BOBBY MURPHY

$3.7

BILLION  SELF-MADE SCORE: * SOURCE: SNAP AGE: 31 RESIDENCE: VENICE, CA PHILANTHROPY SCORE: The fortunes of Murphy and his Snap cofounder Evan Spiegel (No. 225) each rose by more than $1 billion since last year, thanks to the turnaround of the social media network. The stock has risen by more than 170% since the beginning of 2019. Snap, which had been losing daily active users, gained 13 million in the last quarter, for a total of 203 million. Murphy, who serves as chief technology officer, met Spiegel when they were fraternity brothers at Stanford.