... experiencing some of its toughest days since 1987. Futures have dropped nearly 5%, nearing trigger levels for stop trades. What is behind this decline, which levels are critical, and how should investors respond? We analyze it in the article. S&P 500 and Circuit Breaker Levels 2025: The Worst Three Days Since 1987 April 2025 marked a turning point for the American stock market. The S&P 500 index faced a sharp decline, triggering the circuit breaker mechanism. The last three trading sessions were characterized ...