Yes Bank's Co-founder and CEO Rana Kapoor has become a billionaire as the bank's shares jumped 16.4% this month, making it the best-performing stock among Indian banks. Kapoor, who owns 11.6% stake in the bank, is only the second billionaire to emerge from India’s banking industry, after Kotak Mahindra Bank's Uday Kotak, who has a net worth of $7.2 billion.