MFS Municipal Income R6 (MPMNX) NPORT-P MFS Virginia Municipal Bond Fund (Jun 2024 report)

Quarterly Report

June 30, 2024

MFS^®Virginia
Municipal Bond Fund

MVA-Q1

Portfolio of Investments

6/30/24 (unaudited)

The Portfolio of Investments is a complete list of all securities owned by your fund. It is categorized by broad-based asset classes.

Issuer		Shares/Par	Value ($)
Municipal Bonds – 97.8%
Airport Revenue – 4.5%
Metropolitan Washington, D.C., Airport Authority System Refunding Rev., “A”, 5%, 10/01/2034	$	3,000,000	$3,010,027
Metropolitan Washington, D.C., Airport Authority System Refunding Rev., “A”, 5%, 10/01/2037		1,000,000	1,040,483
Metropolitan Washington, D.C., Airport Authority System Refunding Rev., “A”, 5%, 10/01/2038		1,000,000	1,037,402
Metropolitan Washington, D.C., Airport Authority System Refunding Rev., “A”, 4%, 10/01/2039		1,000,000	984,270
Metropolitan Washington, D.C., Airport Authority System Refunding Rev., “A”, 4%, 10/01/2041		1,000,000	974,437
Metropolitan Washington, D.C., Airport Authority System Refunding Rev., “A”, 5.25%, 10/01/2048		3,600,000	3,845,837
Metropolitan Washington, D.C., Airport Authority System Refunding Rev., “B”, 5%, 10/01/2027		980,000	990,924
Metropolitan Washington, D.C., Airport Authority System Refunding Rev., “B”, 5%, 10/01/2028		1,000,000	1,010,971
New York Transportation Development Corp. Special Facilities (LaGuardia Airport Terminal B Redevelopment Project), “A”, 5%, 7/01/2034		995,000	995,988
New York Transportation Development Corp., Special Facilities Rev. (John F. Kennedy International Airport New Terminal One Project), AGM, 5.25%, 6/30/2060		1,650,000	1,727,522
			$15,617,861
General Obligations - General Purpose – 7.6%
Alexandria, VA, General Obligation, “B”, 4%, 12/15/2043	$	1,375,000	$1,393,903
Alexandria, VA, General Obligation, “B”, 4%, 12/15/2044		1,430,000	1,442,333
Alexandria, VA, General Obligation, “B”, 4%, 12/15/2045		1,485,000	1,495,916
Alexandria, VA, General Obligation, “B”, 4%, 12/15/2046		1,550,000	1,557,240
Bridgeview, IL, Stadium and Redevelopment Projects, Taxable, AAC, 5.14%, 12/01/2036		775,000	695,012
Bristol County, VA, General Obligation Anticipation Notes, 5%, 9/01/2027		1,650,000	1,674,984
Chesterfield County, VA, Public Improvement, “A”, 4%, 1/01/2036		1,570,000	1,603,895
Chicago, IL, General Obligation, “A”, 5.5%, 1/01/2040		1,300,000	1,406,413
Chicago, IL, General Obligation, “F”, 5.5%, 1/01/2042		475,000	476,022
Commonwealth of Puerto Rico, General Obligation Restructured Bonds, “A”, 5.625%, 7/01/2029		144,946	155,457
Commonwealth of Puerto Rico, General Obligation Restructured Bonds, “A”, 5.75%, 7/01/2031		318,785	353,991
Commonwealth of Puerto Rico, General Obligation Restructured Bonds, “A”, 4%, 7/01/2033		133,501	133,701
Commonwealth of Puerto Rico, General Obligation Restructured Bonds, “A”, 4%, 7/01/2035		251,000	246,397
Commonwealth of Puerto Rico, General Obligation Restructured Bonds, “A”, 4%, 7/01/2037		102,991	99,143
Commonwealth of Puerto Rico, General Obligation Restructured Bonds, “A”, 4%, 7/01/2041		140,029	130,508
Commonwealth of Puerto Rico, General Obligation Restructured Bonds, “A”, 4%, 7/01/2046		476,628	431,186
Commonwealth of Puerto Rico, General Obligation Restructured Bonds, Capital Appreciation, “A”, 0%, 7/01/2024		21,717	21,717
Commonwealth of Puerto Rico, General Obligation Restructured Bonds, Capital Appreciation, “A”, 0%, 7/01/2033		171,803	114,637
Fairfax County, VA, Public Improvement, “A”, 5%, 10/01/2037		2,000,000	2,148,170
Fairfax County, VA, Public Improvement, “B”, 4%, 10/01/2025		3,900,000	3,937,423
Norfolk, VA, General Obligation Capital Improvement, “A”, 5%, 9/01/2039		800,000	901,137
Norfolk, VA, General Obligation Capital Improvement, “A”, 5%, 9/01/2040		925,000	1,035,845
Petersburg, VA, General Obligation, 4.25%, 9/01/2048		1,160,000	1,176,414
Petersburg, VA, General Obligation, 4.25%, 9/01/2053		1,500,000	1,513,391
State of Illinois, General Obligation, 5.5%, 5/01/2039		270,000	295,562
State of Illinois, General Obligation, 5.75%, 5/01/2045		245,000	266,095
State of Illinois, General Obligation, “B”, 5.5%, 5/01/2047		280,000	304,684
Suffolk, VA, General Obligation Capital Improvement, “A”, 2%, 2/01/2039		1,675,000	1,228,540
Texas Cedar Port Navigation & Improvement District, Unlimited Tax, 4.5%, 9/01/2048		365,000	367,857
Texas Cedar Port Navigation & Improvement District, Unlimited Tax, 4.5%, 9/01/2052		145,000	145,375
			$26,752,948
Healthcare Revenue - Hospitals – 12.7%
Arlington County, VA, Industrial Development Authority, Hospital Rev. (Virginia Hospital Center), 5%, 7/01/2037	$	2,800,000	$3,009,278
Chesapeake, VA, Hospital Authority Facility Rev. (Chesapeake Regional Medical Center), 5%, 7/01/2033		2,000,000	2,122,669
Chesapeake, VA, Hospital Authority Facility Rev. (Chesapeake Regional Medical Center), 5%, 7/01/2034		1,475,000	1,568,428
Chesapeake, VA, Hospital Authority Facility Rev. (Chesapeake Regional Medical Center), 4%, 7/01/2043		625,000	595,021
Doylestown, PA, Hospital Authority Rev., “A”, 4%, 7/01/2045 (Prerefunded 7/01/2029)		5,000	5,165
Doylestown, PA, Hospital Authority Rev., “A”, 4%, 7/01/2045		40,000	33,865
Fairfax County, VA, Industrial Development Authority Health Care Refunding Rev. (Inova Health System Project), 5%, 5/15/2029		1,475,000	1,598,288
Fairfax County, VA, Industrial Development Authority Health Care Rev. (Inova Health System Project), “A”, 4%, 5/15/2044		2,000,000	1,989,080

