Top Premarket Gainers

07:15 AM EDT, 10/28/2026 (MT Newswires) -- Ultralife (ULBI) shares were up 144% pre-bell Wednesday after EnerSys (ENS) agreed to acquire the company in an all-cash deal. Braiin (BRAI) stock was 36% higher after a 56% rise in the previous session, when the company said it expanded its Radius contact-center platform by launching Force AI, which allows customers to use any large language model without being tied to a single provider. DMC Global (BOOM) shares were up more than 18% following the company's Q3 financial results. Vertiv (VRT) stock was 16% higher after the company reported higher Q3 adjusted earnings and revenue. Ultra Clean (UCTT) shares were up 14% after the company posted higher fiscal Q3 adjusted earnings and revenue.