Unless you borrow money to invest, the potential losses are limited. But if you pick the right stock, you can make a lot more than 100%. For example, the Mercury General Corporation (NYSE:MCY) share price has soared 126% return in just a single year. On top of that, the share price is up 21% in about a quarter. However, the longer term returns haven't been so impressive, with the stock up just 16% in the last three years.

With that in mind, it's worth seeing if the company's underlying fundamentals have been the driver of long term performance, or if there are some discrepancies.

There is no denying that markets are sometimes efficient, but prices do not always reflect underlying business performance. One way to examine how market sentiment has changed over time is to look at the interaction between a company's share price and its earnings per share (EPS).

Mercury General went from making a loss to reporting a profit, in the last year.

When a company is just on the edge of profitability it can be well worth considering other metrics in order to more precisely gauge growth (and therefore understand share price movements).

We doubt the modest 1.9% dividend yield is doing much to support the share price. However the year on year revenue growth of 18% would help. Many businesses do go through a phase where they have to forgo some profits to drive business development, and sometimes its for the best.

The image below shows how earnings and revenue have tracked over time (if you click on the image you can see greater detail).

It's probably worth noting that the CEO is paid less than the median at similar sized companies. But while CEO remuneration is always worth checking, the really important question is whether the company can grow earnings going forward. This free report showing analyst forecasts should help you form a view on Mercury General

What About Dividends?

As well as measuring the share price return, investors should also consider the total shareholder return (TSR). The TSR is a return calculation that accounts for the value of cash dividends (assuming that any dividend received was reinvested) and the calculated value of any discounted capital raisings and spin-offs. So for companies that pay a generous dividend, the TSR is often a lot higher than the share price return. We note that for Mercury General the TSR over the last 1 year was 132%, which is better than the share price return mentioned above. The dividends paid by the company have thusly boosted the total shareholder return.

A Different Perspective

We're pleased to report that Mercury General shareholders have received a total shareholder return of 132% over one year. And that does include the dividend. Since the one-year TSR is better than the five-year TSR (the latter coming in at 8% per year), it would seem that the stock's performance has improved in recent times. Given the share price momentum remains strong, it might be worth taking a closer look at the stock, lest you miss an opportunity. I find it very interesting to look at share price over the long term as a proxy for business performance. But to truly gain insight, we need to consider other information, too. For example, we've discovered 1 warning sign for Mercury General that you should be aware of before investing here.

If you would prefer to check out another company -- one with potentially superior financials -- then do not miss this free list of companies that have proven they can grow earnings.

Please note, the market returns quoted in this article reflect the market weighted average returns of stocks that currently trade on American exchanges.

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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.