Bad start: How much money have Indian billionaires lost in the first month of the new year?

Market benchmark Sensex has cracked below the 24,000-mark after over 20 months, bogged down by persistent selling in Asian shares and unprecedented fall in crude oil prices. The selling has been persisent since the beginning of the year, and investors have lost a lot of money even in large-cap shares. For example, on January 19 , 2015, alone investors’ wealth in all listed companies on BSE was wiped off by Rs. 1.84 trillion. Business Standard takes a looks at how much money have Indian billionaires lost in the first month of the new year?