Overlap between giving pledge list and recent Philanthropy 50 top donors lists.

Other Organizations

Org People
Breakthrough Energy Coalition Bill Gates, Michael Bloomberg, David Rubenstein, John Arnold, Julian Robertson Jr, Tom Steyer, Mark Zuckerberg
Augusta National Golf Club Bill Gates, Warren Buffett, T Boone Pickens, Sanford Weill
Bill & Melinda Gates Foundation Bill Gates, Melinda French Gates, Warren Buffett
Microsoft Corporation Bill Gates, Paul G Allen, Melinda French Gates
Partnership for a New American Economy Pierre M Omidyar, Michael Bloomberg, Mark Zuckerberg
Carnegie Hall Michael Bloomberg, Ronald Perelman, Sanford Weill
Clinton Global Initiative Bill Gates, Warren Buffett, Michael Bloomberg
Bloomberg New Economy Forum Bill Gates, Michael Bloomberg, David Rubenstein
Trilateral Commission Michael Bloomberg, David Rockefeller Sr, David Rubenstein
Alfalfa Club Warren Buffett, Michael Bloomberg, David Rockefeller Sr
Rockefeller University David Rockefeller Sr, Julian Robertson Jr
Museum of Modern Art Eli Broad, David Rockefeller Sr
Lincoln Center for the Performing Arts David Rubenstein, Julian Robertson Jr
Peterson Institute for International Economics David Rockefeller Sr, David Rubenstein
Wildlife Conservation Society Michael Bloomberg, Julian Robertson Jr
Center for American Progress Tom Steyer, Marion Sandler
Graham Holdings Company Melinda French Gates, Warren Buffett
Smithsonian Institution Phillip Frost, David Rubenstein
Council on Foreign Relations David Rockefeller Sr, David Rubenstein
Johns Hopkins University Michael Bloomberg, David Rubenstein