Earnings Per Share (EPS)

The basic EPS formula is: EPS = (Net Income − Preferred Dividends) ÷ Weighted Average Common Shares Outstanding. Preferred dividends are subtracted because EPS measures earnings available to common shareholders. Companies report two versions: basic EPS (using actual shares outstanding) and diluted EPS (which includes the effect of stock options, warrants, convertible bonds, and other securities that could be converted to common shares). Diluted EPS is always equal to or lower than basic EPS. Analysts closely track EPS estimates and actual reported EPS — when a company beats or misses EPS expectations, it often triggers significant stock price movements.

EPS is fundamental to stock valuation because it feeds directly into the price-to-earnings (P/E) ratio, one of the most important metrics investors use. A stock's P/E ratio is simply its price divided by its EPS. Growing EPS over time — especially at rates faster than revenue growth — demonstrates improving profitability and operational efficiency. Quarterly earnings reports, centered on EPS results versus expectations, are among the most significant events driving individual stock prices.