HXL vs IRDM: How Hexcel and Iridium Communications Compare (2026)

Same yardstick, side by side (as of July 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.

Reading it: IRDM is the cheaper of the two on forward earnings, but cheaper is not the same as better. Pair the valuation with growth (how far the forward P/E sits below the trailing P/E) and risk (beta) before you decide.

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. HXL and IRDM 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 HXL and IRDM 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.

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

Iridium Communications operates a constellation of 66 active low-earth-orbit satellites (plus in-orbit spares) that provides voice and data coverage across the entire planet, including the poles and oceans where terrestrial and geostationary networks fall short. Revenue comes from recurring satellite service (about 72% of the total), plus equipment sales, engineering, and support. Commercial IoT and a long-running U.S. government airtime contract are the backbone of the subscriber base, which reached roughly 2.56 million billable subscribers in early 2026. The U.S. government generated about 29% of 2025 revenue.

Full IRDM guide

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

• HXL drivers: Rising composite content per aircraft; Commercial aerospace recovery.
• IRDM drivers: Pending Rocket Lab acquisition; Recurring service revenue and IoT.

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: 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. For IRDM, the dominant risk is deal risk: a pending acquisition can be delayed, repriced, or fail regulatory review, and the stock could fall back toward standalone value if the transaction breaks.

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 HXL if you believe its drivers more; IRDM 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 HXL and IRDM guides.

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.

IRDM. Iridium trades near the pending Rocket Lab deal value, with a market cap around $5.3 billion against roughly $875 million of annual revenue and about $440-490 million of EBITDA. Trailing valuation multiples (P/E near 50, EV/EBITDA around 16) look rich for a low-growth operator, which is part of why the market has anchored to the takeover terms. Net leverage of about 3.4 times EBITDA and roughly $1.76 billion of debt are relevant to the enterprise value.

Headline figures (approximate, early 2026): HXL shows revenue (ttm) ~$2 billion, operating margin ~14%, net income (ttm) ~$200 million, p/e (ttm) ~30x; IRDM shows revenue (2025 / ttm) ~$875M, q1 2026 revenue ~$219M (up ~2% YoY), service revenue share ~72% of total, 2026 oebitda guidance ~$480-490M.

HXL and IRDM 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 HXL and IRDM exposure against your real portfolio. It is not an investment adviser.