27. LEN BLAVATNIK

$18.3  SELF-MADE SCORE: (

BILLION SOURCE: DIVERSIFIED AGE: 62 RESIDENCE: LONDON PHILANTHROPY SCORE: In November 2018 the Sovietborn, U.S.-educated billionaire pledged $200 million through his foundation to Harvard Medical School, the school’s largest gift ever. It follows multimilliondollar gifts to Oxford, U Penn, Columbia and Stanford. Blavatnik and partners bought former Soviet state-owned oil company TNK and sold it to Rosneft in 2013. He acquired Warner Music Group in 2011 and engineered the creation of multinational chemical company LyondellBasell in 2007.