Quote from JSSPMK:
Just to add, yesterday there were signs of a bounce, we never know what sort of bounce, yet there were technical indications that buyers were accumulating, if you understand how to read accumulation, then you would have at least closed part of your position. I wasn't short at that time so it was easier psychologically for me to go Long, I didn't know it would shoot up the way it did obviously, all I knew where my stop was and what sort of gain to expect based on research. Do not discount the power of intraday mean reversion in equity index futures.