I think we're just seeing a bit of churning on weak energy sector (oil prices falling down again today) and also according to technical chart patterns.
On T.A. (technical analysis), since the Parabolic-SAR indicator flipped from buy to sell four days ago. PEIX then today finally fell well below its 20 dma after testing it for a few days (presently it sits at 14.03) and the stock now looks to be testing support at the 50 dma, presently at 13.32. After hitting a low of 13.33, the stock closed at 13.37, just a nickel above the 50 dma.
The low $13s and a fast rising lower Bollinger band at 12.91 should offer good support for a rebound move back up, imo. I could be wrong, but unless oil price falls another few bucks, i don't think PEIX is returning to low $12s or lower..... As our PEIX experts here have shown, crush spreads and future prospects look too good for PEIX.