The Bombay Stock Exchange benchmark Sensex shot up by 153 points in early trade after a rally in metal, realty and IT stocks on hopes of strong quarter corporate earnings and firming global trend. The 30-share index, which had gained over 362 points in the previous two sessions, gained another 153.29 points, or 0.86 per cent, at 17,986 points. The broad-based National Stock Exchange index Niftygained 40.65 points, or 0.75 per cent, to 5,393. Hong Kong's Hang Seng Index was up 0.76 per cent, while Japanese Nikkei gained 0.35 per cent in morning trade.