TransDigm Group Incorporated (TDG) Ownership
TDG ownership summary
as of October 18, 2026- Institutions
- 97.5% of shares outstanding
- Insiders
- 0.41% of shares outstanding
- Shares outstanding
- 55.3M
- Float
- 55.0M shares available to trade
- Short interest
- 2.90% 1.2M shares short
- Days to cover
- 3.02 short interest up 33.4% vs prior month
- Institutions 97.49%
- Insiders 0.41%
- Other investors 2.10%
TDG top institutional holders
20 largest| # | Holder | % of shares | Shares | Value | Change | Reported |
|---|---|---|---|---|---|---|
| 1 | Capital Research & Mgmt Co - Division 3 | 9.16% | 5.1M | $5.77B | −432,013 (−7.9%) | June 30, 2026 |
| 2 | BlackRock Inc | 8.81% | 4.9M | $5.55B | +270,253 (+5.9%) | June 30, 2026 |
| 3 | Capital World Investors | 7.73% | 4.3M | $4.87B | −392,382 (−8.4%) | June 30, 2026 |
| 4 | Vanguard Capital Management, LLC | 6.61% | 3.7M | $4.16B | −16,218 (−0.4%) | June 30, 2026 |
| 5 | Capital Research Global Investors | 5.64% | 3.1M | $3.55B | −24,019 (−0.8%) | June 30, 2026 |
| 6 | Vanguard Portfolio Management, LLC | 4.67% | 2.6M | $2.94B | +7,907 (+0.3%) | June 30, 2026 |
| 7 | State Street Corp | 4.63% | 2.6M | $2.92B | +42,490 (+1.7%) | June 30, 2026 |
| 8 | Principal Financial Group Inc | 3.09% | 1.7M | $1.95B | −304,655 (−15.1%) | June 30, 2026 |
| 9 | Geode Capital Management, LLC | 2.33% | 1.3M | $1.47B | +9,941 (+0.8%) | June 30, 2026 |
| 10 | FMR Inc | 1.97% | 1.1M | $1.24B | −267,005 (−19.7%) | June 30, 2026 |
| 11 | Soroban Capital Partners LP | 1.62% | 898K | $1.02B | +42,000 (+4.9%) | June 30, 2026 |
| 12 | ALTAROCK PARTNERS LLC | 1.58% | 876K | $997.8M | −33,413 (−3.7%) | June 30, 2026 |
| 13 | Morgan Stanley - Brokerage Accounts | 1.58% | 873K | $994.1M | −21,176 (−2.4%) | June 30, 2026 |
| 14 | JPMorgan Chase & Co | 1.51% | 835K | $951.5M | −62,835 (−7.0%) | June 30, 2026 |
| 15 | NORGES BANK | 1.41% | 782K | $890.7M | +10,523 (+1.4%) | June 30, 2026 |
| 16 | WINDACRE PARTNERSHIP LLC | 1.24% | 684K | $779.4M | +174,500 (+34.2%) | June 30, 2026 |
| 17 | UBS Group AG | 1.10% | 607K | $691.2M | +97,018 (+19.0%) | June 30, 2026 |
| 18 | T. Rowe Price Associates, Inc. | 1.04% | 574K | $654.5M | −18,257 (−3.1%) | June 30, 2026 |
| 19 | Amvescap Plc. | 0.87% | 480K | $546.4M | +44,960 (+10.3%) | June 30, 2026 |
| 20 | Northern Trust Corp | 0.85% | 468K | $532.7M | +11,699 (+2.6%) | June 30, 2026 |
Value at the latest close. Change = shares bought or sold in the latest quarterly filing (13F). In the top 20, 10 holders added 711K shares and 10 cut 1.6M.
TDG top mutual fund and ETF holders
20 largest| # | Holder | % of shares | Shares | Value | Change | Reported |
|---|---|---|---|---|---|---|
| 1 | American Funds Fundamental Invs A | 5.01% | 2.8M | $3.15B | +24,207 (+0.9%) | September 30, 2026 |
| 2 | American Funds Growth Fd of Amer A | 3.74% | 2.1M | $2.36B | −133,907 (−6.1%) | September 30, 2026 |
| 3 | Vanguard MStar Total Stk Mkt Idx Invest | 3.22% | 1.8M | $2.03B | −3,522 (−0.2%) | August 31, 2026 |
| 4 | American Funds American Balanced A | 2.96% | 1.6M | $1.87B | +191,558 (+13.2%) | September 30, 2026 |
| 5 | Vanguard 500 Index Investor | 2.62% | 1.5M | $1.65B | −35,220 (−2.4%) | September 30, 2026 |
| 6 | Vanguard MStar Mid Cap Index Instl | 2.14% | 1.2M | $1.35B | −26,222 (−2.2%) | September 30, 2026 |
| 7 | Principal MidCap R5 | 1.69% | 933K | $1.06B | −26,859 (−2.8%) | September 30, 2026 |
| 8 | iShares Core S&P 500 ETF | 1.33% | 737K | $839.1M | −1,184 (−0.2%) | September 30, 2026 |
| 9 | Fidelity 500 Index | 1.31% | 726K | $827.2M | +2,789 (+0.4%) | August 31, 2026 |
| 10 | State Street® SPDR® S&P 500® ETF | 1.22% | 677K | $771.1M | — | September 30, 2026 |
| 11 | American Funds Cptl Wld Gr&Inc A | 1.22% | 676K | $770.1M | +50,837 (+8.1%) | September 30, 2026 |
| 12 | Vanguard MStar Growth Index Investor | 1.19% | 657K | $748.9M | +30,496 (+4.9%) | September 30, 2026 |
| 13 | American Funds AMCAP A | 1.16% | 640K | $729.5M | −1.1M (−63.8%) | September 30, 2026 |
| 14 | American Funds IS® Growth 1 | 1.13% | 624K | $710.6M | −8,012 (−1.3%) | September 30, 2026 |
| 15 | iShares US Aerospace & Defense ETF | 0.92% | 510K | $581.0M | −872 (−0.2%) | September 30, 2026 |
| 16 | American Funds New Perspective A | 0.84% | 465K | $530.1M | −24,057 (−4.9%) | September 30, 2026 |
| 17 | Fidelity Magellan | 0.82% | 454K | $517.7M | +64,200 (+16.5%) | August 31, 2026 |
| 18 | American Funds New Economy A | 0.81% | 449K | $511.7M | +33,282 (+8.0%) | September 30, 2026 |
| 19 | Vanguard MStar Mid Cap Growth ETF | 0.79% | 434K | $494.4M | +4,270 (+1.0%) | September 30, 2026 |
| 20 | Capital Group Growth ETF | 0.74% | 410K | $467.3M | +1,080 (+0.3%) | September 30, 2026 |
Funds report holdings monthly or quarterly; dates differ by fund.
