| | | | | | | | |
Security | | Principal Amount (000’s omitted) | | | Value | |
Bond Bank — 0.7% | | | | | | | | |
Ohio Economic Development, (Ohio Enterprise Bond Fund), 6.00%, 12/1/34 | | $ | 700 | | | $ | 716,457 | |
Rickenbacker Port Authority, OH, (OASBO Expanded Asset Pooled Financing Program), 5.375%, 1/1/32 | | | 375 | | | | 492,446 | |
Texas Water Development Board, 4.00%, 10/15/37(1) | | | 4,875 | | | | 5,844,930 | |
| | | | | | | | |
| | | | | | $ | 7,053,833 | |
| | | | | | | | |
Education — 12.6% | | | | | | | | |
Connecticut Health and Educational Facilities Authority, (Fairfield University), 5.00%, 7/1/46 | | $ | 4,750 | | | $ | 5,350,495 | |
District of Columbia, (KIPP DC), 4.00%, 7/1/39 | | | 275 | | | | 291,019 | |
District of Columbia, (KIPP DC), 4.00%, 7/1/44 | | | 270 | | | | 282,377 | |
District of Columbia, (KIPP DC), 4.00%, 7/1/49 | | | 385 | | | | 400,797 | |
Houston Higher Education Finance Corp., TX, (St. John’s School), Prerefunded to 9/1/22, 5.25%, 9/1/33 | | | 4,550 | | | | 5,027,022 | |
Massachusetts Development Finance Agency, (Boston College), 5.00%, 7/1/42(1) | | | 9,525 | | | | 11,491,722 | |
Massachusetts Development Finance Agency, (Milton Academy), 5.00%, 9/1/35 | | | 750 | | | | 755,858 | |
Massachusetts Development Finance Agency, (Northeastern University), 5.25%, 3/1/37 | | | 1,650 | | | | 1,861,084 | |
Massachusetts Development Finance Agency, (Williams College), 5.00%, 7/1/46(1) | | | 7,050 | | | | 8,546,221 | |
Massachusetts Health and Educational Facilities Authority, (Boston College), 5.50%, 6/1/27 | | | 5,710 | | | | 7,483,183 | |
Massachusetts Health and Educational Facilities Authority, (Boston College), 5.50%, 6/1/30 | | | 8,325 | | | | 11,589,732 | |
Massachusetts Health and Educational Facilities Authority, (Northeastern University), 5.00%, 10/1/35 | | | 870 | | | | 880,249 | |
New Jersey Educational Facilities Authority, (Princeton University), 4.00%, 7/1/47(1) | | | 10,000 | | | | 11,547,000 | |
New Jersey Educational Facilities Authority, (Princeton University), 5.00%, 7/1/29(1) | | | 1,675 | | | | 2,162,894 | |
New Jersey Educational Facilities Authority, (Princeton University), 5.00%, 7/1/31(1) | | | 1,125 | | | | 1,438,313 | |
New York Dormitory Authority, (Columbia University), 5.00%, 10/1/38(1) | | | 8,500 | | | | 10,724,195 | |
North Carolina Capital Facilities Finance Agency, (Duke University), Prerefunded to 10/1/25, 5.00%, 10/1/41(1) | | | 10,000 | | | | 12,362,700 | |
Ohio Higher Educational Facility Commission, (Oberlin College), 5.00%, 10/1/33 | | | 500 | | | | 550,990 | |
Pennsylvania Higher Educational Facilities Authority, (Saint Joseph’s University), 5.00%, 11/1/40 | | | 440 | | | | 446,780 | |
Pennsylvania State University, 5.00%, 9/1/42(1) | | | 3,750 | | | | 4,579,575 | |
State Public School Building Authority, PA, (Northampton County Area Community College), 5.50%, 3/1/31 | | | 750 | | | | 771,555 | |
Swarthmore Borough Authority, PA, (Swarthmore College), 5.00%, 9/15/46(1) | | | 3,000 | | | | 3,774,840 | |
University of Cincinnati, OH, 5.00%, 6/1/45(1) | | | 7,500 | | | | 8,969,100 | |
University of Michigan, 5.00%, 4/1/40(1) | | | 15,000 | | | | 17,950,350 | |
University of Michigan, 5.00%, 4/1/48(1) | | | 3,500 | | | | 4,339,790 | |
| | | | | | | | |
| | | | | | $ | 133,577,841 | |
| | | | | | | | |
Electric Utilities — 7.0% | | | | | | | | |
Energy Northwest, WA, (Columbia Generating Station), 5.00%, 7/1/40 | | $ | 2,650 | | | $ | 3,019,913 | |
Los Angeles Department of Water and Power, CA, Power System Revenue, 4.00%, 7/1/46(1) | | | 3,000 | | | | 3,328,650 | |
Michigan Public Power Agency, 5.00%, 1/1/43 | | | 700 | | | | 735,000 | |
New York Power Authority, 4.00%, 11/15/50(1) | | | 12,500 | | | | 14,709,375 | |
| | | | | | | | |
Security | | Principal Amount (000’s omitted) | | | Value | |
Ohio Air Quality Development Authority, (Buckeye Power, Inc.), 6.00%, 12/1/40 | | $ | 500 | | | $ | 511,415 | |
Omaha Public Power District, NE, 5.00%, 2/1/40(1) | | | 16,000 | | | | 18,443,200 | |
Omaha Public Power District, NE, 5.00%, 2/1/42(1) | | | 10,000 | | | | 12,400,000 | |
Pima County Industrial Development Authority, AZ, (Tucson Electric Power Co.), 5.25%, 10/1/40 | | | 11,300 | | | | 11,389,835 | |
Unified Government of Wyandotte County/Kansas City Board of Public Utilities, KS, 5.00%, 9/1/36 | | | 4,110 | | | | 4,301,362 | |
Utility Debt Securitization Authority, NY, 5.00%, 12/15/35 | | | 5,000 | | | | 5,684,050 | |
| | | | | | | | |
| | | | | | $ | 74,522,800 | |
| | | | | | | | |
Escrowed/Prerefunded — 15.2% | | | | | | | | |
California Department of Water Resources, Prerefunded to 12/1/20, 5.25%, 12/1/35(1) | | $ | 9,715 | | | $ | 9,918,238 | |
Connecticut Health and Educational Facilities Authority, (Wesleyan University), Prerefunded to 7/1/20, 5.00%, 7/1/39(1) | | | 16,900 | | | | 16,900,000 | |
