMATION

Statement of Assets, Liabilities and Capital as of October 31, 1998

<TABLE>
<CAPTION>
====================================================================================================================================
<S>            <C>                                                                                  <C>                 <C>
Assets:        Investments, at value (identified cost--$333,383,589) (Note 1a) .................                        $352,438,551
               Cash.............................................................................                              82,745
               Interest ........................................................................                           5,102,343
               Prepaid expenses and other assets................................................                              14,232
                                                                                                                        ------------
               Total assets ....................................................................                         357,637,871
                                                                                                                        ------------
====================================================================================================================================
Liabilities:   Payables:
                 Dividends to shareholders (Note 1e)............................................    $    218,961
                 Investment adviser (Note 2)....................................................         157,832             376,793
                                                                                                    ------------
               Accrued expenses and other liabilities...........................................                             106,052
                                                                                                                        ------------
               Total liabilities ...............................................................                             482,845
                                                                                                                        ------------
====================================================================================================================================
Net Assets:    Net assets.......................................................................                        $357,155,026
                                                                                                                        ============
====================================================================================================================================
Capital:       Capital Stock (200,000,000 shares authorized) (Note 4):
                 Preferred Stock, par value $.05 per share (4,000 shares of AMPS*
                 issued and outstanding at $25,000 per share liquidation preference)                                    $100,000,000
                 Common Stock, par value $.10 per share (16,328,873 shares issued
                 and outstanding) ..............................................................    $  1,632,887
               Paid-in capital in excess of par.................................................     227,673,373
               Undistributed investment income--net ............................................       1,789,881
               Undistributed realized capital gains on investments--net.........................       7,003,923
               Unrealized appreciation on investments--net......................................      19,054,962
                                                                                                    ------------
               Total--Equivalent to $15.75 net asset value per share of Common Stock
               (market price--$15.50) ..........................................................                         257,155,026
                                                                                                                        ------------
               Total capital....................................................................                        $357,155,026
                                                                                                                        ============
====================================================================================================================================
</TABLE>
             * Auction Market Preferred Stock.

               See Notes to Financial Statements.


                                                                               9
<PAGE>

MuniYield California Insured Fund, Inc.                         October 31, 1998

FINANCIAL INFORMATION (continued)

Statement of Operations

<TABLE>
<CAPTION>
                                                                                                                 For the Year Ended
                                                                                                                   October 31, 1998
====================================================================================================================================
<S>                  <C>                                                                            <C>                <C>
Investment Income    Interest and amortization of premium and discount earned...................                       $ 18,909,346
(Note 1d):
====================================================================================================================================
Expenses:            Investment advisory fees (Note 2)..........................................    $  1,760,045
                     Commission fees (Note 4)...................................................         253,200
                     Professional fees..........................................................          73,605
                     Accounting services (Note 2)...............................................          60,745
                     Transfer agent fees........................................................          50,730
                     Listing fees...............................................................          24,260
                     Directors' fees and expenses...............................................          23,033
                     Custodian fees.............................................................          20,329
                     Pricing fees...............................................................          14,423
                     Printing and shareholder reports...........................................           8,831
                     Other......................................................................          26,892
                                                                                                    ------------
                     Total expenses ............................................................                          2,316,093
                                                                                                                        ------------
                     Investment income--net ....................................................                         16,593,253
                                                                                                                        ------------
====================================================================================================================================
Realized & Unreal-   Realized gain on investments--net .........................................                         12,791,120
ized Gain (Loss) on  Change in unrealized appreciation on investments--net .....................                         (3,704,775)
Investments--Net                                                                                                        ------------
(Notes 1b, 1d & 3):  Net Increase in Net Assets Resulting from Operations ......................                        $ 25,679,598
                                                                                                                        ============
====================================================================================================================================
</TABLE>
                     See Notes to Financial Statements.


