One starting point could be this recent report by Bridgespan: this is the forbes article about it… I found this interesting - all donations over 25 million in 2015 that are categorized as big bets: http://www.forbes.com/sites/kerryadolan/2016/11/30/big-bet-philanthropy-solving-social-problems/#61e76fd03999
And here is an older list with grants from 2000-2014
https://www.bridgespan.org/bridgespan/images/articles/making-big-bets-for-social-change/Making-Big-Bets-for-Social-Change-Pdf.pdf?ext=.pdf
one could analyse how those turned out.
One starting point could be this recent report by Bridgespan: this is the forbes article about it… I found this interesting - all donations over 25 million in 2015 that are categorized as big bets: http://www.forbes.com/sites/kerryadolan/2016/11/30/big-bet-philanthropy-solving-social-problems/#61e76fd03999
And here is an older list with grants from 2000-2014
https://www.bridgespan.org/bridgespan/images/articles/making-big-bets-for-social-change/Making-Big-Bets-for-Social-Change-Pdf.pdf?ext=.pdf
one could analyse how those turned out.