A share buyback (also called a share repurchase) is when a company uses its own cash to buy back its shares from investors, usually on the stock market. The shares it buys are either cancelled or held by the company, so fewer shares remain in the hands of outside investors. Each remaining share then represents a slightly bigger slice of the same business. A buyback is one of two main ways a company can hand cash to its owners; the other is a dividend. Because the number of shares falls, earnings per share (EPS) usually rises even if total profit does not change, and return on equity (ROE) usually rises too, because the equity base gets smaller.
Worked example
Company A earns $12 million a year and has 12 million shares, so EPS = $12 million ÷ 12 million = $1.00. Its equity is $120 million, so ROE = $12 million ÷ $120 million = 10%. The company spends $20 million to buy back 2 million shares at $10 each. Shares drop to 10 million, and equity drops to $100 million. If profit stays at $12 million, EPS = $12 million ÷ 10 million = $1.20 and ROE = $12 million ÷ $100 million = 12%. Both figures rose, yet the business did not earn a dollar more. In real life the cash spent might have been earning interest, so profit could fall a little, and the buyback price matters too.
Why it matters
Buybacks matter because they change the per-share numbers that many ratios rely on, without any change in the business itself. A higher EPS after a buyback can come from fewer shares rather than from better earnings, so it helps to ask which of the two happened. A buyback also differs from a dividend: a dividend is paid in cash to every holder, while a buyback rewards the holders who stay by giving each a bigger share of the company, and the tax treatment of the two differs by country, so check the rules where you live. The price paid matters as well: buying back shares at a high price uses more cash for the same effect. Whether a company's buybacks are a sensible use of its cash is a question to look into, using its cash flow and debt, not a conclusion on its own.
Frequently asked questions
It is when a company uses its own cash to buy its shares back from investors. Fewer shares are left, so each remaining share represents a bigger slice of the same business.
A dividend pays cash to every shareholder. A buyback instead reduces the number of shares, so holders who stay own a larger share of the company. The tax treatment of the two differs by country, so check the rules where you live.
Usually yes, because the same profit is divided by fewer shares. That rise comes from the smaller share count, not from the business earning more, so it is worth checking whether profit itself also grew.
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