07:38 AM EDT, 03/14/2025 (MT Newswires) -- Xponential Fitness ( XPOF ) shares slumped 30% pre-bell Friday, a day after the company reported a wider Q4 loss and lower revenue.
MBX Biosciences ( MBX ) shares retreated 30%, extending Thursday's slide.
Cytek Biosciences ( CTKB ) shares fell 22% following a muted session.
Sera Prognostics ( SERA ) stock was down 15%, adding to Thursday's losses.