MBARX
MFS Arkansas Municipal Bond Fund
MFS Municipal Series Trust

Portfolio moves

Net position changes between two of this fund's N-PORT snapshots. These are differences between point-in-time reports — not a trade log — and share counts can be affected by splits and other corporate actions.

Dec 31, 2025 → Mar 31, 2026

Expand a category to see the positions behind it, ranked by weight.

Security Shares Dec 2025 Shares Mar 2026 Δ shares End % Δ value
Fayetteville Public Facilities Board 5.25% 12/01/2046 0 500,000 500,000 0.37% $506.46K
Security Shares Dec 2025 Shares Mar 2026 Δ shares End % Δ value
PUERTO RICO ELECTRIC POWER AUTHORITY 5.0% 07-01-37 210,000 0 -210,000 0.00% -$140.18K
Puerto Rico Electric Power Authority, Series ZZ 110,000 0 -110,000 0.00% -$73.42K
PUERTO RICO ELECTRIC POWER AUTHORITY 5.0% 07-01-29 100,000 0 -100,000 0.00% -$66.75K
PUERTO RICO ELECTRIC POWER AUTHORITY 5.0% 07-01-32 100,000 0 -100,000 0.00% -$66.75K

No positions in this category.

Security Shares Dec 2025 Shares Mar 2026 Δ shares End % Δ value
ARKANSAS ST DEV FIN AUTH SF MT REGD B/E GNMA/FN 5.50000000 1,500,000 1,495,000 -5,000 1.16% -$16.76K
MFS Institutional Money Market Portfolio, Class A 1,778,251 997,387 -780,864 0.72% -$781.22K
Alabama Housing Finance Authority, Series 2024A 720,000 690,000 -30,000 0.54% -$39.25K
City of Chicago, Series 2023 A 550,000 520,000 -30,000 0.39% -$33.92K
SEARCY-REV 460,000 445,000 -15,000 0.30% -$23.52K
NFA 2022-1 A 4.375% 09-20-36 420,363 418,755 -1,607 0.30% -$6.80K
TOLL ROAD INV PART II INSURED 144A 02/43 0.00000 274,832 233,221 -41,610 0.06% -$14.32K
Security Shares Dec 2025 Shares Mar 2026 Δ shares End % Δ value
Little Rock, Arkansas, Hotel and Restaurant Gross Receipts Tax Bonds, Series 2014 3,000,000 3,000,000 0 2.17% $398
Springdale Public Facilities Board 2,820,000 2,820,000 0 2.04% -$8.71K
Arkansas Development Finance Authority 2,605,000 2,605,000 0 1.88% $355
Arkansas State University 2,500,000 2,500,000 0 1.81% -$383
Arkansas Development Finance Authority 2,470,000 2,470,000 0 1.71% $18.04K
PUERTO RICO SALES TAX FING COR REGD OID B/E 5.00000000 2,403,000 2,403,000 0 1.65% -$29.10K
City of Batesville, Series 2024B 2,250,000 2,250,000 0 1.52% -$40.27K
University of Arkansas, Series 2022, RB 2,000,000 2,000,000 0 1.49% -$9.37K
University of Arkansas (Fayetteville Campus), Series 2022 A, RB 2,000,000 2,000,000 0 1.49% -$18.18K
City of Fayetteville 2,000,000 2,000,000 0 1.45% $266
Arkansas (State of) Development Finance Authority (Baptist Memorial Health), Series 2020, Ref. RB 2,000,000 2,000,000 0 1.44% -$11.38K
North Little Rock School District No. 1 2,000,000 2,000,000 0 1.43% $10.51K
AR ST HOSP REV 5% 2/1/2038 1,900,000 1,900,000 0 1.37% -$15.86K
SPRINGDALE-B 2,000,000 2,000,000 0 1.32% -$57.91K
Texarkana Public Facilities Board, Series 2025 2,000,000 2,000,000 0 1.31% -$68.78K
UNIV OF ARKANSAS AR UNIV REVENUE 1,705,000 1,705,000 0 1.27% -$11.43K
City of Hot Springs AR Waterworks Revenue 1,750,000 1,750,000 0 1.23% -$7.75K
