Apple Inc. (AAPL) vs Merck & Co., Inc. (MRK)

Apple Inc. is one of the world’s largest companies, offering a broad portfolio of hardware and software products for both consumers and businesses. The iPhone accounts for the majority of Apple’s revenue, while products such as the Mac, iPad, and Apple Watch are built around the iPhone as the centerpiece of a wide-reaching software ecosystem. Over time, Apple has expanded its offerings with new services and applications, including streaming video, subscription bundles, and augmented reality. The company designs its own software and semiconductors, while relying on manufacturing partners such as Foxconn and TSMC to produce its devices and chips. Slightly less than half of Apple’s sales are generated through its flagship retail stores, with most revenue coming indirectly through partnerships and distribution channels.

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.