09:18 AM EDT, 06/18/2026 (MT Newswires) -- Healthcare stocks were advancing premarket Thursday, with the State Street Health Care Select Sector SPDR ETF ( XLV ) up 0.2% and the iShares Biotechnology ETF (IBB) 0.5% higher.

Denali Therapeutics ( DNLI ) stock was up more than 1% after the company said it has signed an agreement to sell its rare pediatric disease priority review voucher for gross proceeds of $195 million.

Pfizer ( PFE ) shares were down more than 1% after the company said Chief Financial Officer Dave Denton will step down from his position on Aug. 15 after accepting a position outside the pharmaceutical industry in the consumer goods sector.

NovoCure ( NVCR ) stock was down more than 15% after the company said a phase 3 trial evaluating its tumor treating fields therapy in patients with newly diagnosed glioblastoma failed to meet its primary endpoint.