Marathon Petroleum CORP (MPC) — Institutional Investor Activity (Q2 2026)

MPC ranks #146 out of 37501 tracked stocks by institutional interest — one of the most closely watched names in our coverage.

1980 institutions disclose a position in MPC, but none treat it as a major bet — even Capital Wealth Planning, LLC, its most concentrated holder, allocates just 2.0% of its own portfolio to it.

BlackRock has added to its MPC position for two straight quarters, increasing it by $3.0B to reach $6.6B today.

Assenagon Asset Management S.A. has trimmed its MPC position for two straight quarters, cutting it by $34.8M while still holding $17.3M.

MPC is up 1.5% today, and institutions have been net buyers of $21.1B this quarter — today's price move and the underlying institutional flow are pointing the same direction.

MPC posted net income of $8.6B over the trailing twelve months, and currently trades at a P/E of 13.2.

• Profitable — net income of $8.6B over the trailing twelve months
• Revenue grew 15.0% year over year
• Net income improved year over year, from $2.1B to $8.6B
• Generated $8.3B in positive operating cash flow
• Current ratio of 1.26x — below the conventional 1.5x liquidity buffer
• Liabilities run 3.46x equity — a highly leveraged balance sheet worth noting