08:56 AM EDT, 06/24/2025 (MT Newswires) -- Health care stocks were flat to higher premarket Tuesday with the iShares Biotechnology ETF (IBB) recently inactive and the Health Care Select Sector SPDR Fund (XLV) recently up 0.4%.

Nektar Therapeutics ( NKTR ) shares were surging by more than 121% after the company said the phase 2b study of investigational rezpegaldesleukin met its primary endpoint in patients with moderate to severe atopic dermatitis.