If you are building a properly diversified stock portfolio, the chances are some of your picks will perform badly. But the last three years have been particularly tough on longer term AMN Healthcare Services, Inc. (NYSE:AMN) shareholders. Sadly for them, the share price is down 62% in that time. And over the last year the share price fell 49%, so we doubt many shareholders are delighted. More recently, the share price has dropped a further 21% in a month.

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

While markets are a powerful pricing mechanism, share prices reflect investor sentiment, not just underlying business performance. One imperfect but simple way to consider how the market perception of a company has shifted is to compare the change in the earnings per share (EPS) with the share price movement.

During the three years that the share price fell, AMN Healthcare Services' earnings per share (EPS) dropped by 10% each year. The share price decline of 28% is actually steeper than the EPS slippage. So it's likely that the EPS decline has disappointed the market, leaving investors hesitant to buy.

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

We like that insiders have been buying shares in the last twelve months. Even so, future earnings will be far more important to whether current shareholders make money. Dive deeper into the earnings by checking this interactive graph of AMN Healthcare Services' earnings, revenue and cash flow.

A Different Perspective

While the broader market gained around 24% in the last year, AMN Healthcare Services shareholders lost 49%. 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. Unfortunately, last year's performance may indicate unresolved challenges, given that it was worse than the annualised loss of 4% over the last half decade. We realise that Baron Rothschild has said investors should "buy when there is blood on the streets", but we caution that investors should first be sure they are buying a high quality business. 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. Take risks, for example - AMN Healthcare Services has 2 warning signs we think you should be aware of.

If you like to buy stocks alongside management, then you might just love this free list of companies. (Hint: most of them are flying under the radar).

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.