a lot of recent trading, including a 45 million share trading day by big boy(s) who apparently had to use a market order to get their fill and thus sent the pps to 52c or so that day,with the usual general retrenching since played by the mutant groups who often control the flow of the pps,absent controlling news.
but recent macros pertaining to oil co's have also been involved,with other oil co's like llex shooting to the stars recently only to recline after the threat of oil shortages mistakenly associated with an iran war declined in the usual knee jerk overreaction stock market (the most predictable thing about the lemming market).