10
<PAGE>

MuniYield California Insured Fund, Inc.                         October 31, 1998

FINANCIAL INFORMATION (continued)

Statements of Changes in Net Assets

<TABLE>
<CAPTION>
                                                                                                    For the Year Ended October 31,
                                                                                                    -------------------------------
Increase in Net Assets:                                                                                 1998               1997
====================================================================================================================================
<S>                  <C>                                                                            <C>                <C>
Operations:          Investment income--net.....................................................    $ 16,593,253       $ 17,147,491
                     Realized gain on investments--net..........................................      12,791,120          3,911,530
                     Change in unrealized appreciation on investments--net......................      (3,704,775)         6,470,833
                                                                                                    ------------       ------------
                     Net increase in net assets resulting from operations.......................      25,679,598         27,529,854
                                                                                                    ------------       ------------
====================================================================================================================================
Dividends &          Investment income--net:
Distributions to       Common Stock.............................................................     (13,400,404)       (14,026,322)
Shareholders           Preferred Stock..........................................................      (3,034,380)        (3,330,100)
(Note 1e):           Realized gain on investments--net:
                       Preferred Stock..........................................................        (465,980)                --
                                                                                                    ------------       ------------
                     Net decrease in net assets resulting from dividends and distributions
                     to shareholders ...........................................................     (16,900,764)       (17,356,422)
                                                                                                    ------------       ------------
====================================================================================================================================
Net Assets:          Total increase in net assets...............................................       8,778,834         10,173,432
                     Beginning of year..........................................................     348,376,192        338,202,760
                                                                                                    ------------       ------------
                     End of year*...............................................................    $357,155,026       $348,376,192
                                                                                                    ============       ============
====================================================================================================================================
                    *Undistributed investment income--net.......................................    $  1,789,881       $  1,631,412
                                                                                                    ============       ============
====================================================================================================================================
</TABLE>
                     See Notes to Financial Statements.


                                                                              11
<PAGE>

MuniYield California Insured Fund, Inc.                         October 31, 1998

FINANCIAL INFORMATION (concluded)

Financial Highlights

<TABLE>
<CAPTION>
The following per share data and ratios have been derived
from information provided in the financial statements.                                    For the Year Ended October 31,
                                                                              ----------------------------------------------------
Increase (Decrease) in Net Asset Value:                                         1998       1997       1996       1995       1994
==================================================================================================================================
<S>                  <C>                                                      <C>        <C>        <C>        <C>        <C>
Per Share            Net asset value, beginning of year...................    $  15.21   $  14.59   $  14.43   $  12.88   $  15.68
Operating                                                                     --------   --------   --------   --------   --------
Performance:         Investment income--net...............................        1.02       1.05       1.04       1.09       1.10
                     Realized and unrealized gain (loss) on
                     investments--net ....................................         .56        .63        .17       1.53      (2.81)
                                                                              --------   --------   --------   --------   --------
                     Total from investment operations.....................        1.58       1.68       1.21       2.62      (1.71)
                                                                              --------   --------   --------   --------   --------
                     Less dividends and distributions to Common
                     Stock shareholders:
                       Investment income--net.............................        (.82)      (.86)      (.84)      (.84)      (.89)
                       Realized gain on investments--net..................          --         --         --         --       (.02)
                                                                              --------   --------   --------   --------   --------
                     Total dividends and distributions to
                       Common Stock shareholders..........................        (.82)      (.86)      (.84)      (.84)      (.91)
                                                                              --------   --------   --------   --------   --------
                     Effect of Preferred Stock activity:
                       Dividends and distributions to Preferred Stock
                       shareholders:
                         Investment income--net...........................        (.19)      (.20)      (.21)      (.23)      (.18)
                         Realized gain on investments--net................        (.03)        --         --         --         --++
                                                                              --------   --------   --------   --------   --------
                     Total effect of Preferred Stock activity.............        (.22)      (.20)      (.21)      (.23)      (.18)
                                                                              --------   --------   --------   --------   --------
                     Net asset value, end of year.........................    $  15.75   $  15.21   $  14.59   $  14.43   $  12.88
                                                                              ========   ========   ========   ========   ========
                     Market price per share, end of year..................    $  15.50   $ 15.125   $  13.75   $ 12.625   $  11.25
                                                                              ========   ========   ========   ========   ========
==================================================================================================================================
Total Investment     Based on market price per share......................        8.13%     16.74%     15.84%     20.01%    (19.71%)
Return:*                                                                      ========   ========   ========   ========   ========
                     Based on net asset value per share...................        9.26%     10.64%      7.54%     19.81%    (12.06%)
                                                                              ========   ========   ========   ========   ========
==================================================================================================================================
Ratios to Average    Expenses.............................................         .66%       .66%       .67%       .70%       .68%
Net Assets:**                                                                 ========   ========   ========   ========   ========
                     Investment income--net...............................        4.72%      5.01%      5.06%      5.45%      5.34%
                                                                              ========   ========   ========   ========   ========
==================================================================================================================================
Supplemental         Net assets, net of Preferred Stock, end of year
Data:                (in thousands) ......................................    $257,155   $248,376   $238,203   $235,603   $210,255
                                                                              ========   ========   ========   ========   ========
                     Preferred Stock outstanding, end of year
                     (in thousands) ......................................    $100,000   $100,000   $100,000   $100,000   $100,000
                                                                              ========   ========   ========   ========   ========
                     Portfolio turnover...................................      106.63%     71.36%     79.39%     83.26%     38.06%
                                                                              ========   ========   ========   ========   ========
==================================================================================================================================
Leverage:            Asset coverage per $1,000............................    $  3,572   $  3,484   $  3,382   $  3,356   $  3,103
                                                                              ========   ========   ========   ========   ========
==================================================================================================================================
Dividends Per Share  Series A--Investment income--net.....................    $    796   $    858   $    882   $    912   $    684
On Preferred Stock                                                            ========   ========   ========   ========   ========
Outstanding:+        Series B--Investment income--net.....................    $    721   $    807   $    826   $    967   $    788
                                                                              ========   ========   ========   ========   ========
====================================================================================================================================
</TABLE>
                   * 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 loads.
                     See Notes to Financial Statements.
                  ** Do not reflect the effect of dividends to Preferred Stock
                     shareholders.
                  ++ Amount is less than $.01 per share.
                   + Dividends per share have been adjusted to reflect a
                     two-for-one stock split that occurred on December 1, 1994.

