Investing term
What is Share buyback?
A company buying its own shares back on the secondary market.
A share buyback is when a company uses its cash to repurchase its own shares on the market, shrinking the share count. With fewer shares outstanding, each remaining one represents a bigger slice of the company and its earnings, which can lift earnings per share even if total profit is flat — a way of returning cash to shareholders alongside, or instead of, dividends.
The catch is that buybacks only create real value when the shares are bought at a sensible price. A company repurchasing its stock when it's cheap concentrates value for remaining holders; one buying back overvalued shares, or borrowing to do so, can destroy it — sometimes while conveniently flattering per-share metrics that executive pay is tied to. Buybacks are neither inherently good nor bad; the price paid and the motive behind them decide which.
Buying back 10% of shares lifts earnings per share about 11% — the same profit split fewer ways. It rewards holders like a dividend, but only creates value when shares are bought cheaply.
For example
A company buys back 10% of its shares; earnings per share rise about 11% even with flat profit, because the same earnings are split across fewer shares.
Learn it by doing
That's Share buyback in theory — it clicks when you use it. Practise it hands-on in a free, interactive lesson (Stage 8, Corporate Actions: What Lands in Your Account).
Try the free lesson →Why it matters to you
Buybacks matter because they're a major way companies return cash — often larger than dividends — and because their effect on per-share value can be quietly significant or quietly harmful. Recognising that a buyback only benefits you if the shares are bought cheaply, not at any price, helps you tell value-creating repurchases from ones that merely flatter earnings per share. It also explains why rising EPS doesn't always mean a better business — sometimes it's just fewer shares.
⚠ Cheering a buyback at any price
A buyback lifts earnings per share and is often celebrated, but it only creates value if the shares are repurchased below their worth. A company buying back overvalued stock — or borrowing to do so — can destroy value while flattering per-share metrics. Rising EPS from a buyback isn't automatically good; the price paid for the shares is what matters.