Defence Spending 2026: The NATO Rearmament Supercycle and the Transatlantic Conviction Hierarchy

The 2025 NATO Hague Summit produced the most consequential shift in European security financing since the original 2006 2% guideline. The new commitment — 5% of GDP by 2035, divided into 3.5% for core military expenditure and 1.5% for defence-adjacent spending including critical infrastructure, cyber, and resilience — represents not an aspiration but a binding political commitment backed by annual national plans with "credible, incremental paths" to the target.

The structural gap between today's spending levels and the 2035 target is enormous. In 2025, European NATO members collectively spent approximately 2.3% of their combined GDP on defence. Reaching 3.5% (let alone 5%) requires sustained multi-year budget increases across governments facing heterogeneous fiscal constraints. Germany — the most important market for Rheinmetall — has already committed to €117.2 billion in 2026 and €162 billion by 2029, having reformed its constitutional debt brake to exempt defence spending above 1% of GDP from fiscal limits. This reform effectively removes any legislative ceiling on German military procurement.

The Baltic states and Poland represent the most committed spenders by GDP percentage. Lithuania plans to allocate 5–6% of GDP to defence between 2026 and 2030. Poland already spends 4.48% of GDP. Estonia, Latvia, and Lithuania all exceed 3%. These countries — which share borders with Russia and Belarus — are driving the most urgent near-term procurement demand for ammunition, armoured vehicles, and air defence systems: precisely the products in which Rheinmetall has invested most aggressively.

The EU's €150 billion SAFE (Security Action for Europe) rearmament loan facility — established to allow member states to jointly borrow for defence procurement — is a second structural accelerant. SAFE enables fiscally constrained governments (France at 113% debt-to-GDP, Italy at 135%, Spain at 102%) to access lower borrowing costs for defence investment, effectively expanding the addressable market for European defence contractors beyond what sovereign balance sheets would otherwise permit. EU escape clauses excluding defence spending from deficit calculation rules further reduce the political cost of sustained military investment.

European rearmament is not a single procurement programme — it is a multi-decade restructuring of military capability across five interconnected categories. Each demand pillar creates a distinct set of revenue opportunities for European defence contractors, and understanding which companies are best positioned within each pillar is the starting point for portfolio construction.

The US defence industrial complex is the most structurally advantaged in the world. The four companies below collectively hold over $570 billion in order backlog, supply the most combat-proven systems operating in live conflicts, and are the primary beneficiaries of both rising US defence appropriations and European government procurement through the Foreign Military Sales (FMS) programme. Critically, FMS contracts allow allied nations to bypass domestic tariff complications and procurement timelines — making US defence companies the path of least resistance for European governments that need capability urgently.

The Trump administration’s proposed $1.5 trillion FY2027 defence budget — a roughly 40% increase over the current appropriation — reflects a defence-first agenda that shows no signs of reversal. Even if Congress appropriates only 60–70% of the proposed amount, it would represent one of the largest peacetime defence budget expansions in US history. For Lockheed Martin, the budget increase structurally de-risks the 2026 guidance range of $77.5–80 billion: both the PAC-3 multi-year framework (ramping from 600 to 2,000 interceptors annually) and the F-35 Lots 18-19 contract ($24 billion for up to 296 aircraft) are anchored to appropriations the administration has explicitly prioritised.

The conviction hierarchy below covers six major European defence equities. The primary screening framework uses three variables: (1) order backlog as a multiple of current revenue — a proxy for forward revenue certainty; (2) geographic diversification of the customer base — single-country exposure creates political risk; and (3) valuation relative to the sector forward P/E median of approximately 29×. Companies rated High Conviction clear all three screens; Constructive names clear the growth and quality screens but carry a fuller multiple or a single structural caveat; Selective names retain a compelling partial thesis but fail one or two screens on valuation or diversification. This July 2026 update raised two European names — Leonardo to Constructive and Thales from Monitor to Selective — on accelerating order momentum.

Backlogs tell you demand. They do not tell you who captures it. So we built a proprietary lens — the Rearmament Capture Rate: each prime's defence revenue as a share of its home region's defence-equipment budget (procurement + R&D). It is the defence analogue of the capture-rate metric that anchors our AI infrastructure work — and it exposes the single most under-discussed fact about this cycle.

US defence is a concentrated oligopoly; European defence is fragmented — and that asymmetry is the whole game. The United States channels a ~$309 billion equipment-and-R&D budget through just five primes: Lockheed Martin alone books revenue equal to roughly a quarter of it. Europe splits a smaller ~$180 billion equipment pool across a dozen national champions — Rheinmetall (Germany), BAE (UK), Leonardo (Italy), Thales (France), Saab (Sweden), Hensoldt, KNDS, Kongsberg, Nammo — with no continental prime and no name capturing more than ~10%.

