Health care stocks were mixed pre-bell Monday, with the State Street Health Care Select Sector SPDR ETF (XLV) down 0.7% and the iShares Biotechnology ETF (IBB) 1.9% higher.
Regeneron Pharmaceuticals (REGN) stock was down more than 12% after the company said two dose levels of fianlimab in combination with cemiplimab, evaluated as a first-line treatment in unresectable locally advanced or metastatic melanoma, failed to meet a primary endpoint in its phase 3 trial.