Sensex and Nifty lost about 0.25 per cent, as Indian equities experienced a volatile week, with early optimism giving way to a sharp bout of risk aversion due to geopolitical tensions

IT, bank and real estate stocks helped Sensex and Nifty to gain 827.57 points and 244.10 points, respectively. Sensex closed at 77,569.39 and Nifty settled at 24,206.90