The worst result, after buying shares in a company (assuming no leverage), would be if you lose all the money you put in. But if you buy shares in a really great company, you can more than double your money. For instance the Tandem Diabetes Care, Inc. (NASDAQ:TNDM) share price is 164% higher than it was three years ago. Most would be happy with that. It's also up 11% in about a month.

See our latest analysis for Tandem Diabetes Care

Because Tandem Diabetes Care made a loss in the last twelve months, we think the market is probably more focussed on revenue and revenue growth, at least for now. Generally speaking, companies without profits are expected to grow revenue every year, and at a good clip. That's because fast revenue growth can be easily extrapolated to forecast profits, often of considerable size.

Over the last three years Tandem Diabetes Care has grown its revenue at 51% annually. That's well above most pre-profit companies. Meanwhile, the share price performance has been pretty solid at 38% compound over three years. This suggests the market has recognized the progress the business has made, at least to a significant degree. That's not to say we think the share price is too high. In fact, it might be worth keeping an eye on this one.

You can see how earnings and revenue have changed over time in the image below (click on the chart to see the exact values).

We're pleased to report that the CEO is remunerated more modestly than most CEOs at similarly capitalized 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 Tandem Diabetes Care

A Different Perspective

We're pleased to report that Tandem Diabetes Care shareholders have received a total shareholder return of 53% over one year. That certainly beats the loss of about 12% per year over the last half decade. The long term loss makes us cautious, but the short term TSR gain certainly hints at a brighter future. While it is well worth considering the different impacts that market conditions can have on the share price, there are other factors that are even more important. To that end, you should be aware of the 1 warning sign we've spotted with Tandem Diabetes Care .

But note: Tandem Diabetes Care may not be the best stock to buy. So take a peek at this free list of interesting companies with past earnings growth (and further growth forecast).

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

If you spot an error that warrants correction, please contact the editor at editorial-team@simplywallst.com. This article by Simply Wall St is general in nature. It does not constitute a recommendation to buy or sell any stock, and does not take account of your objectives, or your financial situation. Simply Wall St has no position in the stocks mentioned.

We aim to bring you long-term focused research analysis driven by fundamental data. Note that our analysis may not factor in the latest price-sensitive company announcements or qualitative material. Thank you for reading.