How many institutional investors hold MPC?

4 tracked institutional investors disclosed a position in MPC (MARATHON PETE CORP) in their most recent 13F filing.

Who is the largest institutional holder of MPC?

Ken Griffin, Citadel Advisors, holds the largest disclosed position in MPC, valued at $238M.

What sector is MPC in?

MARATHON PETE CORP is classified in the Energy GICS sector, Oil & Gas Refining industry.

Where does this MPC ownership data come from?

SEC Form 13F-HR filings, accessed via EDGAR. 13F filings are disclosed quarterly with a 45-day reporting delay and cover U.S.-listed long equity positions only. This is not investment advice.

MPC — MARATHON PETE CORP

Name: MARATHON PETE CORP (MPC) — Institutional Ownership
Creator: InvestorLens
License: https://www.sec.gov/about/website-policies

Energy · Oil & Gas Refining

For educational research only.InvestorLens analyzes public regulatory filings (SEC EDGAR, STOCK Act PTRs) that may be delayed by 45 days or more. Information shown is historical and is not financial, legal, or tax advice, nor a recommendation or solicitation to buy or sell any security. Always do your own research.

InvestorLens aggregates public filing data to show which tracked investors reported holdings in this stock. Dollar values represent reported position values, not market capitalization, and may be delayed up to 45 days. Not a recommendation.

Sourced from SEC EDGAR public filings

About MARATHON PETE CORP (MPC)

MARATHON PETE CORP (MPC) appears in the most recent 13F filings of 4 tracked institutional investors. MARATHON PETE CORP is classified in the Energy sector (Oil & Gas Refining industry). The largest disclosed position is held by Ken Griffin (Citadel Advisors), valued at $238M. Across recent filings, tracked investors recorded 1 new positions, 1 increased, 1 reduced, and 0 exited. All data sourced from SEC 13F filings.

Tracked investors reporting MPC

Investor	Firm	Shares	Market value	% of portfolio	As of
Ken Griffin	Citadel Advisors	974.6K	$238M	0.04%	Mar 31, 2026
Izzy Englander	Millennium Management	529.3K	$129.3M	0.05%	Mar 31, 2026
Ray Dalio	Bridgewater Associates	77.3K	$18.9M	0.08%	Mar 31, 2026
Steve Cohen	Point72 Asset Management	47.8K	$11.7M	0.01%	Mar 31, 2026

Ken GriffinMar 31, 2026
Citadel Advisors
Shares
974.6K
Value
$238M
% Portfolio
0.04%
Izzy EnglanderMar 31, 2026
Millennium Management
Shares
529.3K
Value
$129.3M
% Portfolio
0.05%
Ray DalioMar 31, 2026
Bridgewater Associates
Shares
77.3K
Value
$18.9M
% Portfolio
0.08%
Steve CohenMar 31, 2026
Point72 Asset Management
Shares
47.8K
Value
$11.7M
% Portfolio
0.01%

Recent activity

Investor	Action	Δ %	Current value	Filing date
Ray Dalio	Reduced	-60.48%	$18.9M	May 15, 2026
Ray Dalio	Increased	6.49%	$31.8K	Feb 13, 2026
Ray Dalio	New	—	$35.4K	Nov 13, 2025

Ray Dalio
Reduced
$18.9M(-60.48%)May 15, 2026
Ray Dalio
Increased
$31.8K(6.49%)Feb 13, 2026
Ray Dalio
New
$35.4KNov 13, 2025

Frequently asked questions

How many institutional investors hold MPC?: 4 tracked institutional investors disclosed a position in MPC (MARATHON PETE CORP) in their most recent 13F filing.
Who is the largest institutional holder of MPC?: Ken Griffin, Citadel Advisors, holds the largest disclosed position in MPC, valued at $238M.
Did institutional ownership of MPC increase or decrease?: Across recent 13F filings, tracked investors recorded 1 new positions, 1 increased, 1 reduced, and 0 fully exited MPC.
What sector is MPC in?: MARATHON PETE CORP is classified in the Energy GICS sector, Oil & Gas Refining industry.
Where does this MPC ownership data come from?: SEC Form 13F-HR filings, accessed via EDGAR. 13F filings are disclosed quarterly with a 45-day reporting delay and cover U.S.-listed long equity positions only. This is not investment advice.