VAN KAMPEN STRATEGIC SECTOR MUNICIPAL TRUST
N-30D, 1999-06-22
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<PAGE>   1

                               TABLE OF CONTENTS

<TABLE>
<S>                                               <C>
Letter to Shareholders...........................  1
Economic Snapshot................................  2
Performance Results..............................  3
Glossary of Terms................................  4
Portfolio Management Review......................  5
Portfolio Highlights.............................  8
Portfolio of Investments.........................  9
Statement of Assets and Liabilities.............. 17
Statement of Operations.......................... 18
Statement of Changes in Net Assets............... 19
Financial Highlights............................. 20
Notes to Financial Statements.................... 22
Dividend Reinvestment Plan....................... 27
</TABLE>

VKS SAR 6/99
<PAGE>   2

                             LETTER TO SHAREHOLDERS

May 20, 1999

Dear Shareholder,
    With the volatility that we've experienced in many financial markets in
recent months, some investors have sold securities because of uncertainty about
where the markets were going, only to be left rethinking whether they made the
right decision. We've witnessed this kind of market activity numerous times over
the past several years, sparked by concerns such as the impact of the Asian
economic crisis, high stock valuations, or, most recently, the stability of many
high-flying technology companies. While these fears eventually subsided,
investors who may have sold during this period were unable to reap the benefits
of the latest rally. That's partly because most of the recent big gains happened
in relatively short periods of time. This kind of volatility--and the danger of
making short-term decisions--highlights the importance of investing for the long
term, in accordance with your individual financial objectives.
    Although the worst of the Asian crisis appears to be behind us, new concerns
are always emerging. In the coming months, we'll likely hear more about how the
year 2000 computer problem may affect the markets or that we're overdue for a
correction. While the markets could undoubtedly suffer as a result of these or
any number of other events, we encourage you to focus on your long-term
investment goals. Although nothing is certain, history has shown us that over
time, the markets tend to recover--and most investors want to be positioned to
take advantage of any recovery.
    If you have concerns about market volatility or questions about how your
portfolio is structured to respond to these events, we encourage you to contact
your financial advisor. Your advisor can talk with you about sustaining a
long-term investment plan through a variety of market conditions. We hope that
Van Kampen Funds will play an important role as you and your advisor build a
portfolio designed to help you weather whatever the markets have in store.

Sincerely,


[SIG.]
Richard F. Powers III

Chairman
Van Kampen Investment Advisory Corp.

[SIG.]
Dennis J. McDonnell

President
Van Kampen Investment Advisory Corp.


                                        1
<PAGE>   3

                               ECONOMIC SNAPSHOT

    A surge in consumer confidence led to strong economic growth over the past
six months, as fears about the impact of the Asian financial crisis subsided. In
the fourth quarter, the nation's gross domestic product (GDP) rose at an
astounding 6.0 percent annual rate and remained strong at 4.5 percent through
the first quarter of 1999. This powerful level of growth is attributed to a
continued increase in consumer spending, a strong housing market, and high
retail sales--all the result of a more confident consumer given the positive
employment environment. The economy began to show signs of slowing down early in
1999, however, as corporate profits and wage growth declined.

    Despite continued improvements in Asia and Latin America and the record
economic growth in the United States, inflation remained at bay in late 1998 as
commodity prices tumbled. Although rising oil prices pushed inflation up 3.3
percent on an annualized basis in the first four months of 1999, price increases
remained moderate enough overall to keep inflation-adjusted interest rates
attractive.

    Our outlook for the domestic economy remains positive, although we
anticipate slower growth in the second half of the year. We look for a gradual
but steady rise in inflation throughout 1999 to more normal but certainly not
alarming levels. Internationally, low interest rates and improving financial
conditions should continue to support the economic progress we've witnessed
overseas.

                          INTEREST RATES AND INFLATION
                     April 30, 1997, through April 30, 1999

                                    [GRAPH]

<TABLE>
<CAPTION>
                                                       INTEREST RATES                       INFLATION
                                                       --------------                       ---------
<S>                                                    <C>                                  <C>
Apr 1997                                                   6.0000                             2.5000
                                                           5.6250                             2.2000
                                                           6.5000                             2.3000
Jul 1997                                                   6.0000                             2.2000
                                                           5.5000                             2.2000
                                                           6.2500                             2.2000
Oct 1997                                                   5.7500                             2.1000
                                                           5.6875                             1.8000
                                                           6.5000                             1.7000
Jan 1998                                                   5.5625                             1.6000
                                                           5.6250                             1.4000
                                                           6.1250                             1.4000
Apr 1998                                                   5.6250                             1.4000
                                                           5.6875                             1.7000
                                                           6.0000                             1.7000
Jul 1998                                                   5.5625                             1.7000
                                                           5.9375                             1.6000
                                                           5.7500                             1.5000
Oct 1998                                                   5.2500                             1.5000
                                                           4.8750                             1.5000
                                                           4.0000                             1.6000
Jan 1999                                                   4.8125                             1.7000
                                                           4.8750                             1.6000
                                                           5.1250                             1.7000
Apr 1999                                                   4.9375                             2.3000
</TABLE>

    Interest rates are represented by the closing midline federal funds rate
    on the last day of each month. Inflation is indicated by the annual
    percent change of the Consumer Price Index for all urban consumers at
    the end of each month.

                                        2
<PAGE>   4

            PERFORMANCE RESULTS FOR THE PERIOD ENDED APRIL 30, 1999

                  VAN KAMPEN STRATEGIC SECTOR MUNICIPAL TRUST
                           (NYSE TICKER SYMBOL--VKS)

<TABLE>
<S>                                                         <C>
COMMON SHARE TOTAL RETURNS

Six-month total return based on market price(1)...........    (3.78%)
Six-month total return based on NAV(2)....................     1.36%

DISTRIBUTION RATES

Distribution rate as a % of closing common stock
price(3)..................................................     5.72%
Taxable-equivalent distribution rate as a % of closing
common stock price(4).....................................     8.94%

SHARE VALUATIONS

Net asset value...........................................    $14.63
Closing common stock price................................  $13.6250
Six-month high common stock price (11/02/98)..............  $14.7500
Six-month low common stock price (01/25/99)...............  $13.3750
Preferred share (Series A) rate(5)........................    3.150%
Preferred share (Series B) rate(5)........................    3.150%
</TABLE>

(1) Total return based on market price assumes an investment at the market price
at the beginning of the period indicated, reinvestment of all distributions for
the period in accordance with the Trust's dividend reinvestment plan, and sale
of all shares at the closing common stock price at the end of the period
indicated.

(2) Total return based on net asset value (NAV) assumes an investment at the
beginning of the period indicated, reinvestment of all distributions for the
period, and sale of all shares at the end of the period, all at NAV.

(3) Distribution rate represents the monthly annualized distributions of the
Trust at the end of the period and not the earnings of the Trust.

(4) The taxable-equivalent distribution rate is calculated assuming a 36%
federal income tax bracket.

(5) See "Notes to Financial Statements" footnote #5, for more information
concerning Preferred Share reset periods.

A portion of the interest income may be taxable for those investors subject to
the federal alternative minimum tax (AMT).

Past performance does not guarantee future results. Investment return, stock
price and net asset value will fluctuate with market conditions. Trust shares,
when sold, may be worth more or less than their original cost.

                                        3
<PAGE>   5

                               GLOSSARY OF TERMS

CALL FEATURE: Allows the issuer to buy back a bond on specific dates at set
    prices before maturity. These dates and prices are set when the bond is
    issued. To compensate the bondholder for the potential loss of income and
    ownership, a bond's call price is usually higher than the face value of the
    bond. Bonds are usually called when interest rates drop so significantly
    that the issuer can save money by issuing new bonds at lower rates.

CREDIT RATING: An evaluation of an issuer's credit history and capability of
    repaying obligations. Standard & Poor's and Moody's Investors Service are
    two companies that assign bond ratings. Standard & Poor's ratings range from
    a high of AAA to a low of D, while Moody's ratings range from a high of Aaa
    to a low of C.

DISCOUNT BOND: A bond whose market price is lower than its face value (or "par
    value"). Because bonds usually mature at face value, a discount bond has
    more potential to appreciate in price than a par bond does.

INSURED BOND: A bond that is insured against default by the bond insurer. If the
    issuer defaults, the insurance company will step in and take over payments
    of interest and principal when due. Once a bond is insured, it typically
    carries the rating of the insurer. Most insurers are rated AAA.

INVESTMENT-GRADE BONDS: Securities rated BBB and above by Standard & Poor's or
    Baa and above by Moody's Investors Service. Bonds rated below BBB or Baa are
    noninvestment grade.

MATURITY LENGTH: The time it takes for a bond to mature. A bond issued in 1998
    and maturing in 2008 is a 10-year bond.

MUNICIPAL BOND: A debt security issued by a state, municipality, or other
    government entity to finance capital expenditures of public projects, such
    as the construction of highways, public works, or school buildings. Interest
    on public-purpose municipal bonds is exempt from federal income taxes and,
    in some states, from state and local income taxes.

