The sensitive index of the Bombay Stock Exchange regained the 15,000 level in morning trade on Wednesday, after a gap of nine months, on increased capital inflow by funds after a positive infrastructure data for April fueled hopes of an economic recovery.
A firming trend in the global equity markets also supported the rally on the domestic bourses, triggering widespread buying.
The 30-share Sensex, which has surged 1,285 points in the last five sessions, gathered 168.30 points today at 15,043.21 -- its highest level since early September last year.
Similarly, the wide-based National Stock Exchange index Nifty rose 47.50 points to 4,572.75.
Market analysts said trading sentiment was largely bullish after six core infrastructure industries rebounded in April, a 4.3 per cent increase year-on-year, raising hopes of an economic recovery.
They said firming trends in the global markets, with Asian shares at eight-month highs on signs of global recovery, also buoyed on trading decisions in the domestic market.
The US Dow Jones Industrial Average had closed 0.22 per cent higher yesterday and Hong Kong's Hang Seng rose almost 2 per cent, while Japan's Nikkei gained 0.70 per cent in early trade today.
Major gainers which supported the Sensex were, Reliance Industries up 0.46 per cent to Rs 2,289.65, Reliance Infra by 1.25 per cent to Rs 1,259.95, RCom by 1.13 per cent to Rs 322.95, Infosys Technologies by 0.71 per cent to Rs 1,694.25 and Wipro by 1.43 per cent to Rs 396.95.
Further, ACC gained 3.51 per cent at Rs 812, Bharti Airtel by 0.62 per cent at RS 805, ICICI Bank by 1.03 per cent at Rs 740 and State Bank of India by 0.20 per cent at Rs 1,913.25.