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.

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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.

NYSE:MPC Return on Equity August 31st 2025

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.