LearnStocksBuybacks
Stocks · Lesson 07 of 12

Buybacks

5 min read  ·  Intermediate

In 2023, S&P 500 companies collectively spent over $800 billion buying back their own shares. That's more than the GDP of most countries — returning cash to shareholders not as dividends, but as repurchases. Buybacks are one of the most significant but least understood forces in modern stock markets.

What is a buyback?

A share buyback is when a company uses its own cash to buy shares of itself on the open market — then cancels them. Fewer shares outstanding means each remaining share represents a larger slice of the company.

How a buyback lifts EPS
Company profit£100m
Shares before buyback100m shares
EPS before£1.00
Shares after buying back 10m90m shares
EPS after£1.11

Profit didn't change. But EPS rose 11% just from having fewer shares in circulation.

Why buybacks instead of dividends?

The criticism

Buybacks are genuinely controversial. Critics argue companies use them to inflate EPS and therefore executive bonuses (often tied to EPS targets) rather than investing in the business or hiring workers. During the pandemic, several US airlines that had spent billions on buybacks then required government bailouts — having no cash cushion left.

There's also the timing problem: buybacks are often done when share prices are high. Many companies bought aggressively in 2021 at peak valuations, sitting on large losses when markets corrected in 2022.

The honest verdict: a buyback by a genuinely undervalued company with excess cash and good discipline is shareholder-friendly and value-creating. A buyback by a heavily indebted company at peak valuations to hit EPS targets is value-destroying. Same mechanism, two very different outcomes depending on context and management quality.

The Apple case study

Apple is the gold standard. Since 2012, Apple has bought back over $600 billion of its own stock — reducing shares outstanding by roughly 40%. Combined with earnings growth, this has compounded into extraordinary long-term EPS growth even in years when revenue growth was modest. When you see Apple's EPS rising faster than its revenues, buybacks are a big part of the explanation.

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