You might see more covering toward the end of day going into the weekend. Brokers may force some shorts to cover Monday, and they buy at market when they do. Oh the pain of being on the wrong side of the coin. It must hurt. Not sure why they think that's a good strategy though.
Why would any broker require a short to cover?? Even if they shorted at the very bottom, they are at most a couple bucks down, and they can cover whenever they want. In truth the overwhelming majority of the shorts in this are ahead, and they can cover whenever they want