MFS Investment Grade Municipal Trust (CXH) N-CSRS Certified semi-annual shareholder report (management investment company)

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORMN-CSR

CERTIFIED SHAREHOLDER REPORT OF

REGISTERED MANAGEMENT INVESTMENT COMPANIES

Investment Company Act file number811-05785

MFS INVESTMENT GRADE MUNICIPAL TRUST

(Exact name of registrant as specified in charter)

111 Huntington Avenue, Boston, Massachusetts 02199

(Address of principal executive offices) (Zip code)

Christopher R. Bohane

Massachusetts Financial Services Company

111 Huntington Avenue

Boston, Massachusetts 02199

(Name and address of agents for service)

Registrant’s telephone number, including area code: (617)954-5000

Date of fiscal year end: November 30

Date of reporting period: May 31, 2019

ITEM 1. REPORTS TO STOCKHOLDERS.

Semiannual Report

May 31, 2019

MFS® Investment Grade Municipal Trust

Beginning on January 1, 2021, as permitted by regulations adopted by the U.S. Securities and Exchange Commission, paper copies of the fund’s annual and semiannual shareholder reports will no longer be sent by mail, unless you specifically request paper copies of the reports. Instead, the complete reports will be made available on the fund’s Web site, and you will be notified by mail each time a report is posted and provided with a Web site link to access the report.

If you are already signed up to receive shareholder reports by email, you will not be affected by this change and you need not take any action. You may sign up to receive shareholder reports and other communications from the fund by email by contacting your financial intermediary (such as a broker-dealer or bank) or, if you hold your shares directly with the fund, by calling 1-800-637-2304 or by logging into your Investor Center account at www.computershare.com/investor.

Beginning on January 1, 2019, you may elect to receive all future reports in paper free of charge. Contact your financial intermediary to request that you continue to receive paper copies of your shareholder reports. If you invest directly with the fund, you can call 1-800-637-2304 to let the fund know that you wish to continue receiving paper copies of your shareholder reports. Your election to receive reports in paper will apply to all funds held in your account if you invest through your financial intermediary or all funds held with the MFS fund complex if you invest directly.

CXH-SEM

MFS® Investment Grade Municipal Trust

New York Stock Exchange Symbol:CXH

Letter from the Executive Chairman	1
Portfolio composition	2
Portfolio managers’ profiles	4
Other notes	4
Portfolio of investments	5
Statement of assets and liabilities	36
Statement of operations	37
Statements of changes in net assets	38
Statement of cash flows	39
Financial highlights	40
Notes to financial statements	43
Report of independent registered public accounting firm	53
Proxy voting policies and information	54
Quarterly portfolio disclosure	54
Further information	54
Information about fund contracts and legal claims	54
Contact information    back cover

NOT FDIC INSURED• MAY LOSE VALUE• NO BANK GUARANTEE

LETTER FROM THE EXECUTIVE CHAIRMAN

Dear Shareholders:

Markets experienced a bout of volatility in late 2018 as a result of higher interest rates, international trade friction, and geopolitical uncertainty surrounding issues such as

Brexit. Those concerns dissipated in the early months of 2019 due to the more dovish posture of the U.S. Federal Reserve and other global central banks, reported progress toward a trade pact between the United States and China, and action against ano-deal Brexit by the British Parliament. However, a last-minute breakdown in negotiations between the U.S. and China derailed the market’s momentum and increased concerns over the future pace of global growth. Compounding Brexit uncertainty was the resignation of British Prime Minister Theresa May, potentially ushering in a harder form of Brexit than she had advocated. U.S. equities have continued to outperform their global peers due in

part to fiscal stimulus undertaken in late 2017 and early 2018, which contributed to the continuation of relatively healthy levels of U.S. economic output against a backdrop of slower global growth. Inflation remains largely subdued globally, which is encouraging for asset markets. Rising incomes in many developed and emerging markets are supportive of gains in consumption, though a challenging environment for global trade has hindered manufacturing in most regions. Interest rates have fallen as a result of these challenges, and easier central bank policies are anticipated by markets.

Since launching the first U.S.open-end mutual fund in 1924, MFS® has been committed to a single purpose: to create value by allocating capital responsibly for clients. Through our powerful global investment platform, we combine collective expertise, thoughtful risk management, and long-term discipline to uncover what we believe are the best investment opportunities in the market.

Respectfully,

Robert J. Manning

Executive Chairman

MFS Investment Management

July 17, 2019

The opinions expressed in this letter are subject to change and may not be relied upon for investment advice. No forecasts can be guaranteed.

1

PORTFOLIO COMPOSITION

Portfolio structure (i)

Top ten industries (i)
Healthcare Revenue – Hospitals	23.1%
Water & Sewer Utility Revenue	15.4%
Student Loan Revenue	13.8%
Universities – Colleges	13.0%
General Obligations – General Purpose	9.6%
Transportation – Special Tax	9.2%
Tax Assessment	7.7%
Utilities – Municipal Owned	7.5%
Miscellaneous Revenue – Other	6.4%
Airport Revenue	6.3%

Composition including fixed income credit quality (a)(i)
AAA	4.0%
AA	44.6%
A	51.0%
BBB	27.9%
BB	6.2%
B	1.1%
CCC	0.5%
CC	0.6%
C	3.1%
D	2.2%
Not Rated	15.1%
Cash & Cash Equivalents (Less Liabilities)	(50.2)%
Other	(6.1)%
Portfolio facts (i)
Average Duration (d)	9.3
Average Effective Maturity (m)	15.9 yrs.

(a) For all securities other than those specifically described below, ratings are assigned to underlying securities utilizing ratings from Moody’s, Fitch, and Standard & Poor’s rating agencies and applying the following hierarchy: If all three agencies provide a rating, the middle rating (after dropping the highest and lowest ratings) is assigned; if two of the three agencies rate a security, the lower of the two is assigned. Ratings are shown in the S&P and Fitch scale (e.g., AAA). Securities rated BBB or higher are considered investment grade. All ratings are subject to change. Not Rated includes fixed income securities and fixed income derivatives, which have not been rated by any rating agency. The fund may or may not have held all of these instruments on this date. The fund is not rated by these agencies.

2

Portfolio Composition – continued

(d) Duration is a measure of how much a bond’s price is likely to fluctuate with general changes in interest rates, e.g., if rates rise 1.00%, a bond with a5-year duration is likely to lose about 5.00% of its value due to the interest rate move. This calculation is based on net assets applicable to common shares as of May 31. 2019.

(i) For purposes of this presentation, the components include the value of securities, and reflect the impact of the equivalent exposure of derivative positions, if any. These amounts may be negative from time to time. Equivalent exposure is a calculated amount that translates the derivative position into a reasonable approximation of the amount of the underlying asset that the portfolio would have to hold at a given point in time to have the same price sensitivity that results from the portfolio’s ownership of the derivative contract. When dealing with derivatives, equivalent exposure is a more representative measure of the potential impact of a position on portfolio performance than value. The bond component will include any accrued interest amounts.

(m) In determining each instrument’s effective maturity for purposes of calculating the fund’s dollar-weighted average effective maturity, MFS uses the instrument’s stated maturity or, if applicable, an earlier date on which MFS believes it is probable that a maturity-shortening device (such as a put,pre-refunding or prepayment) will cause the instrument to be repaid. Such an earlier date can be substantially shorter than the instrument’s stated maturity. This calculation is based on gross assets, which consists of net assets applicable to common shares plus the value of preferred shares, as of May 31, 2019.

Cash & Cash Equivalents includes any cash, investments in money market funds, short-term securities, and other assets less liabilities. Please see the Statement of Assets and Liabilities for additional information related to the fund’s cash position and other assets and liabilities.

Cash & Cash Equivalents is negative due to the aggregate liquidation value of variable rate municipal term preferred shares.

Other includes equivalent exposure from currency derivatives and/or any offsets to derivative positions and/or the leverage created through the issuance of self-deposited inverse floaters and may be negative.

Percentages are based on net assets applicable to common shares as of May 31, 2019.

The portfolio is actively managed and current holdings may be different.

3

PORTFOLIO MANAGERS’ PROFILES

Portfolio Manager	Primary Role	Since	Title and Five Year History
Michael Dawson	Portfolio Manager	2007	Investment Officer of MFS; employed in the investment management area of MFS since 1998.
Geoffrey Schechter	Portfolio Manager	2007	Investment Officer of MFS; employed in the investment management area of MFS since 1993.

OTHER NOTES

The fund’s shares may trade at a discount or premium to net asset value. When fund shares trade at a premium, buyers pay more than the net asset value underlying fund shares, and shares purchased at a premium would receive less than the amount paid for them in the event of the fund’s concurrent liquidation.

The fund’s monthly distributions may include a return of capital to shareholders to the extent that distributions are in excess of the fund’s net investment income and net capital gains, determined in accordance with federal income tax regulations. Distributions that are treated for federal income tax purposes as a return of capital will reduce each shareholder’s basis in his or her shares and, to the extent the return of capital exceeds such basis, will be treated as gain to the shareholder from a sale of shares. Returns of shareholder capital may have the effect of reducing the fund’s assets and increasing the fund’s expense ratio.

In accordance with Section 23(c) of the Investment Company Act of 1940, the fund hereby gives notice that it may from time to time repurchase common and/or preferred shares of the fund in the open market at the option of the Board of Trustees and on such terms as the Trustees shall determine.

4

PORTFOLIO OF INVESTMENTS

5/31/19 (unaudited)

The Portfolio of Investments is a complete list of all securities owned by your fund. It is categorized by jurisdiction.

Municipal Bonds - 153.1%
Issuer	Shares/Par		Value ($)
Alabama - 1.9%
Birmingham, AL, Special Care Facilities Financing Authority Rev. (Methodist Home for the Aging), 5.25%, 6/01/2025	$	70,000	$	78,497
Jefferson County, AL, Sewer Rev. Warrants, Capital Appreciation, Senior Lien, “B”, AGM, 0%, 10/01/2026		95,000		74,812
Jefferson County, AL, Sewer Rev. Warrants, Capital Appreciation, Senior Lien, “B”, AGM, 0%, 10/01/2029		135,000		86,983
Jefferson County, AL, Sewer Rev. Warrants, Capital Appreciation, Senior Lien, “B”, AGM, 0%, 10/01/2034		190,000		85,736
Jefferson County, AL, Sewer Rev. Warrants, Capital Appreciation, Senior Lien, “B”, AGM, 0%, 10/01/2035		365,000		154,045
Pell City, AL, Special Care Facilities, Financing Authority Rev. (Noland Health Services, Inc.), 5%, 12/01/2039		140,000		149,930
Tuscaloosa County, AL, Industrial Development Authority, Gulf Opportunity Zone (Hunt Refining Project), “A”, 4.5%, 5/01/2032		275,000		296,178
Tuscaloosa County, AL, Industrial Development Authority, Gulf Opportunity Zone (Hunt Refining Project), “A”, 5.25%, 5/01/2044		510,000		560,352
University of South Alabama, Facilities Rev., “A”, BAM, 5%, 4/01/2044		170,000		204,218
University of South Alabama, Facilities Rev., “A”, BAM, 5%, 4/01/2049		100,000		119,475
			$	1,810,226
Arizona - 1.9%
Arizona Industrial Development Authority, Senior Living Rev. (Great Lakes Senior Living Facilities LLC, First Tier), “A”, 5%, 1/01/2043	$	70,000	$	78,109
Arizona Industrial Development Authority, Senior Living Rev. (Great Lakes Senior Living Facilities LLC, First Tier), “A”, 5%, 1/01/2054		120,000		131,902
Phoenix, AZ, Industrial Development Authority Education Facility Rev. (Great Hearts Academies Project), “A”, 5%, 7/01/2036		60,000		65,884
Phoenix, AZ, Industrial Development Authority Education Facility Rev. (Great Hearts Academies Project), “A”, 5%, 7/01/2041		45,000		48,921
Phoenix, AZ, Industrial Development Authority Education Facility Rev. (Great Hearts Academies Project), “A”, 5%, 7/01/2046		80,000		86,650
Phoenix, AZ, Industrial Development Authority Education Facility Rev. (Legacy Traditional Schools Project), 5%, 7/01/2035		70,000		74,634
Phoenix, AZ, Industrial Development Authority Education Facility Rev. (Legacy Traditional Schools Project), 5%, 7/01/2045		80,000		83,966
Pima County, AZ, Industrial Development Authority Education Facility Rev. (American Leadership Academy Project), 5%, 6/15/2047		165,000		168,906

5

Portfolio of Investments (unaudited) – continued

Issuer	Shares/Par		Value ($)
Municipal Bonds - continued
Arizona - continued
Pima County, AZ, Industrial Development Authority Education Facility Rev. (American Leadership Academy Project), 5%, 6/15/2052	$	145,000	$	148,225
Salt Verde Financial Corp., AZ, Senior Gas Rev., 5%, 12/01/2032		795,000		1,003,131
			$	1,890,328
Arkansas - 0.2%
Arkansas Development Finance Authority Hospital Rev. (Washington Regional Medical Center), “A”, 5%, 2/01/2035	$	30,000	$	33,818
Arkansas Development Finance Authority Hospital Rev. (Washington Regional Medical Center), “C”, 5%, 2/01/2033		50,000		56,691
Pulaski County, AR, Public Facilities Board, Healthcare Rev. (Baptist Health), 5%, 12/01/2042		120,000		132,794
			$	223,303
California - 14.4%
Beverly Hills, CA, Unified School District (Election of 2008), Capital Appreciation, 0%, 8/01/2031	$	130,000	$	96,730
Beverly Hills, CA, Unified School District (Election of 2008), Capital Appreciation, 0%, 8/01/2032		235,000		168,761
Beverly Hills, CA, Unified School District (Election of 2008), Capital Appreciation, 0%, 8/01/2033		470,000		327,214
California Department of Water Resources, Center Valley Project Rev., “AJ”, 5%, 12/01/2035 (Prerefunded 12/01/2021)		1,000,000		1,093,520
California Educational Facilities Authority Rev. (Chapman University), 5%, 4/01/2031		135,000		143,352
California Educational Facilities Authority Rev. (University of San Francisco), 6.125%, 10/01/2036 (Prerefunded 10/01/2021)		35,000		38,872
California Educational Facilities Authority Rev. (University of San Francisco), 6.125%, 10/01/2036 (Prerefunded 10/01/2021)		40,000		44,474
California Health Facilities Financing Authority Rev. (St. Joseph Health System), “A”, 5.75%, 7/01/2039		195,000		195,612
California Health Facilities Financing Authority Rev. (Sutter Health), “B”, 5.875%, 8/15/2031 (Prerefunded 8/15/2020)		535,000		563,906
California Municipal Finance Authority Rev. (University of La Verne), “A”, 6.25%, 6/01/2040 (Prerefunded 6/01/2020)		70,000		73,431
California Public Works Board Lease Rev. (Various Capital Projects), “I”, 5%, 11/01/2038		1,220,000		1,379,613
California Public Works Board Lease Rev., Department of Corrections and Rehabilitation (Various Correctional Facilities), “A”, 5%, 9/01/2033		1,135,000		1,304,921
California School Finance Authority, School Facility Rev. (Alliance for College-Ready Public Schools Projects), “A”, 5%, 7/01/2030		40,000		45,572
California School Finance Authority, School Facility Rev. (Alliance for College-Ready Public Schools Projects), “A”, 5%, 7/01/2045		100,000		110,564

6

Portfolio of Investments (unaudited) – continued

Issuer	Shares/Par		Value ($)
Municipal Bonds - continued
California - continued
California State University Rev., “A”, 5%, 11/01/2037	$	805,000	$	867,339
California Statewide Communities Development Authority Rev. (Loma Linda University Medical Center), “A”, 5.25%, 12/01/2034		85,000		95,069
California Statewide Communities Development Authority Rev. (Loma Linda University Medical Center), “A”, 5.25%, 12/01/2044		245,000		270,056
California Statewide Communities Development Authority Rev. (Loma Linda University Medical Center), “A”, 5%, 12/01/2046		120,000		132,344
California Statewide Communities Development Authority, College Housing Rev. (NCCD-Hooper Street LLC College of the Arts Project), 5.25%, 7/01/2049		100,000		113,294
California Statewide Communities Development Authority, Environmental Facilities Rev. (Microgy Holdings Project), 9%, 12/01/2038 (a)(d)		25,246		0
Chula Vista, CA, Industrial Development Rev. (San Diego Gas & Electric Co.), “E”, 5.875%, 1/01/2034		195,000		195,682
Golden State, CA, Tobacco Securitization Corp., Tobacco Settlement Rev., “A”, 5%, 6/01/2030		85,000		96,463
Golden State, CA, Tobacco Securitization Corp., Tobacco Settlement Rev., “A”, 3.5%, 6/01/2036		100,000		101,149
La Verne, CA, Brethren Hillcrest Homes, COP, 5%, 5/15/2036		50,000		52,419
Los Angeles County, CA, Redevelopment Refunding Authority Tax Allocation Rev., “D”, AGM, 5%, 9/01/2023		210,000		240,355
Los Angeles County, CA, Regional Financing Authority Rev. (Montecedro, Inc. Project), “A”, CALHF, 5%, 11/15/2034		35,000		38,902
Los Angeles County, CA, Regional Financing Authority Rev. (Montecedro, Inc. Project), “A”, CALHF, 5%, 11/15/2044		65,000		71,936
Mount San Antonio, CA, Community College District Rev. (Election of 2008), Convertible Capital Appreciation, “A”, 0% to 8/01/2023, 5.875% to 8/01/2028		140,000		148,289
Mount San Antonio, CA, Community College District Rev. (Election of 2008), Convertible Capital Appreciation, “A”, 0% to 8/01/2028, 6.25% to 8/01/2043		355,000		334,541
Oroville, CA, Rev. (Oroville Hospital), 5.25%, 4/01/2049		30,000		34,556
Oroville, CA, Rev. (Oroville Hospital), 5.25%, 4/01/2054		50,000		57,319
Riverside County, CA, Transportation Commission Sales Tax Rev. (Limited Tax), “A”, 5.25%, 6/01/2039 (Prerefunded 6/01/2023)		345,000		398,861
San Diego County, CA, Regional Airport Authority Rev., “A”, 5%, 7/01/2040		835,000		863,757
San Francisco, CA, City & County Airports Commission, International Airport Rev., “A”, 5%, 1/01/2047		50,000		59,463
San Francisco, CA, City & County Airports Commission, International Airport Rev., “D”, 5%, 5/01/2025 (Prerefunded 5/03/2021)		285,000		305,258

