Defense demand is strong, but trust still matters
- Ducommun is a behind-the-scenes supplier to aerospace and defense primes, where failure can be very costly.
- Aerospace and defense made up 96% of 2025 net revenue, so the company now lives mostly on those programs.
- Q1 2026 remaining performance obligations were $1,073.7 million, with about 70% expected as revenue in the next 12 months.
- Missiles are the main growth story, with the missile business up 22% in Q1 2026 and management saying Tomahawk could grow at least 8x.
- The hard parts are commercial aerospace destocking, Boeing exposure, a 10% global tariff, debt, and a financial reporting restatement.
Missiles help, cleanup hurts
Ducommun is in a good place in the defense supply chain. It makes engineered parts and electronics for programs where quality matters more than cheap volume. Q1 2026 remaining performance obligations were $1,073.7 million, which gives the company real backlog visibility.
The bull case is led by missiles, radar, and electronic warfare. In Q1 2026, the missile business grew 22%. Management said missiles, radar, and electronic warfare were about 33% of last 12-month defense revenue and more than 19% of total Ducommun revenue. Management also said Tomahawk could grow at least 8x from its current base.
There is a margin story too. Ducommun has been closing and combining facilities, and management sees better margins as those moves ramp in 2026. The company is also shifting toward higher-margin engineered products and aftermarket work, which reached 23% of revenue in 2024.
The bear case is not gone. Commercial aerospace destocking is still expected to hurt the remaining three quarters of 2026. Boeing is a large customer, and any delay in 737 MAX production recovery would matter. A new 10% global tariff and a restatement tied to internal control weakness make the stock harder to trust, especially if the market already gives it credit for the defense ramp.
Paid for hard parts
Ducommun gets paid to design, engineer, and manufacture parts that customers do not want to build alone. Most of its work goes into aerospace and defense systems, including aircraft structures, missile parts, radar electronics, and wiring.
The company works through two segments. Electronic Systems makes high-reliability electronics and electromechanical assemblies. Structural Systems makes complex aircraft structures, composite parts, metal bonded parts, and assemblies for commercial and military platforms.
This is not a simple parts catalog business. Many contracts use customer designs and strict quality rules. That can make Ducommun sticky once it wins a place on a platform, but it also means mistakes, production delays, or cost overruns can hit margins.
The model breaks if large customers slow orders, if tariffs cannot be passed through, or if contract cost estimates prove wrong. The internal control weakness and restatement add another layer of risk because investors need clean numbers to judge whether the margin plan is working.
What Ducommun builds
Missile systems
Missiles are the core growth engine. The missile business grew 22% in Q1 2026, and management said Tomahawk could grow at least 8x.
Radar and electronic warfare
Ducommun makes high-reliability electronics for radar and defense electronics. Management has highlighted the SPY-6 radar circuit card as tracking over $10 million of revenue for one circuit card assembly in 2024.
Commercial aerospace structures
Ducommun supplies aircraft structures and has added content on the 737 MAX and 787. Management said Ducommun has $150,000 per shipset content on the 787 platform.
Defense aircraft parts
The Apache tail rotor blade is now in full production at Coxsackie, New York. This helps show that delayed production transfers can become real revenue once approvals are complete.
Patriot missile cabling
Ducommun expanded its European defense reach with a more than $40 million cabling assembly order for the Patriot PAC-2 missile. This adds another path beyond its U.S. defense base.
Medical and industrial work
Medical and industrial work is smaller than aerospace and defense. Management continues to prune non-core industrial work as it pushes toward higher-margin engineered products.
Two operating engines
Segment mix is based on Q1 2026 net revenue from the April 4, 2026 Form 10-Q. Electronic Systems was about 56% of revenue and Structural Systems was about 44%, with customer concentration still important.
What can go wrong
Boeing and commercial aerospace stalls
High impact · Medium oddsBoeing was one of Ducommun's largest customers in 2025, and the 737 MAX was one of its highest commercial aerospace platforms. The FAA has cleared Boeing's plan to raise 737 MAX production from 38 to 42 airplanes per month, which helps. But if Boeing cannot meet quality requirements or production recovery slips, Ducommun's revenue and factory use could suffer.
Destocking lasts longer
Medium impact · High oddsManagement said Ducommun is not past commercial aerospace destocking yet. It expects some impact in the remaining three quarters of 2026. If customers keep burning inventory instead of placing new orders, growth could lag the defense story.
Tariffs pressure margins
Medium impact · Medium oddsA 10% global tariff went into effect on February 24, 2026, with possible pressure if it is extended or raised. Ducommun said profitability and cash flows could be hurt if it cannot claim exemptions or pass costs to customers. This matters because many contracts are fixed price.
Financial reporting trust gap
High impact · Medium oddsManagement identified a material weakness in internal control over financial reporting. The company also restated prior consolidated financial statements. This does not break the defense demand story, but it raises the burden of proof on execution and reported margins.
Defense program timing changes
Medium impact · Medium oddsDucommun benefits from strong missile, radar, and electronic warfare demand, but defense work depends on budgets, awards, and production schedules. A program review, delay, or change in priorities could slow the ramp. The company is a supplier, not the prime contractor, so it has less control over timing.
In one breath
What does Ducommun do?
Ducommun designs and manufactures electronics, aircraft structures, missile parts, cabling, and other engineered components. Most of its work serves aerospace and defense customers.
Why are investors focused on missiles?
Missiles are growing faster than the rest of the company. In Q1 2026, the missile business grew 22%, and management said Tomahawk could grow at least 8x.
What is the biggest risk for DCO stock?
The biggest risks are execution and trust. Ducommun must turn defense backlog into profitable revenue while handling commercial aerospace destocking, Boeing exposure, tariffs, debt, and the internal control weakness.