The Defence Trifecta: Three Ways to Play Australia's Biggest Spending Cycle
Three ASX defence stocks ride the same spending cycle but carry vastly different valuations. EOS trades 50% above our $2.41 fair value on unproven delivery scale. Austal is 17% over at $5.61. Codan at $34.69 is 64% above our $12.56 estimate.
Australia's defence budget is in a structural expansion that has no recent precedent. The 2024 National Defence Strategy set a path toward 2.4% of GDP, the AUKUS submarine agreement has committed hundreds of billions of dollars over decades, and sovereign manufacturing capability has become a bipartisan policy imperative. Every listed company with meaningful defence exposure has repriced on the back of this narrative. The question is whether the repricing is calibrated to the actual earnings power of each business, or whether the market has applied a uniform "defence premium" without distinguishing between companies at very different stages of the cycle.
Three ASX-listed companies sit at the intersection of this theme: Electro Optic Systems (EOS), a counter-drone and directed-energy specialist turning a $415 million backlog into revenue; Austal (ASB), Australia's newly-designated sovereign shipbuilder with a $17.7 billion contracted order book; and Codan (CDA), a technology manufacturer whose defence communications business is growing at over 60% annually while its gold detector segment benefits from an entirely different tailwind. The macro backdrop is identical for all three. The valuations are not. Our analysis values EOS at $2.41 per share against a market price of $4.78, Austal at $4.67 against $5.61, and Codan at $12.56 against $34.69. Those gaps range from 17% to 64%.
The defence spending cycle is real, but whether it has been priced correctly across all three stocks is the question this article addresses.
Scorecard
| Company | Rating | Price | Fair Value | Gap | Mgmt Credibility | Key Metric |
|---|---|---|---|---|---|---|
| EOS | Speculative / High Risk | $4.78 | $2.41 | -50% | 6.0/10 | $415m backlog; 4.7x delivery scale-up required |
| ASB | Fairly Valued / HOLD | $5.61 | $4.67 | -17% | 6.6/10 | $17.7B order book; Deloitte qualified auditor opinion |
| CDA | Overvalued | $34.69 | $12.56 | -64% | 8.0/10 | EBITDA margin 30.6%; market prices peak as permanent |
Fair values are point estimates from DCF analysis. All figures in AUD. Management credibility scores reflect our proprietary framework across guidance accuracy, strategic execution, tenure, and alignment.
EOS: Counter-Drone Backlog vs Delivery Scale-Up Risk
Electro Optic Systems designs and manufactures remote weapons systems (RWS), counter-drone platforms, and directed-energy laser weapons. The contract wins are genuinely impressive: the A$108 million Land 400-3 with the Australian Army, the world's first export order for a 100kW-class laser defence system at A$125 million, and $233 million in new orders over nine months to November 2025. The backlog reached $415 million by October 2025, three times higher than twelve months earlier. The central problem is not the order book but the scale of execution required to convert it: H1 2025 revenue was $44 million, meaning delivery needs to increase roughly 4.7x into FY2026-2027 across facilities (Singapore laser manufacturing, Canberra RWS) that are new or need substantial scaling. Management credibility at 6.0/10 reflects a team that wins contracts but has an acknowledged track record of delivery timing delays.
Our fair value is $2.41 per share against a market price of $4.78, a 50% gap. The balance sheet is a genuine strength: zero debt and $91.5 million in cash, meaning even our Bear scenario (30% probability, ~$1.40 per share) does not produce a liquidity crisis. But the risk-reward at $4.78 is unfavourable: our Base case implies roughly $2.24 and the downside scenarios are severe. At this price, EOS functions as a concentrated bet on FY2026 delivery execution rather than a diversified defence exposure. If EOS delivers FY2026 revenue in line with our Base case and demonstrates manufacturing scale, the stock re-rates and our fair value would require revision upward.
Austal: Sovereign Shipbuilder with a Deloitte Qualification
Austal builds ships for the US and Royal Australian navies and is positioning for AUKUS submarine infrastructure. The company's strategic position changed materially in August 2025 when it signed the Strategic Shipbuilding Agreement (SSA), designating it as Australia's sovereign shipbuilder for a generation of programmes including the $1.0 billion Landing Craft Medium (LCM) and $4.0 billion Landing Craft Heavy (LCH). H1 FY26 showed 34% revenue growth to $1.11 billion, EBIT of $60.3 million, and a record order book of $17.7 billion representing approximately eight years of revenue coverage. The complication is in the USA: Deloitte issued a qualified review conclusion over US$105 million in "variable consideration" recognised on the T-ATS and AFDM loss programmes, stating it could not obtain sufficient evidence to support management's judgement that this cost-overrun recovery from the US Navy is "highly probable." If the $105 million is not recovered, approximately A$158 million of revenue and provision reversal embedded in recent results is at risk.
