Sector Update: Healthcare Stocks Advance Late Afternoon

04:01 PM EDT, 09/24/2026 (MT Newswires) -- Healthcare stocks were higher late Thursday afternoon, with the NYSE Healthcare Index increasing 0.9% and the State Street Health Care Select Sector SPDR ETF (XLV) rising 0.7%. The iShares Biotechnology ETF (IBB) added 1.3%. In corporate news, Arcturus Therapeutics (ARCT) shares jumped past 6% in Thursday trading, a day after it reported interim phase 2 results for ARCT-810 in OTC deficiency and unveiled LUNAR 2.0, its mRNA delivery platform. Revvity (RVTY) shares gained more than 6% after the company launched its GSP T1D 3plex kit, a fully automated test that helps identify children at risk of developing type 1 diabetes before symptoms appear. Mesoblast (MESO) shares rose 1.3% after the company said the US Food and Drug Administration has approved a new potency assay, T-cell Proliferation Inhibition BioAssay, for release and stability monitoring of all new commercial Ryoncil lots. ACADIA Pharmaceuticals (ACAD) shares fell about 13% after the company said its phase 2 study of remlifanserin for Alzheimer's disease psychosis narrowly missed its primary endpoint.