CNBC's Stock Pops & Drops From May 11

On CNBC's Stock Pops & Drops, Dan Nathan spoke about Stratasys, Ltd. SSYS. The stock gained 0.59 percent on Monday and Nathan advised the viewers who wish to buy it to define the risk because it struggled recently and there could be more downside. Steve Grasso would take some profits in Mobileye NV MBLY after it gained 1.66 percent on Monday. He is concerned that competition is going to increase for the company. Pete Najarian explained that an analyst questioned if the products of Etsy Inc ETSY are legitimate and the stock fell 8.19 percent. He added that it will have tough time recovering from the issue. Tim Seymour said that Zulily Inc ZU jumped 5.15 percent on speculations that Alibaba Group Holding Ltd BABA could increase its stake in the company.