Lantronix, Inc. (NASDAQ:LTRX) shares have had a really impressive month, gaining 36% after a shaky period beforehand. Not all shareholders will be feeling jubilant, since the share price is still down a very disappointing 30% in the last twelve months.

Even after such a large jump in price, you could still be forgiven for feeling indifferent about Lantronix's P/S ratio of 1x, since the median price-to-sales (or "P/S") ratio for the Communications industry in the United States is also close to 1.2x. Although, it's not wise to simply ignore the P/S without explanation as investors may be disregarding a distinct opportunity or a costly mistake.

See our latest analysis for Lantronix

How Has Lantronix Performed Recently?

Recent times have been advantageous for Lantronix as its revenues have been rising faster than most other companies. It might be that many expect the strong revenue performance to wane, which has kept the P/S ratio from rising. 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 not quite in favour.

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

Is There Some Revenue Growth Forecasted For Lantronix?

In order to justify its P/S ratio, Lantronix would need to produce growth that's similar to the industry.

If we review the last year of revenue growth, the company posted a terrific increase of 22%. Pleasingly, revenue has also lifted 97% in aggregate from three years ago, thanks to the last 12 months of growth. Accordingly, shareholders would have definitely welcomed those medium-term rates of revenue growth.

Shifting to the future, estimates from the five analysts covering the company suggest revenue should grow by 2.8% each year over the next three years. With the industry predicted to deliver 11% growth each year, the company is positioned for a weaker revenue result.

In light of this, it's curious that Lantronix's P/S sits in line with the majority of other companies. It seems most investors are ignoring the fairly limited growth expectations and are willing to pay up for exposure to the stock. Maintaining these prices will be difficult to achieve as this level of revenue growth is likely to weigh down the shares eventually.

What We Can Learn From Lantronix's P/S?

Its shares have lifted substantially and now Lantronix's P/S is back within range of the industry median. It's argued the price-to-sales ratio is an inferior measure of value within certain industries, but it can be a powerful business sentiment indicator.

When you consider that Lantronix's revenue growth estimates are fairly muted compared to the broader industry, it's easy to see why we consider it unexpected to be trading at its current P/S ratio. At present, we aren't confident in the P/S as the predicted future revenues aren't likely to support a more positive sentiment for long. Circumstances like this present a risk to current and prospective investors who may see share prices fall if the low revenue growth impacts the sentiment.

There are also other vital risk factors to consider before investing and we've discovered 2 warning signs for Lantronix that you should be aware of.

If strong companies turning a profit tickle your fancy, then you'll want to check out this free list of interesting companies that trade on a low P/E (but have proven they can grow earnings).

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