The Bombay Stock Exchange benchmark Sensex gained 425.83 points to cross the 15,000 levels in early trade on Wednesday on heavy buying by funds, tracking firm global trend.
The BSE-30 share index, which moved up by 383.20 points on Tuesday, added another 425.83 points to 15,386.90 as funds turned net buyers in blue-chip stocks. The Sensex had earlier witnessed the 15,000 levels on July 24.
Similarly, the wide-based National Stock Exchange's Nifty gained 111.40 points at 4,614.25 as most of the index related stocks quoted higher.
Marketmen said buying activity picked up as US and other Asian markets rose smartly.
They said the investor-regained confidence owing to easing crude oil prices.