MFS Funds > MFS MUNICIPAL SERIES TRUST
MFS Municipal Intermediate Fund
$152.93M
Avg Monthly Net Assets
$183.11M
Total Assets
$1.06M
Total Liabilities
$182.06M
Net Assets
MFS Municipal Intermediate Fund is a Mutual Fund in MFS MUNICIPAL SERIES TRUST
from MFS Funds,
based in Massachusetts,
United States of America.
The fund has four share classes
and monthly net assets of $152.93M.
On August 26th, 2024 it reported 446 holdings, the largest
being Vermont Student Assistance Corp. (1.0%), Connecticut State Higher Education Supplement Loan Authority (0.9%) and Industrial Development Authority of the City of Phoenix Arizona (The) (0.9%).
Data provided by Fincoded.
Share Classes
| Name | Class/Contract ID | Ticker | Monthly Returns (2 years) |
|---|---|---|---|
| Class A | C000227170 | MIUAX | |
| Class C | C000227169 | MIUCX | |
| Class I | C000227171 | MIUIX | |
| Class R6 | C000227172 | MIURX |
Holdings
From latest NPORT-P, filed August 26th, 2024 for period ending June 30th, 2024.
Historic holdings data available from Fincoded.
| Name | Profile | Category | Country | Value $USD | # Shares | % of Fund |
|---|---|---|---|---|---|---|
| Affordable Housing Opportunities Trust, Series AH-01-1, Class A | Long | Debt | US | $225K | – | 0.12 |
| Alabama Housing Finance Authority | Long | Debt | US | $355K | – | 0.19 |
| Alaska Housing Finance Corp. | Long | Debt | US | $358K | – | 0.20 |
| Allentown Commercial and Industrial Development Authority, Series 2023 | Long | Debt | US | $525K | – | 0.29 |
| Allentown Neighborhood Improvement Zone Development Authority | Long | Debt | US | $10K | – | 0.01 |
| Antonio B Won Pat International Airport Authority | Long | Debt | GU | $48K | – | 0.03 |
| Antonio B Won Pat International Airport Authority | Long | Debt | GU | $23K | – | 0.01 |
| Arizona Industrial Development Authority | Long | Debt | US | $523K | – | 0.29 |
| Arizona Industrial Development Authority | Long | Debt | US | $503K | – | 0.28 |
| Arizona Industrial Development Authority | Long | Debt | US | $127K | – | 0.07 |
| Arizona Industrial Development Authority, Series 2024 | Long | Debt | US | $68K | – | 0.04 |
| Arizona Industrial Development Authority, Series BDS 2024 | Long | Debt | US | $817K | – | 0.45 |
| Arkansas Development Finance Authority | Long | Debt | US | $133K | – | 0.07 |
| Arkansas Development Finance Authority | Long | Debt | US | $123K | – | 0.07 |
| Atlanta Urban Residential Finance Authority, Series 2024A | Long | Debt | US | $1M | – | 0.56 |
| Austin Convention Enterprises, Inc. | Long | Debt | US | $222K | – | 0.12 |
| Austin Convention Enterprises, Inc. | Long | Debt | US | $146K | – | 0.08 |
| Austin Convention Enterprises, Inc. | Long | Debt | US | $94K | – | 0.05 |
| Austin Convention Enterprises, Inc. | Long | Debt | US | $74K | – | 0.04 |
| Beech Grove Central School Building Corp. | Long | Debt | US | $98K | – | 0.05 |
| Berks County Industrial Development Authority | Long | Debt | US | $41K | – | 0.02 |
| Black Belt Energy Gas District | Long | Debt | US | $366K | – | 0.20 |
| Black Belt Energy Gas District | Long | Debt | US | $317K | – | 0.17 |
| Black Belt Energy Gas District | Long | Debt | US | $186K | – | 0.10 |
| Black Belt Energy Gas District, Series 2023C | Long | Debt | US | $274K | – | 0.15 |
| Brazos Higher Education Authority, Inc., Series 2023-1A | Long | Debt | US | $446K | – | 0.24 |
| Build NYC Resource Corp. | Long | Debt | US | $797K | – | 0.44 |
| Build NYC Resource Corp. | Long | Debt | US | $316K | – | 0.17 |
| California Community Choice Financing Authority | Long | Debt | US | $811K | – | 0.45 |
| California Community Choice Financing Authority, Series 2023 F | Long | Debt | US | $432K | – | 0.24 |
| California Municipal Finance Authority | Long | Debt | US | $50K | – | 0.03 |
| California Municipal Finance Authority, Series 2024A | Long | Debt | US | $665K | – | 0.37 |
| California School Finance Authority | Long | Debt | US | $650K | – | 0.36 |
| California School Finance Authority | Long | Debt | US | $519K | – | 0.29 |
| California Statewide Communities Development Authority | Long | Debt | US | $130K | – | 0.07 |
| California Statewide Communities Development Authority | Long | Debt | US | $91K | – | 0.05 |
| California Statewide Communities Development Authority | Long | Debt | US | $89K | – | 0.05 |
| California Statewide Communities Development Authority | Long | Debt | US | $83K | – | 0.05 |
| Camden County Improvement Authority (The), Series 2024 | Long | Debt | US | $381K | – | 0.21 |
| Capital Area Finance Authority, Series 2023 | Long | Debt | US | $285K | – | 0.16 |
| Carthage Independent School District, Series 2024 | Long | Debt | US | $260K | – | 0.14 |
| Chandler Industrial Development Authority | Long | Debt | US | $1M | – | 0.71 |
| Chattanooga Health Educational & Housing Facility Board | Long | Debt | US | $504K | – | 0.28 |
| Chattanooga-Hamilton County Hospital Authority | Long | Debt | US | $995K | – | 0.55 |
| Chesapeake Economic Development Authority | Long | Debt | US | $305K | – | 0.17 |
| Chester County Health and Education Facilities Authority | Long | Debt | US | $377K | – | 0.21 |
| Chester County Industrial Development Authority | Long | Debt | US | $81K | – | 0.04 |