7

Portfolio of Investments (unaudited) – continued

Issuer	Shares/Par		Value ($)
Municipal Bonds - continued
California - continued
San Francisco, CA, City & County Airports Commission, International Airport Rev., Unrefunded Balance, “D”, 5%, 5/01/2025	$	715,000	$	765,851
San Francisco, CA, City & County Redevelopment Successor Agency, Tax Allocation (Mission Bay South Redevelopment Project), “A”, 5%, 8/01/2043		25,000		28,210
San Jose, CA, Airport Rev.,“A-2”, 5.25%, 3/01/2034		710,000		751,961
State of California, 5.25%, 10/01/2028		270,000		293,609
State of California, 5.25%, 9/01/2030		645,000		698,677
State of California, 5%, 4/01/2045		770,000		945,252
Upland, CA, (San Antonio Community Hospital), COP, 6.5%, 1/01/2041 (Prerefunded 1/01/2021)		85,000		91,826
West Contra Costa, CA, Unified School District, “B”, NATL, 6%, 8/01/2024		190,000		213,353
Whittier, CA, Health Facility Rev. (PIH Health), 5%, 6/01/2044		125,000		138,098
			$	13,990,431
Colorado - 2.8%
Colorado Educational & Cultural Facilities Authority Rev. (Classical Academy Project), “A”, 5%, 12/01/2038	$	75,000	$	83,567
Colorado Educational & Cultural Facilities Authority Rev. (Montessori Charter School Project), 5%, 7/15/2037		40,000		43,004
Colorado Educational & Cultural Facilities Authority Rev. (Twin Peaks Charter Academy Project), 5%, 11/15/2031		145,000		162,177
Colorado Health Facilities Authority Rev. (Evangelical Lutheran Good Samaritan Society), 5.625%, 6/01/2043		90,000		99,823
Colorado Health Facilities Authority Rev. (SCL Health System), “A”, 5%, 1/01/2044		380,000		418,813
Colorado Regional Transportation District, Private Activity Rev. (Denver Transportation Partners), 6.5%, 1/15/2030		560,000		584,371
Colorado Regional Transportation District, Private Activity Rev.
(Denver Transportation Partners), 6%, 1/15/2034		480,000		498,274
Denver, CO, Convention Center Hotel Authority Rev., 5%, 12/01/2035		70,000		80,444
Denver, CO, Convention Center Hotel Authority Rev., 5%, 12/01/2040		120,000		136,902
Denver, CO, Health & Hospital Authority Rev., “A”, 5.25%, 12/01/2045		95,000		104,320
Park Creek Metropolitan District, CO, Senior Limited Property Tax Supported Rev., “A”, NATL, 5%, 12/01/2045		405,000		455,390
			$	2,667,085
Connecticut - 1.1%
Mohegan Tribal Finance Authority, CT, Economic Development Bonds, 7%, 2/01/2045 (n)	$	175,000	$	181,990
State of Connecticut, Special Tax Obligation Rev., “A”, 5%, 12/01/2029		405,000		435,707

8

Portfolio of Investments (unaudited) – continued

Issuer	Shares/Par		Value ($)
Municipal Bonds - continued
Connecticut - continued
State of Connecticut, Special Tax Obligation Rev., “A”, 5%, 12/01/2030	$	385,000	$	413,351
			$	1,031,048
District of Columbia - 1.7%
District of Columbia Rev. (Georgetown University), BHAC, 5%, 4/01/2040	$	1,430,000	$	1,521,077
District of Columbia Rev. (Kipp, D.C. Charter School), “A”, 6%, 7/01/2033 (Prerefunded 7/01/2023)		40,000		47,141
District of Columbia Rev. (Kipp, D.C. Charter School), “A”, 6%, 7/01/2043 (Prerefunded 7/01/2023)		105,000		123,746
			$	1,691,964
Florida - 4.8%
Bellalago, FL, Educational Facilities Benefit District (Osceola County) Capital Improvement Refunding Rev., 4.375%, 5/01/2030	$	80,000	$	87,473
Bellalago, FL, Educational Facilities Benefit District (Osceola County) Capital Improvement Refunding Rev., 4.5%, 5/01/2033		35,000		38,177
Bellalago, FL, Educational Facilities Benefit District (Osceola County) Capital Improvement Refunding Rev., 4.6%, 5/01/2034		60,000		65,572
Collier County, FL, Educational Facilities Authority Rev. (Ave Maria University, Inc. Project), “A”, 6.125%, 6/01/2043		440,000		475,191
Daytona Beach, FL, Halifax Hospital Medical Center Rev., 5%, 6/01/2029		105,000		119,669
Daytona Beach, FL, Halifax Hospital Medical Center Rev., 5%, 6/01/2030		105,000		118,985
Florida Higher Educational Facilities Financing Authority Rev.
(Jacksonville University Project), “A”, 5%, 6/01/2048		100,000		108,196
Martin County, FL, Health Facilities Authority Hospital Rev. (Cleveland Clinic Health System), “A”, 4%, 1/01/2046		155,000		169,086
Miami-Dade County, FL, Health Facilities Authority Hospital Rev., 6.125%, 8/01/2042 (Prerefunded 8/01/2020)		145,000		152,514
Miami-Dade County, FL, Health Facilities Authority Hospital Rev., Unrefunded Balance, 6.125%, 8/01/2042		50,000		52,324
Miami-Dade County, FL, Special Obligation, “B”, 5%, 10/01/2035		180,000		197,417
Mid-Bay Bridge Authority, FL, Springing Lien Rev., “A”, 7.25%, 10/01/2040 (Prerefunded 10/01/2021)		175,000		197,472
North Broward, FL, Hospital District Rev. (Broward Health), “B”, 5%, 1/01/2042		275,000		306,963
Pasco County, FL, Del Webb Bexley Community Development District, Special Assessment Rev., 5.4%, 5/01/2049		100,000		104,449
South Lake County, FL, Hospital District Rev. (South Lake Hospital), “A”, 6%, 4/01/2029		105,000		105,280

9

Portfolio of Investments (unaudited) – continued

Issuer	Shares/Par		Value ($)
Municipal Bonds - continued
Florida - continued
South Lake County, FL, Hospital District Rev. (South Lake Hospital), “A”, 6.25%, 4/01/2039	$	155,000	$	155,431
St. John’s County, FL, Industrial Development Authority Rev. (Presbyterian Retirement), “A”, 6%, 8/01/2045 (Prerefunded 8/01/2020)		400,000		420,392
Sumter County, FL, Industrial Development Authority Hospital Rev. (Central Florida Health Alliance Projects), “A”, 5%, 7/01/2026		20,000		22,598
Sumter County, FL, Industrial Development Authority Hospital Rev. (Central Florida Health Alliance Projects), “A”, 5%, 7/01/2029		20,000		22,356
Sumter County, FL, Industrial Development Authority Hospital Rev. (Central Florida Health Alliance Projects), “A”, 5.125%, 7/01/2034		40,000		43,964
Sumter County, FL, Industrial Development Authority Hospital Rev. (Central Florida Health Alliance Projects), “A”, 5.25%, 7/01/2044		120,000		130,920
Tampa, FL (University of Tampa Project), 5%, 4/01/2040		85,000		95,726
Tampa, FL, Sports Authority Rev. (Tampa Bay Arena), NATL, 5.75%, 10/01/2025		1,000,000		1,145,550
Westridge, FL, Community Development District, Capital Improvement Rev., 5.8%, 5/01/2037 (a)(d)		480,000		331,200
			$	4,666,905
Georgia - 2.8%
Americus and Sumter County, GA, Hospital Authority Rev. (Magnolia Manor Obligated Group), “A”, 6.25%, 5/15/2033	$	75,000	$	81,589
Americus and Sumter County, GA, Hospital Authority Rev. (Magnolia Manor Obligated Group), “A”, 6.375%, 5/15/2043		75,000		81,557
Clayton County, GA, Development Authority Special Facilities Rev. (Delta Airlines, Inc.), “A”, 8.75%, 6/01/2029		125,000		133,518
DeKalb County, GA, Water & Sewer Rev., “A”, 5.25%, 10/01/2028		125,000		135,123
DeKalb County, GA, Water & Sewer Rev., “A”, 5.25%, 10/01/2029		120,000		129,604
DeKalb County, GA, Water & Sewer Rev., “A”, 5.25%, 10/01/2030		75,000		80,966
DeKalb County, GA, Water & Sewer Rev., “A”, 5.25%, 10/01/2041		340,000		365,673
Fulton County, GA, Water & Sewer Rev., 5%, 1/01/2027		215,000		226,511
Georgia Main Street Natural Gas, Inc., Gas Project Rev., “A”, 5%, 3/15/2022		525,000		567,997
Georgia Main Street Natural Gas, Inc., Gas Project Rev., “A”, 5.5%, 9/15/2026		120,000		146,832
Georgia Main Street Natural Gas, Inc., Gas Project Rev., “A”, 5.5%, 9/15/2028		250,000		317,692
Georgia Main Street Natural Gas, Inc., Gas Project Rev., “A”, 5%, 5/15/2043		75,000		86,903
Hall County and Gainesville, GA, Hospital Authority Rev. (Northeast Georgia Health System, Inc.), “A”, 5.5%, 8/15/2054		320,000		372,861
			$	2,726,826

10

Portfolio of Investments (unaudited) – continued

Issuer	Shares/Par		Value ($)
Municipal Bonds - continued
Guam - 0.0%
Guam Government Business Privilege Tax Rev., “A”, 5.25%, 1/01/2036	$	40,000	$	42,012
Hawaii - 1.0%
Hawaii Department of Budget & Finance, Special Purpose Rev. (15 Craigside Project), “A”, 9%, 11/15/2044 (Prerefunded 11/15/2019)	$	115,000	$	118,786
Hawaii Department of Budget & Finance, Special Purpose Rev. (Hawaiian Electric Co. & Subsidiary), 6.5%, 7/01/2039		410,000		411,697
State of Hawaii, “DZ”, 5%, 12/01/2031 (Prerefunded 12/01/2021)		110,000		119,438
State of Hawaii, “DZ”, 5%, 12/01/2031 (Prerefunded 12/01/2021)		70,000		76,096
State of Hawaii, Highway Rev., “A”, 5%, 1/01/2031		120,000		129,758
State of Hawaii, Highway Rev., “A”, 5%, 1/01/2032		80,000		86,422
			$	942,197
Illinois - 14.5%
Bolingbrook, IL, Sales Tax Rev., 6.25%, 1/01/2024	$	155,000	$	152,788
Bridgeview, IL, Stadium and Redevelopment Projects, AAC, 5.14%, 12/01/2036		360,000		356,530
Chicago, IL, “A”, 5.25%, 1/01/2028		25,000		27,337
Chicago, IL, “A”, 5%, 1/01/2036		85,000		90,134
Chicago, IL, “A”, 5%, 1/01/2040		85,000		93,197
Chicago, IL, “A”, 5%, 1/01/2044		265,000		288,982
Chicago, IL, “A”, 5.5%, 1/01/2049		275,000		311,985
Chicago, IL, “A”, AGM, 5%, 1/01/2028 (Prerefunded 1/01/2020)		360,000		368,302
Chicago, IL, “A”, AGM, 4.75%, 1/01/2030		20,000		20,042
Chicago, IL, “A”, AGM, 5%, 1/01/2037		210,000		210,512
Chicago, IL, “C”, NATL, 5%, 1/01/2029		250,000		250,805
Chicago, IL, “D”, 5.5%, 1/01/2033		70,000		77,451
Chicago, IL, Board of Education (School Reform), Capital Appreciation,“B-1”, NATL, 0%, 12/01/2019		50,000		49,349
Chicago, IL, Board of Education, Dedicated Capital Improvement Tax Bond, 5%, 4/01/2046		100,000		109,183
Chicago, IL, Board of Education, Dedicated Capital Improvement Tax Bond, 6%, 4/01/2046		420,000		490,993
Chicago, IL, Board of Education, Unlimited Tax General Obligation Dedicated Rev., “C”, AGM, 5%, 12/01/2030		115,000		136,728
Chicago, IL, Board of Education, Unlimited Tax General Obligation Dedicated Rev., “C”, AGM, 5%, 12/01/2031		220,000		260,260
Chicago, IL, Board of Education, Unlimited Tax General Obligation Dedicated Rev., “C”, AGM, 5%, 12/01/2032		190,000		224,014
Chicago, IL, Board of Education, Unlimited Tax General Obligation Refunding Dedicated Rev., “A”, AGM, 5%, 12/01/2029		100,000		119,688
Chicago, IL, Board of Education, Unlimited Tax General Obligation Refunding Dedicated Rev., “H”, 5%, 12/01/2046		180,000		195,172

11

Portfolio of Investments (unaudited) – continued

Issuer	Shares/Par		Value ($)
Municipal Bonds - continued
Illinois - continued
Chicago, IL, General Obligation, “A”, 6%, 1/01/2038	$	215,000	$	249,492
Chicago, IL, Greater Chicago Metropolitan Water Reclamation District, “C”, 5%, 12/01/2029		855,000		922,870
Chicago, IL, O’Hare International Airport Rev., Customer Facility Charge, AGM, 5.25%, 1/01/2032		70,000		77,832
Chicago, IL, O’Hare International Airport Rev., Customer Facility Charge, AGM, 5.25%, 1/01/2033		35,000		38,852
Chicago, IL, O’Hare International Airport Rev., Customer Facility Charge, AGM, 5.5%, 1/01/2043		145,000		162,043
Chicago, IL, O’Hare International Airport Rev., Senior Lien, “A”, 5%, 1/01/2048		140,000		163,715
Chicago, IL, O’Hare International Airport Rev., Senior Lien, “A”, 5%, 1/01/2053		75,000		87,163
Chicago, IL, O’Hare International Airport Rev., Third Lien, “A”, 5.625%, 1/01/2035 (Prerefunded 1/01/2021)		525,000		559,513
Chicago, IL, O’Hare International Airport Rev., Third Lien, Unrefunded Balance, “A”, 5.625%, 1/01/2035		125,000		132,561
Chicago, IL, Transit Authority Sales Tax Receipts Rev., 5.25%, 12/01/2029		155,000		165,424
Chicago, IL, Transit Authority Sales Tax Receipts Rev., 5.25%, 12/01/2030		310,000		330,258
Chicago, IL, Transit Authority Sales Tax Receipts Rev., 5.25%, 12/01/2031		60,000		63,884
Chicago, IL, Transit Authority Sales Tax Receipts Rev., 5.25%, 12/01/2040		410,000		433,276
Cook County, IL, Community College District No. 508 (City Colleges), BAM, 5%, 12/01/2047		455,000		513,527
Illinois Finance Authority Rev. (Edward-Elmhurst Healthcare), “A”, 5%, 1/01/2034		145,000		167,213
Illinois Finance Authority Rev. (Edward-Elmhurst Healthcare), “A”, 5%, 1/01/2035		145,000		166,477
Illinois Finance Authority Rev. (Franciscan Communities, Inc.), “A”, 4.75%, 5/15/2033		160,000		166,114
Illinois Finance Authority Rev. (Franciscan Communities, Inc.), “A”, 5.125%, 5/15/2043		125,000		130,364
Illinois Finance Authority Rev. (Presence Health Network), “C”, 5%, 2/15/2036		85,000		99,769
Illinois Finance Authority Rev. (Presence Health Network), “C”, 5%, 2/15/2041		120,000		139,180
Illinois Finance Authority Rev. (Rehabilitation Institute of Chicago), “A”, 6%, 7/01/2043		565,000		637,134
Illinois Finance Authority Rev. (Silver Cross Hospital & Medical Centers), “C”, 5%, 8/15/2035		315,000		354,114

12

Portfolio of Investments (unaudited) – continued

Issuer	Shares/Par		Value ($)
Municipal Bonds - continued
Illinois - continued
Illinois Finance Authority Rev. (University of Chicago), “A”, 5%, 10/01/2035	$	1,000,000	$	1,146,550
Illinois Finance Authority Student Housing Rev. (Northern Illinois University Project), 6.625%, 10/01/2031		390,000		416,243
Illinois Railsplitter Tobacco Settlement Authority Rev., 5.5%, 6/01/2023 (Prerefunded 6/01/2021)		150,000		161,730
Illinois Railsplitter Tobacco Settlement Authority Rev., 6%, 6/01/2028 (Prerefunded 6/01/2021)		1,145,000		1,245,726
Lincolnshire, IL, Special Service Area No. 1 (Sedgebrook Project), 6.25%, 3/01/2034		157,000		157,273
Romeoville, IL, Rev. (Lewis University Project), “A”, 5%, 10/01/2042		130,000		140,153
Romeoville, IL, Rev. (Lewis University Project), “B”, 5%, 10/01/2039		60,000		64,927
Romeoville, IL, Rev. (Lewis University Project), “B”, 4.125%, 10/01/2041		45,000		45,876
Romeoville, IL, Rev. (Lewis University Project), “B”, 4.125%, 10/01/2046		50,000		50,930
State of Illinois, 5%, 6/01/2020		190,000		195,702
State of Illinois, 5%, 11/01/2027		330,000		381,143
State of Illinois, AGM, 5%, 2/01/2027		95,000		105,991
State of Illinois, “D”, 5%, 11/01/2028		335,000		385,253
			$	14,091,724
Indiana - 3.0%
Indiana Finance Authority Health Facilities Rev. (Baptist Healthcare System Obligated Group), 5%, 8/15/2051	$	295,000	$	331,615
Indiana Finance Authority Rev. (Marquette Project), “A”, 5%, 3/01/2030		40,000		43,455
Indiana Finance Authority Rev. (Marquette Project), “A”, 5%, 3/01/2039		100,000		107,503
Indiana Finance Authority Rev. (Ohio River Bridges East End Crossing Project), “A”, 5%, 7/01/2040		350,000		381,080
Indiana Finance Authority Rev. (Ohio River Bridges East End Crossing Project), “A”, 5%, 7/01/2044		365,000		396,587
Indiana Finance Authority Rev. (State Revolving Fund Program), “A”, 5%, 2/01/2029 (Prerefunded 2/01/2022)		1,000,000		1,092,230
Lake County, IN, Hammond Multi-School Building Corp., 5%, 7/15/2032		25,000		29,644
Lake County, IN, Hammond Multi-School Building Corp., 5%, 7/15/2033		20,000		23,629
Lake County, IN, Hammond Multi-School Building Corp., 5%, 7/15/2035		25,000		29,289
Lake County, IN, Hammond Multi-School Building Corp., 5%, 7/15/2038		75,000		86,663

