Top Premarket Decliners

07:35 AM EDT, 10/21/2026 (MT Newswires) -- Alpha Teknova (TKNO) shares were down 29% in premarket activity Wednesday after the company said it has priced an underwritten public offering of 8 million common shares at $5 apiece for expected gross proceeds of $40 million. Primech (PMEC) stock was 18% lower after a 7.7% rise in Tuesday's session when the company said its Primech AI unit will showcase an autonomous restroom-cleaning robot at the Clean Korea 2026 trade show. WISeSat.Space (SAIQ) shares were down 13% after a more than 100% rise at the previous close. Intuitive Surgical's (ISRG) stock was 6% lower after the company adjusted its global da Vinci procedure growth target range for 2026 and reported a $450 million settlement charge. Netflix (NFLX) shares were down 6% in premarket activity Wednesday after the company provided a downbeat Q4 outlook.