The BSE Sensex and Nifty50 indices snapped their three-day gaining streak on Wednesday by losing 757 and 198 points, respectively. BSE Sensex closed at 78,516.49, and Nifty 50 at 24,378.10. The fall is due to a massive sell-off in the IT sector, with HCL Tech, Infosys, TCS, and Tech Mahindra among the top losers. Nifty IT plunged by nearly 4%.