Marathon Petroleum
MPC
1,896 hedge funds and large institutions have $53.9B invested in Marathon Petroleum in 2026 Q1 according to their latest regulatory filings, with 351 funds opening new positions, 569 increasing their positions, 678 reducing their positions, and 111 closing their positions.
216% more first-time investments, than exits
New positions opened: 351 | Existing positions closed: 111
86% more funds holding in top 10
Funds holding in top 10: 14 → 26 (+12)
48% more capital invested
Capital invested by funds: $36.4B → $53.9B (+$17.5B)
37% more call options, than puts
Call options by funds: $861M | Put options by funds: $631M
13% more funds holding
Funds holding: 1,680 → 1,896 (+216)
0.68% more ownership
Funds ownership: 74.36% → 75.05% (+0.68%)
16% less repeat investments, than reductions
Existing positions increased: 569 | Existing positions reduced: 678
Top Buyers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
BlackRock
New York
|
+$398M |
| 2 |
Fidelity Investments
Boston,
Massachusetts
|
+$291M |
| 3 |
State Street
Boston,
Massachusetts
|
+$220M |
| 4 |
Two Sigma Investments
New York
|
+$129M |
| 5 |
Goldman Sachs
New York
|
+$83.8M |
Top Sellers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Wellington Management Group
Boston,
Massachusetts
|
-$316M |
| 2 |
Qube Research & Technologies (QRT)
London,
United Kingdom
|
-$291M |
| 3 |
Harris Associates
Chicago,
Illinois
|
-$248M |
| 4 |
T. Rowe Price Associates
Baltimore,
Maryland
|
-$157M |
| 5 |
Citadel Advisors
Miami,
Florida
|
-$143M |
MPC Hedge Fund Activity: Q1 2026 in Review
1,896 of the 8,207 institutional investors tracked by Wall St. Rank reported a position in Marathon Petroleum (MPC) for Q1 2026, worth a combined $53.9B — up 48% from $36.4B a quarter earlier.
Buyers outnumbered sellers: 351 funds opened new MPC positions and 111 closed out — a net gain of 240 holders — while 569 added to existing stakes and 678 trimmed.
The largest buyer was BlackRock, adding an estimated $398M. The largest seller was Wellington Management Group, cutting an estimated $316M.
- 1,896 institutional investors held Marathon Petroleum (MPC) as of Q1 2026, up from 1,680 in Q4 2025.
- Funds reported $53.9B of Marathon Petroleum stock for Q1 2026, up 48% quarter-over-quarter.
- 351 funds opened new Marathon Petroleum positions in Q1 2026 and 111 closed out, a net change of +240 holders.
- The largest Marathon Petroleum buyer in Q1 2026 was BlackRock, an estimated $398M added.
- The largest Marathon Petroleum seller in Q1 2026 was Wellington Management Group, an estimated $316M sold.
Based on aggregated 13F filings for Q1 2026.