Is Marathon Petroleum Corporation's (NYSE:MPC) ROE Of 16% Impressive?

One of the best investments we can make is in our own knowledge and skill set. With that in mind, this article will work through how we can use Return On Equity (ROE) to better understand a business. By way of learning-by-doing, we’ll look at ROE to gain a better understanding of Marathon Petroleum Corporation (NYSE:MPC).

Return on equity or ROE is an important factor to be considered by a shareholder because it tells them how effectively their capital is being reinvested. Put another way, it reveals the company’s success at turning shareholder investments into profits.

AI is about to change healthcare. These 20 stocks are working on everything from early diagnostics to drug discovery. The best part — they are all under $10bn in marketcap — there is still time to get in early.

The formula for return on equity is:

Return on Equity = Net Profit (from continuing operations) ÷ Shareholders’ Equity

So, based on the above formula, the ROE for Marathon Petroleum is:

16% = US$3.8b ÷ US$23b (Based on the trailing twelve months to June 2025).

The ‘return’ is the yearly profit. So, this means that for every $1 of its shareholder’s investments, the company generates a profit of $0.16.

View our latest analysis for Marathon Petroleum

Arguably the easiest way to assess company’s ROE is to compare it with the average in its industry. Importantly, this is far from a perfect measure, because companies differ significantly within the same industry classification. As is clear from the image below, Marathon Petroleum has a better ROE than the average (11%) in the Oil and Gas industry.

That’s clearly a positive. However, bear in mind that a high ROE doesn’t necessarily indicate efficient profit generation. Especially when a firm uses high levels of debt to finance its debt which may boost its ROE but the high leverage puts the company at risk. You can see the 2 risks we have identified for Marathon Petroleum by visiting our risks dashboard for free on our platform here.

Most companies need money — from somewhere — to grow their profits. The cash for investment can come from prior year profits (retained earnings), issuing new shares, or borrowing. In the first two cases, the ROE will capture this use of capital to grow. In the latter case, the debt required for growth will boost returns, but will not impact the shareholders’ equity. That will make the ROE look better than if no debt was used.

It’s worth noting the high use of debt by Marathon Petroleum, leading to its debt to equity ratio of 1.20. While its ROE is pretty respectable, the amount of debt the company is carrying currently is not ideal. Debt does bring extra risk, so it’s only really worthwhile when a company generates some decent returns from it.

Return on equity is a useful indicator of the ability of a business to generate profits and return them to shareholders. Companies that can achieve high returns on equity without too much debt are generally of good quality. If two companies have around the same level of debt to equity, and one has a higher ROE, I’d generally prefer the one with higher ROE.

But when a business is high quality, the market often bids it up to a price that reflects this. The rate at which profits are likely to grow, relative to the expectations of profit growth reflected in the current price, must be considered, too. So you might want to take a peek at this data-rich interactive graph of forecasts for the company.

But note: Marathon Petroleum may not be the best stock to buy. So take a peek at this free list of interesting companies with high ROE and low debt.

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.