Forbes released its annual list of the 400 richest Americans today, and there has been a bit of a shakeup in the top 10.
#10 Michael Bloomberg is worth $25 billion
Last year: $22 billion
Age: 70
Bloomberg, who is serving his third term as mayor of New York City, is founder and majority owner of Bloomberg L.P., a financial data-services firm
Source: Forbes
#9 S. Robson Walton is worth $26.1 billion
Last year: $21 billion
Age: 68
S. Robson Walton is the eldest son of Walmart founder Sam Walton and currently serves as chairman of the company.
Source: Forbes
#8 Alice Walton is worth $26.3 billion
Last year: $20.9 billion
Age: 62
Alice is another daughter of Walmart founder Sam Walton, and an heiress to the family fortune.
Source: Forbes
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