Chinese self-driving firm WeRide rises on investment from Grab

** U.S.-listed shares of Chinese autonomous driving firm WeRide WRD.O rise 4% to $10 premarket

** WRD says Singaporean tech company Grab GRAB.O committed an equity investment in co to ramp up deployment of Level 4 autonomous robotaxis and shuttles in Southeast Asia

** Grab and WeRide did not immediately respond to Reuters' requests for comment on the investment amount

** Grab shares were down 0.8%

** WRD says Grab's investment is expected to be completed by the first half of 2026

** Up to last close, U.S.-listed shares of WRD were down ~32%, GRAB up 8% YTD