ENDRA Life Sciences (NDRA) shares were up 140% pre-bell Tuesday following a 2.4% loss in the previous session.
BioSig Technologies (BSGM) shares were 30% higher after the company said late Monday it signed deals with an institutional investor for up to $1.1 billion in growth financing.
Optical Cable (OCC) shares were up 28%, a day after the company said it secured an investment from and entered into a strategic partnership with Lightera.
Bolt Projects (BSLK) shares were 28% higher following a 2.7% decrease in the previous session.
Chemours Co. (CC) stock was up 13% after Monday's 3.9% loss.