U.S. corporate share buybacks have reached unprecedented levels in 2025, acting as a stabilizing factor during April's market sell-off. In April alone, companies announced $233.8 billion in buybacks, marking the second-highest monthly total since records began in 1984 and a sharp increase from $39.1 billion in March. Over the past three months, announced buybacks have totaled $518 billion, the largest rolling three-month sum on record. S&P 500 companies recently indicated plans to repurchase $192 billion of stock in the coming months, the highest weekly figure since data collection started in 1995. This surge positions 2025 on track to become the biggest year ever for S&P 500 buybacks, with the total expected to surpass $1 trillion for the first time in history.