| Chicago Board of Education | Long | Debt | US | $521K | – | 0.29 |
| Chicago Board of Education | Long | Debt | US | $208K | – | 0.11 |
| Chicago Board of Education | Long | Debt | US | $71K | – | 0.04 |
| Chicago Board of Education Dedicated Capital Improvement Tax | Long | Debt | US | $1M | – | 0.59 |
| Chicago Board of Education Dedicated Capital Improvement Tax, Series 2016 | Long | Debt | US | $484K | – | 0.27 |
| Chicago Board of Education, Series 2016 A | Long | Debt | US | $403K | – | 0.22 |
| Chicago Board of Education, Series 2023A | Long | Debt | US | $538K | – | 0.30 |
| Chicago Midway International Airport | Long | Debt | US | $137K | – | 0.08 |
| Chicago Midway International Airport, Series 2023A | Long | Debt | US | $1M | – | 0.62 |
| Chicago O'Hare International Airport | Long | Debt | US | $433K | – | 0.24 |
| Chicago O'Hare International Airport | Long | Debt | US | $217K | – | 0.12 |
| Chicago O'Hare International Airport | Long | Debt | US | $175K | – | 0.10 |
| City of Atlantic (City of Atlantic City NJ) | Long | Debt | US | $85K | – | 0.05 |
| City of Baltimore (City of Baltimore MD) | Long | Debt | US | $456K | – | 0.25 |
| City of Chicago (City of Chicago IL) | Long | Debt | US | $1M | – | 0.59 |
| City of Chicago (City of Chicago IL) | Long | Debt | US | $133K | – | 0.07 |
| City of Chicago (City of Chicago IL) | Long | Debt | US | $104K | – | 0.06 |
| City of Chicago (City of Chicago IL) | Long | Debt | US | $45K | – | 0.02 |
| City of Dallas Housing Finance Corp. | Long | Debt | US | $143K | – | 0.08 |
| City of Dallas, Series 2023 (City of Dallas TX) | Long | Debt | US | $191K | – | 0.11 |
| City of East Moline (City of East Moline IL) | Long | Debt | US | $245K | – | 0.13 |
| City of Farmington (City of Farmington NM) | Long | Debt | US | $1M | – | 0.55 |
| City of Forsyth, Series 2010A (City of Forsyth MT) | Long | Debt | US | $406K | – | 0.22 |
| City of Galveston, Series 2023 (City of Galveston TX Wharves & Terminal Revenue) | Long | Debt | US | $811K | – | 0.45 |
| City of Grand Forks (City of Grand Forks ND) | Long | Debt | US | $830K | – | 0.46 |
| City of Horace (City of Horace ND) | Long | Debt | US | $589K | – | 0.32 |
| City of Houston (City of Houston TX Hotel Occupancy Tax & Special Revenue) | Long | Debt | US | $61K | – | 0.03 |
| City of Houston, Series 2023A (City of Houston TX Airport System Revenue) | Long | Debt | US | $718K | – | 0.39 |
| City of Jackson (City of Jackson TN) | Long | Debt | US | $395K | – | 0.22 |
| City of Jackson (City of Jackson TN) | Long | Debt | US | $10K | – | 0.01 |
| City of Manhattan (City of Manhattan KS) | Long | Debt | US | $125K | – | 0.07 |
| City of Mapleton City (City of Mapleton City UT) | Long | Debt | US | $198K | – | 0.11 |
| City of Pompano Beach (City of Pompano Beach FL) | Long | Debt | US | $537K | – | 0.29 |
| City of Pompano Beach (City of Pompano Beach FL) | Long | Debt | US | $93K | – | 0.05 |
| City of Pompano Beach, Series 2021 B1 (City of Pompano Beach FL) | Long | Debt | US | $32K | – | 0.02 |
| City of Salt Lake City, Series 2023A (City of Salt Lake City UT Airport Revenue) | Long | Debt | US | $1M | – | 0.62 |
| City of Topeka, Kansas Health Care Facilities (City of Topeka KS) | Long | Debt | US | $739K | – | 0.41 |
| City of Watertown (City of Watertown WI) | Long | Debt | US | $75K | – | 0.04 |
| City of Whiting (City of Whiting IN) | Long | Debt | US | $752K | – | 0.41 |
| Coconino County Pollution Control Corp. | Long | Debt | US | $154K | – | 0.08 |
| Colorado Health Facilities Authority | Long | Debt | US | $1M | – | 0.62 |
| Colorado Health Facilities Authority | Long | Debt | US | $124K | – | 0.07 |
| Columbus Metropolitan Housing Authority, Series 2024 | Long | Debt | US | $998K | – | 0.55 |
| Columbus Metropolitan Housing Authority, Series 2024 | Long | Debt | US | $187K | – | 0.10 |
| Commonwealth of Puerto Rico | Long | Debt | PR | $313K | – | 0.17 |
| Commonwealth of Puerto Rico | Long | Debt | PR | $105K | – | 0.06 |
| Commonwealth of Puerto Rico | Long | Debt | PR | $45K | – | 0.02 |
| Commonwealth of Puerto Rico | Long | Debt | PR | $39K | – | 0.02 |
| Commonwealth of Puerto Rico | Long | Debt | PR | $38K | – | 0.02 |
| Commonwealth of Puerto Rico | Long | Debt | PR | $38K | – | 0.02 |
| Commonwealth of Puerto Rico | Long | Debt | PR | $33K | – | 0.02 |
| Commonwealth of Puerto Rico | Long | Debt | PR | $29K | – | 0.02 |
| Commonwealth of Puerto Rico | Long | Debt | PR | $6K | – | 0.00 |
| Connecticut Housing Finance Authority | Long | Debt | US | $611K | – | 0.34 |
| Connecticut State Health & Educational Facilities Authority | Long | Debt | US | $974K | – | 0.54 |
| Connecticut State Higher Education Supplement Loan Authority | Long | Debt | US | $2M | – | 0.89 |
| Connecticut State Higher Education Supplement Loan Authority | Long | Debt | US | $251K | – | 0.14 |
| Cook County Community College District No. 508, Series 2024 | Long | Debt | US | $1M | – | 0.60 |
| County of Allen (County of Allen OH Hospital Facilities Revenue) | Long | Debt | US | $533K | – | 0.29 |
| County of Clark Department of Aviation | Long | Debt | US | $467K | – | 0.26 |
| County of Dorchester, Series 2023 (County of Dorchester SC) | Long | Debt | US | $408K | – | 0.22 |
| County of Dorchester, Series 2023 (County of Dorchester SC) | Long | Debt | US | $276K | – | 0.15 |
| County of Hamilton, Series 2023A (County of Hamilton OH) | Long | Debt | US | $778K | – | 0.43 |
| County of Jefferson (County of Jefferson AL Sewer Revenue) | Long | Debt | US | $824K | – | 0.45 |
| County of Miami-Dade Seaport Department | Long | Debt | US | $1M | – | 0.59 |
| County of Owen, Series 2020 (County of Owen KY) | Long | Debt | US | $276K | – | 0.15 |
| County of Pasco (County of Pasco FL) | Long | Debt | US | $1M | – | 0.63 |
| County of Trimble, Series 2023 A (County of Trimble KY) | Long | Debt | US | $347K | – | 0.19 |
| County of Trimble, Series 2023A (County of Trimble KY) | Long | Debt | US | $211K | – | 0.12 |
| County of Washoe, Series 2016 F (County of Washoe NV) | Long | Debt | US | $115K | – | 0.06 |
| Cuyahoga Metropolitan Housing Authority | Long | Debt | US | $350K | – | 0.19 |
| Cuyahoga Metropolitan Housing Authority | Long | Debt | US | $201K | – | 0.11 |
| DeKalb County Development Authority, Series 2024A | Long | Debt | US | $256K | – | 0.14 |
| DeKalb County Housing Authority, Series 2024 | Long | Debt | US | $827K | – | 0.45 |
| Delaware State Housing Authority, Series 2024 A | Long | Debt | US | $1M | – | 0.59 |
| Delaware State Housing Authority, Series BDS 2023 | Long | Debt | US | $766K | – | 0.42 |
| Delaware Valley Regional Finance Authority | Long | Debt | US | $741K | – | 0.41 |
| Detroit Downtown Development Authority, Series 2018 A | Long | Debt | US | $100K | – | 0.06 |
| Development Authority of Burke County (The) | Long | Debt | US | $251K | – | 0.14 |
| District of Columbia | Long | Debt | US | $243K | – | 0.13 |
| District of Columbia | Long | Debt | US | $99K | – | 0.05 |
| District of Columbia Housing Finance Agency | Long | Debt | US | $258K | – | 0.14 |
| District of Columbia Housing Finance Agency, Series 2024 | Long | Debt | US | $339K | – | 0.19 |
| District of Columbia Housing Finance Agency, Series 2024 A2 | Long | Debt | US | $1M | – | 0.69 |
| District of Columbia, Series 2024A | Long | Debt | US | $259K | – | 0.14 |
| Dowdell Public Utility District (Dowdell Public Utility District/TX) | Long | Debt | US | $190K | – | 0.10 |
| Doylestown Hospital Authority, Series 2019A | Long | Debt | US | $8K | – | 0.00 |
| Doylestown Hospital Authority, Series 2024 | Long | Debt | US | $103K | – | 0.06 |
| Duluth Economic Development Authority | Long | Debt | US | $120K | – | 0.07 |
| Dutchess County Local Development Corp. | Long | Debt | US | $335K | – | 0.18 |
| East Bethlehem Township Municipal Authority | Long | Debt | US | $147K | – | 0.08 |
| El Paso County Hospital District | Long | Debt | US | $100K | – | 0.05 |
| Energy Southeast A Cooperative District, Series 2023B-1 | Long | Debt | US | $379K | – | 0.21 |
| Everett Housing Authority (Everett Housing Authority/WA) | Long | Debt | US | $202K | – | 0.11 |
| FHLMC Multifamily Structured Pass-Through Certificates, Series 2024-ML21, Class AUS (FHLMC Multifamily ML Certificates) | Long | ABS-mortgage backed security | US | $392K | – | 0.22 |
| FHLMC Structured Pass-Through Certificates | Long | ABS-mortgage backed security | US | $370K | – | 0.20 |
| Finance Authority of Maine, Series CL A 2024A-1 | Long | Debt | US | $1M | – | 0.57 |
| Florida Development Finance Corp. | Long | Debt | US | $476K | – | 0.26 |
| Florida Higher Educational Facilities Financial Authority | Long | Debt | US | $496K | – | 0.27 |
| Florida Housing Finance Corp. | Long | Debt | US | $403K | – | 0.22 |
| Florida Housing Finance Corp., Series 2023 B | Long | Debt | US | $457K | – | 0.25 |
| Genesee County Funding Corp. (The) | Long | Debt | US | $706K | – | 0.39 |
| Glendale Industrial Development Authority | Long | Debt | US | $4K | – | 0.00 |
| Great Pond Improvement District | Long | Debt | US | $915K | – | 0.50 |
| Greater Asheville Regional Airport Authority | Long | Debt | US | $352K | – | 0.19 |
| Guam Government Waterworks Authority | Long | Debt | GU | $392K | – | 0.22 |
| Guam Government Waterworks Authority | Long | Debt | GU | $305K | – | 0.17 |
| Harlandale Independent School District | Long | Debt | US | $75K | – | 0.04 |
| Health Educational and Housing Facility Board of the City of Memphis (The), Series 2020 (Health Educational and Housing Facility Board of the City of Memphis/the) | Long | Debt | US | $1M | – | 0.55 |
| Horizon Regional Municipal Utility District | Long | Debt | US | $199K | – | 0.11 |
| Hospital Facilities Authority of Multnomah County Oregon | Long | Debt | US | $4K | – | 0.00 |
| Idaho Housing & Finance Association | Long | Debt | US | $762K | – | 0.42 |
| Idaho Housing & Finance Association | Long | Debt | US | $60K | – | 0.03 |
| Idaho Housing & Finance Association, Series 2023A | Long | Debt | US | $373K | – | 0.20 |
| Idaho Housing & Finance Association, Series 2024 A | Long | Debt | US | $422K | – | 0.23 |
| Idaho Housing & Finance Association, Series 2024 A | Long | Debt | US | $219K | – | 0.12 |
| Illinois Finance Authority | Long | Debt | US | $877K | – | 0.48 |
| Illinois Finance Authority | Long | Debt | US | $656K | – | 0.36 |
| Illinois Finance Authority | Long | Debt | US | $69K | – | 0.04 |
| Illinois Finance Authority | Long | Debt | US | $27K | – | 0.01 |
| Illinois Finance Authority | Long | Debt | US | $4K | – | 0.00 |
| Illinois Finance Authority, Series 2020 | Long | Debt | US | $250K | – | 0.14 |
| Illinois Housing Development Authority | Long | Debt | US | $500K | – | 0.27 |
| Illinois Housing Development Authority | Long | Debt | US | $325K | – | 0.18 |
| Illinois State Toll Highway Authority | Long | Debt | US | $111K | – | 0.06 |
| Indiana County Industrial Development Authority | Long | Debt | US | $478K | – | 0.26 |
| Indiana County Industrial Development Authority | Long | Debt | US | $472K | – | 0.26 |
| Indiana Finance Authority | Long | Debt | US | $848K | – | 0.47 |
| Indiana Finance Authority | Long | Debt | US | $202K | – | 0.11 |
| Indiana Finance Authority | Long | Debt | US | $29K | – | 0.02 |
| Indiana Secondary Market for Education Loans, Inc. | Long | Debt | US | $1M | – | 0.57 |
| Indianapolis Local Public Improvement Bond Bank, Series 2023E | Long | Debt | US | $554K | – | 0.30 |
| Industrial Development Authority of the City of Phoenix Arizona (The) | Long | Debt | US | $203K | – | 0.11 |
| Industrial Development Authority of the City of Phoenix Arizona (The), Series 2013 | Long | Debt | US | $2M | – | 0.88 |
| Industrial Development Authority of the City of St Louis Missouri (The), Series 2024A | Long | Debt | US | $457K | – | 0.25 |
| Industrial Development Authority of the County of Pima (The) | Long | Debt | US | $248K | – | 0.14 |
| Industrial Development Authority of the County of Pima (The), Series 2023B | Long | Debt | US | $383K | – | 0.21 |
| Industrial Development Board of the City of Mobile Alabama | Long | Debt | US | $1M | – | 0.55 |
| Infirmary Health System Special Care Facilities Financing Authority of Mobile | Long | Debt | US | $1M | – | 0.60 |
| Iowa Student Loan Liquidity Corp. | Long | Debt | US | $94K | – | 0.05 |
| Iowa Student Loan Liquidity Corp. | Long | Debt | US | $5K | – | 0.00 |
| Iowa Student Loan Liquidity Corp., Series 2023 B | Long | Debt | US | $623K | – | 0.34 |
| Jacksonville Housing Authority, Series 2024 | Long | Debt | US | $1M | – | 0.80 |
| James City County Economic Development Authority, Series 2024 C-3 | Long | Debt | US | $754K | – | 0.41 |
| Kentucky Higher Education Student Loan Corp. | Long | Debt | US | $521K | – | 0.29 |
| Kentucky State University | Long | Debt | US | $10K | – | 0.01 |
| Knox County Health Educational & Housing Facility Board | Long | Debt | US | $1M | – | 0.55 |
| Knox County Health Educational & Housing Facility Board | Long | Debt | US | $760K | – | 0.42 |
| Knox County Health Educational & Housing Facility Board | Long | Debt | US | $70K | – | 0.04 |
| Knox County Health Educational & Housing Facility Board, Series 2024 B-1 | Long | Debt | US | $320K | – | 0.18 |
| Knox County Health Educational & Housing Facility Board, Series 2024A-1 | Long | Debt | US | $1M | – | 0.60 |
| Lamar Consolidated Independent School District | Long | Debt | US | $107K | – | 0.06 |
| Lamar Consolidated Independent School District | Long | Debt | US | $79K | – | 0.04 |
| Lee County Industrial Development Authority (Lee County Industrial Development Authority/FL) | Long | Debt | US | $30K | – | 0.02 |
| Lee County Industrial Development Authority (Lee County Industrial Development Authority/FL) | Long | Debt | US | $25K | – | 0.01 |
| Lehigh County General Purpose Authority, Series 2024 | Long | Debt | US | $1M | – | 0.58 |
| Los Angeles County Development Authority | Long | Debt | US | $225K | – | 0.12 |
| Los Angeles Housing Authority, Series 2024 B | Long | Debt | US | $57K | – | 0.03 |
| Los Angeles Housing Authority, Series 2024C | Long | Debt | US | $142K | – | 0.08 |
| Louisa Industrial Development Authority | Long | Debt | US | $85K | – | 0.05 |
| Main Street Natural Gas, Inc. | Long | Debt | US | $1M | – | 0.58 |
| Main Street Natural Gas, Inc. | Long | Debt | US | $775K | – | 0.43 |
| Main Street Natural Gas, Inc. | Long | Debt | US | $524K | – | 0.29 |
| Main Street Natural Gas, Inc. | Long | Debt | US | $483K | – | 0.27 |
| Maricopa County & Phoenix Industrial Development Authorities, Series 2023 A | Long | Debt | US | $320K | – | 0.18 |
| Maricopa County Pollution Control Corp. | Long | Debt | US | $14K | – | 0.01 |
| Massachusetts Development Finance Agency | Long | Debt | US | $98K | – | 0.05 |
| Massachusetts Development Finance Agency | Long | Debt | US | $85K | – | 0.05 |
| Massachusetts Development Finance Agency | Long | Debt | US | $43K | – | 0.02 |
| Massachusetts Development Finance Agency, Series 2023N | Long | Debt | US | $533K | – | 0.29 |
| Massachusetts Educational Financing Authority | Long | Debt | US | $361K | – | 0.20 |
| Massachusetts Educational Financing Authority | Long | Debt | US | $220K | – | 0.12 |
| Massachusetts Educational Financing Authority, Series 2024C | Long | Debt | US | $1M | – | 0.58 |
| Massachusetts Housing Finance Agency | Long | Debt | US | $999K | – | 0.55 |
| Massachusetts Housing Finance Agency | Long | Debt | US | $498K | – | 0.27 |
| Matagorda County Navigation District No. 1, Series 1996 | Long | Debt | US | $496K | – | 0.27 |
