Nvidia's stock declined by more than 4% following the company's board announcement of an investigation into CEO Jensen Huang's alleged ties with a suspected Chinese spy, according to TechCrunch. The probe has raised concerns among investors about the potential implications for the semiconductor giant.

TechCrunch also cited a securities law expert who warned that Nvidia’s previous assurances that the situation was 'normal' might lead to costly challenges for the company. This development adds a layer of uncertainty to Nvidia’s corporate governance and risk management.

For Japanese investors and market watchers, this incident highlights the growing scrutiny on executive relationships within global tech firms amid geopolitical tensions, which can influence stock movements in the FX and equity markets.