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Of the 17 tracked institutions holding MPC, 10 have a 3-year clone track record — 7 of them beat the S&P. Average holder's clone alpha: +3.0pt. It's a gauge of who owns the name, not just how many.
Among the 17 tracked institutional investors we monitor, MPC (MARATHON PETE CORP) is held with a combined value of $21.19B across 97,294,066 shares. The largest holder is BlackRock, Inc. with a position worth $6.65B (0.10% of their portfolio). Point72 Asset Management, L.P. opened a new position in the most recent quarter. 9 funds increased their holdings. 7 funds reduced their position.
Total Institutional Value
$21.19B
Total Shares Held
97,294,066
Institutional Holders
17
% of Shares Outstanding
34.6%
of 280.82M shares · SEC 2026-07-30
Days to Cover
2.5-3.9%
6.52M shares short · FINRA 2026-08-14
Tracked 13F institutions hold 34.6% of MPC's shares outstanding. This is a floor: 13F filings arrive on a ~45-day lag and we track only a subset of institutional filers, so true institutional ownership is higher. Shares-outstanding is the latest SEC cover-page figure (as of 2026-07-30), not a live float.
Ranked by estimated dollars moved (share change × implied price). 13F data lags up to 45 days.
0
$0
8
$8.41M
Total Transactions
8
Last 12 months
| Date | Insider | Code | Type | Shares | Value |
|---|---|---|---|---|---|
| Aug 31, 2026 | Shawn M Lyon | S | Sale | 1,000 | $375.75K |
| Aug 28, 2026 | Shawn M Lyon | S | Sale | 425 | $156.62K |
| Aug 27, 2026 | Erin M Brzezinski | S | Sale | 570 | $206.79K |
| Aug 17, 2026 | Molly R Benson | S | Sale | 7,196 | $2.58M |
| Aug 17, 2026 | Molly R Benson | S | Sale | 5,000 | $1.79M |
| Aug 13, 2026 | Shawn M Lyon | S | Sale | 2,500 | $875.00K |
| Aug 12, 2026 | Michael A Henschen II | S | Sale | 6,011 | $2.05M |
| Jun 4, 2026 | Michael A Henschen II | S | Sale | 1,372 | $368.73K |
| # | Fund | Value↓ | Portfolio % | Change |
|---|---|---|---|---|
| 1 | BlackRock, Inc. | $6.65B | 0.10% | +6.6% |
| 2 | VANGUARD GROUP INC | $6.23B | 0.09% | -0.1% |
| 3 | STATE STREET CORP | $4.72B | 0.14% | -2.9% |
| 4 | FMR LLC | $1.39B | 0.06% | +10.4% |
| 5 | WELLINGTON MANAGEMENT GROUP LLP | $831.48M | 0.14% | -42.3% |
| 6 | PRICE T ROWE ASSOCIATES INC /MD/ | $470.41M | 0.05% | +43.4% |
| 7 | TWO SIGMA ADVISERS, LP | $221.37M | 0.43% | +4.5% |
| 8 | AQR CAPITAL MANAGEMENT LLC | $211.78M | 0.07% | +91.5% |
| 9 | MILLENNIUM MANAGEMENT LLC | $116.30M | 0.08% | -14.1% |
| 10 | CITADEL ADVISORS LLC | $105.40M | 0.06% | +104.0% |
| Member | Type | Date |
|---|---|---|
| David J. Taylor | Sell | Jul 24, 2026 |
| Dan Newhouse | Sell | Jul 10, 2026 |
| David J. Taylor | Sell | Mar 11, 2026 |
| David J. Taylor | Sell |
As of the latest SEC 13F filings, BlackRock, Inc. is the largest institutional holder of MPC with a position worth $6.65B, representing 0.10% of their portfolio. In total, 17 institutional investors hold MPC with a combined value of $21.19B.
In the most recent quarter, 1 fund opened a new position in MPC. Additionally, 9 increased their holdings and 7 reduced their positions.
Institutional investors hold $21.19B worth of MPC stock across 17 positions. The largest institutional holder is BlackRock, Inc. with $6.65B in holdings.
A 13F filing is a quarterly report required by the SEC from institutional investment managers with over $100 million in assets. It discloses their holdings in U.S. equities. For MPC, these filings reveal which major funds are accumulating or reducing positions, providing insights into institutional sentiment.
Get notified when hedge funds change their MPC positions.
Alpha = the manager's 3-year clone return minus the S&P 500. A skilled roster is a stronger tell than a crowded one — though even skilled managers' edge doesn't reliably survive the 13F disclosure lag. Why →
| Feb 26, 2026 |
| David J. Taylor | Buy | Aug 14, 2025 |
| David J. Taylor | Sell | Jul 18, 2025 |
| Rob Bresnahan | Buy | May 15, 2025 |
| Jefferson Shreve | Sell | May 12, 2025 |
Showing 8 of 19. STOCK Act disclosures lag up to 45 days.
Last Close
$399.44
2026-09-09
YTD
+141.9%
100% of 52-week range
