Massachusetts Municipal Wholesale Electric Co. Massachusetts Municipal Wholesale Electric Co., Series 2023 A is a security (CUSIP 575766BN9) tracked across SEC portfolio filings. 1 registered fund positions totaling $513K via N-PORT as of 2025-08-31.
| Fund | Registrant | Value | % of fund |
|---|---|---|---|
| Putnam Massachusetts Tax Exempt Income Fund | Putnam Massachusetts Tax Exempt Income Fund | $513K | 20.39% |