3 of Warren Buffett's Biggest Billion-Dollar Blunders By: Motley Fool April 14, 2021 at 05:51 AM EDT One mistake has cost the Oracle of Omaha at least $31 billion in potential gains. Read More >> Related Stocks: American Airlines Gp Berkshire Hathaway Berkshire Hathaway Delta Air Lines Home Depot Lowe's Companies Southwest Airlines United Airlines Holdings Inc Walt Disney