Retail investors got richer by ₹4.5 lakh crore in a day after Sensex closed 560 points higher at 73,648 on Monday. The total market capitalisation of BSE-listed companies rose to nearly ₹398 lakh crore from ₹393.5 lakh crore in the previous session. The markets extended their rally for second straight session amid easing concerns over geopolitical tensions in West Asia.