Actinium Pharmaceuticals (ATNM) shares slumped more than 69% pre-bell Monday after the company said the US Food and Drug Administration has determined that phase 3 data for the company's acute myeloid leukemia treatment candidate are not adequate to support a biologics license application.
Inspirato (ISPO) shares fell 27%, extending Friday's slide.
VSee Health (VSEE) shares retreated 25%, paring Friday's rally.
First Financial Bankshares (FFIN) shares dropped more than 23% following a 3% loss in the previous session.
Toyo (TOYO) shares were down more than 21% premarket, erasing gains from the previous session.
Price: 1.88, Change: -4.29, Percent Change: -69.53
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