Warren Buffett just poured another $7.6 billion into his all-time favorite business — here are 3 other companies doing something very similar

When Warren Buffett’s holding company Berkshire Hathaway spends billions of dollars on an investment, it usually makes headlines.

But there wasn’t too much hype surrounding Berkshire’s $7.6 billion purchase in Q3 — and for a good reason: The company was buying back its own shares.

Buybacks are a common way for companies to return capital to…