Tower Semiconductor's (NASDAQ:TSEM) stock is up by a considerable 21% over the past three months. We wonder if and what role the company's financials play in that price change as a company's long-term fundamentals usually dictate market outcomes. Particularly, we will be paying attention to Tower Semiconductor's ROE today.

ROE or return on equity is a useful tool to assess how effectively a company can generate returns on the investment it received from its shareholders. In other words, it is a profitability ratio which measures the rate of return on the capital provided by the company's shareholders.

View our latest analysis for Tower Semiconductor

How To Calculate Return On Equity?

The formula for return on equity is:

Return on Equity = Net Profit (from continuing operations) ÷ Shareholders' Equity

So, based on the above formula, the ROE for Tower Semiconductor is:

7.9% = US$206m ÷ US$2.6b (Based on the trailing twelve months to September 2024).

The 'return' refers to a company's earnings over the last year. That means that for every $1 worth of shareholders' equity, the company generated $0.08 in profit.

What Is The Relationship Between ROE And Earnings Growth?

Thus far, we have learned that ROE measures how efficiently a company is generating its profits. We now need to evaluate how much profit the company reinvests or "retains" for future growth which then gives us an idea about the growth potential of the company. Assuming all else is equal, companies that have both a higher return on equity and higher profit retention are usually the ones that have a higher growth rate when compared to companies that don't have the same features.

A Side By Side comparison of Tower Semiconductor's Earnings Growth And 7.9% ROE

When you first look at it, Tower Semiconductor's ROE doesn't look that attractive. We then compared the company's ROE to the broader industry and were disappointed to see that the ROE is lower than the industry average of 11%. In spite of this, Tower Semiconductor was able to grow its net income considerably, at a rate of 38% in the last five years. Therefore, there could be other reasons behind this growth. For instance, the company has a low payout ratio or is being managed efficiently.

Next, on comparing with the industry net income growth, we found that Tower Semiconductor's growth is quite high when compared to the industry average growth of 21% in the same period, which is great to see.

The basis for attaching value to a company is, to a great extent, tied to its earnings growth. What investors need to determine next is if the expected earnings growth, or the lack of it, is already built into the share price. This then helps them determine if the stock is placed for a bright or bleak future. If you're wondering about Tower Semiconductor's's valuation, check out this gauge of its price-to-earnings ratio, as compared to its industry.

Is Tower Semiconductor Efficiently Re-investing Its Profits?

Tower Semiconductor doesn't pay any regular dividends to its shareholders, meaning that the company has been reinvesting all of its profits into the business. This is likely what's driving the high earnings growth number discussed above.

Summary

On the whole, we do feel that Tower Semiconductor has some positive attributes. With a high rate of reinvestment, albeit at a low ROE, the company has managed to see a considerable growth in its earnings. With that said, the latest industry analyst forecasts reveal that the company's earnings growth is expected to slow down. Are these analysts expectations based on the broad expectations for the industry, or on the company's fundamentals? Click here to be taken to our analyst's forecasts page for the company.

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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.