Parker-Hannifin Corporation (PH)
Parker-Hannifin makes motion-control and fluid-power components for industrial and aerospace machinery.
PH vs TDG: how the two businesses compare
- Bigger business: PH, with $19.9B of yearly revenue, about 2.2× TDG's $8.8B.
- More profitable: TDG keeps 23 cents of each sales dollar as profit, against 18 cents at PH.
- More cash from each sale: TDG turns 23 cents of each sales dollar into operating cash flow, against 19 cents at PH.
From each company's latest annual SEC filing. Fiscal years can end on different dates.
Parker-Hannifin (PH) is the larger business by reported revenue: $19.9B in its fiscal year ended Jun 2025, about 2.2× TDG's $8.8B (fiscal year ended Sep 2025). PH's net margin was 17.8% and TDG's 23.5%. The SEC classifies them differently (Miscellaneous Fabricated Metal Products; Aircraft Parts & Auxiliary Equipment, NEC); what connects them is shared exposure to the Wars & geopolitics research theme, not a common industry.
Figures come from each company's own SEC filings. This page compares the businesses; it is not a price target or a verdict.
- Industrials
- Different
- Separate classifications
- Different
- PH June 30 · TDG September 30
- Aug 21, 2026
PH vs TDG: quick comparison
| Company fact | PH | TDG |
|---|---|---|
| Company | Parker-Hannifin Corporation | TransDigm Group Incorporated |
| Exchange | NYSE | NYSE |
| SEC industry | Miscellaneous Fabricated Metal Products | Aircraft Parts & Auxiliary Equipment, NEC |
| Fiscal year-end | June 30 | September 30 |
| Latest annual filing | 10-K · 2026-08-21 | 10-K · 2025-11-12 |
PH vs TDG: audited financials
- Scale: PH's $19.9B of revenue is about 2.2× TDG's $8.8B.
- Net margin: TDG kept 23.5% of revenue as net income versus 17.8% at PH.
- Cash conversion: operating cash flow equalled PH 19.0% of revenue, or 1.07× net income; TDG 23.1% of revenue, or 0.98× net income. A ratio well above 1× usually reflects non-cash charges or working-capital release; well below 1× can reflect working-capital build or non-cash gains.
- Periods: the fiscal years end about 3 months apart (2025-06-30 for PH, 2025-09-30 for TDG), so each figure reflects somewhat different demand and cost conditions.
| Metric | PH | TDG |
|---|---|---|
| Revenue | $19.9B2024-07-01 to 2025-06-30 · SEC filing | $8.8B2024-10-01 to 2025-09-30 · SEC filing |
| Net income | $3.5B2024-07-01 to 2025-06-30 · SEC filing | $2.1B2024-10-01 to 2025-09-30 · SEC filing |
| Operating cash flow | $3.8B2024-07-01 to 2025-06-30 · SEC filing | $2.0B2024-10-01 to 2025-09-30 · SEC filing |
| Diluted EPS | $27.122024-07-01 to 2025-06-30 · SEC filing | $32.082024-10-01 to 2025-09-30 · SEC filing |
| Net margin | 17.8%2024-07-01 to 2025-06-30 · SEC filing | 23.5%2024-10-01 to 2025-09-30 · SEC filing |
PH: FY ending 2025-06-30 · TDG: FY ending 2025-09-30. Figures as tagged in each issuer's SEC XBRL filing; fiscal calendars may not align.
Where PH and TDG overlap, and where they don't
Overlap
- Shared research theme: Wars & geopolitics.
Differences
- Different SEC industries: PH files as Miscellaneous Fabricated Metal Products; TDG as Aircraft Parts & Auxiliary Equipment, NEC.
- Offset fiscal calendars: PH's year ends June 30 and TDG's September 30, about 3 months apart.
- Scale: PH reported about 2.2× the annual revenue of TDG.
- Profitability: net margin of 17.8% for PH versus 23.5% for TDG.
Overlap is drawn from SEC classifications and Yield Theory research themes. It is not evidence that the companies sell to the same customers or compete product for product.
