29. STEPHEN SCHWARZMAN

$17.7  SELF-MADE SCORE: *

BILLION SOURCE: INVESTMENTS AGE: 72 RESIDENCE: NEW YORK CITY PHILANTHROPY SCORE: The Blackstone cofounder and CEO began working at his family’s store, Schwarzman’s Curtains and Linens, at age

10, wrapping gifts and folding handkerchiefs. He started a lawn-mowing business at 14, employing his younger twin brothers to mow while he brought in the clients. “Our business lasted three full years before we had an employee strike,” Schwarzman says. In his memoir, published in September, the Philadelphia native revealed that the first visitor to Blackstone in 1985, the year it was founded, was then little-known real estate investor Sam Zell (No. 119), who went on to become a repeat client at Blackstone.