With a price-to-earnings (or "P/E") ratio of 10.3x Tower Semiconductor Ltd. (NASDAQ:TSEM) 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 34x are not unusual. Although, it's not wise to just take the P/E at face value as there may be an explanation why it's limited.

Tower Semiconductor 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 not, then existing shareholders have reason to be quite optimistic about the future direction of the share price.

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

Does Growth Match The Low P/E?

There's an inherent assumption that a company should underperform the market for P/E ratios like Tower Semiconductor's to be considered reasonable.

Taking a look back first, we see that the company grew earnings per share by an impressive 78% last year. The latest three year period has also seen an excellent 354% overall rise in EPS, aided by its short-term performance. Therefore, it's fair to say the earnings growth recently has been superb for the company.

Looking ahead now, EPS is anticipated to slump, contracting by 20% each year during the coming three years according to the four analysts following the company. With the market predicted to deliver 10% growth each year, that's a disappointing outcome.

In light of this, it's understandable that Tower Semiconductor's P/E would sit below the majority of other companies. Nonetheless, there's no guarantee the P/E has reached a floor yet with earnings going in reverse. There's potential for the P/E to fall to even lower levels if the company doesn't improve its profitability.

The Bottom Line On Tower Semiconductor's P/E

Typically, we'd caution against reading too much into price-to-earnings ratios when settling on investment decisions, though it can reveal plenty about what other market participants think about the company.

We've established that Tower Semiconductor maintains its low P/E on the weakness of its forecast for sliding earnings, as expected. Right now shareholders are accepting the low P/E as they concede future earnings probably won't provide any pleasant surprises. It's hard to see the share price rising strongly in the near future under these circumstances.

Having said that, be aware Tower Semiconductor is showing 2 warning signs in our investment analysis, and 1 of those is significant.

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.