Defense spending of $1-1.5 trillion and rising NATO budgets are the theme of the decade, making Palantir, Lockheed Martin, RTX, Northrop Grumman and L3Harris the top five defense stocks to own. Palantir is the purest defense-AI play: Q4 revenue jumped 70%, free cash flow reached $2.27B, and a $448M Navy shipbuilding modernization contract shows its government pipeline accelerating. At 232 times earnings, it is priced as the operating system for modern warfare, not a contractor. x.comÂ