The most you can lose on any stock (assuming you don't use leverage) is 100% of your money. But in contrast you can make much more than 100% if the company does well. For example, the Lantheus Holdings, Inc. (NASDAQ:LNTH) share price has soared 224% in the last three years. How nice for those who held the stock! On top of that, the share price is up 33% 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.

To paraphrase Benjamin Graham: Over the short term the market is a voting machine, but over the long term it's a weighing machine. By comparing earnings per share (EPS) and share price changes over time, we can get a feel for how investor attitudes to a company have morphed over time.

During three years of share price growth, Lantheus Holdings moved from a loss to profitability. Given the importance of this milestone, it's not overly surprising that the share price has increased strongly.

You can see below how EPS has changed over time (discover the exact values by clicking on the image).

It's probably worth noting that the CEO is paid less than the median at similar sized companies. It's always worth keeping an eye on CEO pay, but a more important question is whether the company will grow earnings throughout the years. Dive deeper into the earnings by checking this interactive graph of Lantheus Holdings' earnings, revenue and cash flow.

A Different Perspective

While the broader market gained around 23% in the last year, Lantheus Holdings shareholders lost 7.7%. However, keep in mind that even the best stocks will sometimes underperform the market over a twelve month period. Longer term investors wouldn't be so upset, since they would have made 24%, each year, over five years. It could be that the recent sell-off is an opportunity, so it may be worth checking the fundamental data for signs of a long term growth trend. 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. Consider for instance, the ever-present spectre of investment risk. We've identified 1 warning sign with Lantheus Holdings , and understanding them should be part of your investment process.

If you like to buy stocks alongside management, then you might just love this free list of companies. (Hint: many of them are unnoticed AND have attractive valuation).

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.