Company · Ownership research

TransDigm Group INC TDG

CIK 0001260221 · CUSIP 893641100

Insider trading Initial holdings Institutional holders

Quarter-end disclosures, not live holdings.

4 CUSIPs are reported under this ticker. This page covers the one most managers report; the others are not merged in.

This page lists the top 20 of 1032 rows by value; the complete set is available through the API.

Some filings reported values in thousands; those figures were scaled ×1000 to dollars.

Top 20 institutions

Weight means this stock's share of the manager's own portfolio.

By reported value

#	Manager	Value	Manager weight	Change vs prior	Source
01	Capital International Investors CIK 1562230 · View history	$8.93B 6,258,887 shares	1.71%	-61.09K(-1.0%)Reduced	SEC filing ↗ Nov 13, 2024	▾
02	VANGUARD GROUP INC CIK 102909 · View history	$8.84B 6,191,519 shares	0.16%	+39.49K(+0.6%)Added	SEC filing ↗ Nov 13, 2024	▾
03	BlackRock, Inc. CIK 2012383 · View history	$5.59B 3,919,658 shares	0.12%	—	SEC filing ↗ Nov 13, 2024	▾
04	Capital World Investors CIK 1422849 · View history	$5.19B 3,636,386 shares	0.80%	+99.97K(+2.8%)Added	SEC filing ↗ Nov 13, 2024	▾
05	STATE STREET CORP CIK 93751 · View history	$3.18B 2,229,199 shares	0.13%	+29.49K(+1.3%)Added	SEC filing ↗ Nov 14, 2024	▾
06	JPMORGAN CHASE & CO CIK 19617 · Amended · View history	$2.85B 1,997,827 shares	0.23%	+173.34K(+9.5%)Added	SEC filing ↗ Dec 26, 2024	▾
07	PRINCIPAL FINANCIAL GROUP INC CIK 1126328 · Amended · View history	$2.77B 1,940,852 shares	1.51%	-58.91K(-2.9%)Reduced	SEC filing ↗ Oct 31, 2024	▾
08	FMR LLC CIK 315066 · View history	$2.74B 1,920,181 shares	0.17%	+43.60K(+2.3%)Added	SEC filing ↗ Nov 13, 2024	▾
09	Capital Research Global Investors CIK 1422848 · View history	$2.60B 1,823,819 shares	0.54%	-196.00K(-9.7%)Reduced	SEC filing ↗ Nov 13, 2024	▾
10	MORGAN STANLEY CIK 895421 · Amended · View history	$1.82B 1,272,786 shares	0.13%	+179.34K(+16.4%)Added	SEC filing ↗ May 14, 2025	▾
11	GEODE CAPITAL MANAGEMENT, LLC CIK 1214717 · View history	$1.61B 1,133,443 shares	0.13%	+19.31K(+1.7%)Added	SEC filing ↗ Nov 12, 2024	▾
12	ALTAROCK PARTNERS LP CIK 1631014 · View history	$1.50B 1,048,264 shares	29.46%	-25.00K(-2.3%)Reduced	SEC filing ↗ Nov 13, 2024	▾
13	NORGES BANK CIK 1374170 · Amended · View history	$1.21B 847,929 shares	0.17%	+11.41K(+1.4%)Added	SEC filing ↗ Nov 13, 2024	▾
14	WINDACRE PARTNERSHIP LLC CIK 1599383 · View history	$1.04B 728,000 shares	13.81%	+217.70K(+42.7%)Added	SEC filing ↗ Nov 14, 2024	▾
15	Stockbridge Partners LLC CIK 1505183 · View history	$1.01B 706,338 shares	20.24%	0(0.0%)Unchanged	SEC filing ↗ Nov 14, 2024	▾
16	Invesco Ltd. CIK 914208 · View history	$754.50M 528,681 shares	0.15%	-125.95K(-19.2%)Reduced	SEC filing ↗ Nov 12, 2024	▾
17	PRIMECAP MANAGEMENT CO/CA/ CIK 763212 · View history	$732.39M 513,194 shares	0.54%	+900(+0.2%)Added	SEC filing ↗ Nov 8, 2024	▾
18	PRICE T ROWE ASSOCIATES INC /MD/ CIK 80255 · View history	$657.80M 460,927 shares	0.08%	-61.20K(-11.7%)Reduced	SEC filing ↗ Nov 14, 2024	▾
19	NORTHERN TRUST CORP CIK 73124 · View history	$642.38M 450,120 shares	0.11%	-10.86K(-2.4%)Reduced	SEC filing ↗ Nov 13, 2024	▾
20	WESTFIELD CAPITAL MANAGEMENT CO LP CIK 1177719 · View history	$530.98M 372,061 shares	2.40%	+8.65K(+2.4%)Added	SEC filing ↗ Nov 12, 2024	▾

Showing 20 / 1,032 institutions. The complete set is available through the API.

Coverage & totals by quarter

Reporting institutions

1,032

Cancelled or null records excluded

Disclosed shares

51,927,649

Not deduplicated across managers

Disclosed value

$73.97B

Not market cap or free float

Reporting institutions by quarter

Counts also change with data coverage and reporting entities; they do not measure net buying. Distinct managers with a live stock row in this CUSIP; totals may include overlapping filings and are not a share of the company.

TransDigm Group INC · Q3 2024

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Sources, coverage & how to read this data

Figures are as reported to the SEC and merged with later amendments where Akkru could match them. Preview limits apply to what is listed, not to the totals, which come from the complete reported data. Nothing is zero-filled: a missing quarter or month is shown as missing.