What's the read on aerospace and defense, and which catalysts are people watching next?

The aerospace and defense sector is experiencing a dual-track expansion, driven by acute geopolitical demand and a robust commercial aviation cycle. Ongoing conflicts in Ukraine and Israel have significantly drained Western stockpiles of munitions and solid rocket motors, creating urgent demand for replenishment [1, 5]. In response, the Department of Defense is incentivizing contractors to use private capital to expand production capacity, while legacy primes like Lockheed Martin are making multi-billion dollar investments to quadruple output of key systems [12, 17, 25]. A primary near-term catalyst is an anticipated supplemental funding request of **$80-$200 billion** related to Iran, which is expected to be fast-tracked for munitions, counter-drone systems, and space assets, directly benefiting established contractors [18, 19, 21, 24]. This focus on consumables is also shifting industrial demand toward materials like aluminum and electronics over traditional steel .

On the commercial side, the aviation aftermarket is showing significant strength, providing a high-margin revenue stream for manufacturers . GE Aerospace reports that its year-over-year growth rate for spare parts orders has accelerated to **40%**, and engine removals for shop visits are outpacing its current service capacity [4, 7, 13]. This surge in maintenance, repair, and overhaul (MRO) activity serves as a leading indicator that airlines are prioritizing fleet availability to meet sustained high passenger volumes . This near-term services boom is backstopped by long-term production stability, with manufacturers reporting strong backlogs for both narrowbody and widebody aircraft extending **well into the 2030s** . The industry is also planning for the next major technology cycle, with the introduction of next-generation narrowbody aircraft and associated open-fan engine architecture anticipated in approximately **10 to 15 years** [15, 16, 23].

Concurrently, the defense industry is undergoing a structural shift characterized by the rise of venture-backed "neoprimes" and a government push for modernization [3, 27]. Companies like Anduril, SpaceX, and Palantir are disrupting the sector by integrating software, AI, and advanced manufacturing to deliver technology more rapidly and cost-effectively than legacy players [3, 26, 28]. This trend is reinforced by the Department of Defense's National Defense Industrial Strategy, which prioritizes flexible acquisition, resilient supply chains, and speed [2, 8]. In response, established contractors are adapting; Lockheed Martin, for example, is actively collaborating with startups as innovation partners and developing cheaper, layered defense systems to counter the cost asymmetry of modern threats like inexpensive drones . This dynamic suggests a more competitive and technologically fluid landscape is emerging, where both new entrants and adapting incumbents will shape future capabilities.