SI-BONE, Inc. (NASDAQ:SIBN) shareholders should be happy to see the share price up 14% in the last quarter. But that doesn't change the fact that the returns over the last three years have been less than pleasing. Truth be told the share price declined 33% in three years and that return, Dear Reader, falls short of what you could have got from passive investing with an index fund.

If the past week is anything to go by, investor sentiment for SI-BONE isn't positive, so let's see if there's a mismatch between fundamentals and the share price.

Because SI-BONE 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. When a company doesn't make profits, we'd generally hope to see good revenue growth. As you can imagine, fast revenue growth, when maintained, often leads to fast profit growth.

Over three years, SI-BONE grew revenue at 21% per year. That is faster than most pre-profit companies. The share price drop of 10% per year over three years would be considered disappointing by many, so you might argue the company is getting little credit for its impressive revenue growth. It's possible that the prior share price assumed unrealistically high future growth. Still, with high hopes now tempered, now might prove to be an opportunity to buy.

The company's revenue and earnings (over time) are depicted in the image below (click to see the exact numbers).

Balance sheet strength is crucial. It might be well worthwhile taking a look at our free report on how its financial position has changed over time.

A Different Perspective

SI-BONE shareholders are down 27% for the year, but the market itself is up 21%. However, keep in mind that even the best stocks will sometimes underperform the market over a twelve month period. Regrettably, last year's performance caps off a bad run, with the shareholders facing a total loss of 4% per year over five years. Generally speaking long term share price weakness can be a bad sign, though contrarian investors might want to research the stock in hope of a turnaround. 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 instance, we've identified 3 warning signs for SI-BONE that you should be aware of.

Of course SI-BONE may not be the best stock to buy. So you may wish to see this free collection of growth stocks.

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.