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Sienna Gestion’s Marathon Petroleum MPC Stock Holding History

Sienna Gestion’s Portfolio MPC Stock Details MPC Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q2 		$863K Buy
+3,292
New +$808K 0.05% 124
2026
Q1 		– Sell
-25,884
Closed -$4.22M – 157
2025
Q4 		$4.22M Hold
25,884
– – 0.25% 114
2025
Q3 		$4.55M Sell
25,884
-29,229
-53% -$5.14M 0.32% 106
2025
Q2 		$8.36M Buy
55,113
+5,479
+11% +$821K 0.58% 57
2025
Q1 		$7.03M Sell
49,634
-5,975
-11% -$884K 0.57% 64
2024
Q4 		$7.76M Buy
55,609
+19,450
+54% +$2.97M 0.52% 66
2024
Q3 		$5.88M Buy
36,159
+5,198
+17% +$879K 0.39% 96
2024
Q2 		$5.37M Buy
30,961
+305
+1% +$56.7K 0.48% 83
2024
Q1 		$6.18M Buy
+30,656
New +$5.24M 0.53% 77

Other funds holding MPC

BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return
Vanguard Portfolio Management
Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return
Morgan Stanley
Morgan Stanley New York $1.89T AUM 35.08% 1-Year Est. Return
Raymond James Financial
Raymond James Financial St Petersburg, Florida $369B AUM 28.27% 1-Year Est. Return
Fidelity Investments
Fidelity Investments Boston, Massachusetts $2.3T AUM 54.33% 1-Year Est. Return
Bank of New York Mellon
Bank of New York Mellon New York $609B AUM 40.19% 1-Year Est. Return
Boston Partners
Boston Partners Boston, Massachusetts $113B AUM 38.87% 1-Year Est. Return

Sienna Gestion's MPC Position: Q2 2026 in Review

Sienna Gestion opened a new position in Marathon Petroleum (MPC) in Q2 2026: 3,292 shares worth $863K. The stake represents 0.05% of the portfolio and ranks #124 among its holdings. This is a return to the name: Sienna Gestion previously reported a position in MPC as recently as Q4 2025.

Sienna Gestion first reported a position in MPC in Q1 2024 and has held it in 9 quarters since. The position peaked at $8.36M in Q2 2025. 1,948 funds tracked by Wall St. Rank hold MPC as of Q2 2026.

  • Sienna Gestion held 3,292 shares of Marathon Petroleum worth $863K as of Q2 2026.
  • Marathon Petroleum was a new Sienna Gestion position in Q2 2026.
  • Marathon Petroleum made up 0.05% of Sienna Gestion's portfolio in Q2 2026, its #124 holding.
  • Sienna Gestion first reported a position in Marathon Petroleum in Q1 2024 and has held it in 9 quarters since.
  • Sienna Gestion's Marathon Petroleum position peaked at $8.36M in Q2 2025.
  • 1,948 funds tracked by Wall St. Rank held Marathon Petroleum as of Q2 2026.

Based on Sienna Gestion's 13F filing for Q2 2026, filed 13 Aug 2026.