UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM N-Q QUARTERLY SCHEDULE OF PORTFOLIO HOLDINGS OF REGISTERED MANAGEMENT INVESTMENT COMPANIES Investment Company Act file number 811-6567 Van Kampen Municipal Opportunity Trust -------------------------------------------------------------------------------- (Exact name of registrant as specified in charter) 1221 Avenue of the Americas, New York, New York 10020 -------------------------------------------------------------------------------- (Address of principal executive offices) (Zip code) Ronald Robison 1221 Avenue of the Americas, New York, New York 10020 -------------------------------------------------------------------------------- (Name and address of agent for service) Registrant's telephone number, including area code: 212-762-4000 Date of fiscal year end: 10/31 Date of reporting period: 7/31/05 Item 1. Schedule of Investments. The Trust's schedule of investments as of the close of the reporting period prepared pursuant to Rule 12-12 of Regulation S-X is as follows: VAN KAMPEN MUNICIPAL OPPORTUNITY TRUST PORTFOLIO OF INVESTMENTS JULY 31, 2005 (UNAUDITED) PAR AMOUNT (000) DESCRIPTION COUPON MATURITY VALUE MUNICIPAL BONDS 159.1% ALABAMA 1.8% 2,000 Jefferson Cnty, AL Ltd Oblig Sch Wt Ser A 5.250 01/01/23 2,135,900 2,375 Marshall Cnty, AL Hlthcare Ser C 6.000 01/01/32 2,555,809 5 Mobile, AL Indl Dev Brd Solid Waste Disp Rev Mobile Energy Svc Co Proj Rfdg 6.950 01/01/20 94 -------------- 4,691,803 -------------- ARIZONA 0.6% 1,500 Maricopa Cnty, AZ Stad Dist Rfdg (AMBAC Insd) 5.375 06/01/19 1,650,030 -------------- ARKANSAS 1.3% 3,035 Fort Smith, AR Wtr & Swr Rev Ser A Rfdg (FSA Insd) 5.250 10/01/16 3,308,909 -------------- CALIFORNIA 17.6% 2,000 California Edl Fac Auth Rev Occidental College Ser A (MBIA Insd) 5.000 10/01/30 2,123,580 2,500 California Edl Fac Auth Rev Pomona College Ser A 5.000 07/01/45 2,631,800 1,000 California Pollutn Ctl Fin Auth Solid Waste Disp Rev Waste Mgmt Inc Proj Ser B (AMT) 5.000 07/01/27 989,450 30 California Rural Home Mtg Fin Auth Single Family Mtg Rev Ser C (AMT) (GNMA Collateralized) 7.800 02/01/28 30,704 4,500 California St (AMBAC Insd) 5.125 10/01/27 4,702,815 5,500 California St Dept Wtr Res Pwr Ser A (AMBAC Insd) 5.500 05/01/16 6,138,330 2,000 California St Dept Wtr Res Pwr Ser A 5.750 05/01/17 2,222,460 3,500 California St Pub Wks Brd Lease Rev Dept Corrections Ser C 5.250 06/01/28 3,719,380 2,000 California St Pub Wks Brd Lease Rev Dept Mental Hlth Coalinga Ser A 5.000 06/01/25 2,108,700 1,250 California Statewide Cmntys Dev Auth Rev Daughters of Charity Hlth Ser A 5.250 07/01/30 1,315,112 5,000 Contra Costa, CA Home Mtg Fin Auth Home Mtg Rev (Escrowed to Maturity) (MBIA Insd) * 09/01/17 2,392,850 4,000 Foothill/Eastern Corridor Agy CA Toll Rd Rev Conv Cap Apprec Sr Lien Ser A (Escrowed to Maturity) 7.050 01/01/10 4,650,800 1,500 Golden St, CA Tobacco Securitization Corp Tobacco Settlement Rev Enhanced Asset Bkd Ser A (a) 5.000 06/01/45 1,541,460 