Viking Therapeutics IncViking reported positive topline maintenance dosing data for VK2735, validating every-other-week and monthly regimens in obesity.

Viking Therapeutics surged 26.5% to $38.08 as of 11:42 a.m. ET on September 22, 2026, after reporting positive topline results from a randomized, double-blind, placebo-controlled maintenance dosing study of its lead GLP-1/GIP agonist VK2735 in adults with obesity. The trial used weekly subcutaneous induction dosing followed by less frequent maintenance regimens, including every-other-week and monthly schedules, which CEO Brian Lian said in July was designed to explore various maintenance regimens. Viking framed the data as validating multiple maintenance schedules, a commercially significant finding because patient adherence is a well-known weakness of injectable GLP-1s, though the company-reported topline results have not yet undergone peer review or regulatory review. Prior Phase 2 work set the bar, with VENTURE showing up to 14.7% mean body weight reduction after 13 weekly subcutaneous doses and VENTURE-Oral delivering up to 12.2% at 13 weeks, with up to 80% of subjects reaching at least 10% weight loss. The rest of the obesity complex barely moved, with Structure Therapeutics down 0.7% at $36.56, Eli Lilly up 1.1% at $1,177.43, and Novo Nordisk down 0.7% at $39.54, as traders read the news as company-specific validation rather than a sector-wide catalyst. Viking holds $502 million in cash at quarter end and both VANQUISH-1 and VANQUISH-2 fully enrolled, giving it leverage to operate on its own timeline, and Lian has said oral VK2735 Phase 3 initiation is expected in Q4 2026.
Viking Therapeutics IncViking reported positive topline maintenance dosing data for VK2735, validating every-other-week and monthly regimens in obesity.
Structure Therapeutics Inc. American Depositary Shares
Eli Lilly and Company
Novo Nordisk A/S