Detroit, MI, Sewage Disposal System, Prerefunded to 7/1/22, 5.00%, 7/1/32 | | | 2,625 | | | | 2,869,388 | |
Detroit, MI, Sewage Disposal System, Prerefunded to 7/1/22, 5.25%, 7/1/39 | | | 2,345 | | | | 2,574,974 | |
Detroit, MI, Water Supply System, Prerefunded to 7/1/21, 5.25%, 7/1/41 | | | 3,210 | | | | 3,370,083 | |
Honolulu City and County, HI, Wastewater System, Prerefunded to 7/1/21, 5.25%, 7/1/36(1) | | | 9,750 | | | | 10,236,232 | |
Kent Hospital Finance Authority, MI, (Spectrum Health System), Prerefunded to 1/15/22, 5.00%, 1/15/31 | | | 750 | | | | 804,705 | |
King County, WA, Sewer Revenue, Prerefunded to 1/1/21, 5.00%, 1/1/34(1) | | | 6,000 | | | | 6,140,640 | |
King County, WA, Sewer Revenue, Prerefunded to 1/1/21, 5.00%, 1/1/34(1) | | | 4,000 | | | | 4,095,760 | |
Maryland Health and Higher Educational Facilities Authority, (Charlestown Community, Inc.), Prerefunded to 1/1/21, 6.125%, 1/1/30 | | | 1,410 | | | | 1,449,339 | |
Mississippi, Prerefunded to 10/1/21, 5.00%, 10/1/30(1) | | | 10,000 | | | | 10,585,900 | |
Mississippi, Prerefunded to 10/1/21, 5.00%, 10/1/36(1) | | | 13,800 | | | | 14,608,542 | |
New York Dormitory Authority, Sales Tax Revenue, Prerefunded to 3/15/23, 5.00%, 3/15/34 | | | 3,750 | | | | 4,227,337 | |
New York Dormitory Authority, Sales Tax Revenue, Prerefunded to 3/15/23, 5.00%, 3/15/35 | | | 13,750 | | | | 15,500,237 | |
New York, Prerefunded to 2/15/21, 5.00%, 2/15/34(1) | | | 2,750 | | | | 2,832,198 | |
North Carolina, Limited Obligation Bonds, Prerefunded to 5/1/21, 5.00%, 5/1/30(1) | | | 10,000 | | | | 10,392,100 | |
Pennsylvania Turnpike Commission, Prerefunded to 12/1/20, 6.00%, 12/1/34 | | | 3,520 | | | | 3,602,931 | |
Pennsylvania Turnpike Commission, Prerefunded to 12/1/20, 6.00%, 12/1/34 | | | 760 | | | | 777,906 | |
Southcentral Pennsylvania General Authority, (York College of Pennsylvania), Prerefunded to 5/1/21, 5.50%, 11/1/31 | | | 1,500 | | | | 1,561,815 | |
University of Colorado, (University Enterprise Revenue), Prerefunded to 6/1/21, 5.25%, 6/1/36(1) | | | 10,000 | | | | 10,458,000 | |
University of Massachusetts Building Authority, Prerefunded to 11/1/22, 5.00%, 11/1/39(1) | | | 14,175 | | | | 15,693,001 | |
Wisconsin Health and Educational Facilities Authority, (Ascension Health Alliance Senior Credit Group), Prerefunded to 11/15/21, 5.00%, 11/15/41(1) | | | 11,500 | | | | 12,231,515 | |
| | | | | | | | |
| | | | | | $ | 160,830,841 | |
| | | | | | | | |
General Obligations — 31.5% | | | | | | | | |
Allegheny County, PA, 5.00%, 11/1/43(1) | | $ | 3,800 | | | $ | 4,726,592 | |
Boston, MA, 5.00%, 5/1/38(1) | | | 2,000 | | | | 2,533,020 | |
California, 5.00%, 10/1/33(1) | | | 18,800 | | | | 21,909,520 | |
California, 5.00%, 8/1/46(1) | | | 15,000 | | | | 17,931,150 | |
Chicago Park District, IL, (Harbor Facilities), 5.25%, 1/1/37(1) | | | 10,000 | | | | 10,110,700 | |
Chicago, IL, 5.00%, 1/1/44 | | | 19,880 | | | | 21,266,034 | |
Cleveland, OH, 5.00%, 12/1/43(1) | | | 2,225 | | | | 2,741,778 | |
Delaware Valley Regional Finance Authority, PA, 5.75%, 7/1/32 | | | 6,500 | | | | 9,229,415 | |
District of Columbia, 5.00%, 6/1/43(1) | | | 12,000 | | | | 15,015,000 | |
Forest Hills Local School District, OH, 5.00%, 12/1/46(1) | | | 2,225 | | | | 2,594,995 | |
Humble Independent School District, TX, (PSF Guaranteed), 5.00%, 2/15/43(1) | | | 20,000 | | | | 24,186,800 | |
Illinois, 4.00%, 11/1/38 | | | 13,000 | | | | 12,733,370 | |
Illinois, 4.00%, 11/1/40 | | | 2,000 | | | | 1,955,900 | |
| | | | | | | | |
Security | | Principal Amount (000’s omitted) | | | Value | |
Illinois, 5.50%, 5/1/39 | | $ | 810 | | | $ | 912,821 | |
Illinois, 5.75%, 5/1/45 | | | 830 | | | | 944,880 | |
Jackson Public Schools, MI, 5.00%, 5/1/48(1) | | | 2,150 | | | | 2,612,766 | |
Klein Independent School District, TX, (PSF Guaranteed), 5.00%, 2/1/36(1) | | | 2,000 | | | | 2,051,260 | |
Massachusetts, 5.00%, 9/1/38(1) | | | 18,500 | | | | 23,542,545 | |
Monmouth County Improvement Authority, NJ, 5.00%, 1/15/27 | | | 260 | | | | 266,456 | |
Morgan Hill Unified School District, CA, (Election of 2012), 4.00%, 8/1/47(1) | | | 10,000 | | | | 11,207,900 | |
New York, NY, 5.00%, 10/1/32 | | | 10,000 | | | | 10,874,100 | |
Ohio, 5.00%, 2/1/37(1) | | | 2,225 | | | | 2,668,532 | |
Oregon, Prerefunded to 8/1/21, 5.00%, 8/1/35(1) | | | 6,750 | | | | 7,056,517 | |
Oregon, Prerefunded to 8/2/21, 5.00%, 8/1/36 | | | 1,290 | | | | 1,347,005 | |
Pennsylvania, 4.00%, 4/1/29(1) | | | 3,000 | | | | 3,239,250 | |
Pennsylvania, 5.00%, 3/1/32(1) | | | 2,750 | | | | 3,491,757 | |
Peters Township School District, PA, 5.00%, 9/1/40(1) | | | 3,225 | | | | 4,038,990 | |
Port of Houston Authority of Harris County, TX, 5.00%, 10/1/35 | | | 7,500 | | | | 7,570,950 | |