1

Portfolio of Investments (unaudited) – continued

Issuer		Shares/Par	Value ($)
Municipal Bonds – continued
Healthcare Revenue - Hospitals – continued
Fairfax County, VA, Industrial Development Authority Health Care Rev. (Inova Health System Project), “A”, 4%, 5/15/2048	$	4,000,000	$3,899,639
Fredericksburg, VA, Economic Development Authority, Hospital Facilities Rev. (Mary Washington Healthcare Obligated Group), 5%, 6/15/2031		750,000	750,228
Fredericksburg, VA, Economic Development Authority, Hospital Facilities Rev. (Mary Washington Healthcare Obligated Group), 5%, 6/15/2033		1,000,000	1,000,266
Harris County, TX, Cultural Education Facilities Finance Corp., Hospital Rev. (Memorial Hermann Health System), “A”, 4.125%, 7/01/2052		1,835,000	1,751,276
Isle of Wright County, VA, Economic Development Authority, Health System Rev. (Riverside Health System), AGM, 5.25%, 7/01/2043		1,000,000	1,098,093
Isle of Wright County, VA, Economic Development Authority, Health System Rev. (Riverside Health System), AGM, 5.25%, 7/01/2048		4,000,000	4,328,025
Lynchburg, VA, Economic Development Authority Hospital Refunding Rev. (Centra Health Obligated Group), 4%, 1/01/2038		2,200,000	2,207,828
Lynchburg, VA, Economic Development Authority Hospital Refunding Rev. (Centra Health Obligated Group), 4%, 1/01/2039		1,320,000	1,310,001
Lynchburg, VA, Economic Development Authority Hospital Refunding Rev. (Centra Health Obligated Group), 4%, 1/01/2040		550,000	543,070
Lynchburg, VA, Economic Development Authority Rev. (Centra Health), “A”, 5%, 1/01/2047		3,000,000	3,025,079
Norfolk, VA, Economic Development Authority Hospital Facilities Refunding Rev. (Sentara Healthcare), “B”, 4%, 11/01/2048		3,000,000	2,897,704
Roanoke, VA, Economic Development Authority, Hospital Rev. (Carilion Medical Center), “A”, 5%, 7/01/2047		1,625,000	1,875,491
Rockingham County, VA, Economic Development Authority, Health Care Facilities Rev. (Sentara RMH Medical Center), “A”, 3%, 11/01/2046		2,255,000	1,814,969
Virginia Small Business Financing Authority Rev. (Sentara Healthcare), 3%, 11/01/2040		3,370,000	2,889,100
Virginia Small Business Financing Authority, Health Facilities Rev. (Bon Secours Mercy Health, Inc.), “A”, 4%, 12/01/2049		3,445,000	3,290,365
Winchester, VA, Economic Development Authority Hospital Rev. (Valley Health System Obligated Group), 5%, 1/01/2028		600,000	611,488
Winchester, VA, Economic Development Authority Hospital Rev. (Valley Health System Obligated Group), 5%, 1/01/2030		400,000	406,900
			$44,621,316
Healthcare Revenue - Long Term Care – 3.5%
Alexandria, VA, Industrial Development Authority, Residential Care Facilities Mortgage Rev. (Goodwin House, Inc.), 5%, 10/01/2030 (Prerefunded 10/01/2025)	$	1,000,000	$1,021,496
Fairfax County, VA, Economic Development Authority Residential Care Facilities Rev. (Goodwin House, Inc.), 5%, 10/01/2036 (Prerefunded 10/01/2024)		1,000,000	1,022,655
Henrico County, VA, Economic Development Authority Rev., Residential Care Facility (Lifespire of Virginia.), “C”, 5%, 12/01/2037		765,000	779,385
Henrico County, VA, Economic Development Authority Rev., Residential Care Facility (Virginia United Methodist Homes, Inc.), 5%, 6/01/2025		385,000	385,069
Henrico County, VA, Economic Development Authority Rev., Residential Care Facility (Westminster-Canterbury of Richmond), 4%, 10/01/2040		500,000	488,817
Henrico County, VA, Economic Development Authority Rev., Residential Care Facility (Westminster-Canterbury of Richmond), 4%, 10/01/2045		720,000	674,254
Lexington, VA, Industrial Development Authority Residential Care Facilities Rev. (Kendal at Lexington), 4%, 1/01/2037		1,000,000	980,704
Prince William County, VA, Industrial Development Authority, Residential Care Facilities Rev. (Westminster at Lake Ridge), 5%, 1/01/2037		1,000,000	941,433
Suffolk, VA, Economic Development Facilities First Mortgage Rev. (Lake Prince Center, Inc.), 5%, 9/01/2031		1,000,000	996,955
Virginia Beach, VA, Development Authority, Residential Care Facility Rev. (Westminster - Canterbury on Chesapeake Bay), 7%, 9/01/2053		2,000,000	2,287,508
Virginia Small Business Financing Authority Rev. (Obligated Group of National Senior Campuses, Inc.), “A”, 5%, 1/01/2033		1,750,000	1,854,601
Virginia Small Business Financing Authority, Residential Care Facility Rev. (Pinnacle Living), “C”, 5%, 6/01/2042		1,000,000	1,002,310
			$12,435,187
Industrial Revenue - Environmental Services – 1.7%
Charles City County, VA, Industrial Development Authority, Solid Waste Disposal Rev. (Waste Management, Inc. Project), “A”, 4.25%, 8/01/2027 (Put Date 8/01/2027)	$	1,000,000	$999,970
Southampton County, VA, Industrial Development Authority, Environmental Improvement Rev. (PRTI-Virginia One, LLC Project), 4.875%, 11/01/2053 (Put Date 12/12/2024)		4,000,000	3,996,986
Virginia Small Business Financing Authority Rev., Solid Waste Disposal (Covanta Project), 5%, 1/01/2048 (Put Date 7/01/2038) (n)		1,000,000	999,958
			$5,996,914
Industrial Revenue - Other – 0.1%
Port Beaumont, TX, Navigation District, Dock & Wharf Facility Rev. (Jefferson Gulf Coast Energy Project), “A”, 3.625%, 1/01/2035 (n)	$	300,000	$271,798

