FAC ▲ +2.2% - Factorial Energy Inc. $FAC FACWW - Mitsui Kinzoku Partners with Factorial to Scale All-Solid-State Battery Manufacturing Factorial Energy rose 2.2% following news of a partnership with Mitsui Kinzoku to scale manufacturing of its all-solid-state batteries. The collaboration with the major Japanese materials company signals progress toward commercialization of the technology, which investors view as a validation of Factorial's battery platform and a step toward broader production capacity. 17-SEP-2026 07:00 AM ET