Nvidia reduced its stake in British chip firm Arm Holdings by about 44% and exited its holdings in Serve Robotics and SoundHound AI in the fourth quarter, a regulatory filing showed on Friday. The Santa Clara, California-based company reported new holdings in the quarter ended December 31, including 1.7 million shares in China’s self-driving startup WeRide Inc, sending its shares up by 96% in premarket trading. Shares of Nebius Group rose 6% after Nvidia reported 1.2 million shares in AI cloud firm.