Stock prices for major global pharmaceutical companies—such as Pfizer, Merck, Eli Lilly, Johnson & Johnson, and Novartis—change continuously during active market trading hours across international exchanges. Because equity valuations shift second-by-second in response to quarterly earnings disclosures, clinical trial announcements, and macroeconomic interest rate trends, static figures become outdated instantly. Real-time quotes, daily trading ranges, and market capitalizations must be retrieved directly from verified financial platforms like Bloomberg, Yahoo Finance, or live brokerage portals.