SunjinLtd (KRX:136490) earnings and shareholder returns have been trending downwards for the last three years, but the stock soars 10% this past week

It's nice to see the Sunjin Co.,Ltd. (KRX:136490) share price up 10% in a week. But over the last three years we've seen a quite serious decline. Indeed, the share price is down a tragic 59% in the last three years. So the improvement may be a real relief to some. After all, could be that the fall was overdone.

While the stock has risen 10% in the past week but long term shareholders are still in the red, let's see what the fundamentals can tell us.

AI is about to change healthcare. These 20 stocks are working on everything from early diagnostics to drug discovery. The best part - they are all under $10bn in marketcap - there is still time to get in early.

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.

SunjinLtd saw its EPS decline at a compound rate of 44% per year, over the last three years. This fall in the EPS is worse than the 25% compound annual share price fall. This suggests that the market retains some optimism around long term earnings stability, despite past EPS declines.

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

While the broader market lost about 5.2% in the twelve months, SunjinLtd shareholders did even worse, losing 16% (even including dividends). However, it could simply be that the share price has been impacted by broader market jitters. It might be worth keeping an eye on the fundamentals, in case there's a good opportunity. Regrettably, last year's performance caps off a bad run, with the shareholders facing a total loss of 3% 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. 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. For instance, we've identified 6 warning signs for SunjinLtd (1 is potentially serious) that you should be aware of.

If you are like me, then you will not want to miss this free list of undervalued small caps that insiders are buying.

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

Have feedback on this article? Concerned about the content? Get in touch with us directly. Alternatively, email editorial-team (at) simplywallst.com.

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.