This chart shows where all the richest billionaires in tech are from

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Alibaba's Jack Ma is one of China's contingent of 20.

We all know there's a huge concentration of tech power in Silicon Valley, but that's not the only place where tech money has spread. The tech industry has made billionaires all over the world.

This year's list of the 100 richest tech billionaires from around the globe, compiled by Forbes, lists people who live in places from Singapore to Brazil - with 20 in China.

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Data analyst Jody Sieradzki at Dadaviz has created a chart that shows how many of the world's top tech billionaires are from each country. No surprise that that the United States leads the field by a large margin.

Dadaviz