| Matching Fund Special Purpose Securitization Corp. | Long | Debt | VI | $101K | – | 0.06 |
| Memphis-Shelby County Industrial Development Board | Long | Debt | US | $89K | – | 0.05 |
| Memphis-Shelby County Industrial Development Board | Long | Debt | US | $77K | – | 0.04 |
| Metropolitan Government Nashville & Davidson County Health & Educational Facilities Bonds | Long | Debt | US | $1M | – | 0.55 |
| Metropolitan Nashville Airport Authority (The) | Long | Debt | US | $1M | – | 0.70 |
| Metropolitan Nashville Airport Authority (The) | Long | Debt | US | $195K | – | 0.11 |
| Metropolitan Transportation Authority | Long | Debt | US | $502K | – | 0.28 |
| Metropolitan Washington Airports Authority Aviation (Metropolitan Washington Airports Authority Aviation Revenue) | Long | Debt | US | $1M | – | 0.55 |
| MFS Institutional Money Market Portfolio, Class A | Long | Short-term investment vehicle | US | $347K | 347K | 0.19 |
| Miami-Dade County Housing Finance Authority | Long | Debt | US | $505K | – | 0.28 |
| Michigan Finance Authority | Long | Debt | US | $333K | – | 0.18 |
| Michigan Finance Authority | Long | Debt | US | $45K | – | 0.02 |
| Michigan Finance Authority | Long | Debt | US | $35K | – | 0.02 |
| Michigan Finance Authority | Long | Debt | US | $30K | – | 0.02 |
| Michigan State Housing Development Authority | Long | Debt | US | $518K | – | 0.28 |
| Michigan State Housing Development Authority | Long | Debt | US | $361K | – | 0.20 |
| Michigan State Housing Development Authority | Long | Debt | US | $68K | – | 0.04 |
| Michigan Strategic Fund | Long | Debt | US | $1M | – | 0.56 |
| Michigan Strategic Fund | Long | Debt | US | $998K | – | 0.55 |
| Minnesota Housing Finance Agency | Long | Debt | US | $203K | – | 0.11 |
| Minnesota Housing Finance Agency | Long | Debt | US | $145K | – | 0.08 |
| Minnesota Office of Higher Education | Long | Debt | US | $951K | – | 0.52 |
| Mississippi Development Bank | Long | Debt | US | $65K | – | 0.04 |
| Mississippi Home Corp., Series 2021 B | Long | Debt | US | $68K | – | 0.04 |
| Missouri Development Finance Board | Long | Debt | US | $151K | – | 0.08 |
| Missouri Housing Development Commission, Series 2023 E | Long | Debt | US | $341K | – | 0.19 |
| Monroe County Industrial Development Corp., Series 2022 | Long | Debt | US | $683K | – | 0.37 |
| Municipal Electric Authority of Georgia | Long | Debt | US | $545K | – | 0.30 |
| Municipal Electric Authority of Georgia | Long | Debt | US | $277K | – | 0.15 |
| Municipal Electric Authority of Georgia | Long | Debt | US | $275K | – | 0.15 |
| Municipal Electric Authority of Georgia | Long | Debt | US | $274K | – | 0.15 |
| Nashville Metropolitan Development & Housing Agency | Long | Debt | US | $507K | – | 0.28 |
| Nevada Housing Division | Long | Debt | US | $140K | – | 0.08 |
| New Hampshire Business Finance Authority | Long | Debt | US | $1M | – | 0.65 |
| New Hampshire Business Finance Authority | Long | Debt | US | $271K | – | 0.15 |
| New Hampshire Business Finance Authority | Long | Debt | US | $154K | – | 0.08 |
| New Hampshire Business Finance Authority | Long | Debt | US | $108K | – | 0.06 |
| New Hampshire Business Finance Authority, Series 2023 B | Long | Debt | US | $55K | – | 0.03 |
| New Hampshire Business Finance Authority, Series 2023A | Long | Debt | US | $944K | – | 0.52 |
| New Hampshire Business Finance Authority, Series 2023C | Long | Debt | US | $30K | – | 0.02 |
| New Hampshire Business Finance Authority, Series 2024 | Long | Debt | US | $189K | – | 0.10 |
| New Hampshire Business Finance Authority, Series 2024A | Long | Debt | US | $583K | – | 0.32 |
| New Hampshire Business Finance Authority, Series 2024B | Long | Debt | US | $100K | – | 0.05 |
| New Hampshire Housing Finance Authority, Series 2024 1 | Long | Debt | US | $490K | – | 0.27 |
| New Jersey Economic Development Authority | Long | Debt | US | $257K | – | 0.14 |
| New Jersey Higher Education Student Assistance Authority | Long | Debt | US | $604K | – | 0.33 |
| New Jersey Higher Education Student Assistance Authority, Series 2024 B | Long | Debt | US | $1M | – | 0.59 |
| New Mexico Mortgage Finance Authority | Long | Debt | US | $591K | – | 0.32 |
| New Mexico Mortgage Finance Authority | Long | Debt | US | $104K | – | 0.06 |
| New York City Housing Development Corp. | Long | Debt | US | $553K | – | 0.30 |
| New York State Energy Research & Development Authority | Long | Debt | US | $678K | – | 0.37 |
| New York State Environmental Facilities Corp. | Long | Debt | US | $490K | – | 0.27 |
| New York State Housing Finance Agency | Long | Debt | US | $910K | – | 0.50 |
| New York State Housing Finance Agency | Long | Debt | US | $169K | – | 0.09 |
| New York State Housing Finance Agency, Series 2024 A | Long | Debt | US | $990K | – | 0.54 |
| New York Transportation Development Corp. | Long | Debt | US | $502K | – | 0.28 |
| New York Transportation Development Corp. | Long | Debt | US | $287K | – | 0.16 |
| New York Transportation Development Corp. | Long | Debt | US | $260K | – | 0.14 |
| New York Transportation Development Corp., Series 2023 | Long | Debt | US | $808K | – | 0.44 |
