You can see from intraday chart there were no volume before 12:30 then multiple large orders in a minute overwhelmed bids , pushing price down $6. Stock spends the rest of day climbing $2 on heavy volume.
This is how MM or hedge fund manipulate the market. Force the price down with maybe 200,000 shares in minutes. Creating mass panic so he can buy millions of shares cheap.. How else could hedge fund buy millions of shares without driving price up 30%. He bought maybe 2 million shares in the afternoon judging by the up volume.
I think the selling is over. Having bought 2 million shares he is not going to push price down next week to create a paper loss for himself. End of month window dressing is coming up. He wants to look pretty.