Newcapec Electronics Co., Ltd. (SZSE:300248) shareholders won't be pleased to see that the share price has had a very rough month, dropping 28% and undoing the prior period's positive performance. The recent drop has obliterated the annual return, with the share price now down 6.0% over that longer period.

In spite of the heavy fall in price, it's still not a stretch to say that Newcapec Electronics' price-to-earnings (or "P/E") ratio of 37.3x right now seems quite "middle-of-the-road" compared to the market in China, where the median P/E ratio is around 34x. While this might not raise any eyebrows, if the P/E ratio is not justified investors could be missing out on a potential opportunity or ignoring looming disappointment.

As an illustration, earnings have deteriorated at Newcapec Electronics over the last year, which is not ideal at all. One possibility is that the P/E is moderate because investors think the company might still do enough to be in line with the broader market in the near future. If not, then existing shareholders may be a little nervous about the viability of the share price.

How Is Newcapec Electronics' Growth Trending?

Newcapec Electronics' P/E ratio would be typical for a company that's only expected to deliver moderate growth, and importantly, perform in line with the market.

Retrospectively, the last year delivered a frustrating 11% 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 23% in total over the last three years. Accordingly, shareholders would have felt downbeat about the medium-term rates of earnings growth.

In contrast to the company, the rest of the market is expected to grow by 38% over the next year, which really puts the company's recent medium-term earnings decline into perspective.

In light of this, it's somewhat alarming that Newcapec Electronics' P/E sits in line with the majority of other companies. Apparently many investors in the company are way less bearish than recent times would indicate and aren't willing to let go of their stock right now. Only the boldest would assume these prices are sustainable as a continuation of recent earnings trends is likely to weigh on the share price eventually.

The Key Takeaway

Following Newcapec Electronics' share price tumble, its P/E is now hanging on to the median market 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 Newcapec Electronics revealed its shrinking earnings over the medium-term aren't impacting its P/E as much as we would have predicted, given the market is set to grow. Right now we are uncomfortable with the P/E as this earnings performance is unlikely to support a more positive sentiment for long. If recent medium-term earnings trends continue, it will place shareholders' investments at risk and potential investors in danger of paying an unnecessary premium.

Plus, you should also learn about these 3 warning signs we've spotted with Newcapec Electronics (including 2 which are concerning).

It's important to make sure you look for a great company, not just the first idea you come across. So take a peek at this free list of interesting companies with strong recent earnings growth (and a low P/E).

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