Massachusetts Bay Transportation Authority, Sales Tax Revenue Bonds, Subordinated Series 2021A-1 is a security (CUSIP 575579L70) tracked across SEC portfolio filings. 3 registered fund positions totaling $6.8M via N-PORT as of 2026-05-31.
| Fund | Registrant | Value | % of fund |
|---|---|---|---|
| Nuveen Quality Municipal Income Fund | Nuveen Quality Municipal Income Fund | $4.6M | 16.39% |
| VANGUARD MASSACHUSETTS TAX-EXEMPT FUND | VANGUARD MASSACHUSETTS TAX-EXEMPT FUNDS | $1.5M | 4.11% |
| VanEck Long Muni ETF | VanEck ETF Trust | $733K | 10.45% |