Investing.com – Health care stocks took a dive midday after medical device company Cooper posted lower-than-expected results.
Cooper (NYSE:) missed its after the bell yesterday but beat revenue forecasts.
Still, shares slumped 8.5% as of 11:30 AM ET (16:30 GMT).
The index was down about 2%.
Other notable stocks include Universal Health Services (NYSE:), which dipped 2.6%, and Celgene (NASDAQ:), which fell 1.9%.
Medical marijuana companies were among the biggest gainers amid news that Altria (NYSE:) will pay $1.8 billion for 45% ownership of Cronos Group (NASDAQ:), with the potential to increase its stake to 55% over the next four years.
Cronos jumped 21%, while Altria rose 2%.