The 30-share index, which had gained over 128 points in the previous four sessions, gathered another 142.51 points, or 0.54 per cent, to 26,585.32.
All the sectoral indices, led by consumer durables, realty and PSU, were trading in positive zone, rising up to 1.40 per cent.
The NSE Nifty also shot up by 39.80 points, or 0.50 per cent, to 7,944.55.
Brokers said besides sustained foreign capital inflows and increased buying by retail investors, covering up of short positions by speculators ahead of tomorrow’s monthly expiry in the derivatives segment bolstered trading sentiment.
Besides, a firming trend on other Asian markets following another record close on Wall Street fuelled by positive data on the US economy triggered buying activity, they said.
In the Asian region, Japan’s Nikkei rose 0.23 per cent, while Hong Kong’s Hang Seng gained 0.25 per cent in early trade on Wednesday.
The US Dow Jones Industrial Average closed 0.17 per cent higher in Tuesday’s trade.