Unassociated Document



 
UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, DC 20549

FORM N-Q

QUARTERLY SCHEDULE OF PORTFOLIO HOLDINGS OF REGISTERED MANAGEMENT INVESTMENT COMPANY
 
Investment Company Act file number 811-06379
 
Nuveen Insured Municipal Opportunity Fund, Inc.
(Exact name of registrant as specified in charter)
 
Nuveen Investments
        333 West Wacker Drive, Chicago, Illinois 60606         
(Address of principal executive offices) (Zip code)
 

Kevin J. McCarthy
Vice President and Secretary
        333 West Wacker Drive, Chicago, Illinois 60606         
(Name and address of agent for service)
 
Registrant's telephone number, including area code:         312-917-7700        
 
Date of fiscal year end:            10/31          
 
Date of reporting period:         7/31/11         
 
Form N-Q is to be used by management investment companies, other than small business investment companies registered on Form N-5 (§§ 239.24 and 274.5 of this chapter), to file reports with the Commission, not later than 60 days after the close of the first and third fiscal quarters, pursuant to rule 30b1-5 under the Investment Company Act of 1940 (17 CFR 270.30b1-5). The Commission may use the information provided on Form N-Q in its regulatory, disclosure review, inspection, and policymaking roles.
 
A registrant is required to disclose the information specified by Form N-Q, and the Commission will make this information public. A registrant is not required to respond to the collection of information contained in Form N-Q unless the Form displays a currently valid Office of Management and Budget ("OMB") control number. Please direct comments concerning the accuracy of the information collection burden estimate and any suggestions for reducing the burden to the Secretary, Securities and Exchange Commission, 450 Fifth Street, NW, Washington, DC 20549-0609. The OMB has reviewed this collection of information under the clearance requirements of 44 U.S.C. § 3507.

 
 
 

 
Item 1. Schedule of Investments
 
 

 
           
   
Portfolio of Investments (Unaudited) 
     
   
      Nuveen Insured Municipal Opportunity Fund, Inc. (NIO) 
     
   
      July 31, 2011 
     
Principal 
   
Optional Call 
   
Amount (000) 
 
Description (1) 
Provisions (2) 
Ratings (3) 
Value 
   
Alabama – 2.6% (1.7% of Total Investments) 
     
$ 10,500 
 
Birmingham Waterworks and Sewerage Board, Alabama, Water and Sewerage Revenue Bonds, Series 
1/17 at 100.00 
AA+ 
$ 9,726,780 
   
2007A, 4.500%, 1/01/43 – BHAC Insured 
     
2,500 
 
Jefferson County, Alabama, Sewer Revenue Capital Improvement Warrants, Series 2002B, 5.125%, 
8/12 at 100.00 
AAA 
2,620,300 
   
2/01/42 (Pre-refunded 8/01/12) – FGIC Insured 
     
   
Jefferson County, Alabama, Sewer Revenue Capital Improvement Warrants, Series 2002D: 
     
425 
 
5.000%, 2/01/38 (Pre-refunded 8/01/12) – FGIC Insured 
8/12 at 100.00 
AAA 
444,168 
14,800 
 
5.000%, 2/01/42 (Pre-refunded 8/01/12) – FGIC Insured 
8/12 at 100.00 
AAA 
15,493,528 
10,195 
 
Jefferson County, Alabama, Sewer Revenue Refunding Warrants, Series 1997A, 5.375%, 2/01/27 – 
10/11 at 100.00 
Caa3 
7,074,412 
   
FGIC Insured 
     
38,420 
 
Total Alabama 
   
35,359,188 
   
Arizona – 2.1% (1.4% of Total Investments) 
     
   
Arizona State University, Certificates of Participation, Resh Infrastructure Projects, 
     
   
Series 2005A: 
     
2,000 
 
5.000%, 9/01/25 – AMBAC Insured 
3/15 at 100.00 
AA– 
2,051,040 
2,000 
 
5.000%, 9/01/27 – AMBAC Insured 
3/15 at 100.00 
AA– 
2,041,680 
1,000 
 
Arizona State University, System Revenue Bonds, Series 2005, 5.000%, 7/01/27 – AMBAC Insured 
7/15 at 100.00 
Aa3 
1,020,460 
3,000 
 
Arizona State, Certificates of Participation, Department of Administration Series 2010B, 
4/20 at 100.00 
AA+ 
3,083,760 
   
5.000%, 10/01/29 – AGC Insured 
     
1,000 
 
Maricopa County Union High School District 210, Phoenix, Arizona, General Obligation Bonds, 
7/14 at 100.00 
AA+ (4) 
1,125,860 
   
Series 2004A, 5.000%, 7/01/22 (Pre-refunded 7/01/14) – AGM Insured 
     
5,200 
 
Mesa, Arizona, Utility System Revenue Bonds, Reset Option Longs, Series 11032, 15.030%, 
7/17 at 100.00 
AA+ 
4,196,192 
   
7/01/26 – AGM Insured (IF) 
     
1,150 
 
Phoenix Civic Improvement Corporation, Arizona, Junior Lien Wastewater System Revenue Bonds, 
7/14 at 100.00 
AA+ 
1,194,540 
   
Series 2004, 5.000%, 7/01/27 – NPFG Insured 
     
13,490 
 
Phoenix Civic Improvement Corporation, Arizona, Junior Lien Water System Revenue Bonds, Series 
7/15 at 100.00 
AAA 
14,029,870 
   
2005, 4.750%, 7/01/25 – NPFG Insured 
     
28,840 
 
Total Arizona 
   
28,743,402 
   
Arkansas – 0.2% (0.1% of Total Investments) 
     
2,660 
 
Arkansas State University, Student Fee Revenue Bonds, Beebe Campus, Series 2006, 5.000%, 
9/15 at 100.00 
A1 
2,689,765 
   
9/01/35 – AMBAC Insured 
     
   
California – 23.1% (15.4% of Total Investments) 
     
5,600 
 
Alameda Corridor Transportation Authority, California, Subordinate Lien Revenue Bonds, Series 
No Opt. Call 
A– 
3,374,896 
   
2004A, 0.000%, 10/01/20 – AMBAC Insured 
     
   
California Department of Water Resources, Power Supply Revenue Bonds, Series 2002A: 
     
30,000 
 
5.375%, 5/01/17 (Pre-refunded 5/01/12) – SYNCORA GTY Insured 
5/12 at 101.00 
Aaa 
31,458,900 
20,000 
 
5.375%, 5/01/18 (Pre-refunded 5/01/12) – AMBAC Insured 
5/12 at 101.00 
Aaa 
20,972,600 
   
California Department of Water Resources, Water System Revenue Bonds, Central Valley Project, 
     
   
Series 2005AC: 
     
30 
 
5.000%, 12/01/24 (Pre-refunded 12/01/14) – NPFG Insured 
12/14 at 100.00 
AAA 
34,437 
25 
 
5.000%, 12/01/27 (Pre-refunded 12/01/14) – NPFG Insured 
12/14 at 100.00 
AAA 
28,698 
   
California Department of Water Resources, Water System Revenue Bonds, Central Valley Project, 
     
   
Series 2005AC: 
     
3,670 
 
5.000%, 12/01/24 – NPFG Insured (UB) 
12/14 at 100.00 
AAA 
4,006,392 
2,795 
 
5.000%, 12/01/27 – NPFG Insured (UB) 
12/14 at 100.00 
AAA 
2,995,877 
10,150 
 
California State, General Obligation Bonds, Series 2004, 5.000%, 6/01/31 – AMBAC Insured 
12/14 at 100.00 
A1 
10,169,387 
3,500 
 
Coachella Valley Unified School District, Riverside County, California, General Obligation 
8/15 at 100.00 
A1 
3,588,620 
   
Bonds, Series 2005A, 5.000%, 8/01/26 – FGIC Insured 
     
20,000 
 
Cucamonga County Water District, San Bernardino County, California, Certificates of 
9/11 at 101.00 
AA– 
19,889,400 
   
Participation, Water Shares Purchase, Series 2001, 5.125%, 9/01/35 – FGIC Insured 
     
5,750 
 
East Bay Municipal Utility District, Alameda and Contra Costa Counties, California, Water 
6/15 at 100.00 
AAA 
6,019,158 
   
System Subordinated Revenue Bonds, Series 2005A, 5.000%, 6/01/27 – NPFG Insured 
     
10,000 
 
Golden State Tobacco Securitization Corporation, California, Enhanced Tobacco Settlement 
6/15 at 100.00 
A2 
9,145,300 
   
Asset-Backed Revenue Bonds, Series 2005A, 5.000%, 6/01/38 – FGIC Insured 
     
1,520 
 
Hayward Redevelopment Agency, California, Downtown Redevelopment Project Tax Allocation Bonds, 
3/16 at 100.00 
A– 
1,278,670 
   
Series 2006, 5.000%, 3/01/36 – SYNCORA GTY Insured 
     
5,600 
 
Kern Community College District, California, General Obligation Bonds, Series 2006, 0.000%, 
No Opt. Call 
AA+ 
2,714,264 
   
11/01/24 – AGM Insured 
     
5,000 
 
Long Beach Bond Financing Authority, California, Lease Revenue Refunding Bonds, Long Beach 
11/11 at 101.00 
BBB 
4,730,200 
   
Aquarium of the South Pacific, Series 2001, 5.250%, 11/01/30 – AMBAC Insured 
     
2,740 
 
Los Angeles Harbors Department, California, Revenue Bonds, Series 2006A, 5.000%, 8/01/22 – 
8/16 at 102.00 
AA 
2,919,470 
   
FGIC Insured (Alternative Minimum Tax) 
     
20,000 
 
Los Angeles Unified School District, California, General Obligation Bonds, Series 2003A, 
7/13 at 100.00 
AA+ 
21,219,200 
   
5.000%, 7/01/21 – AGM Insured 
     
3,000 
 
Los Angeles Unified School District, California, General Obligation Bonds, Series 2006F, 
7/16 at 100.00 
Aa2 
3,158,760 
   
5.000%, 7/01/24 – FGIC Insured 
     
5,200 
 
Palomar Pomerado Health, California, General Obligation Bonds, Series 2009A, 0.000%, 8/01/38 – 
8/29 at 100.00 
AA+ 
3,377,660 
   
AGC Insured 
     
5,515 
 
Port of Oakland, California, Revenue Bonds, Series 2002L, 5.000%, 11/01/22 – FGIC Insured 
11/12 at 100.00 
A 
5,547,097 
   
(Alternative Minimum Tax) 
     
690 
 
Port of Oakland, California, Revenue Bonds, Series 2002L, 5.000%, 11/01/22 (Pre-refunded 
11/12 at 100.00 
A (4) 
730,979 
   
11/01/12) – FGIC Insured 
     
   
Poway Redevelopment Agency, California, Tax Allocation Bonds, Paguay Redevelopment Project, 
     
   
Series 2001: 
     
15,000 
 
5.200%, 6/15/30 – AMBAC Insured 
12/11 at 101.00 
N/R 
13,328,250 
5,000 
 
5.125%, 6/15/33 – AMBAC Insured 
12/11 at 101.00 
N/R 
4,270,250 
2,035 
 
Redding, California, Electric System Revenue Certificates of Participation, Series 2005, 
6/15 at 100.00 
BBB 
1,763,612 
   
5.000%, 6/01/30 – FGIC Insured 
     
6,000 
 
Redlands Unified School District, San Bernardino County, California, General Obligation Bonds, 
7/13 at 100.00 
AA+ 
6,078,120 
   
Series 2003, 5.000%, 7/01/26 – AGM Insured 
     
2,970 
 
Riverside Community College District, California, General Obligation Bonds, Series 2005, 
8/15 at 100.00 
AA+ 
3,211,164 
   
5.000%, 8/01/22 – AGM Insured 
     
2,500 
 
Sacramento County Sanitation District Financing Authority, California, Revenue Bonds, Series 
12/15 at 100.00 
AA 
2,668,575 
   
2005B, 4.750%, 12/01/21 – FGIC Insured 
     
3,025 
 
San Francisco Airports Commission, California, Revenue Refunding Bonds, San Francisco 
11/11 at 100.00 
A+ 
3,025,605 
   
International Airport, Second Series 2001, Issue 27A, 5.250%, 5/01/26 – NPFG Insured 
     
   
(Alternative Minimum Tax) 
     
1,220 
 
San Francisco Bay Area Rapid Transit District, California, Sales Tax Revenue Bonds, Refunding 
7/15 at 100.00 
AA+ 
1,331,874 
   
Series 2005A, 5.000%, 7/01/22 – NPFG Insured 
     
3,030 
 
San Francisco Bay Area Rapid Transit District, California, Sales Tax Revenue Bonds, Series 
10/11 at 100.00 
AA+ 
3,030,364 
   
2001, 5.125%, 7/01/36 – AMBAC Insured 
     
2,105 
 
San Francisco Unified School District, California, General Obligation Bonds, Series 2007A, 
6/17 at 100.00 
AA+ 
1,849,074 
   
3.000%, 6/15/27 – AGM Insured 
     
66,685 
 
San Joaquin Hills Transportation Corridor Agency, Orange County, California, Senior Lien Toll 
No Opt. Call 
AAA 
50,277,156 
   
Road Revenue Bonds, Series 1993, 0.000%, 1/01/21 (ETM) 
     
