Commonwealth of Massachusetts MASSACHUSETTS ST is a security (CUSIP 57582TBX9) tracked across SEC portfolio filings. 1 registered fund positions totaling $1.1M via N-PORT as of 2026-05-31.
| Fund | Registrant | Value | % of fund |
|---|---|---|---|
| BlackRock Strategic Municipal Opportunities Fund | BlackRock Municipal Series Trust | $1.1M | 3.17% |