MFS Massachusetts Municipal Bond Fund is a registered fund series of MFS Municipal Series Trust (series S000002534). Net assets $408.8M as of 2026-03-31.
Showing 15 of 200 holdings by value.
| Holding | Ticker | Value | % of fund |
|---|---|---|---|
| MFS Institutional Money Market Portfolio | — | $6.8M | 165.86% |
| Massachusetts Development Finance Agency | — | $5.5M | 135.01% |
| Commonwealth of Massachusetts Transportation Fund Revenue | — | $5.2M | 128.35% |
| Massachusetts Development Finance Agency | — | $5.0M | 122.69% |
| Massachusetts Clean Water Trust (The) | — | $4.2M | 103.69% |
| Massachusetts Bay Transportation Authority Sales Tax Revenue | — | $4.2M | 102.68% |
| Commonwealth of Massachusetts | — | $4.2M | 102.13% |
| Massachusetts School Building Authority | — | $4.2M | 101.69% |
| Massachusetts School Building Authority | — | $4.1M | 101.26% |
| Commonwealth of Massachusetts Transportation Fund Revenue | — | $4.1M | 101.01% |
| Tri-County Regional Vocational Technical School District/MA | — | $3.9M | 95.35% |
| Massachusetts Development Finance Agency | — | $3.7M | 90.11% |
| Puerto Rico Sales Tax Financing Corp. Sales Tax Revenue | — | $3.6M | 88.51% |
| Massachusetts Development Finance Agency | — | $3.6M | 88.40% |
| Massachusetts Port Authority | — | $3.6M | 88.07% |
| Report date | Net assets |
|---|---|
| 2026-03-31 | $408.8M |
| 2025-12-31 | $401.0M |
| 2025-09-30 | $394.0M |
| 2025-06-30 | $382.8M |
| 2025-03-31 | $389.9M |
| 2024-12-31 | $385.6M |
| 2024-09-30 | $377.9M |
| 2024-06-30 | $360.2M |