Top Wide-Moat Stocks to Buy for Steady Long-Term Returns

An updated edition of the September 10, 2026 article. A wide moat describes companies with durable competitive advantages that shield them from rivals and support lasting profitability. Popularized by Warren Buffett, the term draws an analogy to a medieval castle protected by a broad moat — making it hard for competitors to breach or threaten the company's market position. Among the companies that are recognized for their wide moats are Taiwan Semiconductor Manufacturing Company Limited TSM, Texas Instruments Incorporated TXN, UnitedHealth Group Incorporated UNH and Lockheed Martin Corporation LMT.