Take this drop as an opportunity to buy Cognex stock. Shares of Cognex (CGNX -22.51%) slumped this morning and were trading 21% lower as of 11:40 a.m. ET. Cognex is a world leader in machine vision systems and solutions used to automate manufacturing and distribution processes. Therefore, it extensively uses technologies like artificial intelligence (AI). AI-driven businesses have tremendous growth potential, but things haven't been so easy for Cognex lately, as its latest numbers prove. Cognex reported a s ...