There's Reason For Concern Over Shinsung ST Co., Ltd.'s (KOSDAQ:416180) Massive 26% Price Jump

Shinsung ST Co., Ltd. (KOSDAQ:416180) shares have continued their recent momentum with a 26% gain in the last month alone. Looking back a bit further, it's encouraging to see the stock is up 41% in the last year.

Following the firm bounce in price, Shinsung ST's price-to-earnings (or "P/E") ratio of 45x might make it look like a strong sell right now compared to the market in Korea, where around half of the companies have P/E ratios below 11x and even P/E's below 6x are quite common. Although, it's not wise to just take the P/E at face value as there may be an explanation why it's so lofty.

For instance, Shinsung ST's receding earnings in recent times would have to be some food for thought. It might be that many expect the company to still outplay most other companies over the coming period, which has kept the P/E from collapsing. If not, then existing shareholders may be quite nervous about the viability of the share price.

View our latest analysis for Shinsung ST

We don't have analyst forecasts, but you can see how recent trends are setting up the company for the future by checking out our free report on Shinsung ST's earnings, revenue and cash flow.

What Are Growth Metrics Telling Us About The High P/E?

In order to justify its P/E ratio, Shinsung ST would need to produce outstanding growth well in excess of the market.

Retrospectively, the last year delivered a frustrating 53% decrease to the company's bottom line. This means it has also seen a slide in earnings over the longer-term as EPS is down 42% in total over the last three years. So unfortunately, we have to acknowledge that the company has not done a great job of growing earnings over that time.

Comparing that to the market, which is predicted to deliver 33% growth in the next 12 months, the company's downward momentum based on recent medium-term earnings results is a sobering picture.

In light of this, it's alarming that Shinsung ST's P/E sits above the majority of other companies. Apparently many investors in the company are way more bullish than recent times would indicate and aren't willing to let go of their stock at any price. Only the boldest would assume these prices are sustainable as a continuation of recent earnings trends is likely to weigh heavily on the share price eventually.

The Key Takeaway

Shares in Shinsung ST have built up some good momentum lately, which has really inflated its P/E. We'd say the price-to-earnings ratio's power isn't primarily as a valuation instrument but rather to gauge current investor sentiment and future expectations.

Our examination of Shinsung ST revealed its shrinking earnings over the medium-term aren't impacting its high P/E anywhere near as much as we would have predicted, given the market is set to grow. Right now we are increasingly uncomfortable with the high P/E as this earnings performance is highly unlikely to support such positive sentiment for long. If recent medium-term earnings trends continue, it will place shareholders' investments at significant risk and potential investors in danger of paying an excessive premium.

It's always necessary to consider the ever-present spectre of investment risk. We've identified 2 warning signs with Shinsung ST, and understanding them should be part of your investment process.

If P/E ratios interest you, you may wish to see this free collection of other companies with strong earnings growth and low P/E ratios.

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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.