Walmart has been named Yahoo Finance's Company of the Year, driven by strong sales, record earnings, and significant stock growth. The retailer has invested heavily in AI, same-day delivery, and grocery pricing to stay competitive. Walmart's shares have surged over 80% year-to-date, outpacing the S&P 500 and Dow Jones Industrial Average. E-commerce sales climbed 27% in its latest quarter. CEO Doug McMillon credits risk-taking and tech investments for the company's transformation. Walmart continues to outshine rivals like Target, maintaining its leadership in the retail sector.