**Costco Wholesale Corporation** is a multinational retail giant operating a chain of membership-only warehouse clubs. Founded in 1983 by James Sinegal and Jeffrey H. Brotman, Costco's business model focuses on offering high-quality products at significantly lower prices than traditional retailers. This is achieved through efficient supply chain management, bulk purchasing, and a no-frills warehouse environment[1][2]. **History and Evolution**: Initially, Costco targeted businesses, but it soon expanded to include individual consumers. The company's roots trace back to Price Club, founded in 1976, which was later merged into Costco. The Kirkland Signature brand, named after its former headquarters in Kirkland, Washington, is a key part of Costco's strategy, offering private-label products that rival national brands in quality[1][2]. **Key Achievements**: As of 2024, Costco is the world's largest retailer of beef, poultry, organic produce, and wine. It ranks as the third-largest retailer globally, with over $250 billion in annual sales. Notably, Costco has a remarkable customer and employee loyalty, with a 93% membership renewal rate in the U.S. and Canada and an employee turnover rate of just 8%[1][3]. **Current Status**: As of September 2025, Costco operates 914 warehouses worldwide, with a significant presence in North America. The company is publicly traded on Nasdaq under the ticker "COST" and is headquartered in Issaquah, Washington[1][2]. Institutional investors own over 70% of its shares, with The Vanguard Group being the largest shareholder[1]. **Notable Aspects**: Costco is recognized for its strong ethical foundation, codified in its Code of Ethics, which prioritizes customer satisfaction, employee care, and supplier respect. This ethical approach has contributed to its sustained success and financial performance, with compounded annual stock returns of 17% over three decades[3]. Additionally, Costco's innovative business