GD vs RTX: Which Is the Better Buy in 2026?
Last updated September 2026
Short answer
RTX is the larger of the two ($276.51B market cap): the incumbent the market prices for continued execution (26.12x forward earnings, beta 0.29). GD is the smaller challenger ($99.95B), cheaper on forward earnings (19.92x): more room to run, but more to prove. The real question is which set of drivers you believe, and whether owning one (or both) leaves you over-concentrated.
GD vs RTX: the tie-breaker metrics
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.
| Metric | GD | RTX | What it tells you |
|---|---|---|---|
| Market cap | $99.95B | $276.51B | Size. The larger name is the incumbent; the smaller has more room to grow and more to prove. |
| Forward P/E | 19.92 | 26.12 | Valuation on next year's expected earnings, the same yardstick for both. Lower is cheaper for that growth; higher means the market is paying up. |
| Trailing P/E | 22.53 | 36.12 | Valuation on the last 12 months. A big drop from trailing to forward means the market expects earnings to jump, so more growth is already in the price. |
| Beta | 0.33 | 0.29 | Volatility vs the market. Above 1 swings harder than the index; below 1 is steadier. Higher beta means bigger drawdowns to hold through. |
| Price vs 52-week range | 67% of range | 72% of range | Where today's price sits between the 52-week low and high. Near the high is momentum with less margin of safety; near the low is out of favor or a discount, depending on why. |
| Price / book | 3.72 | 4.17 | How much you pay over book value. Very high can signal an asset-light, high-return business or a rich price. |
Reading it: GD 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.
Before you buy: how GD and RTX affect your concentration
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. GD and RTX 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 GD and RTX 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.
What does General Dynamics (GD) do?
General Dynamics is one of the largest US aerospace and defense contractors, with a diversified portfolio spanning four main areas. Its Aerospace segment builds Gulfstream business jets, among the most prestigious in the world. Marine Systems builds nuclear-powered submarines and other naval vessels for the US Navy, including ballistic missile and attack submarines through its Electric Boat and Bath Iron Works yards. Combat Systems produces armored vehicles, including the Abrams tank and Stryker, plus munitions and weapons systems. Technologies provides IT services, communications, and mission systems to defense and government customers. General Dynamics makes money through long-term government contracts for shipbuilding, vehicles, and services, plus commercial Gulfstream jet sales. Headquartered in Reston, Virginia, the company benefits from large multi-year defense programs, a substantial backlog, and steady government demand. Its mix of defense and high-end business aviation gives it a balance of stable contracted revenue and cyclical premium jet sales.
What does RTX Corporation (RTX) do?
RTX Corporation (RTX), formerly Raytheon Technologies, is one of the world's largest aerospace and defense companies. It operates three businesses. Collins Aerospace supplies avionics, interiors, actuation, and other systems for commercial and military aircraft. Pratt & Whitney designs and manufactures jet engines for airliners (including the geared turbofan) and military aircraft, and earns substantial recurring revenue from servicing its large installed engine base. Raytheon, the defense segment, builds missiles, missile defense systems (including Patriot), radars, and other advanced defense electronics for the US military and allied governments.
GD vs RTX: how do they differ?
Both fit overlapping themes, but they are not interchangeable. The useful comparison is which set of drivers and risks you want exposure to.
- GD drivers: Submarine and naval programs; Gulfstream business jets.
- RTX drivers: Commercial aftermarket; Defense backlog and missiles.
Which fits which kind of investor
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: General Dynamics depends heavily on US government defense spending, which is subject to budget politics, continuing resolutions, and shifting priorities. For RTX, rTX faces program-execution risks, most visibly the Pratt & Whitney geared-turbofan powder-metal inspection issue that forced costly engine removals and weighed on cash.
GD or RTX: which should you pick?
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 GD if you believe its drivers more; RTX 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 GD and RTX guides.
GD vs RTX: the full fundamentals
GD. General Dynamics is valued as a stable, cash-generative defense prime with a large multi-year backlog plus a cyclical premium business jet franchise. Investors weigh the predictability of government contracts and a long dividend-growth record against the cyclicality of Gulfstream and execution risk in shipbuilding. The valuation reflects steady defense demand and consistent capital return.
