Question 1

Does Asset Management One own MPC stock?

Accepted Answer

Yes. As of its Q3 2026 13F, Asset Management One holds 124,729 shares of MPC (Marathon Petroleum), worth $49.3M.

Question 2

How many shares of MPC does Asset Management One own?

Accepted Answer

As of its Q3 2026 13F, Asset Management One holds 124,729 shares of MPC (Marathon Petroleum).

Question 3

What is Asset Management One's MPC position worth?

Accepted Answer

As of its Q3 2026 13F, Asset Management One's MPC position is worth $49.3M.

Question 4

Is Asset Management One buying or selling MPC?

Accepted Answer

In Q3 2026, Asset Management One increased its MPC position by 655 shares (+0.5%).

Question 5

When did Asset Management One first buy MPC?

Accepted Answer

Asset Management One already held MPC in its Q1 2019 13F, the earliest on record, and has listed it in 31 quarterly 13F filings.

Quarter	Action	Shares	Change	Value	Weight	Price	Conviction
2026-Q3 Latest	Increased	124,729	+0.5%	$49.3M	0.1%	$395.42	35
2026-Q2	Increased	124,074	+0.7%	$31.7M	0.1%	$254.97	29
2026-Q1	Decreased	123,272	-2.7%	$30.1M	0.1%	$242.59	0
2025-Q4	Increased	126,749	+0.6%	$20.7M	0.1%	$160.76	29
2025-Q3	Decreased	125,981	-1.5%	$24.3M	0.1%	$189.57	0
2025-Q2	Decreased	127,881	-10.4%	$21.2M	0.1%	$162.48	0
2025-Q1	Decreased	142,783	-0.4%	$20.8M	0.1%	$141.70	0
2024-Q4	Decreased	143,377	-5.1%	$19.5M	0.1%	$134.90	0
2024-Q3	Increased	151,125	+3.6%	$24.6M	0.1%	$156.64	30