The 10 richest Americans

The 10 richest Americans

Despite the stalled economy, America's richest continue to get richer. As a group, the wealthiest 400 are worth $1.5 trillion, roughly the GDP of Canada.

By Luisa Kroll and Kerry A. Dolan, Forbes.com

A good year at the top

The 400 richest Americans saw their collective wealth grow by 12% over the past year, meaning the nation's wealthiest slightly outperformed the Standard & Poor's 500 Index ($INX) over the period.

 is the nation's richest person for the 18th consecutive year; the last time he didn't rank No. 1 was 1993, when his good friend Warren Buffett eclipsed him. Buffett's fortune tumbled by $6 billion this year, making him the biggest loser among the nation's most wealthy. Buffett gave away $3.3 billion, and he was pinched by a 10% decline in the value of Berkshire Hathaway (BRK.A) stock.

This year's headlines may belong to a younger group of entrepreneurs marching their way up the ranks, particularly those who are impacting social behavior online. Leading the pack is Facebook co-founder Mark Zuckerberg, who $10.6 billion to his fortune, making him the year's biggest gainer and pushing him into the top 20 for the first time, with a net worth of $17.5 billion. Zuckerberg came in one notch ahead of Google (GOOG) co-founders Sergey Brin and Larry Page, who added $1.7 billion apiece to their fortunes but slipped five spots in the rankings and are tied at No. 15.

Notable newcomers include Bob Stiller of GMCR) and Th Group's Bob Parsons. Among those returning to the list this year are Howard Schultz of Starbucks (SBUX) and Dan Gilbert, the chairman and founder of Quicken Loans
.



Charles Koch

Rank: 4
Net worth: $25 billion
Age: 75
Source of wealthKoch Industries (manufacturing)
Residence: Wichita, Kan.

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Warren Buffett

Rank: 2

Net worth: $39 billion

Age: 81

Source of wealth: Berkshire Hathaway

Residence: Omaha, Neb.

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David Koch

Rank: 5

Net worth: $25 billion

Age: 71

Source of wealth: Koch Industries

Residence:

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Alice Walton

Rank: 10

Net worth: $20.9 billion

Age: 61

Source of wealth:

Residence: Millsap, Texas

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Christy Walton

Rank: 6

Net worth: $24.5 billion

Age: 56

Source of wealth: Wal-Mart Stores (WMT)

Residence: , Wyo.

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Larry Ellison

Rank: 3

Net worth: $33 billion

Age: 67

Source of wealth: Oracle (ORCL)

Residence: Redwood City, Calif.

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Bill Gates

Rank: 1

Net worth: $59 billion

Age: 55

Source of wealth:  (MSFT)
(Microsoft publishes MSN Money)

Residence: Medina, Wash.

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Sheldon Adelson

Rank: 8

Net worth: $21.5 billion

Age: 78

Source of wealth: Casinos

Residence: Las Vegas

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Jim Walton

Rank: 9

Net worth: $21.1 billion

Age: 63

Source of wealth: Wal-Mart

Residence: Bentonville, Ark.

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George Soros

Rank: 7

Net worth: $22 billion

Age: 81

Source of wealth: Hedge funds

Residence: Katonah, N.Y.

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