RTX. RTX trades as a large, dividend-paying aerospace and defense blue chip valued on its huge backlog, recurring aftermarket revenue, and dual commercial-defense exposure rather than rapid growth. Its multiple reflects steady, cash-generative franchises balanced against program-execution risk like the geared-turbofan issue, with the dividend and backlog supporting the shares.
Headline figures (approximate, early 2026): GD shows revenue (ttm) ~$45 to 50 billion, operating margin ~low double digits percent, net income (ttm) ~$3.5 to 4 billion, order backlog ~$90 billion or more; RTX shows revenue (ttm) ~$80 billion, operating margin ~10-12%, backlog Very large (over $200 billion, commercial plus defense), net income (ttm) Several billion dollars.
The bottom line: GD vs RTX
GD and RTX 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 GD and RTX exposure against your real portfolio. It is not an investment adviser.
Wondering how GD or RTX fits the portfolio you already own? Walnut is an AI investing app that connects your brokerage read-only and answers questions like that about your actual holdings: overlap, concentration, and how each position tracks the S&P 500. Compare the best AI portfolio analyzers or see the best AI investing apps in 2026.
Investing in General Dynamics with AI
Connect the broker you already use and ask Walnut's AI how GD fits what you actually hold: whether you own it already through a fund, what it would do to your concentration, and how it has tracked the S&P 500. Read-only by default, and you approve anything before it reaches your broker.
FAQ
What is the difference between GD and RTX?
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General Dynamics is one of the largest US aerospace and defense contractors, with a diversified portfolio spanning four main areas. RTX Corporation (RTX), formerly Raytheon Technologies, is one of the world's largest aerospace and defense companies. They show up together because they share investment themes, but they are different businesses, so the better fit depends on which thesis you are expressing.
Is GD or RTX the better stock?
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Neither is universally better. RTX is the larger incumbent; GD is the smaller challenger and looks cheaper on forward earnings. Walnut is informational, not investment advice. Compare what each does, the tie-breaker metrics above, and the risks, then decide which fits your thesis and what you already own.
Which is cheaper, GD or RTX?
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On forward P/E (as of September 2026), GD trades at 19.92x and RTX at 26.12x, so GD is the cheaper of the two on next year's expected earnings. A lower multiple is not automatically the better buy: a richer valuation can be justified by faster growth, and a lower one can reflect real risk. Weigh the multiple against how fast each business is compounding.
Should you own both GD and RTX?
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Because they share themes, owning both concentrates you in that theme. That can be intentional (a focused bet) or accidental (less diversification than it looks). Walnut can show your combined exposure across both, and whether adding either over-concentrates you, before you buy.
What are the risks of GD vs RTX?
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GD: General Dynamics depends heavily on US government defense spending, which is subject to budget politics, continuing resolutions, and shifting priorities. Large shipbuilding and vehicle programs carry execution risk, including labor shortages, supply chain constraints, and cost overruns on fixed-price contracts. The Gulfstream business is cyclical and sensitive to economic conditions and high-end demand. Program delays, new-aircraft certification timing, and competition in business jets can affect results. Defense procurement is competitive, and losing a major program would be material. Margins can be pressured by inflation and labor costs in shipbuilding. As with all defense contractors, political and policy shifts add uncertainty to long-term planning. RTX: RTX faces program-execution risks, most visibly the Pratt & Whitney geared-turbofan powder-metal inspection issue that forced costly engine removals and weighed on cash. Defense contracts can carry fixed-price exposure, supply-chain and labor pressures, and dependence on government budgets and procurement timing. Commercial aerospace is cyclical and sensitive to airline health, fuel prices, and travel demand. Large pension, warranty, and regulatory liabilities add complexity, and the stock can be hit by single-program problems given its size. Geopolitical shifts cut both ways: they support defense demand but introduce export-control and policy risk. Margins depend on disciplined execution across many long-cycle programs.
Walnut is informational, not investment advice. This page is descriptive and not a recommendation to buy or sell GD or RTX; figures are approximate and dated (as of September 2026). Verify current data before investing.