MARK WALTER

$3.3

BILLION  SELF-MADE SCORE: * SOURCE: FINANCE AGE: 59 RESIDENCE: CHICAGO PHILANTHROPY SCORE: An SEC probe into Guggenheim Partners over controversial real estate deals linked to CEO Walter reportedly ended in May with no penalty, and the firm’s assets have edged up to $270 billion from $265 billion last year. Meanwhile, an entity he controls received $231 million in July as prepayment for the 2022 delivery of up to 4.3 million shares of online car vendor Carvana, effectively locking in post-IPO gains of 400%. He’s also invested in plant-based-beef firm Beyond Meat, whose shares have more than doubled since going public in May.