13

Portfolio of Investments (unaudited) – continued

Issuer	Shares/Par		Value ($)
Municipal Bonds - continued
Indiana - continued
University of Southern Indiana Rev. (Student Fee), “J”, ASSD GTY, 5.75%, 10/01/2028 (Prerefunded 10/01/2019)	$	210,000	$	212,938
Valparaiso, IN, Exempt Facilities Rev. (Pratt Paper LLC Project), 7%, 1/01/2044		110,000		128,850
			$	2,863,483
Iowa - 0.3%
Iowa Student Loan Liquidity Corp. Rev., “A”, 3.75%, 12/01/2033	$	250,000	$	259,405
Iowa Student Loan Liquidity Corp. Rev.,“A-1”, 4.625%, 12/01/2019		15,000		15,154
Iowa Student Loan Liquidity Corp. Rev.,“A-1”, 4.875%, 12/01/2020		5,000		5,135
Iowa Student Loan Liquidity Corp. Rev.,“A-2”, 5.5%, 12/01/2025		10,000		10,446
Iowa Student Loan Liquidity Corp. Rev.,“A-2”, 5.6%, 12/01/2026		15,000		15,679
Iowa Student Loan Liquidity Corp. Rev.,“A-2”, 5.75%, 12/01/2028		25,000		26,129
			$	331,948
Kansas - 1.5%
Coffeyville, KS, Electric Utility System Rev., “B”, NATL, 5%, 6/01/2038	$	300,000	$	337,431
Coffeyville, KS, Electric Utility System Rev., “B”, NATL, 5%, 6/01/2042		100,000		111,929
Hutchinson, KS, Hospital Facilities Rev. (Hutchinson Regional Medical Center, Inc.), 5%, 12/01/2036		45,000		49,916
Hutchinson, KS, Hospital Facilities Rev. (Hutchinson Regional Medical Center, Inc.), 5%, 12/01/2041		45,000		49,376
University of Kansas Hospital Authority, Health Facilities Rev. (University of Kansas Health System), “A”, 5%, 9/01/2048		540,000		640,305
Wyandotte County/Kansas City, KS, Unified Government Community Improvement District Sales Tax Rev. (Legends Apartments Garage & West Lawn Project), 4.5%, 6/01/2040		20,000		20,563
Wyandotte County/Kansas City, KS, Unified Government Utility System Improvement Rev., “A”, 5%, 9/01/2044		195,000		218,377
			$	1,427,897
Kentucky - 2.6%
Commonwealth of Kentucky State Property & Buildings Commission Rev. (Project No. 119), BAM, 5%, 5/01/2032	$	35,000	$	42,347
Commonwealth of Kentucky State Property & Buildings Commission Rev. (Project No. 119), BAM, 5%, 5/01/2033		35,000		42,222
Commonwealth of Kentucky State Property & Buildings Commission Rev. (Project No. 119), BAM, 5%, 5/01/2034	��	40,000		48,070
Kentucky Economic Development Finance Authority Hospital Rev. (Baptist Healthcare System), “B”, 5%, 8/15/2037		35,000		40,050
Kentucky Economic Development Finance Authority Hospital Rev. (Baptist Healthcare System), “B”, 5%, 8/15/2041		230,000		260,399

14

Portfolio of Investments (unaudited) – continued

Issuer	Shares/Par		Value ($)
Municipal Bonds - continued
Kentucky - continued
Kentucky Economic Development Finance Authority Hospital Rev. (Baptist Healthcare System), “B”, 5%, 8/15/2046	$	135,000	$	152,250
Kentucky Economic Development Finance Authority Hospital Rev. (Owensboro Medical Health System, Inc.), “A”, 6.375%, 6/01/2040 (Prerefunded 6/01/2020)		440,000		461,080
Kentucky Higher Education Student Loan Corp. Rev.,Tax-Exempt,“B-1”, 5%, 6/01/2036		250,000		281,263
Kentucky Turnpike Authority, Economic Development Rev., “A”, 5%, 7/01/2030		1,000,000		1,065,510
University of Kentucky, General Receipts, “A”, 5%, 4/01/2036		110,000		125,111
			$	2,518,302
Louisiana - 2.3%
Jefferson Parish, LA, Hospital Service District No. 2 Hospital Rev. (East Jefferson General Hospital), 6.25%, 7/01/2031	$	470,000	$	468,825
Louisiana Local Government, Environmental Facilities & Community Development Authority Rev. (St. James Place of Baton Rouge Project), “A”, 6.25%, 11/15/2045		240,000		266,957
Louisiana Public Facilities Authority Hospital Rev. (Lake Charles Memorial Hospital), 6.375%, 12/01/2034		290,000		300,164
Louisiana Public Facilities Authority Rev. (Loyola University Project), Convertible Capital Appreciation, 0% to 10/01/2023, 5.25% to 10/01/2046		345,000		326,843
New Orleans, LA, Sewerage Service Rev., 5%, 12/01/2040		65,000		72,728
New Orleans, LA, Sewerage Service Rev., 5%, 6/01/2045		185,000		206,996
New Orleans, LA, Sewerage Service Rev., 5%, 12/01/2045		85,000		94,776
St. Charles Parish, LA, Gulf Zone Opportunity Zone Rev. (Valero Energy Corp.), 4%, 12/01/2040 (Put Date 6/01/2022)		480,000		506,597
			$	2,243,886
Maryland - 1.4%
Baltimore, MD, Convention Center Hotel Rev., 5%, 9/01/2039	$	100,000	$	113,642
Baltimore, MD, Convention Center Hotel Rev., 5%, 9/01/2042		90,000		101,650
Baltimore, MD, Convention Center Hotel Rev., 5%, 9/01/2046		145,000		163,322
Maryland Economic Development Corp., Subordinate Parking Facilities Rev. (Baltimore City Project), “C”, 4%, 6/01/2038		10,000		10,228
Maryland Economic Development Corp., Subordinate Parking Facilities Rev. (Baltimore City Project), “C”, 4%, 6/01/2048		20,000		20,610
Maryland Economic Development Corp., Subordinate Parking Facilities Rev. (Baltimore City Project), “C”, 4%, 6/01/2058		75,000		75,169
Maryland Health & Higher Educational Facilities Authority Rev. (Charlestown Community), 6.25%, 1/01/2041 (Prerefunded 1/01/2021)		190,000		203,870

15

Portfolio of Investments (unaudited) – continued

Issuer	Shares/Par		Value ($)
Municipal Bonds - continued
Maryland - continued
Maryland Health & Higher Educational Facilities Authority Rev. (Doctors Community Hospital), “A”, 5%, 7/01/2033	$	100,000	$	113,864
Maryland Health & Higher Educational Facilities Authority Rev. (Doctors Community Hospital), “A”, 5%, 7/01/2034		65,000		73,654
Maryland Health & Higher Educational Facilities Authority Rev. (Doctors Community Hospital), “A”, 5%, 7/01/2038		280,000		312,415
Prince George’s County, MD, Special Obligation Bonds (Westphalia Town Center Project), 5.25%, 7/01/2048		100,000		106,455
Rockville, MD, Mayor & Council Economic Development Refunding Rev. (Ingleside at King Farm Project),“A-1”, 5%, 11/01/2037		10,000		10,893
Rockville, MD, Mayor & Council Economic Development Rev. (Ingleside at King Farm Project), “B”, 5%, 11/01/2042		15,000		16,208
Rockville, MD, Mayor & Council Economic Development Rev. (Ingleside at King Farm Project), “B”, 5%, 11/01/2047		15,000		16,162
			$	1,338,142
Massachusetts - 20.5%
Boston, MA, Metropolitan Transit Parking Corp., Systemwide Parking Rev., 5.25%, 7/01/2036	$	285,000	$	304,816
Commonwealth of Massachusetts Transportation Fund Rev. (Accelerated Bridge Program), “A”, 5%, 6/01/2038 (Prerefunded 6/01/2021)		1,000,000		1,070,470
Massachusetts Bay Transportation Authority, Sales Tax Rev.,“A-1”, 5.25%, 7/01/2029		350,000		465,588
Massachusetts College Building Authority Rev., “A”, 5%, 5/01/2031		190,000		212,253
Massachusetts Development Finance Agency Refunding Rev. (Suffolk University), 5%, 7/01/2035		25,000		28,955
Massachusetts Development Finance Agency Rev. (Atrius Health Issue), “A”, 5%, 6/01/2039		35,000		41,265
Massachusetts Development Finance Agency Rev. (Atrius Health Issue), “A”, 4%, 6/01/2049		30,000		31,541
Massachusetts Development Finance Agency Rev. (Milford Regional Medical Center), “F”, 5.75%, 7/15/2043		40,000		43,560
Massachusetts Development Finance Agency Rev. (Newbridge on the Charles, Inc.), 5%, 10/01/2057		100,000		108,520
Massachusetts Development Finance Agency Rev. (North Hill Communities), “A”, 6.5%, 11/15/2043 (Prerefunded 11/15/2023)		100,000		121,000
Massachusetts Development Finance Agency Rev. (Suffolk University), 5%, 7/01/2033		35,000		40,833
Massachusetts Development Finance Agency Rev. (Suffolk University), 5%, 7/01/2034		30,000		34,877
Massachusetts Development Finance Agency Rev. (UMass Memorial Health Care Obligated Group), “I”, 5%, 7/01/2036		120,000		137,501

16

Portfolio of Investments (unaudited) – continued

Issuer	Shares/Par		Value ($)
Municipal Bonds - continued
Massachusetts - continued
Massachusetts Development Finance Agency Rev. (UMass Memorial Health Care Obligated Group), “K”, 5%, 7/01/2038	$	80,000	$	91,342
Massachusetts Development Finance Agency Rev. (Wellforce), “A”, 4%, 7/01/2044		1,675,000		1,774,729
Massachusetts Development Finance Agency Rev. (Wellforce), “A”, 5%, 7/01/2044		35,000		40,723
Massachusetts Development Finance Agency Rev. (Williams College), “P”, 5%, 7/01/2043		1,000,000		1,116,830
Massachusetts Educational Financing Authority, Education Loan Rev., “A”, 4.25%, 1/01/2030		60,000		64,081
Massachusetts Educational Financing Authority, Education Loan Rev., “A”, 4.25%, 1/01/2031		40,000		42,519
Massachusetts Educational Financing Authority, Education Loan Rev., “J”, 3.5%, 7/01/2033		95,000		97,627
Massachusetts Educational Financing Authority, Education Loan Rev., “J”, 3.5%, 7/01/2033 (u)		11,840,000		12,167,376
Massachusetts Educational Financing Authority, Education Loan Rev., “K”, 5.25%, 7/01/2029		185,000		199,371
Massachusetts Port Authority Rev., “A”, 5%, 7/01/2037		35,000		38,026
Massachusetts Port Authority Special Facilities Rev. (ConRAC Project), “A”, 5.125%, 7/01/2041		40,000		42,566
Massachusetts School Building Authority, Dedicated Sales Tax Rev., “B”, 5%, 10/15/2032		720,000		774,230
Massachusetts Water Resources Authority Rev., “B”, AGM, 5.25%, 8/01/2029		600,000		800,478
			$	19,891,077
Michigan - 5.6%
Detroit, MI, Downtown Development Authority Tax Increment Rev. (Catalyst Development), “A”, AGM, 5%, 7/01/2043	$	65,000	$	71,618
Detroit, MI, Water & Sewerage Department, Senior Lien Sewage Disposal System Rev., “A”, 5.25%, 7/01/2039		460,000		500,429
Detroit, MI, Water Supply System Rev., Senior Lien, “A”, 5%, 7/01/2036		25,000		26,282
Detroit, MI, Water Supply System Rev., Senior Lien, “C”, 5%, 7/01/2041		30,000		31,492
Eastern Michigan University Board of Regents, General Rev., “A”, 4%, 3/01/2047		430,000		464,839
Michigan Finance Authority (Detroit Financial Recovery Income Tax Rev.), “F”, 3.875%, 10/01/2023		50,000		52,627
Michigan Finance Authority (Detroit Financial Recovery Income Tax Rev.), “F”, 4%, 10/01/2024		65,000		69,519
Michigan Finance Authority Hospital Rev. (Henry Ford Health System), 3.25%, 11/15/2042		570,000		566,643

17

Portfolio of Investments (unaudited) – continued

Issuer	Shares/Par		Value ($)
Municipal Bonds - continued
Michigan - continued
Michigan Finance Authority Hospital Rev. (Henry Ford Health System), “A”, 4%, 11/15/2050	$	355,000	$	381,469
Michigan Finance Authority Hospital Rev. (Trinity Health Credit Group), 5%, 12/01/2048		150,000		177,598
Michigan Finance Authority Local Government Loan Program Rev. (Detroit Water and Sewerage Department Sewage Disposal System Rev. Refunding Second Lien Local Project), “C”, 5%, 7/01/2033		65,000		74,977
Michigan Finance Authority Local Government Loan Program Rev. (Detroit Water and Sewerage Department Sewage Disposal System Rev. Refunding Second Lien Local Project), “C”, 5%, 7/01/2034		150,000		172,548
Michigan Finance Authority Local Government Loan Program Rev. (Detroit Water and Sewerage Department Sewage Disposal System Rev. Refunding Second Lien Local Project), “C”, 5%, 7/01/2035		100,000		114,751
Michigan Finance Authority Local Government Loan Program Rev. (Detroit Water and Sewerage Department Sewage Disposal System Rev. Senior Lien Local Project),“C-1”, 5%, 7/01/2044		175,000		188,135
Michigan Finance Authority Local Government Loan Program Rev. (Detroit Water and Sewerage Department Sewage Disposal System Rev. Senior Lien Local Project),“C-2”, 5%, 7/01/2044		135,000		145,091
Michigan Finance Authority Local Government Loan Program Rev. (Detroit Water and Sewerage Department Sewage Disposal System Rev. Senior Lien Local Project),“C-6”, 5%, 7/01/2033		220,000		249,088
Michigan Finance Authority Local Government Loan Program Rev. (Detroit Water and Sewerage Department Water Supply System Rev. Refunding Local Project),“D-2”, 5%, 7/01/2034		65,000		75,009
Michigan Finance Authority Rev. (Trinity Health Corp.), 5%, 12/01/2035		750,000		807,180
Royal Oak, MI, Hospital Finance Authority Rev. (William Beaumont Hospital), 5%, 9/01/2039		545,000		603,250
Wayne County, MI, Airport Authority Rev. (Detroit Metropolitan Wayne County Airport), “D”, AGM, 5%, 12/01/2040		570,000		661,468
			$	5,434,013
Minnesota - 0.4%
Duluth, MN, Economic Development Authority, Health Care Facilities Rev. (Essentia Health), “A”, 4.25%, 2/15/2043	$	60,000	$	65,183
Duluth, MN, Economic Development Authority, Health Care Facilities Rev. (Essentia Health), “A”, 5%, 2/15/2043		105,000		121,590
Duluth, MN, Economic Development Authority, Health Care Facilities Rev. (Essentia Health), “A”, 4.25%, 2/15/2048		60,000		64,947
Duluth, MN, Economic Development Authority, Health Care Facilities Rev. (Essentia Health), “A”, 5%, 2/15/2048		85,000		98,152

18

Portfolio of Investments (unaudited) – continued

Issuer	Shares/Par		Value ($)
Municipal Bonds - continued
Minnesota - continued
Minneapolis & St. Paul, MN, Housing Authority Rev. (City Living),“A-2”, GNMA, 5%, 12/01/2038	$	5,947	$	5,950
			$	355,822
Mississippi - 0.3%
Mississippi Development Bank Special Obligation (City of Jackson Water and Sewer System Rev. Bond Project), AGM, 6.875%, 12/01/2040	$	90,000	$	107,161
University of Southern Mississippi Educational Building Corp. Rev. (Campus Facilities Project), 5.25%, 9/01/2032 (Prerefunded 9/01/2019)		190,000		191,773
			$	298,934
Missouri - 0.3%
Missouri Health & Educational Facilities Authority Rev. (A.T. Still University Health Services), 5%, 10/01/2039	$	55,000	$	61,146
Missouri Health & Educational Facilities Authority Rev. (SSM Health Care), “A”, 5%, 6/01/2031		205,000		233,678
			$	294,824
Nebraska - 1.1%
Central Plains Energy Project, NE, Gas Project Rev. (Project No. 3), “A”, 5%, 9/01/2036	$	105,000	$	133,305
Central Plains Energy Project, NE, Gas Project Rev. (Project No. 3), “A”, 5%, 9/01/2042		210,000		273,907
Douglas County, NE, Educational Facilities Rev. (Creighton University), “A”, 5.875%, 7/01/2040 (Prerefunded 7/01/2020)		645,000		675,044
			$	1,082,256
Nevada - 1.1%
Las Vegas Valley, NV, Water District, “C”, 5%, 6/01/2029	$	755,000	$	805,449
Reno, NV, Sales Tax Rev. (Retrac-Reno Transportation Rail Access Corridor Project), “B”, AGM, 5%, 6/01/2033		5,000		5,992
Reno, NV, Sales Tax Rev. (Retrac-Reno Transportation Rail Access Corridor Project), “B”, AGM, 5%, 6/01/2038		5,000		5,889
Reno, NV, Sales Tax Rev. (Retrac-Reno Transportation Rail Access Corridor Project), “B”, AGM, 4%, 6/01/2048		20,000		21,279
Reno, NV, Sales Tax Rev. (Retrac-Reno Transportation Rail Access Corridor Project), “B”, AGM, 4.125%, 6/01/2058		25,000		26,399
Reno, NV, Sales Tax Rev. (Retrac-Reno Transportation Rail Access Corridor Project), Capital Appreciation, “C”, 0%, 7/01/2058		1,500,000		195,090
			$	1,060,098

