These are the world's top 10 most philanthropic billionaires, according to Comparethemarket.com’s latest study.
Among the 90 Indians on the Forbes Rich List 2015, published on Monday, Ambani (39th globally) is closely followed by pharmaceuticals business tycoon Dilip Shanghvi (44th rank with networth of USD 20 billion) and Azim Premji (48th with USD 19.1 billion).
Microsoft co-founder Bill Gates has regained the title of the world's richest man in the Forbes magazine's annual billionaire list that includes 56 India based billionaires led by RIL Chairman Mukesh Ambani.
With a net worth of USD 76 billion, the Microsoft Corp co-founder reclaimed the top spot after a four-year hiatus, toppling Mexico's telecommunications mogul Carlos Slim Helu, who placed second at USD 72 billion, Forbes said in announcing the list on Monday.
According China-based research firm Hurun's 2014 global rich list, Mukesh Ambani was ranked 41st in the list that was topped by Bill Gates, whose personal networth stood at a whopping USD 68 billion
Forbes Magazine has revealed its precious list of top billionaires for 2011. According to the list, NRI steel tycoon Lakshmi Mittal and Indian industrialist Mukesh Ambani, chairman and managing director of Reliance Industries are amongst the richest top 10.