09:18 AM EDT, 08/10/2026 (MT Newswires) -- Healthcare stocks were edging higher premarket Monday, with the State Street Health Care Select Sector SPDR ETF ( XLV ) slightly advancing and the iShares Biotechnology ETF (IBB) up 0.5%.

Sionna Therapeutics ( SION ) shares fell more than 89% after the company said it will not advance SION-719 as an add-on therapy to standard of care Trikafta in cystic fibrosis patients after a phase 2a proof-of-concept failed to meet its key activity endpoint of sweat chloride reduction.

AbCellera Biologics' ( ABCL ) ABCL635 met the primary efficacy endpoints in the phase 2 portion of a Phase 1/2 study, significantly lowering the frequency and severity of moderate-to-severe hot flashes versus placebo, the company said. AbCellera Biologics ( ABCL ) stock was up more than 33% pre-bell.

Axsome Therapeutics ( AXSM ) shares were up more than 2% after the company posted a higher Q2 revenue.