Massachusetts Municipal Wholesale Electric Co. Massachusetts Municipal Wholesale Electric Co., Series 2023 A is a security (CUSIP 575766BL3) tracked across SEC portfolio filings. 1 registered fund positions totaling $479K 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 | $479K | 19.05% |