                     See Notes to Financial Statements.


12
<PAGE>

MuniYield California Insured Fund, Inc.                         October 31, 1998

NOTES TO FINANCIAL STATEMENTS

1. Significant Accounting Policies:

MuniYield California Insured Fund, Inc. (the "Fund") is registered under the
Investment Company Act of 1940 as a non-diversified, closed-end management
investment company. 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 MIC. 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 most recent bid price or yield
equivalent as obtained by the Fund's pricing service from 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). Securities with remaining
maturities 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
strategies to seek to increase its return by hedging its portfolio against
adverse movements in the debt markets. Losses may arise due to changes in the
value of the contract or if the counterparty does not perform under the
contract.

o Financial futures contracts--The Fund may purchase or sell financial futures
contracts and options on such futures contracts for the purpose of hedging the
market risk on existing securities or the intended purchase of securities.
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.

o Options--The Fund is authorized to write covered call options and purchase 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.

(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).
Interest income is recognized on the accrual basis. Discounts and market
premiums are amortized into interest income. Realized gains and losses on
security transactions are determined on the identified cost basis.

(e) Dividends and distributions--Dividends from net investment income are
declared and paid


                                                                              13
<PAGE>

MuniYield California Insured Fund, Inc.                         October 31, 1998

NOTES TO FINANCIAL STATEMENTS (concluded)

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 0.50% of the Fund's average weekly net assets, including
proceeds form the issuance of Preferred Stock.

Accounting services are provided to the Fund by FAM at cost.

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
year ended October 31, 1998 were $367,917,556 and $359,997,744, respectively.

Net realized gains (losses) for the year ended October 31, 1998 and net
unrealized gains as of October 31, 1998 were as follows:

- --------------------------------------------------------------------------------
                                            Realized                 Unrealized
                                         Gains (Losses)                 Gains
- --------------------------------------------------------------------------------
Long-term investments...........          $12,902,459                $19,054,962
Financial futures contracts.....             (111,339)                        --
                                          -----------                -----------
Total...........................          $12,791,120                $19,054,962
                                          ===========                ===========
- --------------------------------------------------------------------------------

As of October 31, 1998, net unrealized appreciation for Federal income tax
purposes aggregated $19,054,962, of which $20,358,354 related to appreciated
securities and $1,303,392 related to depreciated securities. The aggregate cost
as of October 31, 1998 for Federal income tax purposes was $333,383,589.

4. Capital Stock Transactions:

The Fund is authorized to issue 200,000,000 shares of capital 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 capital stock without approval of holders of
Common Stock.

Common Stock

Shares issued and outstanding during the years ended October 31, 1998 and
October 31, 1997 remained constant.

Preferred Stock

Auction Market Preferred Stock ("AMPS") are shares of Preferred Stock of the
Fund, with a par value of $.05 per share and a liquidation preference of $25,000
per share, 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, 1998 were as follows: Series A, 3.40% and Series B, 3.30%.

Shares issued and outstanding during the years ended October 31, 1998 and
October 31, 1997 remained constant.