   
San Joaquin Hills Transportation Corridor Agency, Orange County, California, Toll Road Revenue 
     
   
Refunding Bonds, Series 1997A: 
     
31,615 
 
5.250%, 1/15/30 – NPFG Insured 
1/12 at 100.00 
Baa1 
24,697,322 
21,500 
 
0.000%, 1/15/32 – NPFG Insured 
No Opt. Call 
Baa1 
3,584,265 
21,255 
 
San Jose Redevelopment Agency, California, Tax Allocation Bonds, Merged Area Redevelopment 
8/17 at 100.00 
BBB+ 
15,430,280 
   
Project, Series 2006C, 4.250%, 8/01/30 – NPFG Insured 
     
11,250 
 
Santa Ana Financing Authority, California, Lease Revenue Bonds, Police Administration and 
No Opt. Call 
Baa1 
12,285,450 
   
Housing Facility, Series 1994A, 6.250%, 7/01/24 – NPFG Insured 
     
6,785 
 
Santa Clara Valley Water District, California, Water Revenue Bonds, Series 2006A, 3.750%, 
6/16 at 100.00 
AA+ 
6,663,141 
   
6/01/25 – AGM Insured 
     
5,000 
 
Walnut Energy Center Authority, California, Electric Revenue Bonds, Turlock Irrigation 
1/14 at 100.00 
A+ 
4,910,500 
   
District, Series 2004A, 5.000%, 1/01/34 – AMBAC Insured 
     
367,760 
 
Total California 
   
315,764,967 
   
Colorado – 3.3% (2.2% of Total Investments) 
     
1,080 
 
Arkansas River Power Authority, Colorado, Power Revenue Bonds, Series 2006, 5.250%, 10/01/40 – 
10/16 at 100.00 
BBB 
936,446 
   
SYNCORA GTY Insured 
     
1,900 
 
Aspen, Colorado, Sales Tax Revenue Bonds, Parks and Open Space, Series 2005B, 5.250%, 
11/15 at 100.00 
AA+ 
2,039,783 
   
11/01/24 – AGM Insured 
     
1,000 
 
Colorado Department of Transportation, Certificates of Participation, Series 2004, 5.000%, 
6/14 at 100.00 
AA– 
1,032,380 
   
6/15/25 – NPFG Insured 
     
4,950 
 
Denver Convention Center Hotel Authority, Colorado, Revenue Bonds, Convention Center Hotel, 
12/13 at 100.00 
N/R (4) 
5,430,497 
   
Senior Lien Series 2003A, 5.000%, 12/01/33 (Pre-refunded 12/01/13) – SYNCORA GTY Insured 
     
1,740 
 
Douglas County School District RE1, Douglas and Elbert Counties, Colorado, General Obligation 
12/14 at 100.00 
Aa1 
1,805,807 
   
Bonds, Series 2005B, 5.000%, 12/15/28 – AGM Insured 
     
35,995 
 
E-470 Public Highway Authority, Colorado, Senior Revenue Bonds, Series 1997B, 0.000%, 
No Opt. Call 
Baa1 
16,728,676 
   
9/01/23 – NPFG Insured 
     
10,000 
 
E-470 Public Highway Authority, Colorado, Toll Revenue Bonds, Series 2004A, 0.000%, 9/01/27 – 
No Opt. Call 
Baa1 
3,357,400 
   
NPFG Insured 
     
4,520 
 
Jefferson County School District R1, Colorado, General Obligation Bonds, Series 2004, 5.000%, 
12/14 at 100.00 
AA+ (4) 
5,177,434 
   
12/15/24 (Pre-refunded 12/15/14) – AGM Insured (UB) 
     
4,335 
 
Poudre Tech Metro District, Colorado, Unlimited Property Tax Supported Revenue Bonds, 
12/20 at 100.00 
AA+ 
4,432,104 
   
Refunding & Improvement Series 2010A, 5.000%, 12/01/39 – AGM Insured 
     
2,500 
 
Summit County School District RE-1, Summit, Colorado, General Obligation Bonds, Series 2004B, 
12/14 at 100.00 
Aa2 
2,647,275 
   
5.000%, 12/01/24 – FGIC Insured 
     
1,000 
 
University of Colorado, Enterprise System Revenue Bonds, Series 2005, 5.000%, 6/01/30 – 
6/15 at 100.00 
Aa2 
1,038,240 
   
FGIC Insured 
     
69,020 
 
Total Colorado 
   
44,626,042 
   
Connecticut – 0.2% (0.2% of Total Investments) 
     
3,250 
 
Connecticut Health and Educational Facilities Authority, Revenue Bonds, Wesleyan University, 
7/20 at 100.00 
AA 
3,354,943 
   
Series 2010G, 5.000%, 7/01/39 
     
   
District of Columbia – 1.0% (0.6% of Total Investments) 
     
   
District of Columbia Water and Sewerage Authority, Subordinate Lien Public Utility Revenue 
     
   
Bonds, Series 2003: 
     
5,000 
 
5.125%, 10/01/24 – FGIC Insured 
10/13 at 100.00 
AA– 
5,270,200 
5,000 
 
5.125%, 10/01/25 – FGIC Insured 
10/13 at 100.00 
AA– 
5,236,800 
2,670 
 
Washington Convention Center Authority, District of Columbia, Senior Lien Dedicated Tax Revenue 
10/16 at 100.00 
AA+ 
2,675,046 
   
Bonds, Series 2007, Residual 1606, 11.736%, 10/01/30 – AMBAC Insured (IF) 
     
12,670 
 
Total District of Columbia 
   
13,182,046 
   
Florida – 25.0% (16.6% of Total Investments) 
     
1,250 
 
Bay County, Florida, Water System Revenue Bonds, Series 2005, 5.000%, 9/01/24 – AMBAC Insured 
9/15 at 100.00 
A1 
1,294,525 
975 
 
Broward County Housing Finance Authority, Florida, GNMA Collateralized Multifamily Housing 
12/11 at 100.00 
Aaa 
975,761 
   
Revenue Refunding Bonds, Pompano Oaks Apartments, Series 1997, 6.000%, 12/01/27 (Alternative 
     
   
Minimum Tax) 
     
3,820 
 
Broward County School Board, Florida, Certificates of Participation, Series 2003, 5.250%, 
7/13 at 100.00 
Aa3 
4,053,287 
   
7/01/19 – NPFG Insured 
     
2,150 
 
Broward County, Florida, Airport System Revenue Bonds, Series 2004L, 5.000%, 10/01/23 – 
10/14 at 100.00 
A+ 
2,229,894 
   
AMBAC Insured 
     
4,500 
 
Broward County, Florida, Water and Sewer Utility Revenue Bonds, Series 2003, 5.000%, 10/01/24 – 
10/13 at 100.00 
AA 
4,706,190 
   
NPFG Insured 
     
   
Clay County, Florida, Uiltity System Revenue Bonds, Series 2007: 
     
5,110 
 
5.000%, 11/01/27 – SYNCORA GTY Insured (UB) 
11/17 at 100.00 
AAA 
5,294,113 
12,585 
 
5.000%, 11/01/32 – SYNCORA GTY Insured (UB) 
11/17 at 100.00 
AAA 
12,803,727 
   
Collier County Housing Finance Authority, Florida, Multifamily Housing Revenue Bonds, Saxon 
     
   
Manor Isles Project, Series 1998B: 
     
1,260 
 
5.350%, 9/01/18 – AGM Insured (Alternative Minimum Tax) 
9/11 at 100.00 
AAA 
1,261,247 
1,000 
 
5.400%, 9/01/23 – AGM Insured (Alternative Minimum Tax) 
9/11 at 100.00 
AAA 
1,000,660 
   
Collier County Housing Finance Authority, Florida, Multifamily Housing Revenue Refunding 
     
   
Bonds, Saxon Manor Isles Project, Series 1998A, Subseries 1: 
     
1,040 
 
5.350%, 9/01/18 – AGM Insured (Alternative Minimum Tax) 
9/11 at 100.00 
AAA 
1,041,030 
1,400 
 
5.400%, 9/01/23 – AGM Insured (Alternative Minimum Tax) 
9/11 at 100.00 
AAA 
1,400,924 
1,500 
 
Collier County, Florida, Capital Improvement Revenue Bonds, Series 2005, 5.000%, 10/01/23 – 
10/14 at 100.00 
AA– 
1,559,835 
   
NPFG Insured 
     
3,000 
 
Collier County, Florida, Gas Tax Revenue Bonds, Series 2005, 5.000%, 6/01/22 – AMBAC Insured 
6/15 at 100.00 
A1 
3,125,370 
   
Dade County Housing Finance Authority, Florida, Multifamily Mortgage Revenue Bonds, Siesta 
     
   
Pointe Apartments Project, Series 1997A: 
     
1,230 
 
5.650%, 9/01/17 – AGM Insured (Alternative Minimum Tax) 
9/11 at 100.00 
AAA 
1,231,673 
1,890 
 
5.750%, 9/01/29 – AGM Insured (Alternative Minimum Tax) 
9/11 at 100.00 
AAA 
1,890,794 
1,100 
 
Dade County, Florida, Seaport Revenue Refunding Bonds, Series 1995, 5.750%, 10/01/15 – 
10/11 at 100.00 
A2 
1,104,741 
   
NPFG Insured 
     
   
Davie, Florida, Water and Sewerage Revenue Refunding and Improvement Bonds, Series 2003: 
     
910 
 
5.250%, 10/01/17 – AMBAC Insured 
10/13 at 100.00 
N/R 
981,626 
475 
 
5.250%, 10/01/18 – AMBAC Insured 
10/13 at 100.00 
N/R 
502,693 
   
Deltona, Florida, Utility Systems Water and Sewer Revenue Bonds, Series 2003: 
     
1,250 
 
5.250%, 10/01/22 – NPFG Insured 
10/13 at 100.00 
A1 
1,286,200 
1,095 
 
5.000%, 10/01/23 – NPFG Insured 
10/13 at 100.00 
A1 
1,124,050 
1,225 
 
5.000%, 10/01/24 – NPFG Insured 
10/13 at 100.00 
A1 
1,253,506 
1,555 
 
DeSoto County, Florida, Capital Improvement Revenue Bonds, Series 2002, 5.250%, 10/01/20 
4/12 at 101.00 
A1 (4) 
1,623,420 
   
(Pre-refunded 4/01/12) – NPFG Insured 
     
2,500 
 
Escambia County School Board, Florida, Certificates of Participation, Series 2004, 5.000%, 
2/15 at 100.00 
Baa1 
2,571,775 
   
2/01/22 – NPFG Insured 
     
2,500 
 
Flagler County School Board, Florida, Certificates of Participation, Master Lease Revenue 
8/15 at 100.00 
AA+ 
2,532,100 
   
Program, Series 2005A, 5.000%, 8/01/30 – AGM Insured 
     
1,200 
 
Flagler County, Florida, Capital Improvement Revenue Bonds, Series 2005, 5.000%, 10/01/30 – 
10/15 at 100.00 
A 
1,215,912 
   
NPFG Insured 
     
3,945 
 
Florida Governmental Utility Authority, Utility System Revenue Bonds, Citrus Project, Series 
10/13 at 100.00 
N/R (4) 
4,339,342 
   
2003, 5.000%, 10/01/23 (Pre-refunded 10/01/13) – AMBAC Insured 
     
1,000 
 
Florida Governmental Utility Authority, Utility System Revenue Bonds, Golden Gate Project, 
1/12 at 100.00 
N/R 
907,900 
   
Series 1999, 5.000%, 7/01/29 – AMBAC Insured 
     
   
Florida Municipal Loan Council, Revenue Bonds, Series 2000B: 
     
1,825 
 
5.375%, 11/01/25 – NPFG Insured 
11/11 at 100.00 
A– 
1,829,015 
1,840 
 
5.375%, 11/01/30 – NPFG Insured 
11/11 at 100.00 
A– 
1,842,447 
1,000 
 
Florida Municipal Loan Council, Revenue Bonds, Series 2001A, 5.250%, 11/01/18 – NPFG Insured 
11/11 at 101.00 
A– 
1,015,080 
2,000 
 
Greater Orlando Aviation Authority, Florida, Airport Facilities Revenue Refunding Bonds, 
10/13 at 100.00 
AA+ 
2,143,680 
   
Series 2003A, 5.000%, 10/01/17 – AGM Insured 
     
5,200 
 
Gulf Breeze, Florida, Local Government Loan Program, Remarketed 6-1-2001, Series 1985E, 
12/11 at 101.00 
BBB 
5,246,800 
   
4.750%, 12/01/20 (Mandatory put 12/01/11) – FGIC Insured 
     
1,500 
 
Gulf Breeze, Florida, Local Government Loan Program, Remarketed 7-3-2000, Series 1985E, 
12/11 at 100.00 
N/R 
1,508,175 
   
5.750%, 12/01/20 (Mandatory put 12/01/19) – FGIC Insured 
     
1,915 
 
Halifax Hospital Medical Center, Florida, Revenue Bonds, Series 2006, 5.500%, 6/01/38 – 
6/18 at 100.00 
AA+ 
1,937,137 
   
AGM Insured 
     
2,500 
 
Hillsborough County Industrial Development Authority, Florida, Industrial Development Revenue 
No Opt. Call 
Aaa 
3,104,875 
   