19

Portfolio of Investments (unaudited) – continued

Issuer	Shares/Par		Value ($)
Municipal Bonds - continued
New Hampshire - 0.2%
New Hampshire Health & Education Facilities Authority Rev. (Memorial Hospital), 5.5%, 6/01/2031	$	100,000	$	117,395
New Hampshire Health & Education Facilities Authority Rev. (Memorial Hospital), 5.5%, 6/01/2036		105,000		121,548
			$	238,943
New Jersey - 3.2%
Atlantic City, NJ, Tax Appeal Refunding Bonds (Qualified Pursuant to the Provisions of the Municipal Qualified Bond Act), “B”, AGM, 5%, 3/01/2032	$	85,000	$	100,699
Atlantic City, NJ, Tax Appeal Refunding Bonds (Qualified Pursuant to the Provisions of the Municipal Qualified Bond Act), “B”, AGM, 5%, 3/01/2037		80,000		93,372
New Jersey Building Authority Rev., Unrefunded Balance, “A”, BAM, 5%, 6/15/2029		30,000		35,187
New Jersey Economic Development Authority Rev. (Goethals Bridge Replacement Project), 5.5%, 1/01/2027		40,000		45,961
New Jersey Economic Development Authority Rev. (Goethals Bridge Replacement Project), 5%, 1/01/2028		40,000		44,983
New Jersey Economic Development Authority Rev. (Goethals Bridge Replacement Project), 5.375%, 1/01/2043		225,000		251,660
New Jersey Economic Development Authority Rev. (Goethals Bridge Replacement Project), AGM, 5%, 1/01/2031		115,000		128,355
New Jersey Economic Development Authority Rev. (Goethals Bridge Replacement Project), AGM, 5.125%, 1/01/2039		70,000		78,301
New Jersey Economic Development Authority Rev. (Goethals Bridge Replacement Project), AGM, 5.125%, 7/01/2042		35,000		38,852
New Jersey Economic Development Authority Rev., School Facilities Construction, “DDD”, 5%, 6/15/2034		55,000		62,673
New Jersey Economic Development Authority Rev., School Facilities Construction, “DDD”, 5%, 6/15/2035		40,000		45,440
New Jersey Economic Development Authority Rev., School Facilities Construction, “DDD”, 5%, 6/15/2042		240,000		268,531
New Jersey Economic Development Authority, Special Facilities Rev. (Continental Airlines, Inc.), 5.25%, 9/15/2029		260,000		285,062
New Jersey Economic Development Authority, Special Facilities Rev. (Continental Airlines, Inc.), “A”, 5.625%, 11/15/2030		40,000		45,896
New Jersey Economic Development Authority, Special Facilities Rev. (Continental Airlines, Inc.), “B”, 5.625%, 11/15/2030		35,000		40,159
New Jersey Economic Development Authority, State Lease Rev. (Juvenile Justice Commission Facilities Project), “C”, 5%, 6/15/2042		150,000		168,795
New Jersey Health Care Facilities, Financing Authority Rev. (University Hospital), “A”, AGM, 5%, 7/01/2046		360,000		402,847

20

Portfolio of Investments (unaudited) – continued

Issuer	Shares/Par		Value ($)
Municipal Bonds - continued
New Jersey - continued
New Jersey Tobacco Settlement Financing Corp., “A”, 5%, 6/01/2035	$	550,000	$	643,214
New Jersey Transportation Trust Fund Authority, Federal Highway Reimbursement Rev., “A”, 5%, 6/15/2029		150,000		174,246
New Jersey Transportation Trust Fund Authority, Federal Highway Reimbursement Rev., “A”, 5%, 6/15/2031		100,000		114,981
			$	3,069,214
New Mexico - 0.4%
Farmington, NM, Pollution Control Rev. (Public Service New Mexico), “D”, 5.9%, 6/01/2040	$	400,000	$	415,280
New York - 13.2%
Brooklyn, NY, Arena Local Development Corp. (Barclays Center Project), 6%, 7/15/2030 (Prerefunded 1/15/2020)	$	200,000	$	205,800
Build NYC Resource Corp. Rev. (Albert Einstein School of Medicine, Inc.), 5.5%, 9/01/2045		310,000		343,012
Glen Cove, NY, Local Economic Assistance Corp. (Garvies Point Public Improvement Project), Capital Appreciation, “B”, 0%, 1/01/2045		120,000		39,032
Hempstead, NY, Local Development Corp. Rev. (Hofstra University Project), 5%, 7/01/2025		130,000		138,765
Hempstead, NY, Local Development Corp. Rev. (Hofstra University Project), 5%, 7/01/2026		95,000		101,344
Hudson Yards, NY, Infrastructure Corp. Rev., “A”, 5.75%, 2/15/2047 (Prerefunded 2/15/2021)		215,000		230,966
Hudson Yards, NY, Infrastructure Corp. Rev., “A”, Unrefunded Balance, 5.75%, 2/15/2047		135,000		144,114
New York Environmental Facilities Corp., State Revolving Funds Rev., “C”, 5%, 5/15/2041		255,000		271,190
New York Liberty Development Corp. Rev. (Goldman Sachs Headquarters), 5.25%, 10/01/2035		1,725,000		2,270,876
New York Liberty Development Corp., Liberty Rev. (3 World Trade Center Project), “2”, 5.375%, 11/15/2040		215,000		239,452
New York Liberty Development Corp., Liberty Rev. (4 World Trade Center Project), 5%, 11/15/2031		200,000		216,506
New York Liberty Development Corp., Liberty Rev. (4 World Trade Center Project), 5%, 11/15/2044		500,000		536,220
New York Liberty Development Corp., Liberty Rev. (One Bryant Park LLC), 6.375%, 7/15/2049		435,000		447,711
New York Power Authority Rev., “A”, 5%, 11/15/2038		1,000,000		1,077,660
New York Transportation Development Corp., Special Facilities Rev. (Delta Airlines, Inc. LaGuardia Airport Terminals C&D Redevelopment Project), 5%, 1/01/2032		215,000		254,504

21

Portfolio of Investments (unaudited) – continued

Issuer	Shares/Par		Value ($)
Municipal Bonds - continued
New York - continued
New York Transportation Development Corp., Special Facilities Rev. (Delta Airlines, Inc. LaGuardia Airport Terminals C&D Redevelopment Project), 5%, 1/01/2033	$	125,000	$	147,516
New York Transportation Development Corp., Special Facilities Rev. (Delta Airlines, Inc. LaGuardia Airport Terminals C&D Redevelopment Project), 5%, 1/01/2034		100,000		117,617
New York Transportation Development Corp., Special Facilities Rev. (Delta Airlines, Inc. LaGuardia Airport Terminals C&D Redevelopment Project), 4%, 1/01/2036		100,000		106,587
New York, NY, Municipal Water Finance Authority, Water & Sewer System Rev., 5%, 6/15/2047 (Prerefunded 6/15/2023)		470,000		537,671
New York, NY, Municipal Water Finance Authority, Water & Sewer System Rev., “AA”, 5%, 6/15/2034 (Prerefunded 6/15/2021)		1,610,000		1,729,993
New York, NY, Municipal Water Finance Authority, Water & Sewer System Rev., Unrefunded Balance, 5%, 6/15/2047		530,000		589,620
Port Authority of NY & NJ, Special Obligation Rev. (JFK International Air Terminal LLC), 6%, 12/01/2036		195,000		206,526
Port Authority of NY & NJ, Special Obligation Rev. (JFK International Air Terminal LLC), 6%, 12/01/2042		225,000		238,208
Triborough Bridge & Tunnel Authority Rev., NY, Capital Appreciation, “A”, 0%, 11/15/2029		1,125,000		868,027
Utility Debt Securitization Authority Restructuring Rev., NY, “E”, 5%, 12/15/2041		1,500,000		1,704,900
			$	12,763,817
North Carolina - 2.7%
Durham, NC, Durham Housing Authority Rev. (Magnolia Pointe Apartments), 5.65%, 2/01/2038 (Prerefunded 1/31/2023)	$	338,900	$	385,576
North Carolina Turnpike Authority, Monroe Connector System State Appropriation Rev., 5%, 7/01/2036		2,000,000		2,127,660
University of North Carolina, Greensboro, Rev., 5%, 4/01/2039		105,000		119,179
			$	2,632,415
Ohio - 4.2%
Bowling Green, OH, Student Housing Rev. (State University Project), 6%, 6/01/2045 (Prerefunded 6/01/2020)	$	285,000	$	297,751
Butler County, OH, Hospital Facilities Rev. (UC Health), 5.75%, 11/01/2040 (Prerefunded 11/01/2020)		105,000		111,133
Cleveland-Cuyahoga County, OH, Port Authority Development Rev. (Flats East Development Project), “B”, 7%, 5/15/2040		95,000		101,457
Cuyahoga County, OH, Hospital Rev. (Metrohealth System), 4.75%, 2/15/2047		220,000		232,903
Cuyahoga County, OH, Hospital Rev. (Metrohealth System), 5.5%, 2/15/2052		50,000		56,960

22

Portfolio of Investments (unaudited) – continued

Issuer	Shares/Par		Value ($)
Municipal Bonds - continued
Ohio - continued
Cuyahoga County, OH, Hospital Rev. (Metrohealth System), 5.5%, 2/15/2057	$	530,000	$	601,470
Franklin County, OH, Hospital Facilities Rev. (OhioHealth Corp.), “A”, 4%, 5/15/2047		160,000		172,802
Lake County, OH, Hospital Facilities Rev., 6%, 8/15/2043		40,000		40,130
Miami County, OH, Hospital Facilities Rev., “A”, 5%, 8/01/2049		405,000		469,743
Ohio Hospital Facilities Rev. (Cleveland Clinic Health System), “B”, 4%, 1/01/2046		120,000		131,221
Ohio Tax Exempt Private Activity (Portsmouth Bypass Project), AGM, 5%, 12/31/2035		395,000		447,729
Southeastern Ohio Port Authority, Hospital Facilities Improvement Rev. (Memorial Health System Obligated Group Project), 5.5%, 12/01/2029		10,000		11,310
Southeastern Ohio Port Authority, Hospital Facilities Improvement Rev. (Memorial Health System Obligated Group Project), 5%, 12/01/2035		60,000		64,788
Southeastern Ohio Port Authority, Hospital Facilities Improvement Rev. (Memorial Health System Obligated Group Project), 5%, 12/01/2043		75,000		78,082
Southeastern Ohio Port Authority, Hospital Facilities Improvement Rev. (Memorial Health System Obligated Group Project), 5.5%, 12/01/2043		90,000		96,618
Summit County, OH, Port Authority Building Rev. (Flats East Development Recovery Zone Facility Bonds), 6.875%, 5/15/2040		35,000		37,317
Toledo Lucas County, OH, Authority Port Rev., Facilities (CSX, Inc. Project), 6.45%, 12/15/2021		1,000,000		1,104,170
			$	4,055,584
Oklahoma - 1.2%
Catoosa, OK, Industrial Authority Sales Tax Rev., 4%, 10/01/2028	$	15,000	$	15,402
Oklahoma Development Finance Authority, Health System Rev. (OU Medicine Project), “B”, 5%, 8/15/2029		5,000		6,028
Oklahoma Development Finance Authority, Health System Rev. (OU Medicine Project), “B”, 5%, 8/15/2033		35,000		41,216
Oklahoma Development Finance Authority, Health System Rev. (OU Medicine Project), “B”, 5%, 8/15/2038		50,000		57,700
Oklahoma Development Finance Authority, Health System Rev. (OU Medicine Project), “B”, 5.25%, 8/15/2043		55,000		64,096
Oklahoma Development Finance Authority, Health System Rev. (OU Medicine Project), “B”, 5.25%, 8/15/2048		50,000		57,995
Tulsa, OK, Airport Improvement Trust Rev., “A”, 5%, 6/01/2045		55,000		60,333
Tulsa, OK, Industrial Authority Rev. (University of Tulsa), 6%, 10/01/2027		535,000		542,169

23

Portfolio of Investments (unaudited) – continued

Issuer	Shares/Par		Value ($)
Municipal Bonds - continued
Oklahoma - continued
Tulsa, OK, Municipal Airport Trust Rev. (American Airlines, Inc.), “B”, 5.5%, 6/01/2035	$	140,000	$	152,282
Tulsa, OK, Municipal Airport Trust Rev. (American Airlines, Inc.), “B”, 5.5%, 12/01/2035		170,000		184,975
			$	1,182,196
Oregon - 0.1%
Forest Grove, OR, Campus Improvement Rev. (Pacific University Project), “A”, 5%, 5/01/2036	$	95,000	$	104,824
Pennsylvania - 7.7%
Allegheny County, PA, Hospital Development Authority Rev. (Allegheny Health Network Obligated Group), “A”, 4%, 4/01/2044	$	600,000	$	641,478
Commonwealth of Pennsylvania, Tobacco Master Settlement Financing Authority Rev., 5%, 6/01/2032		70,000		84,480
Commonwealth of Pennsylvania, Tobacco Master Settlement Financing Authority Rev., 5%, 6/01/2033		60,000		72,144
Commonwealth of Pennsylvania, Tobacco Master Settlement Financing Authority Rev., 5%, 6/01/2034		30,000		35,932
Cumberland County, PA, Municipal Authority Rev. (Asbury Atlantic, Inc.), 6%, 1/01/2040		105,000		106,918
Dallas, PA, Municipal Authority, University Rev. (Misericordia University Project), 5%, 5/01/2029		80,000		87,288
Dallas, PA, Municipal Authority, University Rev. (Misericordia University Project), 5%, 5/01/2048		70,000		76,819
East Hempfield Township, PA, Industrial Development Authority Rev. (Student Services, Inc., Student Housing Project at Millersville University of Pennsylvania), 5%, 7/01/2030		25,000		27,495
East Hempfield Township, PA, Industrial Development Authority Rev. (Student Services, Inc., Student Housing Project at Millersville University of Pennsylvania), 5%, 7/01/2035		35,000		37,930
East Hempfield Township, PA, Industrial Development Authority Rev. (Student Services, Inc., Student Housing Project at Millersville University of Pennsylvania), 5%, 7/01/2039		35,000		37,153
East Hempfield Township, PA, Industrial Development Authority Rev. (Student Services, Inc., Student Housing Project at Millersville University of Pennsylvania), 5%, 7/01/2046		20,000		21,117
Erie, PA, City School District General Obligation, “A”, AGM, 5%, 4/01/2034		30,000		36,412
Lehigh County, PA, Water and Sewer Authority Rev. (Allentown Concession), “A”, 5%, 12/01/2043		900,000		1,003,734
Lehigh County, PA, Water and Sewer Authority Rev. (Allentown Concession), Capital Appreciation, “B”, 0%, 12/01/2036		940,000		523,044

24

Portfolio of Investments (unaudited) – continued

Issuer	Shares/Par		Value ($)
Municipal Bonds - continued
Pennsylvania - continued
Luzerne County, PA, “A”, AGM, 5%, 11/15/2029	$	145,000	$	169,396
Luzerne County, PA, Wilkes-Barre Area School District, General Obligation, BAM, 5%, 4/15/2059		35,000		40,846
Montgomery County, PA, Industrial Development Authority Health System Rev. (Albert Einstein Healthcare Network Issue), “A”, 5.25%, 1/15/2036		655,000		727,030
Montgomery County, PA, Industrial Development Authority Rev. (Whitemarsh Continuing Care Retirement Community Project), 5.375%, 1/01/2050		90,000		92,237
Pennsylvania Economic Development Financing Authority, Sewer Sludge Disposal Rev. (Philadelphia Biosolids Facility), 6.25%, 1/01/2032		260,000		265,291
Pennsylvania Higher Educational Facilities Authority Rev. (East Stroudsburg University), 5%, 7/01/2042		200,000		203,238
Pennsylvania Higher Educational Facilities Authority Rev. (Edinboro University Foundation), 5.8%, 7/01/2030 (Prerefunded 7/01/2020)		65,000		67,940
Pennsylvania Higher Educational Facilities Authority Rev. (Shippensburg University Student Services, Inc. Housing Project), 6.25%, 10/01/2043 (Prerefunded 10/01/2021)		110,000		121,892
Pennsylvania Higher Educational Facilities Authority Rev. (Shippensburg University Student Services, Inc. Housing Project), 5%, 10/01/2044 (Prerefunded 10/01/2022)		115,000		127,965
Philadelphia, PA, Authority for Industrial Development Rev. (Philadelphia Performing Arts Charter School Project), 6.5%, 6/15/2033		180,000		185,306
Philadelphia, PA, Authority for Industrial Development Rev. (Philadelphia Performing Arts Charter School Project), 6.75%, 6/15/2043		140,000		144,133
Philadelphia, PA, Authority for Industrial Development Rev. (Tacony Academy Charter School Project),“A-1”, 7%, 6/15/2043		100,000		110,593
Philadelphia, PA, Authority for Industrial Development Rev. (Thomas Jefferson University), “A”, 5%, 9/01/2035		65,000		76,749
Philadelphia, PA, Authority for Industrial Development Rev. (Thomas Jefferson University), “A”, 5%, 9/01/2042		645,000		750,716
Philadelphia, PA, Water & Wastewater Rev., “A”, 5%, 1/01/2036		1,000,000		1,044,870
Pittsburgh, PA, Urban Redevelopment Authority Rev., “C”, GNMA, 4.8%, 4/01/2028		305,000		306,104
State Public School Building Authority, PA, School Lease Rev. (School District of Philadelphia Project), 5%, 4/01/2028		140,000		151,561
West Shore, PA, Area Authority Rev. (Messiah Village Project), “A”, 5%, 7/01/2030		30,000		32,511
West Shore, PA, Area Authority Rev. (Messiah Village Project), “A”, 5%, 7/01/2035		35,000		37,435
			$	7,447,757

