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MPC · Marathon Petroleum Corp · Holdings

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$457.40 +2.37 (+0.52%)
Market Cap
$127.78B
Shares
280.82M
Volume · Oct 12 779.19K Avg daily vol (3M) 2.53M

Institutional ownership from SEC Form 13F filings. Investment managers with more than $100 million in U.S. equities must disclose their positions every quarter, within 45 days of quarter-end, so the holdings shown can lag the market by up to a quarter.

Some SEC filings for this period have not finished importing. Holder totals and changes may be incomplete; these filings remain queued for recovery.
The Sep 30, 2026 filing window is still open — showing the latest known positions. Funds that have not filed yet carry their prior-quarter positions; a fund that filed without this stock counts as sold out. Each fund's Change is measured against its own previous reported quarter, shown in the Reported column. Pick a completed quarter in the Quarter selector below to put every fund on one quarter and see the stock-wide activity breakdown.
Holders: 1,979
Total Value: $57,187,575,678
Total Shares: 223,371,048
Showing 1–100 of 2,034 holdings by value · page 1 of 21

Institutional Ownership Trend

27 quarters

Holder Concentration

Across 1,957 13F filers
Top Holder
11.6%
Sep 2023 → Jun 2026 · range 10.8% – 17.0%
of institutional value
Top 5
39.2%
Sep 2023 → Jun 2026 · range 38.0% – 42.5%
of institutional value
Top 10
50.2%
Sep 2023 → Jun 2026 · range 47.3% – 54.8%
of institutional value
HHI
392
Sep 2023 → Jun 2026 · range 381 – 537
Broadly held
Showing 100 of 2,034
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Holder Value (USD) % of 13F Shares Open

Showing the top 100 of 2,034 holders. Create a free account to see every holder, past quarters, search, filters and CSV export.

Key facts CIK 1510295 CUSIP 56585A102 13F (30d) 126 filings 115 filers Visit website Investor relations