2

Portfolio of Investments (unaudited) – continued

Issuer		Shares/Par	Value ($)
Municipal Bonds – continued
Miscellaneous Revenue - Other – 1.0%
Loudoun County, VA, Economic Development Authority Rev. (Howard Hughes Medical Institute), Capital Appreciation, “A”, 0%, 7/01/2049	$	7,500,000	$2,424,665
Matching Fund Special Purpose Securitization Corp., “A”, 5%, 10/01/2026		130,000	132,847
New York Liberty Development Corp., Liberty Rev. (3 World Trade Center Project), “1”, 5%, 11/15/2044 (n)		845,000	845,802
			$3,403,314
Multi-Family Housing Revenue – 14.5%
Arlington County, VA, Industrial Development Authority Multi-Family Housing Rev. (Park Shirlington Apartments), “A”, 5%, 1/01/2026	$	4,000,000	$4,062,150
Chesapeake, VA Redevelopment & Housing Authority, Multi-Family Housing Rev. (Forest Cove II Project), 4.5%, 10/01/2040 (Put Date 7/01/2040)		3,000,000	3,007,244
National Finance Authority, NH, Municipal Certificates, “1-A”, 4.375%, 9/20/2036		978,154	972,006
New Mexico Mortgage Finance Authority, Multi-Family Housing Rev. (Mountain View II & III Apartments Project), HUD Section 8, 5%, 2/01/2042 (Put Date 9/01/2025)		525,000	528,807
New Mexico Mortgage Finance Authority, Multi-Family Housing Rev. (Santa Fe Apartment & Sangre de Cristo Project), HUD Section 8, 5%, 2/01/2042 (Put Date 6/01/2025)		830,000	831,615
Northampton County, VA Economic Development Authority, Multifamily Housing Rev. (Myrtle Landing Apartments), HUD Section 8, 4.5%, 4/01/2026 (Put Date 4/01/2025)		3,720,000	3,726,062
Richmond, VA, Redevelopment & Housing Authority, Multi-Family Tax-Exempt Mortgage-Backed, MTEMS (Chippenham Place Apartments), FNMA, 4.5%, 5/01/2040		3,998,218	4,029,380
Virginia Housing Development Authority, Rental Housing, “A”, 3.8%, 9/01/2044		2,000,000	1,840,729
Virginia Housing Development Authority, Rental Housing, “A”, 4.6%, 9/01/2049		1,000,000	1,000,752
Virginia Housing Development Authority, Rental Housing, “A”, 4.8%, 9/01/2059		1,000,000	1,014,955
Virginia Housing Development Authority, Rental Housing, “B”, 4.4%, 3/01/2043		710,000	717,040
Virginia Housing Development Authority, Rental Housing, “B”, 4.45%, 3/01/2045		1,535,000	1,525,630
Virginia Housing Development Authority, Rental Housing, “B”, 4.55%, 3/01/2048		2,580,000	2,574,548
Virginia Housing Development Authority, Rental Housing, “C”, 4.8%, 12/01/2049		1,000,000	1,012,100
Virginia Housing Development Authority, Rental Housing, “D”, 1.8%, 5/01/2033		500,000	400,727
Virginia Housing Development Authority, Rental Housing, “D”, 3.7%, 10/01/2038		3,000,000	2,853,061
Virginia Housing Development Authority, Rental Housing, “D”, 4.75%, 8/01/2053		4,000,000	4,048,018
Virginia Housing Development Authority, Rental Housing, “D”, 4%, 10/01/2053		2,875,000	2,581,461
Virginia Housing Development Authority, Rental Housing, “E”, 3.15%, 12/01/2049		1,635,000	1,286,384
Virginia Housing Development Authority, Rental Housing, “E”, 4.25%, 6/01/2052		3,000,000	2,885,525
Virginia Housing Development Authority, Rental Housing, “F”, 1.6%, 7/01/2033		770,000	593,026
Virginia Housing Development Authority, Rental Housing, “F”, HUD Section 8, 5.15%, 11/01/2048		4,000,000	4,131,066
Virginia Housing Development Authority, Rental Housing, “G”, 5.05%, 11/01/2047		1,000,000	1,054,056
Virginia Housing Development Authority, Rental Housing, “G”, 5.15%, 11/01/2052		2,680,000	2,803,415
Virginia Housing Development Authority, Rental Housing, “G”, 5.375%, 11/01/2064		1,250,000	1,305,100
			$50,784,857
Parking – 0.5%
Fairfax County, VA, Economic Development Authority Metrorail Parking System Project Rev., 5%, 4/01/2036	$	1,000,000	$1,034,253
Fairfax County, VA, Economic Development Authority Metrorail Parking System Project Rev., 5%, 4/01/2037		750,000	774,759
			$1,809,012
Port Revenue – 1.2%
New York Liberty Development Corp., Liberty Refunding Rev. (1 World Trade Center Project), 2.75%, 2/15/2044	$	590,000	$442,035
Virginia Port Authority Facilities Refunding Rev., “B”, 5%, 7/01/2041		750,000	753,637
Virginia Port Authority Facilities Rev, “A”, 5%, 7/01/2031 (Prerefunded 7/01/2025)		3,000,000	3,039,534
			$4,235,206
Sales & Excise Tax Revenue – 4.5%
Guam Government Business Privilege Tax Refunding, “F”, 5%, 1/01/2031	$	25,000	$26,659
Guam Government Business Privilege Tax Refunding, “F”, 4%, 1/01/2042		245,000	235,636
Hampton Roads, VA, Transportation Accountability Commission, “A”, 4%, 7/01/2057		4,000,000	3,844,848
Puerto Rico Sales Tax Financing Corp., Restructured Sales Tax Rev., “2019A-1”, 4.55%, 7/01/2040		77,000	77,288
Puerto Rico Sales Tax Financing Corp., Restructured Sales Tax Rev., “2019A-1”, 4.75%, 7/01/2053		249,000	245,374
Puerto Rico Sales Tax Financing Corp., Restructured Sales Tax Rev., “2019A-1”, 5%, 7/01/2058		7,532,000	7,502,678
Puerto Rico Sales Tax Financing Corp., Restructured Sales Tax Rev., “2019A-2”, 4.329%, 7/01/2040		476,000	469,618