25

Portfolio of Investments (unaudited) – continued

Issuer	Shares/Par		Value ($)
Municipal Bonds - continued
Puerto Rico - 10.3%
Commonwealth of Puerto Rico Aqueduct & Sewer Authority Rev., “A”, ASSD GTY, 5%, 7/01/2028	$	150,000	$	152,581
Commonwealth of Puerto Rico Highway & Transportation Authority Rev., “CC”, AGM, 5.5%, 7/01/2029		50,000		55,879
Commonwealth of Puerto Rico Highway & Transportation Authority Rev., “CC”, AGM, 5.25%, 7/01/2032		45,000		49,426
Commonwealth of Puerto Rico Highway & Transportation Authority Rev., “CC”, AGM, 5.25%, 7/01/2033		135,000		148,260
Commonwealth of Puerto Rico Highway & Transportation Authority Rev., “CC”, AGM, 5.25%, 7/01/2036		185,000		201,678
Commonwealth of Puerto Rico Highway & Transportation Authority Rev., “D”, AGM, 5%, 7/01/2032		300,000		303,750
Commonwealth of Puerto Rico Highway & Transportation Authority Rev., “J”, NATL, 5%, 7/01/2029		20,000		20,167
Commonwealth of Puerto Rico Highway & Transportation Authority Rev., “L”, AAC, 5.25%, 7/01/2038		990,000		1,068,646
Commonwealth of Puerto Rico Highway & Transportation Authority Rev., “L”, ASSD GTY, 5.25%, 7/01/2041		210,000		225,714
Commonwealth of Puerto Rico Highway & Transportation Authority Rev., “L”, NATL, 5.25%, 7/01/2035		165,000		177,368
Commonwealth of Puerto Rico Highway & Transportation Authority Rev., “N”, AAC, 5.25%, 7/01/2030		145,000		158,679
Commonwealth of Puerto Rico Highway & Transportation Authority Rev., “N”, AAC, 5.25%, 7/01/2031		115,000		125,767
Commonwealth of Puerto Rico Highway & Transportation Authority Rev., “N”, ASSD GTY, 5.25%, 7/01/2036		415,000		452,889
Commonwealth of Puerto Rico Highway & Transportation Authority Rev., “N”, NATL, 5.25%, 7/01/2033		145,000		157,035
Commonwealth of Puerto Rico, “A”, NATL, 5.5%, 7/01/2021		45,000		46,803
Commonwealth of Puerto Rico, Public Improvement, “A”, AGM, 5%, 7/01/2035		440,000		458,225
Commonwealth of Puerto Rico, Public Improvement, “A”, NATL, 5.5%, 7/01/2020		440,000		449,988
Commonwealth of Puerto Rico, Public Improvement,“A-4”, AGM, 5.25%, 7/01/2030		65,000		66,345
Puerto Rico Convention Center District Authority, Hotel Occupancy Tax Rev., “A”, AAC, 5%, 7/01/2031		375,000		378,405
Puerto Rico Electric Power Authority Rev., “NN”, NATL, 5.25%, 7/01/2022		115,000		120,372
Puerto Rico Electric Power Authority Rev., “NN”, NATL, 4.75%, 7/01/2033		20,000		19,959
Puerto Rico Electric Power Authority Rev., “PP”, NATL, 5%, 7/01/2022		45,000		45,516

26

Portfolio of Investments (unaudited) – continued

Issuer	Shares/Par		Value ($)
Municipal Bonds - continued
Puerto Rico - continued
Puerto Rico Electric Power Authority Rev., “TT”, 5%, 7/01/2032 (a)(d)	$	685,000	$	546,287
Puerto Rico Electric Power Authority Rev., “UU”, AGM, 5%, 7/01/2022		30,000		30,540
Puerto Rico Electric Power Authority Rev., “VV”, NATL, 5.25%, 7/01/2025		25,000		26,808
Puerto Rico Electric Power Authority Rev., “VV”, NATL, 5.25%, 7/01/2029		125,000		135,689
Puerto Rico Electric Power Authority Rev., “VV”, NATL, 5.25%, 7/01/2030		200,000		216,964
Puerto Rico Electric Power Authority Rev., “VV”, NATL, 5.25%, 7/01/2032		30,000		32,514
Puerto Rico Electric Power Authority Rev., “WW”, 5%, 7/01/2028 (a)(d)		575,000		458,562
Puerto Rico Industrial, Tourist, Educational, Medical & Environmental Control Facilities Financing Authority Rev. (Cogeneration Facilities - AES Puerto Rico Project), 6.625%, 6/01/2026		320,000		319,600
Puerto Rico Industrial, Tourist, Educational, Medical & Environmental Control Facilities Financing Authority, Educational Facilities Rev. (University Plaza Project), NATL, 5%, 7/01/2033		230,000		230,313
Puerto Rico Industrial, Tourist, Educational, Medical & Environmental Control Facilities Financing Authority, Higher Education Rev. (Ana G. Mendez University System Project), 4%, 4/01/2020		10,000		9,957
Puerto Rico Industrial, Tourist, Educational, Medical & Environmental Control Facilities Financing Authority, Higher Education Rev. (Ana G. Mendez University System Project), 5%, 4/01/2021		40,000		40,717
Puerto Rico Industrial, Tourist, Educational, Medical & Environmental Control Facilities Financing Authority, Higher Education Rev. (Ana G. Mendez University System Project), 5.375%, 12/01/2021		20,000		19,968
Puerto Rico Industrial, Tourist, Educational, Medical & Environmental Control Facilities Financing Authority, Higher Education Rev. (Ana G. Mendez University System Project), 5%, 4/01/2022		50,000		50,877
Puerto Rico Industrial, Tourist, Educational, Medical & Environmental Control Facilities Financing Authority, Higher Education Rev. (Ana G. Mendez University System Project), 5%, 3/01/2026		10,000		9,980
Puerto Rico Industrial, Tourist, Educational, Medical & Environmental Control Facilities Financing Authority, Higher Education Rev. (Ana G. Mendez University System Project), 5%, 4/01/2027		155,000		156,364
Puerto Rico Industrial, Tourist, Educational, Medical & Environmental Control Facilities Financing Authority, Higher Education Rev. (Ana G. Mendez University System Project), 5.5%, 12/01/2031		55,000		54,881
Puerto Rico Industrial, Tourist, Educational, Medical & Environmental Control Facilities Financing Authority, Higher Education Rev. (Ana G. Mendez University System Project), 5.125%, 4/01/2032		55,000		55,074

27

Portfolio of Investments (unaudited) – continued

Issuer	Shares/Par		Value ($)
Municipal Bonds - continued
Puerto Rico - continued
Puerto Rico Industrial, Tourist, Educational, Medical & Environmental Control Facilities Financing Authority, Higher Education Rev. (Ana G. Mendez University System Project), 5%, 3/01/2036	$	55,000	$	54,365
Puerto Rico Industrial, Tourist, Educational, Medical & Environmental Control Facilities Financing Authority, Higher Education Rev. (Ana G. Mendez University System Project), 5.375%, 4/01/2042		45,000		45,000
Puerto Rico Infrastructure Financing Authority Special Tax Rev., “C”, AAC, 5.5%, 7/01/2023		220,000		235,814
Puerto Rico Infrastructure Financing Authority Special Tax Rev., “C”, AAC, 5.5%, 7/01/2024		140,000		151,728
Puerto Rico Infrastructure Financing Authority Special Tax Rev., “C”, AAC, 5.5%, 7/01/2027		400,000		443,332
Puerto Rico Infrastructure Financing Authority Special Tax Rev., “C”, AAC, 5.5%, 7/01/2028		60,000		66,786
Puerto Rico Municipal Finance Agency, “A”, AGM, 5%, 8/01/2027		15,000		15,282
Puerto Rico Public Buildings Authority Government Facilities Rev., “I”, ASSD GTY, 5%, 7/01/2036		35,000		35,328
Puerto Rico Public Buildings Authority Government Facilities Rev.,“M-3”, NATL, 6%, 7/01/2027		125,000		127,180
Puerto Rico Public Buildings Authority Government Facilities Rev.,“M-3”, NATL, 6%, 7/01/2028		25,000		25,373
Puerto Rico Public Buildings Authority Rev.,“M-2”, AAC, 10%, 7/01/2035		315,000		330,958
Puerto Rico Sales Tax Financing Corp., Restructured Sales Tax Rev.,“2019A-1”, 4.5%, 7/01/2034		14,000		14,350
Puerto Rico Sales Tax Financing Corp., Restructured Sales Tax Rev.,“2019A-1”, 4.75%, 7/01/2053		414,000		399,382
Puerto Rico Sales Tax Financing Corp., Restructured Sales Tax Rev.,“2019A-1”, 5%, 7/01/2058		94,000		93,441
Puerto Rico Sales Tax Financing Corp., Restructured Sales Tax Rev., Capital Appreciation,“2019A-1”, 0%, 7/01/2027		51,000		38,660
Puerto Rico Sales Tax Financing Corp., Restructured Sales Tax Rev., Capital Appreciation,“2019A-1”, 0%, 7/01/2031		550,000		338,591
Puerto Rico Sales Tax Financing Corp., Restructured Sales Tax Rev., Capital Appreciation,“2019A-1”, 0%, 7/01/2033		487,000		266,852
Puerto Rico Sales Tax Financing Corp., Restructured Sales Tax Rev., Capital Appreciation,“2019A-1”, 0%, 7/01/2046		88,000		20,143
Puerto Rico Sales Tax Financing Corp., Restructured Sales Tax Rev., Capital Appreciation,“2019A-1”, 0%, 7/01/2051		184,000		30,929
University of Puerto Rico Rev., “P”, NATL, 5%, 6/01/2025		30,000		30,309
			$	10,042,350

28

Portfolio of Investments (unaudited) – continued

Issuer	Shares/Par		Value ($)
Municipal Bonds - continued
South Carolina - 2.6%
Columbia, SC, Waterworks and Sewer System Rev., 5%, 2/01/2038	$	1,000,000	$	1,100,730
South Carolina Jobs & Economic Development Authority, Hospital Rev. (Prisma Health Obligated Group), “A”, 5%, 5/01/2048		270,000		312,587
South Carolina Public Service Authority Rev., “A”, 5.125%, 12/01/2043		215,000		237,631
South Carolina Public Service Authority Rev., “B”, 5.125%, 12/01/2043		515,000		569,209
South Carolina Public Service Authority Rev., “C”, 5%, 12/01/2036		260,000		276,193
			$	2,496,350
Tennessee - 4.6%
Chattanooga, TN, Health Educational & Housing Facility Board Rev. (Catholic Health Initiatives), “A”, 5.25%, 1/01/2045	$	820,000	$	904,780
Clarksville, TN, Water, Sewer & Gas Rev., 5%, 2/01/2038 (Prerefunded 2/01/2023)		1,000,000		1,125,640
Knox County, TN, Health, Educational & Housing Facility Board Rev. (University Health Systems, Inc.), 5%, 4/01/2030		50,000		57,335
Knox County, TN, Health, Educational & Housing Facility Board Rev. (University Health Systems, Inc.), 5%, 4/01/2036		35,000		39,306
Metropolitan Government of Nashville & Davidson County, TN, Electric Rev., “A”, 5%, 5/15/2036		1,000,000		1,064,160
Metropolitan Government of Nashville & Davidson County, TN, Health & Educational Facilities Board Rev. (Vanderbilt University Medical Center), “A”, 5%, 7/01/2040		120,000		137,629
Metropolitan Government of Nashville & Davidson County, TN, Health & Educational Facilities Board Rev., Refunding & Improvement (Trevecca Nazarene University Project), 5%, 10/01/2034		5,000		5,795
Metropolitan Government of Nashville & Davidson County, TN, Health & Educational Facilities Board Rev., Refunding & Improvement (Trevecca Nazarene University Project), 5%, 10/01/2039		10,000		11,411
Tennessee Energy Acquisition Corp., Gas Rev., “A”, 5.25%, 9/01/2022		205,000		224,350
Tennessee Energy Acquisition Corp., Gas Rev., “A”, 5.25%, 9/01/2026		610,000		727,974
Tennessee Energy Acquisition Corp., Gas Rev., “C”, 5%, 2/01/2025		185,000		211,707
			$	4,510,087
Texas - 10.7%
Central Texas Regional Mobility Authority Senior Lien Rev., “A”, 5%, 1/01/2045	$	100,000	$	112,121
Clifton, TX, Higher Education Finance Corp. Rev. (Idea Public Schools), 5%, 8/15/2042		330,000		349,302
Clifton, TX, Higher Education Finance Corp. Rev. (Uplift Education), “A”, 6.125%, 12/01/2040 (Prerefunded 12/01/2020)		100,000		106,736

29

Portfolio of Investments (unaudited) – continued

Issuer	Shares/Par		Value ($)
Municipal Bonds - continued
Texas - continued
Clifton, TX, Higher Education Finance Corp. Rev. (Uplift Education), “A”, 6.25%, 12/01/2045 (Prerefunded 12/01/2020)	$	70,000	$	74,843
Conroe, TX, Independent School District, Unlimited Tax School Building and Refunding, PSF, 5%, 2/15/2039		155,000		175,581
Dallas and Fort Worth, TX, International Airport Rev., “A”, 5%, 11/01/2038		335,000		347,676
Dallas, TX, Civic Center Convention Complex Rev., ASSD GTY, 5.25%, 8/15/2034		465,000		468,074
Fort Worth, TX, Independent School District, Unlimited Tax School Building, PSF, 5%, 2/15/2039		315,000		356,674
Gulf Coast, TX, Industrial Development Authority Rev. (CITGO Petroleum Corp.), 8%, 4/01/2028		250,000		251,270
Harris County-Houston, TX, Sports Authority Rev., “C”, 5%, 11/15/2031		90,000		101,881
Harris County-Houston, TX, Sports Authority Rev., “C”, 5%, 11/15/2032		20,000		22,614
Harris County-Houston, TX, Sports Authority Rev., “C”, 5%, 11/15/2033		40,000		45,107
Harris County-Houston, TX, Sports Authority Rev., Capital Appreciation, “A”, AGM, 0%, 11/15/2041		70,000		29,429
Harris County-Houston, TX, Sports Authority Rev., Capital Appreciation, “A”, AGM, 0%, 11/15/2046		175,000		57,363
Houston, TX, Airport System Rev., Subordinate Lien, “A”, 5%, 7/01/2031		140,000		152,104
Houston, TX, Airport System Special Facilities Rev. (United Airlines, Inc. Terminal Improvement Projects),“B-1”, 5%, 7/15/2030		100,000		111,589
Houston, TX, Industrial Development Corp. (United Parcel Service, Inc.), 6%, 3/01/2023		165,000		165,399
Matagorda County, TX, Navigation District No. 1 (Houston Lighting), AAC, 5.125%, 11/01/2028		2,000,000		2,477,360
New Hope, TX, Cultural Education Facilities Finance Corp., Senior Living Rev. (Cardinal Bay, Inc. - Village on the Park/Carriage Inn Project),“A-1”, 5%, 7/01/2031		15,000		17,574
New Hope, TX, Cultural Education Facilities Finance Corp., Senior Living Rev. (Cardinal Bay, Inc. - Village on the Park/Carriage Inn Project),“A-1”, 4%, 7/01/2036		80,000		84,856
New Hope, TX, Cultural Education Facilities Finance Corp., Senior Living Rev. (Cardinal Bay, Inc. - Village on the Park/Carriage Inn Project),“A-1”, 5%, 7/01/2046		160,000		180,891
New Hope, TX, Cultural Education Facilities Finance Corp., Senior Living Rev. (Cardinal Bay, Inc. - Village on the Park/Carriage Inn Project),“A-1”, 5%, 7/01/2051		185,000		208,421

30

Portfolio of Investments (unaudited) – continued

Issuer	Shares/Par		Value ($)
Municipal Bonds - continued
Texas - continued
New Hope, TX, Cultural Education Facilities Finance Corp., Senior Living Rev. (Cardinal Bay, Inc. - Village on the Park/Carriage Inn Project), “B”, 4%, 7/01/2031	$	25,000	$	26,253
New Hope, TX, Cultural Education Facilities Finance Corp., Senior Living Rev. (Cardinal Bay, Inc. - Village on the Park/Carriage Inn Project), “B”, 4.25%, 7/01/2036		35,000		37,015
New Hope, TX, Cultural Education Facilities Finance Corp., Senior Living Rev. (Cardinal Bay, Inc. - Village on the Park/Carriage Inn Project), “B”, 5%, 7/01/2046		100,000		109,576
New Hope, TX, Cultural Education Facilities Finance Corp., Senior Living Rev. (Cardinal Bay, Inc. - Village on the Park/Carriage Inn Project), “B”, 4.75%, 7/01/2051		90,000		96,468
New Hope, TX, Cultural Education Facilities Finance Corp., Student Housing Rev. (CHF - Collegiate Housing Stephenville III LLC - Tarleton State University Project), 5%, 4/01/2030		25,000		27,429
New Hope, TX, Cultural Education Facilities Finance Corp., Student Housing Rev. (CHF - Collegiate Housing Stephenville III LLC - Tarleton State University Project), 5%, 4/01/2035		30,000		32,417
New Hope, TX, Cultural Education Facilities Finance Corp., Student Housing Rev. (CHF - Collegiate Housing Stephenville III LLC - Tarleton State University Project), 5%, 4/01/2047		65,000		69,073
Newark, TX, Higher Education Finance Corp. Rev. (Austin Achieve Public Schools, Inc.), 5%, 6/15/2033		5,000		5,167
Newark, TX, Higher Education Finance Corp. Rev. (Austin Achieve Public Schools, Inc.), 5%, 6/15/2048		5,000		5,106
North Texas Education Finance Corp., Education Rev. (Uplift Education), “A”, 5.125%, 12/01/2042		150,000		158,131
North Texas Tollway Authority Rev., 6%, 1/01/2038 (Prerefunded 1/01/2021)		620,000		663,357
North Texas Tollway Authority Rev. (Special Projects System), “D”, 5%, 9/01/2031 (Prerefunded 9/01/2021)		1,000,000		1,076,850
Red River, TX, Education Finance Corp., Higher Education Rev. (Houston Baptist University Project), 5.5%, 10/01/2046		160,000		181,285
Tarrant County, TX, Cultural Education Facilities Finance Corp. Retirement Facility Rev. (Barton Creek Senior Living Center, Inc., Querencia Project), 5%, 11/15/2035		60,000		59,336
Tarrant County, TX, Cultural Education Facilities Finance Corp. Retirement Facility Rev. (Barton Creek Senior Living Center, Inc., Querencia Project), 5%, 11/15/2040		70,000		68,823
Tarrant County, TX, Cultural Education Facilities Finance Corp. Retirement Facility Rev. (Stayton at Museum Way), 8.25%, 11/15/2044		500,000		450,000

