Tourmaline Oil (TOU.TO) spent most of this year in the green zone of the SIA S&P/TSX 60 Index Report, but its relative strength started to erode in early November. Over the last month, TOU.TO has dropped 34 spots in the relative strength rankings to 46th place, falling out of the green zone and deep into the Red Unfavored Zone. Since leaving the green zone, TOU.TO has lost 12.5% of its previous value.