'The Sage of Omaha' is a nickname for Warren Buffett, an American entrepreneur, investor, and philanthropist. He is the chairman and CEO of Berkshire Hathaway, a multinational conglomerate holding company based in Omaha, Nebraska. Buffett is known for his exceptional investment skills and his long-term value investing strategy. He is also renowned for his generosity, having pledged to give away more than 99% of his fortune to philanthropic causes. Buffett is widely regarded as one of the most successful investors in history and has become an iconic figure in the business world.