Shoreline School District No. 412, WA, 4.00%, 6/1/38(1) | | | 2,800 | | | | 3,303,244 | |
State College Area School District, PA, 5.00%, 5/15/44(1) | | | 3,650 | | | | 4,548,922 | |
Tacoma School District No. 10, WA, Prerefunded to 12/1/25, 5.00%, 12/1/39(1) | | | 10,000 | | | | 11,884,600 | |
Trenton Public Schools, MI, 5.00%, 5/1/42(1) | | | 2,150 | | | | 2,628,096 | |
Upper Arlington City School District, OH, 5.00%, 12/1/48(1) | | | 2,225 | | | | 2,730,053 | |
Walled Lake Consolidated School District, MI, 5.00%, 5/1/34 | | | 635 | | | | 725,367 | |
Washington, 4.00%, 7/1/28(1) | | | 10,000 | | | | 10,631,200 | |
Washington, 5.00%, 2/1/35(1) | | | 23,500 | | | | 26,777,780 | |
Washington, 5.00%, 2/1/38(1) | | | 10,000 | | | | 12,551,700 | |
Washington, 5.00%, 6/1/38(2) | | | 1,540 | | | | 1,988,479 | |
Washington, 5.00%, 6/1/40(2) | | | 2,500 | | | | 3,210,625 | |
Wayland, MA, 5.00%, 2/1/33 | | | 340 | | | | 348,354 | |
Wayland, MA, 5.00%, 2/1/36 | | | 510 | | | | 522,016 | |
Will County, IL, 5.00%, 11/15/45(1) | | | 19,725 | | | | 23,069,374 | |
Winchester, MA, 5.00%, 4/15/36 | | | 160 | | | | 165,086 | |
| | | | | | | | |
| | | | | | $ | 333,844,899 | |
| | | | | | | | |
Hospital — 11.8% | | | | | | | | |
Allen County, OH, (Mercy Health), 4.00%, 8/1/47(1) | | $ | 900 | | | $ | 991,287 | |
California Health Facilities Financing Authority, (Catholic Healthcare West), 5.25%, 3/1/27 | | | 1,000 | | | | 1,022,890 | |
California Health Facilities Financing Authority, (Catholic Healthcare West), 5.25%, 3/1/28 | | | 1,770 | | | | 1,810,055 | |
California Health Facilities Financing Authority, (City of Hope), 4.00%, 11/15/45(1) | | | 5,200 | | | | 5,836,792 | |
Camden County Improvement Authority, NJ, (Cooper Health System), 5.75%, 2/15/42 | | | 250 | | | | 268,163 | |
Chester County Health and Education Facilities Authority, PA, (Main Line Health System), 4.00%, 9/1/50 | | | 11,625 | | | | 13,244,130 | |
Franklin County, OH, (Trinity Health Credit Group), 5.00%, 12/1/47(1) | | | 2,200 | | | | 2,618,022 | |
Grand Traverse Hospital Finance Authority, MI, (Munson Healthcare Obligated Group), 5.375%, 7/1/35 | | | 750 | | | | 775,912 | |
Hamilton County, OH, (Cincinnati Children’s Hospital Medical Center), 5.00%, 5/15/34 | | | 250 | | | | 281,475 | |
Hamilton County, OH, (UC Health), 4.00%, 9/15/50 | | | 3,335 | | | | 3,598,031 | |
Hawaii Department of Budget and Finance, (Hawaii Pacific Health), 5.50%, 7/1/38 | | | 3,150 | | | | 3,469,032 | |
Martin County Health Facilities Authority, FL, (Cleveland Clinic Health System), 4.00%, 1/1/46(1) | | | 10,000 | | | | 11,178,000 | |
Maryland Health and Higher Educational Facilities Authority, (Frederick Health System), 4.00%, 7/1/45 | | | 250 | | | | 275,115 | |
Massachusetts Development Finance Agency, (Partners HealthCare System), 5.00%, 7/1/41(1) | | | 10,000 | | | | 11,630,700 | |
Massachusetts Development Finance Agency, (Partners HealthCare System), 5.00%, 7/1/47(1) | | | 2,375 | | | | 2,742,389 | |
| | | | | | | | |
Security | | Principal Amount (000’s omitted) | | | Value | |
Massachusetts Health and Educational Facilities Authority, (Southcoast Health System), 5.00%, 7/1/29 | | $ | 1,000 | | | $ | 1,002,610 | |
Michigan Finance Authority, (Trinity Health Credit Group), 5.00%, 12/1/42(1) | | | 7,300 | | | | 8,744,816 | |
Middleburg Heights, OH, (Southwest General Health Center), 5.25%, 8/1/36 | | | 500 | | | | 517,700 | |
Middleburg Heights, OH, (Southwest General Health Center), 5.25%, 8/1/41 | | | 755 | | | | 780,141 | |
Monroeville Finance Authority, PA, (UPMC Obligated Group), 5.00%, 2/15/42 | | | 500 | | | | 529,030 | |
New Jersey Health Care Facilities Financing Authority, (Palisades Medical Center), Prerefunded to 7/1/23, 5.25%, 7/1/31 | | | 135 | | | | 153,187 | |
New Jersey Health Care Facilities Financing Authority, (Princeton HealthCare System), 5.00%, 7/1/39(1) | | | 1,750 | | | | 2,048,760 | |
New Jersey Health Care Facilities Financing Authority, (Robert Wood Johnson University Hospital), 5.25%, 7/1/35 | | | 5,000 | | | | 5,491,550 | |
Northampton County General Purpose Authority, PA, (Saint Luke’s Hospital), 5.50%, 8/15/33 | | | 250 | | | | 250,978 | |
Ohio Higher Educational Facility Commission, (Summa Health System), 5.75%, 11/15/40 | | | 170 | | | | 170,624 | |
Ohio Higher Educational Facility Commission, (University Hospitals Health System, Inc.), 5.00%, 1/15/27 | | | 565 | | | | 616,500 | |
Ohio Higher Educational Facility Commission, (University Hospitals Health System, Inc.), 5.00%, 1/15/29 | | | 165 | | | | 179,518 | |
Pennsylvania Higher Educational Facilities Authority, (University of Pennsylvania Health System), 4.00%, 8/15/42(1) | | | 1,600 | | | | 1,771,584 | |
