Pfizer Inc. is an American multinational pharmaceutical and biotechnology corporation headquartered at The Spiral in Manhattan, New York City. Founded in 1849 in New York by German entrepreneurs Charles Pfizer and Charles F. Erhart, Pfizer is one of the oldest pharmaceutical companies in North America. Pfizer develops and produces medicines and vaccines for immunology, oncology, cardiology, endocrinology, and neurology. The company's largest products by sales are the Pfizer–BioNTech COVID-19 vaccine, apixaban, a pneumococcal conjugate vaccine, palbociclib, and tafamidis. In 2023, 46% of the company's revenues came from the United States, 6% came from Japan, and 48% came from other countries. Pfizer has been a publicly traded company for nearly a century, making its debut on the New York Stock Exchange in 1942 under the ticker symbol PFE. Since then, its stock has seen ups and downs, influenced by new drug launches, regulatory shifts, and changing market demand for its medicines and vaccines. Wikipedia