TransDigm Group Incorporated
TDG Industrials · Aerospace & DefenseFairly valued.
TransDigm's profits grew but negative equity and $29.29 billion of debt define its balance sheet.
The four readings.
What the filing actually says.
The forensic scores should be read together rather than one at a time. The Beneish M-Score is -2.314, which is below the -1.78 threshold and therefore not in the elevated manipulation-risk zone. This is a statistical screen built from accounting ratios, not a finding that the statements are accurate. The Altman Z-Score here is the Z double-prime variant at 0.78, which the label places in the distress zone. This model estimates distress risk from the balance sheet, and a reading in this zone reflects the company's capital structure, including its negative equity, rather than a prediction of default. The Piotroski F-Score is 7 of 9 computable signals, meaning seven of the checks that could be computed were met. The cash-flow comparison deserves a closer look. Operating cash flow divided by net income is 0.98 for fiscal 2025, close to one-to-one, but cash generation did not grow alongside reported earnings. The risk factors describe covenants in the senior secured credit facility and in the indentures governing the senior secured and senior subordinated notes, along with the Securitization Facility. Readers may want to look at the debt footnotes in the 10-K for maturities and swap coverage, which the excerpt does not include. The Simmonds acquisition was excluded from management's internal control assessment as of March 28, 2026, so readers may want to check whether the next annual filing reports on it. The legal proceedings section states that management does not expect a material adverse effect from ordinary-course claims and points to Note 13 for detail.
Catalyst.The filings show fiscal 2025 revenue of $8.83 billion, up 11.2% from $7.94 billion in fiscal 2024, with operating income rising from $3.53 billion to $4.17 billion. The MD&A excerpt, from the 10-Q for the quarter ended March 28, 2026, does not include a results discussion, so the segment and product drivers management cites are not visible here. The most concrete recent development in the excerpt is the Simmonds acquisition, completed in the quarter ended December 27, 2025 and still being integrated. In November 2025 the Board authorized an additional $5.0 billion in share repurchases, and the company repurchased 602,070 shares in the second quarter of fiscal 2026.
Hidden risk.The most material tension is the balance sheet. Total liabilities of $32.59 billion exceed total assets of $22.91 billion, and equity is negative $9.69 billion, compared with negative $6.29 billion a year earlier. Long-term debt rose from $24.39 billion to $29.29 billion, about 20% in one year. The risk factors say a significant portion of the variable-rate debt is tied to Term SOFR, so higher rates would increase debt service. Operating cash flow was flat at $2.04 billion while net income rose to $2.07 billion, and the top ten customers accounted for approximately 40% of fiscal 2025 net sales.
What traders are betting.
The metric
Shares that traders have borrowed and sold, betting the price will fall, and not yet bought back. Brokers report the total to FINRA twice a month. Days to cover divides it by the shares that change hands on a typical day.
- Shares sold short
- 1.2M
- Change since Aug 31
- +33.4%
- Days to cover
- 3.0
What it tells us
Few traders are betting against TDG. Levels this low are common for large, widely held companies.
Short sellers added to their bets: shares sold short grew 33.4% since the Aug 31 report.
At normal trading volume, short sellers would need about 3.0 days to buy back every borrowed share.
How investors use it
- Squeeze watching. Some aggressive traders seek out heavily shorted stocks, betting that good news will force short sellers to buy back shares and push the price higher.
- Hedging. Funds short one company to offset risk in another, often owning a stronger business and shorting a weaker one in the same industry.
- Timing. Chart-based traders pair rising short interest with price patterns, such as a break below a level where buyers used to step in, to decide when to enter or exit.
- Warning sign. Some owners treat a sharp rise in short interest as a red flag and respond by tightening stop-loss orders or holding smaller positions.
Quarterly reports
The quarterly reports (10-Q) and current reports (8-K) TransDigm Group filed in the last 12 months, each linked to the original document on SEC EDGAR.
- Sep 29, 20268-KCurrent reportItem 1.01: Signed a material agreement; Item 2.03: New debt or other financial obligationEDGAR →★ Curriculum-relevant
- Sep 28, 20268-KCurrent reportItem 8.01: Other events0EDGAR →
- Sep 21, 20268-KCurrent reportItem 8.01: Other events0EDGAR →
- Sep 14, 20268-KCurrent reportItem 7.01: Regulation FD disclosure (investor materials)0EDGAR →
- Sep 14, 20268-KCurrent reportItem 7.01: Regulation FD disclosure (investor materials)0EDGAR →
- Sep 14, 20268-KCurrent reportItem 7.01: Regulation FD disclosure (investor materials)0EDGAR →
- Aug 4, 202610-QQuarterly report0EDGAR →
- Aug 4, 20268-KCurrent reportItem 2.02: Results of operations (earnings)0EDGAR →
- Jul 27, 20268-KCurrent reportItem 8.01: Other events0EDGAR →
- Jul 24, 20268-KCurrent reportItem 5.02: Departure/appointment of officers or directorsEDGAR →★ Curriculum-relevant
- Jul 13, 20268-KCurrent reportItem 8.01: Other events0EDGAR →
- May 5, 202610-QQuarterly report (2026-03-28)Period: 2026-03-280EDGAR →
If this case caught your eye
Financial Shenanigans
Schilit's framework for the seven shenanigan types is the standard reference for the kind of MD&A pattern-matching this site does.
View on Amazon →The Interpretation of Financial Statements
The original — and still the clearest — explanation of why working-capital trends matter more than headline earnings.
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