# Massachusetts Water Resources Authority MA WTR RES AUTH-B-REF

Massachusetts Water Resources Authority MA WTR RES AUTH-B-REF is a security (CUSIP 576051PP5) tracked across SEC portfolio filings. 2 registered fund positions totaling $6.1M via N-PORT as of 2026-05-31; 1 money-market funds via N-MFP.

## Summary

- Issuer: Massachusetts Water Resources Authority
- Class: MA WTR RES AUTH-B-REF
- CUSIP: 576051PP5
- Asset category: DBT
- 13F holders: 0
- N-PORT fund positions: 2
- N-PORT value: $6.1M
- N-PORT report: 2026-05-31
- N-MFP funds: 1

## Top fund holders (N-PORT)

| Fund | Registrant | Value | % of fund |
| --- | --- | --- | --- |
| [VANGUARD MASSACHUSETTS TAX-EXEMPT FUND](https://search.stillhousedata.com/fund/S000002870) | VANGUARD MASSACHUSETTS TAX-EXEMPT FUNDS | $3.5M | 9.41% |
| Nuveen Select Tax-Free Income Portfolio 3 | Nuveen Select Tax-Free Income Portfolio 3 | $2.6M | 118.82% |

## More

- [This page as markdown (for LLM agents)](https://search.stillhousedata.com/security/576051PP5.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.