NOC vs RKLB: How Northrop Grumman 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: NOC 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. NOC 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 NOC 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.

Northrop Grumman is one of the largest US defense contractors, supplying advanced aerospace, defense, and security systems primarily to the US government and allied militaries. Its business is organized around four segments: Aeronautics Systems (military aircraft and the B-21 Raider stealth bomber), Space Systems (satellites, launch, and missile-defense and space sensors), Mission Systems (radars, electronic warfare, sensors, and networking), and Defense Systems (missiles, ammunition, and the ground-based strategic deterrent program modernizing US intercontinental ballistic missiles). Northrop is a leader in stealth aircraft, space systems, and strategic deterrence, holding key positions on programs that are central to long-term US defense priorities. Revenue is dominated by long-duration government contracts, providing visibility and a large multi-year backlog, though margins depend on program execution and the mix of fixed-price versus cost-plus work. As a prime contractor on strategic programs like the B-21 bomber and the Sentinel ICBM, Northrop is tied to defense-budget trends and great-power competition. Founded in 1939 (modern form from the 1994 Northrop-Grumman merger) and headquartered in Virginia, it is a large-cap defense and aerospace company that pays a growing dividend.

Full NOC 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.

• NOC drivers: Strategic franchise programs; Large backlog and revenue visibility.
• 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: Northrop depends heavily on the US government, so defense-budget cuts, continuing resolutions, or shifting priorities directly affect revenue. 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 NOC 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 NOC and RKLB guides.

NOC. Northrop trades at a valuation in line with large defense primes, reflecting backlog visibility, strategic-program leadership, and steady cash generation balanced against program-execution and budget risk. The multiple tends to expand during periods of rising defense budgets and geopolitical tension and compress when budget concerns or program charges weigh on sentiment. The dividend and buybacks support total return.

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): NOC shows revenue (ttm) ~$42 billion, operating margin ~10-11% (sensitive to program mix and charges), net income (ttm) ~$3.5-4 billion, eps (ttm) ~$25; RKLB shows revenue (ttm) ~$500 million, revenue growth Strong double-digit, gross margin Positive and improving, operating margin Negative (investing in Neutron).

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