With a price-to-earnings (or "P/E") ratio of 16x TriNet Group, Inc. (NYSE:TNET) may be sending bullish signals at the moment, given that almost half of all companies in the United States have P/E ratios greater than 19x and even P/E's higher than 33x are not unusual. However, the P/E might be low for a reason and it requires further investigation to determine if it's justified.

TriNet Group certainly has been doing a good job lately as its earnings growth has been positive while most other companies have been seeing their earnings go backwards. One possibility is that the P/E is low because investors think the company's earnings are going to fall away like everyone else's soon. If you like the company, you'd be hoping this isn't the case so that you could potentially pick up some stock while it's out of favour.

If you'd like to see what analysts are forecasting going forward, you should check out our free report on TriNet Group.

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

In order to justify its P/E ratio, TriNet Group would need to produce sluggish growth that's trailing the market.

Retrospectively, the last year delivered a decent 8.3% gain to the company's bottom line. This was backed up an excellent period prior to see EPS up by 67% in total over the last three years. Therefore, it's fair to say the earnings growth recently has been superb for the company.

Turning to the outlook, the next three years should generate growth of 1.2% per year as estimated by the six analysts watching the company. That's shaping up to be materially lower than the 10% each year growth forecast for the broader market.

In light of this, it's understandable that TriNet Group's P/E sits below the majority of other companies. Apparently many shareholders weren't comfortable holding on while the company is potentially eyeing a less prosperous future.

The Key Takeaway

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 TriNet Group maintains its low P/E on the weakness of its forecast growth being lower than the wider market, as expected. Right now shareholders are accepting the low P/E as they concede future earnings probably won't provide any pleasant surprises. Unless these conditions improve, they will continue to form a barrier for the share price around these levels.

Before you settle on your opinion, we've discovered 2 warning signs for TriNet Group that you should be aware of.

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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