MBMSX
MFS Mississippi Municipal Bond Fund
MFS Municipal Series Trust

Portfolio concentration

As of March 31, 2026 · N-PORT
Holdings
130
Top-10 weight
20.95%
Effective holdings ?
77
Crowding ?
20.8

Holdings

As of March 31, 2026 · N-PORT
#SecurityTickerSharesValue% of fund
1 Jackson County Utility Authority 2,000,000 $2.00M 3.25%
2 Mississippi Home Corp., Series 2024A 1,750,000 $1.69M 2.74%
3 Mississippi Development Bank 1,500,000 $1.33M 2.15%
4 MS MDCEDU 5 06/01/2042 MDCEDU 1,250,000 $1.26M 2.05%
5 Medical Center Educational Building Corp. 1,250,000 $1.25M 2.03%
6 MS DEV BK 5.25% 1/1/2034 1,000,000 $1.11M 1.80%
7 W RANKIN UTIL AUTH 1,000,000 $1.04M 1.69%
8 Mississippi Development Bank, Series 2025 1,000,000 $1.04M 1.68%
9 Mississippi Development Bank 1,000,000 $1.03M 1.68%
10 Mississippi Development Bank 1,105,000 $1.03M 1.68%
11 PUERTO RICO SALES TAX FING COR REGD OID B/E 5.00000000 PRCGEN 1,086,000 $1.03M 1.67%
12 Mississippi Development Bank, Series 2024 1,000,000 $1.02M 1.66%
13 State of Mississippi, Series 2024 MSSGEN 1,000,000 $1.02M 1.66%
14 State of Mississippi, Series 2018A 1,000,000 $1.01M 1.65%
15 Mississippi Development Bank 1,000,000 $1.01M 1.63%
16 MS MSSDEV 5 07/01/2048 MSSDEV 1,000,000 $1.00M 1.63%
17 MISSISSIPPI ST HOME CORP SF MTGE REVENUE 1,000,000 $989.13K 1.60%
18 Mississippi Development Bank 1,000,000 $972.75K 1.58%
19 Mississippi Home Corp. 1,000,000 $955.21K 1.55%
20 MS HOSP 4% 1/1/2040 1,000,000 $954.60K 1.55%
21 Medical Center Educational Building Corp., Series 2017, Ref. RB 1,000,000 $913.08K 1.48%
22 MS MSSSFH 4.05 12/01/2047 MSSSFH 1,000,000 $909.18K 1.47%
23 Medical Center Educational Building Corp., Series 2023, RB 1,000,000 $889.61K 1.44%
24 Mississippi Home Corp. 1,000,000 $822.06K 1.33%
25 MASSACHUSETTS ST BAY TRANSPRTN AUTH SALES TAX REVENUE 750,000 $815.07K 1.32%
26 Warren County, Mississippi, Certificates of Participation, Lease Purchase Jail Project Series 2023 750,000 $806.93K 1.31%
27 Warren County, Mississippi, Certificates of Participation, Lease Purchase Jail Project Series 2023 750,000 $797.70K 1.29%
28 Mississippi Development Bank, Series 2024 750,000 $765.38K 1.24%
29 MS DEV BK SPL/AGM 6.88% 12/1/40 MSSDEV 750,000 $763.03K 1.24%
30 MS UNIV EDU CORP-A 750,000 $761.85K 1.24%
31 MS ST HOME SF 4.8% 12/1/45 750,000 $754.60K 1.22%
32 MISSISSIPPI ST HOME CORP SF MT REGD B/E GNMA/FN 4.80000000 750,000 $749.71K 1.22%
33 San Diego Unified School District, Series 2010C 1,020,000 $747.42K 1.21%
34 Mississippi Home Corp., Series 2024 C 750,000 $747.11K 1.21%
35 Mississippi Home Corp., Series 2024 E 750,000 $742.50K 1.20%
36 MS MHSG 4.55% 4/1/2042 MSSMFH 745,000 $736.18K 1.19%
37 MS MSSDEV 4 06/01/2044 MSSDEV 750,000 $719.83K 1.17%
38 State of Mississippi 770,000 $714.29K 1.16%
39 Mississippi Development Bank 750,000 $700.88K 1.14%
40 State of Mississippi, Series 2024 MSSGEN 750,000 $698.16K 1.13%
41 Mississippi State University Educational Building Corp., Series 2024A 750,000 $662.86K 1.08%
42 S E ENERGY COOP DT 560,000 $602.23K 0.98%
43 University of Mississippi Educational Building Corp., Series 2017 , Ref. RB MSUFAC 600,000 $583.54K 0.95%
44 Mississippi Home Corp., Series 2026A 500,000 $527.59K 0.86%
45 MFS Institutional Money Market Portfolio, Class A 526,050 $526.05K 0.85%
46 Little Rock School District 700,000 $524.72K 0.85%
47 Mississippi Development Bank, Series 2025 500,000 $523.15K 0.85%
48 WARREN CO-A-REF-REMK WARIMP 500,000 $515.37K 0.84%
49 Mississippi Development Bank, Special Obligation Bonds, Lamar County School District Series 2025 500,000 $511.07K 0.83%
50 Mississippi Development Bank, Series 2025 500,000 $511.07K 0.83%
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