Bonds, University Community Hospital, Series 1994, 6.500%, 8/15/19 – NPFG Insured 
     
1,000 
 
Hillsborough County School Board, Florida, Certificates of Participation, Master Lease 
7/15 at 100.00 
Aa2 
1,028,440 
   
Program, Series 2005A, 5.000%, 7/01/26 – NPFG Insured 
     
6,000 
 
Hillsborough County School Board, Florida, Certificates of Participation, Series 2003, 5.000%, 
7/13 at 100.00 
Aa2 
6,057,180 
   
7/01/29 – NPFG Insured 
     
2,000 
 
Hillsborough County, Florida, Community Investment Tax Revenue Bonds, Series 2004, 5.000%, 
11/13 at 101.00 
AA 
2,114,220 
   
5/01/23 – AMBAC Insured 
     
1,000 
 
Hillsborough County, Florida, Revenue Refunding Bonds, Tampa Bay Arena, Series 2005, 5.000%, 
10/15 at 100.00 
AA+ 
1,039,500 
   
10/01/25 – FGIC Insured 
     
2,595 
 
Indian River County School Board, Florida, Certificates of Participation, Series 2005, 5.000%, 
7/15 at 100.00 
A+ 
2,685,877 
   
7/01/22 – NPFG Insured 
     
   
Indian Trace Development District, Florida, Water Management Special Benefit Assessment Bonds, 
     
   
Series 2005: 
     
1,645 
 
5.000%, 5/01/25 – NPFG Insured 
5/15 at 102.00 
Baa1 
1,568,508 
1,830 
 
5.000%, 5/01/27 – NPFG Insured 
5/15 at 102.00 
Baa1 
1,705,926 
4,425 
 
Jacksonville Economic Development Commission, Florida, Healthcare Facilities Revenue Bonds, 
11/12 at 100.00 
Aa2 
4,459,205 
   
Mayo Clinic, Series 2001C, 5.500%, 11/15/36 – NPFG Insured 
     
1,480 
 
Jacksonville, Florida, Better Jacksonville Sales Tax Revenue Bonds, Series 2003, 5.250%, 
10/13 at 100.00 
A1 
1,581,114 
   
10/01/20 – NPFG Insured 
     
1,500 
 
JEA, Florida, Water and Sewerage System Revenue Bonds, Crossover Refunding Series 2007B, 
10/14 at 100.00 
Aa2 
1,553,235 
   
5.000%, 10/01/24 – NPFG Insured 
     
1,000 
 
JEA, Florida, Water and Sewerage System Revenue Bonds, Series 2004A, 5.000%, 10/01/14 – 
10/13 at 100.00 
Aa2 
1,081,450 
   
FGIC Insured 
     
1,450 
 
Jupiter, Florida, Water Revenue Bonds, Series 2003, 5.000%, 10/01/22 – AMBAC Insured 
10/13 at 100.00 
AA+ 
1,539,117 
   
Lakeland, Florida, Utility Tax Revenue Bonds, Series 2003B: 
     
1,730 
 
5.000%, 10/01/18 – AMBAC Insured 
10/12 at 100.00 
N/R 
1,759,912 
2,000 
 
5.000%, 10/01/19 – AMBAC Insured 
10/12 at 100.00 
N/R 
2,027,800 
1,230 
 
Lee County, Florida, Local Option Gas Tax Revenue Bonds, Series 2004, 5.000%, 10/01/20 – 
10/14 at 100.00 
A2 
1,274,219 
   
FGIC Insured 
     
1,505 
 
Lee County, Florida, Transportation Facilities Revenue Bonds, Series 2004B, 5.000%, 10/01/21 – 
10/14 at 100.00 
A– 
1,556,275 
   
AMBAC Insured 
     
1,000 
 
Lee Memorial Health System, Florida, Hospital Revenue Bonds, Series 2007A, 5.000%, 4/01/32 – 
4/17 at 100.00 
A 
921,240 
   
NPFG Insured 
     
3,000 
 
Leesburg, Florida, Utility Revenue Bonds, Series 2007, 5.000%, 10/01/37 – NPFG Insured 
10/17 at 100.00 
Aa3 
2,975,970 
2,000 
 
Manatee County, Florida, Public Utilities Revenue Bonds, Series 2003, 5.125%, 10/01/20 – 
10/13 at 100.00 
Aa2 
2,146,540 
   
NPFG Insured 
     
   
Marco Island, Florida, Water Utility System Revenue Bonds, Series 2003: 
     
1,350 
 
5.250%, 10/01/17 – NPFG Insured 
10/13 at 100.00 
Aa3 
1,471,433 
1,000 
 
5.250%, 10/01/18 – NPFG Insured 
10/13 at 100.00 
Aa3 
1,075,920 
2,000 
 
5.000%, 10/01/27 – NPFG Insured 
10/13 at 100.00 
Aa3 
2,027,160 
2,200 
 
Miami-Dade County, Florida, Aviation Revenue Bonds, Miami International Airport, Series 2002A, 
10/12 at 100.00 
AA+ 
2,063,710 
   
5.125%, 10/01/35 – AGM Insured (Alternative Minimum Tax) 
     
   
Miami-Dade County, Florida, Aviation Revenue Bonds, Miami International Airport, Series 2002: 
     
5,615 
 
5.750%, 10/01/19 – FGIC Insured (Alternative Minimum Tax) 
10/12 at 100.00 
A2 
5,781,878 
35,920 
 
5.375%, 10/01/32 – FGIC Insured (Alternative Minimum Tax) 
10/12 at 100.00 
A2 
34,995,778 
12,930 
 
Miami-Dade County, Florida, Public Facilities Revenue Bonds, Jackson Health System, Series 
12/15 at 100.00 
Aa3 
12,411,766 
   
2005A, 5.000%, 6/01/32 – NPFG Insured 
     
5,320 
 
Miami-Dade County, Florida, Public Facilities Revenue Bonds, Jackson Health System, Series 
6/15 at 100.00 
Aa3 
5,319,096 
   
2005B, 5.000%, 6/01/25 – NPFG Insured 
     
18,000 
 
Miami-Dade County, Florida, Subordinate Special Obligation Bonds, Series 1997A, 0.000%, 
10/11 at 59.36 
A2 
10,096,920 
   
10/01/21 – NPFG Insured 
     
3,000 
 
Miami-Dade County, Florida, Transit System Sales Surtax Revenue Bonds, Series 2008, 5.000%, 
7/18 at 100.00 
AA+ 
3,014,700 
   
7/01/35 – AGM Insured 
     
2,000 
 
Miami-Dade County, Florida, Water and Sewer System Revenue Bonds, Refunding Series 2008B, 
No Opt. Call 
AA+ 
2,324,260 
   
5.250%, 10/01/22 – AGM Insured 
     
   
Northern Palm Beach County Improvement District, Florida, Revenue Bonds, Water Control and 
     
   
Improvement Development Unit 9B, Series 2005: 
     
1,290 
 
5.000%, 8/01/23 – NPFG Insured 
8/15 at 102.00 
Baa1 
1,313,955 
2,145 
 
5.000%, 8/01/29 – NPFG Insured 
8/15 at 102.00 
Baa1 
2,136,163 
2,000 
 
Okaloosa County, Florida, Water and Sewer Revenue Bonds, Series 2006, 5.000%, 7/01/36 – 
7/16 at 100.00 
AA+ 
2,019,460 
   
AGM Insured 
     
1,000 
 
Orange County School Board, Florida, Certificates of Participation, Series 2007A, 5.000%, 
8/17 at 100.00 
AA– 
1,028,440 
   
8/01/27 – FGIC Insured 
     
3,180 
 
Orange County, Florida, Sales Tax Revenue Bonds, Series 2002B, 5.125%, 1/01/19 – FGIC Insured 
1/13 at 100.00 
AA 
3,337,887 
2,500 
 
Orange County, Florida, Tourist Development Tax Revenue Bonds, Series 2006, 5.000%, 10/01/31 – 
10/16 at 100.00 
A+ 
2,506,025 
   
SYNCORA GTY Insured 
     
   
Osceola County, Florida, Transportation Revenue Bonds, Osceola Parkway, Series 2004: 
     
2,500 
 
5.000%, 4/01/21 – NPFG Insured 
4/14 at 100.00 
Aa3 
2,596,250 
7,820 
 
5.000%, 4/01/23 – NPFG Insured 
4/14 at 100.00 
Aa3 
8,044,512 
1,750 
 
Palm Bay, Florida, Utility System Revenue Bonds, Palm Bay Utility Corporation, Series 2003, 
10/13 at 100.00 
Aa3 
1,797,898 
   
5.000%, 10/01/20 – NPFG Insured 
     
1,065 
 
Palm Beach County Housing Finance Authority, Florida, Multifamily Housing Revenue Bonds, 
7/12 at 100.00 
AA+ 
1,071,198 
   
Westlake Apartments Phase II, Series 2002, 5.150%, 7/01/22 – AGM Insured (Alternative 
     
   
Minimum Tax) 
     
2,150 
 
Palm Beach County School Board, Florida, Certificates of Participation, Series 2004A, 5.000%, 
8/14 at 100.00 
AA– 
2,201,127 
   
8/01/24 – FGIC Insured 
     
3,000 
 
Palm Beach County School Board, Florida, Certificates of Participation, Series 2007E, 5.000%, 
8/17 at 100.00 
AA– 
3,075,780 
   
8/01/27 – NPFG Insured 
     
8,000 
 
Palm Beach County Solid Waste Authority, Florida, Revenue Bonds, Series 2002B, 0.000%, 
No Opt. Call 
AA 
7,511,760 
   
10/01/14 – AMBAC Insured 
     
   
Palm Coast, Florida, Water Utility System Revenue Bonds, Series 2003: 
     
1,000 
 
5.250%, 10/01/19 – NPFG Insured 
10/13 at 100.00 
Aa3 
1,071,040 
500 
 
5.250%, 10/01/20 – NPFG Insured 
10/13 at 100.00 
Aa3 
535,520 
500 
 
5.250%, 10/01/21 – NPFG Insured 
10/13 at 100.00 
Aa3 
535,275 
3,000 
 
Pasco County, Florida, Water and Sewer Revenue Bonds, Series 2006 Refunding, 5.000%, 
4/16 at 100.00 
AA+ 
3,034,020 
   
10/01/36 – AGM Insured 
     
   
Plantation, Florida, Non-Ad Valorem Revenue Refunding and Improvement Bonds, Series 2003: 
     
2,225 
 
5.000%, 8/15/18 – AGM Insured 
8/13 at 100.00 
Aa3 
2,309,127 
1,300 
 
5.000%, 8/15/21 – AGM Insured 
8/13 at 100.00 
Aa3 
1,329,536 
1,170 
 
Polk County, Florida, Utility System Revenue Bonds, Series 2004A, 5.000%, 10/01/24 – 
10/14 at 100.00 
Aa3 
1,202,713 
   
FGIC Insured 
     
1,000 
 
Port Saint Lucie, Florida, Special Assessment Revenue Bonds, Southwest Annexation District 1B, 
7/17 at 100.00 
Baa1 
859,290 
   
Series 2007, 5.000%, 7/01/33 – NPFG Insured 
     
   
Port St. Lucie, Florida, Stormwater Utility System Revenue Refunding Bonds, Series 2002: 
     
1,190 
 
5.250%, 5/01/15 (Pre-refunded 5/01/12) – NPFG Insured 
5/12 at 100.00 
Aa3 (4) 
1,235,339 
1,980 
 
5.250%, 5/01/17 (Pre-refunded 5/01/12) – NPFG Insured 
5/12 at 100.00 
Aa3 (4) 
2,055,438 
   
Port St. Lucie, Florida, Utility System Revenue Bonds, Refunding Series 2009: 
     
8,500 
 
5.000%, 9/01/35 – AGC Insured 
9/18 at 100.00 
AA+ 
8,608,375 
5,450 
 
5.250%, 9/01/35 – AGC Insured 
9/18 at 100.00 
AA+ 
5,580,855 
10,000 
 
Port St. Lucie, Florida, Utility System Revenue Bonds, Series 2001, 0.000%, 9/01/29 
9/11 at 34.97 
AA– (4) 
3,496,000 
   
(Pre-refunded 9/01/11) – NPFG Insured 
     
1,830 
 
Port St. Lucie, Florida, Utility System Revenue Bonds, Series 2003, 5.000%, 9/01/21 
9/13 at 100.00 
BBB (4) 
2,006,467 
   
(Pre-refunded 9/01/13) – NPFG Insured 
     
1,000 
 
Port St. Lucie, Florida, Utility System Revenue Bonds, Series 2004, 5.000%, 9/01/21 – 
9/14 at 100.00 
Aa3 
1,046,570 
   
NPFG Insured 
     
1,895 
 
Reedy Creek Improvement District, Orange and Osceola Counties, Florida, General Obligation 
6/15 at 100.00 
Aa3 
1,960,017 
   
Bonds, Series 2005B, 5.000%, 6/01/25 – AMBAC Insured 
     
   
Sebring, Florida, Water and Wastewater Revenue Refunding Bonds, Series 2002: 
     
