The Bombay Stock Exchange benchmark Sensex soared by over 129 points at 20,234 level in the opening trade today. Later it shed its initial gains and was trading at 20112, up by over 7 points. Similarly, the broad-based National Stock Exchange index Nifty also rose by 42 points to 6071.Trade analysts said the markets are vibrant on fresh buying by funds amid firm global.The Hong Kong's Hang Seng index was up by 1.02 per cent, while Japanese Nikkei gained 0.38 per cent in the morning trade. The US Dow Jones Industrial Average ended 0.43 per cent higher in Tuesday's trade.