US markets end weakBS Reporter / Mumbai January 21, 2010, 8:05 ISTThe US markets have ended in the red.The Dow ended at 10603.15, weaker by 122 points or 1.1%, Nasdaq closed at 2291.25, lower by 29 points or 1.2% and S&P shut at 1138.04, down 12 ponts or 1%.