Forbes publishes an annual list of the 400 richest Americans. The Forbes 400 is a snapshot of wealth on Sept. 10, 2009. The minimum net worth for inclusion in this year’s rankings was USD 1.3 billion, up $300 million from last year. See the full list of 400. Or create your own list.
1. William Gates III 
2. Warren Buffett
3. Lawrence Ellison
4. Christy Walton & family
5. Jim C. Walton
6. Alice Walton
7. S. Robson Walton
8. Michael Bloomberg
9. Charles Koch
10. David Koch
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