The Motley Fool·2026-03-15 08:25Core Insights - The market is currently valuing Amazon more for its AI development rather than its retail e-commerce growth, despite e-commerce being its largest business segment [2] - Amazon holds a significant market share, accounting for nearly 40% of U.S. e-commerce, but faces increasing competition from other retailers enhancing their e-commerce capabilities [2] Amazon - Amazon's stock has experienced a decline following its latest earnings results, indicating market dissatisfaction [1] Walmart - Walmart is the second-largest retailer globally, with a strong focus on consistent growth and digital business expansion [4] - The company operates over 5,000 stores in the U.S., leveraging its extensive footprint to enhance business operations [5] - E-commerce sales for Walmart increased by 24% year over year in the 2026 fiscal fourth quarter, with a notable 27% rise in U.S. e-commerce [6] - Walmart+ membership program has seen a 15% year-over-year increase in membership income, with fast deliveries rising by 60% year over year [7] - Walmart is recognized as a dependable Dividend King, showcasing resilience and innovation for long-term investment [7] Costco - Costco's stock has regained market favor after reporting a 9.1% year-over-year sales increase for the 2026 fiscal second quarter [8] - Comparable sales for Costco rose by 7.4%, alleviating previous market concerns regarding growth amid inflation [8] - E-commerce has also been a significant growth driver for Costco, with digitally enabled sales increasing nearly 23% year over year [10] - Membership renewal rates remain high at nearly 90% globally, with a 4.8% increase in membership growth [11] - Costco's stock has risen by 16% this year, reflecting its resilience and value in the market [11]