First US Bancshares (FUSB) shares slumped 38% pre-bell Tuesday following a 1.7% gain in the previous session.
CCC Intelligent Solutions Holdings (CCCS) shares fell 30% after closing flat on Monday.
Radiopharm Theranostics (RADX) stock was down 27% following a muted session.
Arko Corp. (ARKO) shares dropped 26%, adding to Monday's 1.2% loss.