Nvidia opens probe as Huang scandal wipes $250 billion off value

Nvidia opened an independent investigation into Chief Executive Jensen Huang after he acknowledged an extramarital relationship with a businesswoman US intelligence believes was part of a Chinese espionage effort. The fallout hit investors hard: Nvidia shares fell about 4% on Monday, erasing roughly $250 billion in market value. The board said it had no reason to believe company secrets or national security had been compromised, but launched the review because of concerns raised by recent reporting. Lawmakers have asked Huang to appear before several congressional committees next week to answer questions about his interactions and Nvidia's safeguards against espionage. China rejected the allegations as baseless.