Ranked by reported Q1 2026 13F market value
Share of total reported institutional value in MPC held by the largest 10 / 25 filers.
| # | Institution | Shares Held | Market Value | QoQ Change | Ownership % | % of Fund |
|---|---|---|---|---|---|---|
| 1 | BlackRock, Inc. | 24.4M | $5.96B | +8.8% | 8.356% | 0.10% |
| 2 | VANGUARD CAPITAL MANAGEMENT LLC | 19.2M | $4.68B | — | 6.567% | 0.12% |
| 3 | STATE STREET CORP | 19.0M | $4.65B | +6.1% | 6.517% | 0.16% |
| 4 | VANGUARD PORTFOLIO MANAGEMENT LLC | 15.7M | $3.83B | — | 5.368% | 0.20% |
| 5 | GEODE CAPITAL MANAGEMENT, LLC | 7.8M | $1.90B | +0.7% | 2.679% | 0.12% |
| 6 | Kentucky Farm Bureau Mutual Insurance Co | 30K | $1.81B | — | 0.010% | 0.04% |
| 7 | MORGAN STANLEY | 6.1M | $1.48B | -0.2% | 2.080% | 0.09% |
| 8 | RAYMOND JAMES FINANCIAL INC | 5.8M | $1.41B | -0.7% | 1.978% | 0.43% |
| 9 | Boston Partners | 5.6M | $1.38B | -7.7% | 1.935% | 1.44% |
| 10 | WELLINGTON MANAGEMENT GROUP LLP | 5.6M | $1.38B | -21.7% | 1.931% | 0.26% |
| 11 | FMR LLC | 4.9M | $1.20B | +41.4% | 1.682% | 0.06% |
| 12 | Bank of New York Mellon Corp | 4.0M | $965.3M | -10.4% | 1.354% | 0.18% |
| 13 | NORTHERN TRUST CORP | 3.2M | $775.7M | -3.4% | 1.088% | 0.10% |
| 14 | DIMENSIONAL FUND ADVISORS LP | 3.1M | $754.1M | -7.8% | 1.058% | 0.16% |
| 15 | GOLDMAN SACHS GROUP INC | 2.9M | $717.3M | +12.1% | 1.006% | 0.08% |
| 16 | Invesco Ltd. | 2.8M | $690.7M | +8.8% | 0.969% | 0.11% |
| 17 | HARRIS ASSOCIATES L P | 2.8M | $685.2M | -30.4% | 0.961% | 0.91% |
| 18 | CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 2.7M | $666.5M | -3.2% | 0.935% | 0.10% |
| 19 | BANK OF AMERICA CORP /DE/ | 2.6M | $633.7M | +1.6% | 0.889% | 0.05% |
| 20 | AMERIPRISE FINANCIAL INC | 2.2M | $543.1M | -1.1% | 0.762% | 0.13% |
| 21 | Amundi | 1.9M | $465.3M | +2.6% | 0.653% | 0.13% |
| 22 | UBS Group AG | 1.9M | $457.9M | +20.3% | 0.642% | 0.07% |
| 23 | Allianz Asset Management GmbH | 1.7M | $425.1M | +9.8% | 0.596% | 0.46% |
| 24 | SUSQUEHANNA INTERNATIONAL GROUP, LLP | 1.7M | $407.6M | +21.1% | 0.572% | 0.05% |
| 25 | Legal & General Group Plc | 1.7M | $405.6M | -3.1% | 0.569% | 0.09% |
denotes a marquee investor (Buffett, Burry, ARK, Tiger Global, Pershing Square, Baupost and other widely-followed managers). “% of Fund” shows how much of that investor’s total 13F portfolio is invested in MPC — a direct measure of their conviction.
Filings activity in MPC during Q1 2026, grouped by how each filer changed its position.
8 quarters of 13F filings · Δ columns show change vs prior quarter
| Quarter | Inst. Holders | Δ Holders | Ownership % | Δ Ownership | Total 13F Value | Δ Value |
|---|---|---|---|---|---|---|
| Q1 2026 | 1,845 | +14% | 69.00% | +23.50 pp | $53.09B | +52% |
| Q4 2025 | 1,624 | +2.1% | 45.50% | 7.80 pp | $35.01B | 15% |
| Q3 2025 | 1,590 | +4.7% | 53.30% | +4.69 pp | $41.01B | +9.6% |
| Q2 2025 | 1,519 | +0.9% | 48.61% | +7.24 pp | $37.40B | +17% |
| Q1 2025 | 1,506 | +1.7% | 41.37% | +0.97 pp | $31.84B | +2.4% |
| Q4 2024 | 1,481 | 1.3% | 40.40% | 7.32 pp | $31.09B | 15% |
| Q3 2024 | 1,501 | 3.8% | 47.72% | 10.94 pp | $36.72B | 19% |
| Q2 2024 | 1,561 | — | 58.66% | — | $45.14B | — |
Source: SEC 13F institutional filings. Ownership % requires market cap data and will show once linked. Δ columns compare to the immediately prior filed quarter.
Quick answers to the most common questions about buying MPC stock.
Based on Q1 2026 13F filings, institutional ownership of Marathon Petroleum Corporation stands at 69.0%, held across 1,845 reporting institutions.
BlackRock, Inc. is the largest reported institutional holder of MPC, with approximately 24,394,842 shares worth $5.96B as of Q1 2026.
Yes — 1 widely-followed marquee investor appear among the top 25 institutional holders of MPC, including SUSQUEHANNA INTERNATIONAL GROUP, LLP.
Our composite Smart Money Score for MPC is 73 out of 100 (Bullish). It combines net institutional buying activity, ownership shift, marquee investor presence, and holder-count growth.
371 institutions opened new positions in MPC during Q1 2026, while 150 fully exited. 1,365 added to existing positions and 105 trimmed.
MPC institutional ownership rose by 23.50 percentage points quarter-over-quarter, with a net change of +221 holders.
The top 10 institutions account for 53.6% of all reported 13F value in MPC, and the top 25 account for 72.1%.
All data is sourced from SEC Form 13F filings, which institutional investment managers with at least $100M in assets are required to file each quarter. We process every 13F filing from EDGAR and recompute the aggregates after each cycle. Insider transactions are sourced from Form 4 filings.
Marathon Petroleum Corporation (MPC) Institutional Ownership