Marathon Petroleum
MPC
1,945 hedge funds and large institutions have $56B invested in Marathon Petroleum in 2026 Q2 according to their latest regulatory filings, with 173 funds opening new positions, 685 increasing their positions, 715 reducing their positions, and 94 closing their positions.
84% more first-time investments, than exits
New positions opened: 173 | Existing positions closed: 94
48% more call options, than puts
Call options by funds: $834M | Put options by funds: $564M
3% more funds holding
Funds holding: 1,894 → 1,945 (+51)
4% more capital invested
Capital invested by funds: $53.9B → $56B (+$2.08B)
0.03% less ownership
Funds ownership: 75.04% → 75.01% (-0.03%)
4% less repeat investments, than reductions
Existing positions increased: 685 | Existing positions reduced: 715
35% less funds holding in top 10
Funds holding in top 10: 26 → 17 (-9)
Top Buyers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
BlackRock
New York
|
+$396M |
| 2 |
Victory Capital Management
San Antonio,
Texas
|
+$146M |
| 3 |
American Century Companies
Kansas City,
Missouri
|
+$138M |
| 4 |
T. Rowe Price Associates
Baltimore,
Maryland
|
+$137M |
| 5 |
Geode Capital Management
Boston,
Massachusetts
|
+$130M |
Top Sellers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Harris Associates
Chicago,
Illinois
|
-$633M |
| 2 |
Wellington Management Group
Boston,
Massachusetts
|
-$586M |
| 3 |
Boston Partners
Boston,
Massachusetts
|
-$524M |
| 4 |
JP Morgan Chase
New York
|
-$172M |
| 5 |
Canada Pension Plan Investment Board
Toronto Ontario,
Ontario, Canada
|
-$150M |
MPC Hedge Fund Activity: Q2 2026 in Review
1,945 of the 8,305 institutional investors tracked by Wall St. Rank reported a position in Marathon Petroleum (MPC) for Q2 2026, worth a combined $56B — up 3.9% from $53.9B a quarter earlier.
Buyers outnumbered sellers: 173 funds opened new MPC positions and 94 closed out — a net gain of 79 holders — while 685 added to existing stakes and 715 trimmed.
The largest buyer was BlackRock, adding an estimated $396M. The largest seller was Harris Associates, cutting an estimated $633M.
- 1,945 institutional investors held Marathon Petroleum (MPC) as of Q2 2026, up from 1,894 in Q1 2026.
- Funds reported $56B of Marathon Petroleum stock for Q2 2026, up 3.9% quarter-over-quarter.
- 173 funds opened new Marathon Petroleum positions in Q2 2026 and 94 closed out, a net change of +79 holders.
- The largest Marathon Petroleum buyer in Q2 2026 was BlackRock, an estimated $396M added.
- The largest Marathon Petroleum seller in Q2 2026 was Harris Associates, an estimated $633M sold.
Based on aggregated 13F filings for Q2 2026.