@davidgerard "It was the worst trading day in five years": I wish, but they reduced losses by closing time (S&P closed at minus 100 points vs. 200 earlier in the day).
If we talk about biggest point losses, both the S&P 500 and Nasdaq had worse days on 2024-07-24, 2024-12-18; also several days of 2022 for S&P 500.