In a turnaround on Friday, the Sensex snapped its three-day losing streak, propelled by a 'buy on dips' approach and positive global cues. Earlier in the week, Indian benchmark indices fell sharply, primarily influenced by HDFC Bank's lack lustre quarterly results. On Wednesday, Sensex plummeted 1,628 points, while NSE Nifty plunged 460 points or 2.09% to close at 21,572. This was the the most significant percentage drop in the last 18 months.