SES AI Corporation (NYSE:SES) is among the 7 Best EV Battery Stocks to Buy Now. SES AI Corporation (SES) & Top Material to Expand Cell Manufacturing Capacity in Korea SES AI Corporation (NYSE:SES) and Top Material announced plans to work together to increase battery cell manufacturing capacity in Korea for drones and urban air transportation applications, according to a report published in TheFly on December 18, 2025. This partnership aims to promote compliance with the US National Defense Authorization ...