Snap, Costco, and Goldman Sachs are some of today's stocks: Pro Market Movers May 24

Steve Jang of Kindred Ventures, Oliver Chen of Cowen, Richard Greenfield of LightShed Partners, Barton Crockett of Rosenblatt Securities, Casey Newton of Platformer News, Pete Najarian of MarketRebellion.com, Stephanie Link of Hightower Advisors, Josh Brown of Ritholtz Wealth Management, and Rob Sechan of NewEdge Capital Group on why they are buying, selling, or holding specific stocks and ETFs.