Conway County Regional Water Distribution District, Series 2024B 1,885,000 1,885,000 0 1.22% -$82.41K
Arkansas Development Finance Authority 1,645,000 1,645,000 0 1.19% -$333
University of Arkansas 1,500,000 1,500,000 0 1.11% $210
ARKANSAS ST DEV FIN AUTH SF MTGE REVENUE 1,455,000 1,455,000 0 1.11% -$6.53K
Conway County Regional Water Distribution District, Series 2024B 1,620,000 1,620,000 0 1.05% -$60.83K
City of Centerton, Series 2024 1,500,000 1,500,000 0 1.04% -$18.39K
City of Hot Springs 1,500,000 1,500,000 0 1.02% -$38.22K
City of Osceola, Series 2023A 1,500,000 1,500,000 0 1.00% -$54.55K
ARKANSAS ST DEV FIN AUTH REVEN REGD B/E 5.00000000 1,310,000 1,310,000 0 0.98% -$18.79K
Arkansas Development Finance Authority, Single Family Mortgage Revenue Bonds, Mortgage-Backed Securities Program, Series 2025A 1,310,000 1,310,000 0 0.94% -$1.27K
El Dorado Special School District No. 15, Series A 1,250,000 1,250,000 0 0.92% -$5.25K
City of Osceola, Series 2024 1,300,000 1,300,000 0 0.89% -$22.03K
County of Phillips 1,170,000 1,170,000 0 0.84% -$11.52K
City of Conway 1,150,000 1,150,000 0 0.83% -$185
MASSACHUSETTS ST BAY TRANSPRTN AUTH SALES TAX REVENUE 1,000,000 1,000,000 0 0.78% -$11.76K
S E ENERGY COOP DT 1,005,000 1,005,000 0 0.78% -$17.15K
ARKANSAS DEV FIN AUTH 1,000,000 1,000,000 0 0.77% -$3.97K
ARKANSAS ST DEV FIN AUTH REVENUE 1,000,000 1,000,000 0 0.77% -$4.89K
Greene County Technical School District No. T-1 1,100,000 1,100,000 0 0.75% -$66.81K
FORT SMITH SALE 5.25% 11/1/2055 1,000,000 1,000,000 0 0.74% -$19.09K
University of Arkansas 1,000,000 1,000,000 0 0.74% -$8.82K
University of Arkansas, Series 2024 1,000,000 1,000,000 0 0.74% -$15.50K
BEAVER WTR DT 1,000,000 1,000,000 0 0.74% -$17.81K
Beaver Water District of Benton & Washington Counties, Series 2025 1,000,000 1,000,000 0 0.74% -$11.52K
City of Bentonville, Series 2023 1,000,000 1,000,000 0 0.73% -$13.20K
City of Dardanelle, Series 2025 1,000,000 1,000,000 0 0.73% -$10.82K
City of Marion, Series 2025 B 1,000,000 1,000,000 0 0.73% -$11.03K
County of Madison, Series 2023 1,000,000 1,000,000 0 0.73% -$7.55K
Arkansas Development Finance Authority, Single Family Mortgage Revenue Bonds, Mortgage-Backed Securities Program, Series 2025B 1,000,000 1,000,000 0 0.73% -$4.93K
Arkansas Development Finance Authority 1,000,000 1,000,000 0 0.72% $44
State of Arkansas 1,000,000 1,000,000 0 0.72% -$34
ARKANSAS DEV FIN AUTH HLTHCARE REVENUE 1,000,000 1,000,000 0 0.72% -$5.30K
ARKANSAS ST DEV FIN AUTH SF MTGE REVENUE 940,000 940,000 0 0.71% -$761
Fort Smith School District No. 100 1,370,000 1,370,000 0 0.71% -$18.43K
Arkansas Development Finance Authority, Series 2025C 1,000,000 1,000,000 0 0.71% -$9.71K
Springdale, Arkansas, Water and Sewer Revenue Bonds, Series 2025 1,000,000 1,000,000 0 0.70% -$17.31K
Springdale, Arkansas, Water and Sewer Revenue Bonds, Series 2025 1,000,000 1,000,000 0 0.69% -$21.15K
City of Searcy, Series 2024 1,000,000 1,000,000 0 0.69% -$28.82K