PREMIUM BOND: A bond whose market price is above its face value (or "par
    value"). Because bonds usually mature at face value, a premium bond has less
    potential to appreciate in price than a par bond does.

REFUNDING: Retiring an outstanding bond issue at maturity using money from the
    sale of a new offering.

YIELD: The annual rate of return on an investment, expressed as a percentage.

YIELD SPREAD: The additional yield investors can earn by either investing in
    bonds with longer maturities or by investing in bonds with lower ratings.
    The spread is the difference in yield between bonds with short versus long
    maturities or the difference in yield between high-quality bonds and
    lower-quality bonds.

                                        4
<PAGE>   6

                          PORTFOLIO MANAGEMENT REVIEW

                  VAN KAMPEN STRATEGIC SECTOR MUNICIPAL TRUST

We recently spoke with the management team of the Van Kampen Strategic Sector
Municipal Trust about the key events and economic forces that shaped the markets
during the reporting period. The team includes Timothy D. Haney, portfolio
manager, and Peter W. Hegel, chief investment officer for fixed-income
investments. The following comments reflect their views on the Trust's
performance during the six months ended April 30, 1999.

   Q  HOW WOULD YOU DESCRIBE THE CONDITIONS IN THE MUNICIPAL MARKET DURING THE
      PAST SIX MONTHS?

   A  Although most of the financial markets experienced volatility during the
      period, the municipal market remained relatively stable. For the majority
      of the six months, long-term municipal bond yields remained within a range
of about 5.1 to 5.3 percent, even as the Federal Reserve cut interest rates.
Much of the stability in the municipal market can be attributed to its isolation
from turbulence abroad. Concerns about the financial conditions in Asia and
Latin America hurt the stock and high-yield bond markets last fall, but had
little effect on municipals.
    The positive economic and market conditions encouraged more municipalities
to take advantage of low interest rates and issue new bonds. Although the amount
of municipal debt increased, the credit quality of many issuers was not
compromised--in fact, it improved as the positive economic environment led to
stronger balance sheets. As a result, we saw more issuers using municipal bonds
to finance special growth and expansion projects, as opposed to financing their
regular operations.
    The proportion of higher-yielding municipal bonds also increased during the
period as the number of insured bonds declined. Because bond insurers tightened
their underwriting criteria, more issuers came to market without insurance and
offered higher yields to compensate bondholders for the increased credit risk.
This benefited the Trust because it allowed our experienced research staff to
seek out those higher-yielding bonds that we felt had strong underlying quality.

   Q  WHY WERE MUNICIPAL BONDS SO ATTRACTIVE RELATIVE TO COMPARABLE TREASURY
      BONDS?

   A  Toward the end of 1998, the yields on 30-year insured municipal bonds and
      comparable U.S. Treasury bonds reached equivalent levels, which is a rare
      occurrence. Typically, investment-grade municipal bonds have offered about
85 to 90 percent as much yield as comparable Treasury bonds because their
interest payments are exempt from federal income taxes. However, as Treasury
yields fell and municipal yields remained stable, the yield difference between
the two types of bonds shrank. Early in 1999, investors recognized the
tremendous opportunities available in the municipal market, and demand for
municipals began to increase. In conjunction with a recent slowdown in supply,
this boost in municipal demand pushed the municipal-to-Treasury yield ratio back
to more traditional but still attractive levels.

                                        5
<PAGE>   7

   Q  WHAT STRATEGIES DID YOU USE TO MANAGE THE TRUST?

   A  Our focus was on supporting the Trust's income stream while monitoring its
      risk level and price volatility. To do so, we sought to limit the Trust's
      exposure to bond calls, which can lower its income stream because we must
invest the proceeds of called bonds into bonds paying current lower interest
rates. During the reporting period, we purchased noncallable bonds, which cannot
be paid off early by their issuers, even if interest rates decline. In addition,
we began to replace some of our housing bonds. These bonds carry a risk that the
mortgage holder will refinance the mortgage or pay it off early, especially
during a low interest-rate environment like we are currently experiencing. As a
result, housing bonds are more likely than many other issues to be called from
the portfolio.
    By working closely with our experienced research analysts, we continued to
look for securities that may be temporarily out of favor but that we feel have
the potential to appreciate in price if market circumstances change. For
example, we purchased 30-year bonds with 5 percent coupon rates--which tend to
attract strong demand from individual investors--during a period where heavy
supply kept prices attractive. A few months later, we sold them at a profit when
the supply of municipal securities declined and demand for these issues
increased. For additional portfolio highlights, please refer to page 8.
    In addition, our research team helped us find value in the health-care
sector, which is under pressure as a result of the challenges imposed by managed
care and changing Medicare reimbursement policies. The team sifted through the
range of health-care offerings to help us find lower-rated bonds with attractive
yields and strong underlying quality. For example, they recently uncovered a
hospital issue that was out of favor because its credit rating had been
downgraded. We felt that the market had overreacted to the lower (but still
investment-grade) rating, and we bought the bonds at an attractive price.

   Q  HOW DID THE TRUST PERFORM DURING THE PERIOD?

   A  During the past six months, the Trust generated a total return of -3.78
      percent(1) based on market price. This reflects a decrease in market price
      from $14.5625 per share on October 31, 1998, to $13.6250 on April 30,
1999. In addition, the Trust provided a distribution rate of 5.72 percent(3)
based on its closing common stock price on April 30, 1999. Because the Trust is
exempt from federal income taxes, this distribution rate is equivalent to a
yield of 8.94 percent(4) on a taxable investment for shareholders in the 36
percent federal income tax bracket. The Trust's monthly dividend of $.0650 per
share was unchanged during the reporting period. Past performance does not
guarantee future results. Please refer to the footnotes and chart on page 3 for
additional Trust performance results.

                                        6
<PAGE>   8

   Q  WHAT DO YOU SEE AHEAD FOR THE MUNICIPAL MARKET?

   A  Strong economic performance should continue to bolster the credit
      conditions of municipal issuers. In addition, we expect that this economic
      strength will continue to make municipalities more likely to issue debt
for special projects rather than for general operating financing.
    Although insured debt has been increasing in recent years, we have started
to see a reversal of this trend in the last few months, as municipal bond
insurers have become more cautious. If this caution continues, credit spreads
may widen as the proportion of higher-yielding uninsured bonds increases.
    Finally, we see the potential for changes in traditional economic activity
toward the end of the year because of investor concerns about the year 2000
computer problem. These temporary concerns, however, may result in attractive
investment opportunities that our research staff can explore to uncover
potential value.

[SIG.]
Timothy D. Haney

Portfolio Manager

[SIG.]
Peter W. Hegel

Chief Investment Officer
Fixed Income Investments

                                        7
<PAGE>   9

                              PORTFOLIO HIGHLIGHTS

                  VAN KAMPEN STRATEGIC SECTOR MUNICIPAL TRUST

 TOP FIVE PORTFOLIO SECTORS AS A PERCENTAGE OF LONG-TERM INVESTMENTS

<TABLE>
<CAPTION>
    AS OF APRIL 30, 1999
<S>                           <C>
Health Care.................  26.0%
General Purpose.............  17.4%
Industrial Revenue..........   9.1%
Public Education............   9.1%
Retail
  Electric/Gas/Telephone....   8.6%
</TABLE>

<TABLE>
<CAPTION>
   AS OF OCTOBER 31, 1998
<S>                           <C>
Health Care.................  25.0%
General Purpose.............  17.3%
Single-Family Housing.......   9.8%
Retail
  Electric/Gas/Telephone....   8.4%
Industrial Revenue..........   8.3%
</TABLE>

PORTFOLIO COMPOSITION BY CREDIT QUALITY AS A PERCENTAGE OF LONG-TERM INVESTMENTS

AS OF APRIL 30, 1999
                                  [PIE CHART]

<TABLE>
<CAPTION>
                              AAA/Aaa       AA/Aa        A/A         BBB/Baa      BB/Ba    Non-Rated
                              -------       -----        ---         -------      -----    ---------
<S>                           <C>          <C>         <C>           <C>         <C>       <C>
As of April 30, 1999           65.8%        8.8%        5.3%          16.5%       1.2%      2.4%
</TABLE>

AS OF OCTOBER 31, 1998
                                  [PIE CHART]

<TABLE>
<CAPTION>
                              AAA/Aaa       AA/Aa        A/A        BBB/Baa       BB/Ba    Non-Rated
                              -------       -----        ---        -------       -----    ---------
<S>                           <C>          <C>         <C>          <C>          <C>       <C>
As of October 31, 1998         56.3%        13.2%       5.8%         21.4%        1.2%      2.1%
</TABLE>

Based upon the highest credit quality ratings as issued by Standard & Poor's or
Moody's, respectively.

 DIVIDEND HISTORY

FOR THE PERIOD ENDED APRIL 30, 1999

                                  [BAR GRAPH]

<TABLE>
<CAPTION>
                            Distribution Per Common Share
                            -----------------------------
<S>                                 <C>
 Nov 1998                              0.065
 Dec 1998                              0.065
 Jan 1999                              0.065
 Feb 1999                              0.065
 Mar 1999                              0.065
 Apr 1999                              0.065
</TABLE>

The dividend history represents past performance of the Trust and does not
predict the Trust's future distributions.

