The Sensex at the Bombay Stock Exchange surged 103 points in early trade today on sustained buying by funds and retailers, ahead of voting in Parliament on allowing FDI in multi-brand retail amid firm Asian cues. The 30-share barometer, which had gained 43 points on Tuesday, rose by 0.53 per cent, to 19,451.The Nifty at the National Stock Exchange index moved up by 28 points, or 0.48 per cent, to 5,918.In Asia, Hong Kong's Hang Seng rose by 1.21 per cent, while the Japan's Nikkei by 0.86 per cent in early trade today.