MPOLX
MFS Alabama Municipal Bond Fund
MFS Municipal Series Trust

Portfolio concentration

As of March 31, 2026 · N-PORT
Holdings
156
Top-10 weight
16.41%
Effective holdings ?
100
Crowding ?
21.0

Holdings

As of March 31, 2026 · N-PORT
#SecurityTickerSharesValue% of fund
1 MFS Institutional Money Market Portfolio, Class A 1,620,157 $1.62M 2.30%
2 Auburn University, Series 2018 A, RB 1,500,000 $1.52M 2.15%
3 Baldwin County Public Building Authority 1,250,000 $1.19M 1.69%
4 Irondale Public Building Authority, Series 2024 1,000,000 $1.05M 1.49%
5 Jefferson (County of), AL, Series 2024, Ref. Revenue Wts. JEFUTL 1,000,000 $1.04M 1.47%
6 City of Oxford 1,000,000 $1.02M 1.44%
7 State of Alabama Docks Department 1,000,000 $1.01M 1.44%
8 Public Energy Authority of Kentucky, Gas Supply Revenue Bonds, Series 2022A-1 1,000,000 $1.01M 1.43%
9 Cherokee County Board of Education 1,000,000 $1.01M 1.43%
10 Special Care Facilities Financing Authority of the City of Pell City Alabama 1,000,000 $992.06K 1.41%
11 Mobile County Board of School Commissioners 1,000,000 $990.67K 1.40%
12 ALABAMA ST HSG FIN AUTH MF TAX REGD N/C B/E 4.45000000 1,000,000 $978.88K 1.39%
13 Lawrence County Board of Education 1,000,000 $960.45K 1.36%
14 Mobile County Board of School Commissioners 1,000,000 $945.67K 1.34%
15 INFIRMARY HLTH SYS AL SPL CARE FACS FING AUTH REVENUE 1,000,000 $940.09K 1.33%
16 DCH HLTH CARE -A-REV 1,000,000 $919.80K 1.30%
17 HLTH CARE AUTH FOR BAPTIST HLT HLTMED 11/37 FIXED 5 875,000 $914.77K 1.30%
18 Orange Beach Water Sewer & Fire Protection Authority 1,000,000 $903.19K 1.28%
19 Alabama Community College System, Series 2019 1,000,000 $866.60K 1.23%
20 City of Arab 1,120,000 $826.34K 1.17%
21 Cooper Green Mercy Health Services Authority, Series 2022, RB 810,000 $822.50K 1.17%
22 MOBILE AL 0% 2/15/2042 750,000 $811.47K 1.15%
23 City of Huntsville 750,000 $801.00K 1.13%
24 Alabama Federal Aid Highway Finance Authority, Series 2025, RB 750,000 $800.20K 1.13%
25 ALABAMA ST HIGHWAY AUTH SPL OBLIG REVENUE 750,000 $799.98K 1.13%
26 City of Huntsville 750,000 $793.90K 1.12%
27 ALABAMA ST HSG FIN AUTH SF MTG REGD B/E GNMA/FN 5.75000000 730,000 $793.88K 1.12%
28 ALABAMA ST HSG FIN AUTH SF MTG REGD B/E GNMA/FN 5.75000000 725,000 $782.52K 1.11%
29 AL HSG 6% 4/1/2055 715,000 $779.85K 1.11%
30 Birmingham-Jefferson Civic Center Authority, Series 2023A 750,000 $769.18K 1.09%
31 Alabama Community College System, Series 2025 750,000 $768.35K 1.09%
32 JACKSONVILLE PUBLIC EDUCTNL BLDG AUTH 750,000 $767.89K 1.09%
33 Prattville Waterworks Board, Series 2023 750,000 $763.31K 1.08%
34 Harvest-Monrovia Water Sewer & Fire Protection Authority, Inc., Series 2025 750,000 $760.66K 1.08%
35 Lauderdale County Agriculture Center Authority, Series 2024 750,000 $758.82K 1.08%
36 UNIV SOUTH AL 5% 4/1/2049 750,000 $757.64K 1.07%
37 PUERTO RICO SALES TAX FING COR REGD OID B/E 5.00000000 PRCGEN 796,000 $756.72K 1.07%
38 City of Fort Payne 750,000 $754.69K 1.07%
39 AL ALSSFM 4.55 10/01/2044 ALSSFM 720,000 $716.17K 1.01%
40 County of Mobile 675,000 $715.32K 1.01%
41 Madison Water & Wastewater Board 1,000,000 $697.90K 0.99%
42 Cherokee County Public Building Authority 750,000 $690.96K 0.98%
43 Alabama Community College System, Series 2024 750,000 $689.10K 0.98%
44 Cullman City Board of Education 750,000 $675.38K 0.96%
45 Limestone County Water & Sewer Authority, Series 2024 750,000 $674.48K 0.96%
46 City of Clanton 550,000 $590.07K 0.84%
47 Jacksonville Public Educational Building Authority 580,000 $582.34K 0.83%
48 Enterprise Board of Education 500,000 $541.26K 0.77%
49 City of Gadsden AL 500,000 $533.03K 0.76%
50 MONTGOMERY WTRWORKS 500,000 $532.60K 0.75%
1 / 4 Next ›

Machine-readable: JSON · Markdown. Programmatic access via the agent surface.