Net Worth: $22 billion (Down $9 billion from last year, up from the No. 7 richest in 2008.) Source: Ikea/Sweden Age 83. Divorced, remarried; four children.
Opened first Ikea store 50 years ago; store's name is a combination of initials of his first and last name, his family farm and the nearest village. Retired in 1986; company's "senior adviser" still reportedly works tirelessly on his brand.
Net Worth: $35 billion (Was No. 2 last year, lost $25 billion over the past year.) Source: Telecom/Mexico Age 69. Widowed, six children.
Economic downturn and plunging peso shaved $25 billion from the fortune of Latin America's richest man. Global recession testing his ability to live up to the principles he sets for his employees: "Maintain austerity in times of fat cows."
Net Worth: $37 billion (Was No. 1 last year, lost $25 billion over the past year.) Source: Investments/U.S. Age 78. Widowed, remarried; three children.
Last year America's most beloved investor was the world's richest man. This year he has to settle for second place after losing $25 billion in 12 months. Shares of Berkshire Hathaway are down 45% since last March.