The surging markets have exacerbated the concentration risk of the single-stock-dominated fortunes typical of many tech billionaires, said Thorne Perkin, president of Papamarkou Wellner Asset Management.

“From a portfolio-management perspective, it makes sense to spread it around,” he said.

Covid Economy
Also among the biggest sellers are some noteworthy beneficiaries of the Covid economy. Zoom Video Communications founder Eric Yuan and used-car retailer Carvana Co.’s Ernest Garcia II have together received more than $1.75 billion from stock sales since March 2020, according to the Bloomberg Billionaires Index. George Kurtz, chief executive officer of cybersecurity firm CrowdStrike, has sold shares worth at least $250 million over that period.

Zoom founder Yuan—the poster child, in many ways, for the coronavirus economy—has stepped up his sales this year as the firm’s share price slumped. In 2020, he typically offloaded about 140,000 shares a month through a trading plan, which generated more than $350 million over the course of the year.

Since March, he’s sold almost 200,000 shares a month on average, yielding him about $185 million. He also donated more than a third of his stake in the San Jose-based company as part of “typical estate planning practices,” according to a spokesman. Some of the cash from his share sales fund donations to unspecified “humanitarian causes.”

With assistance from Jack Witzig and Anders Melin.

This article was provided by Bloomberg News.

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