Amazon vs. Walmart vs. Costco: Which Is the Smartest Buy for the Second Half of 2026?

The article compares three retail giants—Amazon, Walmart, and Costco—as investment options for the second half of 2026. While all three are solid long-term prospects, the author recommends Amazon as the smartest buy due to its lower valuation compared to peers, superior revenue growth, and ability to perform well in various economic environments through its e-commerce business and AWS cloud computing arm.