This article is written for those who want to get better at using price to earnings ratios (P/E ratios). We'll show how you can use WH Group Limited's (HKG:288) P/E ratio to inform your assessment of the investment opportunity. Based on the last twelve months, WH Group's P/E ratio is 18.27. That means that at current prices, buyers pay HK$18.27 for every HK$1 in trailing yearly profits.

View our latest analysis for WH Group

How Do You Calculate WH Group's P/E Ratio?

The formula for P/E is:

Price to Earnings Ratio = Price per Share (in the reporting currency) ÷ Earnings per Share (EPS)

Or for WH Group:

P/E of 18.27 = $1.17 (Note: this is the share price in the reporting currency, namely, USD ) ÷ $0.064 (Based on the year to December 2018.)

Is A High Price-to-Earnings Ratio Good?

A higher P/E ratio means that investors are paying a higher price for each HK$1 of company 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.

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. Earnings growth means that in the future the 'E' will be higher. And in that case, the P/E ratio itself will drop rather quickly. Then, a lower P/E should attract more buyers, pushing the share price up.

WH Group saw earnings per share decrease by 18% last year. But EPS is up 3.8% over the last 3 years.

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

The P/E ratio essentially measures market expectations of a company. You can see in the image below that the average P/E (16.1) for companies in the food industry is lower than WH Group's P/E.

WH Group's P/E tells us that market participants think the company will perform better than its industry peers, going forward. The market is optimistic about the future, but that doesn't guarantee future growth. So further research is always essential. I often monitor director buying and selling.

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

Don't forget that the P/E ratio considers market capitalization. That means it doesn't take debt or cash into account. 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).

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.