Marathon Petroleum Corporation (NYSE:MPC) is favoured by institutional owners who hold 76% of the company

Simply Wall St

Key Insights

  • Significantly high institutional ownership implies Marathon Petroleum's stock price is sensitive to their trading actions
  • The top 20 shareholders own 50% of the company
  • Using data from analyst forecasts alongside ownership research, one can better assess the future performance of a company

Every investor in Marathon Petroleum Corporation (NYSE:MPC) should be aware of the most powerful shareholder groups. With 76% stake, institutions possess the maximum shares in the company. That is, the group stands to benefit the most if the stock rises (or lose the most if there is a downturn).

Since institutional have access to huge amounts of capital, their market moves tend to receive a lot of scrutiny by retail or individual investors. Hence, having a considerable amount of institutional money invested in a company is often regarded as a desirable trait.

In the chart below, we zoom in on the different ownership groups of Marathon Petroleum.

Check out our latest analysis for Marathon Petroleum

NYSE:MPC Ownership Breakdown July 30th 2025

What Does The Institutional Ownership Tell Us About Marathon Petroleum?

Institutional investors commonly compare their own returns to the returns of a commonly followed index. So they generally do consider buying larger companies that are included in the relevant benchmark index.

Marathon Petroleum already has institutions on the share registry. Indeed, they own a respectable stake in the company. This implies the analysts working for those institutions have looked at the stock and they like it. But just like anyone else, they could be wrong. It is not uncommon to see a big share price drop if two large institutional investors try to sell out of a stock at the same time. So it is worth checking the past earnings trajectory of Marathon Petroleum, (below). Of course, keep in mind that there are other factors to consider, too.

NYSE:MPC Earnings and Revenue Growth July 30th 2025

Institutional investors own over 50% of the company, so together than can probably strongly influence board decisions. Marathon Petroleum is not owned by hedge funds. The Vanguard Group, Inc. is currently the largest shareholder, with 11% of shares outstanding. With 7.9% and 6.3% of the shares outstanding respectively, BlackRock, Inc. and State Street Global Advisors, Inc. are the second and third largest shareholders.

A closer look at our ownership figures suggests that the top 20 shareholders have a combined ownership of 50% implying that no single shareholder has a majority.

Researching institutional ownership is a good way to gauge and filter a stock's expected performance. The same can be achieved by studying analyst sentiments. There are plenty of analysts covering the stock, so it might be worth seeing what they are forecasting, too.

Insider Ownership Of Marathon Petroleum

The definition of company insiders can be subjective and does vary between jurisdictions. Our data reflects individual insiders, capturing board members at the very least. Company management run the business, but the CEO will answer to the board, even if he or she is a member of it.

Most consider insider ownership a positive because it can indicate the board is well aligned with other shareholders. However, on some occasions too much power is concentrated within this group.

Our information suggests that Marathon Petroleum Corporation insiders own under 1% of the company. It is a very large company, so it would be surprising to see insiders own a large proportion of the company. Though their holding amounts to less than 1%, we can see that board members collectively own US$101m worth of shares (at current prices). Arguably recent buying and selling is just as important to consider. You can click here to see if insiders have been buying or selling.

General Public Ownership

The general public-- including retail investors -- own 23% stake in the company, and hence can't easily be ignored. While this size of ownership may not be enough to sway a policy decision in their favour, they can still make a collective impact on company policies.

Next Steps:

I find it very interesting to look at who exactly owns a company. But to truly gain insight, we need to consider other information, too. For instance, we've identified 2 warning signs for Marathon Petroleum that you should be aware of.

Ultimately the future is most important. You can access this free report on analyst forecasts for the company.

NB: Figures in this article are calculated using data from the last twelve months, which refer to the 12-month period ending on the last date of the month the financial statement is dated. This may not be consistent with full year annual report figures.

Valuation is complex, but we're here to simplify it.

Discover if Marathon Petroleum might be undervalued or overvalued with our detailed analysis, featuring fair value estimates, potential risks, dividends, insider trades, and its financial condition.

Access Free Analysis

Have feedback on this article? Concerned about the content? Get in touch with us directly. Alternatively, email editorial-team (at) simplywallst.com.

This article by Simply Wall St is general in nature. We provide commentary based on historical data and analyst forecasts only using an unbiased methodology and our articles are not intended to be financial advice. It does not constitute a recommendation to buy or sell any stock, and does not take account of your objectives, or your financial situation. We aim to bring you long-term focused analysis driven by fundamental data. Note that our analysis may not factor in the latest price-sensitive company announcements or qualitative material. Simply Wall St has no position in any stocks mentioned.