                                        8
<PAGE>   10

                            PORTFOLIO OF INVESTMENTS

                           April 30, 1999 (Unaudited)
- --------------------------------------------------------------------------------

<TABLE>
<CAPTION>
  Par
Amount
 (000)                 Description               Coupon       Maturity    Market Value
- --------------------------------------------------------------------------------------
<S>       <C>                                    <C>          <C>         <C>
          MUNICIPAL BONDS  102.5%
          ALABAMA  5.0%
$ 5,000   Alabama Wtr Pollutn Ctl Auth
          Revolving Fund Ln Ser A (AMBAC
          Insd)................................    5.000%     08/15/15    $  4,996,850
  8,000   Montgomery, AL BMC Spl Care Facs Fin
          Auth Rev Baptist Hlth Ser B (MBIA
          Insd)................................    5.000      11/15/29       7,702,960
                                                                          ------------
                                                                            12,699,810
                                                                          ------------
          CALIFORNIA  14.0%
  3,330   Anaheim, CA Ctfs Partn Anaheim Mem
          Hosp Assn Rfdg (AMBAC Insd)..........    5.000      05/15/13       3,368,328
  3,000   California Hlth Fac Fin Auth Rev
          Kaiser Permanente Med Cent...........    5.450      10/01/13       3,064,650
  6,420   California Pollutn Ctl Fin Auth
          Pollutn Ctl Rev Pacific Gas & Elec Co
          Ser B (MBIA Insd)....................    6.350      06/01/09       7,048,647
  1,110   California Rural Home Mtg Fin Auth
          Single Family Mtg Rev Ser C (GNMA
          Collateralized) (d)..................    7.800      02/01/28       1,274,413
 10,000   California Statewide Cmntys Dev Auth
          Rev Ctfs Partn Insd Children's Hosp
          Rfdg (MBIA Insd) (d).................    4.750      06/01/21       9,418,900
  2,000   Los Angeles Cnty, CA Pub Wks (FSA
          Insd)................................    5.500      10/01/18       2,160,940
  3,000   Orange Cnty, CA Recovery Ser A Rfdg
          (MBIA Insd)..........................    6.000      06/01/08       3,388,560
  2,000   Paramount, CA Redev Agy Tax Alloc
          Redev Proj Area No 1 Rfdg (MBIA Insd)
          (d)..................................    6.250      08/01/23       2,189,480
  1,865   Santa Clara Cnty, CA Fin Auth Lease
          Rev Multi Facs Projs Ser B (AMBAC
          Insd) (c)............................    5.500      05/15/08       1,996,762
  1,000   Santa Clara Cnty, CA Fin Auth Lease
          Rev Multi Facs Projs Ser B (AMBAC
          Insd) (c)............................    5.500      05/15/09       1,071,530
  1,330   Temple City, CA Unified Sch Dist Cap
          Apprec Ser A (FGIC Insd).............     *         08/01/16         563,029
                                                                          ------------
                                                                            35,545,239
                                                                          ------------
          COLORADO  4.3%
  1,000   Arapahoe Cnty, CO Cap Impt Trust Fund
          Hwy Rev E-470 Proj Ser B (Prerefunded
          @ 08/31/05)..........................    7.000      08/31/26       1,190,590
  1,875   Colorado Hsg Fin Auth Multi-Family
          Hsg Insd Mtg Ser A...................    6.800      10/01/37       2,033,738
</TABLE>

                                               See Notes to Financial Statements

                                        9
<PAGE>   11
                      PORTFOLIO OF INVESTMENTS (CONTINUED)

                           April 30, 1999 (Unaudited)
- --------------------------------------------------------------------------------

<TABLE>
<CAPTION>
  Par
Amount
 (000)                 Description               Coupon       Maturity    Market Value
- --------------------------------------------------------------------------------------
<S>       <C>                                    <C>          <C>         <C>
          COLORADO (CONTINUED)
$ 1,500   Colorado Hsg Fin Auth Single Family
          Pgm Sr Ser C1........................    7.550%     11/01/27    $  1,700,940
  2,010   Colorado Hsg Fin Auth Single Family
          Pgm Sr Ser F (d).....................    8.625      06/01/25       2,152,187
  3,415   Denver, CO City & Cnty Arpt Rev Ser
          B....................................    6.900      11/15/00       3,564,748
  1,000   E-470 Pub Hwy Auth CO Rev Cap Apprec
          Sr Ser B Rfdg (MBIA Insd)............     *         09/01/22         297,920
                                                                          ------------
                                                                            10,940,123
                                                                          ------------
          CONNECTICUT  1.9%
  1,500   Connecticut St Hlth & Edl Facs Auth
          Rev Quinnipiac College Ser E (FSA
          Insd)................................    4.750      07/01/28       1,413,060
  1,500   Mashantucket Western Pequot Tribe CT
          Spl Rev Ser A, 144A - Private
          Placement (b)........................    6.400      09/01/11       1,649,370
  1,500   Mashantucket Western Pequot Tribe CT
          Spl Rev Ser A, 144A - Private
          Placement (Prerefunded @ 09/01/07)
          (b)..................................    6.400      09/01/11       1,745,760
                                                                          ------------
                                                                             4,808,190
                                                                          ------------
          GEORGIA  3.1%
  3,000   Atlanta, GA Spl Purp Fac Rev Delta
          Airls Ser B..........................    7.900      12/01/18       3,120,210
  1,000   Carroll Cnty, GA Wtr Auth Wtr & Swr
          Rev Rfdg (AMBAC Insd)................    4.750      07/01/22         950,720
  1,425   Georgia Muni Elec Auth Pwr Rev Ser A
          Rfdg (FGIC Insd).....................    5.500      01/01/12       1,540,596
  2,000   Georgia Muni Elec Auth Pwr Rev Ser Z
          Rfdg (FGIC Insd).....................    5.500      01/01/12       2,162,240
                                                                          ------------
                                                                             7,773,766
                                                                          ------------
          ILLINOIS  5.5%
  2,060   Alton, IL Hosp Fac Rev Saint
          Anthony's Hlth Cent Rfdg.............    5.875      09/01/06       2,155,234
  2,500   Chicago, IL Brd Edl Ser 1999A Chicago
          Sch Reform Brd Ser A Rfdg (FGIC
          Insd)................................    5.250      12/01/23       2,575,200
  2,000   Chicago, IL Brd Edl Ser 1999A Chicago
          Sch Reform Brd Ser A Rfgd (FGIC
          Insd)................................    5.500      12/01/26       2,131,540
</TABLE>

                                               See Notes to Financial Statements

                                       10
<PAGE>   12
                      PORTFOLIO OF INVESTMENTS (CONTINUED)

                           April 30, 1999 (Unaudited)
- --------------------------------------------------------------------------------

<TABLE>
<CAPTION>
  Par
Amount
 (000)                 Description               Coupon       Maturity    Market Value
- --------------------------------------------------------------------------------------
<S>       <C>                                    <C>          <C>         <C>
          ILLINOIS (CONTINUED)
$ 4,500   Chicago, IL O'Hare Intl Arpt Spl Fac
          Rev American Airls Inc Proj Ser A
          (d)..................................    7.875%     11/01/25    $  4,815,090
  1,635   Cook Cnty, IL Sch Dist 100 Berwyn
          South Rfdg (FSA Insd)................    8.100      12/01/15       2,245,983
                                                                          ------------
                                                                            13,923,047
                                                                          ------------
          INDIANA  3.5%
  2,000   Fort Wayne, IN Hosp Auth Hosp Rev
          Parkview Hlth Sys Inc Proj Rfdg (MBIA
          Insd)................................    4.750      11/15/28       1,826,940
  3,000   Kokomo, IN Hosp Auth Hosp Rev Saint
          Joseph Hosp & Hlth Cent Rfdg.........    6.000      08/15/02       3,150,780
  2,000   Kokomo, IN Hosp Auth Hosp Rev Saint
          Joseph Hosp & Hlth Cent Rfdg.........    6.250      08/15/05       2,188,980
    990   La Porte Cnty, IN Hosp Auth Hosp Fac
          Rev La Porte Hosp Inc Rfdg...........    5.900      03/01/01       1,021,680
    540   La Porte Cnty, IN Hosp Auth Hosp Fac
          Rev La Porte Hosp Inc Rfdg...........    6.000      03/01/02         567,070
                                                                          ------------
                                                                             8,755,450
                                                                          ------------
          IOWA  2.1%
  5,000   Muscatine, IA Elec Rev Rfdg (AMBAC
          Insd) (d)............................    6.125      01/01/12       5,347,550
                                                                          ------------
          KANSAS  2.1%
  5,000   Burlington, KS Pollutn Ctl Rev KS Gas
          & Elec Co Proj Rfdg (MBIA Insd)
          (d)..................................    7.000      06/01/31       5,392,750
                                                                          ------------
          LOUISIANA  0.5%
  1,250   Saint Charles Parish, LA Pollutn Ctl
          Rev LA Pwr & Lt Co Proj (FSA Insd)...    7.500      06/01/21       1,357,950
                                                                          ------------
          MARYLAND  5.5%
  1,275   Baltimore, MD Ctfs Partn Brd of Edl
          Admin Proj Ser A Rfdg (MBIA Insd)
          (c)..................................    5.000      04/01/15       1,262,645
  6,325   Maryland St Hlth & Higher Edl Fac
          Auth Rev Greater Baltimore Med Cent
          Rfdg (FGIC Insd).....................    5.000      07/01/13       6,365,923
  6,270   Maryland St Hlth & Higher Edl Fac
          Auth Rev Subn Hosp Rfdg (AMBAC
          Insd)................................    5.000      07/01/13       6,327,559
                                                                          ------------
                                                                            13,956,127
                                                                          ------------
</TABLE>