1,360 
 
5.250%, 1/01/17 – FGIC Insured 
1/13 at 100.00 
BBB 
1,432,869 
770 
 
5.250%, 1/01/18 – FGIC Insured 
1/13 at 100.00 
BBB 
806,567 
500 
 
5.250%, 1/01/20 – FGIC Insured 
1/13 at 100.00 
BBB 
523,745 
5,740 
 
Seminole County, Florida, Water and Sewer Revenue Refunding and Improvement Bonds, Series 
No Opt. Call 
Baa1 (4) 
6,903,441 
   
1992, 6.000%, 10/01/19 – NPFG Insured (ETM) 
     
3,530 
 
Seminole County, Florida, Water and Sewer Revenue Refunding and Improvement Bonds, Series 
No Opt. Call 
Baa1 
3,924,936 
   
1992, 6.000%, 10/01/19 – NPFG Insured 
     
4,260 
 
St. Lucie County School Board, Florida, Certificates of Participation, Master Lease Program, 
7/14 at 100.00 
AA+ 
4,353,251 
   
Series 2004A, 5.000%, 7/01/24 – AGM Insured 
     
   
St. Lucie County, Florida, Utility System Revenue Refunding Bonds, Series 1993: 
     
5,000 
 
5.500%, 10/01/15 – FGIC Insured (ETM) 
No Opt. Call 
N/R (4) 
5,560,800 
1,200 
 
5.500%, 10/01/21 – FGIC Insured (ETM) 
No Opt. Call 
N/R (4) 
1,474,524 
   
St. Petersburg, Florida, Sales Tax Revenue Bonds, Professional Sports Facility, Series 2003: 
     
1,475 
 
5.125%, 10/01/20 – AGM Insured 
10/13 at 100.00 
Aa3 
1,586,363 
1,555 
 
5.125%, 10/01/21 – AGM Insured 
10/13 at 100.00 
Aa3 
1,672,403 
2,500 
 
Tallahassee, Florida, Energy System Revenue Bonds, Series 2005, 5.000%, 10/01/29 – NPFG Insured 
10/15 at 100.00 
AA 
2,559,800 
1,245 
 
Tamarac, Florida, Sales Tax Revenue Bonds, Series 2002, 5.000%, 4/01/22 (Pre-refunded 4/01/12) – 
4/12 at 100.00 
A+ (4) 
1,285,512 
   
FGIC Insured 
     
400 
 
Tamarac, Florida, Utility System Revenue Bonds, Series 2009, 5.000%, 10/01/39 – AGC Insured 
10/19 at 100.00 
AA+ 
410,496 
1,500 
 
Tampa, Florida, Healthcare System Revenue Bonds, Allegany Health System – St. Joseph’s 
10/11 at 100.00 
Aaa 
1,521,060 
   
Hospital, Series 1993, 5.125%, 12/01/23 – NPFG Insured (ETM) 
     
10,335 
 
Tampa, Florida, Revenue Bonds, University of Tampa, Series 2006, 5.000%, 4/01/35 – CIFG Insured 
4/16 at 100.00 
N/R 
9,444,330 
1,390 
 
Venice, Florida, General Obligation Bonds, Series 2004, 5.000%, 2/01/24 – AMBAC Insured 
2/14 at 100.00 
Aa2 
1,430,852 
4,275 
 
Volusia County School Board, Florida, Certificates of Participation, Series 2005B, 5.000%, 
8/15 at 100.00 
Aa3 
4,360,372 
   
8/01/24 – AGM Insured 
     
2,000 
 
Volusia County, Florida, Gas Tax Revenue Bonds, Series 2004, 5.000%, 10/01/21 – AGM Insured 
10/14 at 100.00 
AA+ 
2,083,620 
12,000 
 
Volusia County, Florida, School Board Certificates of Participation, Master Lease Program 
8/17 at 100.00 
Aa3 
11,838,720 
   
Series 2007, 5.000%, 8/01/32 – AGM Insured 
     
1,785 
 
Volusia County, Florida, Tax Revenue Bonds, Tourist Development, Series 2004, 5.000%, 12/01/24 – 
12/14 at 100.00 
Aa3 
1,840,174 
   
AGM Insured 
     
350,730 
 
Total Florida 
   
342,117,725 
   
Georgia – 1.9% (1.3% of Total Investments) 
     
1,000 
 
Atlanta, Georgia, Water and Wastewater Revenue Bonds, Series 2004, 5.000%, 11/01/22 – 
11/14 at 100.00 
AA+ 
1,043,470 
   
AGM Insured 
     
10,000 
 
Atlanta, Georgia, Water and Wastewater Revenue Bonds, Series 2009B, 5.375%, 11/01/39 – 
11/19 at 100.00 
AA+ 
10,274,100 
   
AGM Insured 
     
2,825 
 
Cherokee County Water and Sewerage Authority, Georgia, Revenue Bonds, Refunding Series 2007, 
8/20 at 100.00 
AA 
2,847,346 
   
4.000%, 8/01/26 
     
1,520 
 
College Park Business and Industrial Development Authority, Georgia, Revenue Bonds, Public 
9/14 at 102.00 
AA– 
1,657,894 
   
Safety Project, Series 2004, 5.250%, 9/01/23 – NPFG Insured 
     
   
Fulton County Development Authority, Georgia, Revenue Bonds, Georgia Tech Molecular Science 
     
   
Building, Series 2004: 
     
1,695 
 
5.250%, 5/01/19 – NPFG Insured 
5/14 at 100.00 
Aa3 
1,841,973 
1,135 
 
5.250%, 5/01/20 – NPFG Insured 
5/14 at 100.00 
Aa3 
1,233,416 
4,500 
 
5.000%, 5/01/36 – NPFG Insured 
5/14 at 100.00 
Aa3 
4,503,645 
660 
 
Glynn-Brunswick Memorial Hospital Authority, Georgia, Revenue Bonds, Southeast Georgia Health 
10/11 at 100.00 
A– 
661,894 
   
Systems, Series 1996, 5.250%, 8/01/13 – NPFG Insured 
     
2,250 
 
Gwinnett County Hospital Authority, Georgia, Revenue Anticipation Certificates, Gwinnett 
7/19 at 100.00 
Aa3 
2,254,185 
   
Hospital System Inc. Project, Series 2007C, 5.500%, 7/01/39 – AGM Insured 
     
25,585 
 
Total Georgia 
   
26,317,923 
   
Idaho – 0.2% (0.1% of Total Investments) 
     
5 
 
Idaho Housing Agency, Single Family Mortgage Senior Bonds, Series 1994B-1, 6.750%, 7/01/22 
No Opt. Call 
Aaa 
5,239 
5 
 
Idaho Housing Agency, Single Family Mortgage Senior Bonds, Series 1994B-2, 6.900%, 7/01/26 
No Opt. Call 
Aaa 
5,083 
   
(Alternative Minimum Tax) 
     
100 
 
Idaho Housing Agency, Single Family Mortgage Senior Bonds, Series 1995B, 6.600%, 7/01/27 
1/12 at 100.00 
Aaa 
100,541 
   
(Alternative Minimum Tax) 
     
   
Idaho Housing and Finance Association, Grant and Revenue Anticipation Bonds, Federal Highway 
     
   
Trust Funds, Series 2006: 
     
1,000 
 
5.000%, 7/15/23 – NPFG Insured 
7/16 at 100.00 
Aa2 
1,065,510 
1,065 
 
5.000%, 7/15/24 – NPFG Insured 
7/16 at 100.00 
Aa2 
1,124,885 
2,175 
 
Total Idaho 
   
2,301,258 
   
Illinois – 6.9% (4.6% of Total Investments) 
     
1,050 
 
Bedford Park, Illinois, General Obligation Bonds, Series 2004A, 5.250%, 12/15/20 – AGM Insured 
12/14 at 100.00 
AA+ 
1,154,759 
7,000 
 
Chicago, Illinois, General Airport Revenue Bonds, O’Hare International Airport, Third Lien 
No Opt. Call 
AA+ 
7,130,830 
   
Refunding Series 2010C, 5.250%, 1/01/35 – AGC Insured 
     
7,200 
 
Chicago, Illinois, Third Lien General Airport Revenue Bonds, O’Hare International Airport, 
1/16 at 100.00 
A1 
7,497,576 
   
Series 2005A, 5.250%, 1/01/24 – NPFG Insured 
     
7,025 
 
De Witt, Ford, Livingston, Logan, Mc Lean and Tazewell Community College District 540, 
12/17 at 100.00 
Aa2 
5,766,963 
   
Illinois, General Obligation Bonds, Series 2007, 3.000%, 12/01/26 – AGM Insured 
     
10,330 
 
Illinois Development Finance Authority, Revenue Bonds, Provena Health, Series 1998A, 5.500%, 
11/11 at 100.00 
Baa1 
10,334,235 
   
5/15/21 – NPFG Insured 
     
3,295 
 
Illinois Educational Facilities Authority, Revenue Bonds, Robert Morris College, Series 2000, 
12/11 at 100.00 
Baa1 
3,295,494 
   
5.800%, 6/01/30 – NPFG Insured 
     
6,720 
 
Illinois Finance Authority, Revenue Bonds, The Carle Foundation, Series 2011A, 6.000%, 8/15/41 – 
8/21 at 100.00 
AA+ 
6,921,533 
   
AGM Insured 
     
22,610 
 
Illinois, General Obligation Bonds, Illinois FIRST Program, Series 2002, 5.125%, 2/01/27 – 
2/12 at 100.00 
A+ 
22,636,228 
   
FGIC Insured 
     
20,000 
 
Metropolitan Pier and Exposition Authority, Illinois, Revenue Bonds, McCormick Place Expansion 
No Opt. Call 
AAA 
2,351,200 
   
Project, Capital Appreciation Refunding Series 2010B-1, 0.000%, 6/15/45 – AGM Insured 
     
20,045 
 
Metropolitan Pier and Exposition Authority, Illinois, Revenue Bonds, McCormick Place Expansion 
No Opt. Call 
AAA 
4,513,934 
   
Project, Series 2002A, 0.000%, 12/15/35 – NPFG Insured 
     
5,920 
 
Metropolitan Pier and Exposition Authority, Illinois, Revenue Bonds, McCormick Place Expansion 
6/20 at 100.00 
AAA 
4,567,162 
   
Project, Series 2010B-1, 13.657%, 6/15/42 (IF), (5) 
     
   
Schaumburg, Illinois, General Obligation Bonds, Series 2004B: 
     
4,260 
 
5.000%, 12/01/22 – FGIC Insured 
12/14 at 100.00 
Aaa 
4,612,941 
2,365 
 
5.000%, 12/01/23 – FGIC Insured 
12/14 at 100.00 
Aaa 
2,555,075 
4,000 
 
Southwestern Illinois Development Authority, School Revenue Bonds, Triad School District 2, 
No Opt. Call 
A+ 
1,712,840 
   
Madison County, Illinois, Series 2006, 0.000%, 10/01/25 – NPFG Insured 
     
   
Williamson & Johnson Counties Community Unit School District 2, Marion, Illinois, General 
     
   
Obligation Bonds, Series 2011: 
     
930 
 
7.000%, 12/01/21 – AGM Insured 
12/20 at 100.00 
AA+ 
1,105,928 
1,035 
 
7.000%, 12/01/22 – AGM Insured 
12/20 at 100.00 
AA+ 
1,197,919 
1,155 
 
7.000%, 12/01/23 – AGM Insured 
12/20 at 100.00 
AA+ 
1,323,919 
1,065 
 
7.000%, 12/01/26 – AGM Insured 
12/20 at 100.00 
AA+ 
1,202,353 
2,085 
 
7.250%, 12/01/29 – AGM Insured 
12/20 at 100.00 
AA+ 
2,352,234 
2,295 
 
7.250%, 12/01/30 – AGM Insured 
12/20 at 100.00 
AA+ 
2,575,220 
130,385 
 
Total Illinois 
   
94,808,343 
   
Indiana – 4.6% (3.1% of Total Investments) 
     
2,030 
 
Decatur Township-Marion County Multi-School Building Corporation, Indiana, First Mortgage 
7/13 at 100.00 
AA+ (4) 
2,207,584 
   
Bonds, Series 2003, 5.000%, 7/15/20 (Pre-refunded 7/15/13) – FGIC Insured 
     
5,000 
 
Indiana Finance Authority, Revenue Bonds, Trinity Health Care Group, Refunding Series 2010B., 
12/20 at 100.00 
AA 
4,949,100 
   
5.000%, 12/01/37 
     
8,000 
 
Indiana Municipal Power Agency, Power Supply Revenue Bonds, Series 2007A, 5.000%, 1/01/42 – 
1/17 at 100.00 
A+ 
7,956,320 
   
NPFG Insured 
     
5,000 
 
Indianapolis Local Public Improvement Bond Bank Bonds, Indiana, PILOT Infrastructure Project 
No Opt. Call 
AA+ 
5,084,000 
   
Revenue Bonds, Series 2010F, 5.000%, 1/01/35 – AGM Insured 
     
20,000 
 
Indianapolis Local Public Improvement Bond Bank, Indiana, Series 1999E, 0.000%, 2/01/28 – 
No Opt. Call 
AA 
8,640,400 
   
AMBAC Insured 
     
9,615 
 
Indianapolis Local Public Improvement Bond Bank, Indiana, Waterworks Project Series 2009A, 
1/19 at 100.00 
AA+ 
10,070,463 
   
