NVIDIA CORP shares tumbled nearly 4% on Monday following reports that CEO Jensen Huang faces an internal probe over an extramarital affair and alleged espionage. The development hits the tech sector at the start of the week, compounding anxieties after its worst week in well over a year. As Huang steers the global artificial intelligence buildout, investors are now pricing the risk of executive upheaval.

Spying Allegations Upend Tech Leadership