A former hedge - fund manager , Steyer pledged to donate the majority of his wealth to charitable causes in 2010 .
Businessman Tom Steyer founded NextGen America ( originally called NextGen Climate ) in 2013 , and serves as president .
A former hedge - fund manager , Businessman pledged to donate the majority of his wealth to charitable causes in 2010 .
Businessman Tom Steyer founded NextGen America ( originally called NextGen Climate ) in 2013 , and serves as president .