Investors' wealth has increased by over ₹6.09 lakh crore in four days of market rally, with market capitalisation of BSE-listed companies surging to ₹268 lakh crore. Sensex rose by 148 points to close at record 60,284, while Nifty 50 index gained 46 points to close at 17,992 for the first time. Titan and Bajaj Auto were among top Sensex gainers.