Snapping four straight sessions of sharp losses, Indian stocks again gained some momentum in early trade on Tuesday, possibly due to value buying. At 9.32 am, Sensex traded at 57,628.49 points, up 483.27 points or 0.85 per cent, whereas Nifty traded at 17,171.30 points, up 155.00 points or 0.91 per cent. Meanwhile, 45 of the Nifty 50 companies traded in the green this morning, National Stock Exchange data showed. The ...