Latest Period
Q1 2026
Security Snapshot
Marathon Petroleum Corp - Common Stock Institutional Ownership
CUSIP: 56585A102
13F Institutional Holders and Ownership History from Q4 2023 to Q1 2026
Institutions Reporting
91
Shares (Excl. Options)
4,112,900
Price
$244.18
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- Security type / class
- Equity / Common Stock
- All holders as of 31 Mar 2026
- Q1 2026
- Total 13F shares
- 4,112,900
- Total 13F value
- $897,386,059
- Share change
- 0
- Number of holders
- 91
- Shares outstanding
- 311,696,200
- SEC-reported price per share
- $244.18
Latest holder snapshot
2 signals
Issuer context
Names, identifiers, and filing context for this profile.
2 identity fields
13F Shares, Excluding Options vs Price
13F Value, Excluding Options
Total Investors
Key facts
- 56585A102 - Marathon Petroleum Corp - Common Stock is tracked under CUSIP 56585A102.
- 91 institutions reported positions in Q1 2026.
- 1 significant owner is listed from Schedule 13D/13G reporting.
Change
- Holder count moved from 5 to 91 between Q4 2025 and Q1 2026.
- SEC-reported value moved from $9,353,168,102 to $897,386,059.
Research use
- You can quickly see who holds this security, then open quarter and manager detail pages for full evidence.
- 13F and Schedule 13D/13G sections are kept together so you can cross-check institutional and beneficial ownership context.
Evidence
Source: SEC Form 13F
Open SEC evidence
Latest holder context comes from 91 institutions filings for Q1 2026.
Security key
56585A102
Latest holder period
Q1 2026
13F holders
91
13D/G owners
1
CIK / CUSIP context first
Broader feeds
Recent Quarterly Holder Reports
Open recent reporting periods for CUSIP 56585A102:
13D/G owners
Significant owners
Large-stake holder rows connected to Schedule 13D/G evidence.
Rows
1
Security
56585A102
| Filer | Ownership | Change % | Holdings Value | Net Change | Nb Shares | Change % | Reporting Name | Report Period |
|---|---|---|---|---|---|---|---|---|
| VANGUARD GROUP INC | 11% | 34,941,144 | The Vanguard Group | 31 Mar 2025 |
As of 31 Mar 2026, 91 institutional investors reported holding 4,112,900 shares of Marathon Petroleum Corp - Common Stock. This represents 1.3% of the company’s total 311,696,200 outstanding shares.
Quarter history
Institutional holders across reporting periods
Holder count, reported shares/value, and median price by quarter.
Periods
6
Latest
Q1 2026
Rows shown
1-6 of 6
| Period | 13F Shares, Excl. Options | Value, Excl. Options | Value Change | Price (Median) | Investors |
|---|---|---|---|---|---|
| 2026 Q1 | 4,112,900 | $897,386,059 | $244.18 | 91 | |
| 2025 Q4 | 57,511,948 | $9,353,168,102 | +$37,692,917 | $162.63 | 5 |
| 2024 Q3 | 22,443,724 | $3,656,307,077 | -$212,526,684 | $162.91 | 1 |
| 2024 Q2 | 51,925,376 | $9,008,014,191 | -$364,245,197 | $173.48 | 2 |
| 2024 Q1 | 54,025,014 | $10,886,040,267 | -$402,562,743 | $201.50 | 2 |
| 2023 Q4 | 56,022,844 | $8,311,549,160 | $148.36 | 2 |