3

Portfolio of Investments (unaudited) – continued

Issuer		Shares/Par	Value ($)
Municipal Bonds – continued
Sales & Excise Tax Revenue – continued
Puerto Rico Sales Tax Financing Corp., Restructured Sales Tax Rev., “2019A-2”, 4.329%, 7/01/2040	$	251,000	$247,635
Puerto Rico Sales Tax Financing Corp., Restructured Sales Tax Rev., “2019A-2”, 4.536%, 7/01/2053		6,000	5,714
Puerto Rico Sales Tax Financing Corp., Restructured Sales Tax Rev., “2019A-2”, 4.784%, 7/01/2058		122,000	120,066
Puerto Rico Sales Tax Financing Corp., Restructured Sales Tax Rev., Capital Appreciation, “2019A-1”, 0%, 7/01/2024		5,000	5,000
Puerto Rico Sales Tax Financing Corp., Restructured Sales Tax Rev., Capital Appreciation, “2019A-1”, 0%, 7/01/2029		26,000	21,455
Puerto Rico Sales Tax Financing Corp., Restructured Sales Tax Rev., Capital Appreciation, “2019A-1”, 0%, 7/01/2031		1,212,000	920,002
Puerto Rico Sales Tax Financing Corp., Restructured Sales Tax Rev., Capital Appreciation, “2019A-1”, 0%, 7/01/2033		1,160,000	806,473
Puerto Rico Sales Tax Financing Corp., Restructured Sales Tax Rev., Capital Appreciation, “2019A-1”, 0%, 7/01/2046		556,000	178,801
Wisconsin Public Finance Authority Limited Obligation Grant Rev. (American Dream at Meadowlands Project), “A”, 6.25%, 8/01/2027 (a)(d)(n)		795,000	620,100
Wisconsin Public Finance Authority Limited Obligation Grant Rev., Taxable (American Dream at Meadowlands Project), ”A“, 5.625%, 8/01/2024 (a)(d)(n)		345,000	269,100
			$15,596,447
Secondary Schools – 0.1%
District of Columbia Rev. (Rocketship D.C.), “A”, 5%, 6/01/2056 (n)	$	325,000	$309,574
Single Family Housing - State – 2.2%
Virginia Housing Development Authority, Commonwealth Mortgage, “E”, 3.9%, 7/01/2055 (Put Date 7/01/2025)	$	4,000,000	$3,998,075
Virginia Housing Development Authority, Commonwealth Mortgage, “E-1”, 4.55%, 10/01/2049		1,500,000	1,501,700
Virginia Housing Development Authority, Commonwealth Mortgage, “E-2”, 4.4%, 10/01/2044		1,000,000	1,000,588
Virginia Housing Development Authority, Commonwealth Mortgage, “E-2”, 4.55%, 10/01/2049		1,100,000	1,100,825
			$7,601,188
State & Local Agencies – 8.2%
Campbell County, VA, Industrial Development Authority, 4%, 6/01/2040	$	1,000,000	$984,177
Fairfax County, VA, Economic Development Authority Facilities Rev. (County Facilities Projects), “A”, 5%, 10/01/2033 (Prerefunded 10/01/2024)		500,000	501,673
Fairfax County, VA, Economic Development Authority Facilities Rev. (County Facilities Projects), “A”, 5%, 10/01/2034 (Prerefunded 10/01/2024)		1,000,000	1,003,346
Fairfax County, VA, Redevelopment and Housing Authority Refunding Rev. (Wedgewood Affordable Housing Acquisition), 5%, 10/01/2038		1,500,000	1,584,958
Fairfax County, VA, Redevelopment and Housing Authority Refunding Rev. (Wedgewood Affordable Housing Acquisition), 5%, 10/01/2039		1,765,000	1,853,496
Franklin County, VA, Industrial Development Authority, 3%, 10/15/2036		1,000,000	915,051
Franklin County, VA, Industrial Development Authority, 3%, 10/15/2037		580,000	524,815
Henry County, VA, Industrial Development Authority, Public Facility Leave Rev., 4%, 11/01/2045		3,000,000	2,904,128
Loudoun County, VA, Economic Development Authority Rev. (Public Facilities Project), “A”, 3%, 12/01/2037		2,000,000	1,800,122
New River Valley, VA, Regional Jail Authority Rev., 5%, 10/01/2036		3,205,000	3,306,062
Virginia College Building Authority, Educational Facilities Refunding Rev. (21st Century College and Equipment Programs), “E”, 5%, 2/01/2025		105,000	106,048
Virginia College Building Authority, Educational Facilities Rev. (21st Century College and Equipment Programs), “A”, 5%, 2/01/2038		4,000,000	4,466,257
Virginia College Building Authority, Educational Facilities Rev. (21st Century College and Equipment Programs), “D”, 5%, 2/01/2025		1,435,000	1,449,326
Virginia Public Building Authority, Facilities Rev., “A”, 4%, 8/01/2039 (Prerefunded 8/01/2029)		30,000	31,292
Virginia Public Building Authority, Facilities Rev., “A”, 4%, 8/01/2039		2,000,000	2,017,088
Washington, D.C., Metropolitan Area Transit Authority Dedicated Rev., “A”, 5%, 7/15/2045		5,000,000	5,299,157
			$28,746,996
Student Loan Revenue – 0.5%
Iowa Student Loan Liquidity Corp. Rev., “B”, 3%, 12/01/2039	$	10,000	$9,374
Iowa Student Loan Liquidity Corp. Rev., “C”, 3.5%, 12/01/2044		385,000	315,735
New Jersey Higher Education Student Assistance Authority, Senior Student Loan Rev., “B”, 4%, 12/01/2041		1,590,000	1,524,113
			$1,849,222