1,600 Long Beach, CA Bd Fin Auth Rev Redev Hsg & Gas Util Fin Ser A1 (AMBAC Insd) 5.000 08/01/40 1,659,184 PAR AMOUNT (000) DESCRIPTION COUPON MATURITY VALUE 1,500 Los Angeles Cnty, CA Met Tran Auth Sales Tax Rev Prop C Second Tier Sr Ser A Rfdg (AMBAC Insd) 5.000 07/01/23 1,572,075 7,500 San Jose, CA Fin Auth Lease Rev Civic Ctr Proj Ser B (AMBAC Insd) 5.000 06/01/32 7,785,750 -------------- 45,584,450 -------------- COLORADO 2.8% 1,505 Arapahoe Cnty, CO Ctfs Partn Rfdg (FSA Insd) (b) 5.250 12/01/15 1,668,353 1,000 Colorado Hlth Fac Auth Rev Hosp Portercare Adventist Hlth 6.500 11/15/31 1,107,700 1,000 Colorado Hsg Fin Auth Multi-Family Hsg Ins Mtg Ser B2 (AMT) (FHA Gtd) 5.800 10/01/28 1,029,360 126 Colorado Hsg Fin Auth Single Family Pgm Sr Ser A2 (AMT) 7.250 05/01/27 127,279 100 Colorado Hsg Fin Auth Single Family Pgm Sr Ser C1 (AMT) 7.550 11/01/27 101,051 1,000 Denver, CO City & Cnty Arpt Rev Ser B (AMT) (MBIA Insd) 6.250 11/15/07 1,057,310 1,005 Greeley, CO Multi-Family Rev Hsg Mtg Creek Stone (AMT) (FHA Gtd) 5.950 07/01/28 1,041,793 1,000 Highlands Ranch Metro Dist No 2 CO Rfdg (FSA Insd) 6.500 06/15/11 1,159,700 -------------- 7,292,546 -------------- CONNECTICUT 2.1% 3,250 Connecticut St Spl Oblig Pkg Rev Bradley Intl Arpt Ser A (AMT) (ACA Insd) 6.600 07/01/24 3,515,102 1,000 Mashantucket Western Pequot Tribe CT Spl Rev Ser A, 144A - Private Placement (c) 6.400 09/01/11 1,046,910 840 Mashantucket Western Pequot Tribe CT Spl Rev Ser A, 144A - Private Placement (Escrowed to Maturity) (c) 6.500 09/01/06 873,978 -------------- 5,435,990 -------------- DISTRICT OF COLUMBIA 2.0% 5,000 Metropolitan Washington DC Arpt Auth Sys Ser A (AMT) (FGIC Insd) 5.250 10/01/32 5,236,750 -------------- FLORIDA 2.3% 230 Escambia Cnty, FL Hlth Fac Auth Rev FL Hlthcare Fac Ln VHA Pgm (AMBAC Insd) 5.950 07/01/20 232,072 1,000 Lakeland, FL Hosp Sys Rev Lakeland Regl Hlth Sys 5.500 11/15/32 1,054,000 2,100 Miami-Dade Cnty, FL Aviation Miami Intl Arpt (AMT) (FGIC Insd) 5.375 10/01/27 2,230,473 2,375 North Broward, FL Hosp Dist Rev Impt 6.000 01/15/31 2,549,467 -------------- 6,066,012 -------------- GEORGIA 6.7% 1,677 Fulton Cnty, GA Lease Rev (Acquired 12/23/1994, Cost $1,676,876) (d) 7.250 06/15/10 1,744,974 7,000 Georgia Muni Elec Auth Pwr Rev Ser A (MBIA Insd) 6.500 01/01/20 8,828,400 6,245 Municipal Elec Auth GA Combustion Turbine Proj Ser A (MBIA Insd) 5.250 11/01/16 6,861,944 PAR AMOUNT (000) DESCRIPTION COUPON MATURITY VALUE -------------- 17,435,318 -------------- ILLINOIS 3.2% 45 Chicago, IL Single Family Mtg Rev Ser A (AMT) (GNMA Collateralized) 7.000 09/01/27 45,185 40 Chicago, IL Single Family Mtg Rev Ser B (AMT) (GNMA Collateralized) 7.625 09/01/27 40,176 3,000 Illinois Fin Auth Rev Northwestern Mem Hosp Ser A 5.500 08/15/43 3,235,380 3,630 Kendall, Kane & Will Cntys, IL Cmnty Sch Dist 308 Ser B (FGIC Insd) (b) 5.250 10/01/20 3,952,780 1,000 Metropolitan Pier & Expo Auth IL Dedicated St Tax Rev McCormick Pl Expn Proj Rfdg (FGIC Insd) 5.500 12/15/24 