Greene County Technical School District No. T-1 1,000,000 1,000,000 0 0.69% -$25.58K
City of Centerton, Series 2024 1,000,000 1,000,000 0 0.69% -$20.44K
Arkansas Development Finance Authority, Series 2024 A 975,000 975,000 0 0.68% -$26.15K
PULASKI CNTY AR HOSP REVENUE PULMED 03/48 FIXED OID 4.25 1,000,000 1,000,000 0 0.68% -$22.36K
Bentonville School District No. 6, Series 2018 B, Ref. GO Bonds 1,000,000 1,000,000 0 0.67% -$22.59K
Conway Health Facilities Board 1,000,000 1,000,000 0 0.66% -$38.51K
City of Bryant 1,000,000 1,000,000 0 0.66% -$35.64K
Pine Bluff School District No. 3, Series B 1,000,000 1,000,000 0 0.66% -$43.92K
City of Alma, Series 2023 905,000 905,000 0 0.66% -$14.58K
Earle Special School District 1,000,000 1,000,000 0 0.66% -$20.00K
University of Arkansas 1,000,000 1,000,000 0 0.63% -$53.29K
California (State of) Community Choice Financing Authority (Green Bonds), Series 2023 C, RB 815,000 815,000 0 0.62% -$3.86K
MWAA DULLES TOL 4% 10/1/2052 1,000,000 1,000,000 0 0.62% -$28.53K
Arkansas Development Finance Authority 990,000 990,000 0 0.62% -$29.85K
NY TRANS CORP(JFK INT NEW ONE)/AGM 5.13% 6/30/60@ 840,000 840,000 0 0.60% -$9.96K
Arkansas Development Finance Authority 1,250,000 1,250,000 0 0.60% -$41.19K
Maryland Community Development Administration 825,000 825,000 0 0.60% -$2.56K
Connecticut State Health & Educational Facilities Authority 1,120,000 1,120,000 0 0.59% -$20.90K
Southeast Energy Authority, Alabama, Commodity Supply Revenue Bonds, Project 5, Series 2023A 755,000 755,000 0 0.57% -$3.67K
Arkansas Development Finance Authority, Single Family Mortgage Revenue Bonds, Mortgage-Backed Securities Program, Series 2024A 795,000 795,000 0 0.56% -$5.96K
ARKANSAS DEV FIN AUTH 740,000 740,000 0 0.55% -$11.69K
City of Bentonville, Series 2025 750,000 750,000 0 0.54% -$10.21K
TN TNSUTL 05/01/2053 725,000 725,000 0 0.54% $2.44K
WEYERHAEUSER CO (MPT) 3.875% 10-15-65 750,000 750,000 0 0.54% -$4.43K
City of Batesville, Series 2024B 750,000 750,000 0 0.52% -$10.18K
ARKANSAS ST DEV FIN AUTH CAPITAL IMPT REVENUE 750,000 750,000 0 0.52% -$5.18K
HARRIS TX CED 4.125% 7/1/2052 810,000 810,000 0 0.51% -$28.82K
City of Malvern 750,000 750,000 0 0.50% -$3.93K
Benton Washington Regional Public Water Authority, Series 2024 750,000 750,000 0 0.49% -$33.44K
City of Hot Springs AR Wastewater Revenue 1,000,000 1,000,000 0 0.49% -$18.68K
Texarkana Public Facilities Board, Series 2023 685,000 685,000 0 0.49% -$4.56K
Benton Washington Regional Public Water Authority, Series 2024 750,000 750,000 0 0.48% -$28.86K
North Little Rock School District No. 1 865,000 865,000 0 0.48% -$23.73K
Bentonville School District No. 6 1,000,000 1,000,000 0 0.47% -$13.52K
TRIBOROUGH NY BRIDGE & TUNNEL AUTH PAYROLL MOBILITY TAX 890,000 890,000 0 0.47% -$765
City of Hot Springs AR Wastewater Revenue 1,000,000 1,000,000 0 0.46% -$26.43K
City of Magnolia, Series 2025B 650,000 650,000 0 0.46% -$739
City of West Memphis, Series 2024 700,000 700,000 0 0.46% -$30.72K
