# Massachusetts Port Authority Massachusetts Port Authority, Series 2021 E

Massachusetts Port Authority Massachusetts Port Authority, Series 2021 E is a security (CUSIP 575896YK5) tracked across SEC portfolio filings. 8 registered fund positions totaling $67.8M via N-PORT as of 2026-05-31.

## Summary

- Issuer: Massachusetts Port Authority
- Class: Massachusetts Port Authority, Series 2021 E
- CUSIP: 575896YK5
- Asset category: DBT
- 13F holders: 0
- N-PORT fund positions: 8
- N-PORT value: $67.8M
- N-PORT report: 2026-05-31

## Top fund holders (N-PORT)

| Fund | Registrant | Value | % of fund |
| --- | --- | --- | --- |
| [Franklin Federal Tax-Free Income Fund](https://search.stillhousedata.com/fund/S000006760) | Franklin Federal Tax Free Income Fund | $25.1M | 32.43% |
| [Fidelity Massachusetts Municipal Income Fund](https://search.stillhousedata.com/fund/S000007114) | Fidelity Massachusetts Municipal Trust | $16.3M | 100.74% |
| BlackRock MuniYield Quality Fund, Inc. | BlackRock MuniYield Quality Fund, Inc. | $11.3M | 61.11% |
| [AB National Portfolio](https://search.stillhousedata.com/fund/S000010351) | AB MUNICIPAL INCOME FUND, INC. | $5.1M | 25.20% |
| [AB Massachusetts Portfolio](https://search.stillhousedata.com/fund/S000010355) | AB MUNICIPAL INCOME FUND II | $5.1M | 187.33% |
| [AB Municipal Income Shares](https://search.stillhousedata.com/fund/S000029560) | AB CORPORATE SHARES | $2.3M | 1.31% |
| BlackRock Investment Quality Municipal Trust, Inc. | BlackRock Investment Quality Municipal Trust, Inc. | $2.2M | 102.66% |
| Western Asset Intermediate Muni Fund Inc. | Western Asset Intermediate Muni Fund Inc. | $505K | 42.42% |

## More

- [This page as markdown (for LLM agents)](https://search.stillhousedata.com/security/575896YK5.md)
- [Search all SEC filings, advisers and people on Adviser Search](https://search.stillhousedata.com/)

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Source: public SEC filing data via Adviser Search (https://search.stillhousedata.com).
Agents: this data is also queryable via MCP tools and read-only SQL — see https://search.stillhousedata.com/llms.txt.