The worst result, after buying shares in a company (assuming no leverage), would be if you lose all the money you put in. But on the bright side, you can make far more than 100% on a really good stock. For instance, the price of InterDigital, Inc. (NASDAQ:IDCC) stock is up an impressive 195% over the last five years. It's also good to see the share price up 27% over the last quarter.

After a strong gain in the past week, it's worth seeing if longer term returns have been driven by improving fundamentals.

To quote Buffett, 'Ships will sail around the world but the Flat Earth Society will flourish. There will continue to be wide discrepancies between price and value in the marketplace...' 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).

Over half a decade, InterDigital managed to grow its earnings per share at 66% a year. The EPS growth is more impressive than the yearly share price gain of 24% over the same period. So one could conclude that the broader market has become more cautious towards the stock.

The image below shows how EPS has tracked over time (if you click on the image you can see greater detail).

We know that InterDigital has improved its bottom line over the last three years, but what does the future have in store? You can see how its balance sheet has strengthened (or weakened) over time in this free interactive graphic.

What About Dividends?

When looking at investment returns, it is important to consider the difference between total shareholder return (TSR) and share price return. The TSR incorporates the value of any spin-offs or discounted capital raisings, along with any dividends, based on the assumption that the dividends are reinvested. Arguably, the TSR gives a more comprehensive picture of the return generated by a stock. In the case of InterDigital, it has a TSR of 227% for the last 5 years. That exceeds its share price return that we previously mentioned. This is largely a result of its dividend payments!

A Different Perspective

It's nice to see that InterDigital shareholders have received a total shareholder return of 97% over the last year. That's including the dividend. Since the one-year TSR is better than the five-year TSR (the latter coming in at 27% per year), it would seem that the stock's performance has improved in recent times. Someone with an optimistic perspective could view the recent improvement in TSR as indicating that the business itself is getting better with time. 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 InterDigital that you should be aware of before investing here.

For those who like to find winning investments this free list of undervalued companies with recent insider purchasing, could be just the ticket.

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.