SHELDON SOLOW

$4.6 BILLION  SELF-MADE SCORE: ( SOURCE: REAL ESTATE AGE: 91 RESIDENCE: NEW YORK CITY

PHILANTHROPY SCORE:

The New York native was a small-time developer before erecting 9 West 57th Street in 1974. The 49-story office tower, whose tenants include KKR and Apollo Global Management, makes up roughly half of Solow’s fortune; he is currently working on a 52-story skyscraper across the street.