Pennsylvania Higher Educational Facilities Authority, (UPMC Health System), 5.00%, 5/15/31 | | | 490 | | | | 491,338 | |
Royal Oak Hospital Finance Authority, MI, (William Beaumont Hospital), 5.00%, 9/1/39 | | | 1,000 | | | | 1,103,820 | |
Tampa, FL, (BayCare Health System), 4.00%, 11/15/46(1) | | | 3,000 | | | | 3,262,080 | |
Tampa, FL, (BayCare Health System), 5.00%, 11/15/46(1) | | | 12,000 | | | | 13,958,640 | |
Tarrant County Cultural Education Facilities Finance Corp., TX, (Baylor Scott & White Health), 5.00%, 11/15/45(1) | | | 12,900 | | | | 14,753,085 | |
Vermont Educational and Health Buildings Financing Agency, (University of Vermont Medical Center), 5.00%, 12/1/33 | | | 1,600 | | | | 1,839,280 | |
West Virginia Hospital Finance Authority, (West Virginia United Health System Obligated Group), 5.375%, 6/1/38 | | | 7,605 | | | | 8,316,904 | |
| | | | | | | | |
| | | | | | $ | 125,724,138 | |
| | | | | | | | |
Housing — 0.1% | | | | | | | | |
East Hempfield Township Industrial Development Authority, PA, (Student Services, Inc.), 5.00%, 7/1/39 | | $ | 175 | | | $ | 175,376 | |
Seattle Housing Authority, WA, 3.625%, 12/1/43 | | | 1,000 | | | | 1,076,850 | |
| | | | | | | | |
| | | | | | $ | 1,252,226 | |
| | | | | | | | |
Industrial Development Revenue — 0.5% | | | | | | | | |
Maricopa County Pollution Control Corp., AZ, (El Paso Electric Co.), 4.50%, 8/1/42 | | $ | 4,840 | | | $ | 4,988,878 | |
| | | | | | | | |
| | | | | | $ | 4,988,878 | |
| | | | | | | | |
Insured-Bond Bank — 0.1% | | | | | | | | |
Puerto Rico Municipal Finance Agency, (AGM), 5.00%, 8/1/27 | | $ | 700 | | | $ | 704,963 | |
| | | | | | | | |
| | | | | | $ | 704,963 | |
| | | | | | | | |
Insured-Education — 2.5% | | | | | | | | |
Massachusetts College Building Authority, (AGC), 5.50%, 5/1/39 | | $ | 700 | | | $ | 1,065,834 | |
Massachusetts Development Finance Agency, (Boston University), (AGC), 6.00%, 5/15/59 | | | 1,105 | | | | 1,483,683 | |
Massachusetts Development Finance Agency, (College of the Holy Cross), (AMBAC), 5.25%, 9/1/32(1) | | | 750 | | | | 1,079,348 | |
Massachusetts Development Finance Agency, (College of the Holy Cross), (AMBAC), 5.25%, 9/1/32 | | | 15,900 | | | | 22,882,167 | |
| | | | | | | | |
| | | | | | $ | 26,511,032 | |
| | | | | | | | |
| | | | | | | | |
Security | | Principal Amount (000’s omitted) | | | Value | |
Insured-Electric Utilities — 2.3% | | | | | | | | |
Chelan County Public Utility District No. 1, WA, (Columbia River), (NPFG), 0.00%, 6/1/23 | | $ | 6,335 | | | $ | 6,194,680 | |
Cleveland, OH, Public Power System Revenue, (NPFG), 0.00%, 11/15/27 | | | 2,750 | | | | 2,460,012 | |
Cleveland, OH, Public Power System Revenue, (NPFG), 0.00%, 11/15/38 | | | 1,000 | | | | 614,530 | |
Louisiana Energy and Power Authority, (AGM), 5.25%, 6/1/38 | | | 5,640 | | | | 6,292,379 | |
Ohio Municipal Electric Generation Agency, (NPFG), 0.00%, 2/15/27 | | | 5,000 | | | | 4,580,000 | |
Puerto Rico Electric Power Authority, (NPFG), 5.25%, 7/1/23 | | | 1,095 | | | | 1,121,488 | |
Puerto Rico Electric Power Authority, (NPFG), 5.25%, 7/1/26 | | | 1,530 | | | | 1,574,064 | |
Puerto Rico Electric Power Authority, (NPFG), 5.25%, 7/1/34 | | | 490 | | | | 501,437 | |
Puerto Rico Electric Power Authority, (NPFG), 5.25%, 7/1/35 | | | 1,085 | | | | 1,110,530 | |
| | | | | | | | |
| | | | | | $ | 24,449,120 | |
| | | | | | | | |
Insured-Escrowed/Prerefunded — 1.7% | | | | | | | | |
Bay City Brownfield Redevelopment Authority, MI, (BAM), Prerefunded to 10/1/23, 5.375%, 10/1/38 | | $ | 500 | | | $ | 581,050 | |
Kane, Cook and DuPage Counties School District No. 46, IL, (AMBAC), Escrowed to Maturity, 0.00%, 1/1/22 | | | 13,145 | | | | 13,060,741 | |
Massachusetts College Building Authority, (NPFG), Escrowed to Maturity, 0.00%, 5/1/26 | | | 1,600 | | | | 1,533,440 | |
Michigan House of Representatives, (AMBAC), Escrowed to Maturity, 0.00%, 8/15/23 | | | 2,615 | | | | 2,568,191 | |
| | | | | | | | |
| | | | | | $ | 17,743,422 | |
| | | | | | | | |
Insured-General Obligations — 8.3% | | | | | | | | |
Chicago Park District, IL, (BAM), 5.00%, 1/1/39(1) | | $ | 13,600 | | | $ | 14,793,672 | |
Cincinnati City School District, OH, (AGM), (FGIC), 5.25%, 12/1/30 | | | 4,500 | | | | 6,349,725 | |
Clark County, NV, (AMBAC), 2.50%, 11/1/36 | | | 11,845 | | | | 11,857,200 | |
Erie School District, PA, (AMBAC), 0.00%, 9/1/30 | | | 1,000 | | | | 802,370 | |
Frisco Independent School District, TX, (PSF Guaranteed), (AGM), 2.75%, 8/15/39 | | | 9,530 | | | | 9,535,909 | |
Irvington Township, NJ, (AGM), 0.00%, 7/15/26 | | | 4,165 | | | | 3,837,339 | |
Kane, Cook and DuPage Counties School District No. 46, IL, (AMBAC), 0.00%, 1/1/22 | | | 16,605 | | | | 16,457,548 | |
Livonia Public Schools, MI, (AGM), 5.00%, 5/1/43 | | | 750 | | | | 824,513 | |
Massachusetts, (AMBAC), 5.50%, 8/1/30 | | | 1,900 | | | | 2,667,562 | |
