FRAMINGHAM (09/19/2003) - Forbes magazine released its list of the 400 wealthiest U.S. citizens this week. No surprise that once again Microsoft Corp. Chairman and Chief Software Architect Bill Gates has not only grabbed the top spot but is the world's richest man, with a net worth of US$46 billion. Gates managed to increase his personal fortune by $3 billion over his net worth of $43 billion on the 2002 list. Gates' financial savvy apparently didn't rub off on Microsoft CEO Steve Ballmer, however. Ballmer fell from No. 10 on last year's list to No. 11 with a net worth of $12.2 billion. Dell Inc. Chairman and CEO Michael Dell moved from No. 11 to No. 10 this year with a personal fortune of $13 billion. Meanwhile Microsoft cofounder Paul Allen kept hold of the No. 3 spot, with a net worth of $22 billion. Other wealthy tech players on the list included Oracle Corp. Chairman and CEO Larry Ellison, who came in at No. 9 with a net worth of $18 billion; eBay Inc. founder Pierre Omidyar, who landed No. 29 with $6.9 billion, and Amazon.com Inc. CEO Jeff Bezos, who came in at No. 32 with $5.1 billion.