Healthcare stocks declined Tuesday afternoon, with the NYSE Healthcare Index falling 1% and the State Street Health Care Select Sector SPDR ETF (XLV) shedding 0.9%.
The iShares Biotechnology ETF (IBB) rose 0.6%.
In corporate news, Align Technology (ALGN) shares fell 3.4% after the European Commission said Tuesday it has opened an antitrust probe to determine whether the company has violated EU competition rules by tying its dental clear aligners to its intra-oral scanners in the European Economic Area.