Transdigm Group (TDG)
What the price implies
A reverse DCF: instead of guessing a fair value, it asks what growth today's price already assumes. How it works.
At a market value of $62.1B, Transdigm Group's free cash flow of $1.8B (fiscal 2025) would need to grow about 12% a year for the stock to be worth today's price. That is close to what the company has delivered over the last 9 years.
Assumes a 9% discount rate and 3% growth after year 10, on free cash flow (operating cash flow minus capital spending) from Transdigm Group's SEC filings. Change any assumption, or model revenue and margins instead, in the Modeling tab, or try your own numbers in the reverse DCF calculator.
Fundamental grade
Five factors scored 1 to 9 from TDG's latest numbers, weighted into one grade. It describes the business, not whether the stock is a buy.
Key numbers
Results from SEC filings
Fiscal years, from Transdigm Group's 10-K filings. The deep dive has 15+ years, quarters and every line.
| Fiscal year | 2021 | 2022 | 2023 | 2024 | 2025 |
|---|---|---|---|---|---|
| Revenue | $4.8B | $5.4B | $6.6B | $7.9B | $8.8B |
| Net income | $680M | $866M | $1.3B | $1.7B | $2.1B |
| Free cash flow | $808M | $829M | $1.2B | $1.9B | $1.8B |
| EPS (diluted) | $10.41 | $13.40 | $22.03 | $25.62 | $32.08 |
| Operating margin | 35.2% | 40.8% | 44.4% | 44.5% | 47.2% |
Where the revenue comes from
Revenue by segments, fiscal 2025.
Superinvestors who own TDG
From each investor's latest 13F filing (what a 13F shows). 9 of the investors we track hold it.
| Investor | Last quarter | Value | % of portfolio | Quarter |
|---|---|---|---|---|
| Mark Massey AltaRock Partners LP |
Trimmed | $1.2B | 27.5% | Q2 2026 |
| PRIMECAP Management PRIMECAP Management Co |
Held | $546M | 0.32% | Q2 2026 |
| C.T. Fitzpatrick Vulcan Value Partners |
Trimmed | $227M | 6.9% | Q2 2026 |
| Dan Loeb Third Point LLC |
Added | $105M | 2.3% | Q2 2026 |
| Ron Baron Baron Capital (BAMCO) |
Trimmed | $105M | 0.16% | Q2 2026 |
| Joel Greenblatt Gotham Asset Management |
Added | $52M | 0.12% | Q2 2026 |
| Stephen Mandel Lone Pine Capital |
Trimmed | $38M | 0.23% | Q2 2026 |
| Bryan Lawrence Oakcliff Capital Partners |
Held | $32M | 12.0% | Q2 2026 |
| Cliff Asness AQR Capital Management |
Added | $28M | 0.01% | Q2 2026 |
Insider buying
Open-market purchases by Transdigm Group's executives and directors in the last 12 months, from SEC Form 4 filings. What insider buying tells you.
| Date | Insider | Shares | Price | Value |
|---|---|---|---|---|
| Mar 16, 2026 | Gilbert Ray Cisneros, Jr. |
0 | $1,247.63 | — |
| Mar 16, 2026 | Gilbert Ray Cisneros, Jr. |
0 | $1,247.63 | — |
| Mar 16, 2026 | Gilbert Ray Cisneros, Jr. |
0 | $1,247.63 | — |
| Feb 25, 2026 | Robert J Small |
1 | $1,285.00 | $1,285 |
| Feb 6, 2026 | Michael Lisman |
950 | $1,284.26 | $1M |
| Jan 30, 2026 | Gilbert Ray Cisneros, Jr. |
0 | $1,429.40 | — |
| Jan 30, 2026 | Gilbert Ray Cisneros, Jr. |
0 | $1,429.40 | — |
| Jan 30, 2026 | Gilbert Ray Cisneros, Jr. |
0 | $1,429.40 | — |
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In the full deep dive
Questions
What growth does Transdigm Group's stock price imply?
At a market value of $62.1B, Transdigm Group would need its free cash flow to grow about 12% a year for 10 years (discounted at 9%, 3% growth after that) to be worth today's price. Over the last 9 years its free cash flow grew 12% a year.
Are Transdigm Group insiders buying the stock?
8 open-market insider purchases of TDG in the last 12 months, from SEC Form 4 filings.
Which superinvestors own Transdigm Group?
9 of the superinvestors Investingly tracks hold TDG in their latest 13F, including Mark Massey, PRIMECAP Management, C.T. Fitzpatrick.
Prices and ratios as of Oct 7, 2026; statements from SEC filings. Information only, not investment advice. Superinvestor holdings come from 13F filings, which are filed up to 45 days after each quarter ends.