Our fair value is $4.67 against a market price of $5.61, a 17% gap. The structural thesis (SSA designation, AUKUS positioning, contracted decade-long revenue) is not in dispute; what our analysis concludes is that the market has already priced it. The upside to our Bull scenario ($6.30) from current levels is 12%; the downside to our Bear scenario ($3.40) is 39%, an asymmetry that is unfavourable at $5.61. Value emerges below $4.50. The thesis-defining event is the LCM first estimate-at-completion review, expected at H2 FY27 results in February 2028: if LCM tracks to budget, fair value rises toward $5.50; if EAC overruns emerge as they did on T-ATS, the market would reprice toward $3.40.
Codan: Peak Margins on Two Simultaneous Cycles
Codan operates two segments with almost nothing in common except quality. Communications (56% of revenue) builds DTC tactical radio systems for military and unmanned systems applications, with the unmanned business growing 68% to $73 million in the half. Metal Detection (43%) is Minelab, the global leader in handheld gold detectors, where Africa delivered $95 million in a single six-month period compared to $115 million for all of FY25. The H1 FY26 result was outstanding: EBIT grew 52% to $99.8 million, EBITDA margin hit 30.6% (a post-acquisition high), and management credibility sits at 8.0/10 after three consecutive periods of at-or-above-guidance delivery. The business is conservatively capitalised at 0.4x net debt to EBITDA.
Our DCF fair value is $12.56 against a market price of $34.69, a 64% gap that is the largest in this trifecta. The gap reflects two specific judgements: we assess Minelab's 45.4% segment margin as a cyclical peak driven by gold-correlated Africa demand and model reversion toward 37-38%, and we treat DTC's unmanned systems growth (over $146 million annualised) as approximately 63% structural and 37% cyclical given conflict-zone revenue dependence. Even in our Bull scenario ($15.47, 20% probability), the stock is 55% above fundamental value. The market is implicitly using a discount rate closer to 4-5% or pricing sustained near-peak conditions on both cycles simultaneously, and at $34.69 an investor is effectively paying for the defence theme and the gold theme and a permanently elevated margin structure to all hold at once.
What the Three Together Tell You
The defence spending cycle is providing a genuine revenue tailwind for all three businesses. None of that is in dispute. What the combined analysis reveals is that the market has applied a single re-rating to companies with materially different risk profiles, at materially different stages of their delivery cycles.
Austal is the most straightforwardly "defence play" of the three: contracted revenues, a legal moat through the SSA, and decade-long visibility. Our analysis finds it is fairly priced to slightly overvalued, which means the market has done an adequate job of recognising the structural shift -- just not left much room for error. The Deloitte qualification is the overlooked risk.
EOS represents a genuine option on the counter-drone and directed-energy market, but at $4.78, the market is pricing an execution scenario that has not yet been demonstrated at scale. The $415 million backlog is real and contracted. The 4.7x delivery scale-up is not yet proven. That is not a reason to avoid the stock indefinitely -- it is a reason to demand a margin of safety that the current price does not provide. If EOS delivers FY2026 revenue in line with our Base case scenario and demonstrates manufacturing scale, the stock re-rates from a speculative position to a growth stock, and our $2.41 fair value would require revision upward.
Codan presents the sharpest contrast. The business is genuinely excellent -- high ROIC, conservative balance sheet, management with a strong track record. The issue is not quality; it is price. At $34.69, the market is asking investors to assume that peak-cycle conditions in both defence and gold simultaneously represent the new normal. Our analysis finds that even the most optimistic scenario ($15.47) cannot support the current price under a disciplined DCF framework. The implied discount rate required to justify $34.69 is approximately 4-5% -- a rate appropriate for government bonds, not a hardware business with gold price exposure and execution risk. The defence premium has been applied to Codan without adjustment for the non-defence segment, the cyclicality of Africa demand, or the normalisation of margins from a historically elevated base.
The broader portfolio lesson from this trifecta is straightforward: the macro tailwind is not equivalent to the investment return. A structural increase in Australian defence spending is likely to benefit EOS, Austal, and Codan over the coming decade. But the return available to investors depends on the gap between current price and fundamental value, not the gap between today's defence budget and yesterday's. Two of the three companies in this analysis are trading above fair value by material amounts. The defence theme is real. The premium embedded in these prices is, in at least two cases, too high.
Bottom Line
Austal is the most straightforwardly valued of the three -- the structural thesis is reflected in a price that sits modestly above our central estimate, with value emerging below $4.50. EOS offers genuine exposure to counter-drone and directed-energy technology, but at $4.78, the execution risk embedded in a 4.7x delivery scale-up is not adequately priced in our analysis. Codan is a high-quality business whose market price, at $34.69, assumes both cycles -- defence and gold -- remain permanently elevated. Our analysis values it at $12.56. The same macro tailwind is flowing through three very different valuations.
Analysis generated by the Alpha Insights AI research pipeline. All fair values are point estimates subject to model uncertainty. This is not financial advice. Do your own research before making investment decisions.