                                               See Notes to Financial Statements

                                       11
<PAGE>   13
                      PORTFOLIO OF INVESTMENTS (CONTINUED)

                           April 30, 1999 (Unaudited)
- --------------------------------------------------------------------------------

<TABLE>
<CAPTION>
  Par
Amount
 (000)                 Description               Coupon       Maturity    Market Value
- --------------------------------------------------------------------------------------
<S>       <C>                                    <C>          <C>         <C>
          MASSACHUSETTS  2.3%
$ 1,775   Massachusetts Muni Whsl Elec Co Pwr
          Supply Sys Rev Ser B Rfdg............    6.750%     07/01/05    $  1,919,680
  1,705   Massachusetts St Hlth & Edl Fac Auth
          Rev Vly Regl Hlth Sys Ser C Rfdg
          (Connie Lee Insd)....................    7.000      07/01/09       2,033,486
  2,000   Massachusetts St Wtr Res Auth Genl
          Ser A (FSA Insd).....................    4.750      08/01/27       1,868,760
                                                                          ------------
                                                                             5,821,926
                                                                          ------------
          MICHIGAN  3.7%
  2,745   Michigan Muni Bond Auth Rev St
          Revolving Fund.......................    5.400      10/01/14       2,878,983
  1,000   Michigan St Hosp Fin Auth Rev Detroit
          Med Cent Oblig Ser A.................    5.250      08/15/28         907,220
  1,000   Michigan St Hosp Fin Auth Rev Hosp
          Genesys Regl Med Rfdg (ACA Insd).....    5.500      10/01/18       1,005,860
  1,000   Michigan St Hosp Fin Auth Rev Hosp
          Genesys Regl Med Rfdg (ACA Insd).....    5.500      10/01/27       1,002,700
  3,500   Michigan St Strat Fd Ltd Oblig Rev
          Detroit Edison Co Ser A Rfdg (MBIA
          Insd) (c)............................    5.550      09/01/29       3,551,870
                                                                          ------------
                                                                             9,346,633
                                                                          ------------
          MINNESOTA  0.5%
  1,295   Eden Prairie, MN Multi-Family Hsg Rev
          Edendale Apts Ser A Rfdg (GNMA
          Collateralized)......................    5.550      12/01/24       1,337,865
                                                                          ------------
          MISSISSIPPI  1.8%
  1,990   Mississippi Home Corp Single Family
          Rev Mtg Ser C (GNMA
          Collateralized)......................    7.600      06/01/29       2,258,650
    985   Mississippi Home Corp Single Family
          Rev Mtg Ser D (GNMA
          Collateralized)......................    8.100      12/01/24       1,101,457
    990   Mississippi Home Corp Single Family
          Rev Mtg Ser F (GNMA
          Collateralized)......................    7.550      12/01/27       1,126,590
                                                                          ------------
                                                                             4,486,697
                                                                          ------------
          MISSOURI  1.1%
    250   Missouri St Hlth & Edl Fac Auth Hlth
          Fac Rev..............................    6.250      02/15/11         262,730
    515   Missouri St Hlth & Edl Fac Auth Hlth
          Fac Rev (Prerefunded @ 02/15/06).....    6.250      02/15/11         583,078
</TABLE>

                                               See Notes to Financial Statements

                                       12
<PAGE>   14
                      PORTFOLIO OF INVESTMENTS (CONTINUED)

                           April 30, 1999 (Unaudited)
- --------------------------------------------------------------------------------

<TABLE>
<CAPTION>
  Par
Amount
 (000)                 Description               Coupon       Maturity    Market Value
- --------------------------------------------------------------------------------------
<S>       <C>                                    <C>          <C>         <C>
          MISSOURI (CONTINUED)
$ 1,000   Missouri St Hlth & Edl Fac Auth Rev
          BJC Hlth Sys.........................    5.000%     05/15/28    $    957,900
    845   Missouri St Hsg Dev Comm Mtg Rev
          Single Family Ln Ser A (GNMA
          Collateralized)......................    7.200      09/01/26         953,016
                                                                          ------------
                                                                             2,756,724
                                                                          ------------
          NEVADA  0.9%
  2,055   Nevada Hsg Division Single Family Pgm
          Ser E (FHA Gtd)......................    6.900      10/01/11       2,196,035
                                                                          ------------
          NEW JERSEY  2.5%
  2,000   New Jersey Econ Dev Auth Dist Heating
          & Cooling Rev Trigen Trenton Ser A...    6.200      12/01/10       2,100,560
  2,500   New Jersey Econ Dev Auth Wtr Facs Rev
          NJ American Wtr Co Inc Proj Ser A
          (FGIC Insd)..........................    6.875      11/01/34       2,832,925
  1,275   New Jersey Hlth Care Fac Fin Auth Rev
          Saint Barnabas Hlth Ser C Rfdg (MBIA
          Insd) (c)............................    5.250      07/01/18       1,259,764
                                                                          ------------
                                                                             6,193,249
                                                                          ------------
          NEW YORK  11.6%
  2,520   New York City Ser B (Prerefunded @
          08/15/04)............................    7.250      08/15/19       2,941,117
  5,000   New York City Ser B1 (Prerefunded @
          08/15/04)............................    7.000      08/15/16       5,781,500
      5   New York City Ser C..................    7.250      08/15/24           5,359
  5,960   New York City Ser C (Prerefunded @
          08/15/01)............................    7.250      08/15/24       6,440,138
  2,000   New York City Ser G..................    5.750      02/01/14       2,130,700
  4,355   New York St Dorm Auth Rev Court Fac
          Lease Ser A..........................    5.500      05/15/10       4,522,406
  1,155   New York St Dorm Auth Rev Secured
          Hosp Wyckoff Hts Ser H Rfdg..........    5.200      02/15/14       1,168,514
    595   New York St Med Care Fac Fin Agy Rev
          Mental Hlth Svcs Fac Impt Ser B......    7.625      08/15/17         651,138
</TABLE>

                                               See Notes to Financial Statements

                                       13
<PAGE>   15
                      PORTFOLIO OF INVESTMENTS (CONTINUED)

                           April 30, 1999 (Unaudited)
- --------------------------------------------------------------------------------

<TABLE>
<CAPTION>
  Par
Amount
 (000)                 Description               Coupon       Maturity    Market Value
- --------------------------------------------------------------------------------------
<S>       <C>                                    <C>          <C>         <C>
          NEW YORK (CONTINUED)
$ 1,285   New York St Med Care Fac Fin Agy Rev
          Mental Hlth Svcs Fac Impt Ser B
          (Prerefunded @ 08/15/01).............    7.625%     08/15/17    $  1,420,323
  4,350   Triborough Brdg & Tunl Auth NY Rev
          Genl Purp Ser A Rfdg.................    5.000      01/01/12       4,388,150
                                                                          ------------
                                                                            29,449,345
                                                                          ------------
          NORTH CAROLINA  0.3%
  2,500   University of NC Chapel Hill Rev Util
          Sys Rfdg.............................     *         08/01/20         851,950
                                                                          ------------
          OHIO  4.6%
  1,000   Akron, OH Ctfs Partn Akron Muni
          Baseball Stadium Proj (a)............  0/6.500      12/01/07         983,490
  1,000   Cleveland, OH Arpt Spl Rev
          Continental Airls Inc Rfdg (c).......    5.700      12/01/19         984,270
  1,000   Delaware Cnty, OH Hlthcare Fac Rev
          Mtg Centrum at Willow Brook (FHA Gtd)
          (d)..................................    6.550      02/01/35       1,099,490
  2,045   Marion Cnty, OH Hosp Impt Rev Cmnty
          Hosp Rfdg............................    6.000      05/15/05       2,215,880
  1,000   Miami Cnty, OH Hosp Fac Rev Upper Vly
          Med Cent Ser C Rfdg & Impt...........    6.000      05/15/06       1,057,740
  1,300   Montgomery Cnty, OH Hosp Rev
          Grandview Hosp & Med Cent Rfdg.......    5.500      12/01/10       1,243,073
  2,970   Ohio Hsg Fin Agy Mtg Rev (GNMA
          Collateralized)......................    6.050      09/01/17       3,167,208
    885   Toledo, OH Multi-Family Hsg Impt
          Commodore Perry (FGIC Insd)..........    5.400      12/01/23         897,142
                                                                          ------------
                                                                            11,648,293
                                                                          ------------
          OKLAHOMA  1.1%
  2,750   Shawnee, OK Hosp Auth Hosp Rev
          Mid-America Hlthcare Inc Rfdg........    6.125      10/01/14       2,849,275
                                                                          ------------
          PENNSYLVANIA  11.1%
  1,000   Allegheny Cnty, PA Indl Dev Auth Rev
          Environmental Impt USX Corp Proj
          Rfdg.................................    6.100      07/15/20       1,052,950
  3,000   Delaware Cnty, PA Auth Hlth Care Rev
          Mercy Hlth Corp Southeastn Ser B
          (Prerefunded @ 11/15/05).............    6.000      11/15/07       3,309,750
</TABLE>