McKeesport School District, PA, (NPFG), 0.00%, 10/1/21 | | | 2,555 | | | | 2,530,523 | |
Nassau County, NY, (AGM), 5.00%, 4/1/49(1) | | | 11,600 | | | | 14,190,976 | |
Plain School District, OH, (NPFG), 0.00%, 12/1/27 | | | 2,400 | | | | 2,143,248 | |
Shaler Area School District, PA, (XLCA), 0.00%, 9/1/33 | | | 2,550 | | | | 1,931,166 | |
Westland Tax Increment Finance Authority, MI, (BAM), 5.25%, 4/1/34 | | | 500 | | | | 561,155 | |
| | | | | | | | |
| | | | | | $ | 88,482,906 | |
| | | | | | | | |
Insured-Hospital — 0.0%(3) | | | | | | | | |
Allegheny County Hospital Development Authority, PA, (UPMC Health System), (NPFG), 6.00%, 7/1/24 | | $ | 250 | | | $ | 297,805 | |
| | | | | | | | |
| | | | | | $ | 297,805 | |
| | | | | | | | |
Insured-Lease Revenue/Certificates of Participation — 0.3% | | | | | | | | |
Essex County Improvement Authority, NJ, (NPFG), 5.50%, 10/1/30 | | $ | 2,000 | | | $ | 2,895,000 | |
New Jersey Economic Development Authority, (School Facilities Construction), (NPFG), 5.50%, 9/1/28 | | | 500 | | | | 598,885 | |
| | | | | | | | |
| | | | | | $ | 3,493,885 | |
| | | | | | | | |
Insured-Other Revenue — 1.8% | | | | | | | | |
Harris County-Houston Sports Authority, TX, (AGM), (NPFG), 0.00%, 11/15/34 | | $ | 19,335 | | | $ | 11,152,235 | |
| | | | | | | | |
Security | | Principal Amount (000’s omitted) | | | Value | |
New York City Industrial Development Agency, NY, (Yankee Stadium), (AGC), 7.00%, 3/1/49 | | $ | 7,750 | | | $ | 7,789,602 | |
| | | | | | | | |
| | | | | | $ | 18,941,837 | |
| | | | | | | | |
Insured-Special Tax Revenue — 7.3% | | | | | | | | |
Alabama Public School and College Authority, (AGM), 2.50%, 12/1/27 | | $ | 15,975 | | | $ | 15,995,128 | |
Garden State Preservation Trust, NJ, (AGM), 0.00%, 11/1/21 | | | 1,000 | | | | 978,580 | |
Hamilton County, OH, Sales Tax Revenue, (AMBAC), 0.00%, 12/1/23 | | | 1,245 | | | | 1,195,636 | |
Hamilton County, OH, Sales Tax Revenue, (AMBAC), 0.00%, 12/1/24 | | | 3,665 | | | | 3,455,619 | |
Houston, TX, Hotel Occupancy Tax Revenue, (AMBAC), 0.00%, 9/1/24 | | | 18,035 | | | | 17,029,008 | |
Massachusetts, Dedicated Tax Revenue, (NPFG), 5.50%, 1/1/29 | | | 750 | | | | 971,820 | |
Miami-Dade County, FL, Professional Sports Franchise Facilities, (AGC), 7.00%, 10/1/39 | | | 18,000 | | | | 26,291,700 | |
New Jersey Economic Development Authority, (Motor Vehicle Surcharges), (XLCA), 0.00%, 7/1/26 | | | 420 | | | | 383,107 | |
New Jersey Economic Development Authority, (Motor Vehicle Surcharges), (XLCA), 0.00%, 7/1/27 | | | 1,120 | | | | 996,968 | |
Pennsylvania Turnpike Commission, (AGM), 5.25%, 7/15/30 | | | 1,105 | | | | 1,528,491 | |
Pennsylvania Turnpike Commission, (AGM), Escrowed to Maturity, 5.25%, 7/15/30 | | | 1,435 | | | | 2,024,340 | |
Reno, NV, Capital Improvement Revenue, (AGM), 4.00%, 6/1/43 | | | 6,000 | | | | 6,662,160 | |
| | | | | | | | |
| | | | | | $ | 77,512,557 | |
| | | | | | | | |
Insured-Transportation — 8.3% | | | | | | | | |
Chicago, IL, (O’Hare International Airport), (AGM), 5.00%, 1/1/28 | | $ | 2,500 | | | $ | 2,726,350 | |
Chicago, IL, (O’Hare International Airport), (AGM), 5.00%, 1/1/29 | | | 1,260 | | | | 1,372,127 | |
Chicago, IL, (O’Hare International Airport), (AGM), 5.125%, 1/1/30 | | | 2,200 | | | | 2,398,528 | |
Chicago, IL, (O’Hare International Airport), (AGM), 5.125%, 1/1/31 | | | 1,750 | | | | 1,903,860 | |
Chicago, IL, (O’Hare International Airport), (AGM), 5.25%, 1/1/32 | | | 1,115 | | | | 1,213,856 | |
Chicago, IL, (O’Hare International Airport), (AGM), 5.25%, 1/1/33 | | | 1,150 | | | | 1,249,303 | |
E-470 Public Highway Authority, CO, (NPFG), 0.00%, 9/1/21 | | | 10,200 | | | | 10,132,680 | |
E-470 Public Highway Authority, CO, (NPFG), 0.00%, 9/1/22 | | | 7,800 | | | | 7,678,008 | |
E-470 Public Highway Authority, CO, (NPFG), 0.00%, 9/1/39 | | | 25,000 | | | | 11,645,250 | |
Metropolitan Transportation Authority, NY, Green Bonds, (AGM), 4.00%, 11/15/46 | | | 5,770 | | | | 6,287,742 | |
New Jersey Turnpike Authority, (AGM), (BHAC), 5.25%, 1/1/29 | | | 1,000 | | | | 1,327,140 | |
Port Palm Beach District, FL, (XLCA), 0.00%, 9/1/24 | | | 1,605 | | | | 1,378,149 | |
Port Palm Beach District, FL, (XLCA), 0.00%, 9/1/25 | | | 1,950 | | | | 1,602,744 | |
Port Palm Beach District, FL, (XLCA), 0.00%, 9/1/26 | | | 1,000 | | | | 784,230 | |
Puerto Rico Highway and Transportation Authority, (AGC), 5.25%, 7/1/41 | | | 2,100 | | | | 2,280,495 | |
Puerto Rico Highway and Transportation Authority, (AGM), 5.00%, 7/1/32 | | | 475 | | | | 478,002 | |
San Joaquin Hills Transportation Corridor Agency, CA, (NPFG), 0.00%, 1/15/25 | | | 26,215 | | | | 23,401,082 | |
Texas Transportation Commission, (Central Texas Turnpike System), (AMBAC), 0.00%, 8/15/20 | | | 10,275 | | | | 10,264,828 | |
