Why Merck Stock Has Risen 28.2% Year-to-Date
Merck (MRK) stock has risen from $54.93 on January 2 to $70.42 on September 18—a 28.2% increase year-to-date. The performance of Merck stock has been closely related to the sales, clinical trial outcomes, and regulatory decisions for the company’s leading immuno-oncology drug, Keytruda. Approved in 13 indications and eight tumor types, Keytruda reported sales of $1.7 billion in the second quarter.