SGS SA's (VTX:SGSN) price-to-earnings (or "P/E") ratio of 28.5x might make it look like a sell right now compared to the market in Switzerland, where around half of the companies have P/E ratios below 20x and even P/E's below 14x are quite common. However, the P/E might be high for a reason and it requires further investigation to determine if it's justified.
Recent times haven't been advantageous for SGS as its earnings have been rising slower than most other companies. It might be that many expect the uninspiring earnings performance to recover significantly, which has kept the P/E from collapsing. If not, then existing shareholders may be very nervous about the viability of the share price.
See our latest analysis for SGS
What Are Growth Metrics Telling Us About The High P/E?
SGS' P/E ratio would be typical for a company that's expected to deliver solid growth, and importantly, perform better than the market.
Taking a look back first, we see that the company managed to grow earnings per share by a handy 2.8% last year. Ultimately though, it couldn't turn around the poor performance of the prior period, with EPS shrinking 8.6% 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.
Shifting to the future, estimates from the analysts covering the company suggest earnings should grow by 11% per annum over the next three years. That's shaping up to be similar to the 9.5% per annum growth forecast for the broader market.
With this information, we find it interesting that SGS is trading at a high P/E compared to the market. Apparently many investors in the company are more bullish than analysts indicate and aren't willing to let go of their stock right now. These shareholders may be setting themselves up for disappointment if the P/E falls to levels more in line with the growth outlook.

The Key Takeaway
It's argued the price-to-earnings ratio is an inferior measure of value within certain industries, but it can be a powerful business sentiment indicator.
We've established that SGS currently trades on a higher than expected P/E since its forecast growth is only in line with the wider market. When we see an average earnings outlook with market-like growth, we suspect the share price is at risk of declining, sending the high P/E lower. Unless these conditions improve, it's challenging to accept these prices as being reasonable.
Before you take the next step, you should know about the 2 warning signs for SGS that we have uncovered.
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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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.
About SWX:SGSN
SGS
Provides inspection, testing, and certification services in Europe, Africa, the Middle East, Latin America, North America, and the Asia Pacific.
Solid track record average dividend payer.
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