Next-Gen Defense: 3 Stocks Riding the New Global Arms Race

Global military expenditure surged nearly 10% to $2.7 trillion, the fastest acceleration since the Cold War, signaling a sustained tailwind for defense contractors. L3Harris Technologies (LHX) posted strong Q2 2025 results with significant revenue and production gains, driven by strategic tech initiatives and integration, leading to a 30%+ YTD share increase. Kratos Defense & Security Solutions (KTOS) also reported robust earnings, benefiting from a 17% YOY revenue jump and a $13 billion pipeline, though its valuation has become stretched following a 160%+ YTD rally. Conversely, TransDigm Group (TDG) missed Q3 earnings due to commercial aerospace headwinds, but its defense revenue grew 13% YOY, presenting a potential buying opportunity despite recent share weakness.

Analysis

A significant secular tailwind is supporting the defense sector, evidenced by a nearly 10% increase in global military expenditure to $2.7 trillion, the fastest rate of growth since the Cold War. Within this environment, company-specific execution is creating divergent opportunities. L3Harris Technologies (LHX) has demonstrated strong performance, beating Q2 2025 analyst predictions for both earnings and revenue, driven by the successful integration of Aerojet Rocketdyne which has doubled production and deliveries. This operational success, along with strategic initiatives like its eVTOL partnership and a new defense satellite, has propelled its stock over 30% higher in 2025. In contrast, Kratos Defense & Security Solutions (KTOS) exhibits a high-growth, high-risk profile; while its 17% year-over-year revenue growth and a substantial $13 billion contract pipeline are impressive, its stock has rallied over 160% year-to-date, leading to a stretched valuation with a P/E ratio approaching 688. Meanwhile, TransDigm Group (TDG) presents a potential value case. The company missed fiscal Q3 earnings due to headwinds in its commercial aerospace segment, causing its shares to fall. However, its defense revenue grew a robust 13% year-over-year, and the firm generated $630 million in cash flow, suggesting a potential dislocation between its recent stock performance and the strength of its defense business.

Key Decisions for Investors

• For L3Harris (LHX), the combination of strong execution, successful M&A integration, and over 12% expected earnings growth supports its position as a core defense holding, although its 30% year-to-date gain has priced in much of the positive news.
• Investors considering Kratos (KTOS) must weigh its exceptional growth, evidenced by a $13 billion pipeline and raised guidance, against the significant valuation risk highlighted by its P/E ratio of nearly 688, making it prudent to await a more attractive entry point.
• TransDigm's (TDG) recent share price decline following a commercial-driven earnings miss, despite 13% growth in its defense segment, may present a compelling 'buy-the-dip' opportunity for investors with a long-term outlook who can tolerate near-term commercial aerospace weakness.
• Given the broad-based surge in defense spending, investors should assess relative value within the sector, recognizing that while momentum favors Kratos, fundamental strength supports L3Harris, and a potential value dislocation exists in TransDigm.