VANGUARD PORTFOLIO MANAGEMENT LLC's ownership history for MPC

VANGUARD PORTFOLIO MANAGEMENT LLC currently holds 15.7M shares with a market value of $3.8B. It started holding MPC on 2026-03-31. At its peak, it held 15.7M shares on 2026-03-31. Its highest holding value was $3.8B on 2026-03-31. At its lowest, it held 15.7M shares on 2026-03-31, with a value of $3.8B on 2026-03-31.