Nvidia chief Jensen Huang’s fortune fell by $7.5 billion in a single day amid an investigation into an espionage case. According to Forbes, the businessman's net worth is now estimated at $154.7 billion.

Nvidia shareholders have filed a lawsuit against Huang, accusing the company and its CEO of misleading investors. According to the plaintiffs, the company’s management concealed information about Huang’s alleged relationship with Alice Huang, a woman whom U.S. intelligence agencies suspect of spying for China. The amount of compensation sought by the shareholders has not yet been disclosed.