TransDigm Group Incorporated (TDG)
TransDigm makes proprietary aerospace components used on commercial and military aircraft.
What moves each company
Company-specific drivers maintained by Yield Theory. Use them to decide which filing deserves deeper work; they are not predictions.
What moves PH
We have not yet published a company-specific driver list for PH. The primary source is Item 1 (Business) and Item 1A (Risk Factors) of its 10-K filed 2026-08-21.
What moves TDG
We have not yet published a company-specific driver list for TDG. The primary source is Item 1 (Business) and Item 1A (Risk Factors) of its 10-K filed 2025-11-12.
The investment question
You now know PH reports about 2.2× TDG's revenue, and TDG keeps more of each dollar as net income. Those are the facts. The investment question is what each share price already assumes about their exposure to wars & geopolitics, and which evidence in the next filings would prove that assumption wrong.
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Read the full researchSEC filing comparison and disclosure evidence
Start with primary filings because fiscal calendars and accounting presentation can make superficially similar quarters incomparable. PH's fiscal year ends June 30, while TDG's ends September 30. Normalize the reporting periods before comparing growth, margins, capital intensity, or guidance.
The current verified House and Senate snapshot contains 24 matched transaction rows for PH and 28 matched transaction rows for TDG. These delayed, range-based disclosures can identify a filing to inspect; they do not establish motive, conviction, or a real-time trading signal.
PH primary filings
TDG primary filings
What this comparison cannot tell you
This page does not contain licensed live prices, a valuation model, earnings estimates, portfolio constraints, or a forecast of future returns. SEC classifications can be broad, company descriptions can lag strategic change, and the latest annual filing may predate a material acquisition or divestiture. Read subsequent quarterly and current reports before making a decision.
A stronger business is not automatically the better stock. Starting valuation, expectations, capital structure, cyclicality, dilution, and the probability of each thesis determine the investment outcome. Use this comparison to frame the work, then verify the numbers in the linked filings and current company disclosures.
More comparisons involving PH or TDG
PH vs TDG FAQs
Are PH and TDG direct competitors?
Not necessarily. Parker-Hannifin files as Miscellaneous Fabricated Metal Products and TransDigm as Aircraft Parts & Auxiliary Equipment, NEC. The pair is compared because both map to the Wars & geopolitics research theme, not because the filings show head-to-head competition.
Is PH or TDG the bigger company by revenue?
Parker-Hannifin (PH) is the larger business by reported revenue: $19.9B in its fiscal year ended Jun 2025, about 2.2× TDG's $8.8B (fiscal year ended Sep 2025). PH's net margin was 17.8% and TDG's 23.5%. The SEC classifies them differently (Miscellaneous Fabricated Metal Products; Aircraft Parts & Auxiliary Equipment, NEC); what connects them is shared exposure to the Wars & geopolitics research theme, not a common industry. Each figure is the annual amount tagged in the company's own SEC XBRL filing; market value depends on live prices, which this page does not publish.
Which is better, PH or TDG?
There is no context-free winner. Compare the operating exposures, filing evidence, valuation, balance sheet, and risks against the specific thesis you are testing. This page deliberately does not turn a static profile into a buy or sell recommendation.
Does this PH vs TDG comparison include live prices?
No. Yield Theory does not republish unlicensed real-time market data. The financial figures on this page are the audited annual numbers Parker-Hannifin Corporation and TransDigm Group Incorporated tagged in their SEC XBRL filings. Use a regulated broker or licensed quote provider for current prices and valuation multiples.
Where does the company information come from?
Company classifications, fiscal year-ends, and filing links come from the SEC EDGAR submissions API snapshot refreshed 2026-11-09. Business summaries and research themes are maintained by Yield Theory.
Data snapshot: SEC EDGAR submissions API, refreshed 2026-11-09. Independent educational research; not investment advice.
Which business differences matter to the investment thesis?
PH vs TDG compares reported results. The reports below show how we connect operating evidence to an investment thesis, its assumptions, catalysts, and risks. $39/month or $249/year.
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