Healthcare stocks were higher Tuesday afternoon, with the NYSE Healthcare Index and the State Street Health Care Select Sector SPDR ETF (XLV) each adding 0.5%.
The iShares Biotechnology ETF (IBB) climbed 1.9%.
In corporate news, McKesson (MCK) has agreed to buy Precision Medicine in a deal worth about $2.25 billion as part of the drug distributor's efforts to boost its clinical research and commercialization services. McKesson shares rose 1.7%.