5.500%, 1/01/38 – AGC Insured 
     
3,250 
 
Indianapolis Local Public Improvement Bond Bank, Indiana, Waterworks Project, Series 2002A, 
7/12 at 100.00 
AAA 
3,400,995 
   
5.250%, 7/01/33 (Pre-refunded 7/01/12) – NPFG Insured 
     
1,340 
 
Monroe-Gregg Grade School Building Corporation, Morgan County, Indiana, First Mortgage Bonds, 
1/14 at 100.00 
AA+ (4) 
1,486,958 
   
Series 2004, 5.000%, 1/15/25 (Pre-refunded 1/15/14) – AGM Insured 
     
5,000 
 
Noblesville Redevelopment Authority, Indiana, Economic Development Lease Rental Bonds, Exit 10 
7/13 at 100.00 
AA– 
5,052,400 
   
Project, Series 2003, 5.000%, 1/15/28 – AMBAC Insured 
     
10,000 
 
Purdue University, Indiana, Student Fee Bonds, Series 2002O, 5.000%, 7/01/19 (Pre-refunded 
1/12 at 100.00 
Aaa 
10,205,300 
   
1/01/12) – NPFG Insured 
     
3,705 
 
Whitley County Middle School Building Corporation, Columbia City, Indiana, First Mortgage 
7/13 at 100.00 
Aa3 (4) 
4,042,081 
   
Bonds, Series 2003, 5.000%, 7/15/16 (Pre-refunded 7/15/13) – AGM Insured 
     
72,940 
 
Total Indiana 
   
63,095,601 
   
Kansas – 0.7% (0.4% of Total Investments) 
     
2,055 
 
Kansas Turnpike Authority, Revenue Bonds, Series 2004A-2, 5.000%, 9/01/23 – AGM Insured 
9/14 at 101.00 
AA+ 
2,187,301 
   
Neosho County Unified School District 413, Kansas, General Obligation Bonds, Series 2006: 
     
2,145 
 
5.000%, 9/01/27 – AGM Insured 
9/14 at 100.00 
Aa3 
2,194,464 
4,835 
 
5.000%, 9/01/29 – AGM Insured 
9/14 at 100.00 
Aa3 
4,914,246 
9,035 
 
Total Kansas 
   
9,296,011 
   
Kentucky – 3.0% (2.0% of Total Investments) 
     
3,870 
 
Kenton County School District Finance Corporation, Kentucky, School Building Revenue Bonds, 
6/14 at 100.00 
Aa3 
4,180,955 
   
Series 2004, 5.000%, 6/01/20 – NPFG Insured 
     
   
Kentucky State Property and Buildings Commission, Revenue Bonds, Project 93, Refunding 
     
   
Series 2009: 
     
3,860 
 
5.250%, 2/01/20 – AGC Insured 
2/19 at 100.00 
AA+ 
4,429,736 
10,000 
 
5.250%, 2/01/24 – AGC Insured 
2/19 at 100.00 
AA+ 
10,988,500 
7,500 
 
Kentucky Turnpike Authority, Economic Development Road Revenue Bonds, Revitalization Project, 
7/16 at 100.00 
AA+ 
7,863,300 
   
Series 2006B, 5.000%, 7/01/25 – AMBAC Insured 
     
12,980 
 
Louisville and Jefferson County Metropolitan Sewer District, Kentucky, Sewer and Drainage 
11/11 at 101.00 
AA– 
13,242,715 
   
System Revenue Bonds, Series 2001A, 5.500%, 5/15/34 – NPFG Insured 
     
38,210 
 
Total Kentucky 
   
40,705,206 
   
Louisiana – 4.6% (3.1% of Total Investments) 
     
5,000 
 
DeSoto Parish, Louisiana, Pollution Control Revenue Refunding Bonds, Cleco Utility Group Inc. 
9/11 at 100.00 
BBB 
5,001,350 
   
Project, Series 1999, 5.875%, 9/01/29 – AMBAC Insured 
     
3,025 
 
Lafayette City and Parish, Louisiana, Utilities Revenue Bonds, Series 2004, 5.250%, 11/01/22 – 
11/14 at 100.00 
A+ 
3,293,318 
   
NPFG Insured 
     
4,525 
 
Louisiana Public Facilities Authority, Revenue Bonds, Baton Rouge General Hospital, Series 
7/14 at 100.00 
Baa1 
4,695,185 
   
2004, 5.250%, 7/01/24 – NPFG Insured 
     
   
Louisiana State, Gasoline and Fuels Tax Revenue Bonds, Series 2005A: 
     
2,400 
 
5.000%, 5/01/25 – FGIC Insured 
5/15 at 100.00 
Aa1 
2,514,168 
4,415 
 
5.000%, 5/01/26 – FGIC Insured 
5/15 at 100.00 
Aa1 
4,610,320 
5,000 
 
5.000%, 5/01/27 – FGIC Insured 
5/15 at 100.00 
Aa1 
5,201,650 
   
Louisiana State, Gasoline and Fuels Tax Revenue Bonds, Series 2006A: 
     
3,300 
 
4.750%, 5/01/39 – AGM Insured (UB) 
5/16 at 100.00 
AA+ 
3,262,116 
35,725 
 
4.500%, 5/01/41 – FGIC Insured (UB) 
5/16 at 100.00 
Aa1 
34,279,924 
38 
 
Louisiana State, Gasoline and Fuels Tax Revenue Bonds, Series 2006, Residuals 660-1, 15.955%, 
5/16 at 100.00 
Aa1 
32,131 
   
5/01/34 – FGIC Insured (IF) 
     
63,428 
 
Total Louisiana 
   
62,890,162 
   
Maine – 0.2% (0.2% of Total Investments) 
     
3,000 
 
Maine Health and Higher Educational Facilities Authority, Revenue Bonds, Series 2003B, 5.000%, 
7/13 at 100.00 
Aaa 
3,237,750 
   
7/01/28 (Pre-refunded 7/01/13) – AGM Insured 
     
   
Maryland – 0.3% (0.2% of Total Investments) 
     
5,345 
 
Baltimore, Maryland, Senior Lien Convention Center Hotel Revenue Bonds, Series 2006A, 5.250%, 
9/16 at 100.00 
Baa3 
4,721,666 
   
9/01/28 – SYNCORA GTY Insured 
     
   
Massachusetts – 5.2% (3.5% of Total Investments) 
     
4,500 
 
Massachusetts Department of Transportation, Metropolitan Highway System Revenue Bonds, 
1/20 at 100.00 
AA 
4,664,115 
   
Commonwealth Contract Assistance Secured, Refunding Series 2010B, 5.000%, 1/01/35 
     
22,500 
 
Massachusetts Development Finance Authority, Revenue Bonds, WGBH Educational Foundation, 
1/12 at 101.00 
A (4) 
23,188,050 
   
Series 2002A, 5.375%, 1/01/42 (Pre-refunded 1/01/12) – AMBAC Insured 
     
5,330 
 
Massachusetts Health and Educational Facilities Authority, Revenue Bonds, Harvard University, 
12/19 at 100.00 
AAA 
6,358,690 
   
Tender Option Bond Trust 2010-20W, 13.598%, 12/15/34 (IF), (5) 
     
11,000 
 
Massachusetts School Building Authority, Dedicated Sales Tax Revenue Bonds, Series 2005A, 
8/15 at 100.00 
AA+ 
11,924,880 
   
5.000%, 8/15/23 – AGM Insured (UB) 
     
15,000 
 
Massachusetts State, Special Obligation Dedicated Tax Revenue Bonds, Series 2004, 5.250%, 
1/14 at 100.00 
A1 (4) 
16,626,750 
   
1/01/23 (Pre-refunded 1/01/14) – FGIC Insured 
     
7,255 
 
Massachusetts Water Resources Authority, General Revenue Bonds, Series 2007A, 4.500%, 
2/17 at 100.00 
AA+ 
6,885,358 
   
8/01/46 – AGM Insured (UB), (5) 
     
1,500 
 
University of Massachusetts Building Authority, Senior Lien Project Revenue Bonds, 
11/14 at 100.00 
A+ (4) 
1,729,395 
   
Series 2004-1, 5.375%, 11/01/20 (Pre-refunded 11/01/14) – AMBAC Insured 
     
67,085 
 
Total Massachusetts 
   
71,377,238 
   
Michigan – 2.2% (1.5% of Total Investments) 
     
5,490 
 
Detroit City School District, Wayne County, Michigan, Unlimited Tax School Building and Site 
No Opt. Call 
AA+ 
5,801,942 
   
Improvement Bonds, Series 2001A, 6.000%, 5/01/29 – AGM Insured (UB) 
     
6,000 
 
Detroit, Michigan, General Obligation Bonds, Series 2001A-1, 5.375%, 4/01/18 – NPFG Insured 
10/11 at 100.00 
Baa1 
5,860,020 
7,420 
 
Detroit, Michigan, Senior Lien Water Supply System Revenue Bonds, Series 1997A, 5.000%, 
10/11 at 100.00 
A+ 
7,166,830 
   
7/01/27 – NPFG Insured 
     
1,085 
 
Grand Rapids Community College, Kent County, Michigan, General Obligation Refunding Bonds, 
5/13 at 100.00 
Aa1 
1,157,890 
   
Series 2003, 5.250%, 5/01/20 – AMBAC Insured 
     
10,000 
 
Wayne County, Michigan, Limited Tax General Obligation Airport Hotel Revenue Bonds, Detroit 
12/11 at 101.00 
BBB+ 
10,014,000 
   
Metropolitan Wayne County Airport, Series 2001A, 5.250%, 12/01/25 – NPFG Insured 
     
29,995 
 
Total Michigan 
   
30,000,682 
   
Minnesota – 2.1% (1.4% of Total Investments) 
     
5,000 
 
Minneapolis, Minnesota, Health Care System Revenue Bonds,S Fairview Health Services, Series 
11/18 at 100.00 
AA+ 
5,454,850 
   
2008B, 6.500%, 11/15/38 – AGC Insured 
     
5,000 
 
Minnesota State, General Obligation Bonds, Various Purpose, Refunding Series 2010D, 
No Opt. Call 
AAA 
6,020,200 
   
5.000%, 8/01/18 
     
4,000 
 
Northern Municipal Power Agency, Minnesota, Electric System Revenue Bonds, Refunding Series 
No Opt. Call 
AA+ 
4,501,640 
   
2009A, 5.000%, 1/01/15 – AGC Insured 
     
12,895 
 
Saint Paul Housing and Redevelopment Authority, Minnesota, Multifamily Housing Revenue Bonds, 
12/11 at 102.00 
N/R (4) 
13,466,249 
   
Marian Center Project, Series 2001A, 6.450%, 6/20/43 (Pre-refunded 12/20/11) 
     
26,895 
 
Total Minnesota 
   
29,442,939 
   
Montana – 0.2% (0.1% of Total Investments) 
     
3,000 
 
Montana Facility Finance Authority, Hospital Revenue Bonds, Benefis Health System Obligated 
1/21 at 100.00 
AA+ 
3,184,650 
   
Group, Series 2011A, 5.750%, 1/01/31 – AGM Insured 
     
   
Nebraska – 2.4% (1.6% of Total Investments) 
     
27,125 
 
Lincoln, Nebraska, Electric System Revenue Bonds, Series 2007A, 4.500%, 9/01/37 – FGIC 
9/17 at 100.00 
AA 
26,293,348 
   
Insured (UB) 
     
5,000 
 
Municipal Energy Agency of Nebraska, Power Supply System Revenue and Refunding Bonds, 
4/19 at 100.00 
AA+ 
5,246,150 
   
Series 2009A, 5.375%, 4/01/39 – BHAC Insured 
     
1,000 
 
Nebraska Public Power District, General Revenue Bonds, Series 2005A, 5.000%, 1/01/25 – 
1/15 at 100.00 
AA+ 
1,051,950 
   
AGM Insured 
     
33,125 
 
Total Nebraska 
   
32,591,448 
   
Nevada – 7.1% (4.7% of Total Investments) 
     
3,000 
 
Clark County, Nevada, Airport Revenue Bonds, Subordinate Lien Series 2009C, 5.000%, 7/01/26 – 
No Opt. Call 
AA+ 
3,126,330 
   
AGM Insured 
     
8,475 
 
Clark County, Nevada, General Obligation Bank Bonds, Southern Nevada Water Authority Loan, 
12/12 at 100.00 
AA+ 
8,521,867 
   
Series 2002, 5.000%, 6/01/32 – NPFG Insured 
     
3,630 
 
Clark County, Nevada, General Obligation Bank Bonds, Southern Nevada Water Authority Loan, 
12/12 at 100.00 
AA+ (4) 
3,860,215 
   
Series 2002, 5.000%, 6/01/32 (Pre-refunded 12/01/12) – NPFG Insured 
     
16,840 
 
Clark County, Nevada, Passenger Facility Charge Revenue Bonds, Las Vegas-McCarran 
1/20 at 100.00 
AA+ 
16,958,890 
   
International Airport, Series 2010A, 5.250%, 7/01/39 – AGM Insured 
     
7,370 
 
Clark County, Nevada, Subordinate Lien Airport Revenue Bonds, Series 2004A-2, 5.125%, 
7/14 at 100.00 
Aa3 
7,475,391 
   
7/01/25 – FGIC Insured 
     
   
Director of Nevada State Department of Business and Industry, Revenue Bonds, Las Vegas 
     