1,087,800 -------------- 8,361,321 -------------- INDIANA 3.8% 3,270 Allen Cnty, IN War Mem Coliseum Ser A (AMBAC Insd) (b) 5.500 11/01/16 3,626,659 4,120 Indiana Hlth Fac Fin Auth Hosp Rev Cmnty Proj Ser A (AMBAC Insd) 5.000 05/01/35 4,324,105 1,000 Indiana St Dev Fin Auth Rev Exempt Fac Conv Rfdg (AMT) 5.950 08/01/30 1,031,760 1,210 North Adams, IN Cmnty Sch Cap Apprec First Mtg (FSA Insd) (b) * 01/15/16 767,455 -------------- 9,749,979 -------------- IOWA 0.8% 1,890 Des Moines, IA Pub Pkg Sys Rev Ser A (FGIC Insd) (b) 5.750 06/01/17 2,080,777 -------------- KENTUCKY 1.4% 1,475 Kenton Cnty, KY Arpt Brd Rev Cincinnati/Northn KY Intl Arpt Ser A Rfdg (AMT) (MBIA Insd) 6.200 03/01/08 1,577,571 1,995 Kentucky Hsg Corp Hsg Rev Ser F (AMT) (FNMA Collateralized) 5.450 01/01/32 2,061,813 -------------- 3,639,384 -------------- LOUISIANA 1.9% 2,500 Lafayette, LA Utils Rev (MBIA Insd) 5.250 11/01/23 2,730,500 1,990 Louisiana Hsg Fin Agy Rev Azalea Estates Ser A Rfdg (AMT) (GNMA Collateralized) 5.375 10/20/39 2,083,470 -------------- 4,813,970 -------------- MARYLAND 1.8% 1,050 Maryland St Econ Dev Corp Univ MD College Pk Proj 5.625 06/01/35 1,088,745 1,000 Maryland St Hlth & Higher Ed Fac Auth Rev Medstar Hlth Rfdg 5.375 08/15/24 1,046,990 2,350 Northeast, MD Waste Disp Auth Rfdg (AMT) (AMBAC Insd) 5.500 04/01/16 2,557,293 -------------- 4,693,028 -------------- MASSACHUSETTS 6.1% 2,500 Massachusetts St Dev Fin Agy Rev Boston Univ Ser T-1 (AMBAC Insd) 5.000 10/01/39 2,624,525 PAR AMOUNT (000) DESCRIPTION COUPON MATURITY VALUE 2,400 Massachusetts St Dev Fin Agy Rev College Pharmacy & Allied Hlth Ser D 5.000 07/01/35 2,489,256 3,000 Massachusetts St Dev Fin Agy Semass Sys Ser A (MBIA Insd) 5.625 01/01/16 3,290,610 1,000 Massachusetts St Hlth & Ed Fac Auth Rev Part Hlthcare Sys Ser C 5.750 07/01/32 1,107,430 3,000 Massachusetts St Sch Bldg Auth Sales Tax Rev Ser A (FSA Insd) (a) 5.000 08/15/21 3,224,250 3,000 Massachusetts St Wtr Res Auth Gen Ser J (FSA Insd) 5.000 08/01/32 3,126,780 -------------- 15,862,851 -------------- MICHIGAN 3.5% 3,505 Detroit, MI Wtr Supply Sys Ser B (MBIA Insd) (b) 5.250 07/01/18 3,852,275 1,500 Kent Hosp Fin Auth MI Rev Met Hosp Proj Ser A 6.250 07/01/40 1,658,925 2,000 Michigan St Ctf Part (AMBAC Insd) 5.500 06/01/27 2,158,980 1,215 Zeeland, MI Pub Schs Sch Bldg & Site (MBIA Insd) (b) 5.250 05/01/19 1,327,594 -------------- 8,997,774 -------------- MINNESOTA 0.4% 10 Chaska, MN Elec Rev Ser A 6.100 10/01/30 11,122 990 Chaska, MN Elec Rev Ser A (Prerefunded @ 10/01/10) 6.100 10/01/30 1,119,502 -------------- 1,130,624 -------------- MISSISSIPPI 0.5% 830 Mississippi Home Corp Single Family Rev Mtg Ser C (AMT) (GNMA Collateralized) 7.600 06/01/29 847,181 355 Mississippi Home Corp Single Family Rev Mtg Ser F (AMT) (GNMA Collateralized) 7.550 12/01/27 363,698 -------------- 1,210,879 -------------- MISSOURI 2.2% 2,150 Cape Girardeau Cnty, MO Indl Southeast MO Hosp Assoc 5.500 06/01/22 2,237,333 35 Saint Louis Cnty, MO Single Family