It is doubtless a positive to see that the Ironwood Pharmaceuticals, Inc. (NASDAQ:IRWD) share price has gained some 102% in the last three months. But only the myopic could ignore the astounding decline over three years. Indeed, the share price is down a whopping 84% in the last three years. So it's about time shareholders saw some gains. But the more important question is whether the underlying business can justify a higher price still. While a drop like that is definitely a body blow, money isn't as important as health and happiness.

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

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 flawed but reasonable way to assess how sentiment around a company has changed is to compare the earnings per share (EPS) with the share price.

Ironwood Pharmaceuticals saw its share price decline over the three years in which its EPS also dropped, falling to a loss. Extraordinary items contributed to this situation. Since the company has fallen to a loss making position, it's hard to compare the change in EPS with the share price change. However, we can say we'd expect to see a falling share price in this scenario.

You can see how EPS has changed over time in the image below (click on the chart to see the exact values).

A Different Perspective

While the broader market gained around 16% in the last year, Ironwood Pharmaceuticals shareholders lost 65%. 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. Regrettably, last year's performance caps off a bad run, with the shareholders facing a total loss of 13% per year over five years. Generally speaking long term share price weakness can be a bad sign, though contrarian investors might want to research the stock in hope of a turnaround. It's always interesting to track share price performance over the longer term. But to understand Ironwood Pharmaceuticals better, we need to consider many other factors.

If you would prefer to check out another company -- one with potentially superior financials -- then do not miss this free list of companies that have proven they can grow earnings.

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

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.