Earnings per share (EPS): share count and dilution explained
Earnings per share divides earnings attributable to ordinary shareholders by a relevant share count. The denominator can change. That means growing company profit does not always produce growing profit per share.
More profit, lower EPS
Suppose an invented company earns $100 million with 100 million weighted-average shares. EPS is $1. Next year, earnings reach $110 million but the share count rises to 125 million. EPS becomes $0.88. Total earnings rose 10%, while earnings per share fell 12%.
Reverse the example. If earnings remain $100 million and the share count falls to 90 million, EPS rises to about $1.11. The business did not produce more total profit in this simplified calculation.
Read basic and diluted figures
Basic EPS uses the relevant weighted-average outstanding shares. Diluted EPS also considers potentially dilutive instruments under the applicable accounting rules. A year-end share count is not automatically the denominator used throughout the year.
Keep the earnings figure and share-count note in your analysis. Verify whether new shares came from employee compensation, an acquisition or financing. The source changes the questions you need to ask.
A buyback can reduce shares, but examine its funding and price. Spending cash on repurchases has an opportunity cost; borrowing to fund them changes the balance sheet.
When a presentation highlights adjusted EPS, find the reconciliation to the reported number and inspect excluded items. Compare like with like across periods. An attractive percentage based on a changed definition is not yet an explanation of better economics.
| Period | Earnings | Average shares | EPS |
|---|---|---|---|
| First | $100m | 100m | $1.00 |
| Second | $110m | 125m | $0.88 |