Mtg Rev (MBIA Insd) 6.900 04/01/16 35,692 3,000 Sikeston, MO Elec Rev Rfdg (MBIA Insd) (e) 6.200 06/01/10 3,317,160 -------------- 5,590,185 -------------- NEBRASKA 1.0% 2,500 Nebraska Pub Pwr Dist Gen Ser A (AMBAC Insd) 5.000 01/01/35 2,618,925 -------------- NEVADA 4.8% 7,500 Clark Cnty, NV Arpt Rev Sub Lien Ser A-2 (FGIC Insd) 5.000 07/01/36 7,814,775 3,000 Clark Cnty, NV Indl Dev Rev Southwest Gas Corp Proj Ser A (AMT) (AMBAC Insd) 5.250 07/01/34 3,163,950 1,500 Reno, NV Sr Lien Retrac Reno Trans Proj (AMBAC Insd) 5.125 06/01/32 1,568,850 -------------- 12,547,575 -------------- NEW HAMPSHIRE 1.1% 2,500 New Hampshire Hlth & Ed Fac Univ Sys of NH (AMBAC Insd) 5.500 07/01/15 2,775,000 -------------- PAR AMOUNT (000) DESCRIPTION COUPON MATURITY VALUE NEW JERSEY 15.1% 2,000 Garden St Preservation Tr NJ Ser A (FSA Insd) 5.250 11/01/18 2,205,220 2,000 New Jersey Econ Dev Auth Cigarette Tax 5.750 06/15/34 2,133,680 5,000 New Jersey Econ Dev Auth Mtr Veh Rev Ser A (MBIA Insd) 5.000 07/01/22 5,335,200 20,000 New Jersey Econ Dev Auth St Contract Econ Recovery (MBIA Insd) 5.900 03/15/21 24,084,000 5,000 New Jersey St Ed Fac Auth Higher Ed Cap Impt Ser A (AMBAC Insd) 5.250 09/01/21 5,440,200 -------------- 39,198,300 -------------- NEW MEXICO 0.3% 680 New Mexico Mtg Fin Auth Single Family Mtg Pgm Ser G (AMT) (GNMA Collateralized) 7.250 07/01/26 688,276 -------------- NEW YORK 12.6% 6,000 New York City Muni Wtr Fin Auth Wtr & Swr Sys Rev Ser D 5.000 06/15/39 6,295,920 9,600 New York City Ser A 7.000 08/01/07 10,121,760 500 New York St Dorm Auth Rev Mental Hlth Ser A 5.750 08/15/12 528,380 5 New York St Dorm Auth Rev Mental Hlth Svcs Fac Ser A (Prerefunded @ 02/15/07) 5.750 08/15/12 5,316 1,445 New York St Dorm Auth Rev Secd Hosp North Gen Hosp Rfdg (MBIA Insd) 5.750 02/15/17 1,616,738 2,040 New York St Dorm Auth Rev Secd Hosp North Gen Hosp Rfdg 5.750 02/15/18 2,271,173 1,500 New York St Dorm Auth Revs Upstate Cmnty Colleges Ser B 5.250 07/01/20 1,619,040 1,000 New York St Dorm Auth Revs Upstate Cmnty Colleges Ser B 5.250 07/01/21 1,077,040 3,780 New York St Mtg Agy Rev Ser 101 (AMT) 5.400 04/01/32 3,909,654 4,000 Port Auth NY & NJ Spl Oblig Rev Spl Proj JFK Intl Arpt Terminal 6 (AMT) (MBIA Insd) 5.750 12/01/22 4,297,000 1,000 Westchester, NY Tobacco Asset Securization Corp 5.125 06/01/38 1,013,670 -------------- 32,755,691 -------------- NORTH CAROLINA 7.4% 1,500 North Carolina Eastn Muni Pwr Agy Pwr Sys Rev Ser D 6.700 01/01/19 1,669,455 11,000 North Carolina Muni Pwr Agy No 1 Catawba Elec Rev Rfdg (MBIA Insd) 6.000 01/01/12 12,511,510 3,000 North Carolina Muni Pwr Agy Ser A (MBIA Insd) 5.250 01/01/19 3,266,790 1,700 Raleigh Durham, NC Arpt Auth Rev Ser A (AMBAC Insd) 5.000 05/01/30 1,794,588 -------------- 19,242,343 -------------- NORTH DAKOTA 0.2% 470 North Dakota St Hsg Fin Agy Ser C (AMT) 5.550 07/01/29 480,537 -------------- OHIO 2.2% 385 Akron, OH Ctf Part Akron Muni Baseball Stad Proj (Prerefunded @ 12/01/06) 6.500 12/01/07 407,603 500 Cuyahoga