thats the funny part about MM's covering their short sells....
it is not like how retail shorts cover. they don't pay commission to anyone. they are the market... and they also make the market.
so when they buy or sell, it can be based on the volume and how the retail buyers and sellers line up... so if we had big buyers coming in, it would affect the pricing also as well.
obvious when MM's manipulate the market blatantly... but they also do it as the market dictates. volume is the key.