# Read This Before You Buy Martin Marietta Materials, Inc. (NYSE:MLM) Because Of Its P/E Ratio

The goal of this article is to teach you how to use price to earnings ratios (P/E ratios). We’ll apply a basic P/E ratio analysis to Martin Marietta Materials, Inc.’s (NYSE:MLM), to help you decide if the stock is worth further research. Martin Marietta Materials has a P/E ratio of 29.07, based on the last twelve months. That corresponds to an earnings yield of approximately 3.4%.

See our latest analysis for Martin Marietta Materials

### How Do You Calculate Martin Marietta Materials’s P/E Ratio?

The formula for price to earnings is:

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

Or for Martin Marietta Materials:

P/E of 29.07 = USD266.74 ÷ USD9.18 (Based on the year to September 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.

### Does Martin Marietta Materials Have A Relatively High Or Low P/E For Its Industry?

We can get an indication of market expectations by looking at the P/E ratio. As you can see below Martin Marietta Materials has a P/E ratio that is fairly close for the average for the basic materials industry, which is 30.0.

That indicates that the market expects Martin Marietta Materials will perform roughly in line with other companies in its industry. If the company has better than average prospects, then the market might be underestimating it. Further research into factors such as insider buying and selling, could help you form your own view on whether that is likely.

### 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. That’s because companies that grow earnings per share quickly will rapidly increase the ‘E’ in the equation. That means unless the share price increases, the P/E will reduce in a few years. So while a stock may look expensive based on past earnings, it could be cheap based on future earnings.

Martin Marietta Materials saw earnings per share decrease by 23% last year. But over the longer term (5 years) earnings per share have increased by 30%.

### 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. In other words, it does not consider any debt or cash that the company may have on the balance sheet. 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 expenditure might be good or bad, in the long term, but the point here is that the balance sheet is not reflected by this ratio.

### How Does Martin Marietta Materials’s Debt Impact Its P/E Ratio?

Martin Marietta Materials has net debt worth 17% of its market capitalization. It would probably deserve a higher P/E ratio if it was net cash, since it would have more options for growth.

### The Bottom Line On Martin Marietta Materials’s P/E Ratio

Martin Marietta Materials has a P/E of 29.1. That’s higher than the average in its market, which is 19.0. With some debt but no EPS growth last year, the market has high expectations of future profits.

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 visual report on analyst forecasts could hold the key to an excellent investment decision.

You might be able to find a better buy than Martin Marietta Materials. 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.