                                               See Notes to Financial Statements

                                       14
<PAGE>   16
                      PORTFOLIO OF INVESTMENTS (CONTINUED)

                           April 30, 1999 (Unaudited)
- --------------------------------------------------------------------------------

<TABLE>
<CAPTION>
  Par
Amount
 (000)                 Description               Coupon       Maturity    Market Value
- --------------------------------------------------------------------------------------
<S>       <C>                                    <C>          <C>         <C>
          PENNSYLVANIA (CONTINUED)
$ 2,000   Pennsylvania Intergovt Coop Auth Spl
          Tax Rev City of Philadelphia Fdg Pgm
          (FGIC Insd)..........................    5.250%     06/15/12    $  2,085,240
  6,000   Pennsylvania Intergovtl Coop Auth Spl
          Tax Rev City of Philadelphia Fdg Pgm
          (Prerefunded @ 06/15/03) (FGIC
          Insd)................................    5.350      06/15/07       6,362,280
 10,000   Pennsylvania St Ctfs Partn Ser A Rfdg
          (AMBAC Insd) (d).....................    5.400      07/01/09      10,427,500
  4,325   Philadelphia, PA Hosp & Higher Edl
          Auth Fac Hosp Rev Rfdg...............    6.350      07/01/07       4,929,029
                                                                          ------------
                                                                            28,166,749
                                                                          ------------
          TENNESSEE  1.0%
  2,485   Shelby Cnty, TN Hlth Edl & Hsg Fac
          Brd Rev Edl Fac Christian Brother
          Rfdg.................................    5.750      09/01/16       2,460,597
                                                                          ------------
          TEXAS  6.4%
  3,000   Brazos River Auth TX Rev Houston Inds
          Inc Proj Ser D Rfdg (MBIA Insd)......    4.900      10/01/15       3,035,400
  3,000   Harris Cnty, TX Toll Rd Sr Lien Rfdg
          (AMBAC Insd).........................    4.950      08/15/06       3,146,610
  2,000   Houston, TX Arpt Sys Rev Spl Fac
          Continental Airls Ser B..............    6.125      07/15/17       2,056,220
  2,000   Lower Colorado River Auth TX Rev
          Junior Lien Seventh Supply Ser (FSA
          Insd)................................    4.750      01/01/28       1,870,740
  1,000   Matagorda Cnty, TX Navigation Dist 1
          Houston Ltg Pwr Co (AMBAC Insd)......    5.125      11/01/28         988,000
  2,490   San Antonio, TX Arpt Sys Rev Rfdg
          (AMBAC Insd).........................    7.375      07/01/13       2,850,253
  1,610   Texas Hsg Agy Residential Dev Rev Mtg
          Ser D (GNMA Collateralized)..........    8.400      01/01/21       1,647,400
  2,090   Wylie, TX Indpt Sch Dist Cap Apprec
          Rfdg (PSF Gtd).......................     *         08/15/20         666,564
                                                                          ------------
                                                                            16,261,187
                                                                          ------------
</TABLE>

                                               See Notes to Financial Statements

                                       15
<PAGE>   17
                      PORTFOLIO OF INVESTMENTS (CONTINUED)

                           April 30, 1999 (Unaudited)
- --------------------------------------------------------------------------------

<TABLE>
<CAPTION>
  Par
Amount
 (000)                 Description               Coupon       Maturity    Market Value
- --------------------------------------------------------------------------------------
<S>       <C>                                    <C>          <C>         <C>
          UTAH  3.0%
$ 3,000   Intermountain Pwr Agy UT Pwr Supply
          Rev Ser B Rfdg (MBIA Insd)...........    5.750%     07/01/19    $  3,208,290
  3,000   Salt Lake City, UT Arpt Rev Delta
          Airls Inc Proj.......................    7.900      06/01/17       3,068,100
  1,180   Utah St Hsg Fin Agy Single Family Mtg
          Sr Ser D2 (FHA Gtd)..................    6.850      07/01/25       1,245,856
                                                                          ------------
                                                                             7,522,246
                                                                          ------------
          WASHINGTON  2.7%
  1,000   Grant Cnty, WA Pub Util Dist No 2
          Wanapum Hydro Elec Rev Ser B Rfdg
          (MBIA Insd) (c)......................    5.375      01/01/18         988,180
  2,030   Washington St Pub Pwr Supply Sys
          Nuclear Proj No 3 Rev Ser C Rfdg
          (MBIA Insd)..........................     *         07/01/13       1,011,102
  3,380   Washington St Pub Pwr Supply Sys
          Nuclear Proj No 3 Rev Ser C Rfdg
          (MBIA Insd)..........................     *         07/01/15       1,501,903
  3,000   Washington St Ser B..................    5.500      05/01/18       3,226,740
                                                                          ------------
                                                                             6,727,925
                                                                          ------------
          WISCONSIN  0.4%
  1,000   Wisconsin St Hlth & Edl Facs Auth Rev
          Marquette Univ (MBIA Insd)...........    4.750      06/01/28         926,510
                                                                          ------------
TOTAL INVESTMENTS  102.5%
  (Cost $237,377,564).................................................     259,503,208
LIABILITIES IN EXCESS OF OTHER ASSETS  (2.5%).........................      (6,363,476)
                                                                          ------------
NET ASSETS  100.0%....................................................    $253,139,732
                                                                          ============
</TABLE>

 * Zero coupon bond

(a) Security is a "step-up" bond where the coupon increases or steps up at a
    predetermined date.

(b) 144A securities are those which are exempt from registration under Rule 144A
    of the Securities Act of 1933. These securities may only be resold in
    transactions exempt from registration which are normally transactions with
    qualified institutional buyers.

(c) Securities purchased on a when issued or delayed delivery basis.

(d) Assets segregated as collateral for when issued or delayed delivery purchase
    commitments and open option transactions.

ACA--American Capital Access Insurance Company
AMBAC--AMBAC Indemnity Corporation
Connie Lee--Connie Lee Insurance Company
FGIC--Financial Guaranty Insurance Company
FSA--Financial Security Assurance, Inc.
MBIA--Municipal Bond Investors Assurance Corp.
PSF--Permanent School Fund Guaranty




                                               See Notes to Financial Statements

                                       16
<PAGE>   18

                      STATEMENT OF ASSETS AND LIABILITIES

                           April 30, 1999 (Unaudited)
- --------------------------------------------------------------------------------

<TABLE>
<S>                                                             <C>
ASSETS:
Total Investments (Cost $237,377,564).......................    $259,503,208
Receivables:
  Interest..................................................       4,474,984
  Investments Sold..........................................       1,514,352
                                                                ------------
      Total Assets..........................................     265,492,544
                                                                ------------
LIABILITIES:
Payables:
  Investments Purchased.....................................      10,990,933
  Custodian Bank............................................         807,268
  Income Distributions--Common and Preferred Shares.........         168,686
  Investment Advisory Fee...................................         135,479
  Administrative Fee........................................          31,264
  Affiliates................................................          27,955
Trustees' Deferred Compensation and Retirement Plans........          98,121
Accrued Expenses............................................          83,731
Options at Market Value (Net premiums received of
  $49,190)..................................................           9,375
                                                                ------------
      Total Liabilities.....................................      12,352,812
                                                                ------------
NET ASSETS..................................................    $253,139,732
                                                                ============
NET ASSETS CONSIST OF:
Preferred Shares ($.01 par value, authorized 100,000,000
  shares, 3,800 issued with liquidation preference of
  $25,000 per share)........................................    $ 95,000,000
                                                                ------------
Common Shares ($.01 par value with an unlimited number of
  shares authorized, 10,806,700 shares issued and
  outstanding)..............................................         108,067
Paid in Surplus.............................................     149,167,283
Net Unrealized Appreciation.................................      22,165,459
Accumulated Undistributed Net Investment Income.............         771,515
Accumulated Net Realized Loss...............................     (14,072,592)
                                                                ------------
      Net Assets Applicable to Common Shares................     158,139,732
                                                                ------------
NET ASSETS..................................................    $253,139,732
                                                                ============
NET ASSET VALUE PER COMMON SHARE ($158,139,732 divided
  by 10,806,700 shares outstanding).........................    $      14.63
                                                                ============
</TABLE>