31

Portfolio of Investments (unaudited) – continued

Issuer	Shares/Par		Value ($)
Municipal Bonds - continued
Texas - continued
Tarrant County, TX, Cultural Education Facilities Finance Corp. Retirement Facility Rev. (Trinity Terrace Project),“A-1”, 5%, 10/01/2044	$	60,000	$	64,629
Texas Gas Acquisition & Supply Corp III., Gas Supply Rev., 5%, 12/15/2031		135,000		146,985
Texas Private Activity Surface Transportation Corp., Senior Lien Rev. (NTE Mobility Partners Segments 3 LLC Segments 3A & 3B Facility), 7%, 12/31/2038		115,000		135,445
Texas Private Activity Surface Transportation Corp., Senior Lien Rev. (NTE Mobility Partners Segments 3 LLC Segments 3A & 3B Facility), 6.75%, 6/30/2043		95,000		110,524
Texas Transportation Commission, State Highway 249 System Rev., “A”, 5%, 8/01/2057		165,000		190,078
Texas Transportation Commission, State Highway 249 System Rev., Capital Appreciation, “A”, 0%, 8/01/2037		20,000		9,674
Texas Transportation Commission, State Highway 249 System Rev., Capital Appreciation, “A”, 0%, 8/01/2038		10,000		4,571
Texas Transportation Commission, State Highway 249 System Rev., Capital Appreciation, “A”, 0%, 8/01/2039		15,000		6,489
Texas Transportation Commission, State Highway 249 System Rev., Capital Appreciation, “A”, 0%, 8/01/2040		15,000		6,127
Texas Transportation Commission, State Highway 249 System Rev., Capital Appreciation, “A”, 0%, 8/01/2041		30,000		11,590
Texas Transportation Commission, State Highway 249 System Rev., Capital Appreciation, “A”, 0%, 8/01/2042		40,000		14,622
Texas Transportation Commission, State Highway 249 System Rev., Capital Appreciation, “A”, 0%, 8/01/2043		35,000		12,125
Waco Education Finance Corp. Rev. (Baylor University), 5%, 3/01/2043		675,000		725,578
			$	10,401,588
Utah - 0.5%
Salt Lake City, UT, Salt Lake City International Airport Rev., “A”, 5%, 7/01/2043	$	265,000	$	312,788
Utah Charter School Finance Authority, Charter School Rev. (Da Vinci Academy of Science & Arts), 4%, 4/15/2047		165,000		171,486
			$	484,274
Virginia - 0.5%
Embrey Mill Community Development Authority, VA, Special Assessment Rev., 7.25%, 3/01/2043	$	165,000	$	178,093
Virginia Small Business Financing Authority Rev. (Elizabeth River Crossings Opco LLC Project), 5.5%, 1/01/2042		275,000		298,078
			$	476,171

32

Portfolio of Investments (unaudited) – continued

Issuer	Shares/Par		Value ($)
Municipal Bonds - continued
Washington - 0.4%
Grays Harbor County, WA, Public Hospital District No. 2, Limited Tax General Obligation Refunding, 5%, 12/15/2033	$	80,000	$	88,466
Grays Harbor County, WA, Public Hospital District No. 2, Limited Tax General Obligation Refunding, 5%, 12/15/2038		100,000		108,716
Grays Harbor County, WA, Public Hospital District No. 2, Limited Tax General Obligation Refunding, 5%, 12/15/2048		195,000		208,699
			$	405,881
West Virginia - 0.4%
Monongalia County, WV, Building Commission Improvement Rev. (Monongalia Health System Obligated Group), 5%, 7/01/2029	$	30,000	$	33,407
Monongalia County, WV, Building Commission Improvement Rev. (Monongalia Health System Obligated Group), 5%, 7/01/2030		85,000		94,211
West Virginia Hospital Finance Authority Hospital Rev. (Thomas Health System), 6.5%, 10/01/2038		285,000		211,536
			$	339,154
Wisconsin - 2.7%
Public Finance Authority Student Housing Rev. (Beyond Boone LLC - Appalachian State University Project), “A”, AGM, 5%, 7/01/2044	$	15,000	$	17,354
Public Finance Authority Student Housing Rev. (Beyond Boone LLC - Appalachian State University Project), “A”, AGM, 5%, 7/01/2054		20,000		22,934
Public Finance Authority Student Housing Rev. (Beyond Boone LLC - Appalachian State University Project), “A”, AGM, 5%, 7/01/2058		20,000		22,364
Wisconsin Health & Educational Facilities Authority Rev. (Aspirusm, Inc. Obligated Group), 4%, 8/15/2048		700,000		747,558
Wisconsin Health & Educational Facilities Authority Rev. (Aurora Health Care, Inc.), “A”, 5%, 7/15/2026 (Prerefunded 7/15/2021)		185,000		198,622
Wisconsin Health & Educational Facilities Authority Rev. (Aurora Health Care, Inc.), “A”, 5%, 7/15/2028 (Prerefunded 7/15/2021)		55,000		59,050
Wisconsin Public Finance Authority Hospital Rev. (WakeMed), “A”, 4%, 10/01/2049		700,000		749,140
Wisconsin Public Finance Authority Rev. (Denver International Airport Great Hall Project), 5%, 9/30/2037		165,000		191,441
Wisconsin Public Finance Authority Rev. (Denver International Airport Great Hall Project), 5%, 9/30/2049		165,000		187,539
Wisconsin Public Finance Authority Senior Living Refunding Bonds Rev. (Mary’s Woods at Marylhurst Project), “A”, 5.25%, 5/15/2037		25,000		27,187
Wisconsin Public Finance Authority Senior Living Refunding Bonds Rev. (Mary’s Woods at Marylhurst Project), “A”, 5.25%, 5/15/2042		10,000		10,791
Wisconsin Public Finance Authority Senior Living Refunding Bonds Rev. (Mary’s Woods at Marylhurst Project), “A”, 5.25%, 5/15/2047		100,000		107,584
Wisconsin Public Finance Authority Senior Living Refunding Bonds Rev. (Mary’s Woods at Marylhurst Project), “A”, 5.25%, 5/15/2052		15,000		16,096

33

Portfolio of Investments (unaudited) – continued

Issuer	Shares/Par		Value ($)
Municipal Bonds - continued
Wisconsin - continued
Wisconsin Public Finance Authority, Airport Facilities Rev. (Transportation Infrastructure Properties LLC), “B”, 5%, 7/01/2022	$	70,000	$	73,300
Wisconsin Public Finance Authority, Airport Facilities Rev. (Transportation Infrastructure Properties LLC), “B”, 5.25%, 7/01/2028		95,000		103,408
Wisconsin Public Finance Authority, Airport Facilities Rev. (Transportation Infrastructure Properties LLC), “B”, 5%, 7/01/2042		60,000		63,948
			$	2,598,316
Total Municipal Bonds (Identified Cost, $139,104,818)			$	148,578,932
Trust Units- 0.9%
Puerto Rico - 0.9%
COFINA Series 2007A Senior Bonds Due 2041 National Custodial Trust(tax-exempt), 8/01/2041		689	$	603
COFINA Series 2007A Senior Bonds Due 2042 National Custodial Trust (taxable), 8/01/2042		27,269		22,395
COFINA Series 2007A Senior Bonds Due 2042 National Custodial Trust(tax-exempt), 8/01/2042		141,676		123,966
COFINA Series 2007A Senior Bonds Due 2043 National Custodial Trust(tax-exempt), 8/01/2043		58,867		51,508
COFINA Series 2007A Senior Bonds Due 2044 National Custodial Trust(tax-exempt), 8/01/2044		176,602		154,527
COFINA Series 2007A Senior Bonds Due 2045 National Custodial Trust (taxable), 8/01/2045		7,297		5,993
COFINA Series 2007A Senior Bonds Due 2045 National Custodial Trust(tax-exempt), 8/01/2045		22,160		18,621
COFINA Series 2007A Senior Bonds Due 2046 National Custodial Trust (taxable), 8/01/2046		122,121		100,292
COFINA Series 2007A Senior Bonds Due 2046 National Custodial Trust(tax-exempt), 8/01/2046		429,542		360,944
Total Trust Units (Identified Cost, $855,109)			$	838,849
Other Assets, Less Liabilities - (3.8)%				(3,619,995	)
Variable Rate Municipal Term Preferred Shares (VMTPS), at liquidation value (issued by the fund) - (50.2)%				(48,750,000	)
Net assets applicable to common shares - 100.0%			$	97,047,786

(a) Non-income producing security.

(d) In default.

(n) Securities exempt from registration under Rule 144A of the Securities Act of 1933. These securities may be sold in the ordinary course of business in transactions exempt from registration, normally to qualified institutional buyers. At period end, the aggregate value of these securities was $181,990, representing 0.2% of net assets applicable to common shares.

34

Portfolio of Investments (unaudited) – continued

(u) Underlying security deposited into special purpose trust upon creation of self-deposited inverse floaters.

The following abbreviations are used in this report and are defined:

AAC Ambac Assurance Corp.

AGM Assured Guaranty Municipal

ASSD GTY Assured Guaranty Insurance Co.

BAM Build America Mutual

BHAC Berkshire Hathaway Assurance Corp.

CALHF California Health Facility Construction Loan Insurance Program

COP Certificate of Participation

GNMA Government National Mortgage Assn.

NATL National Public Finance Guarantee Corp.

PSF Permanent School Fund

See Notes to Financial Statements

35

Financial Statements

STATEMENT OF ASSETS AND LIABILITIES

At 5/31/19 (unaudited)

This statement represents your fund’s balance sheet, which details the assets and liabilities comprising the total value of the fund.

Assets
Investments in unaffiliated issuers, at value (identified cost, $139,959,927)	$149,417,781
Cash	174,547
Receivables for
Investments sold	160,045
Interest	2,221,482
Receivable from investment adviser	3,440
Other assets	14,333
Total assets	$151,991,628
Liabilities
Payables for
Distributions on common shares	$14,103
Interest expense and fees	175,463
Payable to the holders of the floating rate certificates	5,925,150
Payable to affiliates
Transfer agent and dividend disbursing costs	332
Payable for independent Trustees’ compensation	15
Accrued expenses and other liabilities	78,779
VMTPS, at liquidation value	48,750,000
Total liabilities	$54,943,842
Net assets applicable to common shares	$97,047,786
Net assets consist of
Paid-in capital - common shares	$85,686,997
Total distributable earnings (loss)	11,360,789
Net assets applicable to common shares	$97,047,786
VMTPS, at liquidation value (1,950 shares issued and outstanding at $25,000 per share)	48,750,000
Net assets including preferred shares	$145,797,786
Common shares of beneficial interest issued and outstanding	9,110,245
Net asset value per common share (net assets of $97,047,786 / 9,110,245 shares of beneficial interest outstanding)	$10.65

See Notes to Financial Statements

36

Financial Statements

STATEMENT OF OPERATIONS

Six months ended 5/31/19 (unaudited)

This statement describes how much your fund earned in investment income and accrued in expenses. It also describes any gains and/or losses generated by fund operations.

Net investment income (loss)
Income
Interest	$3,402,031
Other	28
Total investment income	$3,402,059
Expenses
Management fee	$463,789
Transfer agent and dividend disbursing costs	7,464
Administrative services fee	15,035
Independent Trustees’ compensation	9,718
Stock exchange fee	11,839
Custodian fee	3,585
Shareholder communications	13,269
Audit and tax fees	41,904
Legal fees	1,847
Interest expense and fees	774,899
Miscellaneous	42,553
Total expenses	$1,385,902
Reduction of expenses by investment adviser	(54,332	)
Net expenses	$1,331,570
Net investment income (loss)	$2,070,489
Realized and unrealized gain (loss)
Realized gain (loss) (identified cost basis)
Unaffiliated issuers	$311,866
Change in unrealized appreciation or depreciation
Unaffiliated issuers	$4,344,974
Net realized and unrealized gain (loss)	$4,656,840
Change in net assets from operations	$6,727,329

See Notes to Financial Statements

37

Financial Statements

STATEMENTS OF CHANGES IN NET ASSETS

These statements describe the increases and/or decreases in net assets resulting from operations, any distributions, and any shareholder transactions.

Change in net assets	Six months ended 5/31/19 (unaudited)			Year ended 11/30/18
From operations
Net investment income (loss)		$2,070,489			$4,438,461
Net realized gain (loss)		311,866			970,810
Net unrealized gain (loss)		4,344,974			(4,369,621	)
Change in net assets from operations		$6,727,329			$1,039,650
Distributions to common shareholders		$(2,036,140	)		$(4,358,391	)
Share transactions applicable to common and preferred shares
Change in net assets from the tender and repurchase of common shares of beneficial interest		$—			$(7,448,728	)
Total change in net assets		$4,691,189			$(10,767,469	)
Net assets applicable to common shares
At beginning of period		92,356,597			103,124,066
At end of period		$97,047,786			$92,356,597

See Notes to Financial Statements

38

Financial Statements

STATEMENT OF CASH FLOWS

Six months ended 5/31/19 (unaudited)

This statement provides a summary of cash flows from investment activity for the fund.

Cash flows from operating activities:
Change in net assets from operations	$6,727,329
Adjustments to reconcile change in net assets from operations to net cash provided by operating activities:
Purchase of investment securities	(15,515,543	)
Proceeds from disposition of investment securities	13,884,551
Realized gain/loss on investments	(311,866	)
Unrealized appreciation/depreciation on investments	(4,344,974	)
Net amortization/accretion of income	5,182
Decrease in interest receivable	76,444
Decrease in accrued expenses and other liabilities	(21,321	)
Decrease in receivable from investment adviser	644
Increase in other assets	(12,409	)
Decrease in payable for interest expense and fees	(2,163	)
Net cash provided by operating activities	$485,874
Cash flows from financing activities:
Cash distributions paid on common shares	(2,037,652	)
Proceeds from partial call of underlying security of special purpose trust	1,064,793
Payment for redemption of floating rate certificates	(535,000	)
Net cash used by financing activities	$(1,507,859	)
Net decrease in cash and restricted cash (a)	$(1,021,985	)
Cash and restricted cash:
Beginning of period	$1,196,532
End of period	$174,547

(a) See Note 2 for more information on presentational changes to the Statement of Cash Flows that were effective with the beginning of the current reporting period.

Supplemental disclosure of cash flow information:

Cash paid during the six months ended May 31, 2019 for interest was $777,062.

See Notes to Financial Statements

39

Financial Statements

FINANCIAL HIGHLIGHTS

The financial highlights table is intended to help you understand the fund’s financial performance for the semiannual period and the past 5 fiscal years. Certain information reflects financial results for a single fund share. The total returns in the table represent the rate that an investor would have earned (or lost) on an investment in the fund share class (assuming reinvestment of all distributions) held for the entire period.

	Six months ended 5/31/19			Year ended
Common Shares				11/30/18			11/30/17			11/30/16			11/30/15			11/30/14
	(unaudited)
Net asset value, beginning of period		$10.14			$10.47			$10.15			$10.60			$10.58			$9.61
Income (loss) from investment operations
Net investment income (loss) (d)		$0.23			$0.47	(c)		$0.48			$0.53	(c)		$0.55			$0.55
Net realized and unrealized gain (loss)		0.50			(0.36	)		0.29			(0.49	)		(0.02	)		0.95
Distributions declared to shareholders of auction rate preferred shares		—			—			—			(0.00	)(w)		(0.00	)(w)		(0.00	)(w)
Total from investment operations		$0.73			$0.11			$0.77			$0.04			$0.53			$1.50
Less distributions declared to common shareholders
From net investment income		$(0.22	)		$(0.46	)		$(0.48	)		$(0.49	)		$(0.51	)		$(0.53	)
Net increase resulting from the tender and repurchase of common shares of beneficial interest		$—			$0.02			$0.03			$—			$—			$—
Net asset value, end of period (x)		$10.65			$10.14			$10.47			$10.15			$10.60			$10.58
Market value, end of period		$9.50			$8.81			$9.70			$9.37			$9.70			$9.27
Total return at market value (%) (p)		10.43	(n)		(4.52	)		8.64			1.34			10.39			18.34
Total return at net asset value (%) (j)(r)(s)(x)		7.56	(n)		1.82	(c)		8.25			0.46	(c)		5.69			16.65
Ratios (%) (to average net assets applicable to common shares) and Supplemental data:
Expenses before expense reductions (f)(p)		2.94	(a)		2.88	(c)		2.35			1.82	(c)		1.72			1.77
Expenses after expense reductions (f)(p)		2.83	(a)		2.82	(c)		2.33			1.79	(c)		1.69			1.74
Net investment income (loss) (p)		4.40	(a)		4.55	(c)		4.53			4.89	(c)		5.16			5.42
Portfolio turnover		9	(n)		6			13			18			11			15
Net assets at end of period (000 omitted)		$97,048			$92,357			$103,124			$117,642			$122,830			$122,533

40

Financial Highlights – continued

	Six months ended 5/31/19			Year ended
				11/30/18			11/30/17		11/30/16			11/30/15		11/30/14
	(unaudited)
Supplemental Ratios (%):
Ratio of expenses to average net assets applicable to common shares after expense reductions and excluding interest expense and fees (f)(l)(p)		1.18	(a)		1.21	(c)		1.23		1.10	(c)		1.15		1.18
Ratio of expenses to average net assets applicable to common and preferred shares after expense reductions and excluding interest expense and fees (f)(l)(p)		0.78	(a)		0.81	(c)		0.87		0.80	(c)		0.82		0.83
Net investment income available to common shares		4.40	(a)		4.55	(c)		4.53		4.89	(c)		5.16		5.42
Senior Securities:
ARPS		—			—			—		—			33		33
VMTPS		1,950			1,950			1,950		1,950			1,917		1,917
Total preferred shares outstanding		1,950			1,950			1,950		1,950			1,950		1,950
Asset coverage per preferred share (k)		$74,768			$72,362			$77,869		$85,302			$87,990		$87,837
Involuntary liquidation preference per preferred share (m)		$25,000			$25,000			$25,000		$25,000			$25,000		$25,000
Average market value per preferred share (m)(u)		$25,000			$25,000			$25,000		$25,000			$25,000		$25,000

(a) Annualized.

