 Shares of Digital Ally Inc. more than doubled, up 122, in active premarket trading Monday, on the heels of a 33.4 jump on Friday, as the maker of body cameras used by law enforcement drew investor interest as protests against police killings erupted around the country. The stock was on track to open at the highest price seen during regular-session hours since June 17, 2019. Cemtrex Inc. also attracted investor interest in the wake of the public unrest as shares of the security services company and maker of wearables and smart devices jumped 116, putting them on track to open at a 4 12-month high. Shares of Axon Enterprise Inc. , which makes electrical weapons for defense and has an app to remotely view body camera footage, rallied 5.3. The stocks gains come as futures for the SP; 500 fell 0.1. 