                                               See Notes to Financial Statements

                                       17
<PAGE>   19

                            STATEMENT OF OPERATIONS

              For the Six Months Ended April 30, 1999 (Unaudited)
- --------------------------------------------------------------------------------

<TABLE>
<S>                                                             <C>

INVESTMENT INCOME:
Interest....................................................    $ 7,031,992
                                                                -----------
EXPENSES:
Investment Advisory Fee.....................................        819,440
Administrative Fee..........................................        189,101
Preferred Share Maintenance.................................        128,070
Trustees' Fees and Related Expenses.........................         14,389
Custody.....................................................         10,092
Legal.......................................................          6,437
Other.......................................................        112,286
                                                                -----------
    Total Expenses..........................................      1,279,815
                                                                -----------
NET INVESTMENT INCOME.......................................    $ 5,752,177
                                                                ===========
REALIZED AND UNREALIZED GAIN/LOSS:
Realized Gain/Loss:
  Investments...............................................    $   529,767
  Options...................................................         61,690
                                                                -----------
Net Realized Gain...........................................        591,457
                                                                -----------
Unrealized Appreciation/Depreciation:
  Beginning of the Period...................................     24,815,534
                                                                -----------
  End of the Period:
    Investments.............................................     22,125,644
    Options.................................................         39,815
                                                                -----------
                                                                 22,165,459
                                                                -----------
Net Unrealized Depreciation During the Period...............     (2,650,075)
                                                                -----------
NET REALIZED AND UNREALIZED LOSS............................    $(2,058,618)
                                                                ===========
NET INCREASE IN NET ASSETS FROM OPERATIONS..................    $ 3,693,559
                                                                ===========
</TABLE>

                                               See Notes to Financial Statements

                                       18
<PAGE>   20

                       STATEMENT OF CHANGES IN NET ASSETS

                  For the Six Months Ended April 30, 1999 and
                  the Year Ended October 31, 1998 (Unaudited)
- --------------------------------------------------------------------------------

<TABLE>
<CAPTION>
                                                   Six Months Ended      Year Ended
                                                    April 30, 1999    October 31, 1998
- --------------------------------------------------------------------------------------
<S>                                                <C>                <C>
FROM INVESTMENT ACTIVITIES:
Operations:
Net Investment Income.............................   $  5,752,177       $ 11,799,953
Net Realized Gain.................................        591,457            861,705
Net Unrealized Appreciation/Depreciation During
  the Period......................................     (2,650,075)         4,184,127
                                                     ------------       ------------
Change in Net Assets from Operations..............      3,693,559         16,845,785
                                                     ------------       ------------
Distributions from Net Investment Income:
  Common Shares...................................     (4,214,250)        (8,428,547)
  Preferred Shares................................     (1,503,383)        (3,351,758)
                                                     ------------       ------------
Total Distributions...............................     (5,717,633)       (11,780,305)
                                                     ------------       ------------
NET CHANGE IN NET ASSETS FROM INVESTMENT
  ACTIVITIES......................................     (2,024,074)         5,065,480
NET ASSETS:
Beginning of the Period...........................    255,163,806        250,098,326
                                                     ------------       ------------
End of the Period (Including accumulated
  undistributed net investment income of $771,515
  and $736,971, respectively).....................   $253,139,732       $255,163,806
                                                     ============       ============
</TABLE>

                                               See Notes to Financial Statements

                                       19
<PAGE>   21

                              FINANCIAL HIGHLIGHTS

  The following schedule presents financial highlights for one common share of
      the Trust outstanding throughout the periods indicated. (Unaudited)
- --------------------------------------------------------------------------------

<TABLE>
<CAPTION>

                                  Six Months Ended  -----------------------
                                   April 30, 1999     1998           1997
- ---------------------------------------------------------------------------
<S>                                 <C>             <C>             <C>
Net Asset Value, Beginning of the
  Period (a)......................  $ 14.821        $ 14.352        $13.669
                                    --------        --------        -------
  Net Investment Income...........      .532           1.092          1.096
  Net Realized and Unrealized
    Gain/Loss.....................     (.191)           .467           .675
                                    --------        --------        -------
Total from Investment
  Operations......................      .341           1.559          1.771
                                    --------        --------        -------
Less:
  Distributions from Net
    Investment Income:
    Paid to Common Shareholders...      .390            .780           .780
    Common Share Equivalent of
      Distributions Paid to
      Preferred Shareholders......      .139            .310           .308
  Distributions from Net Realized
    Gain:
    Paid to Common Shareholders...       -0-             -0-            -0-
    Common Share Equivalent of
      Distributions Paid to
      Preferred Shareholders......       -0-             -0-            -0-
                                    --------        --------        -------
Total Distributions...............      .529           1.090          1.088
                                    --------        --------        -------
Net Asset Value, End of the
  Period..........................  $ 14.633        $ 14.821        $14.352
                                    ========        ========        =======
Market Price Per Share at End of
  the Period......................  $ 13.625        $14.5625        $12.750
Total Investment Return at Market
  Price (b).......................    (3.78%)*        20.97%         15.55%
Total Return at Net Asset
  Value (c).......................     1.36%*          8.91%         11.01%
Net Assets at End of the Period
  (In millions)...................  $  253.1        $  255.2        $ 250.1
Ratio of Expenses to Average Net
  Assets Applicable to Common
  Shares**........................     1.62%           1.62%          1.65%
Ratio of Net Investment Income to
  Average Net Assets Applicable to
  Common Shares (d)...............     5.38%           5.35%          5.67%
Portfolio Turnover................       17%*            18%            23%
*  Non-Annualized
** Ratio of Expenses to Average
   Net Assets including Preferred
   Shares.........................     1.02%           1.01%          1.01%
</TABLE>

(a) Net Asset Value at January 22, 1993, is adjusted for common and preferred
    share offering costs of $.217 per common share.

(b) Total Investment Return at Market Price reflects the change in market value
    of the common shares for the period indicated with reinvestment of dividends
    in accordance with the Trust's dividend reinvestment plan.

(c) Total Return at Net Asset Value (NAV) reflects the change in value of the
    Trust's assets with reinvestment of dividends based upon NAV.

(d) Net Investment Income is adjusted for the common share equivalent of
    distributions paid to preferred shareholders.

                                       20
<PAGE>   22

- --------------------------------------------------------------------------------

<TABLE>
<CAPTION>
                                       January 22, 1993
                                        (Commencement
                                        of Investment
                                       Operations) to
Year Ended October 31,                 October 31, 1993
- -------------------------------------------------------
       1996      1995      1994        October 31, 1993
- -------------------------------------------------------
<S>   <C>       <C>       <C>          <C>
      $13.722   $12.284   $15.253          $13.808
      -------   -------   -------          -------
        1.116     1.147     1.181             .803
        (.065)    1.507    (2.927)           1.329
      -------   -------   -------          -------
        1.051     2.654    (1.746)           2.132
      -------   -------   -------          -------
         .790      .874      .938             .547
         .314      .342      .244             .140
          -0-       -0-      .034              -0-
          -0-       -0-      .007              -0-
      -------   -------   -------          -------
        1.104     1.216     1.223             .687
      -------   -------   -------          -------
      $13.669   $13.722   $12.284          $15.253
      =======   =======   =======          =======
      $11.750   $11.875   $10.750          $14.625
        5.69%    18.79%   (20.83%)           8.26%*
        5.58%    19.39%   (13.59%)          12.82%*
      $ 242.7   $ 243.3   $ 227.7          $ 259.8
        1.67%     1.77%     1.61%            1.49%
        5.91%     6.14%     6.76%            5.97%
          24%       75%      165%             114%*
        1.01%     1.06%      .99%            1.02%
</TABLE>

                 SEE NOTES TO FINANCIAL STATEMENTS

                                       21
<PAGE>   23

                         NOTES TO FINANCIAL STATEMENTS

                           April 30, 1999 (Unaudited)
- --------------------------------------------------------------------------------

1. SIGNIFICANT ACCOUNTING POLICIES

Van Kampen Strategic Sector Municipal Trust (the "Trust") is registered as a
non-diversified closed-end management investment company under the Investment
Company Act of 1940, as amended. The Trust's investment objective is to provide
a high level of current income exempt from federal income tax, consistent with
preservation of capital. The Trust will invest in a portfolio consisting
substantially of municipal obligations from those market sectors which the
Adviser feels will best meet the Trust's investment objective. The Trust
commenced investment operations on January 22, 1993.

    The following is a summary of significant accounting policies consistently
followed by the Trust in the preparation of its financial statements. The
preparation of financial statements in conformity with generally accepted
accounting principles requires management to make estimates and assumptions that
affect the reported amounts of assets and liabilities and disclosure of
contingent assets and liabilities at the date of the financial statements and
the reported amounts of revenues and expenses during the reporting period.
Actual results could differ from those estimates.

