Two Indian-origin men have figured in Forbes magazine's second annual list of wealthiest entrepreneurs under the age of 40 which is topped by Facebook founder Mark Zuckerberg. Vivek Ramaswamy, a successful biotech entrepreneur has been ranked 24th on 'America's Richest Entrepreneurs Under 40 2016' list with a networth of 600 million dollars and Apoorva Mehta stands at 31st spot with a 360 million dollars networth. These entrepreneurs also have to reside in the US and substantially have made their own fortunes in this country.