Atom Investors’s Marathon Petroleum MPC Stock Holding History

Atom Investors’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	$912K	Buy	+3,566	New	+$875K	0.08%	385
2026 Q1	–	Sell	-1,745	Closed	-$284K	–	773
2025 Q4	$284K	Buy	1,745 +609	+54%	+$114K	0.02%	448
2025 Q3	$219K	Sell	1,136 -1,340	-54%	-$236K	0.02%	497
2025 Q2	$411K	Buy	+2,476	New	+$371K	0.04%	385
2020 Q1	–	Sell	-37,157	Closed	-$2.24M	–	358
2019 Q4	$2.24M	Buy	+37,157	New	+$2.32M	0.18%	124

Other funds holding MPC

BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return

Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM

State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return

Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM

Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return

Morgan Stanley New York $1.89T AUM 35.08% 1-Year Est. Return

Raymond James Financial St Petersburg, Florida $369B AUM 28.27% 1-Year Est. Return

Fidelity Investments Boston, Massachusetts $2.3T AUM 54.33% 1-Year Est. Return

Bank of New York Mellon New York $609B AUM 40.19% 1-Year Est. Return

Boston Partners Boston, Massachusetts $113B AUM 38.87% 1-Year Est. Return

Atom Investors's MPC Position: Q2 2026 in Review

Atom Investors opened a new position in Marathon Petroleum (MPC) in Q2 2026: 3,566 shares worth $912K. The stake represents 0.08% of the portfolio and ranks #385 among its holdings. This is a return to the name: Atom Investors previously reported a position in MPC as recently as Q4 2025.

Atom Investors first reported a position in MPC in Q4 2019 and has held it in 5 quarters since. The position peaked at $2.24M in Q4 2019. 1,952 funds tracked by Wall St. Rank hold MPC as of Q2 2026.

Atom Investors held 3,566 shares of Marathon Petroleum worth $912K as of Q2 2026.
Marathon Petroleum was a new Atom Investors position in Q2 2026.
Marathon Petroleum made up 0.08% of Atom Investors's portfolio in Q2 2026, its #385 holding.
Atom Investors first reported a position in Marathon Petroleum in Q4 2019 and has held it in 5 quarters since.
Atom Investors's Marathon Petroleum position peaked at $2.24M in Q4 2019.
1,952 funds tracked by Wall St. Rank held Marathon Petroleum as of Q2 2026.

Based on Atom Investors's 13F filing for Q2 2026, filed 14 Aug 2026.