| New York Transportation Development Corp., Series 2023 | Long | Debt | US | $179K | – | 0.10 |
| Norman Regional Hospital Authority | Long | Debt | US | $309K | – | 0.17 |
| North Carolina Housing Finance Agency | Long | Debt | US | $634K | – | 0.35 |
| North Carolina Medical Care Commission | Long | Debt | US | $126K | – | 0.07 |
| North Carolina Medical Care Commission, Series 2024 A | Long | Debt | US | $531K | – | 0.29 |
| North Carolina Medical Care Commission, Series 2024B-1 | Long | Debt | US | $65K | – | 0.04 |
| North Carolina State Education Assistance Authority, Series 2023A | Long | Debt | US | $60K | – | 0.03 |
| North Carolina Turnpike Authority | Long | Debt | US | $516K | – | 0.28 |
| Ohio Air Quality Development Authority | Long | Debt | US | $744K | – | 0.41 |
| Ohio Air Quality Development Authority | Long | Debt | US | $502K | – | 0.28 |
| Ohio Air Quality Development Authority | Long | Debt | US | $170K | – | 0.09 |
| Ohio Air Quality Development Authority | Long | Debt | US | $146K | – | 0.08 |
| Ohio Higher Educational Facility Commission | Long | Debt | US | $610K | – | 0.33 |
| Ohio Housing Finance Agency | Long | Debt | US | $626K | – | 0.34 |
| Ohio Housing Finance Agency | Long | Debt | US | $207K | – | 0.11 |
| Oklahoma Housing Finance Agency, Series 2023D | Long | Debt | US | $559K | – | 0.31 |
| Orange County Health Facilities Authority | Long | Debt | US | $998K | – | 0.55 |
| Orangeburg County Facilities Corp. | Long | Debt | US | $320K | – | 0.18 |
| Oregon Health & Science University | Long | Debt | US | $105K | – | 0.06 |
| Oregon State Facilities Authority, Series A | Long | Debt | US | $449K | – | 0.25 |
| Pacific County Public Healthcare Services District No. 3, Series 2024 | Long | Debt | US | $547K | – | 0.30 |
| Palm Beach County Health Facilities Authority | Long | Debt | US | $737K | – | 0.40 |
| Palm Beach County Health Facilities Authority | Long | Debt | US | $369K | – | 0.20 |
| Palm Beach County Health Facilities Authority | Long | Debt | US | $299K | – | 0.16 |
| Patriots Energy Group Financing Agency, Series 2023 SUB B-1 | Long | Debt | US | $704K | – | 0.39 |
| Pecos Barstow Toyah Independent School District, Series 2023 | Long | Debt | US | $2M | – | 0.87 |
| Pennsylvania Economic Development Financing Authority | Long | Debt | US | $1M | – | 0.59 |
| Pennsylvania Economic Development Financing Authority | Long | Debt | US | $505K | – | 0.28 |
| Pennsylvania Economic Development Financing Authority | Long | Debt | US | $152K | – | 0.08 |
| Pennsylvania Economic Development Financing Authority | Long | Debt | US | $84K | – | 0.05 |
| Pennsylvania Economic Development Financing Authority Parking System, Series 2024 C (Pennsylvania Economic Development Financing Authority Parking System Revenue) | Long | Debt | US | $1M | – | 0.59 |
| Pennsylvania Economic Development Financing Authority, Series 2023B-2 | Long | Debt | US | $1M | – | 0.58 |
| Pennsylvania Higher Education Assistance Agency | Long | Debt | US | $204K | – | 0.11 |
| Pennsylvania Higher Education Assistance Agency | Long | Debt | US | $8K | – | 0.00 |
| Pennsylvania Higher Education Assistance Agency, Series 2024-1A | Long | Debt | US | $677K | – | 0.37 |
| Pennsylvania Housing Finance Agency | Long | Debt | US | $628K | – | 0.34 |
| Pennsylvania Housing Finance Agency | Long | Debt | US | $234K | – | 0.13 |
| Philadelphia Authority for Industrial Development | Long | Debt | US | $104K | – | 0.06 |
| Plaza at Noah's Ark Community Improvement District | Long | Debt | US | $122K | – | 0.07 |
| Poplar Bluff Regional Transportation Development District Sales Tax (Poplar Bluff Regional Transportation Development District Sales Tax Revenue) | Long | Debt | US | $95K | – | 0.05 |
| Poplar Bluff Regional Transportation Development District Sales Tax, Series 2023A (Poplar Bluff Regional Transportation Development District Sales Tax Revenue) | Long | Debt | US | $20K | – | 0.01 |
| Port Authority of Houston of Harris County Texas | Long | Debt | US | $1M | – | 0.56 |
| Port of Beaumont Industrial Development Authority | Long | Debt | US | $173K | – | 0.10 |
| Port of Portland, Series 22 (Port of Portland OR Airport Revenue) | Long | Debt | US | $690K | – | 0.38 |
| Private Colleges & Universities Authority | Long | Debt | US | $1M | – | 0.55 |
| Public Finance Authority | Long | Debt | US | $803K | – | 0.44 |
| Public Finance Authority | Long | Debt | US | $746K | – | 0.41 |
| Public Finance Authority | Long | Debt | US | $523K | – | 0.29 |
| Public Finance Authority | Long | Debt | US | $310K | – | 0.17 |
| Public Finance Authority | Long | Debt | US | $272K | – | 0.15 |
| Public Finance Authority | Long | Debt | US | $155K | – | 0.09 |
| Public Finance Authority | Long | Debt | US | $82K | – | 0.04 |
| Public Finance Authority, Series 2015 | Long | Debt | US | $157K | – | 0.09 |
| Public Finance Authority, Series 2017A | Long | Debt | US | $253K | – | 0.14 |
| Puerto Rico Commonwealth Aqueduct & Sewer Authority | Long | Debt | PR | $504K | – | 0.28 |
| Puerto Rico Electric Power Authority | Long | Debt | PR | $130K | – | 0.07 |
| Puerto Rico Electric Power Authority | Long | Debt | PR | $83K | – | 0.05 |