| | | | | | | | |
| | | | | | $ | 88,124,374 | |
| | | | | | | | |
Insured-Water and Sewer — 4.5% | | | | | | | | |
Chicago, IL, Wastewater Transmission Revenue, (NPFG), 0.00%, 1/1/23 | | $ | 13,670 | | | $ | 12,910,085 | |
DeKalb County, GA, Water and Sewerage Revenue, (AGM), 5.25%, 10/1/32(1) | | | 10,000 | | | | 12,359,100 | |
Erie Sewer Authority, PA, (AMBAC), 0.00%, 12/1/26 | | | 1,920 | | | | 1,701,485 | |
Massachusetts Water Resources Authority, (AGM), 5.25%, 8/1/35 | | | 1,000 | | | | 1,513,580 | |
Massachusetts Water Resources Authority, (AGM), 5.25%, 8/1/38 | | | 1,070 | | | | 1,668,997 | |
Michigan Finance Authority, (Detroit Water and Sewerage Department), (AGM), 5.00%, 7/1/31 | | | 1,500 | | | | 1,713,150 | |
Michigan Finance Authority, (Detroit Water and Sewerage Department), (AGM), 5.00%, 7/1/32 | | | 2,845 | | | | 3,237,382 | |
Michigan Finance Authority, (Detroit Water and Sewerage Department), (AGM), 5.00%, 7/1/33 | | | 2,435 | | | | 2,756,639 | |
Michigan Finance Authority, (Detroit Water and Sewerage Department), (AGM), 5.00%, 7/1/35 | | | 2,970 | | | | 3,345,081 | |
Michigan Finance Authority, (Detroit Water and Sewerage Department), (AGM), 5.00%, 7/1/37 | | | 2,435 | | | | 2,731,486 | |
Middlesex County Improvement Authority, NJ, (Perth Amboy), (AMBAC), 0.00%, 9/1/24 | | | 2,150 | | | | 2,057,141 | |
| | | | | | | | |
Security | | Principal Amount (000’s omitted) | | | Value | |
Passaic Valley Sewerage Commissioners, NJ, (NPFG), 2.50%, 12/1/32 | | $ | 635 | | | $ | 635,318 | |
Puerto Rico Aqueduct and Sewer Authority, (AGC), 5.00%, 7/1/28 | | | 890 | | | | 895,945 | |
| | | | | | | | |
| | | | | | $ | 47,525,389 | |
| | | | | | | | |
Lease Revenue/Certificates of Participation — 2.8% | | | | | | | | |
Hudson Yards Infrastructure Corp., NY, 5.75%, 2/15/47 | | $ | 755 | | | $ | 778,375 | |
Hudson Yards Infrastructure Corp., NY, Prerefunded to 2/15/21, 5.75%, 2/15/47 | | | 1,225 | | | | 1,266,907 | |
Michigan State Building Authority, 5.00%, 10/15/51(1) | | | 2,200 | | | | 2,622,004 | |
North Carolina, Limited Obligation Bonds, 5.00%, 5/1/26(1) | | | 21,250 | | | | 24,699,300 | |
| | | | | | | | |
| | | | | | $ | 29,366,586 | |
| | | | | | | | |
Other Revenue — 1.4% | | | | | | | | |
New York City Transitional Finance Authority, NY, (Building Aid), 5.00%, 7/15/36(1) | | $ | 10,750 | | | $ | 11,144,310 | |
Oregon Department of Administrative Services, Lottery Revenue, 5.25%, 4/1/30 | | | 1,455 | | | | 1,503,117 | |
Texas Municipal Gas Acquisition and Supply Corp. III, Gas Supply Revenue, 5.00%, 12/15/30 | | | 1,960 | | | | 2,088,301 | |
| | | | | | | | |
| | | | | | $ | 14,735,728 | |
| | | | | | | | |
Senior Living/Life Care — 0.7% | | | | | | | | |
Clackamas County Hospital Facility Authority, OR, (Rose Villa), 5.125%, 11/15/40 | | $ | 240 | | | $ | 245,227 | |
Clackamas County Hospital Facility Authority, OR, (Rose Villa), 5.25%, 11/15/50 | | | 160 | | | | 162,037 | |
Franklin County, OH, (Friendship Village of Dublin), 5.00%, 11/15/44 | | | 525 | | | | 540,199 | |
Iowa Finance Authority, (Lifespace Communities, Inc.), 5.00%, 5/15/55 | | | 2,265 | | | | 2,264,864 | |
Massachusetts Development Finance Agency, (NewBridge on the Charles, Inc.), 5.00%, 10/1/57(4) | | | 310 | | | | 315,255 | |
New Jersey Economic Development Authority, (United Methodist Homes of New Jersey), 5.00%, 7/1/34 | | | 675 | | | | 675,553 | |
Palm Beach County Health Facilities Authority, FL, (Lifespace Communities, Inc.), 5.00%, 5/15/53 | | | 2,690 | | | | 2,693,820 | |
Warren County, OH, (Otterbein Homes Obligated Group), 5.75%, 7/1/33 | | | 220 | | | | 238,997 | |
| | | | | | | | |
| | | | | | $ | 7,135,952 | |
| | | | | | | | |
Special Tax Revenue — 18.9% | | | | | | | | |
Allegheny County Port Authority, PA, 5.75%, 3/1/29 | | $ | 1,500 | | | $ | 1,550,685 | |
Central Puget Sound Regional Transit Authority, WA, Sales and Use Tax Revenue, Green Bonds, 5.00%, 11/1/30(1) | | | 14,425 | | | | 17,475,310 | |
Central Puget Sound Regional Transit Authority, WA, Sales Tax and Motor Vehicle Excise Tax Revenue, Green Bonds, 5.00%, 11/1/41(1) | | | 10,000 | | | | 12,155,900 | |
Cleveland, OH, Income Tax Revenue, 5.00%, 10/1/39(1) | | | 450 | | | | 546,557 | |
Cleveland, OH, Income Tax Revenue, 5.00%, 10/1/43(1) | | | 1,800 | | | | 2,167,452 | |
Connecticut, Special Tax Obligation, (Transportation Infrastructure), 5.00%, 1/1/31(1) | | | 20,000 | | | | 21,956,000 | |
Denver City and County, CO, Dedicated Tax Revenue, 5.00%, 8/1/41(1) | | | 10,000 | | | | 11,888,600 | |
Franklin County, OH, Sales Tax Revenue, 5.00%, 6/1/38(1) | | | 1,100 | | | | 1,391,104 | |
Franklin County, OH, Sales Tax Revenue, 5.00%, 6/1/43(1) | | | 1,100 | | | | 1,375,440 | |
Massachusetts Bay Transportation Authority, Sales Tax Revenue, 5.25%, 7/1/33 | | | 750 | | | | 1,039,680 | |
