Len Blavatnik

Sir Leonard "Len" Blavatnik is a Ukrainian-born American and British businessman and philanthropist who founded the New York–headquartered investment company Access Industries in 1986. Access Industries holds interests across sectors including chemicals, media, entertainment, technology, and biotechnology, with notable stakes in companies such as LyondellBasell and Warner Music Group. Through the Blavatnik Family Foundation he is a major supporter of scientific research, higher education, and cultural institutions, and his estimated net worth is around $33 billion.