NEW YORK, Sept. 23 (UPI) -- Microsoft founder Bill Gates and Warren Buffet of Berkshire Hathaway held on to the top spots on Forbes magazine's list of the 400 richest in the United States.
Both Gates increased his wealth this year to $54 billion and Buffet's stack reached $45 billion. Most of the billionaires on the list released Tuesday grew richer -- their collective net worth was up 8 percent to a total of $1.57 trillion.