Top Premarket Decliners

07:42 AM EDT, 09/21/2026 (MT Newswires) -- Research Frontiers (REFR) shares were down 27% in Monday's premarket activity, swinging from a 68% rise in the prior session. Delixy (DLXY) stock was 25% lower following a 1.8% gain in the previous session. Quanome Technologies (QNME) shares were down 19% after a 92% rise in the Friday session. NextNRG (NXXT) stock was nearly 17% lower, extending a 1.7% loss in the previous session.