Indian markets rallied Monday on GST reform hopes, with Nifty closing at 24,876, just shy of 25,000. Autos and consumer stocks surged, led by Maruti, Ashok Leyland, Voltas, and IFB hitting upper circuit, while IT and select pharmaceuticals lagged. Steel gained on safeguard duty news. Retail sentiment stayed 'neutral' on Stocktwits as investors await global cues and GST clarity.