Petrobank Energy and Resources Ltd.'s (TSX:PBG) fourth-quarter profit leaped ahead to $40.1 million from a year-earlier $2.6 million on higher oil and natural gas revenue rises. But its shares were down $4.38 to $49.06 as market watchers speculated that investors may have been disappointed the company did not outline any new progress on its patented THAI oilsands technology.