Date Short Volume Total Volume Short Percent 07-23-2018 6,973,049 22,698,873 30.72% (covers = 22.7M x (1 - 0.3072) = 15.7M) 07-20-2018 8,657,047 26,124,034 33.14% (covers = 26M x (1 - 0.3314) = 17.4M)
I think a large number of short covers yesterday were those who went short on last Friday - immediately went into the red after JPM upgraded PT to $15 yesterday.