Usually, eh? I assume you have bought your put options?

This can be true, but remember that you don't know where the sell orders are placed. We could have already seen the trigger and the corrpesponding drop-off.

Also, remember that many investors believe this, so they put buy triggers below where they think sell triggers are. Also, there are value investors who place buy triggers without regard to the existence of sell triggers.

I'm not saying that the phenomenon you describe does not exist here, and I acknowledge it has happened in the past. But you need to qualify axioms like that to see if they apply to new situations.

Full disclosure: I made a small-but-quick profit on the Nikkei today.