Kratos Defense & Security (NASDAQ: KTOS) stock tumbled 6.3% through 12:30 p.m. ET Monday, its fourth straight day of losses on no obvious bad news. If you ask me, there's only one logical explanation for that: Kratos stock costs too much. Where to invest $1,000 right now? Our analyst team just revealed what they believe are the 10 best stocks to buy right now, when you join Stock Advisor. See the stocks » Image source: Kratos Defense. What Kratos does Kratos is one of the best-known producers of militar ...