Investment titan Warren Buffett has significantly altered his portfolio by divesting his holdings in crypto-friendly fintech firm Nubank and selling a portion of his stake in Citigroup. This strategic move resulted in a profit of over $250 million for Berkshire Hathaway, the company he heads. 2024 saw Berkshire reduce its stake in Nu Holdings (the parent company of Nubank) by shedding its last remaining shares during Q1. The sale follows impressive earnings for Nubank, reporting a significant increase in net income during Q1 2025. This decision reflects Buffett’s preference for traditional businesses rather than speculative ventures, and it signifies a major shift in his investment strategy.