An updated edition of the July 31, 2025 article.The concept of a wide moat refers to companies that possess strong, lasting competitive advantages, which insulate them from competition and enable them to sustain long-term profitability. The term, popularized by Warren Buffett, likens a company’s market position to a medieval castle surrounded by a wide moat — difficult for rivals to cross and attack.Among the companies recognized for their wide moats, some are Microsoft Corporation (MSFT) , Johnson & Johnso ...