SCHEDULE: Vanguard Group Discloses 12.65% Stake in Marathon Petroleum

The Vanguard Group has filed an amended Schedule 13G, reporting a 12.65% beneficial ownership stake in Marathon Petroleum Corp as of June 30, 2025.

Summary

• The Vanguard Group beneficially owns 38,865,857 shares of Marathon Petroleum Corp common stock.
• This ownership represents 12.65% of the total class of securities.
• Vanguard holds sole voting power over 0 shares and shared voting power over 384,894 shares.
• Vanguard maintains sole dispositive power over 37,356,490 shares and shared dispositive power over 1,509,367 shares.
• The securities were acquired and are held in the ordinary course of business, not for the purpose of changing or influencing control of Marathon Petroleum Corp.

Sentiment

Score: 5

Explanation: The filing is a routine disclosure of beneficial ownership by a large institutional investor and does not contain information that would inherently indicate positive or negative sentiment regarding the company's performance or outlook.

Positives

• Significant institutional ownership by a major investment manager like Vanguard can signal confidence in the company's long-term prospects.
• Vanguard's holding is for investment purposes in the ordinary course of business, indicating a passive investment strategy rather than an attempt to influence control.

Future Outlook

NA

Industry Context

This filing is a routine disclosure of beneficial ownership by a large institutional investor. Marathon Petroleum operates in the refining, marketing, and transportation of petroleum products, a sector influenced by global energy demand, crude oil prices, and refining margins. Vanguard's investment reflects its broad market indexing or active management strategies within this sector.

Comparison to Industry Standards

• This filing is a standard disclosure of beneficial ownership by a large institutional investor.
• The percentage of ownership (12.65%) is significant, placing Vanguard among the largest shareholders, which is common for major index fund providers across many publicly traded companies.
• No specific comparable companies, projects, or results are mentioned within the filing itself.

Stakeholder Impact

• Shareholders: Increased institutional ownership by a major fund manager like Vanguard can be viewed positively, potentially indicating stability and long-term investment interest.

Key Dates

Keywords

Marathon Petroleum, MPC, Vanguard Group, Institutional Ownership, Schedule 13G, Common Stock, Beneficial Ownership, Investment Adviser, Energy Sector, Oil & Gas