Investors woke up to a Black Friday as equity indices crashed by nearly 10 per cent with coronavirus panic selling globally hitting almost every asset class. Sensex reopens after 45 minutes halt due to lower circuit; plunges 3518.49 points, at 29206.20 currently. All sectoral indices at the National Stock Exchange were floating in red with Nifty IT down by 13.15 per cent, PSU bank by 12.96 per cent, metal by 11.83 per cent and auto by 11.38 per cent. Among stocks, Kotak Mahindra Bank was the top loser after dropping by over 20 per cent at Rs 1,172.05 per share. Bharat Petroleum Corporation slipped by 16.7 per cent, GAIL by 15.3 per cent and ONGC by 14 per cent.