U.S. Markets open in 6 hrs 23 mins

# Here's How P/E Ratios Can Help Us Understand STERIS plc (NYSE:STE)

Today, we'll introduce the concept of the P/E ratio for those who are learning about investing. We'll apply a basic P/E ratio analysis to STERIS plc's (NYSE:STE), to help you decide if the stock is worth further research. STERIS has a P/E ratio of 41.57, based on the last twelve months. That is equivalent to an earnings yield of about 2.4%.

### How Do I Calculate STERIS's Price To Earnings Ratio?

The formula for P/E is:

Price to Earnings Ratio = Share Price Ã· Earnings per Share (EPS)

Or for STERIS:

P/E of 41.57 = \$149.44 Ã· \$3.59 (Based on the trailing twelve months to March 2019.)

### Is A High Price-to-Earnings Ratio Good?

A higher P/E ratio implies that investors pay a higher price for the earning power of the business. That is not a good or a bad thing per se, but a high P/E does imply buyers are optimistic about the future.

### How Does STERIS's P/E Ratio Compare To Its Peers?

The P/E ratio indicates whether the market has higher or lower expectations of a company. You can see in the image below that the average P/E (42.2) for companies in the medical equipment industry is roughly the same as STERIS's P/E.

Its P/E ratio suggests that STERIS shareholders think that in the future it will perform about the same as other companies in its industry classification. The company could surprise by performing better than average, in the future. Checking factors such as director buying and selling. could help you form your own view on if that will happen.

### How Growth Rates Impact P/E Ratios

Generally speaking the rate of earnings growth has a profound impact on a company's P/E multiple. That's because companies that grow earnings per share quickly will rapidly increase the 'E' in the equation. Therefore, even if you pay a high multiple of earnings now, that multiple will become lower in the future. A lower P/E should indicate the stock is cheap relative to others -- and that may attract buyers.

STERIS increased earnings per share by 5.1% last year. And its annual EPS growth rate over 5 years is 10%.

### Don't Forget: The P/E Does Not Account For Debt or Bank Deposits

One drawback of using a P/E ratio is that it considers market capitalization, but not the balance sheet. In other words, it does not consider any debt or cash that the company may have on the balance sheet. In theory, a company can lower its future P/E ratio by using cash or debt to invest in 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.

### How Does STERIS's Debt Impact Its P/E Ratio?

Net debt totals just 7.6% of STERIS's market cap. 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 STERIS's P/E Ratio

STERIS's P/E is 41.6 which is above average (18) in its market. With modest debt relative to its size, and modest earnings growth, the market is likely expecting sustained long-term growth, if not a near-term improvement.

Investors should be looking to buy stocks that the market is wrong about. As value investor Benjamin Graham famously said, 'In the short run, the market is a voting machine but in the long run, it is a weighing machine.' So this free report on the analyst consensus forecasts could help you make a master move on this stock.

You might be able to find a better buy than STERIS. 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 editorial-team@simplywallst.com. 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.