The Fund pays commissions to certain broker-dealers at the end of each auction
at an annual rate ranging from 0.25% to 0.375%, calculated on the proceeds of
each auction. For the year ended October 31, 1998, Merrill Lynch, Pierce, Fenner
& Smith Inc., an affiliate of FAM, earned $101,719 as commissions.

5. Subsequent Event:

On November 5, 1998, the Fund's Board of Directors declared an ordinary income
dividend to Common Stock shareholders in the amount of $.074549 per share,
payable on November 27, 1998 to shareholders of record as of November 20, 1998.


14
<PAGE>

MuniYield California Insured Fund, Inc.                         October 31, 1998

INDEPENDENT AUDITORS' REPORT

The Board of Directors and Shareholders,
MuniYield California Insured Fund, Inc.:

We have audited the accompanying statement of assets, liabilities and capital,
including the schedule of investments, of MuniYield California Insured Fund,
Inc. as of October 31, 1998, the related statements of operations for the year
then ended and changes in net assets for each of the years in the two-year
period then ended, and the financial highlights for each of the years in the
five-year period then ended. These financial statements and the financial
highlights are the responsibility of the Fund's management. Our responsibility
is to express an opinion on these financial statements and the financial
highlights based on our audits.

We conducted our audits in accordance with generally accepted auditing
standards. Those standards require that we plan and perform the audit to obtain
reasonable assurance about whether the financial statements and the financial
highlights are free of material misstatement. An audit includes examining, on a
test basis, evidence supporting the amounts and disclosures in the financial
statements. Our procedures included confirmation of securities owned at October
31, 1998 by correspondence with the custodian. An audit also includes assessing
the accounting principles used and significant estimates made by management, as
well as evaluating the overall financial statement presentation. We believe that
our audits provide a reasonable basis for our opinion.

In our opinion, such financial statements and financial highlights present
fairly, in all material respects, the financial position of MuniYield California
Insured Fund, Inc. as of October 31, 1998, the results of its operations, the
changes in its net assets, and the financial highlights for the respective
stated periods in conformity with generally accepted accounting principles.

Deloitte & Touche LLP
Princeton, New Jersey
December 10, 1998

IMPORTANT TAX INFORMATION (unaudited)

All of the net investment income distributions paid by MuniYield California
Insured Fund, Inc. during its taxable year ended October 31, 1998 qualify as
tax-exempt interest dividends for Federal income tax purposes. Additionally, the
following table summarizes the taxable capital gains distributions paid by the
Fund during the year:

- --------------------------------------------------------------------------------
                                                   Payable          Long-Term
                                                     Date         Capital Gains*
- --------------------------------------------------------------------------------
Preferred Stock Shareholders:    Series A          10/16/98          $101.92
                                 -----------------------------------------------
                                 Series B           9/25/98          $ 19.42
                                                   10/02/98          $ 26.29
                                                   10/09/98          $ 19.42
                                                   10/16/98          $ 19.49
                                                   10/23/98          $ 23.80
                                                   10/30/98          $ 22.65
- --------------------------------------------------------------------------------
*     The entire distribution is subject to the 20% tax rate. 

      Please retain this information for your records.


                                                                              15
<PAGE>

Officers and Directors

Arthur Zeikel, President and Director
James H. Bodurtha, Director
Herbert I. London, Director
Robert R. Martin, Director
Joseph L. May, Director
Andre F. Perold, Director
Terry K. Glenn, Executive Vice President
Vincent R. Giordano, Senior Vice President
Donald C. Burke, Vice President
Kenneth A. Jacob, Vice President
Roberto Roffo, Vice President
Gerald M. Richard, Treasurer
Philip M. Mandel, Secretary

Custodian

State Street Bank and Trust Company
225 Franklin Street
Boston, MA 02110

Transfer Agents

Common Stock:
State Street Bank and Trust Company
225 Franklin Street
Boston, MA 02110

Preferred Stock:
IBJ Schroder Bank & Trust Company
One State Street
New York, NY 10004

NYSE Symbol
MIC

This report, including the financial information herein, is transmitted to the
shareholders of MuniYield California Insured Fund, Inc. for their information.
It is not a prospectus, circular or representation intended for use in the
purchase of shares of the Fund or any securities mentioned in the report. Past
performance results shown in this report should not be considered a
representation of future performance. The Fund has leveraged its Common Stock 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.

MuniYield California
Insured Fund, Inc.
Box 9011
Princeton, NJ
08543-9011                                                         #16338--10/98

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