Set your weekly DCA for Friday at 4:00.  Banks will short the futures into the expiration and sell bitcoin into the market.  Futures expire in the money.  They buy back their spot #Bitcoin.  

Hammering the close.
There are no trading regulations on spot #BTC, this will be totally legal for them. nostr:note1qrs3pkc277d0v7p4xzuregn9akj34rzwkc3uyjn5qskl5aevkmas2tm6ys