Changed the dealer?

On the morning of $ACT , I received a notification about the crash, but I didn't buy at the bottom because I took some time, though it was only a two-point difference. I bought spot. This crash was due to a change in the main trading force and clearing out positions. If you don't believe it, I can't explain it. After all, some people always think certain news is fake. I'll start buying long after it stabilizes for a few days.