Buffett has sung Cook's praise in the past, too. In his 2021 letter to Berkshire shareholders, he wrote, "Tim Cook, Apple's brilliant CEO, quite properly regards users of Apple products as his first love, but all of his other constituencies benefit from Tim's managerial touch as well."

Warren Buffett and Berkshire Hathaway have produced market beating returns over the years. Here's a look at the top 10 holdings in the current stock portfolio.

Here's what to know about Greg Abel's business background and his investment strategy, and how it compares with Buffett's.