Warren Buffett's Berkshire Hathaway has sold nearly all of its holdings in Wells Fargo, a more than 31-year-old investment. Berkshire said it owned $26.4 million of shares in the fourth-largest US bank as of March-end, as against $32 billion in 2018. Berkshire first invested in the bank in 1989 and spent $12.7 billion on its shares, building a 10% stake.