ARKANSAS ST DEV FIN AUTH HLTH CARE FACS REVENUE 750,000 750,000 0 0.45% -$24.43K
WI PUBTRN 5.75 12/31/2065 590,000 590,000 0 0.43% -$5.43K
Conway County Regional Water Distribution District, Series 2024B 645,000 645,000 0 0.43% -$16.98K
Arkansas State University Mid-South 625,000 625,000 0 0.43% -$14.28K
Little Rock School District 755,000 755,000 0 0.41% -$10.34K
PENNSYLVANIA ST ECON DEV FING REGD OID B/E AMT AG 5.00000000 560,000 560,000 0 0.40% $6.44K
Texarkana Public Facilities Board, Series 2023 550,000 550,000 0 0.40% -$8.92K
TEXAS MUNICIPAL POWER AGENCY AG 2.0% 09-01-33 625,000 625,000 0 0.40% -$9.72K
City of Conway AR Wasterwater Department 525,000 525,000 0 0.37% -$12.46K
UNIV OF ARKANSAS AR UNIV REVEN UNVHGR 04/52 FIXED 5 500,000 500,000 0 0.37% -$3.43K
Arkansas Tech University, Revenue Bonds, Refunding Student Fee Series 2022A 500,000 500,000 0 0.37% -$3.74K
City of Jonesboro, Series 2025 500,000 500,000 0 0.36% -$10.50K
MASS DEVEL FIN 4% 7/1/2051 620,000 620,000 0 0.36% -$10.18K
Batesville Public Facilities Board 500,000 500,000 0 0.36% -$456
County of Madison, Series 2023 500,000 500,000 0 0.36% -$13.47K
GUAM GVT WTSW 5% 1/1/2046 500,000 500,000 0 0.36% $75
PUERTO RICO SALES TAX FING COR REGD ZCP OID B/E 0.00000000 593,000 593,000 0 0.36% $5.71K
Arkansas Technical University 500,000 500,000 0 0.35% -$13.46K
City of Searcy, Series 2025 500,000 500,000 0 0.35% -$9.14K
University of Central Arkansas 550,000 550,000 0 0.34% -$12.53K
ARKANSAS DEVELOPMENT FINANCE AUTHORITY 500,000 500,000 0 0.33% $2.74K
City of Greenbrier, Series 2024 500,000 500,000 0 0.32% -$15.23K
PUERTO RICO SALES TAX FING COR REGD ZCP OID B/E 0.00000000 568,000 568,000 0 0.31% $6.32K
Benton Washington Regional Public Water Authority 500,000 500,000 0 0.31% -$18.07K
VIRGINIA ST SMALL BUSINESS FIN REGD OID B/E AMT 3.00000000 500,000 500,000 0 0.29% -$10.17K
City of Mountain View AR Sales & Use Tax 425,000 425,000 0 0.29% -$11.27K
VIRGIN ISLANDS HOTEL DEV FING REGD OID B/E 6.00000000 400,000 400,000 0 0.28% -$4.37K
OH BUCGEN 5 06/01/2055 475,000 475,000 0 0.28% -$1.48K
NY NYCDEV 5 11/15/2044 375,000 375,000 0 0.27% $608
City of Forrest City 400,000 400,000 0 0.27% -$12.70K
City of Forrest City 380,000 380,000 0 0.26% -$12.80K
City of Forrest City 370,000 370,000 0 0.25% -$9.94K
Village of Bridgeview 375,000 375,000 0 0.25% -$732
RED RIVER EDU FIN CORP TX HGR EDU REVENUE 340,000 340,000 0 0.25% -$160
City of Forrest City 350,000 350,000 0 0.24% -$10.09K
City of Greenbrier, Series 2024 345,000 345,000 0 0.22% -$15.23K
MONTGOMERY CNTY MD REVENUE REGD B/E 5.00000000 300,000 300,000 0 0.22% -$734
GOLDEN ST TOBACCO SEC 325,000 325,000 0 0.21% -$58
Hope, Arkansas, Sales and Use Tax Revenue Bonds, Series 2025 300,000 300,000 0 0.21% -$5.34K
Arkansas State University Mid-South 285,000 285,000 0 0.20% -$5.53K
CHICAGO IL BRD OF EDU DEDICATE REGD B/E 5.75000000 260,000 260,000 0 0.20% -$842
Maryland Community Development Administration 275,000 275,000 0 0.20% -$4.82K