Massachusetts School Building Authority, Sales Tax Revenue, 5.00%, 8/15/37(1) | | | 20,200 | | | | 23,860,240 | |
Massachusetts School Building Authority, Sales Tax Revenue, 5.00%, 11/15/46(1) | | | 1,500 | | | | 1,803,090 | |
Massachusetts, (Rail Enhancement and Accelerated Bridge Programs), 5.00%, 6/1/47(1) | | | 2,000 | | | | 2,420,160 | |
New York City Transitional Finance Authority, NY, Future Tax Revenue, 4.00%, 8/1/37(1) | | | 10,000 | | | | 11,148,500 | |
New York City Transitional Finance Authority, NY, Future Tax Revenue, 4.00%, 8/1/39(1) | | | 5,000 | | | | 5,548,350 | |
New York City Transitional Finance Authority, NY, Future Tax Revenue, 4.00%, 5/1/42 | | | 3,120 | | | | 3,527,472 | |
New York City Transitional Finance Authority, NY, Future Tax Revenue, 5.00%, 2/1/37(1) | | | 20,000 | | | | 21,209,800 | |
New York City Transitional Finance Authority, NY, Future Tax Revenue, 5.50%, 11/1/35(1) | | | 2,145 | | | | 2,178,183 | |
New York City Transitional Finance Authority, NY, Future Tax Revenue, Prerefunded to 11/1/20, 5.50%, 11/1/35(1) | | | 1,655 | | | | 1,683,913 | |
| | | | | | | | |
Security | | Principal Amount (000’s omitted) | | | Value | |
New York Convention Center Development Corp., Hotel Occupancy Tax, 5.00%, 11/15/45(1) | | $ | 13,000 | | | $ | 13,865,280 | |
New York Dormitory Authority, Personal Income Tax Revenue, 5.00%, 6/15/31 | | | 10,000 | | | | 10,948,400 | |
New York Dormitory Authority, Sales Tax Revenue, 4.00%, 3/15/46(1) | | | 14,000 | | | | 15,435,140 | |
New York Dormitory Authority, Sales Tax Revenue, 5.00%, 3/15/43(1) | | | 6,000 | | | | 7,340,940 | |
New York State Urban Development Corp., Personal Income Tax Revenue, 4.00%, 3/15/45(1) | | | 2,800 | | | | 3,125,724 | |
Pennsylvania Turnpike Commission, Oil Franchise Tax Revenue, 5.25%, 12/1/44(1) | | | 3,750 | | | | 4,668,262 | |
| | | | | | | | |
| | | | | | $ | 200,310,182 | |
| | | | | | | | |
Transportation — 16.9% | | | | | | | | |
Chicago, IL, (O’Hare International Airport), 5.00%, 1/1/34 | | $ | 1,000 | | | $ | 1,131,860 | |
Chicago, IL, (O’Hare International Airport), 5.00%, 1/1/38 | | | 2,105 | | | | 2,407,215 | |
Dallas and Fort Worth, TX, (Dallas/Fort Worth International Airport), 5.25%, 11/1/30 | | | 3,845 | | | | 4,346,273 | |
Dallas and Fort Worth, TX, (Dallas/Fort Worth International Airport), 5.25%, 11/1/31 | | | 5,940 | | | | 6,704,003 | |
Delaware River and Bay Authority of Delaware and New Jersey, 4.00%, 1/1/44(1) | | | 8,850 | | | | 9,942,444 | |
Delaware River Joint Toll Bridge Commission of Pennsylvania and New Jersey, 5.00%, 7/1/37(1) | | | 1,150 | | | | 1,418,812 | |
Delaware River Joint Toll Bridge Commission of Pennsylvania and New Jersey, 5.00%, 7/1/47(1) | | | 4,575 | | | | 5,530,123 | |
Illinois Toll Highway Authority, 5.00%, 1/1/37(1) | | | 10,000 | | | | 11,551,000 | |
Illinois Toll Highway Authority, 5.00%, 1/1/41(1) | | | 12,425 | | | | 14,378,086 | |
Kansas Department of Transportation, 5.00%, 9/1/35(1) | | | 10,000 | | | | 11,742,600 | |
Los Angeles Department of Airports, CA, (Los Angeles International Airport), 5.25%, 5/15/28 | | | 1,470 | | | | 1,484,847 | |
Metropolitan Transportation Authority, NY, 5.25%, 11/15/32 | | | 5,000 | | | | 5,463,150 | |
Metropolitan Transportation Authority, NY, Green Bonds, 4.00%, 11/15/38 | | | 1,175 | | | | 1,237,263 | |
Miami-Dade County, FL, (Miami International Airport), 5.00%, 10/1/41 | | | 12,920 | | | | 13,048,296 | |
New Jersey Economic Development Authority, (Transit Transportation Project), 4.00%, 11/1/39 | | | 1,875 | | | | 1,933,669 | |
New Jersey Transportation Trust Fund Authority, (Transportation Program), 5.00%, 6/15/38 | | | 130 | | | | 137,328 | |
New Jersey Transportation Trust Fund Authority, (Transportation Program), 5.00%, 6/15/44 | | | 2,740 | | | | 3,000,492 | |
New Jersey Transportation Trust Fund Authority, (Transportation System), 5.00%, 12/15/24 | | | 10,000 | | | | 11,073,300 | |
New Jersey Transportation Trust Fund Authority, (Transportation System), 5.25%, 12/15/23 | | | 1,000 | | | | 1,096,570 | |
New Jersey Transportation Trust Fund Authority, (Transportation System), 5.50%, 6/15/31 | | | 1,150 | | | | 1,176,657 | |
New Jersey Turnpike Authority, 5.00%, 1/1/48(1) | | | 10,000 | | | | 11,980,400 | |
New York Liberty Development Corp., (4 World Trade Center), 5.00%, 11/15/31 | | | 1,070 | | | | 1,116,609 | |
Port Authority of New York and New Jersey, 4.00%, 9/1/43(1) | | | 14,000 | | | | 15,790,320 | |
Port Authority of New York and New Jersey, 5.00%, 12/1/34(1) | | | 16,400 | | | | 18,315,520 | |
Port Authority of New York and New Jersey, 5.00%, 10/15/35(1) | | | 2,675 | | | | 3,134,244 | |
Port Authority of New York and New Jersey, 5.00%, 7/15/39 | | | 5,000 | | | | 5,013,200 | |