| Puerto Rico Electric Power Authority | Long | Debt | PR | $65K | – | 0.04 |
| Puerto Rico Electric Power Authority | Long | Debt | PR | $50K | – | 0.03 |
| Puerto Rico Electric Power Authority | Long | Debt | PR | $45K | – | 0.02 |
| Puerto Rico Electric Power Authority | Long | Debt | PR | $35K | – | 0.02 |
| Puerto Rico Electric Power Authority | Long | Debt | PR | $33K | – | 0.02 |
| Puerto Rico Electric Power Authority | Long | Debt | PR | $30K | – | 0.02 |
| Puerto Rico Electric Power Authority | Long | Debt | PR | $25K | – | 0.01 |
| Puerto Rico Electric Power Authority | Long | Debt | PR | $20K | – | 0.01 |
| Puerto Rico Electric Power Authority | Long | Debt | PR | $20K | – | 0.01 |
| Puerto Rico Electric Power Authority | Long | Debt | PR | $20K | – | 0.01 |
| Puerto Rico Electric Power Authority | Long | Debt | PR | $10K | – | 0.01 |
| Puerto Rico Electric Power Authority | Long | Debt | PR | $10K | – | 0.01 |
| Puerto Rico Electric Power Authority | Long | Debt | PR | $5K | – | 0.00 |
| Puerto Rico Electric Power Authority | Long | Debt | PR | $5K | – | 0.00 |
| Puerto Rico Electric Power Authority | Long | Debt | PR | $5K | – | 0.00 |
| Puerto Rico Electric Power Authority, Series VV | Long | Debt | PR | $10K | – | 0.01 |
| Puerto Rico Electric Power Authority, Series WW | Long | Debt | PR | $8K | – | 0.00 |
| Puerto Rico Electric Power Authority, Series WW | Long | Debt | PR | $5K | – | 0.00 |
| Puerto Rico Sales Tax Financing Corp. Sales Tax (Puerto Rico Sales Tax Financing Corp. Sales Tax Revenue) | Long | Debt | PR | $453K | – | 0.25 |
| Puerto Rico Sales Tax Financing Corp. Sales Tax (Puerto Rico Sales Tax Financing Corp. Sales Tax Revenue) | Long | Debt | PR | $163K | – | 0.09 |
| Puerto Rico Sales Tax Financing Corp. Sales Tax (Puerto Rico Sales Tax Financing Corp. Sales Tax Revenue) | Long | Debt | PR | $38K | – | 0.02 |
| Puerto Rico Sales Tax Financing Corp. Sales Tax (Puerto Rico Sales Tax Financing Corp. Sales Tax Revenue) | Long | Debt | PR | $23K | – | 0.01 |
| Puerto Rico Sales Tax Financing Corp. Sales Tax (Puerto Rico Sales Tax Financing Corp. Sales Tax Revenue) | Long | Debt | PR | $20K | – | 0.01 |
| Puerto Rico Sales Tax Financing Corp. Sales Tax | Long | Debt | PR | $2K | – | 0.00 |
| Puerto Rico Sales Tax Financing Corp. Sales Tax (Puerto Rico Sales Tax Financing Corp. Sales Tax Revenue) | Long | Debt | PR | $952.28 | – | 0.00 |
| Rhode Island Housing & Mortgage Finance Corp. | Long | Debt | US | $719K | – | 0.40 |
| Rhode Island Student Loan Authority | Long | Debt | US | $913K | – | 0.50 |
| Rhode Island Student Loan Authority, Series 2024 A | Long | Debt | US | $1M | – | 0.59 |
| Salem County Pollution Control Financing Authority | Long | Debt | US | $501K | – | 0.28 |
| San Francisco City & County Airport Comm-San Francisco International Airport, Series 2023 C | Long | Debt | US | $857K | – | 0.47 |
| San Francisco City & County Airport Comm-San Francisco International Airport, Series 2024 A | Long | Debt | US | $1M | – | 0.60 |
| San Francisco City & County Airport Comm-San Francisco International Airport, Series 2024 A | Long | Debt | US | $257K | – | 0.14 |
| San Francisco City & County Airport Comm-San Francisco International Airport, Series 2024 A | Long | Debt | US | $95K | – | 0.05 |
| School District of Philadelphia (The), Series 2023 A | Long | Debt | US | $463K | – | 0.25 |
| Seattle Housing Authority | Long | Debt | US | $186K | – | 0.10 |
| Shelby County Health Educational & Housing Facilities Board | Long | Debt | US | $499K | – | 0.27 |
| Sierra Vista Industrial Development Authority, Series 2023 | Long | Debt | US | $510K | – | 0.28 |
| South Carolina Jobs-Economic Development Authority | Long | Debt | US | $281K | – | 0.15 |
| South Carolina Ports Authority | Long | Debt | US | $136K | – | 0.07 |
| South Jersey Transportation Authority | Long | Debt | US | $415K | – | 0.23 |
| Southeast Alabama Gas Supply District (The), Series 2024 B | Long | Debt | US | $527K | – | 0.29 |
| Southeast Energy Authority A Cooperative District | Long | Debt | US | $1M | – | 0.58 |
| Southeast Energy Authority A Cooperative District | Long | Debt | US | $746K | – | 0.41 |
| Southeast Energy Authority A Cooperative District | Long | Debt | US | $230K | – | 0.13 |
| Southern California Public Power Authority, Series 2024 A | Long | Debt | US | $201K | – | 0.11 |
| St Johns County Industrial Development Authority | Long | Debt | US | $187K | – | 0.10 |
| St. Clair County Community Unit School District No. 187 Cahokia, Series 2024A (St Clair County Community Unit School District No. 187 Cahokia) | Long | Debt | US | $128K | – | 0.07 |
| St. Clair County Community Unit School District No. 187 Cahokia, Series 2024A (St Clair County Community Unit School District No. 187 Cahokia) | Long | Debt | US | $31K | – | 0.02 |
| State of Illinois | Long | Debt | US | $164K | – | 0.09 |
| State of Illinois Sales Tax (State of Illinois Sales Tax Revenue) | Long | Debt | US | $128K | – | 0.07 |
| State of Nevada Department of Business & Industry, Series 2020 A | Long | Debt | US | $100K | – | 0.05 |
| State of Oregon Housing & Community Services Department | Long | Debt | US | $124K | – | 0.07 |