4

Portfolio of Investments (unaudited) – continued

Issuer		Shares/Par	Value ($)
Municipal Bonds – continued
Tax - Other – 1.2%
Chicago, IL, Board of Education, Dedicated Capital Improvement Tax Bond, 5.75%, 4/01/2035	$	1,525,000	$1,607,158
Chicago, IL, Board of Education, Dedicated Capital Improvement Tax Bond, 5%, 4/01/2045		245,000	260,319
Chicago, IL, Board of Education, Dedicated Capital Improvement Tax Bond, 5.75%, 4/01/2048		635,000	706,404
Triborough Bridge & Tunnel Authority Rev., NY, Payroll Mobility Tax (MTA Bridges and Tunnels), ”C-3“, 3%, 5/15/2051		1,965,000	1,497,467
Wisconsin Public Finance Authority Limited Obligation PILOT Rev. (American Dream at Meadowlands Project), 7%, 12/01/2050		220,000	219,194
			$4,290,542
Tax Assessment – 0.4%
Peninsula Town Center Community Development Authority, VA, Special Obligation Refunding, 5%, 9/01/2045 (n)	$	1,000,000	$945,797
Prince William County, VA, Cherry Hill Community Development Authority Rev. (Potomac Shores Project), 5.15%, 3/01/2035 (n)		500,000	502,705
			$1,448,502
Tobacco – 0.5%
Buckeye, OH, Tobacco Settlement Financing Authority Senior Asset-Backed Refunding, 2020B-2, “2”, 5%, 6/01/2055	$	970,000	$894,203
Golden State, CA, Tobacco Securitization Corp., Tobacco Settlement Rev., Taxable, “B-1”, 3.85%, 6/01/2050		950,000	890,983
			$1,785,186
Toll Roads – 6.0%
Chesapeake Bay, VA, Bridge & Tunnel District First Tier General Resolution Rev., 5%, 7/01/2051	$	3,000,000	$3,013,397
Metropolitan Washington, D.C., Airport Authority, Dulles Toll Road Rev. (Dulles Metrorail and Capital Improvement Projects), “A”, AGM, 4%, 10/01/2052		4,180,000	3,953,728
Metropolitan Washington, D.C., Airport Authority, Toll Road Subordinate Lien Refunding Rev. (Dulles Metrorail and Capital Improvement Project), “B”, 4%, 10/01/2044		3,000,000	2,922,574
Metropolitan Washington, D.C., Airport Authority, Toll Road Subordinate Lien Refunding Rev. (Dulles Metrorail and Capital Improvement Project), “B”, AGM, 4%, 10/01/2053		2,830,000	2,667,421
Virginia Small Business Financing Authority Senior Lien Refunding Rev. (95 Express Lanes LLC Project), 5%, 1/01/2035		3,000,000	3,200,826
Virginia Small Business Financing Authority Senior Lien Refunding Rev. (Elizabeth River Crossings Opco LLC Project), 4%, 1/01/2040		2,000,000	1,954,604
Virginia Small Business Financing Authority Senior Lien Rev. (Elizabeth River Crossings Opco LLC Project), 3%, 1/01/2041		3,000,000	2,458,517
Virginia Small Business Financing Authority, Senior Lien Private Activity Rev. (Transform 66 P3 Project), 5%, 12/31/2052		1,000,000	1,011,079
			$21,182,146
Transportation - Special Tax – 4.2%
Commonwealth of Virginia, Transportation Board Rev., Capital Projects, 4%, 5/15/2042	$	3,000,000	$2,984,166
Commonwealth of Virginia, Transportation Board Rev., Capital Projects, “A”, 4%, 5/15/2035		2,750,000	2,778,169
New Jersey Transportation Trust Fund Authority, “A”, 5%, 12/15/2039		190,000	201,300
New Jersey Transportation Trust Fund Authority, “CC”, 5.5%, 6/15/2050		200,000	220,471
Virginia Port Authority Rev., 5%, 7/01/2030 (Prerefunded 7/01/2025)		1,000,000	1,012,687
Virginia Port Authority Rev., 5%, 7/01/2031 (Prerefunded 7/01/2025)		500,000	506,343
Washington, D.C., Metropolitan Area Transit Authority Gross Rev., 5%, 7/01/2037		1,560,000	1,609,178
Washington, D.C., Metropolitan Area Transit Authority Gross Rev., 5%, 7/01/2038		1,560,000	1,605,960
Washington, D.C., Metropolitan Area Transit Authority Gross Rev., 5%, 7/01/2043		3,860,000	3,951,985
			$14,870,259
Universities - Colleges – 8.0%
Amherst, VA, Industrial Development Authority Rev. (Educational Facilities Sweet Briar), 5%, 9/01/2026	$	750,000	$740,879
Commonwealth of Virginia, University General Pledge Refunding Rev., “A”, 4%, 11/01/2037		745,000	749,021
Commonwealth of Virginia, University General Pledge Refunding Rev., “A”, 4%, 5/01/2048		2,475,000	2,369,856
Lexington, VA, Industrial Development Authority Educational Facilities Rev. (Washington and Lee Universities), “A”, 5%, 1/01/2043		1,000,000	1,041,223
Montgomery County, VA, Economic Development Authority Rev., Tax-Exempt (Virginia Tech Foundation), “A”, 4%, 6/01/2038		1,750,000	1,767,792
Puerto Rico Industrial, Tourist, Educational, Medical & Environmental Control Facilities Financing Authority, Educational Facilities Rev. (University Plaza Project), NPFG, 5%, 7/01/2033		355,000	353,273
Red River, TX, Education Finance Corp., Higher Education Rev. (Houston Baptist University Project), 5.5%, 10/01/2046		595,000	597,243
Roanoke, VA, Economic Development Authority, Educational Facilities Rev. (Lynchburg College), “A”, 5%, 9/01/2034		625,000	637,763
Salem, VA, Economic Development Authority, Educational Facilities (Roanoke College), 4%, 4/01/2038		120,000	113,828
Salem, VA, Economic Development Authority, Educational Facilities (Roanoke College), 4%, 4/01/2040		250,000	231,435
Salem, VA, Economic Development Authority, Educational Facilities (Roanoke College), 5%, 4/01/2049		900,000	901,792
University of Virginia, General Rev. Pledge Refunding, “B”, 5%, 4/01/2046		2,500,000	2,586,184

