Health care stocks were higher Wednesday afternoon, with the NYSE Health Care Index rising 1.2% and the Health Care Select Sector SPDR Fund (XLV) up 0.9%.
The iShares Biotechnology ETF (IBB) climbed 2.2%.
In corporate news, Boston Scientific (BSX) reported stronger-than-expected Q4 sales amid a sharp gain in its cardiovascular segment. The stock rose 1.7%.
UnitedHealth Group (UNH) shares fell 1.6% following a now-deleted post from investor Bill Ackman on X questioning the company's profitability and saying that he would short its stock, Bloomberg reported.
Novo Nordisk (NVO) shares rose 5%. The company reported Q4 earnings of 6.34 Danish kroner ($0.88) per share, exceeding FactSet analyst consensus of 5.96 kroner.