| Tarrant County Cultural Education Facilities Finance Corp. | Long | Debt | US | $270K | – | 0.15 |
| Tempe Industrial Development Authority | Long | Debt | US | $243K | – | 0.13 |
| Tennergy Corp. | Long | Debt | US | $732K | – | 0.40 |
| Tennessee Energy Acquisition Corp. | Long | Debt | US | $780K | – | 0.43 |
| Tennessee Energy Acquisition Corp. | Long | Debt | US | $81K | – | 0.04 |
| Tennessee Housing Development Agency | Long | Debt | US | $618K | – | 0.34 |
| Territory of Guam | Long | Debt | GU | $273K | – | 0.15 |
| Territory of Guam | Long | Debt | GU | $175K | – | 0.10 |
| Territory of Guam | Long | Debt | GU | $104K | – | 0.06 |
| Territory of Guam | Long | Debt | GU | $61K | – | 0.03 |
| Territory of Guam | Long | Debt | GU | $29K | – | 0.02 |
| Texas Municipal Gas Acquisition & Supply Corp. IV, Series 2023B | Long | Debt | US | $1M | – | 0.57 |
| Texas Private Activity Bond Surface Transportation Corp., Series 2023 | Long | Debt | US | $688K | – | 0.38 |
| Texas Private Activity Bond Surface Transportation Corp., Series 2023 | Long | Debt | US | $190K | – | 0.10 |
| Texas Public Finance Authority | Long | Debt | US | $127K | – | 0.07 |
| Texas Public Finance Authority | Long | Debt | US | $75K | – | 0.04 |
| Texas Public Finance Authority, Series 2023 | Long | Debt | US | $1M | – | 0.60 |
| Toll Road Investors Partnership II LP | Long | Debt | US | $377K | – | 0.21 |
| Toll Road Investors Partnership II LP | Long | Debt | US | $143K | – | 0.08 |
| Toll Road Investors Partnership II LP | Long | Debt | US | $108K | – | 0.06 |
| Travis County Housing Finance Corp. | Long | Debt | US | $334K | – | 0.18 |
| University of Puerto Rico | Long | Debt | PR | $15K | – | 0.01 |
| Utah Housing Corp. | Long | Debt | US | $707K | – | 0.39 |
| Utah Housing Corp. | Long | Debt | US | $11K | – | 0.01 |
| Utah Housing Corp., Series 2024A | Long | Debt | US | $121K | – | 0.07 |
| Utah Infrastructure Agency | Long | Debt | US | $121K | – | 0.07 |
| Vermont Student Assistance Corp. | Long | Debt | US | $2M | – | 0.97 |
| Vermont Student Assistance Corp. | Long | Debt | US | $1M | – | 0.57 |
| Village Community Development District No. 15 | Long | Debt | US | $1M | – | 0.56 |
| Village of Bellwood, Series 2024 (Village of Bellwood IL) | Long | Debt | US | $795K | – | 0.44 |
| Village of Bridgeview (Village of Bridgeview IL) | Long | Debt | US | $220K | – | 0.12 |
| Virginia Beach Development Authority | Long | Debt | US | $99K | – | 0.05 |
| Virginia Beach Development Authority, Series 2023B-3 | Long | Debt | US | $780K | – | 0.43 |
| Virginia Housing Development Authority, Series 2024 A | Long | Debt | US | $466K | – | 0.26 |
| Virginia Small Business Financing Authority | Long | Debt | US | $501K | – | 0.28 |
| Virginia Small Business Financing Authority | Long | Debt | US | $181K | – | 0.10 |
| Waco Independent School District | Long | Debt | US | $477K | – | 0.26 |
| Waco Independent School District | Long | Debt | US | $475K | – | 0.26 |
| Washington Higher Education Facilities Authority | Long | Debt | US | $979K | – | 0.54 |
| Washington State Housing Finance Commission, Series 2023A | Long | Debt | US | $846K | – | 0.46 |
| Washington State Housing Finance Commission, Series MTEBS 2024 | Long | Debt | US | $105K | – | 0.06 |
| West Virginia Economic Development Authority | Long | Debt | US | $321K | – | 0.18 |
| West Virginia Economic Development Authority | Long | Debt | US | $143K | – | 0.08 |
| Westchester County Industrial Development Agency, Series 2023 | Long | Debt | US | $587K | – | 0.32 |
| Westmoreland County Industrial Development Authority (Westmoreland County Industrial Development Authority PA) | Long | Debt | US | $495K | – | 0.27 |
| Wisconsin Health & Educational Facilities Authority | Long | Debt | US | $978K | – | 0.54 |
| Wisconsin Health & Educational Facilities Authority | Long | Debt | US | $373K | – | 0.20 |
| Wisconsin Health & Educational Facilities Authority | Long | Debt | US | $306K | – | 0.17 |
| Wisconsin Health & Educational Facilities Authority | Long | Debt | US | $287K | – | 0.16 |
| Wisconsin Health & Educational Facilities Authority | Long | Debt | US | $217K | – | 0.12 |
| Wisconsin Health & Educational Facilities Authority | Long | Debt | US | $205K | – | 0.11 |
| Wisconsin Health & Educational Facilities Authority | Long | Debt | US | $193K | – | 0.11 |
| Wisconsin Health & Educational Facilities Authority | Long | Debt | US | $176K | – | 0.10 |
| Wisconsin Health & Educational Facilities Authority, Series 2024 B | Long | Debt | US | $1M | – | 0.60 |
| York County Economic Development Authority | Long | Debt | US | $609K | – | 0.33 |
Address
MFS MUNICIPAL SERIES TRUST
111 Huntington Avenue
Boston
Massachusetts
02199
United States of America
Websites
Directors
Clarence Otis, Jr.
James W. Kilman, Jr.
John A. Caroselli
John P. Kavanaugh
Laurie J. Thomsen
Maryanne L. Roepke
Maureen R. Goldfarb
Michael W. Roberge
Peter D. Jones
Steven E. Buller
Transfer Agents
MFS SERVICE CENTER, INC.
Pricing Services
ICE Data Pricing & Reference Data, LLC
LSEG
PricingDirect Inc.
S&P Global
Custodians
JPMorgan Chase Bank, National Association
Shareholder Servicing Agents
MFS Service Center, Inc.
Admins
MASSACHUSETTS FINANCIAL SERVICES
Brokers
N/A