MMIIX
MFS Municipal High Income Fund
MFS Series Trust III

Portfolio concentration

As of April 30, 2026 · N-PORT
Holdings
2039
Top-10 weight
8.20%
Effective holdings ?
469
Crowding ?
32.7

Holdings

As of April 30, 2026 · N-PORT
#SecurityTickerSharesValue% of fund
1 MFS Institutional Money Market Portfolio, Class A 128,169,292 $128.18M 2.37%
2 PUERTO RICO SALES TAX FING COR REGD OID B/E 5.00000000 PRCGEN 102,934,000 $99.98M 1.85%
3 TOWER HEALTH OBLIGATED GROUP 5.0% 06-30-39 BERFAC 33,839,000 $31.78M 0.59%
4 OH BUCGEN 5 06/01/2055 BUCGEN 39,235,000 $31.12M 0.58%
5 California (State of) Community Choice Financing Authority (Green Bonds), Series 2023 C, RB CCEDEV 25,510,000 $26.99M 0.50%
6 NY TRANS CORP(JFK INT NEW ONE)/AGM 5.13% 6/30/60@ 24,605,000 $24.72M 0.46%
7 New Hampshire Business Finance Authority, Series 2023A 23,475,000 $24.29M 0.45%
8 City of Chicago, Series 2021A CHI 23,325,000 $24.08M 0.45%
9 NY TRANS CORP(JFK INT NEW ONE)/AGM 5.25% 6/30/60@ 23,315,000 $23.61M 0.44%
10 TOBACCO SETTLEMENT-B2 TOBGEN 158,880,000 $22.79M 0.42%
11 NOVANT HEALTH OBLIGATED GROUP 5.5% 06-01-50 19,495,000 $20.40M 0.38%
12 CHICAGO ILLIN 6% 4/1/2046 CHIEDU 19,865,000 $20.09M 0.37%
13 PENNSYLVANIA ST ECON DEV FING REGD OID B/E AMT AG 5.00000000 PASDEV 18,845,000 $18.79M 0.35%
14 AL BBEUTL 5 06/01/2036 18,150,000 $18.70M 0.35%
15 NY TRANSPRTN DEV CORP NYTTRN 17,420,000 $18.12M 0.34%
16 NY NYCDEV 5 11/15/2044 NYCDEV 17,960,000 $17.97M 0.33%
17 Wisconsin (State of) Public Finance Authority, Series 2012 B, Ref. RB 17,855,000 $17.86M 0.33%
18 MOHEG CT 608327 7.00% 2/1/2045 17,705,000 $17.85M 0.33%
19 FL ST DFC 5% 7/1/2044 @ 18,140,000 $17.65M 0.33%
20 Palm Beach County, Florida, Revenue Bonds, Provident Group - LU Properties LLC Lynn University Housing Project, Series 2021A 18,845,000 $16.61M 0.31%
21 Port of Beaumont Navigation District, Series 2024B PTBTRN 16,215,000 $16.22M 0.30%
22 JEA WTR & SWR REV-A 15,295,000 $16.15M 0.30%
23 Wisconsin (State of) Public Finance Authority (American Dream at Meadowlands), Series 2017, RB 22,105,000 $16.14M 0.30%
24 PROJECTNEW YORK TRANS NYTTRN 16,750,000 $16.07M 0.30%
25 Alachua County Health Facilities Authority, Series 2025 A 15,455,000 $16.04M 0.30%
26 Michigan State Housing Development Authority, Series 2024A 15,870,000 $15.89M 0.29%
27 New Hampshire Health and Education Facilities Authority Act, Series 2024 15,370,000 $15.35M 0.28%
28 GOLDEN ST TOBACCO SEC 16,585,000 $15.15M 0.28%
29 Jefferson (County of), AL, Series 2024, Ref. Revenue Wts. JEFUTL 14,410,000 $15.04M 0.28%
30 Energy Southeast A Cooperative District, Series B-1 ESDPWR 13,500,000 $14.73M 0.27%
31 TENNERGY CORP TN GAS REVENUE TGYPWR 10/53 ADJUSTABLE VAR 13,735,000 $14.60M 0.27%
32 MONT PA IDA 5.375% 1/1/2050 14,730,000 $14.46M 0.27%
33 TARRANT RETIRE 5.75% 12/1/2054 16,562,153 $14.32M 0.26%
34 OU MEDICINE OBLIGATED GROUP 5.5% 08-15-57 14,300,000 $14.10M 0.26%
35 New Hampshire Business Finance Authority, Series 2024A 13,730,000 $13.90M 0.26%
36 Louisiana (State of) Public Facilities Authority (I-10 Calcasieu River Bridge), Series 2024, RB 13,495,000 $13.86M 0.26%
37 IL CHIEDU 5 12/01/2042 CHIEDU 14,200,000 $13.78M 0.26%
38 NH NFADEV 11/20/2039 NFADEV 13,746,192 $13.62M 0.25%
39 SHELL POINT OBLIGATED GROUP 5.0% 11-15-54 14,005,000 $13.54M 0.25%
40 METROHEALTH SYSTEM 5.5% 02-15-52 13,520,000 $13.53M 0.25%
41 SYRACUSE PILOT 5% 1/1/2034 @ 17,535,000 $13.49M 0.25%
42 PUBLIC FIN AUTH WI REVENUE PUBGEN 06/56 FIXED 4.5 PUBGEN 17,295,000 $13.31M 0.25%
43 MWAA DULLES TOL 4% 10/1/2049 14,675,000 $12.99M 0.24%
44 FL ST DEV FIN CORP 13,760,000 $12.71M 0.24%
45 BERKS PA MUN AU 3% 6/30/2044 BERFAC 16,911,000 $12.66M 0.23%
46 OREGON ST FCS 4.90% 9/15/2035 12,160,000 $12.63M 0.23%
47 PUBLIC FIN WIS 5.50% 6/1/2055 12,100,000 $12.62M 0.23%
48 Black Belt Energy Gas District, Series 2025 A BBEUTL 12,220,000 $12.42M 0.23%
49 SOUTH CAROLINA ST HSG FIN & DEV AUTH MTGE REVENUE 11,195,000 $12.32M 0.23%
50 VIRGIN ISLANDS HOTEL DEV FING REGD OID B/E 6.00000000 12,195,000 $12.11M 0.22%
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