118. David Filo
Big changes in the past year at Yahoo, which Filo founded with Jerry Yang (No. 324) in 1994. In June, the company sold its internet business to Verizon for $4.5 billion. Filo’s wealth has jumped $1.7 billion since last year, thanks largely to the restructuring. After the sale of the core business, the remains of Yahoo—lucrative stakes in Alibaba and Yahoo Japan—were renamed Altaba, which has a lofty $60 billion market capitalization. Filo and Yang met as doctoral students in computer science at Stanford but dropped out to build Yahoo.