Whatever his reasons are and whatever is or not behind this stock, someone definitely doesn't want the PPS to go up: 0.15 1000 OBB 09:56:02 ($150) 0.20 900 OBB 09:32:25 0.15 700 OBB 09:30:29 ($105$) 0.20 7000 OBB 09:30:22 0.20 100 OBB 09:30:09 0.20 1100 OBB 09:30:02 I suspect very small trader to fool around with this for negligeable profits.