Nvidia founder and CEO Jensen Huang has admitted to having an extramarital affair as the chipmaker investigates reported allegations that a Chinese businesswoman close to him may have been working for Beijing’s intelligence services. Beijing has rejected the espionage claims as “baseless”, while Nvidia has said it had no reason to believe company secrets or US national security were compromised. The controversy wiped about US$190 billion off the chipmaker’s market value in a single day. US President Donald Trump said on Monday that the FBI was also investigating the issue, adding that the Nvidia CEO had said he was unaware of the woman’s alleged ties to Chinese intelligence.