07:28 AM EST, 01/30/2025 (MT Newswires) -- Alterity Therapeutics ( ATHE ) shares soared 68% pre-bell Thursday after a 2.7% loss in the previous session.

Ark Restaurants ( ARKR ) shares rose 51% following a 2.5% increase on Wednesday.

Tectonic Therapeutic ( TECX ) shares surged 30% after the company said that its phase 1b trial showed that TX45 improved left ventricular function and pulmonary hemodynamics in patients with Group 2 pulmonary hypertension.

Treace Medical Concepts ( TMCI ) shares were up 4.8%, adding to Wednesday's advance.