Target (TGT) and Walmart (WMT) begin competing sales events to take on Amazon's (AMZN) Prime Day. Ed Butowsky thinks both will trail AMZN, but says Walmart could have an edge on electronics because of the company's "huge balance sheet" and ability to cut prices. He looks at the subscriber count comparison, pointing to a huge margin between Amazon and Walmart. For Target, he says "people don't think about it as an ecommerce powerhouse" like AMZN or WMT. Ed adds that he likes Mercado Libre (MELI) calling it the Amazon of South America.