Investors’ wealth climbed Rs2.27 lakh crore on Wednesday as the benchmark Sensex closed above the 75,000 mark for the first time. The market capitalisation (mcap) of BSE-listed firms climbed Rs2,27,024.52 crore to reach its all-time high of Rs4,02,19,353.07 crore ($4.83 trillion). The market valuation of BSE-listed companies has gone past the coveted Rs400 lakh crore mark for the first time on Monday.