   
Monorail Project, First Tier, Series 2000: 
     
15,000 
 
5.625%, 1/01/34 – AMBAC Insured (6) 
1/12 at 100.00 
N/R 
3,600,450 
11,400 
 
5.375%, 1/01/40 – AMBAC Insured (6) 
1/12 at 100.00 
N/R 
2,735,658 
14,985 
 
Reno, Nevada, Capital Improvement Revenue Bonds, Series 2002, 5.375%, 6/01/32 – FGIC Insured 
6/12 at 100.00 
A 
14,385,450 
25,300 
 
Reno, Nevada, Capital Improvement Revenue Bonds, Series 2002, 5.375%, 6/01/32 (Pre-refunded 
6/12 at 100.00 
A3 (4) 
26,392,707 
   
6/01/12) – FGIC Insured 
     
10,000 
 
Reno, Nevada, Senior Lien Sales and Room Tax Revenue Bonds, Reno Transportation Rail Access 
6/12 at 100.00 
N/R (4) 
10,413,500 
   
Corridor Project, Series 2002, 5.125%, 6/01/27 (Pre-refunded 6/01/12) – AMBAC Insured 
     
116,000 
 
Total Nevada 
   
97,470,458 
   
New Jersey – 4.2% (2.8% of Total Investments) 
     
   
Essex County Improvement Authority, New Jersey, Guaranteed Revenue Bonds, Project 
     
   
Consolidation, Series 2004: 
     
2,000 
 
5.125%, 10/01/21 – NPFG Insured 
10/14 at 100.00 
Aa2 
2,131,480 
2,250 
 
5.125%, 10/01/22 – NPFG Insured 
10/14 at 100.00 
Aa2 
2,382,503 
   
New Jersey Economic Development Authority, Revenue Bonds, Motor Vehicle Surcharge, 
     
   
Series 2004A: 
     
3,850 
 
5.000%, 7/01/22 – NPFG Insured 
7/14 at 100.00 
A 
4,024,790 
3,850 
 
5.000%, 7/01/23 – NPFG Insured 
7/14 at 100.00 
A 
4,006,272 
26,000 
 
New Jersey Turnpike Authority, Revenue Bonds, Refunding Series 2005D-1, 5.250%, 1/01/26 – 
No Opt. Call 
AA+ 
29,245,580 
   
AGM Insured 
     
   
New Jersey Turnpike Authority, Revenue Bonds, Series 2003A: 
     
8,250 
 
5.000%, 1/01/19 – FGIC Insured 
7/13 at 100.00 
A+ 
8,790,128 
2,000 
 
5.000%, 1/01/23 – AGM Insured 
7/13 at 100.00 
AA+ 
2,080,560 
3,320 
 
New Jersey Turnpike Authority, Revenue Bonds, Series 2005A, 5.000%, 1/01/21 – AGM Insured 
1/15 at 100.00 
AA+ 
3,512,726 
1,330 
 
Washington Township Board of Education, Mercer County, New Jersey, General Obligation Bonds, 
No Opt. Call 
Aa2 
1,582,620 
   
Series 2005, 5.250%, 1/01/26 – AGM Insured 
     
52,850 
 
Total New Jersey 
   
57,756,659 
   
New Mexico – 1.3% (0.9% of Total Investments) 
     
3,660 
 
San Juan County, New Mexico, Subordinate Gross Receipts Tax Revenue Bonds, Series 2005, 
6/15 at 100.00 
Aa3 
3,816,538 
   
5.000%, 6/15/25 – NPFG Insured 
     
13,600 
 
University of New Mexico, System Improvement Subordinated Lien Revenue Bonds, Series 2007A, 
6/17 at 100.00 
AA+ 
13,899,472 
   
5.000%, 6/01/36 – AGM Insured 
     
17,260 
 
Total New Mexico 
   
17,716,010 
   
New York – 7.8% (5.2% of Total Investments) 
     
1,880 
 
Dormitory Authority of the State of New York, FHA-Insured Mortgage Revenue Bonds, Montefiore 
2/15 at 100.00 
BBB 
2,000,677 
   
Hospital, Series 2004, 5.000%, 8/01/23 – FGIC Insured 
     
7,225 
 
Dormitory Authority of the State of New York, Revenue Bonds, Non State Supported Debt, Cornell 
7/20 at 100.00 
Aa1 
7,549,908 
   
University, Series 2010A, 5.000%, 7/01/35 
     
3,335 
 
Dormitory Authority of the State of New York, State Personal Income Tax Revenue Bonds, Series 
3/15 at 100.00 
AAA 
3,601,266 
   
2005F, 5.000%, 3/15/24 – AMBAC Insured 
     
3,820 
 
Hudson Yards Infrastructure Corporation, New York, Revenue Bonds, Series 2006A, 4.500%, 
2/17 at 100.00 
A 
3,243,027 
   
2/15/47 – NPFG Insured 
     
12,500 
 
Long Island Power Authority, New York, Electric System General Revenue Bonds, Series 2006A, 
6/16 at 100.00 
A– 
13,131,375 
   
5.000%, 12/01/25 – FGIC Insured 
     
6,900 
 
Long Island Power Authority, New York, Electric System Revenue Bonds, Series 2006F, 4.250%, 
11/16 at 100.00 
A– 
6,541,545 
   
5/01/33 – NPFG Insured 
     
   
Metropolitan Transportation Authority, New York, State Service Contract Refunding Bonds, 
     
   
Series 2002A: 
     
1,500 
 
5.000%, 7/01/21 – FGIC Insured 
7/12 at 100.00 
AA– 
1,547,955 
5,000 
 
5.000%, 7/01/25 – FGIC Insured 
7/12 at 100.00 
AA– 
5,086,650 
3,025 
 
Monroe County Industrial Development Corporation, New York, FHA Insured Mortgage Revenue 
2/21 at 100.00 
Aa2 
3,186,505 
   
Bonds, Unity Hospital of Rochester Project, Series 2010, 5.500%, 8/15/40 
     
2,615 
 
New York City Industrial Development Agency, New York, Revenue Bonds, Yankee Stadium Project 
3/19 at 100.00 
AA+ 
2,902,912 
   
PILOT, Series 2009A, 7.000%, 3/01/49 – AGC Insured 
     
5,000 
 
New York City, New York, General Obligation Bonds, Fiscal Series 2005F-1, 5.000%, 9/01/21 – 
9/15 at 100.00 
AA 
5,496,150 
   
AMBAC Insured 
     
10,000 
 
New York City, New York, General Obligation Bonds, Fiscal Series 2005M, 5.000%, 4/01/26 – 
4/15 at 100.00 
AA 
10,424,600 
   
FGIC Insured 
     
5,000 
 
New York State Thruway Authority, General Revenue Bonds, Series 2005F, 5.000%, 1/01/26 – 
1/15 at 100.00 
A+ 
5,189,900 
   
AMBAC Insured 
     
14,000 
 
New York State Thruway Authority, General Revenue Bonds, Series 2005G, 5.000%, 1/01/30 – 
7/15 at 100.00 
AA+ 
14,449,260 
   
AGM Insured 
     
2,000 
 
New York State Tobacco Settlement Financing Corporation, Tobacco Settlement Asset-Backed and 
6/13 at 100.00 
AA– 
2,127,960 
   
State Contingency Contract-Backed Bonds, Series 2003A-1, 5.250%, 6/01/22 – AMBAC Insured 
     
   
New York State Urban Development Corporation, State Personal Income Tax Revenue Bonds, 
     
   
Series 2004A-1: 
     
1,000 
 
5.000%, 3/15/23 – FGIC Insured 
3/14 at 100.00 
AAA 
1,075,070 
5,000 
 
5.000%, 3/15/25 – FGIC Insured 
3/14 at 100.00 
AAA 
5,303,400 
3,650 
 
New York State Urban Development Corporation, Service Contract Revenue Bonds, Series 2005B, 
3/15 at 100.00 
AAA 
3,895,682 
   
5.000%, 3/15/25 – AGM Insured (UB) 
     
10,000 
 
Triborough Bridge and Tunnel Authority, New York, Subordinate Lien General Purpose Revenue 
11/12 at 100.00 
Aa3 
10,073,400 
   
Refunding Bonds, Series 2002E, 5.000%, 11/15/32 – NPFG Insured 
     
103,450 
 
Total New York 
   
106,827,242 
   
North Carolina – 1.3% (0.8% of Total Investments) 
     
   
Mooresville, North Carolina, Enterprise System Revenue Bonds, Series 2004: 
     
2,115 
 
5.000%, 5/01/22 – FGIC Insured 
5/14 at 100.00 
AA– 
2,271,256 
2,575 
 
5.000%, 5/01/26 – FGIC Insured 
5/14 at 100.00 
AA– 
2,634,972 
5,250 
 
North Carolina Municipal Power Agency 1, Catawba Electric Revenue Bonds, Series 2003A, 5.250%, 
1/13 at 100.00 
AA+ 
5,555,025 
   
1/01/16 – AGM Insured 
     
   
Raleigh Durham Airport Authority, North Carolina, Airport Revenue Bonds, Series 2005A: 
     
3,205 
 
5.000%, 5/01/23 – AMBAC Insured 
5/15 at 100.00 
Aa3 
3,365,603 
3,295 
 
5.000%, 5/01/24 – AMBAC Insured 
5/15 at 100.00 
Aa3 
3,439,618 
16,440 
 
Total North Carolina 
   
17,266,474 
   
North Dakota – 0.5% (0.3% of Total Investments) 
     
   
Grand Forks, North Dakota, Sales Tax Revenue Bonds, Alerus Project, Series 2005A: 
     
2,195 
 
5.000%, 12/15/22 – NPFG Insured 
12/15 at 100.00 
Aa3 
2,367,593 
1,355 
 
5.000%, 12/15/23 – NPFG Insured 
12/15 at 100.00 
Aa3 
1,448,305 
3,000 
 
5.000%, 12/15/24 – NPFG Insured 
12/15 at 100.00 
Aa3 
3,177,930 
6,550 
 
Total North Dakota 
   
6,993,828 
   
Ohio – 3.9% (2.6% of Total Investments) 
     
2,650 
 
Cleveland State University, Ohio, General Receipts Bonds, Series 2004, 5.250%, 6/01/24 – 
6/14 at 100.00 
A+ 
2,775,690 
   
FGIC Insured 
     
2,000 
 
Columbus City School District, Franklin County, Ohio, General Obligation Bonds, Series 2004, 
12/14 at 100.00 
AA+ (4) 
2,303,220 
   
5.250%, 12/01/25 (Pre-refunded 12/01/14) – AGM Insured 
     
2,385 
 
Columbus, Ohio, Tax Increment Financing Bonds, Easton Project, Series 2004A, 5.000%, 
6/14 at 100.00 
BBB+ 
2,457,456 
   
12/01/22 – AMBAC Insured 
     
2,205 
 
Hamilton City School District, Ohio, General Obligation Bonds, Series 2005, 5.000%, 12/01/24 – 
6/15 at 100.00 
Baa1 
2,282,638 
   
NPFG Insured 
     
19,595 
 
Hamilton County, Ohio, Sales Tax Bonds, Subordinate Lien, Series 2006, 4.250%, 12/01/32 – 
12/16 at 100.00 
A1 
17,859,275 
   
AMBAC Insured 
     
20,100 
 
Lucas County, Ohio, Hospital Revenue Bonds, ProMedica Healthcare Obligated Group, Series 1999, 
11/11 at 100.00 
AA– 
20,108,643 
   
5.375%, 11/15/39 – AMBAC Insured 
     
3,000 
 
Ross Local School District, Butler County, Ohio, General Obligation Bonds, Series 2003, 
12/13 at 100.00 
Aa2 (4) 
3,321,000 
   
5.000%, 12/01/28 (Pre-refunded 12/01/13) – AGM Insured 
     
2,000 
 
University of Akron, Ohio, General Receipts Bonds, Federally Taxable Build America Bonds, 
1/20 at 100.00 
AA+ 
2,078,620 
   
Series 2010B, 5.000%, 1/01/29 – AGM Insured 
     
53,935 
 
Total Ohio 
   
53,186,542 
   
Oklahoma – 2.4% (1.6% of Total Investments) 
     
3,500 
 
Oklahoma Capitol Improvement Authority, State Facilities Revenue Bonds, Series 2005F, 5.000%, 
7/15 at 100.00 
AA 
3,762,885 
   
7/01/24 – AMBAC Insured 
     
   
Oklahoma City Water Utilities Trust, Oklahoma, Water and Sewer Revenue Bonds, Series 2010: 
     
1,000 
 
5.375%, 7/01/40 
No Opt. Call 
AAA 
1,086,470 
1,500 
 
5.000%, 7/01/40 
7/21 at 100.00 
AAA 
1,574,760 
1,355 
 
Oklahoma Housing Finance Agency, GNMA Collateralized Single Family Mortgage Revenue Bonds, 
No Opt. Call 
AAA 
1,361,612 
   
Series 1987A, 7.997%, 8/01/18 (Alternative Minimum Tax) 
     
21,000 
 
Oklahoma Municipal Power Authority, Power Supply System Revenue Bonds, Series 2007, 4.500%, 
1/17 at 100.00 
A 
19,411,560 
   
