b'The Dow clawed back from a more than 500 point drop to close in the green, but a profit warning from Snap kept tech stocks suppressed. Analysts Michael Nathanson and Rohit Kulkarni discuss the huge drop for the social media firms and the read-through for the whole advertising market. Nancy Tengler from Laffer Tengler, Sandy Pomeroy from Neuberger Berman and Stephanie Link from Hightower open up their playbooks as the market volatility rolls on. And retail expert Gerald Storch explains why a revolution is needed in some of the country\\u2019s best-known retailers, as Abercrombie & Fitch becomes the latest name to tank on results.'