Time Watch Investments Limited (HKG:2033) shares have had a really impressive month, gaining 34% after a shaky period beforehand. Notwithstanding the latest gain, the annual share price return of 5.9% isn't as impressive.

Following the firm bounce in price, Time Watch Investments' price-to-earnings (or "P/E") ratio of 25x might make it look like a strong sell right now compared to the market in Hong Kong, where around half of the companies have P/E ratios below 9x and even P/E's below 4x are quite common. However, the P/E might be quite high for a reason and it requires further investigation to determine if it's justified.

Time Watch Investments has been doing a good job lately as it's been growing earnings at a solid pace. One possibility is that the P/E is high because investors think this respectable earnings growth will be enough to outperform the broader market in the near future. If not, then existing shareholders may be a little nervous about the viability of the share price.

View our latest analysis for Time Watch Investments

Is There Enough Growth For Time Watch Investments?

The only time you'd be truly comfortable seeing a P/E as steep as Time Watch Investments' is when the company's growth is on track to outshine the market decidedly.

If we review the last year of earnings growth, the company posted a worthy increase of 13%. However, this wasn't enough as the latest three year period has seen an unpleasant 73% overall drop in EPS. 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 24% 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 Time Watch Investments' 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.

What We Can Learn From Time Watch Investments' P/E?

The strong share price surge has got Time Watch Investments' P/E rushing to great heights as well. Using the price-to-earnings ratio alone to determine if you should sell your stock isn't sensible, however it can be a practical guide to the company's future prospects.

We've established that Time Watch Investments currently trades on a much higher than expected P/E since its recent earnings have been in decline over the medium-term. 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.

Before you take the next step, you should know about the 2 warning signs for Time Watch Investments (1 is a bit concerning!) that we have uncovered.

Of course, you might find a fantastic investment by looking at a few good candidates. So take a peek at this free list of companies with a strong growth track record, trading on a low P/E.

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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.