Ranked by reported Q2 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. | 26.0M | $6.65B | +6.6% | 8.908% | 0.10% |
| 2 | VANGUARD CAPITAL MANAGEMENT LLC | 19.1M | $4.88B | -0.5% | 6.534% | 0.10% |
| 3 | STATE STREET CORP | 18.5M | $4.72B | -2.9% | 6.327% | 0.07% |
| 4 | VANGUARD PORTFOLIO MANAGEMENT LLC | 15.6M | $4.00B | -0.3% | 5.354% | 0.18% |
| 5 | GEODE CAPITAL MANAGEMENT, LLC | 8.4M | $2.13B | +6.8% | 2.861% | 0.11% |
| 6 | MORGAN STANLEY | 5.9M | $1.51B | -3.1% | 2.017% | 0.08% |
| 7 | RAYMOND JAMES FINANCIAL INC | 5.7M | $1.45B | -1.5% | 1.947% | 0.39% |
| 8 | FMR LLC | 5.4M | $1.39B | +10.4% | 1.857% | 0.06% |
| 9 | Bank of New York Mellon Corp | 4.0M | $1.03B | +1.9% | 1.379% | 0.17% |
| 10 | Boston Partners | 3.5M | $905.8M | -37.8% | 1.204% | 0.80% |
| 11 | WELLINGTON MANAGEMENT GROUP LLP | 3.3M | $831.5M | -42.3% | 1.114% | 0.14% |
| 12 | NORTHERN TRUST CORP | 3.1M | $799.2M | -1.6% | 1.071% | 0.09% |
| 13 | DIMENSIONAL FUND ADVISORS LP | 3.1M | $781.5M | -1.0% | 1.047% | 0.14% |
| 14 | GOLDMAN SACHS GROUP INC | 3.0M | $774.5M | +3.1% | 1.038% | 0.07% |
| 15 | JPMORGAN CHASE & CO | 2.7M | $709.3M | -20.4% | 0.937% | 0.04% |
| 16 | CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 2.6M | $670.5M | -3.9% | 0.898% | 0.09% |
| 17 | NORGES BANK | 2.5M | $630.4M | — | 0.845% | 0.06% |
| 18 | BANK OF AMERICA CORP /DE/ | 2.4M | $621.8M | -6.3% | 0.833% | 0.04% |
| 19 | Invesco Ltd. | 2.3M | $598.5M | -17.2% | 0.802% | 0.05% |
| 20 | Amundi | 2.2M | $572.2M | +17.4% | 0.767% | 0.14% |
| 21 | AMERIPRISE FINANCIAL INC | 2.0M | $519.5M | -8.7% | 0.696% | 0.11% |
| 22 | UBS Group AG | 1.9M | $498.0M | +3.9% | 0.667% | 0.06% |
| 23 | VANGUARD FIDUCIARY TRUST CO | 1.7M | $424.2M | -0.1% | 0.568% | 0.09% |
| 24 | Allianz Asset Management GmbH | 1.6M | $408.8M | -8.2% | 0.548% | 0.17% |
| 25 | Capital Wealth Planning, LLC | 1.6M | $403.4M | -3.9% | 0.540% | 2.02% |
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 Q2 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 |
|---|---|---|---|---|---|---|
| Q2 2026 | 1,942 | +3.6% | 76.41% | 0.75 pp | $54.75B | +0.0% |
| Q1 2026 | 1,874 | +15% | 77.16% | 0.27 pp | $54.74B | +54% |
| Q4 2025 | 1,632 | +1.7% | 77.43% | +0.29 pp | $35.64B | 15% |
| Q3 2025 | 1,605 | +5.7% | 77.14% | 2.97 pp | $41.92B | +12% |
| Q2 2025 | 1,519 | +0.9% | 80.11% | 0.18 pp | $37.40B | +17% |
| Q1 2025 | 1,506 | +1.7% | 80.29% | 0.69 pp | $31.84B | +2.4% |
| Q4 2024 | 1,481 | 1.3% | 80.98% | 0.27 pp | $31.09B | 15% |
| Q3 2024 | 1,501 | — | 81.25% | — | $36.72B | — |
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 Q2 2026 13F filings, institutional ownership of Marathon Petroleum Corporation stands at 76.4%, held across 1,942 reporting institutions.
BlackRock, Inc. is the largest reported institutional holder of MPC, with approximately 26,006,017 shares worth $6.65B as of Q2 2026.
No marquee "smart money" managers (Berkshire, Burry, ARK, Tiger Global, Pershing Square, Baupost, etc.) currently appear among the top 25 institutional holders of MPC.
Our composite Smart Money Score for MPC is 39 out of 100 (Bearish). It combines net institutional buying activity, ownership shift, marquee investor presence, and holder-count growth.
148 institutions opened new positions in MPC during Q2 2026, while 98 fully exited. 1,351 added to existing positions and 383 trimmed.
MPC institutional ownership fell by 0.75 percentage points quarter-over-quarter, with a net change of +68 holders.
The top 10 institutions account for 52.3% of all reported 13F value in MPC, and the top 25 account for 69.2%.
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