Continuing its rising streak for the third straight session, the BSE benchmark Sensex today rose byover 106 points in early trade on sustained buying by funds and retail investors amid a firm trend in other Asian bourses.The 30-share index, which had gained 167.57 points in the past two sessions, rose further by 106.70 points, or 0.54 per cent, to 19,742.42 points.The wide-based Nifty of the National Stock Exchange moved up by 31.30 points, or 0.52 per cent, to 5,971.00, with all sectoral indices led by refinery, realty, and IT gaining up to 0.88 per cent.Asian shares edged higher today, boosted by rising global equities overnight on an improving global economic scenario.Among Asian markets, Hong Kong's Hang Seng rose by 0.30 per cent, while Japan's Nikkei by 0.77 per cent in early tradetoday.The US Dow Jones Industrial Average ended 0.39 per cent higher yesterday.