i speculate that lot of money at stake before quad date, dumping is imminent after moneymen take a small loss or break even. scare out the longs and shorts. it is mostly a gamma game these days, unfortunately i am not an expert on that.
Depressing. This is the type of move I tend to maximize. Even had the limit in place. Played it too safe today.
If you get an early entry on a day like today and add as the market moves your way you can make a small fortune with very little risk. The «rules» of the market suggests this can continue higher still. Could get legs tomorrow.