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Read This Before You Buy Senior plc (LON:SNR) Because Of Its P/E Ratio

Simply Wall St

Today, we'll introduce the concept of the P/E ratio for those who are learning about investing. We'll show how you can use Senior plc's (LON:SNR) P/E ratio to inform your assessment of the investment opportunity. Based on the last twelve months, Senior's P/E ratio is 16.31. That means that at current prices, buyers pay £16.31 for every £1 in trailing yearly profits.

Check out our latest analysis for Senior

How Do You Calculate A P/E Ratio?

The formula for price to earnings is:

Price to Earnings Ratio = Share Price ÷ Earnings per Share (EPS)

Or for Senior:

P/E of 16.31 = £1.78 ÷ £0.11 (Based on the trailing twelve months to June 2019.)

Is A High Price-to-Earnings Ratio Good?

The higher the P/E ratio, the higher the price tag of a business, relative to its trailing earnings. That isn't a good or a bad thing on its own, but a high P/E means that buyers have a higher opinion of the business's prospects, relative to stocks with a lower P/E.

Does Senior Have A Relatively High Or Low P/E For Its Industry?

The P/E ratio indicates whether the market has higher or lower expectations of a company. We can see in the image below that the average P/E (32.3) for companies in the aerospace & defense industry is higher than Senior's P/E.

LSE:SNR Price Estimation Relative to Market, December 19th 2019

Senior's P/E tells us that market participants think it will not fare as well as its peers in the same industry. Since the market seems unimpressed with Senior, it's quite possible it could surprise on the upside. If you consider the stock interesting, further research is recommended. For example, I often monitor director buying and selling.

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. If earnings are growing quickly, then the 'E' in the equation will increase faster than it would otherwise. That means even if the current P/E is high, it will reduce over time if the share price stays flat. And as that P/E ratio drops, the company will look cheap, unless its share price increases.

Senior saw earnings per share decrease by 30% last year. But EPS is up 4.8% over the last 3 years. And it has shrunk its earnings per share by 9.4% per year over the last five years. This growth rate might warrant a below average P/E ratio.

A Limitation: P/E Ratios Ignore Debt and Cash In The Bank

One drawback of using a P/E ratio is that it considers market capitalization, but not the balance sheet. Thus, the metric does not reflect cash or debt held by the company. Theoretically, a business can improve its earnings (and produce a lower P/E in the future) by investing in growth. That means taking on debt (or spending its cash).

Spending on growth might be good or bad a few years later, but the point is that the P/E ratio does not account for the option (or lack thereof).

Is Debt Impacting Senior's P/E?

Senior has net debt equal to 25% of its market cap. While that's enough to warrant consideration, it doesn't really concern us.

The Verdict On Senior's P/E Ratio

Senior has a P/E of 16.3. That's below the average in the GB market, which is 17.9. With only modest debt, it's likely the lack of EPS growth at least partially explains the pessimism implied by the P/E ratio.

When the market is wrong about a stock, it gives savvy investors an opportunity. If it is underestimating a company, investors can make money by buying and holding the shares until the market corrects itself. 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 Senior. 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).

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.

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. Thank you for reading.