Sensex and Nifty ended the Monday session in red as both indices dipped 1.08% and 1.14%, respectively. Sensex lost over 800 points to close at 75,366.17, while Nifty lost 263 points to end at 22,829.15. HCLTech, Zomato, Tech Mahindra, PowerGrid and Infosys were the top losers on Sensex. Meanwhile, ICICI Bank and Hindustan Unilever were among the top gainers.