Definition:Share buyback
| Share buyback | |
|---|---|
| Abbreviation | SBB |
| Category | concepts |
| Aliases | share buybacks; buyback; buybacks; share repurchase; share repurchases |
| Related terms | Dividend, Earnings dilution, Underlying earnings per share, Capital management |
| Definition | A company repurchasing its own shares, returning capital and shrinking the share count. |
🔄 Share buyback is a company using its own cash to repurchase its own shares, which it then cancels or holds in treasury. Also written share repurchase, and abbreviated SBB in European results commentary, the buyback is the second great channel of shareholder return beside the dividend. The mechanism is arithmetic: cash leaves the company, the share count shrinks, and the same future earnings divide over fewer shares, so earnings per share rise even when total earnings stand still.
🛠️ Execution takes a handful of standard forms: open-market programs announced with a size and a period, accelerated repurchases contracted with a bank, tender offers at a fixed price. Regulators shape the practice. EU and UK safe-harbor rules confine daily volumes and prices, the US adds its own disclosure requirements, and an insurance group must clear any buyback against its solvency position, since the ratio falls as capital leaves. Insurers have made one use of the buyback almost a reflex: when a disposal dilutes earnings per share, the group announces a buyback sized to neutralize the dilution, as AXA did when it sold AXA Investment Managers.
🧮 A buyback creates value only at the right price. Repurchasing shares below intrinsic value transfers wealth to the shareholders who stay; repurchasing above it transfers wealth to the ones who leave. That conditionality feeds the standing critique: boards buy most eagerly when cash is plentiful and prices are high. Flexibility is the offsetting virtue. A company can pause a buyback without the penalty a dividend cut carries, which is why boards route windfalls and disposal proceeds through buybacks and reserve the dividend for earnings they expect to repeat.