Gates, Bloomberg Dominate List of Most Promising 'Big Bets' in 2015

The , in partnership with , has released a top-ten list of the largest, most promising philanthropic commitments made in 2015 to address social issues in the United States and around the globe.

Ranked first on the list of philanthropic "big bets for social change" — defined as gifts of at least $25 million aimed at solving a single large-scale social problem — was the $1.55 billion over five years pledged by the to in support of efforts to deliver life-saving vaccines to children in the poorest countries. The foundation also tied for second with its $120 million commitment to to provide an additional 120 million women and girls with access to effective contraception by 2020. Tying Gates for second was Bloomberg Philanthropies' $30 million pledge to the in support of its campaign, which seeks to retire 50 percent of the nation's coal-fired power plants by 2017. Another Bloomberg gift, $42 million to to help a hundred midsize cities use data more effectively, was ranked sixth.

To compile its list, Bridgespan looked at fifty-eight pledges of $25 million or more for social change announced in 2015 and selected the thirty most promising, then asked ten outside experts to rank that group based on six measures — ambition, clarity of desired results, clarity of philanthropy's role in moving the needle, logical and realistic strategy, extent to which learning and improvement are built into the grant, and strength of the relationship between the donor and recipient organization. In addition, funders were limited to two rankings in the top ten; otherwise, Gates and Bloomberg would have secured additional spots on the list.

Rounding out the top ten were gifts totaling $50 million from Donald E. Graham and the to ; $40 million from David and Dana Dornsife to ; $75 million from the to the ; $50 million from the to the for UNCF's Career Pathways Initiative; $75 million from the to ; and $34 million from the to the .

"We have attempted to identify a subset of big bets that are truly exceptional when reviewed against [the six criteria]," said William Foster, a Bridgespan partner and lead researcher. "These investments are strengthening the bedrock of civil society."

"Forbes Magazine and The Bridgespan Group Launch List of “Philanthropy’s Big Bets for Social Change” ." Bridgespan Group Press Release 11/30/2016. Kerry A. Dolan. "." Forbes 11/03/2016.