Every investor on earth makes bad calls sometimes. But really big losses can really drag down an overall portfolio. So consider, for a moment, the misfortune of Wolfspeed, Inc. (NYSE:WOLF) investors who have held the stock for three years as it declined a whopping 76%. That would be a disturbing experience. The more recent news is of little comfort, with the share price down 61% in a year. The falls have accelerated recently, with the share price down 41% in the last three months.

After losing 14% this past week, it's worth investigating the company's fundamentals to see what we can infer from past performance.

Given that Wolfspeed didn't make a profit in the last twelve months, we'll focus on revenue growth to form a quick view of its business development. Shareholders of unprofitable companies usually expect strong revenue growth. Some companies are willing to postpone profitability to grow revenue faster, but in that case one does expect good top-line growth.

In the last three years, Wolfspeed saw its revenue grow by 25% per year, compound. That is faster than most pre-profit companies. So on the face of it we're really surprised to see the share price down 21% a year in the same time period. You'd want to take a close look at the balance sheet, as well as the losses. Sometimes fast revenue growth doesn't lead to profits. Unless the balance sheet is strong, the company might have to raise capital.

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

It's probably worth noting we've seen significant insider buying in the last quarter, which we consider a positive. That said, we think earnings and revenue growth trends are even more important factors to consider. This free report showing analyst forecasts should help you form a view on Wolfspeed

A Different Perspective

While the broader market gained around 30% in the last year, Wolfspeed shareholders lost 61%. Even the share prices of good stocks drop sometimes, but we want to see improvements in the fundamental metrics of a business, before getting too interested. Regrettably, last year's performance caps off a bad run, with the shareholders facing a total loss of 9% 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. Consider for instance, the ever-present spectre of investment risk. We've identified 2 warning signs with Wolfspeed , and understanding them should be part of your investment process.

Wolfspeed is not the only stock that insiders are buying. For those who like to find winning investments this free list of growing 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.