The India-born former Citigroup (Fortune 500) executive wants MasterCard to be a leader in the mobile payments revolution. Earlier this year MasterCard unveiled PayPass Wallet Services, a system that lets customers make payments on their phones and online without entering their card information. Banga's other big bet: prepaid cards in emerging markets such as Mexico, South Africa, and Brazil. All told, it's no surprise that , MasterCard (Fortune 500) now generates 60% of its revenues outside the U.S. Investors are impressed: Since Banga took the helm two years ago, MasterCard's stock has more than doubled, outperforming archrival , Visa (Fortune 500). --Mina Kimes ,
He's a pro-customer, tightfisted risk-taker who is conditioning Wall Street to embrace his erratic earnings. If you're running a business with high margins - watch out.