The market capitalisation of BSE-listed firms hit a record high of Rs 447.30 lakh crore on Thursday with the benchmark Sensex closing at a fresh all-time high level. The 30-share BSE Sensex scaled an intraday record high of 80,392.64 in early trade. The index pared most of the gains later due to volatility and profit-taking by investors and settled 62.87 points or 0.08 per cent higher at 80,049.67.