BA vs RKLB: How The Boeing Company and Rocket Lab Compare (2026)

Same yardstick, side by side (as of August 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: BA 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. BA and RKLB 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 BA and RKLB 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.

Boeing (BA) is one of the two dominant manufacturers of large commercial aircraft in the world and a major US defense, space, and security contractor. Its commercial airplanes division builds jets like the 737, 787, 777, and the in-development 777X, sold to airlines and lessors globally, generating revenue from aircraft deliveries and aftermarket services. Its defense, space and security division builds military aircraft, satellites, weapons systems, and space hardware for the US government and allies. A third segment, Global Services, provides maintenance, parts, modifications, and support for both commercial and military fleets, offering steadier, higher-margin recurring revenue. Boeing operates in a global duopoly with Airbus in large commercial jets, a market protected by enormous barriers to entry, multi-year order backlogs, and high switching costs. However, the company has faced years of difficulty: the 737 MAX grounding, production quality and safety issues, supply-chain strain, and significant losses and debt. Founded in 1916 and headquartered in Arlington, Virginia, Boeing is a large-cap industrial whose recovery hinges on stabilizing production and rebuilding trust.

Full BA guide

Rocket Lab (RKLB) is a space company that builds rockets and spacecraft and provides end-to-end space services. Its established business is the Electron, a small orbital launch vehicle that is one of the most frequently flown small rockets in the world, carrying satellites for commercial, government, and defense customers. Rocket Lab is developing Neutron, a larger, partly reusable medium-lift rocket intended to compete for bigger payloads and constellation deployments, directly targeting the market SpaceX dominates.

Full RKLB guide

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

• BA drivers: Commercial duopoly and backlog; Aftermarket services.
• RKLB drivers: Neutron medium-lift rocket; Space Systems growth.

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: Boeing has endured years of crises: the 737 MAX grounding after two fatal crashes, ongoing production-quality and safety incidents, regulatory scrutiny from the FAA, and supply-chain constraints, all of which have slowed deliveries and produced large losses. For RKLB, rocket Lab is not yet consistently profitable and invests heavily in Neutron, so cash burn and capital needs are real until that program generates revenue.

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 BA if you believe its drivers more; RKLB 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 BA and RKLB guides.

BA. Boeing is a turnaround story, so trailing earnings and P/E are not meaningful given recent losses. Investors value it on the duopoly franchise, the enormous backlog, and the potential for free cash flow to recover sharply as production stabilizes and deliveries ramp. The valuation reflects a wide range of outcomes and high execution risk rather than steady-state metrics.

RKLB. Rocket Lab trades as a high-growth space name valued on its Space Systems revenue and the future option value of Neutron rather than current profits. The premium price-to-sales multiple reflects the launch-plus-systems opportunity and defense tailwinds, balanced against losses and Neutron execution risk. Valuation is highly sensitive to Neutron milestones and launch cadence.

Headline figures (approximate, early 2026): BA shows revenue (ttm) ~$70-80 billion, operating margin Negative to thin (recovering from losses), earnings Losses in recent years; recovery expected as deliveries ramp, free cash flow Depressed/negative recently; key recovery metric; RKLB shows revenue (ttm) ~$500 million, revenue growth Strong double-digit, gross margin Positive and improving, operating margin Negative (investing in Neutron).

BA and RKLB 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 BA and RKLB exposure against your real portfolio. It is not an investment adviser.