01:55 PM EDT, 09/04/2025 (MT Newswires) -- Health care stocks rose Thursday afternoon, with the NYSE Health Care Index and the Health Care Select Sector SPDR Fund (XLV) each adding 0.2%.

The iShares Biotechnology ETF (IBB) was decreasing 0.6%.

In corporate news, Nektar Therapeutics ( NKTR ) shares jumped over 19% after late-stage trial results from Sanofi's ( SNY ) competing atopic dermatitis drug, amlitelimab, failed to meet investor expectations. Sanofi ( SNY ) shares fell past 8%.

Bright Minds Biosciences ( DRUG ) shares gained 1.7% after the company said Thursday that preclinical results for its investigational drug BMB-201 in a rat model of vascular headache showed "greater effect sizes" than sumatriptan at several timepoints.

Medtronic ( MDT ) shares rose 1% after it said Thursday that a study evaluating the Hugo robotic-assisted surgery, or RAS, system in inguinal and ventral hernia repair procedures met its primary effectiveness endpoint.