It hasn't been the best quarter for Voyager Therapeutics, Inc. (NASDAQ:VYGR) shareholders, since the share price has fallen 21% in that time. But that shouldn't obscure the pleasing returns achieved by shareholders over the last three years. In the last three years the share price is up, 58%: better than the market.

So let's investigate and see if the longer term performance of the company has been in line with the underlying business' progress.

See our latest analysis for Voyager Therapeutics

In his essay The Superinvestors of Graham-and-Doddsville Warren Buffett described how share prices do not always rationally reflect the value of a business. 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.

Over the last three years, Voyager Therapeutics failed to grow earnings per share, which fell 30% (annualized).

Thus, it seems unlikely that the market is focussed on EPS growth at the moment. Since the change in EPS doesn't seem to correlate with the change in share price, it's worth taking a look at other metrics.

It may well be that Voyager Therapeutics revenue growth rate of 46% over three years has convinced shareholders to believe in a brighter future. In that case, the company may be sacrificing current earnings per share to drive growth, and maybe shareholder's faith in better days ahead will be rewarded.

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

This free interactive report on Voyager Therapeutics' balance sheet strength is a great place to start, if you want to investigate the stock further.

A Different Perspective

While the broader market gained around 35% in the last year, Voyager Therapeutics shareholders lost 5.5%. 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, longer term shareholders are suffering worse, given the loss of 9% doled out over the last five years. We would want clear information suggesting the company will grow, before taking the view that the share price will stabilize. 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. Even so, be aware that Voyager Therapeutics is showing 3 warning signs in our investment analysis , and 1 of those shouldn't be ignored...