Through the first nine months of 2024, Warren Buffett's Berkshire Hathaway unloaded $133 billion worth of stocks. Buffett reduced Berkshire's massive stake in Apple and sold nearly a quarter of its Bank of America holding.

With Berkshire Hathaway delivering an average annual return of around 19.8% over almost six decades, Buffett clearly knows what he's doing. Unsurprisingly, he hasn't diversified Berkshire's holdings as much as most investors would.