A. SECURITY VALUATION--Municipal bonds are valued by independent pricing
services or dealers using the mean of the bid and asked prices or, in the
absence of market quotations, at fair value based upon yield data relating to
municipal bonds with similar characteristics and general market conditions.
Securities which are not valued by independent pricing services are valued at
fair value using procedures established in good faith by the Board of Trustees.
Short-term securities with remaining maturities of 60 days or less are valued at
amortized cost.

B. SECURITY TRANSACTIONS--Security transactions are recorded on a trade date
basis. Realized gains and losses are determined on an identified cost basis. The
Trust may purchase and sell securities on a "when issued" or "delayed delivery"
basis with settlement to occur at a later date. The value of the security so
purchased is subject to market fluctuations during this period. The Trust will
maintain, in a segregated account with its custodian, assets having an aggregate
value at least equal to the amount of the when issued or delayed delivery
purchase commitments until payment is made.

C. INVESTMENT INCOME--Interest income is recorded on an accrual basis. Bond
premium and original issue discount are amortized over the expected life of each
applicable security.

                                       22
<PAGE>   24
                   NOTES TO FINANCIAL STATEMENTS (CONTINUED)

                           April 30, 1999 (Unaudited)
- --------------------------------------------------------------------------------

D. FEDERAL INCOME TAXES--It is the Trust'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 provision for federal income taxes is required.

    The Trust intends to utilize provisions of the federal income tax laws which
allow it to carry a realized capital loss forward for eight years following the
year of the loss and offset such losses against any future realized capital
gains. At October 31, 1998, the Trust had an accumulated capital loss
carryforward for tax purposes of $14,641,421 which will expire between October
31, 2002 and October 31, 2004. Net realized gains or losses differ for financial
and tax reporting purposes as a result of gains or losses recognized for tax
purposes on open option positions at October 31, 1998.

    At April 30, 1999, for federal income tax purposes the cost of long-term
investments is $237,377,564, the aggregate gross unrealized appreciation is
$22,426,249 and the aggregate gross unrealized depreciation is $300,605,
resulting in net unrealized appreciation on long-term investments of
$22,125,644.

E. DISTRIBUTION OF INCOME AND GAINS--The Trust declares and pays monthly
dividends from net investment income to common shareholders. Net realized gains,
if any, are distributed annually on a pro rata basis to common and preferred
shareholders. Distributions from net realized gains for book purposes may
include short-term capital gains, which are included as ordinary income for tax
purposes.

2. INVESTMENT ADVISORY AGREEMENT AND OTHER TRANSACTIONS WITH AFFILIATES

Under the terms of the Trust's Investment Advisory Agreement, Van Kampen
Investment Advisory Corp. (the "Adviser") will provide investment advice and
facilities to the Trust for an annual fee payable monthly of .65% of the average
net assets of the Trust. In addition, the Trust will pay a monthly
administrative fee to Van Kampen Funds Inc. or its affiliates' (collectively
"Van Kampen"), the Trust's Administrator, at an annual rate of .15% of the
average net assets of the Trust. The administrative services provided by the
Administrator include record keeping and reporting responsibilities with respect
to the Trust's portfolio and preferred shares and providing certain services to
shareholders.

    For the six months ended April 30, 1999, the Trust recognized expenses of
approximately $2,400, representing legal services provided by Skadden, Arps,
Slate, Meagher & Flom (Illinois), counsel to the Trust of which a trustee of the
Trust is an affiliated person.

                                       23
<PAGE>   25
                   NOTES TO FINANCIAL STATEMENTS (CONTINUED)

                           April 30, 1999 (Unaudited)
- --------------------------------------------------------------------------------

    For the six months ended April 30, 1999, the Trust recognized expenses of
approximately $52,400 representing Van Kampen's cost of providing accounting and
legal services to the Trust.

    Certain officers and trustees of the Trust are also officers and directors
of Van Kampen. The Trust does not compensate its officers or trustees who are
officers of Van Kampen.

    The Trust provides deferred compensation and retirement plans for its
trustees who are not officers of Van Kampen. Under the deferred compensation
plan, trustees may elect to defer all or a portion of their compensation to a
later date. Benefits under the retirement plan are payable for a ten-year period
and are based upon each trustee's years of service to the Trust. The maximum
annual benefit per trustee under the plan is $2,500.

3. INVESTMENT TRANSACTIONS

During the period, the cost of purchases and proceeds from sales of investments,
excluding short-term investments, were $49,395,326 and $44,373,787,
respectively.

4. DERIVATIVE FINANCIAL INSTRUMENTS

A derivative financial instrument in very general terms refers to a security
whose value is "derived" from the value of an underlying asset, reference rate
or index.

    The Trust has a variety of reasons to use derivative instruments, such as to
attempt to protect the Trust against possible changes in the market value of its
portfolio and to manage the portfolio's effective yield, maturity and duration.
All of the Trust's portfolio holdings, including derivative instruments, are
marked to market each day with the change in value reflected in unrealized
appreciation/depreciation. Upon disposition, a realized gain or loss is
recognized accordingly, except when exercising an option contract or taking
delivery of a security underlying a futures contract. In these instances, the
recognition of gain or loss is postponed until the disposal of the security
underlying the option or futures contract.

    Summarized below are the specific types of derivative financial instruments
used by the Trust.

A. OPTION CONTRACTS--An option contract gives the buyer the right, but not the
obligation to buy (call) or sell (put) an underlying item at a fixed exercise
price during a specified period. These contracts are generally used by the Trust
to manage the portfolio's effective maturity and duration.

                                       24
<PAGE>   26
                   NOTES TO FINANCIAL STATEMENTS (CONTINUED)

                           April 30, 1999 (Unaudited)
- --------------------------------------------------------------------------------

    Transactions in options for the six months ended April 30, 1999, were as
follows:

<TABLE>
<CAPTION>
                                                   CONTRACTS   PREMIUM
- -----------------------------------------------------------------------
<S>                                                <C>         <C>
Outstanding at October 31, 1998..................     100      $ 61,690
  Options Written and Purchased (Net)............     100        49,190
  Options Expired (Net)..........................    (100)      (61,690)
                                                     ----      --------
Outstanding at April 30, 1999....................     100      $ 49,190
                                                     ====      ========
</TABLE>

    The related futures contracts of the outstanding option transactions as of
April 30, 1999, and the description and market value is as follows:

<TABLE>
<CAPTION>
                                                                    MARKET
                                               EXPIRATION MONTH/   VALUE OF
                                   CONTRACTS    EXERCISE PRICE     OPTIONS
- ---------------------------------------------------------------------------
<S>                                <C>         <C>                 <C>
Municipal Bond Index
  June 1999--Written Calls
  (Current notional value of
  $123,188 per contract)..........    100          June/128        $(9,375)
                                      ===                          =======
</TABLE>

B. FUTURES CONTRACTS--A futures contract is an agreement involving the delivery
of a particular asset on a specified future date at an agreed upon price. The
Trust generally invests in futures on U.S. Treasury Bonds and the Municipal Bond
Index and typically closes the contract prior to the delivery date. These
contracts are generally used to manage the portfolio's effective maturity and
duration. Upon entering into futures contracts, the Trust maintains, in a
segregated account with its custodian, securities with a value equal to its
obligation under the futures contracts. During the period the futures contract
is open, payments are received from or made to the broker based upon changes in
the value of the contract (the variation margin).
    There were no transactions in futures contracts during the six months ended
April 30, 1999.

5. PREFERRED SHARES

Effective with the close of business on April 23, 1999, the liquidation
preference on the Trust's preferred shares decreased from $50,000 to $25,000 per
share. This decrease was effected by means of a 2 for 1 stock split that doubled
the Trust's number of outstanding preferred shares. The total liquidation value
for the Trust was unchanged. As of April 30, 1999, the Trust has outstanding
3,800 Auction Preferred Shares ("APS") in

                                       25
<PAGE>   27
                   NOTES TO FINANCIAL STATEMENTS (CONTINUED)

                           April 30, 1999 (Unaudited)
- --------------------------------------------------------------------------------

two series. Series A contains 2,000 shares while Series B contains 1,800 shares.
Dividends are cumulative and the dividend rate for both Series is currently
reset every 28 days through an auction process. At April 30, 1999, the average
rate in effect was 3.150%. During the six months ended April 30, 1999, the rates
ranged from 2.970% to 3.600%.

    The Trust pays annual fees equivalent to .25% of the preferred share
liquidation value for the remarketing efforts associated with the preferred
auctions. These fees are included as a component of Preferred Share Maintenance
expense.

    The APS are redeemable at the option of the Trust in whole or in part at the
liquidation value of $25,000 per share plus accumulated and unpaid dividends.
The Trust is subject to certain asset coverage tests and the APS are subject to
mandatory redemption if the tests are not met.

                                       26
<PAGE>   28

                           DIVIDEND REINVESTMENT PLAN

The Trust offers a Dividend Reinvestment Plan (the "Plan") pursuant to which
Common Shareholders who are participants in the Plan may have dividends and
capital gains distributions automatically reinvested in Common Shares of the
Trust. All Common Shareholders are deemed to be participants in the Plan unless
they specifically elect not to participate. Common Shareholders who elect not to
participate in the Plan will receive all distributions of dividends and capital
gains in cash paid by check mailed directly to the Common Shareholder by the
Trust's dividend disbursing agent.

