Alice Huang (right) facilitated at least US$7.5 billion of Nvidia chip shipments to Chinese firms. (AFP pic)BENGALURU: Nvidia shares extended losses on Tuesday, putting the chip giant on track to shed more than US$470 billion in market value over two sessions as concerns mounted over the fallout from CEO Jensen Huang's affair with a Chinese businesswoman alleged to be a spy for Beijing.

The CEO's relationship with Alice Huang helped facilitate shipments of at least US$7.5 billion worth of Nvidia chips to Chinese firms, The Information reported on Tuesday, citing two people who know her. Alice Huang and Jensen Huang are not related.

Nvidia's board launched an internal investigation on Sunday, and its independent directors on Tuesday said they had retained former acting US Attorney Joon Kim and law firm Wachtell, Lipton, Rosen & Katz to lead the company's investigation.