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."

Buffett holds steady with Apple, now 26% of Berkshire's portfolio, while trimming Bank of America, signaling cautious views on banking stocks. See more on BRK.A here.