56. JERRY JONES

$8.6

BILLION  SELF-MADE SCORE: * SOURCE: DALLAS COWBOYS AGE: 77 RESIDENCE: DALLAS PHILANTHROPY SCORE: The Dallas Cowboys owner continues to bet big on oil and gas. In July, Jones invested $475 million in publicly traded energy company Comstock Resources in exchange for 50 million new shares and $175 million worth of convertible preferred stock. But his most prized asset is still his NFL team. At $5.5 billion the Cowboys are the world’s most valuable sports team. Its 91-acre headquarters, The Star, continues to draw new tenants; in February beverage firm Keurig Dr Pepper announced plans to move its Texas headquarters to the site. Jones has come a long way from his days working at his parent’s grocery store, Pat’s Supermarket, where he started as a customer greeter at age 9.