Alta Advisers’s Marathon Petroleum MPC Stock Holding History

Alta Advisers’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 Q1	$283K	Buy	+1,157	New	+$234K	0.1%	145
2025 Q4	–	Sell	-1,557	Closed	-$300K	–	228
2025 Q3	$300K	Hold	1,557	–	–	0.09%	175
2025 Q2	$259K	Hold	1,557	–	–	0.09%	187
2025 Q1	$227K	Buy	+1,557	New	+$230K	0.1%	206
2024 Q4	–	Sell	-1,300	Closed	-$212K	–	314
2024 Q3	$212K	Hold	1,300	–	–	0.1%	133
2024 Q2	$226K	Hold	1,300	–	–	0.11%	113
2024 Q1	$262K	Sell	1,300 -300	-19%	-$51.3K	0.13%	100
2023 Q4	$237K	Hold	1,600	–	–	0.13%	104
2023 Q3	$242K	Hold	1,600	–	–	0.14%	89
2023 Q2	$187K	Hold	1,600	–	–	0.1%	113
2023 Q1	$216K	Hold	1,600	–	–	0.13%	95
2022 Q4	$186K	Hold	1,600	–	–	0.11%	105
2022 Q3	$159K	Buy	+1,600	New	+$150K	0.1%	111

Other funds holding MPC

BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return

VCM

Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM

State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return

VPM

Vanguard Portfolio Management Malvern, Pennsylvania $1.91T AUM

Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return

Morgan Stanley New York $1.66T AUM 25.57% 1-Year Est. Return

Raymond James Financial St Petersburg, Florida $324B AUM 22.36% 1-Year Est. Return

Boston Partners Boston, Massachusetts $95.5B AUM 28.4% 1-Year Est. Return

Wellington Management Group Boston, Massachusetts $535B AUM 26.23% 1-Year Est. Return

Fidelity Investments Boston, Massachusetts $1.9T AUM 41.92% 1-Year Est. Return

Alta Advisers's MPC Position: Q1 2026 in Review

Alta Advisers opened a new position in Marathon Petroleum (MPC) in Q1 2026: 1,157 shares worth $283K. The stake represents 0.1% of the portfolio and ranks #145 among its holdings. This is a return to the name: Alta Advisers previously reported a position in MPC as recently as Q3 2025.

Alta Advisers first reported a position in MPC in Q3 2022 and has held it in 13 quarters since. The position peaked at $300K in Q3 2025. 1,882 funds tracked by Wall St. Rank hold MPC as of Q1 2026.

Alta Advisers held 1,157 shares of Marathon Petroleum worth $283K as of Q1 2026.
Marathon Petroleum was a new Alta Advisers position in Q1 2026.
Marathon Petroleum made up 0.1% of Alta Advisers's portfolio in Q1 2026, its #145 holding.
Alta Advisers first reported a position in Marathon Petroleum in Q3 2022 and has held it in 13 quarters since.
Alta Advisers's Marathon Petroleum position peaked at $300K in Q3 2025.
1,882 funds tracked by Wall St. Rank held Marathon Petroleum as of Q1 2026.

Based on Alta Advisers's 13F filing for Q1 2026, filed 7 May 2026.