Infosys co-founder Nandan Nilekani and wife Rohini will donate 50 percent of their wealth under Giving Pledge- a movement initiated by Microsoft founder Bill Gates and Melinda Gates. With this, the Nilekanis have joined the list of other Indian billionaires like Wipro Chairman Azim Premji, Biocon Chairman Kiran Mazumdar Shaw, and Sobha Ltd Chairman PNC Menon who have also committed half of their wealth to philanthropy..