5

Portfolio of Investments (unaudited) – continued

Issuer		Shares/Par	Value ($)
Municipal Bonds – continued
Universities - Colleges – continued
Virginia College Building Authority, Educational Facilities Refunding Rev. (University of Richmond), 5%, 3/01/2054	$	2,000,000	$2,174,618
Virginia College Building Authority, Educational Facilities Refunding Rev. (University of Richmond), 5%, 3/01/2049		1,000,000	1,094,728
Virginia College Building Authority, Educational Facilities Rev. (Marymount University Project), “A”, 5%, 7/01/2035 (n)		1,000,000	984,090
Virginia College Building Authority, Educational Facilities Rev. (Marymount University Project), “B”, 5.25%, 7/01/2035 (n)		1,000,000	1,000,561
Virginia College Building Authority, Educational Facilities Rev. (Randolph-Macon College), 4%, 1/15/2041		1,600,000	1,572,117
Virginia College Building Authority, Educational Facilities Rev. (Regent University Project), 4%, 6/01/2036		1,280,000	1,234,644
Virginia College Building Authority, Educational Facilities Rev. (Regent University Project), 3%, 6/01/2041		470,000	364,909
Virginia College Building Authority, Educational Facilities Rev. (Regent University Project), 4%, 6/01/2046		1,250,000	1,080,794
Virginia College Building Authority, Educational Facilities Rev. (Washington & Lee University), NPFG, 5.25%, 1/01/2031		1,000,000	1,095,629
Virginia College Building Authority, Educational Facilities Rev. (Washington & Lee University), “A”, 5%, 1/01/2040 (Prerefunded 1/01/2025)		1,000,000	1,008,165
Virginia Small Business Financing Authority Rev. (Hampton University), 5.25%, 10/01/2029		2,500,000	2,507,507
Williamsburg, VA, Economic Development Authority Dining Lease Rev. (Provident Group - Williamsburg Properties LLC - William & Mary Project), “B”, AGM, 4.125%, 7/01/2048		1,000,000	966,495
Williamsburg, VA, Economic Development Authority Dining Lease Rev. (Provident Group - Williamsburg Properties LLC - William & Mary Project), “B”, AGM, 4.25%, 7/01/2058		755,000	727,537
			$27,902,083
Universities - Dormitories – 0.6%
Williamsburg, VA, Economic Development Authority Student Housing Rev. (Provident Group - Williamsburg Properties LLC - William & Mary Project), “B”, AGM, 4%, 7/01/2048	$	2,245,000	$2,141,857
Utilities - Investor Owned – 1.1%
Louisa, VA, Industrial Development Authority, Pollution Control Refunding Rev. (Virginia Electric and Power Co. Project), “A”, 3.65%, 11/01/2035 (Put Date 10/01/2027)	$	4,000,000	$3,994,965
Utilities - Municipal Owned – 2.1%
Puerto Rico Electric Power Authority Refunding Rev., “DDD”, 5%, 7/01/2020 (a)(d)	$	30,000	$15,038
Puerto Rico Electric Power Authority Refunding Rev., “DDD”, 5%, 7/01/2021 (a)(d)		320,000	160,400
Puerto Rico Electric Power Authority Refunding Rev., “DDD”, 5%, 7/01/2022 (a)(d)		535,000	268,169
Puerto Rico Electric Power Authority Refunding Rev., “PP”, 5%, 7/01/2024		25,000	25,000
Puerto Rico Electric Power Authority Rev., “A”, 5%, 7/01/2029 (a)(d)		835,000	418,544
Puerto Rico Electric Power Authority Rev., “AAA”, 5.25%, 7/01/2021 (a)(d)		60,000	30,075
Puerto Rico Electric Power Authority Rev., “AAA”, 5.25%, 7/01/2030 (a)(d)		30,000	15,038
Puerto Rico Electric Power Authority Rev., “CCC”, 5.25%, 7/01/2027 (a)(d)		305,000	152,881
Puerto Rico Electric Power Authority Rev., “DDD”, 3.65%, 7/01/2024		315,000	315,000
Puerto Rico Electric Power Authority Rev., “SS”, AGM, 4.375%, 7/01/2030		45,000	43,860
Puerto Rico Electric Power Authority Rev., “TT”, 5%, 7/01/2021 (a)(d)		145,000	72,681
Puerto Rico Electric Power Authority Rev., “TT”, 5%, 7/01/2027 (a)(d)		25,000	12,531
Puerto Rico Electric Power Authority Rev., “TT”, 5%, 7/01/2037 (a)(d)		430,000	215,537
Puerto Rico Electric Power Authority Rev., “UU”, AGM, 4.25%, 7/01/2027		185,000	181,235
Puerto Rico Electric Power Authority Rev., “VV”, NPFG, 5.25%, 7/01/2030		340,000	335,535
Puerto Rico Electric Power Authority Rev., “VV”, NPFG, 5.25%, 7/01/2034		35,000	34,625
Puerto Rico Electric Power Authority Rev., “WW”, 5.375%, 7/01/2022 (a)(d)		25,000	12,531
Puerto Rico Electric Power Authority Rev., “WW”, 5.25%, 7/01/2025 (a)(d)		60,000	30,075
Puerto Rico Electric Power Authority Rev., “ZZ”, 5.25%, 7/01/2023 (a)(d)		225,000	112,781
Puerto Rico Electric Power Authority Rev., “ZZ”, 5.25%, 7/01/2024 (a)(d)		70,000	35,088
Puerto Rico Electric Power Authority Rev., “ZZ”, 5.25%, 7/01/2026 (a)(d)		215,000	107,769
Puerto Rico Electric Power Authority Rev., Taxable, “EEE”, 6.05%, 7/01/2032 (a)(d)		175,000	87,719
Richmond, VA, Public Utility Refunding Rev., “C”, 4%, 1/15/2045		1,000,000	1,002,969
Richmond, VA, Public Utility Refunding Rev., “C”, 4.25%, 1/15/2053		2,500,000	2,524,069
Texas Municipal Power Agency, Transmission System Rev., AGM, 2%, 9/01/2033		1,455,000	1,184,736
			$7,393,886
Utilities - Other – 2.2%
Black Belt Energy Gas District, AL, Gas Project Rev., “C-1”, 5.25%, 2/01/2053 (Put Date 6/01/2029)	$	2,020,000	$2,131,780
Patriots Energy Group Financing Agency, SC, Gas Supply Rev., “B-1”, 5.25%, 2/01/2054 (Put Date 3/01/2031)		1,300,000	1,407,510
Southeast Alabama Energy Authority Commodity Supply Rev. (Project No. 5), “A”, 5.25%, 1/01/2054 (Put Date 7/01/2029)		1,850,000	1,956,225
Tennergy Corp., TN, Gas Supply Rev., “A”, 5.5%, 10/01/2053 (Put Date 12/01/2030)		1,115,000	1,191,323

