Irish-American businessman and philanthropist Chuck Feeney, co-founder of Duty Free Shoppers Group, grabbed headlines in September when he announced he had achieved his mission of wanting to give away his US$8 billion fortune over a span of four decades. The 89-year-old businessman pioneered “Giving While Living”, an idea that “touches on donating wealth to charities instead of funding a foundation upon death”. By championing this initiative, he was dubbed by Forbes, the “James Bond of Philanthropy”. It’s not clear what that would make Amazon’s Jeff Bezos, the world’s richest man whose own philanthropy has been decidedly more modest. To mark Feeney’s accomplishment, we took a closer look at him and the other billionaires who followed suit and gave back huge sums to charitable causes. Which of these 11 self-made moguls became a billionaire fastest? Chuck Feeney Feeney might have succeeded in donating all of his wealth – but what makes him truly stand out from your typical billionaire with an altruistic streak is that he chose to keep all his donations secret. Atlantic Philanthropies, the foundation he established in 1982 and where he funnelled his wealth, has now run out of money. However, he revealed to Forbes he has set aside US$2 million for his and his wife’s retirement. Yu Pengnian The late Chinese real estate mogul gave all of his remaining US$500 million fortune to his foundation to aid in education, reconstruction after the 2008 Sichuan earthquake, and paying for operations for those afflicted with cataracts. “This will be my last donation,” he declared in an April 2010 press conference. “I have nothing more to give away.” Hong Kong’s 15 richest people ranked – on a scale of property to oyster sauce Kochouseph Chittilappilly In 2011, this Indian billionaire checked into a hospital to undergo four-hour surgery to remove one of his kidneys and donate it to an ailing truck driver. It became a turning point. Since that unorthodox act of giving, the 70-year-old magnate has handed his listed companies, V-Guard Industries and Wonderla Holidays over to his two sons so he can focus on philanthropic pursuits. According to Forbes , he established the K. Chittilappilly Foundation where he donates his annual earnings and dividends. Nandan Nilekani In 2017, Infosys founder Nandan Nilekani and his wife Rohini joined the Giving Pledge, a campaign that encourages the world’s wealthiest people to donate to various philanthropic causes. Both have pledged to donate 50 per cent of their wealth. According to Business Today , Nilekani has donated in the past, giving money to rebuild the hostel campus of IIT Bombay. He also built the Indian Institute for Human Settlements to solve urban challenges in India. Why are all these billionaires wearing watches that even you can afford? Warren Buffett Last July, the notoriously frugal billionaire investor donated US$2.9 billion worth of shares of Berkshire Hathaway – a conglomerate which owns stakes in Dairy Queen, American Airlines and Kraft Heinz – to five philanthropies including the Gates Foundation. With this hefty endowment, his philanthropic contribution is now more than US$37 billion since 2006. As co-founder of the Giving Pledge, he has vowed to give 99 per cent of his fortune to foundations. His net worth is estimated by Forbes to be US$81.7 billion, as of October 13. Want more stories like this? Sign up here . Follow STYLE on Facebook , Instagram , YouTube and Twitter .