Shares of Marriott International and Under Armour fall on disappointing (and unsurprising) 1st-quarter reports. Ron Gross analyzes both companies and shares why checking a company’s balance sheet is more important than usual. Plus, we dip into the Fool Mailbag and discuss Quidel’s 25% rise on emergency approval from the FDA on the company’s Covid-19 antigen test.   Thanks to Molekule for supporting our podcast.   Get 10% off your first air purifier at http://www.molekule.com with code fool10.