6

Portfolio of Investments (unaudited) – continued

Issuer		Shares/Par	Value ($)
Municipal Bonds – continued
Utilities - Other – continued
Tennessee Energy Acquisition Corp., Gas Project Rev., “A”, 5.25%, 9/01/2026	$	1,140,000	$1,167,197
			$7,854,035
Water & Sewer Utility Revenue – 8.7%
Fairfax County, VA, Water Authority Rev., 5%, 4/01/2041	$	3,000,000	$3,110,573
Guam Waterworks Authority Rev. (Water and Wastewater System), 5%, 7/01/2040		1,045,000	1,077,525
Guam Waterworks Authority Rev. (Water and Wastewater System), “A”, 5%, 1/01/2050		430,000	441,737
Hampton Roads, VA, Sanitation District Wastewater Rev., “A”, 5%, 8/01/2034 (Prerefunded 8/01/2026)		3,000,000	3,107,058
Hampton Roads, VA, Sanitation District Wastewater Rev., “A”, 4%, 10/01/2038		1,265,000	1,279,325
Henrico County, VA, Water and Sewer System Rev., 4%, 5/01/2046		1,435,000	1,430,051
Michigan Finance Authority Local Government Loan Program Rev. (Detroit Water and Sewerage Department Sewage Disposal System Rev. Refunding Second Lien Local Project), “C-7”, NPFG, 5%, 7/01/2032		80,000	80,061
Michigan Finance Authority Local Government Loan Program Rev. (Detroit Water and Sewerage Department Water Supply System Rev. Refunding Second Lien Local Project), “D-6”, NPFG, 5%, 7/01/2036		100,000	100,076
Michigan Finance Authority Local Government Loan Program Rev. (Detroit Water and Sewerage Department Water Supply System Rev. Refunding Senior Lien Local Project), “D-1”, AGM, 5%, 7/01/2037		110,000	110,084
Spotsylvania County, VA, Water and Sewer System Rev., 4.5%, 12/01/2046		3,865,000	3,976,956
Upper Occoquan, VA, Sewage Authority Regional Sewage Rev., 3%, 7/01/2044		2,065,000	1,688,489
Virginia Resources Authority, Infrastructure Rev., Pooled Financing Program, “B”, 5%, 11/01/2025		5,000	5,016
Virginia Resources Authority, Infrastructure Rev., Pooled Financing Program, “B”, 5%, 11/01/2027		45,000	45,041
Virginia Resources Authority, Infrastructure Rev., Pooled Financing Program, “B”, 5%, 11/01/2028		40,000	40,033
Virginia Resources Authority, Infrastructure Rev., Pooled Financing Program, “C”, 4%, 11/01/2032		1,000,000	1,055,925
Virginia Resources Authority, Infrastructure Rev., Pooled Financing Program, “C”, 4%, 11/01/2033		1,500,000	1,583,165
Virginia Resources Authority, Infrastructure Rev., Pooled Financing Program, “C”, 4%, 11/01/2036		3,450,000	3,525,054
Virginia Resources Authority, Infrastructure Rev., Unrefunded Balance, 5%, 11/01/2025		45,000	45,058
Virginia Resources Authority, State Moral Obligation Rev., Pooled Financing Program, “A”, 5%, 11/01/2039		1,610,000	1,803,588
Virginia Resources Authority, State Moral Obligation Rev., Pooled Financing Program, “A”, 5%, 11/01/2041		1,030,000	1,136,513
Virginia Resources Authority, State Moral Obligation Rev., Pooled Financing Program, “A”, 5%, 11/01/2042		1,330,000	1,461,875
Virginia Resources Authority, State Moral Obligation Rev., Pooled Financing Program, “B”, 5.25%, 11/01/2047		2,350,000	2,620,312
Virginia Resources Authority, State Moral Obligation Rev., Pooled Financing Program, “B”, 4.75%, 11/01/2052		750,000	781,462
			$30,504,977
Total Municipal Bonds			$343,400,278
Bonds – 0.3%
Transportation - Services – 0.3%
Toll Road Investors Partnership II LP, Capital Appreciation, NPFG, 0%, 2/15/2025 (n)	$	557,000	$533,960
Toll Road Investors Partnership II LP, Capital Appreciation, NPFG, 0%, 2/15/2043 (n)		1,091,046	325,023
Total Bonds			$858,983
Contingent Value Instruments – 0.1%
General Obligations - General Purpose – 0.1%
Commonwealth of Puerto Rico, General Obligation Contingent Value Instrument, 11/01/2043	$	591,755	$362,450
Investment Companies (h) – 0.5%
Money Market Funds – 0.5%
MFS Institutional Money Market Portfolio, 5.39% (v)		1,775,891	$1,776,069
Other Assets, Less Liabilities – 1.3%			4,611,901
Net Assets – 100.0%			$351,009,681

