MFSSX Mutual Fund

NAV$9.87

AUM$231M

TER0.82%

Holdings267

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MFSSX Mutual Fund

NAV$9.87

MFS Massachusetts Municipal Bond Fund A

AUM$231M

TER0.82%

Holdings267

See how much of MFSSX you already own

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Overview Performance Chart Dividends Top Holdings All Holdings Sectors Geography Similar Compare Overlap

Showing top 50 of 241 holdings · as of Sep 30, 2026

MFSSX holdings, by weight
#	Ticker	Name	Weight	Cumulative	Shares	Mkt value	Sector	Industry
1	—	Currency Cash Cash_USD	5.98%	6.0%	24,405,847	$24.43M	-	-
2	Debt	Massachusetts School Building Authority	1.44%	7.4%	6,000,000	$5.89M	-	-
3	Debt	Massachusetts Development Finance Agency	1.26%	8.7%	5,000,000	$5.14M	-	-
4	—	Commonwealth Of Massachusetts Transportation Fund, Series 2025A	1.23%	9.9%	5,000,000	$5.02M	-	-
5	—	Massachusetts Development Finance Agency	1.18%	11.1%	5,000,000	$4.81M	-	-
6	Debt	Massachusetts Clean Water Trust/The	0.99%	12.1%	4,000,000	$4.05M	-	-
7	—	Manitoba Mar 5, 2063 4.63	0.98%	13.1%	4,000,000	$4.01M	-	-
8	—	Commonwealth of Massachusetts 5 2049-08-01	0.97%	14.0%	4,000,000	$3.97M	-	-
9	Debt	Puerto Rico Sales Tax Financing Corp SaFinancials · Diversified Financial Services	0.85%	14.9%	3,806,000	$3.48M	Financials	Diversified Financial Services
10	—	Massachusetts Development Finance Authority, Revenue Bonds, Olin College, Refunding Series 2023GFinancials · Diversified Financial Services	0.84%	15.7%	3,500,000	$3.45M	Financials	Diversified Financial Services
11	—	Tri-County Regional Vocational Technical School District/Ma 4 2044-06-01	0.84%	16.6%	4,000,000	$3.45M	-	-
12	—	Massachusetts Development Finance Agency	0.76%	17.3%	3,015,000	$3.09M	-	-
13	Debt	Massachusetts Bay Transportation Authority Sales Tax Revenue	0.75%	18.1%	3,000,000	$3.08M	-	-
14	—	Massachusetts St Dev Fin Agy R Masdev 08/50 Fixed 5.5Financials · Diversified Financial Services	0.74%	18.8%	3,000,000	$3.03M	Financials	Diversified Financial Services
15	—	Massachusetts Development Finance Agency, Revenue Bonds, Boston Children'S Hospital Series 2024T 5.25 2054-03-01Financials · Diversified Financial Services	0.74%	19.6%	3,000,000	$3.02M	Financials	Diversified Financial Services
16	—	Massachusetts St Dev Fin Agy Rev 5.25%	0.74%	20.3%	3,000,000	$3.02M	-	-
17	—	Massachusetts St Wtr Res Auth 5.258/01/2056	0.74%	21.0%	3,000,000	$3.02M	-	-
18	Debt	Town Of Wakefield Ma	0.74%	21.8%	3,000,000	$3.01M	-	-
19	—	Massachusetts State, Transportation Fund Revenue Bonds, Rail Enhancement Program, Series 2023B 5 06-01-2049Financials · Thrifts	0.73%	22.5%	3,000,000	$2.98M	Financials	Thrifts
20	Debt	Massachusetts St	0.73%	23.2%	3,000,000	$2.97M	-	-
21	Debt	Massachusetts Port Authority 5.00 07/01/2051Financials · Banks	0.72%	23.9%	3,000,000	$2.95M	Financials	Banks
22	—	Ma Port Auth-A-Amt 5 7/42	0.72%	24.7%	3,000,000	$2.96M	-	-
23	—	Commonwealth of Massachusetts Transportation Fund Revenue	0.71%	25.4%	2,850,000	$2.90M	-	-
24	—	Energy Southeast A Cooperative District 5.5000008 11/01/2053Utilities · Electric Utilities	0.70%	26.1%	2,720,000	$2.87M	Utilities	Electric Utilities
25	Debt	Commonwealth Of MassachusettsFinancials · Diversified Financial Services	0.70%	26.8%	2,930,000	$2.86M	Financials	Diversified Financial Services
