In a matter of days, DeepSeek proved to be so popular as to climb to the top of Apple's App Store, surpassing OpenAI's ChatGPT as the most downloaded app. But for owners of Nvidia stock, and stock traders in general, DeepSeek is on track of becoming a black swan — an unexpected event with extreme consequences.

Managers of Norway’s Government Pension Global Fund are resigned to living with tech’s high concentration risk but say stocks like Nvidia have some bubble protection due to this one factor.

By Ankur Banerjee, Rae Wee and Amanda Cooper LONDON/SINGAPORE (Reuters) -Technology shares steadied on Tuesday, led by a modest recovery in Nvidia after its record-breaking wipeout in market value in a rout sparked by a low-cost Chinese artificial intelligence model that may threaten the dominance of U.