District of Columbia 250,000 250,000 0 0.17% -$11.50K
RESTRUCTURED-SER A-2 235,000 235,000 0 0.17% $1.67K
Arkansas State Community Water System Public Water Authority, Series 2025 205,000 205,000 0 0.16% -$5.06K
Guam (Territory of) Waterworks Authority, Series 2020 A, RB 200,000 200,000 0 0.15% $1.12K
RESTRUCTURED-SER A1 216,442 216,442 0 0.13% -$3.09K
Arkansas State Community Water System Public Water Authority, Series 2025 175,000 175,000 0 0.13% -$3.34K
PUBLIC FN 5.625% 12/31/2049 200,000 200,000 0 0.13% $0
BUCKEYE TOBACCO SETTLEMENT FIN BUCGEN 06/48 FIXED 4 185,000 185,000 0 0.11% -$4.84K
Puerto Rico, General Obligation Bonds, Vintage CW NT Claims Taxable Series 2022 231,080 231,080 0 0.11% $6.93K
IOWASTUD LIQUID 3.5% 12/1/2044 @ 185,000 185,000 0 0.10% -$2.42K
Wisconsin (State of) Public Finance Authority (American Dream at Meadowlands), Series 2017, RB 180,000 180,000 0 0.09% -$12.60K
State of Illinois, Series 2020 120,000 120,000 0 0.09% -$1.96K
Port of Beaumont Navigation District 170,000 170,000 0 0.09% -$4.68K
State of Illinois, Series 2020 115,000 115,000 0 0.09% -$937
State of Illinois, Series 2023B 115,000 115,000 0 0.09% -$1.35K
RESTRUCTURED-SER A-2- 120,000 120,000 0 0.09% $855
PUERTO RICO SALES TAX FING COR REGD OID B/E 4.75000000 122,000 122,000 0 0.08% -$1.39K
RESTRUCTURED-SER A1 111,025 111,025 0 0.08% $285
Arkansas State Community Water System Public Water Authority, Series 2025 100,000 100,000 0 0.08% -$2.24K
Territory of Guam, Series F 110,000 110,000 0 0.08% -$1.40K
PUERTO RICO ELECTRIC POWER AUTHORITY 5.25% 07-01-27 145,000 145,000 0 0.07% -$544
CHICAGO IL BRD OF EDU DEDICATED CAPITAL IMPT TAX 95,000 95,000 0 0.07% $1.09K
PUERTO RICO SALES TAX FING COR REGD ZCP OID B/E 0.00000000 270,000 270,000 0 0.07% $4.42K
RESTRUCTURED-SER A1 63,265 63,265 0 0.05% -$433
UNIVERSIDAD DEL SAGRADO CORAZON INC 5.0% 10-01-42 65,000 65,000 0 0.04% -$53
MATCHING FUND SPL PURPOSE SECURITIZTN CORP 60,000 60,000 0 0.04% -$224
RESTRUCTURED-SER A1 59,992 59,992 0 0.04% -$92
UNIVERSIDAD DEL SAGRADO CORAZON INC 4.375% 10-01-31 60,000 60,000 0 0.04% -$258
RESTRUCTURED-SER A1 62,925 62,925 0 0.04% $52
RESTRUCTURED-SER A-2 62,000 62,000 0 0.04% -$641
RESTRUCTURED-CABS-SER 77,204 77,204 0 0.04% $161
RESTRUCTURED-SER A1 46,282 46,282 0 0.03% -$179
PUERTO RICO SALES TAX FING COR REGD OID B/E 4.55000000 36,000 36,000 0 0.03% -$154
CO ST HLTH FACS AUTH 30,000 30,000 0 0.02% -$90
UNIVERSITY OF PENNSYLVANIA HEALTH SYSTEM OBLIGATED GROUP 4.0% 07-01-45 20,000 20,000 0 0.01% -$349
CITY OF BRUNSWICK MD BRUNSWICK CROSSING SPECIAL TAXING DISTRICT 4.0% 07-01-29 15,000 15,000 0 0.01% $15
REF-SER VV-NATL NON 15,000 15,000 0 0.01% -$281
City of Brunswick, Series 2019 12,000 12,000 0 0.01% -$54
PUERTO RICO SALES TAX FING COR REGD ZCP OID B/E 0.00000000 12,000 12,000 0 0.01% $124
IOWASTUD LIQUID 3% 12/1/2039 @ 5,000 5,000 0 0.00% -$5
RESTRUCTURED-SER A-2 2,000 2,000 0 0.00% -$24

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