This document summarizes how much several prominent tech billionaires lost in wealth in 2009 according to Forbes. The biggest loser was Bill Gates, who lost $18 billion and remained the richest with $40 billion. Other large losses belonged to Michael Dell at $6.7 billion and Larry Page/Sergey Brin each losing $4 billion. Most on the list saw declines in 2009 from the technology industry downturn.