1/01/47 – FGIC Insured 
     
4,880 
 
University of Oklahoma, Student Housing Revenue Bonds, Series 2004, 5.000%, 7/01/22 – 
7/14 at 100.00 
Aa3 
5,058,559 
   
AMBAC Insured 
     
33,235 
 
Total Oklahoma 
   
32,255,846 
   
Oregon – 0.5% (0.3% of Total Investments) 
     
2,535 
 
Oregon Department of Administrative Services, Certificates of Participation, Series 2005A, 
5/15 at 100.00 
AA+ 
2,639,670 
   
5.000%, 5/01/25 – AGM Insured 
     
4,000 
 
Oregon Department of Administrative Services, State Lottery Revenue Bonds, Series 2011A, 
4/21 at 100.00 
AAA 
4,416,120 
   
5.250%, 4/01/31 
     
6,535 
 
Total Oregon 
   
7,055,790 
   
Pennsylvania – 5.1% (3.4% of Total Investments) 
     
2,165 
 
Allegheny County Sanitary Authority, Pennsylvania, Sewerage Revenue Bonds, Series 2010, 
No Opt. Call 
AA+ 
2,189,833 
   
5.000%, 6/01/40 – AGM Insured 
     
7,925 
 
Commonwealth Financing Authority, Pennsylvania, State Appropriation Lease Bonds, Series 2006A, 
6/16 at 100.00 
AA+ 
8,293,196 
   
5.000%, 6/01/26 – AGM Insured (UB) 
     
5,250 
 
Delaware River Port Authority, New Jersey and Pennsylvania, Revenue Bonds, Series 2010E, 
1/20 at 100.00 
AA+ 
5,280,240 
   
5.000%, 1/01/40 – AGM Insured 
     
1,565 
 
Montgomery County Industrial Development Authority, Pennsylvania, FHA Insured Mortgage Revenue 
8/20 at 100.00 
AA 
1,611,715 
   
Bonds, New Regional Medical Center Project, Series 2010, 5.375%, 8/01/38 
     
1,800 
 
Pennsylvania Higher Educational Facilities Authority, Revenue Bonds, Drexel University, Series 
5/15 at 100.00 
A 
1,827,864 
   
2005A, 5.000%, 5/01/28 – NPFG Insured 
     
   
Pennsylvania Public School Building Authority, Lease Revenue Bonds, School District of 
     
   
Philadelphia, Series 2006B: 
     
5,000 
 
4.500%, 6/01/32 – AGM Insured 
12/16 at 100.00 
AA+ 
4,897,050 
6,740 
 
4.500%, 6/01/32 – AGM Insured (UB) 
12/16 at 100.00 
AA+ 
6,601,223 
2,625 
 
Pennsylvania Turnpike Commission, Turnpike Revenue Bonds, Series 2006A, 5.000%, 12/01/26 – 
6/16 at 100.00 
Aa3 
2,744,595 
   
AMBAC Insured 
     
10,000 
 
Philadelphia, Pennsylvania, Airport Revenue Bonds, Series 2010A, 5.000%, 6/15/40 – AGM Insured 
6/20 at 100.00 
AA+ 
9,991,800 
7,055 
 
Pittsburgh and Allegheny County Sports and Exhibition Authority, Pennsylvania, Hotel Room 
8/20 at 100.00 
AA+ 
7,050,132 
   
Excise Tax Revenue Bonds, Refunding Series 2010, 5.000%, 2/01/35 – AGC Insured 
     
5,180 
 
Pittsburgh and Allegheny County Sports and Exhibition Authority, Pennsylvania, Sales Tax 
8/20 at 100.00 
AA+ 
5,310,225 
   
Revenue Bonds, Refunding Series 2010, 5.000%, 2/01/31 – AGM Insured 
     
6,335 
 
Radnor Township School District, Delaware County, Pennsylvania, General Obligation Bonds, 
8/15 at 100.00 
Aa2 
6,568,065 
   
Series 2005B, 5.000%, 2/15/30 – AGM Insured 
     
3,285 
 
Reading School District, Berks County, Pennsylvania, General Obligation Bonds, Series 2005: 
     
   
5.000%, 1/15/22 – AGM Insured 
1/16 at 100.00 
AA+ 
3,517,939 
3,450 
 
Reading School District, Berks County, Pennsylvania, General Obligation Bonds, Series 2005: 
     
   
5.000%, 1/15/23 – AGM Insured (UB) 
1/16 at 100.00 
AA+ 
3,672,698 
68,375 
 
Total Pennsylvania 
   
69,556,575 
   
Puerto Rico – 0.8% (0.6% of Total Investments) 
     
2,500 
 
Puerto Rico Electric Power Authority, Power Revenue Bonds, Series 2005RR, 5.000%, 7/01/30 
7/15 at 100.00 
AAA 
2,912,525 
   
(Pre-refunded 7/01/15) – SYNCORA GTY Insured 
     
2,000 
 
Puerto Rico Highway and Transportation Authority, Highway Revenue Bonds, Series 2003G, 5.250%, 
7/13 at 100.00 
A3 
2,068,980 
   
7/01/19 – FGIC Insured 
     
1,550 
 
Puerto Rico Municipal Finance Agency, Series 2005C, 5.250%, 8/01/21 – CIFG Insured 
No Opt. Call 
A3 
1,635,917 
36,000 
 
Puerto Rico Sales Tax Financing Corporation, Sales Tax Revenue Bonds, Series 2007A, 0.000%, 
No Opt. Call 
Aa2 
4,848,120 
   
8/01/42 – NPFG Insured 
     
42,050 
 
Total Puerto Rico 
   
11,465,542 
   
Rhode Island – 0.3% (0.2% of Total Investments) 
     
2,195 
 
Providence Housing Development Corporation, Rhode Island, FHA-Insured Section 8 Assisted 
1/12 at 100.00 
Baa1 
2,199,061 
   
Mortgage Revenue Refunding Bonds, Barbara Jordan Apartments, Series 1994A, 6.750%, 
     
   
7/01/25 – NPFG Insured 
     
1,405 
 
Rhode Island Health & Educational Building Corporation, Higher Education Auxiliary Enterprise 
9/14 at 100.00 
A1 
1,494,147 
   
Revenue Bonds, Series 2004A, 5.500%, 9/15/24 – AMBAC Insured 
     
3,600 
 
Total Rhode Island 
   
3,693,208 
   
South Carolina – 5.6% (3.8% of Total Investments) 
     
14,650 
 
Anderson County School District 5, South Carolina, General Obligation Bonds, Series 2008, 
No Opt. Call 
AA+ 
15,685,169 
   
Trust 1181, 9.878%, 8/01/15 – AGM Insured (IF) 
     
10,000 
 
Beaufort County, South Carolina, Tax Increment Bonds, New River Redevelopment Project, Series 
12/12 at 100.00 
A+ 
10,085,000 
   
2002, 5.000%, 6/01/27 – NPFG Insured 
     
   
Medical University Hospital Authority, South Carolina, FHA-Insured Mortgage Revenue Bonds, 
     
   
Series 2004A: 
     
2,000 
 
5.250%, 8/15/22 – NPFG Insured 
8/14 at 100.00 
Baa1 
2,125,840 
2,605 
 
5.250%, 8/15/23 – NPFG Insured 
8/14 at 100.00 
Baa1 
2,747,702 
2,385 
 
5.250%, 8/15/25 – NPFG Insured 
8/14 at 100.00 
Baa1 
2,467,116 
5,880 
 
Piedmont Municipal Power Agency, South Carolina, Electric Revenue Bonds, Series 1988, 0.000%, 
No Opt. Call 
N/R 
5,484,452 
   
1/01/13 – AMBAC Insured 
     
2,500 
 
Saint Peters Parish/Jasper County Public Facilities Corporation, South Carolina, Installment 
4/21 at 100.00 
AA+ 
2,444,400 
   
Purchase Revenue Bonds, County Office Building Projects, Series 2011A, 5.250%, 4/01/44 – 
     
   
AGC Insured 
     
8,000 
 
South Carolina JOBS Economic Development Authority, Industrial Revenue Bonds, South Carolina 
11/12 at 100.00 
A 
8,264,640 
   
Electric and Gas Company, Series 2002A, 5.200%, 11/01/27 – AMBAC Insured 
     
10,000 
 
South Carolina JOBS Economic Development Authority, Industrial Revenue Bonds, South Carolina 
11/12 at 100.00 
A 
9,829,900 
   
Electric and Gas Company, Series 2002B, 5.450%, 11/01/32 – AMBAC Insured (Alternative 
     
   
Minimum Tax) 
     
1,250 
 
South Carolina Jobs-Economic Development Authority, Hospital Revenue Bonds, Palmetto Health, 
8/21 at 100.00 
AA+ 
1,307,025 
   
Refunding Series 2011A, 6.500%, 8/01/39 – AGM Insured 
     
17,500 
 
South Carolina Transportation Infrastructure Bank, Revenue Bonds, Series 2007A, 4.500%, 
10/16 at 100.00 
A1 
16,805,075 
   
10/01/34 – SYNCORA GTY Insured 
     
76,770 
 
Total South Carolina 
   
77,246,319 
   
Texas – 6.5% (4.3% of Total Investments) 
     
4,405 
 
Bexar County, Texas, Venue Project Revenue Bonds, Refunding Series 2010, 5.500%, 8/15/49 – 
8/19 at 100.00 
AA+ 
4,509,751 
   
AGM Insured 
     
421 
 
Capital Area Housing Finance Corporation, Texas, FNMA Backed Single Family Mortgage Revenue 
4/12 at 106.00 
Aaa 
447,717 
   
Refunding Bonds, Series 2002A-2, 6.300%, 4/01/35 – AMBAC Insured (Alternative Minimum Tax) 
     
12,500 
 
Dallas-Ft. Worth International Airport, Texas, Joint Revenue Bonds, Series 2000A, 6.125%, 
11/11 at 100.00 
A+ 
12,511,625 
   
11/01/35 – NPFG Insured (Alternative Minimum Tax) 
     
25,000 
 
Harris County-Houston Sports Authority, Texas, Junior Lien Revenue Refunding Bonds, Series 
11/11 at 100.00 
Baa1 
20,829,000 
   
2001B, 5.250%, 11/15/40 – NPFG Insured 
     
4,671 
 
Houston Housing Finance Corporation, Texas, GNMA Collateralized Mortgage Multifamily Housing 
9/11 at 105.00 
Aaa 
4,800,480 
   
Revenue Bonds, RRG Apartments Project, Series 2001, 6.350%, 3/20/42 
     
   
Houston, Texas, First Lien Combined Utility System Revenue Bonds, Series 2004A: 
     
4,000 
 
5.250%, 5/15/24 – FGIC Insured 
5/14 at 100.00 
AA 
4,340,120 
5,000 
 
5.250%, 5/15/25 – NPFG Insured 
5/14 at 100.00 
AA 
5,410,800 
17,500 
 
Houston, Texas, Hotel Occupancy Tax and Special Revenue Bonds, Convention and Entertainment 
9/11 at 100.00 
A2 
16,653,700 
   
Project, Series 2001B, 5.250%, 9/01/33 – AMBAC Insured 
     
225 
 
Houston, Texas, Subordinate Lien Airport System Revenue Bonds, Series 2000A, 5.625%, 7/01/30 – 
1/12 at 100.00 
AA+ 
225,077 
   
AGM Insured (Alternative Minimum Tax) 
     
2,960 
 
Lower Colorado River Authority, Texas, Revenue Refunding and Improvement Bonds, Series 2001A, 
10/11 at 100.00 
A1 
2,968,199 
   
5.000%, 5/15/21 – NPFG Insured 
     
   
Port of Houston Authority, Harris County, Texas, General Obligation Port Improvement Bonds, 
     
   
Series 2001B: 
     
3,205 
 
5.500%, 10/01/18 – FGIC Insured (Alternative Minimum Tax) 
10/11 at 100.00 
AAA 
3,220,160 
3,375 
 
5.500%, 10/01/19 – FGIC Insured (Alternative Minimum Tax) 
10/11 at 100.00 
AAA 
3,398,558 
7,550 
 
Waco Health Facilities Development Corporation, Texas, Hillcrest Health System Project, FHA 
8/16 at 100.00 
Baa1 
7,540,487 
   
Insured Mortgage Revenue Bonds, Series 2006A, 5.000%, 8/01/31 – NPFG Insured 
     
1,840 
 
Ysleta Independent School District Public Facility Corporation, Texas, Lease Revenue Refunding 
11/11 at 100.00 
AA– 
1,860,093 
   
Bonds, Series 2001, 5.375%, 11/15/24 – AMBAC Insured 
     
92,653 
 
Total Texas 
   
88,715,767 
   
Utah – 1.3% (0.9% of Total Investments) 
     
2,000 
 
Clearfield City, Utah, Sales Tax Revenue Bonds, Series 2003, 5.000%, 7/01/28 (Pre-refunded 
7/13 at 100.00 
AA– (4) 
2,174,160 
   
7/01/13) – FGIC Insured 
     
15,000 
 
Utah Transit Authority, Sales Tax Revenue Bonds, Series 2008A, 5.000%, 6/15/32 – AGM 
6/18 at 100.00 
AAA 
15,686,850 
   
Insured (UB) 
     
17,000 
 
Total Utah 
   
17,861,010 
   
Virginia – 1.2% (0.8% of Total Investments) 
     
