Transdigm Group Incorporated (TDG) Stock Price & How to Invest

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.

As of October 2026, TransDigm generates trailing revenue of about $10.0 billion and net income of about $1.9 billion, on an operating margin near 46% and EBITDA of roughly $5.1 billion. Its fiscal Q3 2026 (the quarter ended June 27, 2026) brought revenue of about $2.74 billion, up roughly 22.5% year over year, and adjusted EPS of $10.87 against a consensus near $10.28, the fourth straight quarter ahead of estimates. The stock has not followed the results: it closed near $1,144 on October 16, 2026, down about 16% year to date and about 8% over one year, near the bottom of a 52-week range of roughly $1,071 to $1,463. In mid-October Morgan Stanley, RBC, Deutsche Bank and Goldman Sachs all lowered their price targets, although the average analyst target of about $1,419 (20 analysts, buy on average) remains above the share price. Fiscal Q4 results are expected around November 5, 2026, with consensus EPS near $12.22 on revenue of about $2.95 billion.

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.

20 analysts publish price targets on TDG, averaging $1419.30 against a $1139.34 price as of October 2026, or +24.6%. The published targets run from $1100.00 to $1745.00, a moderate spread, and the ratings split 12 buy, 11 hold, 0 sell. Over the last six months there have been 2 raises and 8 cuts among the published actions. A price target is what an analyst published on a date, not a prediction, and sell-side ratings skew positive across the whole market.

Read the full TDG forecast and price target for the target table, the recent rating actions by firm, and how the consensus has shifted.

We give no verdict on Transdigm Group Incorporated. Both cases are real, which is why the question is contested at all, so here is the strongest version of each.

The case for buying. High-margin proprietary aftermarket. Roughly half of TransDigm's revenue is aftermarket: selling replacement parts over an aircraft's multi-decade service life. The most optimistic published target, $1745.00, assumes this works close to its best case.

The case against. 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. The most pessimistic target, $1100.00, is roughly what TDG is worth if this bites instead.

Read the full bull and bear case on TDG, including what would have to change to break either one. Walnut is not an investment adviser.

No. Transdigm Group Incorporated (TDG) has not split its stock in the last 10 years. That is a statement about the window we check rather than about the company’s entire history, so an older split is possible. It also matters less than it once did: fractional shares mean a high price per share no longer keeps smaller investors out, which removed most of the practical reason to split.

A simple financial snapshot. These are approximations and refresh quarterly; for current figures see Transdigm Group Incorporated's investor relations page or your broker.

• 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
• P/E (trailing / forward): ~34.7x / ~23.5x
• Debt and cash: ~$33.5 billion debt, ~$2.8 billion cash (EV/EBITDA ~18x)
• Market cap: ~$64 billion (shares near $1,144 on Oct 16, 2026)
• Free cash flow (TTM): ~$1.5 billion

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.

If you want TDG exposure as part of a larger bundle rather than directly, these ETFs hold it meaningfully. Weights are approximate and refresh quarterly.

Other names that sit close to TDG: same theme, named as a direct competitor, or held beside it in the same funds. Each entry says which. Worth a look if you are thinking about diversification within a thesis rather than concentration on one ticker.

There are three common ways to get TDG exposure. Buy shares (or fractional shares) directly at any major broker. Hold an ETF that includes it (XAR, ITA), which spreads the position across many companies. Or build it into a focused thematic portfolio, so TDG sits alongside other stocks that express the same thesis.

Walnut takes the portfolio route. Describe a thesis where TDG fits (for example “AI infrastructure” or “dividend-growth large-caps”) and the AI proposes 5 to 6 constituents with target weights. You review the plan and fund it through your own broker when you're ready.

New to this? Start with how to invest in stocks, see how to analyze a stock with AI, or compare the best AI stock analyzers.

TransDigm (TDG) is a sole-source aerospace-parts compounder with roughly 50% EBITDA margins, a recurring aftermarket annuity, and a debt-funded acquisition model that throws off large special dividends. In a portfolio it behaves like a levered, premium-multiple quality name sensitive to air-traffic cycles and government pricing scrutiny, closest in profile to peer Heico. After a roughly 16% decline in 2026 the forward multiple has eased to about 23 times, though analysts have been trimming targets ahead of the fiscal Q4 report.

Whether TDG is worth buying today depends more on your time horizon and what you already hold than on any single call. We walk through valuation, what would have to go right, and the risks in is TDG a buy or a sell?, and where the stock could go from here in the TDG stock forecast.

For income investors, whether TDG pays a dividend and how the payout looks is covered in does TDG pay a dividend? And to weigh TDG against a peer, read the full side-by-side comparisons: TDG vs RTX and TDG vs HON.