LIG Defense & Aerospace Co., Ltd. (KRX:079550) has one of the longest order books in Korean industry. At the second quarter of 2026 the backlog stood at roughly ₩23.5tn — about 5.7 years of sales at the current revenue run rate. For a company that recorded ₩4,306.9bn of revenue in FY2025, that is visibility almost no manufacturer enjoys.
It has not translated into a predictable profit margin.
In the fourth quarter of 2025 the company earned ₩38.7bn of operating income on ₩1,404.8bn of revenue — a 2.8% margin, with a pretax loss of ₩16.1bn and net income of essentially zero. In the first quarter of 2026 it earned ₩171.1bn on ₩1,167.9bn, a 14.7% margin. In the second quarter, ₩105.7bn on ₩1,110.1bn, or 9.5%.
Three consecutive quarters, three completely different companies.
Zoom out and the recent volatility looks less like noise and more like a business that has never had a stable margin.
Operating margin by year: 5.3% in FY2021, 8.1% in FY2022, 8.1% in FY2023, 6.8% in FY2024, 7.4% in FY2025. Then 12.2% across the first half of 2026.
Revenue over the same period nearly doubled: ₩1,822.2bn in FY2021 to ₩4,306.9bn in FY2025, with first-half 2026 at ₩2,278.0bn, up 22.9% year on year. So the company scaled sharply while its margin stayed in a narrow band around 7%, and has only now stepped up.
The gross line shows where the step came from. Gross margin ran 15.0% in FY2023, 13.8% in FY2024 and 15.4% in FY2025. In the first half of 2026 it was about 21%. Six points of gross margin appearing in two quarters, at a company delivering contracts signed years earlier, is a mix effect rather than an efficiency one.
The most likely explanation is the one the industry has been discussing for two years. Domestic Korean defence procurement is priced on a cost-plus basis with a regulated margin. Export contracts are not. A missile system sold to a foreign government at a negotiated price carries margins that domestic work legally cannot.
LIG's export position has grown quickly. The Cheongung II surface-to-air system won a contract with Iraq in 2024 worth roughly $2.8bn, among the largest single defence exports in Korean history. The same system, sold to the United Arab Emirates, has been reported to have intercepted an Iranian missile in combat — the sort of validation no marketing budget can buy, and rare for any non-Western weapon system. In April 2026 the company signed its first export deal for the K-SAAM ship-defence missile, with Malaysia. Exports are projected to grow about 63% this year.
As export deliveries take a larger share of revenue recognized, the blended margin rises. That is the bull case in one sentence, and the first-half numbers are consistent with it.
The problem is that the same mechanism explains the fourth quarter of 2025 in reverse, and neither the filings nor the disclosure tell you which contracts sat in which quarter. A 2.8% margin quarter, immediately before a 14.7% one, suggests something more specific than mix — a cost true-up, a contract loss provision, or a delivery slipping across the year-end boundary. Cost of revenue in that quarter was 88.2% of sales against an 84.6% full-year average. The company has not, as far as I can find, explained it.
One line moving the wrong way. Selling, general and administrative expense was ₩229.2bn in FY2024, 7.0% of revenue. In FY2025 it was ₩343.3bn, or 8.0%. Across the first half of 2026 it ran about 8.8%.
Some of that is the cost of becoming an exporter: overseas offices, bid teams, offset obligation management, and the certification work that selling to foreign militaries demands. Some is the investment in satellites, unmanned platforms and next-generation aerial weapons that the March 2026 name change from LIG Nex1 to LIG Defense & Aerospace was meant to signal.
Both are defensible. Neither is free, and a company adding overhead at 1.8 points of revenue over two years needs the gross margin step to stick.
The June capital raising filing gives a clean price anchor. The pricing formula set a common reference price of ₩815,252, derived from one-month, one-week and latest-day weighted averages as of late June. On 22,000,000 common shares that implies roughly ₩17.9tn of market value.
Against equity of ₩1,640.6bn at 30 June, that is about eleven times book. Against trailing four-quarter net income of roughly ₩267.7bn — dragged down by the near-zero fourth quarter of 2025 — it is above 60 times. Annualize the first half's ₩213.6bn and the multiple falls to the low 40s.
Those are growth-company multiples on a defence contractor. They can be justified if the margin step is permanent and the ₩23.5tn backlog converts at first-half rates. They leave nothing for a repeat of the fourth quarter of 2025.
The strongest argument for the bulls is that the export mix shift is not a quarter-to-quarter accident but a multi-year transition that has only just begun to hit the income statement. Contracts signed in 2023 and 2024 are entering their peak delivery years now. If exports grow 63% this year and continue at anything like that pace, the higher-margin share of revenue rises mechanically for several years, and 12% is a waypoint rather than a peak.
There is also a scale argument. Fixed development and facility costs get spread across a revenue base that nearly doubled in four years, and the ₩500bn facility investment programme funded in June is aimed at exactly that. Korean defence peers have shown the same pattern — the sector's four largest names collectively passed ₩1tn of quarterly operating profit for four consecutive quarters through early 2026.
And a 5.7-year backlog genuinely does remove the demand question. Whatever else is uncertain here, it is not whether there will be revenue.
The third-quarter operating margin. Two data points define the range: 2.8% and 14.7%. A third quarter between 10% and 13% would establish the first half as representative. Anything below 8% would mean the margin still swings with individual contract timing, and the multiple is being paid for an average the company cannot yet deliver reliably.
Second, whether the company explains the fourth quarter of 2025. A one-off provision that has been taken and closed is very different from a cost overrun on a programme still in delivery. The annual report should say which.
Third, the export share of revenue as disclosed at the third quarter. If it has risen in line with the margin, the causal story holds. If margin rose while export share did not, the improvement is coming from somewhere the company has not identified — and unexplained margin is the kind that reverses.
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