TDG insider transactions
latest 20| Date | Name | Transaction | Price | Shares | Value |
|---|---|---|---|---|---|
| 2026-04-20 | W Nicholas Howley | Sell | $1,265.06 | 10,132 | $12.8M |
| 2026-04-15 | Joel Reiss | Sell | $1,280.46 | 3,900 | $5.0M |
| 2026-03-25 | Gilbert Ray Cisneros, Jr. | Sell | $1,156.17 | — | — |
| 2026-03-18 | W Nicholas Howley | Sell | $1,213.05 | 10,132 | $12.3M |
| 2026-03-16 | Joel Reiss | Sell | $1,243.70 | 3,900 | $4.9M |
| 2026-03-16 | Gilbert Ray Cisneros, Jr. | Buy | $1,247.63 | — | — |
| 2026-02-25 | Robert J Small | Buy | $1,285.00 | 1 | $1,285 |
| 2026-02-18 | W Nicholas Howley | Sell | $1,307.68 | 10,168 | $13.3M |
| 2026-02-06 | Michael Lisman | Buy | $1,284.26 | 950 | $1.2M |
| 2026-02-02 | Kevin M Stein | Sell | $1,425.79 | 36,925 | $52.6M |
| 2026-02-02 | Patrick Joseph Murphy | Sell | $1,430.10 | 290 | $414,729 |
| 2026-02-02 | Kevin M Stein | Sell | $1,434.49 | 11,075 | $15.9M |
| 2026-01-30 | Gilbert Ray Cisneros, Jr. | Buy | $1,429.40 | — | — |
| 2026-01-15 | Joel Reiss | Sell | $1,429.92 | 3,900 | $5.6M |
| 2026-01-14 | Kevin M Stein | Sell | $1,406.38 | 7,627 | $10.7M |
| 2026-01-08 | Kevin M Stein | Sell | $1,407.25 | 17,373 | $24.4M |
| 2026-01-05 | Kevin M Stein | Sell | $1,373.59 | 25,000 | $34.3M |
| 2026-01-02 | Patrick Joseph Murphy | Sell | $1,329.03 | 290 | $385,419 |
| 2025-12-24 | Gilbert Ray Cisneros, Jr. | Sell | $1,313.57 | — | — |
| 2025-12-15 | Joel Reiss | Sell | $1,290.52 | 3,900 | $5.0M |
Reported trades by company officers, directors and other filers (including disclosures by members of Congress where EODHD lists them). "—" where the filing gives no share count.
TDG shares outstanding
Year-end shares outstanding, adjusted for splits.
Who owns TDG
Institutional investors own 97.5% of TransDigm's shares and insiders 0.41%. The largest holder is Capital Research & Mgmt Co - Division 3 with 9.16% of the shares (5.1M), as of June 30, 2026. Among the top 20 institutions, 10 added shares and 10 reduced their stake in the latest filings. Short interest is 2.90% of the float, or 3.02 days of average trading volume. The share count rose 2.8% since 2014.
Related: TDG analyst forecast, TDG key metrics, TDG dividend history. See the TDG stock overview for the latest quote and news.
TDG ownership FAQ
Who owns the most TransDigm stock?
The largest shareholders of TransDigm are Capital Research & Mgmt Co - Division 3 (9.16%), BlackRock Inc (8.81%), Capital World Investors (7.73%), Vanguard Capital Management, LLC (6.61%), Capital Research Global Investors (5.64%).
What percentage of TransDigm is owned by institutions?
Institutions hold 97.5% of TransDigm's shares outstanding; insiders hold 0.41%.
Which funds own TransDigm?
The largest fund holders of TransDigm are American Funds Fundamental Invs A (5.01%), American Funds Growth Fd of Amer A (3.74%), Vanguard MStar Total Stk Mkt Idx Invest (3.22%), American Funds American Balanced A (2.96%), Vanguard 500 Index Investor (2.62%).
What is TransDigm's short interest?
1.2M shares of TransDigm were sold short, 2.90% of the float; at the average daily volume it would take 3.02 days to cover.
Are insiders buying or selling TransDigm?
Of the latest 20 reported insider transactions in TransDigm (since December 15, 2025), 4 were purchases and 16 were sales.
How many shares of TransDigm are outstanding?
TransDigm has 55.3M shares outstanding, of which 55.0M are in the public float.