TransDigm TDG
$1,197.01 +$7.82 (+0.66%)
Market closed · Nov 6, 8:10 pm ET · Last extended-hours $1,182.32 -1.23%
Open$1,185.88
Prev close$1,189.19
Day range$1,178.98 – $1,204.44
Volume293.3K
Market cap$66.17B
P/E (TTM)36.3
Dividend yield–
Ownership & positioning
Who holds it, who is betting against it, and where the big money is moving
Institutional ownership97.1%-0.14 pts vs. prior quarter
Institutions holding1,313-6 vs. prior quarter
Insider trades (recent)23 buys / 27 sellsNet selling
Short interest1.89% of floatDays to cover 3.2 · as of 15 Oct 2026
Short-sale volume share15.1%5-day average of daily volume
Short-sale volume as % of daily volume
Large-order net flow, last 20 sessions
Net of large-order buying minus selling, in USD. Over this window: +$11.36M (11 inflow days, 9 outflow days).
Net flow by order size, last 20 sessions
Super/Big orders approximate institutional-size trades; Mid/Small approximate retail-size trades. Net buy minus sell value in each bucket, summed over the window.
The five largest holders on file together own 48.0% of shares outstanding.
Largest holders
By investor type
Reported short interest has risen from 1.72% to 1.89% of float over the last 6 biweekly reports (31 Jul 2026 to 15 Oct 2026).
Recent institutional activity
| Holder | Type | Period | Share change | New stake |
|---|---|---|---|---|
| Select Equity Group, L.P. | Hedge Fund | 2026/Q3 | +305,287 | 0.6% |
| BlackRock | Mutual Fund | 2026/Q3 | +270,253 | 8.8% |
| Manulife Asset Management | Mutual Fund | 2026/Q3 | +202,300 | 0.7% |
| The WindAcre Partnership LLC | Mutual Fund | 2026/Q3 | +174,500 | 1.2% |
| UBS Asset Management | Mutual Fund | 2026/Q3 | +91,482 | 1.7% |
| Third Point LLC | Hedge Fund | 2026/Q3 | +54,000 | 0.1% |
| Two Sigma Investments, LP | Hedge Fund | 2026/Q3 | +44,914 | 0.1% |
| Invesco Capital Management LLC | Mutual Fund | 2026/Q3 | +43,037 | 0.7% |
| State Street Global Advisors | Mutual Fund | 2026/Q3 | +42,490 | 4.6% |
| Soroban Capital Partners LP | Hedge Fund | 2026/Q3 | +42,000 | 1.6% |
| Goldman Sachs Asset Management, L.P. | Mutual Fund | 2026/Q3 | +41,786 | 0.5% |
| Arrowstreet Capital, Limited Partnership | Mutual Fund | 2026/Q3 | +38,344 | 0.1% |
| CIBC Private Wealth Advisors, Inc. | Mutual Fund | 2026/Q3 | +35,484 | 0.4% |
| Wells Fargo & Company | Public Company | 2026/Q3 | +34,311 | 0.3% |
| Charles Schwab Investment Management | Mutual Fund | 2026/Q3 | +32,710 | 0.8% |
Institutional buy/sell activity by reporting period, largest moves first.
Insider transactions
| Date | Insider | Title | Transaction | Shares | Price | Held after |
|---|---|---|---|---|---|---|
| 14 Oct 2026 | Joel Reiss | Co-Chief Operating Officer | Derivative Exercise and Sale | -4,100 | $1,135.95 | 3,600 |
| 17 Sep 2026 | David Barr | Independent Director | Other Acquisition | +46 | $1,085.00 | 32,225 |
| 17 Sep 2026 | Robert Small | Lead Independent Director | Other Acquisition | +52 | $1,085.00 | 65,923 |
| 17 Sep 2026 | Gary McCullough | Independent Director | Other Acquisition | +41 | $1,085.00 | 993 |
| 17 Sep 2026 | Sean Hennessy | Independent Director | Other Acquisition | +46 | $1,085.00 | 33,836 |
| 17 Sep 2026 | Walter Howley | Independent Non-Executive Chairperson | Other Acquisition | +126 | $1,085.00 | 30,049 |
| 17 Sep 2026 | Michael Graff | Independent Director | Other Acquisition | +34 | $1,085.00 | 13,813 |
| 17 Sep 2026 | Irina Krasik | Director | Other Acquisition | +13 | $1,085.00 | 13 |
| 17 Sep 2026 | Peter Palmer | Director | Other Acquisition | +34 | $1,085.00 | 4,064 |
| 17 Sep 2026 | Michele Santana | Independent Director | Other Acquisition | +34 | $1,085.00 | 805 |
| 17 Sep 2026 | Jane Cronin | Independent Director | Other Acquisition | +34 | $1,085.00 | 734 |
| 14 Sep 2026 | Joel Reiss | Co-Chief Operating Officer | Derivative Exercise and Sale | -3,900 | $1,119.00 | 3,600 |
| 17 Aug 2026 | Walter Howley | Independent Non-Executive Chairperson | Derivative Exercise and Sale | -10,132 | $1,241.14 | 29,923 |
| 16 Aug 2026 | Joel Reiss | Co-Chief Operating Officer | Derivative Exercise and Sale | -3,900 | $1,253.08 | 3,600 |
| 19 Jul 2026 | Walter Howley | Independent Non-Executive Chairperson | Derivative Exercise and Sale | -10,132 | $1,224.14 | 29,923 |
| 17 Jun 2026 | Walter Howley | Independent Non-Executive Chairperson | Intent to Sell (Form 144) | -30,396 | $1,319.55 | – |
| 14 Jun 2026 | Joel Reiss | Co-Chief Operating Officer | Derivative Exercise and Sale | -3,900 | $1,287.59 | 3,600 |
| 17 May 2026 | Walter Howley | Independent Non-Executive Chairperson | Derivative Exercise and Sale | -10,132 | $1,189.02 | 29,923 |
| 14 May 2026 | Joel Reiss | Co-Chief Operating Officer | Derivative Exercise and Sale | -3,900 | $1,175.28 | 3,600 |
| 19 Apr 2026 | Walter Howley | Independent Non-Executive Chairperson | Derivative Exercise and Sale | -10,132 | $1,271.63 | 29,923 |
From Form 4/Form 144 filings. Negative share counts are disposals (sales, gifts, or shares withheld for taxes); positive are acquisitions.
Short interest, by report
| Report date | Shares short | % of float | Days to cover |
|---|---|---|---|
| 15 Oct 2026 | 1,045,903 | 1.9% | 3.2 |
| 30 Sep 2026 | 1,199,613 | 2.2% | 2.7 |
| 15 Sep 2026 | 1,067,135 | 1.9% | 3.2 |
| 31 Aug 2026 | 899,190 | 1.6% | 2.5 |
| 14 Aug 2026 | 835,437 | 1.5% | 1.5 |
| 31 Jul 2026 | 962,406 | 1.7% | 2.9 |
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