MPC
Marathon Petroleum Corporation · Energy · Oil & Gas Refining & Marketing
All ownership figures: tracked 13F managers only, common-stock positions, reporting period Q3 2026
| Quarter | Holders | Δ | Shares | Reported value | New | Exits |
|---|---|---|---|---|---|---|
| Q3 2026 | 4 | +1 | 357.23K | $146.63M | +1 | n/a |
| Q2 2026 | 160 | +5 | 171.40M | $43.83B | +7 | −1 |
| Q1 2026 | 157 | -1 | 173.92M | $42.44B | +4 | −6 |
| Q4 2025 | 157 | +3 | 196.31M | $31.93B | +4 | n/a |
| Q3 2025 | 22 | +1 | 125.00M | $24.09B | +2 | −2 |
| Q2 2025 | 19 | +1 | 115.64M | $19.20B | +2 | −1 |
| Q1 2025 | 15 | 0 | 50.29M | $7.32B | +1 | −1 |
| Q4 2024 | 15 | 0 | 46.72M | $6.51B | +1 | −1 |
| Q3 2024 | 14 | -1 | 22.70M | $3.69B | +1 | −2 |
| Q2 2024 | 15 | n/a | 25.65M | $4.45B | n/a | n/a |
| # | Manager | Shares | Δ shares | Value | Their weight | Held | ||
|---|---|---|---|---|---|---|---|---|
| 1 | Assenagon Asset Management S.A. | 206.88K | +53.0% | $81.80M | 0.1% | ▲ Add | 4 | SEC ↗ |
| 2 | Wealth Enhancement Advisory… | 103.06K | +13.4% | $44.97M | 0.1% | ▲ Add | 4 | SEC ↗ |
| 3 | TD Waterhouse Canada Inc. | 46.04K | +200.3% | $19.36M | 0.1% | ▲ Add | 4 | SEC ↗ |
| 4 | Ninety One UK Ltd | 1.25K | New | $494,276 | 0.0% | New | 1 | SEC ↗ |
“Their weight” = the position's share of that manager's reported 13F equity value: the conviction measure. ✦ = curated manager.
New buyers
| Ninety One UK Ltd | $494,276 | 0.0% |
Exited
| No tracked exits this quarter. |
Full-market context: across ALL 13F filers (SEC structured data, Q1 2026): 1,874 holders, 216.66M shares, $50.91B reported. This is a different, older period than the tracked-universe figures above and the two are never mixed.
What else this security's tracked holders most often hold: shared-ownership counts, not fundamental relationships.
Open-market purchases (P)
No open-market insider purchases in our coverage window.
Open-market sales (S)
Officer · 1.00K sh · $375,750
Officer · 425 sh · $156,617
Officer · 570 sh · $206,790
Officer · 5.00K sh · $1.79M
Officer · 7.20K sh · $2.58M
Officer · 2.50K sh · $875,000
Officer · 6.01K sh · $2.05M
Awards, exercises and tax withholding are never counted as buys or sales here. Methodology