The founders of the Indian e-commerce giant Flipkart, Sachin Bansal and Binny Bansal, have become almost billionaires, after the company's valuation reached $11 billion. Their individual stakes are at $940 million each, revealed the data released for the 1st time. Both the 33-year-old co-founders can soon add to the number of billionaires in India, which currently stands at 100.