Company · Ownership research

Marathon Petroleum Corp MPC

CIK 0001510295 · CUSIP 56585A102

Insider trading Initial holdings Institutional holders

Quarter-end disclosures, not live holdings.

Several CUSIPs are reported for this company; this page shows CUSIP 56585A102 (MPC), not CUSIP 56585A902 (MPC), CUSIP 56585A952 (MPC), and does not merge CUSIPs.

This page lists the top 20 of 1,561 rows by value; the complete set is available through the API.

Some filings reported values in thousands; those figures were scaled ×1,000 to dollars.

Top 20 institutions

Weight means this stock's share of the manager's own portfolio.

By reported value

#	Manager	Value	Manager weight	Change vs prior	Source
01	VANGUARD GROUP INC CIK 102909 · View history	$5.09B 34,941,391 shares	0.09%	+3.83M(+12.30%)Added	SEC filing ↗ May 9, 2025	▾
02	BlackRock, Inc. CIK 2012383 · View history	$3.54B 24,320,964 shares	0.07%	-431.45K(-1.70%)Reduced	SEC filing ↗ May 2, 2025	▾
03	STATE STREET CORP CIK 93751 · View history	$2.84B 19,466,723 shares	0.12%	-1.23M(-5.90%)Reduced	SEC filing ↗ May 15, 2025	▾
04	WELLINGTON MANAGEMENT GROUP LLP CIK 902219 · View history	$1.72B 11,824,177 shares	0.33%	+1.86M(+18.70%)Added	SEC filing ↗ May 13, 2025	▾
05	GEODE CAPITAL MANAGEMENT, LLC CIK 1214717 · View history	$1.01B 6,979,568 shares	0.08%	+65.14K(+0.90%)Added	SEC filing ↗ May 13, 2025	▾
06	MORGAN STANLEY CIK 895421 · View history	$954.57M 6,552,068 shares	0.07%	-300.99K(-4.40%)Reduced	SEC filing ↗ May 15, 2025	▾
07	RAYMOND JAMES FINANCIAL INC CIK 720005 · View history	$879.61M 6,037,532 shares	0.33%	+353.51K(+6.20%)Added	SEC filing ↗ May 13, 2025	▾
08	Boston Partners CIK 1386060 · View history	$791.27M 5,448,514 shares	0.96%	+2.01M(+58.50%)Added	SEC filing ↗ May 13, 2025	▾
09	Bank of New York Mellon Corp CIK 1390777 · View history	$725.88M 4,982,348 shares	0.14%	+178.40K(+3.70%)Added	SEC filing ↗ Apr 29, 2025	▾
10	DIMENSIONAL FUND ADVISORS LP CIK 354204 · View history	$609.61M 4,185,030 shares	0.15%	-214.95K(-4.90%)Reduced	SEC filing ↗ May 13, 2025	▾
11	NORTHERN TRUST CORP CIK 73124 · View history	$551.23M 3,783,566 shares	0.08%	-153.78K(-3.90%)Reduced	SEC filing ↗ May 13, 2025	▾
12	PRICE T ROWE ASSOCIATES INC /MD/ CIK 80255 · View history	$535.47M 3,675,362 shares	0.07%	+769.01K(+26.50%)Added	SEC filing ↗ May 14, 2025	▾
13	Pacer Advisors, Inc. CIK 1616667 · View history	$510.26M 3,502,372 shares	1.21%	-50.28K(-1.40%)Reduced	SEC filing ↗ May 6, 2025	▾
14	Invesco Ltd. CIK 914208 · View history	$487.40M 3,345,471 shares	0.09%	-55.35K(-1.60%)Reduced	SEC filing ↗ May 12, 2025	▾
15	AMERIPRISE FINANCIAL INC CIK 820027 · View history	$466.25M 3,199,797 shares	0.13%	-1.46M(-31.40%)Reduced	SEC filing ↗ May 14, 2025	▾
16	NORGES BANK CIK 1374170 · Amended · View history	$463.53M 3,181,643 shares	0.07%	-68.73K(-2.10%)Reduced	SEC filing ↗ May 13, 2025	▾
17	FMR LLC CIK 315066 · View history	$404.62M 2,777,291 shares	0.03%	-541.63K(-16.30%)Reduced	SEC filing ↗ May 12, 2025	▾
18	GOLDMAN SACHS GROUP INC CIK 886982 · Amended · View history	$398.59M 2,735,884 shares	0.08%	-209.47K(-7.10%)Reduced	SEC filing ↗ May 16, 2025	▾
19	CHARLES SCHWAB INVESTMENT MANAGEMENT INC CIK 884546 · Amended · View history	$377.49M 2,591,077 shares	0.07%	+105.15K(+4.20%)Added	SEC filing ↗ Sep 15, 2025	▾
20	JPMORGAN CHASE & CO CIK 19617 · View history	$377.34M 2,590,012 shares	0.03%	+1.29M(+98.90%)Added	SEC filing ↗ May 12, 2025	▾

Showing 20 / 1,561 institutions. The complete set is available through the API.

Coverage & totals by quarter

Reporting institutions

1,561

Cancelled or null records excluded

Disclosed shares

236,313,036

Not deduplicated across managers

Disclosed value

$33.71B

Not market cap or free float

Reporting institutions by quarter

Counts also change with data coverage and reporting entities; they do not measure net buying. Distinct managers with a live stock row in this CUSIP; totals may include overlapping filings and are not a share of the company.

Marathon Petroleum Corp · Q1 2025

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Sources, coverage & how to read this data

Figures are as reported to the SEC and merged with later amendments where Akkru could match them. Preview limits apply to what is listed, not to the totals, which come from the complete reported data. Nothing is zero-filled: a missing quarter or month is shown as missing.