Massachusetts Mutual Life Insurance Co MASS MUTUAL LIFE is a security (CUSIP 575767AM0) tracked across SEC portfolio filings. 1 registered fund positions totaling $66K via N-PORT as of 2026-03-31.
| Fund | Registrant | Value | % of fund |
|---|---|---|---|
| VANGUARD CORE-PLUS BOND INDEX ETF | VANGUARD QUANTITATIVE FUNDS | $66K | 5.62% |