1,035 
 
Loudoun County Industrial Development Authority, Virginia, Lease Revenue Bonds, Public Safety 
6/14 at 100.00 
AA+ 
1,144,151 
   
Facilities, Series 2003A, 5.250%, 12/15/20 – AGM Insured 
     
4,840 
 
Metropolitan Washington D.C. Airports Authority, Airport System Revenue Bonds, Series 2001A, 
10/11 at 101.00 
AA– 
4,920,973 
   
5.500%, 10/01/19 – NPFG Insured (Alternative Minimum Tax) 
     
1,000 
 
Roanoke Industrial Development Authority, Virginia, Hospital Revenue Bonds, Carillion Health 
7/20 at 100.00 
AA+ 
1,003,170 
   
System Obligated Group, Series 2005B, 5.000%, 7/01/38 – AGM Insured 
     
10,000 
 
Virginia Housing Development Authority, Commonwealth Mortgage Bonds, Series 2001H-1, 5.375%, 
1/12 at 100.00 
AAA 
10,005,700 
   
7/01/36 – NPFG Insured (UB) 
     
16,875 
 
Total Virginia 
   
17,073,994 
   
Washington – 4.5% (3.0% of Total Investments) 
     
2,500 
 
Grant County Public Utility District 2, Washington, Revenue Bonds, Wanapum Hydroelectric 
1/15 at 100.00 
AA– 
2,552,275 
   
Development, Series 2005A, 5.000%, 1/01/29 – FGIC Insured 
     
3,500 
 
King County School District 401, Highline, Washington, General Obligation Bonds, Series 2004, 
12/14 at 100.00 
AA+ 
3,751,300 
   
5.000%, 10/01/24 – FGIC Insured 
     
7,500 
 
King County, Washington, General Obligation Sewer Bonds, Series 2009, Trust 1W, 9.537%, 
1/19 at 100.00 
AA+ 
8,294,550 
   
1/01/39 – AGC Insured (IF), (5) 
     
17,000 
 
King County, Washington, Sewer Revenue Bonds, Series 2007, 5.000%, 1/01/42 – AGM Insured 
7/17 at 100.00 
AA+ 
17,343,909 
4,345 
 
King County, Washington, Sewer Revenue Bonds, Tender Option Bond Trust 3090, 13.461%, 
7/17 at 100.00 
AA+ 
4,629,032 
   
7/01/32 – AGM Insured (IF) 
     
4,250 
 
Snohomish County Public Utility District 1, Washington, Generation System Revenue Bonds, 
No Opt. Call 
Aaa 
5,268,044 
   
Series 1989, 6.650%, 1/01/16 – FGIC Insured (ETM) 
     
   
Tacoma, Washington, Solid Waste Utility Revenue Refunding Bonds, Series 2006: 
     
3,890 
 
5.000%, 12/01/24 – SYNCORA GTY Insured 
12/16 at 100.00 
AA 
4,111,535 
4,085 
 
5.000%, 12/01/25 – SYNCORA GTY Insured 
12/16 at 100.00 
AA 
4,294,437 
4,290 
 
5.000%, 12/01/26 – SYNCORA GTY Insured 
12/16 at 100.00 
AA 
4,491,028 
5,945 
 
Washington State, General Obligation Bonds, Series 2006, Trust 1212, 13.506%, 7/01/14 – AGM 
No Opt. Call 
AA+ 
6,738,121 
   
Insured (IF) 
     
57,305 
 
Total Washington 
   
61,474,231 
   
West Virginia – 0.7% (0.5% of Total Investments) 
     
10,000 
 
West Virginia Economic Development Authority, State Lottery Revenue Bonds, Series 2010A, 
6/20 at 100.00 
AAA 
10,081,500 
   
5.000%, 6/15/40 
     
   
Wisconsin – 2.2% (1.5% of Total Investments) 
     
15,000 
 
Wisconsin Health and Educational Facilities Authority, Revenue Bonds, Marshfield Clinic, 
8/11 at 100.00 
Baa1 
14,999,549 
   
Series 1997, 5.750%, 2/15/27 – NPFG Insured 
     
290 
 
Wisconsin State, General Obligation Bonds, Series 2004-3, 5.250%, 5/01/20 – FGIC Insured 
5/14 at 100.00 
AA 
321,160 
2,600 
 
Wisconsin State, General Obligation Bonds, Series 2004-3, 5.250%, 5/01/20 (Pre-refunded 
5/14 at 100.00 
Aa2 (4) 
2,928,743 
   
5/01/14) – FGIC Insured 
     
10,945 
 
Wisconsin State, General Obligation Bonds, Series 2004-4, 5.000%, 5/01/20 – NPFG Insured 
5/14 at 100.00 
AA 
12,034,683 
28,835 
 
Total Wisconsin 
   
30,284,135 
$ 2,203,271 
 
Total Long-Term Investments (cost $2,017,885,846) – 149.2% 
   
2,043,790,085 
   
Short-Term Investments – 0.8% (0.5% of Investments) 
     
   
Missouri – 0.6% (0.4% of Total Investments) 
     
$ 8,000 
 
St. Louis, Missouri, Airport Revenue Bonds, Lambert-St. Louis International Airport, Variable Rate 
No Opt. Call 
A–1 
8,000,000 
   
Demand Obligations Tender Option Bond Trust DCL-017, 2.660%, 7/01/22 (7) 
     
   
North Carolina – 0.2% (0.1% of Total Investments) 
     
2,500 
 
Sampson County, North Carolina, Certificates of Participation, Series 2006, Variable Rate 
No Opt. Call 
A–1 
2,500,000 
   
Demand Obligations Series 112, 0.140%, 6/01/34 (7) 
     
$ 10,500 
 
Total Short-Term Investments (cost $10,500,000) 
   
10,500,000 
   
Total Investments (cost $2,028,385,846) – 150.0% 
   
2,054,290,085 
   
Floating Rate Obligations – (8.3)% 
   
(114,193,333) 
   
Variable Rate Demand Preferred Shares, at Liquidation Value – (48.7)% (8) 
   
(667,200,000) 
   
Other Assets Less Liabilities – 7.0% 
   
96,844,056 
   
Net Assets Applicable to Common Shares – 100% 
   
$ 1,369,740,808 
 
 
 
 
 

 
 
 
Fair Value Measurements
 
Fair value is defined as the price that the Fund would receive upon selling an investment or transferring a liability in an orderly transaction to an independent buyer in the principal or most advantageous market for the investment. A three-tier hierarchy is used to maximize the use of observable market data and minimize the use of unobservable inputs and to establish classification of fair value measurements for disclosure purposes. Observable inputs reflect the assumptions market participants would use in pricing the asset or liability. Observable inputs are based on market data obtained from sources independent of the reporting entity. Unobservable inputs reflect the reporting entity’s own assumptions about the assumptions market participants would use in pricing the asset or liability. Unobservable inputs are based on the best information available in the circumstances. The three-tier hierarchy of inputs is summarized in the three broad levels listed below:
 
Level 1 – Quoted prices in active markets for identical securities.
 
Level 2 – Other significant observable inputs (including quoted prices for similar securities, interest rates, prepayment speeds, credit risk, etc.).
 
Level 3 – Significant unobservable inputs (including management’s assumptions in determining the fair value of investments).
 
The inputs or methodologies used for valuing securities are not an indication of the risk associated with investing in those securities. The following is a summary of the Fund’s fair value measurements as of July 31, 2011:
 
         
 
Level 1 
Level 2 
Level 3 
Total 
Investments: 
       
Municipal Bonds 
$ — 
$2,043,790,085 
$ — 
$2,043,790,085 
Short-Term Investments 
 
10,500,000 
 
10,500,000 
Total 
$ — 
$2,054,290,085 
$ — 
$2,054,290,085 
 
 
During the period ended July 31, 2011, the Fund recognized no significant transfers to or from Level 1, Level 2 or Level 3.
 
Income Tax Information
 
The following information is presented on an income tax basis. Differences between amounts for financial statement and federal income tax purposes are primarily due to timing differences in recognizing taxable market discount, timing differences in recognizing certain gains and losses on investment transactions and the treatment of investments in inverse floating rate securities reflected as financing transactions, if any. To the extent that differences arise that are permanent in nature, such amounts are reclassified within the capital accounts on the Statement of Assets and Liabilities presented in the annual report, based on their federal tax basis treatment; temporary differences do not require reclassification. Temporary and permanent differences do not impact the net asset value of the Fund.
 
At July 31, 2011, the cost of investments was $1,919,745,141.
 
Gross unrealized appreciation and gross unrealized depreciation of investments at July 31, 2011, were as follows:
 
   
Gross unrealized: 
 
Appreciation 
$ 81,960,112 
Depreciation 
(61,606,042)
Net unrealized appreciation (depreciation) of investments 
$ 20,354,070 
 
 
     
   
The Fund intends to invest at least 80% of its managed assets in municipal securities that are covered by 
   
insurance guaranteeing the timely payment of principal and interest. 
(1) 
 
All percentages shown in the Portfolio of Investments are based on net assets applicable to Common 
   
shares unless otherwise noted. 
(2) 
 
Optional Call Provisions: Dates (month and year) and prices of the earliest optional call or redemption. 
   
There may be other call provisions at varying prices at later dates. Certain mortgage-backed securities 
   
may be subject to periodic principal paydowns. 
(3) 
 
Ratings: Using the highest of Standard & Poor’s Group (“Standard & Poor’s”), Moody’s Investor Service, 
   
Inc. (“Moody’s”) or Fitch, Inc. (“Fitch”) rating. Ratings below BBB by Standard & Poor’s, Baa by Moody’s or 
   
BBB by Fitch are considered to be below investment grade. Holdings designated N/R are not rated by any 
   
of these national rating agencies. 
(4) 
 
Backed by an escrow or trust containing sufficient U.S. Government or U.S. Government agency securities, 
   
which ensure the timely payment of principal and interest. Such investments are normally considered to 
   
be equivalent to AAA rated securities. 
(5) 
 
Investment, or portion of investment, has been pledged to collateralize the net payment obligations for 
   
investments in inverse floating rate transactions. 
(6) 
 
At or subsequent to the end of the reporting period, this security is non-income producing. Non-income 
   
producing security, in the case of a bond, generally denotes that the issuer has (1) defaulted on the 
   
payment of principal or interest, (2) is under the protection of the Federal Bankruptcy Court or (3) the Fund’s 
   
Adviser has concluded that the issue is not likely to meet its future interest payment obligations and has 
   
directed the Fund’s custodian to cease accruing additional income on the Fund’s records. 
(7) 
 
Investment has a maturity of more than one year, but has variable rate and demand features which qualify 
   
it as a short-term investment. The rate disclosed is that in effect at the end of the reporting period. This 
   
rate changes periodically based on market conditions or a specified market index. 
(8) 
 
Variable Rate Demand Preferred Shares, at Liquidation Value as a percentage of Total Investments is 32.5%. 
N/R 
 
Not rated. 
(ETM) 
 
Escrowed to maturity. 
(IF) 
 
Inverse floating rate investment. 
(UB) 
 
Underlying bond of an inverse floating rate trust reflected as a financing transaction. 
 
 
 
 

 
Item 2. Controls and Procedures.

a.  
The registrant's principal executive and principal financial officers, or persons performing similar functions, have concluded that the registrant's disclosure controls and procedures (as defined in Rule 30a-3(c) under the Investment Company Act of 1940, as amended (the "1940 Act") (17 CFR 270.30a-3(c))) are effective, as of a date within 90 days of the filing date of this report that includes the disclosure required by this paragraph, based on their evaluation of the controls and procedures required by Rule 30a-3(b) under the 1940 Act (17 CFR 270.30a-3(b)) and Rule 13a-15(b) or 15d-15(b) under the Securities Exchange Act of 1934 (17 CFR 240.13a-15(b) or 240.15d-15(b)).
 
 
b.  
There were no changes in the registrant's internal control over financial reporting (as defined in Rule 30a-3(d) under the 1940 Act (17 CFR 270.30a-3(d)) that occurred during the registrant's last fiscal quarter that have materially affected, or are reasonably likely to materially affect, the registrant's internal control over financial reporting.
 
Item 3. Exhibits.

File as exhibits as part of this Form a separate certification for each principal executive officer and principal financial officer of the registrant as required by Rule 30a-2(a) under the 1940 Act (17 CFR 270.30a-2(a)), exactly as set forth below: See EX-99 CERT attached hereto.

 
 
 

 
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)  Nuveen Insured Municipal Opportunity Fund, Inc. 
 
By (Signature and Title)     /s/ Kevin J. McCarthy                    
                                                   Kevin J. McCarthy
                                                   Vice President and Secretary
 
Date         September 29, 2011        
 
Pursuant to the requirements of the Securities Exchange Act of 1934 and the Investment Company Act of 1940, this report has been signed below by the following persons on behalf of the registrant and in the capacities and on the dates indicated.
 
By (Signature and Title)     /s/ Gifford R. Zimmerman                    
                                                    Gifford R. Zimmerman
                                                  Chief Administrative Officer (principal executive officer) 
 
Date         September 29, 2011        
 
By (Signature and Title)     /s/ Stephen D. Foy                              
                                                   Stephen D. Foy
                                                  Vice President and Controller (principal financial officer) 
 
Date         September 29, 2011