theodp writes "The economy is improving, at least for the super rich. After two years of declines, the aggregate net worth of the U.S.'s wealthiest 400 citizens leapt 10% in the past year to $995 billion, according to Forbes' annual ranking. The gains are part of a continuing shift in wealth from the East coast to the tech-centric West. Bill Gates capped off a decade in the top spot after his fortune increased by $3B to $46B. Microsoft co-founder Paul Allen held onto 3rd place, his net worth rising $1B to $22B. Amazon's Jeff Bezos, who saw his fortune expand by more than $3B to $5.1B, was the top gainer on the list. And with a measly $1.4B, Jerry Yang of Yahoo! found himself in a 16-way tie for 162nd place."