Sector ETF weakness: Heating Oil– UHN -3.8%. Oil– USO -3.3%. Gasoline– UGA...Dec. 24, 2008 10:25 AM ETUSO, GDX, GSG, UGA, UHNBy: Rachael Granby, SA News Editor Sector ETF weakness: Heating Oil– UHN -3.8%. Oil– USO -3.3%. Gasoline– UGA -2.9%. Commodities– GSG -2.9%. Gold Miners– GDX -1.8%. Recommended For YouMore Trending NewsSee More »Trending AnalysisTrending News