(c) Amount reflects aone-time reimbursement of expenses by the custodian (or former custodian) without which net investment income and performance would be lower and expenses would be higher.

(d) Per share data is based on average shares outstanding.

(f) Ratios do not reflect reductions from fees paid indirectly, if applicable.

(j) Total return at net asset value is calculated using the net asset value of the fund, not the publicly traded price and therefore may be different than the total return at market value.

(k) Calculated by subtracting the fund’s total liabilities (not including liquidation preference of preferred shares) from the fund’s total assets and dividing this number by the total number of preferred shares outstanding.

(l) Interest expense and fees include payments made to the holders of the floating rate certificates, interest expense paid to shareholders of VMTPS, and amortization of VMTPS debt issuance costs, as applicable. For the year ended November 30, 2016, the expense ratio also excludes fees and expenses related to redemption of the fund’s auction rate preferred shares (“ARPS”). For the years ended November 30, 2018 and November 30, 2017, the expense ratio also excludes fees and expenses related to the tender and repurchase of a portion of the fund’s common shares of beneficial interest. For periods prior to November 30, 2016, the expense ratio includes amortization of VMTPS debt issuance costs.

(m) Amount excludes accrued unpaid distributions on preferred shares.

41

Financial Highlights – continued

(n) Not annualized.

(p) Ratio excludes dividend payments on ARPS, if applicable.

(r) Certain expenses have been reduced without which performance would have been lower.

(s) From time to time the fund may receive proceeds from litigation settlements, without which performance would be lower.

(u) Average market value represents the approximate fair value of each of the fund’s preferred shares.

(w) Per share amount was less than $0.01.

(x) The net asset values and total returns at net asset value have been calculated on net assets which include adjustments made in accordance with U.S. generally accepted accounting principles required at period end for financial reporting purposes.

See Notes to Financial Statements

42

NOTES TO FINANCIAL STATEMENTS

(unaudited)

(1) Business and Organization

MFS Investment Grade Municipal Trust (the fund) is organized as a Massachusetts business trust and is registered under the Investment Company Act of 1940, as amended, as a diversifiedclosed-end management investment company.

The fund is an investment company and accordingly follows the investment company accounting and reporting guidance of the Financial Accounting Standards Board (FASB) Accounting Standards Codification Topic 946 Financial Services – Investment Companies.

(2) Significant Accounting Policies

General– The preparation of financial statements in conformity with U.S. generally accepted accounting principles requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities, and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of increases and decreases in net assets from operations during the reporting period. Actual results could differ from those estimates. In the preparation of these financial statements, management has evaluated subsequent events occurring after the date of the fund’s Statement of Assets and Liabilities through the date that the financial statements were issued. The fund invests primarily in municipal instruments, which generally trade in theover-the-counter market. The value of municipal instruments can be affected by changes in their actual or perceived credit quality. The credit quality of, and the ability to pay principal and interest when due by, an issuer of a municipal instrument depends on the credit quality of the entity supporting the municipal instrument, how essential any services supported by the municipal instrument are, the sufficiency of any revenues or taxes that support the municipal instrument, and/or the willingness or ability of the appropriate government entity to approve any appropriations necessary to support the municipal instrument. Municipal instruments may be supported by insurance which typically guarantees the timely payment of all principal and interest due on the underlying municipal instrument. The value of a municipal instrument can be volatile and significantly affected by adverse tax changes or court rulings, legislative or political changes, changes in specific or general market and economic conditions in the region where the instrument is issued, and the financial condition of municipal issuers and of municipal instrument insurers of which there are a limited number. Also, because many municipal instruments are issued to finance similar projects, conditions in certain industries can significantly affect the fund and the overall municipal market. If the Internal Revenue Service determines an issuer of a municipal instrument has not complied with the applicable tax requirements, interest from the security could become taxable, the security could decline in value, and distributions made by the fund could be taxable to shareholders. The fund invests in high-yield securities rated below investment grade. Investments in below investment grade quality securities can involve a substantially greater risk of default or can already be in default, and their values can decline significantly. Below investment grade quality securities tend to be more sensitive to adverse news about the issuer, or the market or economy in general, than higher quality debt instruments.

43

Notes to Financial Statements (unaudited) – continued

In November 2016, the FASB issued Accounting Standards Update2016-18, Statement of Cash Flows (Topic 230) – Restricted Cash (“ASU2016-18”), which is effective for fiscal years beginning after December 15, 2017 and interim periods within those fiscal years. The fund adopted ASU2016-18 effective with the beginning of the current reporting period, which resulted in changes to the presentation of restricted cash in the fund’s Statement of Cash Flows and additional disclosures regarding the nature of the restrictions on cash and restricted cash.

In March 2017, the FASB issued Accounting Standards Update2017-08, Receivables – Nonrefundable Fees and Other Costs (Subtopic310-20) – Premium Amortization on Purchased Callable Debt Securities (“ASU2017-08”). For entities that purchased callable debt securities at a premium, ASU2017-08 requires that the premium be amortized to the earliest call date. ASU2017-08 will be effective for fiscal years beginning after December 15, 2018, and interim periods within those fiscal years. Management has evaluated the potential impacts of ASU2017-08 and believes that adoption of ASU2017-08 will not have a material effect on the fund’s overall financial position or its overall results of operations.

Balance Sheet Offsetting– The fund’s accounting policy with respect to balance sheet offsetting is that, absent an event of default by the counterparty or a termination of the agreement, the International Swaps and Derivatives Association (ISDA) Master Agreement, or similar agreement, does not result in an offset of reported amounts of financial assets and financial liabilities in the Statement of Assets and Liabilities across transactions between the fund and the applicable counterparty. The fund’s right to setoff may be restricted or prohibited by the bankruptcy or insolvency laws of the particular jurisdiction to which a specific master netting agreement counterparty is subject. Balance sheet offsetting disclosures, to the extent applicable to the fund, have been included in the fund’s Significant Accounting Policies note under the captions for each of the fund’sin-scope financial instruments and transactions.

Investment Valuations– Debt instruments and floating rate loans, including restricted debt instruments, are generally valued at an evaluated or composite bid as provided by a third-party pricing service. Short-term instruments with a maturity at issuance of 60 days or less may be valued at amortized cost, which approximates market value. Securities and other assets generally valued on the basis of information from a third-party pricing service may also be valued at a broker/dealer bid quotation. In determining values, third-party pricing services can utilize both transaction data and market information such as yield, quality, coupon rate, maturity, type of issue, trading characteristics, and other market data.

The Board of Trustees has delegated primary responsibility for determining or causing to be determined the value of the fund’s investments (including any fair valuation) to the adviser pursuant to valuation policies and procedures approved by the Board. If the adviser determines that reliable market quotations are not readily available, investments are valued at fair value as determined in good faith by the adviser in accordance with such procedures under the oversight of the Board of Trustees. Under the fund’s valuation policies and procedures, market quotations are not considered to be readily available for most types of debt instruments and floating rate loans and many types of derivatives. These investments are generally valued at fair value based on information

44

Notes to Financial Statements (unaudited) – continued

from third-party pricing services. In addition, investments may be valued at fair value if the adviser determines that an investment’s value has been materially affected by events occurring after the close of the exchange or market on which the investment is principally traded (such as foreign exchange or market) and prior to the determination of the fund’s net asset value, or after the halt of trading of a specific security where trading does not resume prior to the close of the exchange or market on which the security is principally traded. The adviser generally relies on third-party pricing services or other information (such as the correlation with price movements of similar securities in the same or other markets; the type, cost and investment characteristics of the security; the business and financial condition of the issuer; and trading and other market data) to assist in determining whether to fair value and at what value to fair value an investment. The value of an investment for purposes of calculating the fund’s net asset value can differ depending on the source and method used to determine value. When fair valuation is used, the value of an investment used to determine the fund’s net asset value may differ from quoted or published prices for the same investment. There can be no assurance that the fund could obtain the fair value assigned to an investment if it were to sell the investment at the same time at which the fund determines its net asset value per share.

Various inputs are used in determining the value of the fund’s assets or liabilities. These inputs are categorized into three broad levels. In certain cases, the inputs used to measure fair value may fall into different levels of the fair value hierarchy. In such cases, an investment’s level within the fair value hierarchy is based on the lowest level of input that is significant to the fair value measurement. The fund’s assessment of the significance of a particular input to the fair value measurement in its entirety requires judgment, and considers factors specific to the investment. Level 1 includes unadjusted quoted prices in active markets for identical assets or liabilities. Level 2 includes other significant observable market-based inputs (including quoted prices for similar securities, interest rates, prepayment speed, and credit risk). Level 3 includes unobservable inputs, which may include the adviser’s own assumptions in determining the fair value of investments. The following is a summary of the levels used as of May 31, 2019 in valuing the fund’s assets or liabilities:

Financial Instruments	Level 1		Level 2		Level 3		Total
Municipal Bonds		$—		$149,417,781		$—		$149,417,781

For further information regarding security characteristics, see the Portfolio of Investments.

Inverse Floaters– The fund invests in municipal inverse floating rate securities which are structured by the issuer (known as primary market inverse floating rate securities) or by the fund utilizing the fund’s municipal bonds which have already been issued (known as self-deposited secondary market inverse floating rate securities) to have variable rates of interest which typically move in the opposite direction of short-term interest rates. A self-deposited secondary market inverse floating rate security is created when the fund transfers a fixed rate municipal bond to a special purpose trust (“the trust”), and causes the trust to (a) issue floating rate certificates to third parties, in an amount equal to a fraction of the par amount of the deposited bonds (these certificates usually paytax-exempt interest at short-term interest rates that typically

45

Notes to Financial Statements (unaudited) – continued

reset weekly; and the certificate holders typically, on seven days notice, have the option to tender their certificates to the trust or another party for redemption at par plus accrued interest), and (b) issue inverse floating rate certificates (sometimes referred to as “inverse floaters”) which are held by the fund. Such self-deposited inverse floaters held by the fund are accounted for as secured borrowings, with the municipal bonds reflected in the investments of the fund and amounts owed to the holders of the floating rate certificates under the provisions of the trust, which amounts are paid solely from the assets of the trust, reflected as liabilities of the fund in the Statement of Assets and Liabilities under the caption, “Payable to the holders of the floating rate certificates”. The carrying value of the fund’s payable to the holders of the floating rate certificates as reported in the fund’s Statement of Assets and Liabilities approximates its fair value. The value of the payable to the holders of the floating rate certificates as of the reporting date is considered level 2 under the fair value hierarchy disclosure. At May 31, 2019, the fund’s payable to the holders of the floating rate certificates was $5,925,150 and the weighted average interest rate on the settled floating rate certificates issued by the trust was 1.67%. For the six months ended May 31, 2019, the average payable to the holders of the settled floating rate certificates was $5,971,375 at a weighted average interest rate of 1.73%. Interest expense and fees include interest payments made to the holders of certain floating rate certificates and associated fees, both of which are made from trust assets. Interest expense and fees are recorded as incurred. For the six months ended May 31, 2019, interest expense and fees related to self-deposited inverse floaters amounted to $74,136 and are included in “Interest expense and fees” in the Statement of Operations.

Statement of Cash Flows– Information on financial transactions which have been settled through the receipt or disbursement of cash or restricted cash is presented in the Statement of Cash Flows. Cash as presented in the fund’s Statement of Assets and Liabilities includes cash on hand at the fund’s custodian bank and does not include any short-term investments. Restricted cash is presented in the fund’s Statement of Assets and Liabilities as restricted cash for uncleared derivatives and/or deposits with brokers for cleared derivatives and represents cash that has been segregated or delivered to cover the fund’s collateral or margin obligations under derivative contracts.

The following table provides a reconciliation of cash and restricted cash reported within the Statement of Assets and Liabilities with that shown in the Statement of Cash Flows:

	5/31/19
Cash		$174,547
Restricted cash		—
Restricted cash included in deposits with brokers		—
Total cash and restricted cash in the Statement of Cash Flows		$174,547

The beginning of period cash and restricted cash balance in the Statement of Cash Flows is comprised of cash of $1,196,532, restricted cash of $0, and restricted cash included in deposits with brokers of $0.

Indemnifications– Under the fund’s organizational documents, its officers and Trustees may be indemnified against certain liabilities and expenses arising out of the performance of their duties to the fund. Additionally, in the normal course of business,

46

Notes to Financial Statements (unaudited) – continued

the fund enters into agreements with service providers that may contain indemnification clauses. The fund’s maximum exposure under these agreements is unknown as this would involve future claims that may be made against the fund that have not yet occurred.

Investment Transactions and Income– Investment transactions are recorded on the trade date. Interest income is recorded on the accrual basis. All premium and discount is amortized or accreted for financial statement purposes in accordance with U.S. generally accepted accounting principles. Interest payments received in additional securities are recorded on theex-interest date in an amount equal to the value of the security on such date. Debt obligations may be placed onnon-accrual status or set to accrue at a rate of interest less than the contractual coupon when the collection of all or a portion of interest has become doubtful. Interest income for those debt obligations may be further reduced by thewrite-off of the related interest receivables when deemed uncollectible.

The fund may receive proceeds from litigation settlements. Any proceeds received from litigation involving portfolio holdings are reflected in the Statement of Operations in realized gain/loss if the security has been disposed of by the fund or in unrealized gain/loss if the security is still held by the fund. Any other proceeds from litigation not related to portfolio holdings are reflected as other income in the Statement of Operations.

Legal fees and other related expenses incurred to preserve and protect the value of a security owned are added to the cost of the security; other legal fees are expensed. Capital infusions made directly to the security issuer, which are generallynon-recurring, incurred to protect or enhance the value of high-yield debt securities, are reported as additions to the cost basis of the security. Costs that are incurred to negotiate the terms or conditions of capital infusions or that are expected to result in a plan of reorganization are reported as realized losses. Ongoing costs incurred to protect or enhance an investment, or costs incurred to pursue other claims or legal actions, are expensed.

Tax Matters and Distributions– The fund intends to qualify as a regulated investment company, as defined under Subchapter M of the Internal Revenue Code, and to distribute all of its taxable andtax-exempt income, including realized capital gains. As a result, no provision for federal income tax is required. The fund’s federal tax returns, when filed, will remain subject to examination by the Internal Revenue Service for a three year period. Management has analyzed the fund’s tax positions taken on federal and state tax returns for all open tax years and does not believe that there are any uncertain tax positions that require recognition of a tax liability.

Distributions to shareholders are recorded on theex-dividend date. Income and capital gain distributions are determined in accordance with income tax regulations, which may differ from U.S. generally accepted accounting principles. Certain capital accounts in the financial statements are periodically adjusted for permanent differences in order to reflect their tax character. These adjustments have no impact on net assets or net asset value per share. Temporary differences which arise from recognizing certain items of income, expense, gain or loss in different periods for financial statement and tax purposes will reverse at some time in the future. Distributions in excess of net

47

Notes to Financial Statements (unaudited) – continued

investment income or net realized gains are temporary overdistributions for financial statement purposes resulting from differences in the recognition or classification of income or distributions for financial statement and tax purposes.

Book/tax differences primarily relate to defaulted bonds, expiration of capital loss carryforwards, amortization and accretion of debt securities, andnon-deductible expenses that result from the treatment of VMTPS as equity for tax purposes.

The tax character of distributions made during the current period will be determined at fiscal year end. The tax character of distributions declared to shareholders for the last fiscal year is as follows:

	Year ended 11/30/18
Ordinary income (including any short-term capital gains)		$98,250
Tax-exempt income		5,513,980
Total distributions		$5,612,230

The federal tax cost and the tax basis components of distributable earnings were as follows:

As of 5/31/19
Cost of investments	$132,930,931
Gross appreciation	10,873,111
Gross depreciation	(311,411	)
Net unrealized appreciation (depreciation)	$10,561,700
As of 11/30/18
Undistributed ordinary income	80,893
Undistributedtax-exempt income	859,995
Capital loss carryforwards	(266,825	)
Other temporary differences	(127,727	)
Net unrealized appreciation (depreciation)	6,123,264

The aggregate cost above includes prior fiscal year end tax adjustments, if applicable.

Under the Regulated Investment Company Modernization Act of 2010 (the “Act”), net capital losses recognized for fund fiscal years beginning after November 30, 2011 may be carried forward indefinitely, and their character is retained as short-term and/or long-term losses (“post-enactment losses”). Previously, net capital losses were carried forward for eight years and treated as short-term losses(“pre-enactment losses”). As a transition rule, the Act requires that all post-enactment net capital losses be used beforepre-enactment net capital losses.

As of November 30, 2018, the fund had capital loss carryforwards available to offset future realized gains. Suchpre-enactment losses expire as follows:

11/30/19 $(266,825 ) 

48

Notes to Financial Statements (unaudited) – continued

(3) Transactions with Affiliates

Investment Adviser– The fund has an investment advisory agreement with MFS to provide overall investment management and related administrative services and facilities to the fund. The management fee is computed daily and paid monthly at an annual rate of 0.65% of the fund’s average daily net assets (including the value of preferred shares). The investment adviser has agreed in writing to reduce its management fee to 0.63% of the fund’s average daily net assets (including the value of preferred shares). This written agreement will continue until modified by the fund’s Board of Trustees, but such agreement will continue at least until November 30, 2019. For the six months ended May 31, 2019, this management fee reduction amounted to $14,270, which is included in the reduction of total expenses in the Statement of Operations. The management fee incurred for the six months ended May 31, 2019 was equivalent to an annual effective rate of 0.63% of the fund’s average daily net assets (including the value of preferred shares).

The investment adviser has agreed in writing to pay a portion of the fund’s total annual operating expenses, excluding interest expense on VMTPS, amortization of debt issuance costs on VMTPS, taxes, extraordinary expenses, brokerage and transaction costs, other interest expense, and investment-related expenses (including interest expense and fees associated with investments in inverse floating rate instruments), such that total fund operating expenses do not exceed 0.78% annually of the fund’s average daily net assets (including the value of preferred shares). This written agreement will continue until modified by the fund’s Board of Trustees, but such agreement will continue at least until November 30, 2019. For the six months ended May 31, 2019, this reduction amounted to $40,062, which is included in the reduction of total expenses in the Statement of Operations.

