Retail sales fall more than 16% in April. Uber and GrubHub explore a possible merger. Marriott and Under Armour tumble on disappointing earnings. Diagnostics company Quidel gets a big boost from the FDA. And DraftKings hits a new high. Motley Fool analysts Ron Gross and Jason Moser discuss those stories and weigh in on the best way to build a portfolio. Our analysts share a couple of stocks on their radar: Intellia Therapeutics and Axon Enterprise. Plus, Camping World CEO Marcus Lemonis talks about the business of RVs and shares some insights from his CNBC show, The Profit. Thanks to Molekule for supporting our show.   Get 10% off your first air purifier at http://www.molekule.com with code “fool10”.