HIGHBuilt-inProduct / Revenue mix
55%
aftermarket
“10-K Item 1: 'approximately 55% of our net sales in fiscal year 2025 were generated from the aftermarket'”
TDG · Concentration risk · 10-K extracted
Transdigm Group (TDG) concentration risks
Updated
The most significant concentration Transdigm Group discloses is aftermarket at 55%, classified HIGH by disclosed size. Below: the full set from the latest 10-K — verbatim quotes, filing references, and a synthesis of what these exposures mean together.
Model-generated analysis — not investment advice. Not a registered investment advisor. Past performance does not guarantee future results.
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Source: Transdigm Group’s SEC Form 10-K filed — view the filing on SEC EDGAR ↗
At a glance
Disclosed-size breakdown · 3 disclosed concentrations
HIGH1
MEDIUM2
LOW0
Disclosed concentrations
Each card carries a disclosed-size chip (HIGH / MEDIUM / LOW — how large the exposure is as a share of revenue, not how dangerous it is) and a nature tag: Built-in(the company’s own model, geography, or products) or Outside party (an external customer, supplier, or distributor it relies on).
MEDIUMOutside partyCustomer
40%
top ten customers
“10-K Item 1: 'Our top ten customers for fiscal year 2025 accounted for approximately 40% of our net sales.'”
MEDIUMBuilt-in & outside partyCustomer
defense market
“10-K Item 1: 'the defense market ... which generally account for approximately 35% to 40% of our annual net sales'”
TrendMatrix Research · concentration synthesis
What these concentrations mean together
updated 2026-06-24The company's concentration profile reflects a deliberate strategic mix across product type, customer base, and end market. The most prominent single exposure is the aftermarket channel, which generated approximately 55% of net sales in fiscal year 2025 — a high-share, structural concentration that is intentional: aftermarket demand is driven by fleet operators' maintenance needs rather than by new-platform wins, and carries higher margins and more predictable volumes than OEM sales. This structural tilt is a well-understood feature of the business model rather than a dependency that could be abruptly lost. Customer breadth is moderate. The top ten customers for fiscal year 2025 accounted for approximately 40% of net sales — a medium-share, dependency-character exposure, meaning results are influenced by the order patterns of a defined group of buyers, though no single name appears to dominate. The defense market adds a mixed-character overlay, generally accounting for approximately 35% to 40% of annual net sales — a medium-share exposure that combines structural (budget-driven procurement cycles) and dependency (program award timing) elements. Defense revenues tend to be more stable than commercial aerospace but are subject to shifts in government spending priorities and contract award timing. In aggregate, the profile is coherent: a high aftermarket share buffers the cyclicality of new-platform volumes, while moderate customer and defense-market concentrations add manageable but real exposure to procurement decisions outside the company's control.
For the engine’s reasoning on TDG’s current verdict — including which dimensions drove the score — see the per-dimension breakdown.
Industry peers · Aerospace & Defense
Peer concentration profile
| Symbol | Name | HIGH | MEDIUM | LOW | Total |
|---|---|---|---|---|---|
| TDG● | Transdigm Group Incorporated | 1 | 2 | 0 | 3 |
| AVAV | AeroVironment, Inc. | 1 | 1 | 2 | 4 |
| ACHR | Archer Aviation Inc. | 1 | 0 | 0 | 1 |
| AXON | Axon Enterprise, Inc. | 0 | 2 | 0 | 2 |
| AIR | AAR Corp. | 0 | 0 | 1 | 1 |
| ATRO | Astronics Corporation | 0 | 0 | 1 | 1 |
Concentration counts reflect items disclosed in each peer’s most recent 10-K; disclosed-size classification uses TrendMatrix’s internal 10-K extraction taxonomy.