(a)	Non-income producing security.
(d)	In default.
(h)	An affiliated issuer, which may be considered one in which the fund owns 5% or more of the outstanding voting securities, or a company which is under common control. At period end, the aggregate values of the fund's investments in affiliated issuers and in unaffiliated issuers were $1,776,069 and $344,621,711, respectively.

7

Portfolio of Investments (unaudited) – continued

(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 $7,608,468, representing 2.2% of net assets.
(v)	Affiliated issuer that is available only to investment companies managed by MFS. The rate quoted for the MFS Institutional Money Market Portfolio is the annualized seven-day yield of the fund at period end.

The following abbreviations are used in this report and are defined:
AAC	Ambac Assurance Corp.
AGM	Assured Guaranty Municipal
FNMA	Federal National Mortgage Assn.
NPFG	National Public Finance Guarantee Corp.

See attached supplemental information. For more information see notes to financial statements as disclosed in the most recent semiannual or annual report.

8

Supplemental Information

6/30/24 (unaudited)

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.

(1) Investment Valuations

Subject to its oversight, the fund's Board of Trustees has delegated primary responsibility for determining or causing to be determined the value of the fund’s investments to MFS as the fund's adviser, pursuant to the fund’s valuation policy and procedures which have been adopted by the adviser and approved by the Board. In accordance with Rule 2a-5 under the Investment Company Act of 1940, the Board of Trustees designated the adviser as the “valuation designee” of the fund. If the adviser, as valuation designee, determines that reliable market quotations are not readily available for an investment, the investment is valued at fair value as determined in good faith by the adviser in accordance with the adviser’s fair valuation policy and procedures.

Under the fund's valuation policy and procedures, 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. Open-end investment companies are generally valued at net asset value per share.

Under the fund’s valuation policy and procedures, market quotations are not considered to be readily available for debt instruments, floating rate loans, and many types of derivatives. These investments are generally valued at fair value based on information from third-party pricing services or otherwise determined by the adviser in accordance with the adviser’s fair valuation policy and procedures. 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, spreads and other market data. An investment may also be valued at fair value if the adviser determines that the 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 significant 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 June 30, 2024 in valuing the fund's assets and liabilities:

Financial Instruments	Level 1	Level 2	Level 3	Total
Municipal Bonds	$—	$343,762,728	$—	$343,762,728
U.S. Corporate Bonds	—	858,983	—	858,983
Mutual Funds	1,776,069	—	—	1,776,069
Total	$1,776,069	$344,621,711	$—	$346,397,780

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

(2) Investments in Affiliated Issuers

An affiliated issuer may be considered one in which the fund owns 5% or more of the outstanding voting securities, or a company which is under common control. For the purposes of this report, the following were affiliated issuers:

Affiliated Issuers	Beginning Value	Purchases	Sales Proceeds	Realized Gain (Loss)	Change in Unrealized Appreciation or Depreciation	Ending Value
MFS Institutional Money Market Portfolio	$1,322,025	$20,168,795	$19,714,180	$(475)	$(96)	$1,776,069

9

Supplemental Information (unaudited) – continued

Affiliated Issuers	Dividend Income	Capital Gain Distributions
MFS Institutional Money Market Portfolio	$36,849	$—

(3) Jurisdiction Weightings

Jurisdiction weighting percentages based on net assets, as of June 30, 2024, are as follows:

Virginia	75.1%
Washington DC	10.2%
Puerto Rico	4.5%
Illinois	1.7%
New York	1.6%
Texas	1.2%
Alabama	1.2%
Tennessee	0.7%
New Jersey	0.6%
Guam	0.5%
South Carolina	0.4%
New Mexico	0.4%
Wisconsin	0.3%
New Hampshire	0.3%
Ohio	0.3%
California	0.3%
Iowa	0.1%
Michigan	0.1%
U.S. Virgin Islands (o)	0.0%
Pennsylvania (o)	0.0%

(o) Less than 0.1%.

The jurisdiction weighting percentages include both accrued interest amounts and equivalent exposure from any derivatives holdings, if applicable.

10