By buying an index fund, you can roughly match the market return with ease. But if you choose individual stocks with prowess, you can make superior returns. For example, AXT, Inc. (NASDAQ:AXTI) shareholders have seen the share price rise 56% over three years, well in excess of the market return (28%, not including dividends).

Now it's worth having a look at the company's fundamentals too, because that will help us determine if the long term shareholder return has matched the performance of the underlying business.

View our latest analysis for AXT

There is no denying that markets are sometimes efficient, but prices do not always reflect underlying business performance. One way to examine how market sentiment has changed over time is to look at the interaction between a company's share price and its earnings per share (EPS).

During three years of share price growth, AXT achieved compound earnings per share growth of 34% per year. This EPS growth is higher than the 16% average annual increase in the share price. So one could reasonably conclude that the market has cooled on the stock.

The graphic below depicts how EPS has changed over time (unveil the exact values by clicking on the image).

It is of course excellent to see how AXT has grown profits over the years, but the future is more important for shareholders. Take a more thorough look at AXT's financial health with this free report on its balance sheet.

A Different Perspective

We regret to report that AXT shareholders are down 32% for the year. Unfortunately, that's worse than the broader market decline of 15%. Having said that, it's inevitable that some stocks will be oversold in a falling market. The key is to keep your eyes on the fundamental developments. Regrettably, last year's performance caps off a bad run, with the shareholders facing a total loss of 4% per year over five years. 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. To that end, you should learn about the 2 warning signs we've spotted with AXT (including 1 which doesn't sit too well with us) .

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 US exchanges.