Merck shares have been under pressure amid disappointing sales trends for its Gardasil HPV vaccine. The company's broader ...

President Donald Trump has warned a group of major U.S. drugmakers that his administration is set to impose tariffs on ...

Shares of Merck & Co. Inc. MRK rallied 2.08% to $89.50 Friday, on what proved to be an all-around rough trading session for ...