Port Authority of New York and New Jersey, 5.00%, 10/15/42(1) | | | 3,750 | | | | 4,460,662 | |
Texas Private Activity Bond Surface Transportation Corp., (North Tarrant Express Segment 3C), (AMT), 5.00%, 6/30/58 | | | 8,165 | | | | 9,292,097 | |
Texas Transportation Commission, (Central Texas Turnpike System), 5.00%, 8/15/42 | | | 1,765 | | | | 1,906,129 | |
| | | | | | | | |
| | | | | | $ | 179,813,169 | |
| | | | | | | | |
Water and Sewer — 12.9% | | | | | | | | |
Atlanta, GA, Water and Wastewater Revenue, 5.00%, 11/1/43(1) | | $ | 3,750 | | | $ | 4,648,875 | |
Atlanta, GA, Water and Wastewater Revenue, 5.00%, 11/1/47(1) | | | 5,900 | | | | 7,279,538 | |
Charleston, SC, Waterworks and Sewer Revenue, Prerefunded to 1/1/25, 5.00%, 1/1/45(1) | | | 25,000 | | | | 30,133,000 | |
Dallas, TX, Waterworks and Sewer System Revenue, 5.00%, 10/1/41(1) | | | 15,000 | | | | 18,239,400 | |
East Baton Rouge Sewerage Commission, LA, 4.00%, 2/1/45(1) | | | 10,000 | | | | 11,596,500 | |
Grand Rapids, MI, Sanitary Sewer System Revenue, 5.00%, 1/1/43(1) | | | 2,500 | | | | 3,067,575 | |
Massachusetts Water Resources Authority, Green Bonds, 5.00%, 8/1/40(1) | | | 2,000 | | | | 2,422,800 | |
Metropolitan St. Louis Sewer District, MO, 5.00%, 5/1/35(1) | | | 8,750 | | | | 10,427,112 | |
Metropolitan St. Louis Sewer District, MO, 5.00%, 5/1/36(1) | | | 7,925 | | | | 9,424,648 | |
| | | | | | | | |
Security | | Principal Amount (000’s omitted) | | | Value | |
New York City Municipal Water Finance Authority, NY, 5.00%, 6/15/31 | | $ | 10,000 | | | $ | 10,825,900 | |
Northeast Ohio Regional Sewer District, 4.00%, 11/15/33(1) | | | 1,000 | | | | 1,067,890 | |
Port Huron, MI, Water Supply System, 5.25%, 10/1/31 | | | 250 | | | | 264,345 | |
Portland, OR, Water System, 5.00%, 5/1/36 | | | 5,385 | | | | 5,583,276 | |
Texas Water Development Board, 4.00%, 10/15/47(1) | | | 2,900 | | | | 3,356,286 | |
Texas Water Development Board, 5.00%, 10/15/40(1) | | | 15,500 | | | | 18,684,630 | |
| | | | | | | | |
| | | | | | $ | 137,021,775 | |
| | | | | | | | |
| | |
Total Tax-Exempt Investments — 170.1% (identified cost $1,645,684,026) | | | | | | $ | 1,803,966,138 | |
| | | | | | | | |
| | |
Corporate Bonds & Notes — 1.3% | | | | | | | | |
| | |
Security | | Principal Amount (000’s omitted) | | | Value | |
Hospital — 1.3% | | | | | | | | |
Montefiore Obligated Group, 4.287%, 9/1/50 | | $ | 13,890 | | | $ | 13,807,781 | |
| | | | | | | | |
| | |
Total Corporate Bonds & Notes — 1.3% (identified cost $13,890,000) | | | | | | $ | 13,807,781 | |
| | | | | | | | |
| | |
Total Investments — 171.4% (identified cost $1,659,574,026) | | | | | | $ | 1,817,773,919 | |
| | | | | | | | |
| | |
Other Assets, Less Liabilities — (71.4)% | | | | | | $ | (757,530,891 | ) |
| | | | | | | | |
| | |
Net Assets — 100.0% | | | | | | $ | 1,060,243,028 | |
| | | | | | | | |
The percentage shown for each investment category in the Portfolio of Investments is based on net assets.
At June 30, 2020, the concentration of the Fund’s investments in the various states and territories, determined as a percentage of total investments, is as follows:
The Fund invests primarily in debt securities issued by municipalities. The ability of the issuers of the debt securities to meet their obligations may be affected by economic developments in a specific industry or municipality. At June 30, 2020, 21.8% of total investments are backed by bond insurance of various financial institutions and financial guaranty assurance agencies. The aggregate percentage insured by an individual financial institution or financial guaranty assurance agency ranged from 0.1% to 7.1% of total investments.
The Fund did not have any open derivative instruments at June 30, 2020.
Under generally accepted accounting principles for fair value measurements, a three-tier hierarchy to prioritize the assumptions, referred to as inputs, is used in valuation techniques to measure fair value. The three-tier hierarchy of inputs is summarized in the three broad levels listed below.
In cases where the inputs used to measure fair value fall in different levels of the fair value hierarchy, the level disclosed is determined based on the lowest level input that is significant to the fair value measurement in its entirety. The inputs or methodology used for valuing securities are not necessarily an indication of the risk associated with investing in those securities.
At June 30, 2020, the hierarchy of inputs used in valuing the Fund’s investments, which are carried at value, were as follows:
For information on the Fund’s policy regarding the valuation of investments and other significant accounting policies, please refer to the Fund’s most recent financial statements included in its semiannual or annual report to shareholders.