The simplest way to benefit from a rising market is to buy an index fund. But if you buy individual stocks, you can do both better or worse than that. For example, the O-I Glass, Inc. (NYSE:OI) share price is down 35% in the last year. That's disappointing when you consider the market returned 22%. However, the longer term returns haven't been so bad, with the stock down 18% in the last three years.

It's worthwhile assessing if the company's economics have been moving in lockstep with these underwhelming shareholder returns, or if there is some disparity between the two. So let's do just that.

Check out our latest analysis for O-I Glass

To quote Buffett, 'Ships will sail around the world but the Flat Earth Society will flourish. There will continue to be wide discrepancies between price and value in the marketplace...' 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 the last year O-I Glass saw its earnings per share drop below zero. Some investors no doubt dumped the stock as a result. However, there may be an opportunity for investors if the company can recover.

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

It's probably worth noting we've seen significant insider buying in the last quarter, which we consider a positive. That said, we think earnings and revenue growth trends are even more important factors to consider. Before buying or selling a stock, we always recommend a close examination of historic growth trends, available here..

A Different Perspective

O-I Glass shareholders are down 35% for the year, but the market itself is up 22%. 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. Longer term investors wouldn't be so upset, since they would have made 3%, 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. Take risks, for example - O-I Glass has 1 warning sign we think you should be aware of.

There are plenty of other companies that have insiders buying up shares. You probably do not want to miss this free list of undervalued small cap companies that insiders are buying.