DCO vs HXL: Which Is the Better Buy in 2026?

Same yardstick, side by side (as of September 2026). Valuation lined up like this is most meaningful for two names in the same corner of the market, which these are. Figures are approximate; verify before investing.

The metrics above tell you which is the marginally better business. The bigger risk for most people is not picking the slightly worse stock, it is over-concentrating. DCO and HXL share themes, so owning both, or adding either to what you already hold, can quietly push a large share of your portfolio into one bet.

This is the part a generic comparison page cannot answer, because it depends on what you own. Connect your brokerage and Walnut shows your real, combined DCO and HXL exposure, flags overlap with your existing positions, and tells you if adding one would tip you past a concentration you are comfortable with, read-only by default, with your login staying at your broker. Walnut is not an investment adviser.

Ducommun Incorporated is a Santa Ana, California supplier of engineered products and manufacturing services to aerospace and defense customers. It runs two segments. Electronic Systems, the larger one at roughly 58% of second-quarter 2026 revenue, makes circuit card assemblies, wire harnesses and cable, radar and microwave subsystems, and printed circuit boards for missiles, radar, avionics and space hardware. Structural Systems makes metal and composite airframe structures, engine components and titanium parts. The company is one of the oldest continuously operating businesses in California, founded in 1849, and it sits a tier below the primes: it sells to Raytheon, Lockheed Martin, Boeing, Airbus, Northrop Grumman, Spirit AeroSystems and the engine makers rather than to governments or airlines directly. A deliberate shift over the past few years has been toward proprietary engineered products and aftermarket work, which reached about 23% of revenue over the trailing year versus roughly 15% in 2022.

Full DCO guide

Hexcel is a leading maker of advanced composite materials, primarily carbon fiber and engineered composite structures used to make products lighter and stronger. Its core market is commercial aerospace, where its carbon fiber, reinforcement fabrics, resins, and honeycomb materials go into aircraft wings, fuselages, engine components, and interiors for planes like the Boeing 787 and Airbus A350 and A320 family. Hexcel also serves space and defense (missiles, satellites, military aircraft, rotorcraft) and select industrial markets such as wind energy and high-performance automotive. The company makes money by supplying these specialized materials, often qualified into specific aircraft programs over many years, which creates high switching costs and recurring demand tied to aircraft production rates. Because composites reduce weight and improve fuel efficiency, their content per aircraft has grown over successive generations of planes. Founded in 1948 and headquartered in Stamford, Connecticut, Hexcel is a focused, high-quality materials supplier closely tied to the commercial aerospace cycle.

Full HXL guide

Both fit overlapping themes, but they are not interchangeable. The useful comparison is which set of drivers and risks you want exposure to.

• DCO drivers: Missile and defense electronics demand; The commercial narrowbody rate ramp.
• HXL drivers: Rising composite content per aircraft; Commercial aerospace recovery.

A faster-growing, richer-valued name usually swings harder, so it suits a longer horizon and a higher tolerance for volatility; a steadier, more cash-generative business suits a more conservative or income-minded investor. The honest test is which set of risks you could hold through a drawdown: Program concentration is the structural risk: a handful of platforms (the 737 MAX, the A320, PAC-3, SM-6, the F-15) drive a large share of revenue, and Ducommun does not control the build rates on any of them. For HXL, hexcel is concentrated in commercial aerospace and dependent on Boeing and Airbus build rates, so any production slowdown, program delay, or downturn in air travel directly hurts demand.

Growth-minded investors who believe the theme has years to run tend to accept the richer multiple for more upside; value-minded investors lean toward the cheaper forward earnings and steadier profile. Pick DCO if you believe its drivers more; HXL if you believe its. Many investors hold both, but since they share themes, that is a concentrated bet, not diversification. Decide deliberately and check overlap. For the full detail, see the DCO and HXL guides.

DCO. Ducommun is priced like a defense electronics grower rather than a build-to-print machine shop, which is the whole argument of the mix shift. Trailing earnings-based multiples are high (in the 40s range) because GAAP net income is still small against a $3 billion market value, and the bull case rests on that gap closing as the 18% EBITDA target lands and engineered products pass a quarter of sales. Debt of about $276 million against roughly $40 million of cash is not a constraint at current EBITDA, but the valuation assumes the margin plan finishes on schedule.

HXL. Hexcel trades at a valuation that reflects its leverage to the commercial aerospace recovery, rising composite content per aircraft, and the operating leverage in its capital-intensive plants, balanced against significant customer concentration and aerospace cyclicality. The market prices in a multi-year build-rate ramp, so the multiple is sensitive to Boeing and Airbus production and can swing with aerospace sentiment.

Headline figures (approximate, August 2026): DCO shows revenue (ttm) ~$865 million, q2 2026 revenue ~$224.5 million, up ~12% year over year, gross margin (q2 2026) ~28.0%, a record, adjusted ebitda margin (q2 2026) ~17.1%, versus the ~18% Vision 2027 target; HXL shows revenue (ttm) ~$2 billion, operating margin ~14%, net income (ttm) ~$200 million, p/e (ttm) ~30x.

DCO and HXL are related but distinct: same themes, different businesses and risks. Neither wins in the abstract; the right pick is whichever thesis you actually believe, sized so you are not over-concentrated in one theme. Walnut can show your combined DCO and HXL exposure against your real portfolio. It is not an investment adviser.