Transfer Agent– The fund engages Computershare Trust Company, N.A. (“Computershare”) as the sole transfer agent for the fund’s common shares. MFS Service Center, Inc. (MFSC) monitors and supervises the activities of Computershare for an agreed upon fee approved by the Board of Trustees. For the six months ended May 31, 2019, these fees paid to MFSC amounted to $1,695.

Administrator– MFS provides certain financial, legal, shareholder communications, compliance, and other administrative services to the fund. Under an administrative services agreement, the fund reimburses MFS the costs incurred to provide these services. The fund is charged an annual fixed amount of $17,500 plus a fee based on average daily net assets (including the value of preferred shares). The administrative services fee incurred for the six months ended May 31, 2019 was equivalent to an annual effective rate of 0.0211% of the fund’s average daily net assets (including the value of preferred shares).

Trustees’ and Officers’ Compensation– The fund pays compensation to independent Trustees in the form of a retainer, attendance fees, and additional compensation to Board and Committee chairpersons. The fund does not pay compensation directly to Trustees or officers of the fund who are also officers of the investment adviser, all of whom receive remuneration from MFS for their services to the fund. Certain officers and Trustees of the fund are officers or directors of MFS and MFSC.

49

Notes to Financial Statements (unaudited) – continued

Other– This fund and certain other funds managed by MFS (the funds) have entered into a service agreement (the ISO Agreement) which provides for payment of fees solely by the funds to Tarantino LLC in return for the provision of services of an Independent Senior Officer (ISO) for the funds. Frank L. Tarantino serves as the ISO and is an officer of the funds and the sole member of Tarantino LLC. The funds can terminate the ISO Agreement with Tarantino LLC at any time under the terms of the ISO Agreement. For the six months ended May 31, 2019, the fee paid by the fund under this agreement was $83 and is included in “Miscellaneous” expense in the Statement of Operations. MFS has agreed to bear all expenses associated with office space, other administrative support, and supplies provided to the ISO.

(4) Portfolio Securities

For the six months ended May 31, 2019, purchases and sales of investments, other than short-term obligations, aggregated $14,149,617 and $13,795,495, respectively.

(5) Shares of Beneficial Interest

The fund’s Declaration of Trust permits the Trustees to issue an unlimited number of full and fractional shares of beneficial interest. The fund reserves the right to repurchase shares of beneficial interest of the fund subject to Trustee approval.

On March 12, 2018, the fund commenced a cash tender offer for up to 7.5% of the fund’s outstanding common shares at a price per share equal to 98% of the fund’s net asset value per share calculated at the close of regular trading on the New York Stock Exchange on the expiration date of the offer. This tender offer expired on May 2, 2018, at which time the offer was oversubscribed. The fund purchased the maximum number of shares offered in the tender offer (738,668 common shares representing 7.5% of the fund’s then outstanding common shares). The purchase price of the properly tendered shares was equal to $10.084 per share for an aggregate purchase price of $7,448,728. As a result of this tender offer, payment was made by the fund on May 7, 2018, at which time 738,668 common shares outstanding were retired.

During the six months ended May 31, 2019 and the year ended November 30, 2018, the fund did not repurchase any additional shares other than through this tender offer and there were no other transactions in fund shares.

(6) Line of Credit

The fund and certain other funds managed by MFS participate in a $1.25 billion unsecured committed line of credit, subject to a $1 billion sublimit, provided by a syndicate of banks under a credit agreement. Borrowings may be made for temporary financing needs. Interest is charged to each fund, based on its borrowings, generally at a rate equal to the highest of one month LIBOR, the Federal Funds Effective Rate and the Overnight Bank Funding Rate, plus an agreed upon spread. A commitment fee, based on the average daily, unused portion of the committed line of credit, is allocated among the participating funds. In addition, the fund and other funds managed by MFS have established unsecured uncommitted borrowing arrangements with certain banks for temporary financing needs. Interest is charged to each fund, based on its borrowings, at rates equal to customary reference rates plus an agreed upon spread. For the six months ended May 31, 2019, the fund’s commitment fee and interest expense were $278 and $0, respectively, and are included in “Interest expense and fees” in the Statement of Operations.

50

Notes to Financial Statements (unaudited) – continued

(7) Preferred Shares

The fund has 1,950 shares issued and outstanding of VMTPS. The outstanding VMTPS are redeemable at the option of the fund in whole or in part at the liquidation preference of $25,000 per share, plus accumulated and unpaid dividends, but generally solely for the purpose of decreasing the leverage of the fund. The VMTPS are subject to a mandatory term redemption date of October 31, 2021, as extended, unless further extended through negotiation with the private holders of the VMTPS. There is no assurance that the term of the VMTPS will be extended or that the VMTPS will be replaced with any other preferred shares or other form of leverage upon the redemption of the VMTPS. Two months prior to the term redemption date of the VMTPS, the fund is required to begin to segregate liquid assets with the fund’s custodian to fund the redemption. Dividends on the VMTPS are cumulative and are reset weekly to a fixed spread against the Securities Industry and Financial Markets Association (SIFMA) Municipal Swap Index. During the six months ended May 31, 2019, the VMTPS dividend rates ranged from 2.43% to 3.45%. For the six months ended May 31, 2019, the average dividend rate was 2.77%.

In the fund’s Statement of Assets and Liabilities, the VMTPS aggregate liquidation preference is shown as a liability since they have a stated mandatory redemption date. Dividends paid to the VMTPS are treated as interest expense and recorded as incurred. For the six months ended May 31, 2019, interest expense related to the dividends paid to VMTPS amounted to $700,485 and is included in “Interest expense and fees” in the Statement of Operations. Costs directly related to the issuance of the VMTPS are considered debt issuance costs. Debt issuance costs are presented as a direct deduction from the carrying amount of the related debt liability and are being amortized into interest expense over the life of the VMTPS. Theperiod-end carrying value for the VMTPS in the fund’s Statement of Assets and Liabilities is its liquidation value less any unamortized debt issuance costs, which approximates its fair value. Its fair value would be considered level 2 under the fair value hierarchy.

Under the terms of a purchase agreement between the fund and the investor in the VMTPS, the fund is subject to various investment restrictions. These investment-related requirements are in various respects more restrictive than those to which the fund is otherwise subject in accordance with its investment objectives and policies. In addition, the fund is subject to certain restrictions on its investments imposed by guidelines of the rating agencies that rate the VMTPS, which guidelines may be changed by the applicable rating agency, in its sole discretion, from time to time. These guidelines may impose asset coverage or portfolio composition requirements that are more stringent than those imposed on the fund by the Investment Company Act of 1940 (the “1940 Act”).

The fund is required to maintain certain asset coverage with respect to the VMTPS as defined in the fund’s governing documents and the 1940 Act. One of a number of asset coverage-related requirements is that the fund is not permitted to declare or pay common share dividends unless immediately thereafter the fund has a minimum asset coverage ratio of 200% with respect to the VMTPS after deducting the amount of such common share dividends.

51

Notes to Financial Statements (unaudited) – continued

The 1940 Act requires that the preferred shareholders of the fund, voting as a separate class, have the right to elect at least two trustees at all times, and elect a majority of the trustees at any time when dividends on the preferred shares are unpaid for two full years. Unless otherwise required by law or under the terms of the preferred shares, each preferred share is entitled to one vote and preferred shareholders will vote together with common shareholders as a single class.

Leverage involves risks and special considerations for the fund’s common shareholders. To the extent that investments are purchased by the fund with proceeds from the issuance of preferred shares, the fund’s net asset value will increase or decrease at a greater rate than a comparable unleveraged fund. Changes in the value of the fund’s portfolio will be borne entirely by the common shareholders. It is possible that the fund will be required to sell assets at a time when it may be disadvantageous to do so in order to redeem preferred shares to comply with asset coverage or other restrictions including those imposed by the 1940 Act and the rating agencies that rate the preferred shares. There is no assurance that the fund’s leveraging strategy will be successful.

52

REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

To the Board of Trustees and Shareholders of MFS Investment Grade Municipal Trust:

We have reviewed the accompanying statement of assets and liabilities of MFS Investment Grade Municipal Trust (the Fund), including the portfolio of investments, as of May 31, 2019, and the related statements of operations, changes in net assets, cash flows and financial highlights for thesix-month period ended May 31, 2019. These interim financial statements and financial highlights are the responsibility of the Fund’s management.

We conducted our review in accordance with the standards of the Public Company Accounting Oversight Board (United States). A review of interim financial information consists principally of applying analytical procedures and making inquiries of persons responsible for financial and accounting matters. It is substantially less in scope than an audit conducted in accordance with the standards of the Public Company Accounting Oversight Board (United States), the objective of which is the expression of an opinion regarding the financial statements taken as a whole. Accordingly, we do not express such an opinion.

Based on our review, we are not aware of any material modifications that should be made to the accompanying interim financial statements and financial highlights for them to be in conformity with U.S. generally accepted accounting principles.

We have previously audited, in accordance with the standards of the Public Company Accounting Oversight Board (United States), the statement of changes in net assets for the year ended November 30, 2018 and the financial highlights for each of the five years in the period ended November 30, 2018, and in our report dated January 17, 2019, we expressed an unqualified opinion on such statement of changes in net assets and financial highlights.

Boston, Massachusetts

July 17, 2019

53

PROXY VOTING POLICIES AND INFORMATION

MFS votes proxies on behalf of the fund pursuant to proxy voting policies and procedures that are available without charge, upon request, by calling1-800-225-2606, by visitingmfs.com/proxyvoting, or by visiting the SEC Web site athttp://www.sec.gov.

Information regarding how the fund voted proxies relating to portfolio securities during the most recent twelve-month period ended June 30 is available by August 31 of each year without charge by visitingmfs.com/proxyvoting, or by visiting the SEC’s Web site athttp://www.sec.gov.

QUARTERLY PORTFOLIO DISCLOSURE

The fund files a complete schedule of portfolio holdings with the SEC for the first and third quarters of each fiscal year on Form N-Q or as an exhibit to its reports onForm N-PORT (for first and third fiscal quarters ending March 31, 2019 or after). The fund’s Form N-Q or Form N-PORT reports are available on the SEC’s website athttp://www.sec.gov. A shareholder can obtain the portfolio holdings report for the first and third quarters of the fund’s fiscal year atmfs.com/closedendfunds by choosing the fund’s name and then selecting the “Resources” tab and clicking on “Prospectus and Reports”.

FURTHER INFORMATION

From time to time, MFS may post important information about the fund or the MFS funds on the MFS web site (mfs.com). This information is available athttps://www.mfs.com/en-us/what-we-do/announcements.html or atmfs.com/closedendfunds by choosing the fund’s name.

Additional information about the fund (e.g., performance, dividends and the fund’s price history) is also available by clicking on the fund’s name under “Closed-End Funds” in the “Products” section ofmfs.com.

INFORMATION ABOUT FUND CONTRACTS AND LEGAL CLAIMS

The fund has entered into contractual arrangements with an investment adviser, administrator, transfer agent, and custodian who each provide services to the fund. Unless expressly stated otherwise, shareholders are not parties to, or intended beneficiaries of these contractual arrangements, and these contractual arrangements are not intended to create any shareholder right to enforce them against the service providers or to seek any remedy under them against the service providers, either directly or on behalf of the fund.

Under the Trust’s By-Laws, any claims asserted against or on behalf of the MFS Funds, including claims against Trustees and Officers, must be brought in state and federal courts located within the Commonwealth of Massachusetts.

54

CONTACT US

TRANSFER AGENT, REGISTRAR, AND

DIVIDEND DISBURSING AGENT

CALL

1-800-637-2304

9 a.m. to 5 p.m. Eastern time

WRITE

Computershare Trust Company, N.A.

P.O. Box 43078

Providence, RI 02940-3078

New York Stock Exchange Symbol:CXH

ITEM 2. CODE OF ETHICS.

During the period covered by this report, the Registrant has not amended any provision in its Code of Ethics (the “Code”) that relates to an element of the Code’s definition enumerated in paragraph (b) of Item 2 of this FormN-CSR. During the period covered by this report, the Registrant did not grant a waiver, including an implicit waiver, from any provision of the Code.

ITEM 3. AUDIT COMMITTEE FINANCIAL EXPERT.

Not applicable for semi-annual reports.

ITEM 4. PRINCIPAL ACCOUNTANT FEES AND SERVICES.

Not applicable for semi-annual reports.

ITEM 5. AUDIT COMMITTEE OF LISTED REGISTRANTS.

Not applicable for semi-annual reports.

ITEM 6. SCHEDULE OF INVESTMENTS

A schedule of investments for MFS Investment Grade Municipal Trust is included as part of the report to shareholders under Item 1 of this FormN-CSR.

ITEM 7. DISCLOSURE OF PROXY VOTING POLICIES AND PROCEDURES FORCLOSED-END MANAGEMENT INVESTMENT COMPANIES.

Not applicable for semi-annual reports.

ITEM 8. PORTFOLIO MANAGERS OFCLOSED-END MANAGEMENT INVESTMENT COMPANIES.

There were no changes during this period.

ITEM 9. PURCHASES OF EQUITY SECURITIES BYCLOSED-END MANAGEMENT INVESTMENT COMPANY AND AFFILIATED PURCHASERS.

MFS Investment Grade Municipal Trust
Period	(a) Total number of Shares Purchased		(b) Average Price Paid per Share		(c) Total Number of Shares Purchased as Part of  Publicly Announced Plans or Programs		(d) Maximum Number (or Approximate Dollar Value) of Shares that  May Yet Be Purchased under the Plans or Programs
12/01/18-12/31/18		0		N/A		0		911,024
1/01/19-1/31/19		0		N/A		0		911,024
2/01/19-2/28/19		0		N/A		0		911,024
3/01/19-3/31/19		0		N/A		0		911,024
4/01/19-4/30/19		0		N/A		0		911,024
5/01/19-5/31/19		0		N/A		0		911,024
Total		0				0

Note: The Board approved procedures to repurchase shares and reviews the results periodically. The notification to shareholders of the program is part of the semi-annual and annual reports sent to shareholders. These annual programs begin on October 1st of each year. The programs conform to the conditions of Rule10b-18 of the Securities Exchange Act of 1934 and limit the aggregate number of shares that may be purchased in each annual period (October 1 through the following September 30) to 10% of the Registrant’s outstanding shares as of the first day of the plan year (October 1). The aggregate number of shares available for purchase for the October 1, 2018 plan year is 911,024.

ITEM 10. SUBMISSION OF MATTERS TO A VOTE OF SECURITY HOLDERS.

There were no material changes to the procedures by which shareholders may send recommendations to the Board for nominees to the Registrant’s Board since the Registrant last provided disclosure as to such procedures in response to the requirements of Item 407 (c)(2)(iv) of RegulationS-K or this Item.

ITEM 11. CONTROLS AND PROCEDURES.

(a) Based upon their evaluation of the registrant’s disclosure controls and procedures (as defined in Rule30a-3(c) under the Investment Company Act of 1940 (the “Act”)) as conducted within 90 days of the filing date of this FormN-CSR, the registrant’s principal financial officer and principal executive officer have concluded that those disclosure controls and procedures provide reasonable assurance that the material information required to be disclosed by the registrant on this report is recorded, processed, summarized and reported within the time periods specified in the Securities and Exchange Commission’s rules and forms.

(b) There were no changes in the registrant’s internal controls over financial reporting (as defined in Rule30a-3(d) under the Act) that occurred during the second fiscal quarter covered by the report that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting.

ITEM 12. DISCLOSURE OF SECURITIES LENDING ACTIVITIES FORCLOSED-END MANAGEMENT INVESTMENT COMPANIES.

Not applicable for semi-annual reports.

ITEM 13. EXHIBITS.

(a)    (1) Any code of ethics, or amendment thereto, that is the subject of the disclosure required by Item 2, to the extent that the registrant intends to satisfy the Item 2 requirements through filing of an exhibit. Not applicable.

(2) A separate certification for each principal executive officer and principal financial officer of the registrant as required by Rule30a-2(a) under the Act (17 CFR270.30a-2): Attached hereto asEX-99.302CERT.

(3) Any written solicitation to purchase securities under Rule23c-1 under the Act (17 CFR270.23c-1) sent or given during the period covered by the report by or on behalf of the registrant to 10 or more persons. Not applicable.

(4) Change in the registrant’s independent public accountant. Not applicable.

(b) If the report is filed under Section 13(a) or 15(d) of the Exchange Act, provide the certifications required by Rule30a-2(b) under the Act (17 CFR270.30a-2(b)), Rule13a-14(b) or Rule15d-14(b) under the Exchange Act (17 CFR240.13a-14(b) or240.15d-14(b)) and Section 1350 of Chapter 63 of Title 18 of the United States Code (18 U.S.C. 1350) as an exhibit. A certification furnished pursuant to this paragraph will not be deemed “filed” for the purposes of Section 18 of the Exchange Act (15 U.S.C. 78r), or otherwise subject to the liability of that section. Such certification will not be deemed to be incorporated by reference into any filing under the Securities Act of 1933 or the Exchange Act, except to the extent that the registrant specifically incorporates it by reference: Attached hereto asEX-99.906CERT.

Notice

A copy of the Agreement and Declaration of Trust, as amended, of the Registrant is on file with the Secretary of State of the Commonwealth of Massachusetts and notice is hereby given that this instrument is executed on behalf of the Registrant by an officer of the Registrant as an officer and not individually and the obligations of or arising out of this instrument are not binding upon any of the Trustees or shareholders individually, but are binding only upon the assets and property of the respective constituent series of the Registrant.

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: MFS INVESTMENT GRADE MUNICIPAL TRUST

By (Signature and Title)*	DAVID L. DILORENZO
	David L. DiLorenzo, President

Date: July 17, 2019

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)*	DAVID L. DILORENZO
	David L. DiLorenzo, President (Principal Executive Officer)

Date: July 17, 2019

By (Signature and Title)*	JAMES O. YOST
	James O. Yost, Treasurer (Principal Financial Officer and Accounting Officer)

Date:July 17, 2019

* Print name and title of each signing officer under his or her signature.