What is P/E ratio and how to use it?

The Price-to-Earnings (P/E) ratio measures a company's current share price relative to its per-share earnings. Investors calculate this metric by dividing the market value per share by the earnings per share (EPS). For example, if a stock trades at $100 and the company earned $5 per share over the last year, the P/E ratio is 20. A high P/E ratio may suggest that investors expect higher earnings growth in the future, or it could indicate that the stock is overvalued. Conversely, a low P/E ratio might signal that a stock is undervalued or that the company faces significant challenges. Analysts typically compare a company's P/E ratio against its historical average, its industry peers, or the broader market index to determine relative value. This ratio is a snapshot of market sentiment rather than a standalone indicator of performance. It does not account for debt levels, cash flow, or future growth projections. Trading involves substantial risk, and relying on a single metric can lead to poor financial decisions. Always combine P/E analysis with other fundamental data, such as debt-to-equity ratios and profit margins, before making investment choices.