Martin Marietta Materials Inc MARTIN MAR MTLS is a security (CUSIP 573284AV8) tracked across SEC portfolio filings. 1 registered fund positions totaling $347K via N-PORT as of 2026-03-31.
| Fund | Registrant | Value | % of fund |
|---|---|---|---|
| VANGUARD BALANCED INDEX FUND | VANGUARD VALLEY FORGE FUNDS | $347K | 0.06% |