OK, indeed a tradable bottom within 2 to 4 days when NYDNV:NYUPV > 35. Now the question is: Is rebound over? Again let’s look at the history to see how large each rebound went. The bottom line, the short-term trend is up, but I closed both my short position originated on 08/11 (and added on 08/16) and long position bought today in the morning on 30 min open range breakout.