Rivian Automotive’s stock soared by more than 8% in premarket trading on Thursday, after Uber announced it would invest up to $1.25 billion in the electric vehicle maker—whose shares have plummeted in a years-long rout—to deploy tens of thousands of robotaxis across the U.S. by the next decade. Key Facts Shares of Rivan jumped 8.2% in premarket trading on Thursday, marking what would be a slight rebound for the stock after stumbling by more than 14% this year. Uber said Thursday it would invest up to $1.25 billion in Rivian through 2031, with plans to purchase 10,000 of Rivian’s upcoming R2 vehicle and an option to buy an additional 40,000 robotaxis in 2030. An initial $300 million investment from Uber to Rivian is expected shortly after the deal’s signing and is subject to regulatory approval, Uber said. The R2 robotaxis are expected to be available through Uber in 25 cities across the U.S., Canada and Europe, with San Francisco and Miami as the launching sites in 2028, the companies said.  Uber’s Robotaxi Expansion: From Rivian To Nvidia Uber has announced several partnerships over the last year as it competes with the Alphabet-backed Waymo in the robotaxi market. The company announced a strategic partnership with the Amazon-backed Zoox last week, with plans for Zoox’s robotaxis to be made available through Uber by 2027. In October, Stellantis announced a joint project with Uber, Nvidia and Foxconn, with plans for Uber to deploy robotaxis from the automotive conglomerate—spanning Jeep, Dodge, Chrysler and more—in the U.S. That same day, Nvidia said it was partnering with Uber to increase Uber’s autonomous vehicle fleet to 100,000, starting in 2027. Lucid, in September 2025, announced a $300 million investment from Uber, which said it would later deploy Lucid’s robotaxis. Read the full story on Forbes: https://www.forbes.com/sites/tylerroush/2026/03/19/rivian-shares-rally-8-after-uber-invests-up-to-125-billion-in-robotaxi-deal/ Learn more about your ad choices. Visit megaphone.fm/adchoices