If one had performed price action analysis, one would have locked in IWM profit at the open rather than let it disappear.
This is what I showed to my friends before yesterday's open.
This spreadsheet includes all prior cases (within my pricing database) of SPY gapping down 1%, then gapping up 1%, and then gapping down 0.5% and then what happens to IWM the next day. The result? As the highlighted cells (in red) showed clearly, the vast majority of such days have very negative maximum drawdowns - meaning any gap-ups are very likely going to disappear. Armed with that piece of information, one ought to have locked in profit on a such a huge gap-up yesterday.