26	Debt	Massachusetts Bay Transportation Authority Sales Tax Revenue	0.70%	27.5%	3,000,000	$2.88M	-	-
27	Debt	Massachusetts St Hsg Fin Agy Hsg Rev 5.13%	0.70%	28.2%	3,000,000	$2.87M	-	-
28	—	Ma Hsg Fin Agy -B 01/12/2036	0.69%	28.9%	3,000,000	$2.81M	-	-
29	—	Massachusetts Housing Finance Agency, Series 249	0.68%	29.5%	3,000,000	$2.76M	-	-
30	—	Massachusetts Development Finance AgencyFinancials · Diversified Financial Services	0.67%	30.2%	2,690,000	$2.74M	Financials	Diversified Financial Services
31	Debt	Massachusetts St Dev Fin Agy R	0.65%	30.9%	2,665,000	$2.67M	-	-
32	—	Massachusetts Development Finance Agency	0.63%	31.5%	2,550,000	$2.57M	-	-
33	—	Ma Hsg Fin Agy-225 01/12/2052	0.63%	32.1%	2,445,000	$2.55M	-	-
34	—	Nashoba Regional School District 4 2045-06-15	0.63%	32.8%	3,010,000	$2.59M	-	-
35	—	Massachusetts Housing Finance Agency, Single Family Housing Revenue Bonds, Social Series 2024-234	0.62%	33.4%	2,750,000	$2.52M	-	-
36	—	New Bedford Ma 4 2047-09-01	0.61%	34.0%	3,000,000	$2.50M	-	-
37	Debt	Massachusetts Development Finance AgencyFinancials · Thrifts	0.59%	34.6%	2,850,000	$2.39M	Financials	Thrifts
38	—	Massachusetts St Eductnl Fing Auth	0.59%	35.2%	3,285,000	$2.41M	-	-
39	Debt	California Cmnty Choice Fing AFinancials · Diversified Financial Services	0.58%	35.8%	2,250,000	$2.35M	Financials	Diversified Financial Services
40	Debt	Commonwealth Of Massachusetts	0.57%	36.3%	2,225,000	$2.31M	-	-
41	—	Massachusetts St Dev Fin Agy R Masdev 07/47 Fixed 5	0.56%	36.9%	2,300,000	$2.27M	-	-
42	—	Massachusetts Clean Water Trust (the)	0.54%	37.4%	2,000,000	$2.19M	-	-
43	Debt	Massachusetts Ed Ln Auth Ed Ln	0.54%	38.0%	3,000,000	$2.22M	-	-
44	—	Massachusetts St Dev Fin Agy R Masdev 10/49 Fixed 6	0.52%	38.5%	2,000,000	$2.12M	-	-
45	Debt	Southeast Energy Authority A Cooperative District (Tender Option Bond Trust Receipts/Certificates) Series 2023-2 5.25%, 01/01/54	0.52%	39.0%	2,065,000	$2.14M	-	-
46	—	Tennessee St Energy Acquisitio Regd V/R B/E 5.00000000Utilities · Power & Renewables	0.51%	39.5%	2,020,000	$2.08M	Utilities	Power & Renewables
47	Debt	Massachusetts State, General Obligation Bonds, Consolidated Series 2024BFinancials · Banks	0.51%	40.0%	2,115,000	$2.09M	Financials	Banks
48	—	Ma Dev Fin Agy -T 01/03/2054Financials · Thrifts	0.50%	40.5%	2,500,000	$2.04M	Financials	Thrifts
49	—	Massachusetts Development Finance Agency, Revenue Bonds, Northeastern University, Series 2024A 5 2042-10-01	0.50%	41.0%	2,000,000	$2.06M	-	-
50	—	Massachusetts Development Finance Agency 5.5 2055-07-01	0.50%	41.5%	2,000,000	$2.04M	-	-
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MFSSX Mutual Fund All Holdings

MFSSX holdings total 267 positions. The top 10 holdings account for 15.7% of the fund, led by Currency Cash Cash_USD at 6.0%, Massachusetts School Building Authority 5 02/15/2050 at 1.4%, Massachusetts Development Finance Agency 5 07/01/2042 at 1.3%.

MFSSX portfolio concentration is well-diversified, with the top 10 representing 15.7% of total assets. The largest sector exposure is Financials at 14.1%.

MFSSX sectors provide a detailed breakdown. MFSSX overlap shows how holdings compare to other funds in your portfolio.