P/E Ratio

The Price-to-Earnings (P/E) ratio is one of the most widely used tools for valuing a stock. It is calculated by dividing the current share price by the company's earnings per share (EPS). A P/E of 20 means investors are paying 20 times the company's annual profit for each share.

A high P/E suggests investors expect strong future growth and are willing to pay a premium today for those anticipated earnings. A low P/E can indicate an undervalued company, a slow-growth business, or one facing difficulties. Context matters enormously—a P/E is most useful when compared to industry peers, the company's own historical range, or broader market averages.

The P/E ratio has limitations. It uses backward-looking earnings, which may not reflect future prospects. Companies with negative earnings have no meaningful P/E. For a more forward-looking view, analysts often use the forward P/E, based on projected earnings for the next twelve months.