The Nasdaq closed down 5.52% today, close to 6%. Historically, there have been approximately 14 instances of a single-day drop exceeding 6%, primarily concentrated in 1987, the 2000 dot-com bubble, the 2008 financial crisis, and the 2020 COVID-19 pandemic. 2026 AI Bubble? Subsequent performance varies: during crises, the market often continues to decline, while after a period of panic selling, a strong rebound is frequently observed.