HON vs TDG: Which Is the Better Buy in 2026?
Last updated October 2026
Short answer
HON (Honeywell International) and TDG (TransDigm Group) share investment themes but are different businesses. The right pick is whichever thesis you actually believe, sized so you are not over-concentrated in one theme.
HON vs TDG: the tie-breaker metrics
Same yardstick, side by side (as of October 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 | HON | TDG | What it tells you |
|---|---|---|---|
| Market cap | $67.00B | $63.73B | Size. The larger name is the incumbent; the smaller has more room to grow and more to prove. |
| Forward P/E | 21.54 | 23.42 | 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 | 7.80 | 34.56 | 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 | 0.89 | 0.94 | 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 | 24% of range | 17% 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. |
Before you buy: how HON and TDG 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. HON and TDG 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 HON and TDG 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 Honeywell International (HON) do?
Honeywell, which now operates as Honeywell Technologies (Nasdaq: HON), describes itself as a global, pure-play automation company serving the building, industrial and process sectors through services, solutions and products, run on its Accelerator operating system and its Forge intelligence layer. It has more than 50,000 employees and decades of operating data from a global installed base. Its Building Automation business sells controls, sensors, fire and security systems for commercial buildings. Industrial Automation covers process control, sensing, warehouse automation and the productivity (barcode scanning) business, and the process-technology franchise licenses refining and petrochemical technology and supplies the equipment and services around it, such as its planned role at the Dangote refinery project in Kenya. Honeywell makes money from a mix of equipment sales, long-cycle projects, recurring service and growing software offerings.
What does TransDigm Group (TDG) do?
TransDigm Group designs and manufactures highly engineered aerospace components used on commercial and military aircraft. Its business model is distinctive: it focuses on proprietary, sole-source parts (things like pumps, valves, actuators, ignition systems, cockpit controls, and specialized fasteners) where TransDigm is often the only approved supplier for a given aircraft. A large share of revenue comes from the aftermarket, selling replacement parts and spares over the decades-long service life of an aircraft, which carries very high margins and recurring demand. TransDigm grows through a disciplined acquisition strategy, buying niche aerospace-parts makers with similar proprietary, sole-source characteristics and then applying its playbook of value-based pricing and cost discipline. The company is known for a private-equity-style approach to capital allocation, high leverage, and large special dividends. Headquartered in Cleveland, Ohio, it serves commercial airlines, business jets, and defense customers worldwide.
HON vs TDG: 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.
- HON drivers: Pure-play automation focus; Software and physical AI on the installed base.
- TDG drivers: High-margin proprietary aftermarket; Acquisition-driven growth.
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: As a standalone automation company, Honeywell is more exposed to construction activity, manufacturing capex and energy-sector spending than when aerospace aftermarket revenue cushioned results. For TDG, transDigm carries very high debt, a deliberate part of its model, which raises interest costs and financial risk if cash flow weakens or rates stay elevated.
HON or TDG: which should you pick?
HON vs TDG: the full fundamentals
HON. Honeywell's headline numbers are hard to read because the June 2026 aerospace spin-off and a large Q2 gain sit inside the trailing figures, which is why the trailing P/E shows near 8x. On forward estimates the stock trades around 22x 2027 EPS of about $9.82, a multiple in line with quality automation peers. The Q3 report on October 22 (consensus EPS about $2.16 on revenue of about $5.0 billion) will give the first clean standalone quarter.
TDG. Figures are approximate as of October 16, 2026. TransDigm still trades at a premium, about 23.5 times forward earnings and 18 times EV/EBITDA, but less of one than at the start of 2026 after a roughly 16% decline. Consensus expects fiscal 2027 EPS near $48.65, up about 18%, while net debt above $30 billion keeps the stock sensitive to rates, air-traffic cycles and any erosion of pricing power.
Headline figures (approximate, October 2026): HON shows revenue (ttm, includes aerospace until june) ~$38.1 billion, q2 2026 revenue (continuing operations) ~$5.2 billion, 2026 revenue (analyst consensus) ~$20.2 billion, operating margin ~20%; TDG shows revenue (ttm) ~$10.0 billion, up ~22.5% YoY in the latest quarter, margins (ttm) ~60% gross, ~46% operating; EBITDA ~$5.1 billion, net income (ttm) ~$1.9 billion; trailing EPS ~$33, latest quarter (fiscal q3, ended jun 27, 2026) Revenue ~$2.74 billion; adjusted EPS $10.87 vs ~$10.28 expected.
The bottom line: HON vs TDG
HON and TDG 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 HON and TDG exposure against your real portfolio. It is not an investment adviser.
Wondering how HON or TDG 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 Honeywell International with AI
Connect the broker you already use and ask Walnut's AI how HON 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 HON and TDG?
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Honeywell, which now operates as Honeywell Technologies (Nasdaq: HON), describes itself as a global, pure-play automation company serving the building, industrial and process sectors through services, solutions and products, run on its Accelerator operating system and its Forge intelligence layer. TransDigm Group designs and manufactures highly engineered aerospace components used on commercial and military aircraft. 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 HON or TDG the better stock?
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Neither is universally better; they suit different views and risk levels. 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, HON or TDG?
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On forward P/E (as of October 2026), HON trades at 21.54x and TDG at 23.42x, so HON 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 HON and TDG?
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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 HON vs TDG?
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HON: As a standalone automation company, Honeywell is more exposed to construction activity, manufacturing capex and energy-sector spending than when aerospace aftermarket revenue cushioned results. Earnings are expected to fall sharply in reported terms in 2026 (consensus of about $8.30 of EPS versus far higher prior-year figures that included aerospace), and the separation adds execution risk: stranded costs, new capital structures and a limited standalone reporting history. Debt of about $35 billion against about $9.2 billion of cash (latest reported figures, which straddle the spin) leaves the balance sheet a watch point. The productivity solutions (warehouse and barcode) business has shown cyclical softness, and analysts have been trimming price targets (Mizuho cut its target to $255 from $265 in October). Input costs, supply chains and currency swings also affect margins. TDG: TransDigm carries very high debt, a deliberate part of its model, which raises interest costs and financial risk if cash flow weakens or rates stay elevated. Commercial aftermarket revenue is sensitive to air-traffic cycles; a downturn in flying (as in a recession or pandemic) cuts demand sharply. The company's aggressive pricing on sole-source parts has drawn government scrutiny, including Department of Defense reviews of pricing to the military, creating regulatory and reputational risk. Growth depends on continued availability of attractive acquisitions at reasonable prices. The stock often trades at a premium valuation, leaving it exposed to multiple compression if growth or margins disappoint, and high leverage amplifies downside in stress scenarios. The share price has de-rated in 2026 (down about 16% year to date as of October 16) even as earnings beat, and several brokers cut targets in October, so sentiment rather than reported results has been the recent drag.
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Walnut is informational, not investment advice. This page is descriptive and not a recommendation to buy or sell HON or TDG; figures are approximate and dated (as of October 2026). Verify current data before investing.