The Indian stock market closed in the green on Thursday, driven by positive global cues. Sensex rose 320.70 points to 81,633.02, while Nifty gained 81.15 points to 24,833.60. Buying was strong across segments, with Nifty Midcap 100 up 315.85 points and Smallcap 100 up 105.40 points, indicating broad market strength across largecap, midcap, and smallcap stocks.