ERIC SMIDT

$4.1 BILLION  SELF-MADE SCORE: ) SOURCE: HARDWARE STORES AGE: 59 RESIDENCE: BEVERLY HILLS, CA

PHILANTHROPY SCORE:

With his dad, Smidt started Harbor Freight Tools as a teenager. He and his father (d. 2016) had a falling out that left Smidt as sole owner and CEO of the now $4.7 billion (revenues) home improvement retailer.