Major retailers — including Walmart, Target, Best Buy and Kohl's — have announced July sales of their own that take aim at Amazon's annual Prime Day. Why it matters: Amazon's sale has become a marquee mid-year event,

As Amazon revealed plans for the largest Prime Day event ever, a number of major retailers are following suit to rival Amazon's annual sale. Retail giants Walmart and Target both announced Monday their plans to host sales events overlapping with Amazon Prime Day.