Graphic: The richest tech billionaires

Their combined net worth is $1.08 trillion

The old adage that the rich just keep getting richer is certainly true for the world’s wealthiest tech billionaires this year. For the first time on Forbes’ third annual Richest In Tech list, the 100 richest self-made tech billionaires are worth more than 

$1 trillion. Their combined net worth of $1.08 trillion is up 21% from last year, buoyed by a dizzying rise in stock prices at companies such as Facebook, Amazon and Chinese social media behemoth Tencent. 

Half of the $189-billion increase came from the 10 richest tech billionaires. More than three-quarters of the list’s billionaires have bigger fortunes than a year ago. Here is a look: