EPS
Earnings Per Share. Net income divided by the weighted average number of shares outstanding, showing the profit attributable to each share
EPS (Earnings Per Share) is net income divided by the weighted average number of shares outstanding (excluding treasury shares). It directly tells shareholders how much profit each share earned. EPS forms the denominator of PER, serves as the yardstick for dividend policy, and measures management's earnings commitment. Diluted EPS further accounts for potential dilution from stock options, convertible bonds, and warrants; Japanese securities regulations require disclosure of both basic and diluted EPS.
Basic vs. Diluted EPS
Basic EPS is 'net income attributable to parent / weighted average shares outstanding (excluding treasury shares).' Diluted EPS adds to the denominator the potential shares from stock options, convertible bonds, and warrants assuming full exercise. For growth-stage companies and biotech firms with large outstanding warrants, the gap between basic and diluted EPS can be substantial and should not be ignored.
Drivers of EPS Change
EPS moves via its numerator (profit) and denominator (share count). On the profit side, revenue growth, cost reduction, and extraordinary items drive change. On the share-count side, buybacks reduce shares and lift EPS, while splits, equity issuance, and option exercises increase shares and dilute EPS. Distinguishing whether EPS growth stems from genuine profit expansion or financial engineering (buyback-driven) is critical for long-term investors.
Time-Series Analysis of EPS
Many investors focus not on the absolute EPS level but on its growth rate and stability over 5-10 years. Companies with steady EPS growth can justify higher PER multiples, while those with cyclically volatile EPS look expensive at cycle troughs when PER inflates mechanically. Some investors use cyclically adjusted EPS (smoothing over multiple years, similar to the Shiller CAPE methodology) to normalize these distortions.