Even after rising 11% this past week, DIO (KOSDAQ:039840) shareholders are still down 51% over the past three years

DIO Corporation (KOSDAQ:039840) shareholders should be happy to see the share price up 16% in the last month. But that doesn't change the fact that the returns over the last three years have been disappointing. Indeed, the share price is down a tragic 51% in the last three years. So it is really good to see an improvement. After all, could be that the fall was overdone.

While the stock has risen 11% in the past week but long term shareholders are still in the red, let's see what the fundamentals can tell us.

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While the efficient markets hypothesis continues to be taught by some, it has been proven that markets are over-reactive dynamic systems, and investors are not always rational. 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).

Over the three years that the share price declined, DIO's earnings per share (EPS) dropped significantly, falling to a loss. Due to the loss, it's not easy to use EPS as a reliable guide to the business. But it's safe to say we'd generally expect the share price to be lower as a result!

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

Before buying or selling a stock, we always recommend a close examination of historic growth trends, available here.

A Different Perspective

We regret to report that DIO shareholders are down 13% for the year. Unfortunately, that's worse than the broader market decline of 5.7%. 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 6% 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. You could get a better understanding of DIO's growth by checking out this more detailed historical graph of earnings, revenue and cash flow.

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 South Korean 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.