07:33 AM EDT, 06/16/2026 (MT Newswires) -- PRF Technologies ( PRFX ) shares were down 27% in Tuesday premarket activity, following the previous session's 83% gain.
Cuprina ( CUPR ) stock was down 25% after a 111% gain in Monday's session.
J-Star ( YMAT ) shares were down 25% after the company said late Monday it received a Nasdaq delisting determination notice.
Wearable Devices ( WLDS ) stock was down 20%, following the previous session's 26% gain.
Tianci International ( CIIT ) shares were down 19%, extending the previous session's nearly 16% decline.