How buybacks offset dilution

A share repurchase is a company buying its own shares back from the market. People call it a buyback. The shares bought are cancelled or held by the company, and either way they stop counting as shares outstanding.

Two forces move the share count in opposite directions at almost every large employer.

Equity compensation issues shares. Every vesting event adds to the count.

Buybacks remove them. Cash goes out and shares come in.

The net of those two is what shareholders actually experience. A company can pay billions in stock and still shrink its share count, if it spends enough cash buying shares back.

Apple for the year that ended September 30 2023.

Read the last two rows together. The average count across the year was 15,744,231 thousand. Shortly after year end the count was 15,552,752 thousand. The later figure is lower than the year's average by about 191 million shares.

That's the net effect. Shares were issued to employees all year and the count still fell, because $77,550 million of repurchases overwhelmed them.

Compare the two cash-relevant figures. $77,550 million of buybacks against $10,833 million of share-based compensation expense is roughly seven times as much. Apple is not simply neutralising employee issuance. It is shrinking the company's share count as a deliberate policy, and the equity compensation is a small part of what it is absorbing.

One caution on language. No company discloses a line called shares repurchased to offset dilution. That framing is an analyst's construction. What is disclosed is the repurchase spend and the share counts, and you can put them side by side yourself.

The trap is reading a buyback as proof that equity compensation is free.

It isn't. The company spent $77,550 million of real cash to keep the share count down. Shareholders paid for the equity compensation in cash rather than in dilution. The bill changed form. It did not disappear.

The second trap is assuming buybacks always work this way. They are discretionary. A company can stop, and companies do stop when cash gets tight, which is exactly when the share price is usually low and the issuance continues anyway. Dilution that was invisible for years can appear quickly.

The third trap is judging a buyback by its dollar size. What matters is the share count before and after. A large spend at a high price retires fewer shares than a smaller spend at a low one.