Bank of America Corporation (BAC) vs Merck & Co., Inc. (MRK)

Bank of America Corporation is one of the largest U.S. financial institutions, with a $3.5 trillion balance sheet and the second-largest deposit market share in the country, underscoring its central role in the American economy. The company has preserved a strong position among domestic middle-market and retail customers while also maintaining a significant international presence, supported by the world’s fourth-largest trading operation and an investment banking business that consistently ranks among the top four in global league tables. Bank of America operates through four main segments: consumer banking, global wealth and investment management, global banking, and global markets.

Merck & Co., Inc. develops pharmaceutical products across multiple therapeutic areas, including cardiometabolic disorders, oncology, and infectious diseases. In cancer treatment, its immuno-oncology portfolio, led by Keytruda, represents a significant driver of total revenue. The company also maintains a strong vaccines business focused on preventing pediatric illnesses, alongside Gardasil for human papillomavirus. In addition, Merck markets animal health products. Geographically, 47% of the company’s sales come from its U.S. human health segment, which includes pharmaceuticals and vaccines.