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The goal of this article is to teach you how to use price to earnings ratios (P/E ratios). To keep it practical, we'll show how Littelfuse, Inc.'s (NASDAQ:LFUS) P/E ratio could help you assess the value on offer. Looking at earnings over the last twelve months, Littelfuse has a P/E ratio of 25.41. That means that at current prices, buyers pay $25.41 for every $1 in trailing yearly profits.
How Do I Calculate A Price To Earnings Ratio?
The formula for P/E is:
Price to Earnings Ratio = Price per Share ÷ Earnings per Share (EPS)
Or for Littelfuse:
P/E of 25.41 = $168.51 ÷ $6.63 (Based on the year to March 2019.)
Is A High P/E Ratio Good?
The higher the P/E ratio, the higher the price tag of a business, relative to its trailing earnings. All else being equal, it's better to pay a low price -- but as Warren Buffett said, 'It's far better to buy a wonderful company at a fair price than a fair company at a wonderful price.'
How Growth Rates Impact P/E Ratios
Probably the most important factor in determining what P/E a company trades on is the earnings growth. If earnings are growing quickly, then the 'E' in the equation will increase faster than it would otherwise. And in that case, the P/E ratio itself will drop rather quickly. A lower P/E should indicate the stock is cheap relative to others -- and that may attract buyers.
Littelfuse increased earnings per share by a whopping 31% last year. And it has bolstered its earnings per share by 7.7% per year over the last five years. So we'd generally expect it to have a relatively high P/E ratio.
Does Littelfuse Have A Relatively High Or Low P/E For Its Industry?
One good way to get a quick read on what market participants expect of a company is to look at its P/E ratio. You can see in the image below that the average P/E (17.9) for companies in the electronic industry is lower than Littelfuse's P/E.
That means that the market expects Littelfuse will outperform other companies in its industry. The market is optimistic about the future, but that doesn't guarantee future growth. So investors should delve deeper. I like to check if company insiders have been buying or selling.
A Limitation: P/E Ratios Ignore Debt and Cash In The Bank
The 'Price' in P/E reflects the market capitalization of the company. So it won't reflect the advantage of cash, or disadvantage of debt. The exact same company would hypothetically deserve a higher P/E ratio if it had a strong balance sheet, than if it had a weak one with lots of debt, because a cashed up company can spend on growth.
Such spending might be good or bad, overall, but the key point here is that you need to look at debt to understand the P/E ratio in context.
So What Does Littelfuse's Balance Sheet Tell Us?
Littelfuse has net debt worth just 5.0% of its market capitalization. The market might award it a higher P/E ratio if it had net cash, but its unlikely this low level of net borrowing is having a big impact on the P/E multiple.
The Verdict On Littelfuse's P/E Ratio
Littelfuse's P/E is 25.4 which is above average (17.6) in the US market. The company is not overly constrained by its modest debt levels, and its recent EPS growth is nothing short of stand-out. So to be frank we are not surprised it has a high P/E ratio.
When the market is wrong about a stock, it gives savvy investors an opportunity. If the reality for a company is better than it expects, you can make money by buying and holding for the long term. So this free visualization of the analyst consensus on future earnings could help you make the right decision about whether to buy, sell, or hold.
You might be able to find a better buy than Littelfuse. If you want a selection of possible winners, check out this free list of interesting companies that trade on a P/E below 20 (but have proven they can grow earnings).
We aim to bring you long-term focused research analysis driven by fundamental data. Note that our analysis may not factor in the latest price-sensitive company announcements or qualitative material.
If you spot an error that warrants correction, please contact the editor at firstname.lastname@example.org. This article by Simply Wall St is general in nature. It does not constitute a recommendation to buy or sell any stock, and does not take account of your objectives, or your financial situation. Simply Wall St has no position in the stocks mentioned. Thank you for reading.