Shares of Merck & Co. Inc. sank Monday, to buck the gains in the health care sector and the broader stock market, after Citi Research backed away from its bullish stance on the drug maker, citing concerns over its HIV and COVID-19 virus treatments.
Shares of Merck & Co. Inc. sank Monday, to buck the gains in the health care sector and the broader stock market, after Citi Research backed away from its bullish stance on the drug maker, citing concerns over its HIV and COVID-19 virus treatments.