When did MPC join the S&P 500?

Marathon Oil joined the S&P 500 index on 2011-06-30.

What sector is MPC in?

MPC is in the Energy sector, Oil & Gas Refining & Marketing industry.

MPC — Marathon Oil

Name: MPC Institutional Holdings (13F) — 2026Q1
Creator: SEC EDGAR
License: https://www.sec.gov/data

Oil & Gas Refining & Marketing · Energy

Marathon Petroleum Corporation is an independent company that refines, markets, and transports petroleum products in the United States. It operates through the following segments: Refining and Marketing, and Midstream. The Refining and Marketing segment refines crude oil and other feedstocks at refineries in the U.S. Gulf Coast and Midwest regions, purchases ethanol and refined products for resale, and distributes refined products through various means including company-owned or operated barges, terminals, and trucks. The Midstream segment primarily transports, stores, distributes, and sells crude oil and refined products for the Refining and Marketing segment through refining logistics assets, pipelines, terminals, towboats, and barges. It also gathers, processes, and transports natural gas, and gathers, transports, fractionates, stores, and sells natural gas liquids.

Key Facts

Status	Active
Sector	Energy
Industry	Oil & Gas Refining & Marketing
Joined	2011-06-30
Tenure	15 yrs

S&P 500 Timeline

2011-06-30Joined S&P 500

Industry Peers

PSX VLO

Sector Peers

APA BKR COP CVX DVN EOG EQT EXE FANG HAL

Institutional Holdings (13F)

9 institutions hold MPC, totaling 17.5M shares ($446M) · As of 2026Q1

Rank	Institution	Shares	Value
1	BARCLAYS PLC	13.2M	$347M
2	DZ BANK AG Deutsche Zentral Genossenschafts Bank, Frankfurt am Main	1.9M	$44M
3	DANSKE BANK A/S	1.4M	$40M
4	Leonteq Securities AG	520K	$7M
5	Marex Group plc	161K	$4M
6	Ramiah Investment Group	169K	$2M
7	Henshaw Capital LLC	52K	$781855
8	Kentucky Retirement Systems	58K	$2030
9	HUNTINGTON NATIONAL BANK	1	$29

View all holders →

Data source: Wikipedia · CC BY-SA 4.0 · SEC EDGAR 13F · Updated 2026-07-10