Warren Buffett's Berkshire Hathaway Sheds Citi Stake, Trims Other Big Bank Holdings
1. Berkshire reduced its Citigroup shares by 14.6 million in Q1. 2. Buffett trimmed stakes in Bank of America and Capital One. 3. Berkshire doubled its investment in Constellation Brands, driving its share price up. 4. Shares of BRK-A rose 12% this year, outperforming the S&P 500. 5. Buffett's impending CEO transition causes short-term stock volatility concerns.