Micro Digital (KOSDAQ:305090) pops 12% this week, taking five-year gains to 337%

Long term investing can be life changing when you buy and hold the truly great businesses. And we've seen some truly amazing gains over the years. To wit, the Micro Digital Co., Ltd. (KOSDAQ:305090) share price has soared 337% over five years. And this is just one example of the epic gains achieved by some long term investors. It's also good to see the share price up 61% over the last quarter.

Since the stock has added ₩29b to its market cap in the past week alone, let's see if underlying performance has been driving long-term returns.

See our latest analysis for Micro Digital

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 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 five years of share price growth, Micro Digital moved from a loss to profitability. Sometimes, the start of profitability is a major inflection point that can signal fast earnings growth to come, which in turn justifies very strong share price gains.

The company's earnings per share (over time) is depicted in the image below (click to see the exact numbers).

It is of course excellent to see how Micro Digital has grown profits over the years, but the future is more important for shareholders. It might be well worthwhile taking a look at our free report on how its financial position has changed over time.

A Different Perspective

It's nice to see that Micro Digital shareholders have received a total shareholder return of 114% over the last year. That's better than the annualised return of 34% over half a decade, implying that the company is doing better recently. Someone with an optimistic perspective could view the recent improvement in TSR as indicating that the business itself is getting better with time. 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. Consider for instance, the ever-present spectre of investment risk. We've identified 3 warning signs with Micro Digital , and understanding them should be part of your investment process.

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.