Ranking second was Ralph Wilson, late owner of the Buffalo Bills football team, who made a bequest of $1 billion to the Ralph C. Wilson Foundation in Detroit, which will aid charities in New York and Michigan.
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Ranking third was Ted Stanley, founder of collectible company MBI, with a gift of $652.4 million to the Broad Institute and other groups to fund mental-health research.
The report also showed a surge in giving by new tech titans. There were 12 tech donors on the list, twice the number in 2012 and more than the 11 donors from finance.
Among the top tech givers were Jan Koum, the WhatsApp founder who gave $556 million to the Silicon Valley Community Foundation. Facebook billionaire Sean Parker gave $550 million to his own foundation and the Donor Advised Fund at Fidelity.
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GoPro founder Nick Woodman and his wife, Jill, gave $500 million to the Silicon Valley Community Foundation, while Google guys Sergey Brin and Larry Page gave $382.8 million and $177.3 million, respectively, to different foundations.
Here are the top 10 givers for 2014.