Merck & Co Inc MERCK & CO INC is a security (CUSIP 589331AS6) tracked across SEC portfolio filings. 1 registered fund positions totaling $761K via N-PORT as of 2026-03-31.
| Fund | Registrant | Value | % of fund |
|---|---|---|---|
| VANGUARD LONG-TERM BOND INDEX FUND | VANGUARD BOND INDEX FUNDS | $761K | 0.88% |