Key Points Kratos stock sold off on no obvious, Kratos-specific news today. Investors may be worried about EU action in response to President Trump's Greenland threats. 10 stocks we like better than Kratos Defense & Security Solutions › Kratos Defense & Security (NASDAQ: KTOS) stock crashed 9% through 12:25 p.m. ET Wednesday. No one seems to know why this happened... But I have a theory. Image source: Getty Images. U.S. vs EU President Trump has been making noises about wanting to annex (purchas ...