MannKind's (NASDAQ:MNKD) investors will be pleased with their impressive 183% return over the last three years

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The most you can lose on any stock (assuming you don't use leverage) is 100% of your money. But when you pick a company that is really flourishing, you can make more than 100%. For instance the MannKind Corporation (NASDAQ:MNKD) share price is 183% higher than it was three years ago. Most would be happy with that. On top of that, the share price is up 52% in about a quarter.

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.

View our latest analysis for MannKind

Given that MannKind 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. That's because it's hard to be confident a company will be sustainable if revenue growth is negligible, and it never makes a profit.

MannKind's revenue trended up 6.8% each year over three years. Considering the company is losing money, we think that rate of revenue growth is uninspiring. In contrast, the stock has popped 41% per year in that time - an impressive result. Shareholders should be pretty happy with that, although interested investors might want to examine the financial data more closely to see if the gains are really justified. It seems likely that the market is pretty optimistic about MannKind, given it is losing money.

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

earnings-and-revenue-growth
earnings-and-revenue-growth

We consider it positive that insiders have made significant purchases in the last year. Even so, future earnings will be far more important to whether current shareholders make money. If you are thinking of buying or selling MannKind stock, you should check out this free report showing analyst profit forecasts.

A Different Perspective

We're pleased to report that MannKind shareholders have received a total shareholder return of 22% over one year. That gain is better than the annual TSR over five years, which is 14%. Therefore it seems like sentiment around the company has been positive lately. In the best case scenario, this may hint at some real business momentum, implying that now could be a great time to delve deeper. 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 MannKind (at least 1 which is potentially serious) , and understanding them should be part of your investment process.

MannKind is not the only stock insiders are buying. So take a peek at this free list of growing companies with insider buying.

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

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