Very simple indeed. Majority of EPGL supply is in long term hands, keeping the pps in the .02-.04 range. Won't break the range due to lack of additional demand until an event creates it. But in times when demand increases, it's that lack of supply drives it up quick and big.
Short term traders, that are good & patient, are playing the range. Long termers are buying when it cycles down to the bottom of the range. Short term traders that played it wrong, but are at least smart, move on to another play & take the loss, the moment they see demand declining.
Then you have everybody else.
