🛒 Largest Retail Companies by Market Cap (NOV 2025) 🛍️ Retail is one of the most powerful engines of the global economy, and this list shows just how massive the biggest players have become. From supermarkets to tech-driven e-commerce giants, these companies shape how billions of people shop every day. 📦 At the top, Amazon stands in a league of its own with a market cap above $2.4 trillion, redefining convenience, logistics, cloud services, and global consumer behavior. Walmart and Costco con