O-I Glass (NYSE:OI) shareholders are up 7.7% this past week, but still in the red over the last year

O-I Glass, Inc. (NYSE:OI) shareholders should be happy to see the share price up 12% in the last month. But that doesn't change the reality of under-performance over the last twelve months. In fact, the price has declined 35% in a year, falling short of the returns you could get by investing in an index fund.

While the stock has risen 7.7% in the past week but long term shareholders are still in the red, let's see what the fundamentals can tell us.

See our latest analysis for O-I Glass

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.

During the last year O-I Glass saw its earnings per share drop below zero. While this may prove temporary, we'd consider it a negative, so it doesn't surprise us that the stock price is down. However, there may be an opportunity for investors if the company can recover.

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

It's good to see that there was some significant insider buying in the last three months. That's 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

While the broader market gained around 25% in the last year, O-I Glass shareholders lost 35%. 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 6%, each year, over five years. If the fundamental data continues to indicate long term sustainable growth, the current sell-off could be an opportunity worth considering. I find it very interesting to look at share price over the long term as a proxy for business performance. But to truly gain insight, we need to consider other information, too. Even so, be aware that O-I Glass is showing 1 warning sign in our investment analysis , you should know about...

O-I Glass is not the only stock that insiders are buying. For those who like to find lesser know companies 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 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.