Cnty, OH Hosp Fac Rev Canton Inc Proj 7.500 01/01/30 564,130 3,000 Lucas Cnty, OH Hosp Rev Promedica Hlthcare Oblig Rfdg (MBIA Insd) 6.000 11/15/07 3,172,980 PAR AMOUNT (000) DESCRIPTION COUPON MATURITY VALUE 1,500 Mahoning Cnty, OH Hosp Fac Forum Hlth Oblig Group Ser A 6.000 11/15/32 1,631,265 -------------- 5,775,978 -------------- OKLAHOMA 2.7% 4,770 McAlester, OK Pub Wks Auth Util Cap Apprec (FSA Insd) * 02/01/34 1,227,130 1,000 Oklahoma City, OK Pub Ppty Auth Hotel Tax Rev (FGIC Insd) 5.250 10/01/29 1,087,430 1,000 Tulsa Cnty, OK Pub Fac Auth Cap Impt Rev (AMBAC Insd) 6.250 11/01/22 1,128,020 3,140 Tulsa, OK Indl Auth Hosp Rev Hillcrest Med Cent Proj Rfdg (Escrowed to Maturity) (Connie Lee Insd) (b) 6.250 06/01/08 3,409,789 -------------- 6,852,369 -------------- OREGON 3.2% 2,500 Oregon Hlth Sciences Univ Insd Ser A (MBIA Insd) 5.250 07/01/22 2,725,700 5,000 Oregon St Dept Admin Ser C Rfdg (MBIA Insd) 5.250 11/01/18 5,445,200 -------------- 8,170,900 -------------- PENNSYLVANIA 8.1% 2,295 Allegheny Vly, PA Sch Dist Ser A (MBIA Insd) 5.000 11/01/24 2,442,614 1,900 Harrisburg, PA Auth Res Gtd Sub Ser D-2 (FSA Insd) 5.000 12/01/33 2,043,545 1,000 Harrisburg, PA Cap Apprec Nts Ser F Rfdg (AMBAC Insd) * 03/15/15 667,800 1,865 Harrisburg, PA Cap Apprec Ser D Rfdg (AMBAC Insd) (b) * 09/15/15 1,219,617 1,865 Harrisburg, PA Cap Apprec Ser D Rfdg (AMBAC Insd) * 03/15/16 1,184,406 4,000 Hempfield, PA Area Sch Dist Westmoreland Cnty Ser A (FGIC Insd) 5.250 03/15/20 4,390,240 3,000 Susquehanna Area Regl Arpt Auth PA Ser A (AMT) (AMBAC Insd) 5.375 01/01/21 3,211,440 5,415 Susquehanna Area Regl Arpt Auth PA Ser A (AMT) (AMBAC Insd) (b) 5.375 01/01/22 5,782,408 -------------- 20,942,070 -------------- SOUTH CAROLINA 2.1% 2,500 Easley, SC Util Rev Impt Comb Rfdg (FSA Insd) 5.000 12/01/34 2,645,750 2,500 South Carolina Jobs Econ Dev Auth Indl Rev Elec & Gas Co Proj Ser A (AMBAC Insd) 5.200 11/01/27 2,687,800 -------------- 5,333,550 -------------- SOUTH DAKOTA 0.6% 1,375 Deadwood, SD Ctfs Partn (ACA Insd) 6.375 11/01/20 1,469,325 -------------- TENNESSEE 1.5% 1,415 Bristol, TN Elec Rev Sys (AMBAC Insd) 5.000 09/01/35 1,492,372 1,000 Elizabethton, TN Hlth & Ed Fac Brd Rev Hosp First Mtg Ser B Impt & Rfdg 8.000 07/01/33 1,201,200 1,000 Johnson City, TN Hlth & Ed Fac Brd Hosp Rev First Mtg Mtn St Hlth Ser A Rfdg (MBIA Insd) 7.500 07/01/25 1,254,130 -------------- 3,947,702 -------------- PAR AMOUNT (000) DESCRIPTION COUPON MATURITY VALUE TEXAS 19.8% 20 Austin, TX Utility Sys Rev Comb Rfdg (Escrowed to Maturity) (AMBAC Insd) 6.500 11/15/05 20,226 2,545 Dallas Cnty, TX Cmnty College Fin Sys (AMBAC Insd) (b) 5.375 02/15/17 2,742,187 2,500 Dallas, TX Wtrwks & Swr Sys Rev & Impt Rfdg (FSA Insd) 5.375 10/01/18 2,756,275 4,000 Dallas-Fort Worth, TX Intl Arpt Rev Jt Ser A (AMT) (FSA Insd) 5.500 11/01/21 4,337,560 1,500 Dallas-Fort Worth, TX Intl Arpt Rev Jt Ser A (AMT) (FGIC Insd) 5.750 11/01/30 1,616,580 5,500 Dallas-Fort Worth, TX Intl Arpt Rev Jt Ser A Impt & Rfdg (AMT) (FGIC Insd) (e) 5.500 11/01/31 5,841,220 2,000 Houston, TX Arpt Sys Rev Sub Lien (FSA Insd) 5.500 07/01/20 2,201,340 3,000 Houston, TX Arpt Sys Rev Sub Lien Ser A (AMT) (FSA Insd) 5.625 07/01/30 3,224,760 5,000 Houston, TX Arpt Sys Rev Sub Lien Ser A (AMT) (FSA Insd) 5.125 07/01/32 5,167,100 6,000 Houston, TX Util Sys Rev First Lien Ser A Rfdg (FSA Insd) 5.250 05/15/21 6,511,680 2,185 Lower Colorado Riv Auth TX LCRA Svcs Corp Proj Rfdg (FGIC Insd) 5.000 05/15/24 2,273,951 2,000 Lower Colorado Riv Auth TX LCRA Svcs Corp Proj Rfdg (FGIC Insd) 5.000 05/15/33 2,062,200 1,500 Metropolitan Hlth Fac Dev Corp TX Wilson N Jones Mem Hosp Proj 7.250 01/01/31 1,552,545 1,870 Midlothian, TX Indpt Sch Dist Sch Bldg Rfdg (PSF Gtd) (a) 5.000 02/15/25 1,976,814 5,000 North Cent TX Hlth Fac Dev Hosp Childrens Med Ctr Dallas (AMBAC Insd) 5.250 08/15/32 5,310,950 1,024 Texas Gen Svcs Comm Partn Int Lease Purch Ctfs (Acquired 03/16/95, Cost $1,024,194) (d) 7.250 08/01/11 1,027,164 2,360 University TX Rev Fin Sys Ser B 5.250 08/15/20 2,586,654 -------------- 51,209,206 -------------- VIRGINIA 0.8% 2,000 Tobacco Settlement Fin Corp VA Asset Bkd 5.500 06/01/26 2,111,040 -------------- WASHINGTON 9.0% 9,850 Bellevue, WA Convention Cent Comp Int Rfdg (MBIA Insd) * 02/01/25 3,942,364 3,750 Chelan Cnty, WA Pub Util Dist No. 001 Cons Rev Chelan Hydro Ser A (AMT) (MBIA Insd) 5.600 01/01/36 4,068,975 5,000 Energy Northwest WA Elec Rev Columbia Generating Ser A Rfdg (FSA Insd) 5.500 07/01/16 5,516,200 2,000 Port Seattle, WA Rev Inter Lien Ser A Rfdg (MBIA Insd) 5.000 03/01/28 2,113,020 2,000 Port Seattle, WA Rev Inter Lien Ser A Rfdg (MBIA Insd) 5.000 03/01/30 2,109,800 2,000 Port Seattle, WA Rev Ser B (AMT) (MBIA Insd) 5.625 02/01/24 2,153,160 5,125 Washington St Pub Pwr Supply Sys Nuclear Proj No 3 Rev Ser C Rfdg (MBIA Insd) * 07/01/14 3,530,818 -------------- 23,434,337 -------------- WEST VIRGINIA 3.1% 8,000 Harrison Cnty, WV Cmnty Solid Waste Disp Rev West Penn Pwr Co Proj Ser A (AMT) (MBIA Insd) 6.875 04/15/22 8,026,560 -------------- PAR AMOUNT (000) DESCRIPTION COUPON MATURITY VALUE WISCONSIN 0.7% 1,500 Southeast WI Professional Baseball Pk Dist Sales Tax Rev Ser A Rfdg (MBIA Insd) 5.500 12/15/20 1,742,385 -------------- TOTAL INVESTMENTS 159.1% (Cost $383,762,832) 412,154,649 LIABILITIES IN EXCESS OF OTHER ASSETS (1.2%) (2,961,301) PREFERRED SHARES (INCLUDING ACCRUED DISTRIBUTIONS) (57.9%) (150,074,801) -------------- NET ASSETS APPLICABLE TO COMMON SHARES 100.0% $259,118,547 -------------- Percentages are calculated as a percentage of net assets applicable to common shares. * Zero coupon bond (a) Securities purchased on a when-issued or delayed delivery basis. (b) The Trust owns 100% of the bond issuance. (c) 144A securities are those which are exempt from registration under Rule 144A of the Securities Act of 1933, as amended. These securities may only be resold in transactions exempt from registration which are normally those transactions with qualified