Sameer Gehlaut

IIT engineer's mortgage lender, Indiabulls Housing Finance, raised $2.3 billion through bond issues since July to fund expansion. It owns a 40% stake in U.K.-based OakNorth Bank, a lender to small businesses. In February he hosted the 15- year celebration of his group at the site of his upcoming $1.5 billion residential development in Mumbai. Gehlaut is building a luxury hotel in London's Mayfair area. He recently bought a Global 5000 airplane.