Backlog is the number every defence bull quotes — and the one most likely to mislead. A backlog can be firm and fully funded, or it can be padded with commercial aerospace, unfunded awards, unexercised options, and management targets that have not been contracted at all. So our second signature lens grades each name's order book on how real it is: the Backlog Quality Index strips a headline backlog down to its quality core — funded, contracted, defence-relevant orders — and grades what remains.

The market ranks by backlog size. Ranked by backlog quality, the order flips. RTX carries the sector's largest headline book at $271B — but roughly 60% of it is cyclical commercial aerospace, not defence. Northrop's $95.6B is impressive until you read the fine print: only $44.1 billion is funded (the company discloses it). And Rheinmetall's widely-quoted "€135B" is a year-end target, not a contract — the real book is €73B. Measured by the quality core, it is Lockheed Martin, BAE Systems and L3Harris — near-fully-funded, defence-only books — that hold the most durable visibility.

The defence allocation framework below is designed for diversified European private portfolios with a 3–7 year investment horizon. Investors should establish an Investment Policy Statement to codify sector limits, ESG constraints, and currency hedging policy before initiating positions. A Black-Litterman allocation model can then formalise the conviction views below into mean-variance optimal weights, blending analyst views with market equilibrium to avoid overcrowded sector concentration. The framework distinguishes between a core position (high conviction, hold through volatility) and a satellite position (selective, entry-price sensitive). Investors with shorter horizons or lower risk tolerance should size the allocation toward the lower end of the ranges specified and express the thesis exclusively through BAE Systems, which offers the most defensive combination of growth visibility and valuation.

The total defence allocation for a diversified private portfolio — combining core (RHM + BAES) and satellite (LDO) positions — should sit in the range of 4–6% of total portfolio value. European investors with existing exposure to aerospace and dual-use technology (Airbus, Safran, Dassault) should reduce the defence allocation proportionally to avoid concentration in the European industrial sector. The allocation should be reviewed at each NATO summit cycle (the 2026 summit was held in Ankara, Turkey, in July, with national 5% roadmaps due mid-year) and at each major earnings release cycle for RHM and BAES.

Investors should model three scenarios for the position: (1) a base case — rearmament continues, order books are executed, and the sector re-rates modestly from current levels on earnings growth; (2) a bull case — conflict escalation or US defence budget withdrawal accelerates European procurement and drives multiple expansion; and (3) a bear case — a Ukraine ceasefire or Iran de-escalation compresses sector P/E multiples by 15–25% even as order books remain intact. The thesis survives the bear case on a 5-year horizon if order books are treated as real. The risk is in investors who entered with 12-month horizons and exit on peace headlines before earnings materialise. Quantify the probability-weighted return distribution across these three paths using the Monte Carlo simulation framework →

The defence thesis is straightforward to monitor. Five signals, updated each earnings and budget cycle, tell you whether the base case is intact, accelerating, or flashing an early bear-case warning. The single most important variable is the book-to-bill ratio across the coverage set — as long as orders keep landing faster than revenue is recognised, backlogs keep compounding and the multi-year visibility that anchors the thesis holds.

Enter your intended total defence allocation. The calculator distributes it across the four High Conviction anchors — LMT, RHM.DE, BAES.L, and GD — using A.L. Capital Advisory's Model Bridge weights. Two methods: Conviction-Weighted (proportional to model scores) or Equal-Weight (25% each).

A well-constructed investment thesis must include the conditions under which it is wrong. Five risks are material enough to affect the conviction hierarchy or position-sizing recommendations in this report. The first three are sector-wide; the remaining two are specific to US or European exposures. The matrix below plots them by likelihood and impact — the peace-scenario re-rating is the one to watch.

Cycle sensitivity — who has the most to gain from escalation, and the most to lose from peace. The peace scenario is the sector's binding risk, but it is not symmetric across names. We map two proprietary sensitivities: the Rearmament Beta (how levered a name's earnings are to rising defence budgets — a function of pure-play defence share, European exposure and operating leverage) against its Peace Vulnerability (the multiple de-rating we would expect in a credible ceasefire). The two move together — the names with the most torque to escalation carry the most exposure to de-escalation — which is exactly the trade-off a defence sleeve must be sized around.

Every material figure in this report is listed below with its primary source and the date it was verified. Live-search numbers were not trusted as-is: each was checked against the underlying budget document, government release, or company earnings statement.

Each name is scored out of 25 across five weighted criteria: Backlog & order visibility (30%), growth trajectory (20%), geographic & programme diversification (20%), valuation discipline (20%), and political / peace-scenario risk (10%). High Conviction requires ≥21.0; Constructive 18.0–20.9; Selective 15.0–17.9.