According to a recent Securities and Exchange Commission filing, an 8% stake in the Chinese online retailer he co-founded is going to be sold by the billionaire executive vice chairman.

Brooklyn Nets v Los Angeles Lakers

The Nets played the Lakers last month.

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According to the filing, Morgan Stanley was chosen to execute the sale of three million of Tsai's Alibaba shares.

Based on the share price at midday Friday, Tsai will cash out about $263 million.

According to Forbes, Tsai's stake in the company is worth about a quarter of his net worth.

Forbes inquired about the matter, but Morgan Stanley and Blue Pool did not reply.

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The owner of the NBA's Brooklyn Nets is worth $8.3 billion. He bought the team for $2.35 billion, but Forbes valued it at $3.5 billion.

Key Background

The $25 billion initial public offering of Chinese e-tailer Alibaba was the biggest debut of all time. The Chinese government targeted the firm with antitrust legislation and a $2.9 billion fine, causing shares of the firm to tank more than 70%. The political headaches in the U.S. and China have continued to beleaguer, with the company's stock falling after the Chinese President secured historic terms and an ongoing spat between Chinese and American regulators over New York-listed Chinese firms' auditing practices.

The Nets owner watches the Warriors win titles and dreams of making a billion dollars.

The NBA has an uneasy relationship with China.