Snap Inc. shares are volatile in after-hours trade after the company missed earnings expectations. Stephanie Link from Hightower gives her instant reaction and analysis to the report. Plus, Avery Sheffield from VantagePoint says that high-flying growth names are in for a "reality check." She takes a closer look at market valuations. And, is it time to get cautious? Chris Toomey from Morgan Stanley Private Wealth Management outlines his strategy.