INDIANAPOLIS–(BUSINESS WIRE)–Allison Transmission Holdings Inc. (NYSE: ALSN), Allison Transmission, a leading designer and manufacturer of conventional and electrified vehicle propulsion solutions and the largest global manufacturer of medium- and heavy-duty fully automatic transmissions for commercial and defense vehicles, today announced that it will host a virtual Technology Day on Wednesday, October 6, 2021 at 10:00 AM ET. Allison Transmission’s leadership team will discuss the company’s