Focus Universal (FCUV) shares retreated 22% pre-bell Monday, paring Friday's rally.
SR Bancorp (SRBK) shares fell 20% after the company reported late Friday lower Q4 earnings and revenue.
Annovis Bio (ANVS) shares dropped 18% following a muted session.
Unisys Corporation (UIS) shares were down 3% after a 1.5% decline in the previous session.