As soon as the trend still questionable (for the most of participants) banks will play thier favorite game - taking profit from margin calls and shorters sequently.

This week they took profit from margin callers and on trend change they will take a lot from short positions closing. These are "easy money" for them.

Only people strong enough to keep stock in freefall and withstand the temptation to sell at small profit will join these guys big time event.