Sounds scary until you realize that this happens about once per year on average. If this happens again tomorrow and a few more times in the few couple weeks that would be bad, but as of now it's notable but not a huge deal.
The question one should ask is how far down does it go and if history is any indicator it's not gonna be up from here before the new year (and likely down a bunch more). There is a LOT of over valued stocks still to be cleared out - I suspect the cut is gonna be a lot deeper. The history on this is 2018 for Trumps last midterm and a pending rate hike. Sticky oil prices are gonna drive inflation and the fed raise's the market suffers.
Gigantic amount of debt is contingent on datacenter buildouts and roi on it. All of that suddenly got repriced. This is a catalyst for a multi-year grind-down of the ai-trade. See 2000-2002 for a parallel.