10 Most Undervalued Pharma Stocks To Buy Now

7. Merck & Co., Inc. (NYSE:MRK)

P/E Ratio: 11.85 

Merck & Co., Inc. (NYSE:MRK), a global biopharmaceutical leader headquartered in Rahway, New Jersey, is renowned for its innovation in oncology, vaccines, and specialty medicines.

In June 2025, the FDA approved KEYTRUDA for perioperative use in adults with resectable, locally advanced head and neck squamous cell carcinoma (HNSCC) expressing PD-L1 (CPS ≥1). This marks the first approval of an anti-PD-1 therapy in the perioperative setting, allowing use both before and after surgery, combined with radiotherapy and as a standalone treatment. This milestone supports the company’s strategy to move immunotherapy into earlier stages of cancer care.

Merck & Co., Inc. (NYSE:MRK) is also expanding its oncology pipeline, sharing promising updates on KRAS G12C inhibitor MK-1084, zilovertamab vedotin, and sacituzumab tirumotecan, as well as new analyses of KEYTRUDA across over 25 cancer types.

To meet growing demand and support biologics innovation, Merck & Co., Inc. (NYSE:MRK) began construction of a $1 billion Biologics Center of Excellence in Wilmington, Delaware, in April 2025. The 470,000-square-foot facility will focus on next-gen biologics and serve as the U.S. manufacturing hub for KEYTRUDA, bolstering supply chain resilience and production capacity.