Healthcare stocks were mixed pre-bell Monday, with the State Street Health Care Select Sector SPDR ETF (XLV) 0.4% higher and the iShares Biotechnology ETF (IBB) down 0.2%,

Guardant Health (GH) lost a $245.2 million patent infringement lawsuit filed by TwinStrand Biosciences and the University of Washington, TwinStrand said. Guardant Health stock was down more than 1% premarket.