Arrowhead stock leaps after gene-silencing obesity drug doubles Lilly’s Zepbound weight loss
Arrowhead Pharmaceuticals shares jumped 16% to $74.13 Tuesday after early trial data showed its obesity drug ARO-INHBE, combined with Eli Lilly’s tirzepatide, led to 9.4% weight loss at 16 weeks in obese patients with type 2 diabetes, versus 4.8% for tirzepatide alone. MRI scans showed greater reductions in visceral and liver fat.