institutional buyers. (d) These securities are restricted and may be resold only in transactions exempt from registration which are normally those transactions with qualified institutional buyers. Restricted securities comprise 1.1% of net assets applicable to common shares. (e) All or a portion of these securities have been physically segregated in connection with open futures contracts. ACA - American Capital Access AMBAC - AMBAC Indemnity Corp. AMT - Alternative Minimum Tax Connie Lee - Connie Lee Insurance Co. FGIC - Financial Guaranty Insurance Co. FHA - Federal Housing Administration FNMA - Federal National Mortgage Association FSA - Financial Security Assurance Inc. GNMA - Government National Mortgage Association MBIA - Municipal Bond Investors Assurance Corp. PSF Gtd - Permanent School Fund Guaranteed FUTURES CONTRACTS OUTSTANDING AS OF JULY 31, 2005. UNREALIZED APPRECIATION/ CONTRACTS DEPRECIATION SHORT CONTRACTS: U.S. Treasury Notes 5-Year Futures September 2005 (Current Notional Value of $107,203 per contract) 837 $ 1,324,082 ========= ============ Item 2. Controls and Procedures. (a) The Trust's principal executive officer and principal financial officer have concluded that the Trust's disclosure controls and procedures are sufficient to ensure that information required to be disclosed by the Trust in this Form N-Q was recorded, processed, summarized and reported within the time periods specified in the Securities and Exchange Commission's rules and forms, based upon such officers' evaluation of these controls and procedures as of a date within 90 days of the filing date of the report. (b) There were no changes in the Trust's internal control over financial reporting that occurred during the registrant's fiscal quarter that has materially affected, or is reasonably likely to materially affect, the Trust's internal control over financial reporting. Item 3. Exhibits. (a) A certification for the Principal Executive Officer of the registrant is attached hereto as part of EX-99.cert. (b) A certification for the Principal Financial Officer of the registrant is attached hereto as part of EX-99.cert. SIGNATURES Pursuant to the requirements of the Securities Exchange Act of 1934 and the Investment Company Act of 1940, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized. (Registrant) Van Kampen Municipal Opportunity Trust By: /s/ Ronald E. Robison --------------------- Name: Ronald E. Robison Title: Principal Executive Officer Date: September 19, 2005 Pursuant to the requirements of the Securities Exchange Act of 1934 and the Investment Company Act of 1940, this report has been signed by the following persons on behalf of the registrant and in the capacities and on the dates indicated. By: /s/ Ronald E. Robison --------------------- Name: Ronald E. Robison Title: Principal Executive Officer Date: September 19, 2005 By: /s/ Phillip G. Goff ------------------- Name: Phillip G. Goff Title: Principal Financial Officer Date: September 19, 2005