HOW THE PLAN WORKS

    State Street Bank and Trust Company, as your Plan Agent, serves as agent for
the Common Shareholders in administering the Plan. After the Trust declares a
dividend or determines to make a capital gains distribution, the Plan Agent
will, as agent for the participants, receive the cash payment and use it to buy
Common Shares in the open market, on the New York Stock Exchange or elsewhere,
for the participants' accounts. The Trust will not issue any new Common Shares
in connection with the Plan. All reinvestments are in full and fractional Common
Shares, carried to three decimal places.
    Experience under the Plan may indicate that changes are desirable.
Accordingly, the Trust reserves the right to amend or terminate the Plan as
applied to any dividend or distribution paid subsequent to written notice of the
change sent to all Common Shareholders of the Trust at least 90 days before the
record date for the dividend or distribution. The Plan also may be amended or
terminated by the Plan Agent by at least 90 days written notice to all Common
Shareholders of the Trust.

COSTS OF THE PLAN

The Plan Agent's fees for the handling of the reinvestment of dividends and
distributions will be paid by the Trust. However, each participant will pay a
pro rata share of brokerage commissions incurred with respect to the Plan
Agent's open market purchases in connection with the reinvestment of dividends
and distributions. No other charges will be made to participants for reinvesting
dividends or capital gains distributions, except for certain brokerage
commissions, as described above.

TAX IMPLICATIONS

You will receive tax information annually for your personal records and to help
you prepare your federal income tax return. The automatic reinvestment of
dividends and capital gains distributions does not relieve you of any income tax
which may be payable on dividends or distributions.

RIGHT TO WITHDRAW

All Common Shareholders of the Trust are deemed to be participants in the Plan
unless they specifically elect not to participate. You may withdraw from the
Plan at any time by calling 1-800-341-2929 or by writing State Street Bank and
Trust Company, P.O. Box 8200, Boston, MA 02266-8200. If you withdraw, you will
receive, without charge, a share certificate issued in your name for all full
Common Shares credited to your account under the Plan and a cash payment will be
made for any fractional Common Share credited to your account under the Plan.
You may again elect to participate in the Plan at any time by calling
1-800-341-2929 or writing to the Trust at:

                             Van Kampen Funds Inc.
                             Attn: Closed-End Funds
                              2800 Post Oak Blvd.
                               Houston, TX 77056

                                       27
<PAGE>   29

                  VAN KAMPEN STRATEGIC SECTOR MUNICIPAL TRUST

BOARD OF TRUSTEES

DAVID C. ARCH

ROD DAMMEYER

HOWARD J KERR

DENNIS J. MCDONNELL*--Chairman

STEVEN MULLER

THEODORE A. MYERS

DON G. POWELL*

HUGO F. SONNENSCHEIN

WAYNE W. WHALEN*

OFFICERS

DENNIS J. MCDONNELL*
President

A. THOMAS SMITH, III*
Vice President and Secretary

JOHN L. SULLIVAN*
Vice President, Treasurer and
Chief Financial Officer

CURTIS W. MORELL*
Vice President and Chief Accounting Officer

TANYA M. LODEN*
Controller

PETER W. HEGEL*
EDWARD C. WOOD, III*
Vice Presidents

INVESTMENT ADVISER

VAN KAMPEN INVESTMENT ADVISORY CORP.
1 Parkview Plaza
P.O. Box 5555
Oakbrook Terrace, IL 60181-5555

CUSTODIAN AND
TRANSFER AGENT

STATE STREET BANK
AND TRUST COMPANY
225 Franklin Street
P.O. Box 1713
Boston, Massachusetts 02105

LEGAL COUNSEL

SKADDEN, ARPS, SLATE,
MEAGHER & FLOM (ILLINOIS)
333 West Wacker Drive
Chicago, Illinois 60606

INDEPENDENT ACCOUNTANTS

KPMG LLP
303 East Wacker Drive
Chicago, Illinois 60601

* "Interested" persons of the Trust, as defined in the Investment Company Act of
  1940.

(C) Van Kampen Funds Inc., 1999 All rights reserved.

(SM) denotes a service mark of Van Kampen Funds Inc.

                                       28
<PAGE>   30

                         YEAR 2000 READINESS DISCLOSURE

Like other mutual funds, financial and business organizations and individuals
around the world, the Trust could be adversely affected if the computer systems
used by the Trust's investment adviser and other service providers do not
properly process and calculate date-related information and data from and after
January 1, 2000. This is commonly known as the "Year 2000 Problem." The Trust's
investment adviser is taking steps that it believes are reasonably designed to
address the Year 2000 Problem with respect to computer systems that it uses and
to obtain reasonable assurances that comparable steps are being taken by the
Trust's other major service providers. At this time, there can be no assurances
that these steps will be sufficient to avoid any adverse impact to the Trust. In
addition, the Year 2000 Problem may adversely affect the markets and the issuers
of securities in which the Trust may invest that, in turn, may adversely affect
the net asset value of the Trust. Improperly functioning trading systems may
result in settlement problems and liquidity issues. In addition, corporate and
governmental data processing errors may result in production problems for
individual companies or issuers and overall economic uncertainty. Earnings of
individual issuers will be affected by remediation costs, which may be
substantial and may be reported inconsistently in U.S. and foreign financial
statements. Accordingly, the Trust's investments may be adversely affected. The
statements above are subject to the Year 2000 Information and Readiness
Disclosure Act, which may limit the legal rights regarding the use of such
statements in the case of dispute.

<TABLE> <S> <C>

<ARTICLE> 6
<SERIES>
   <NUMBER> 11
   <NAME> STRAT SECT
<MULTIPLIER> 1

<S>                             <C>
<PERIOD-TYPE>                   6-MOS
<FISCAL-YEAR-END>                          OCT-31-1999
<PERIOD-START>                             NOV-01-1998
<PERIOD-END>                               APR-30-1999
<INVESTMENTS-AT-COST>                      237,377,564
<INVESTMENTS-AT-VALUE>                     259,503,208
<RECEIVABLES>                                5,989,336
<ASSETS-OTHER>                                       0
<OTHER-ITEMS-ASSETS>                                 0
<TOTAL-ASSETS>                             265,492,544
<PAYABLE-FOR-SECURITIES>                    10,990,933
<SENIOR-LONG-TERM-DEBT>                              0
<OTHER-ITEMS-LIABILITIES>                    1,361,879
<TOTAL-LIABILITIES>                         12,352,812
<SENIOR-EQUITY>                             95,000,000
<PAID-IN-CAPITAL-COMMON>                   149,275,350
<SHARES-COMMON-STOCK>                       10,806,700
<SHARES-COMMON-PRIOR>                       10,806,700
<ACCUMULATED-NII-CURRENT>                      771,515
<OVERDISTRIBUTION-NII>                               0
<ACCUMULATED-NET-GAINS>                   (14,072,592)
<OVERDISTRIBUTION-GAINS>                             0
<ACCUM-APPREC-OR-DEPREC>                    22,165,459
<NET-ASSETS>                               253,139,732
<DIVIDEND-INCOME>                                    0
<INTEREST-INCOME>                            7,031,992
<OTHER-INCOME>                                       0
<EXPENSES-NET>                             (1,279,815)
<NET-INVESTMENT-INCOME>                      5,752,177
<REALIZED-GAINS-CURRENT>                       591,457
<APPREC-INCREASE-CURRENT>                  (2,650,075)
<NET-CHANGE-FROM-OPS>                        3,693,559
<EQUALIZATION>                                       0
<DISTRIBUTIONS-OF-INCOME>                  (5,717,633)
<DISTRIBUTIONS-OF-GAINS>                             0
<DISTRIBUTIONS-OTHER>                                0
<NUMBER-OF-SHARES-SOLD>                              0
<NUMBER-OF-SHARES-REDEEMED>                          0
<SHARES-REINVESTED>                                  0
<NET-CHANGE-IN-ASSETS>                     (2,024,074)
<ACCUMULATED-NII-PRIOR>                        736,971
<ACCUMULATED-GAINS-PRIOR>                 (14,664,049)
<OVERDISTRIB-NII-PRIOR>                              0
<OVERDIST-NET-GAINS-PRIOR>                           0
<GROSS-ADVISORY-FEES>                          819,440
<INTEREST-EXPENSE>                                   0
<GROSS-EXPENSE>                              1,279,815
<AVERAGE-NET-ASSETS>                       254,223,298
<PER-SHARE-NAV-BEGIN>                           14.821
<PER-SHARE-NII>                                  0.532
<PER-SHARE-GAIN-APPREC>                        (0.191)
<PER-SHARE-DIVIDEND>                           (0.529)
<PER-SHARE-DISTRIBUTIONS>                        0.000
<RETURNS-OF-CAPITAL>                             0.000
<PER-SHARE-NAV-END>                             14.633
<EXPENSE-RATIO>                                   1.62


</TABLE>


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