Ticker · CUSIP 893641100

TDG

TRANSDIGM GROUP INC

Industrials·Aerospace & Defense

···Share

Holders (tracked)

Combined shares

2,231,849

Combined value

$1.98B

Last close

$1228.23

Quarter

2025Q4

Tracked holders · last 8 quarters

+3 vs previous quarter over the last 8.

Price is +38.7% vs the avg quarter-end implied price across tracked holders.

SEC event timeline

30 events

Reiss Joel · Co-Chief Operating Officer
2026-04-15
Sold $297.0K @ $1274.57
Insider sell
Reiss Joel · Co-Chief Operating Officer
2026-04-15
Sold $488.9K @ $1276.49
Insider sell
Reiss Joel · Co-Chief Operating Officer
2026-04-15
Sold $259.3K @ $1277.23
Insider sell
Reiss Joel · Co-Chief Operating Officer
2026-04-15
Sold $498.6K @ $1278.41
Insider sell
Reiss Joel · Co-Chief Operating Officer
2026-04-15
Sold $664.0K @ $1279.39
Insider sell
Reiss Joel · Co-Chief Operating Officer
2026-04-15
Sold $735.0K @ $1280.41
Insider sell
Reiss Joel · Co-Chief Operating Officer
2026-04-15
Sold $483.2K @ $1281.58
Insider sell
Reiss Joel · Co-Chief Operating Officer
2026-04-15
Sold $395.0K @ $1282.37
Insider sell
Reiss Joel · Co-Chief Operating Officer
2026-04-15
Sold $418.4K @ $1283.55
Insider sell
Reiss Joel · Co-Chief Operating Officer
2026-04-15
Sold $212.0K @ $1284.59
Insider sell
Reiss Joel · Co-Chief Operating Officer
2026-04-15
Sold $41.1K @ $1285.33
Insider sell
Reiss Joel · Co-Chief Operating Officer
2026-04-15
Sold $128.7K @ $1286.57
Insider sell
Reiss Joel · Co-Chief Operating Officer
2026-04-15
Sold $12.9K @ $1289.24
Insider sell
Reiss Joel · Co-Chief Operating Officer
2026-04-15
Sold $73.6K @ $1291.76
Insider sell
Reiss Joel · Co-Chief Operating Officer
2026-04-15
Sold $68.5K @ $1292.66
Insider sell
Reiss Joel · Co-Chief Operating Officer
2026-04-15
Sold $64.7K @ $1294.77
Insider sell
Reiss Joel · Co-Chief Operating Officer
2026-04-15
Sold $153.0K @ $1275.19
Insider sell
Steve Cohen (Point72) added2026-02-17
+252,281 shares · 2025Q4
Position
D.E. Shaw & Co. opened position2026-02-17
+23,028 shares · 2025Q4
Position
Stephen Mandel (Lone Pine Capital) opened position2026-02-17
+19,228 shares · 2025Q4
Position
AQR Capital Management added2026-02-17
+756 shares · 2025Q4
Position
Ken Griffin (Citadel Advisors) added2026-02-17
+154,078 shares · 2025Q4
Position
Izzy Englander (Millennium Mgmt) trimmed2026-02-17
−368 shares · 2025Q4
Position
T. Rowe Price trimmed2026-02-17
−2,154 shares · 2025Q4
Position
Wellington Management trimmed2026-02-17
−1,804 shares · 2025Q4
Position
Ron Baron (Baron Capital / BAMCO) trimmed2026-02-17
−4,350 shares · 2025Q4
Position
Paul Tudor Jones (Tudor Investment) opened position2026-02-17
+2,512 shares · 2025Q4
Position
Dan Sundheim (D1 Capital) exited2026-02-17
−30,800 shares · 2025Q4
Position
Ray Dalio (Bridgewater Associates) opened position2026-02-13
+5,560 shares · 2025Q4
Position
Sands Capital Management added2026-02-13
+9,883 shares · 2025Q4
Position

Insider activity

Last 30 days

Net (open-market)

−$4.99M

Buys

0 · $0

Sells

17 · $4.99M

Unique insiders

Date	Insider	Code	Shares	Price	Value
04-15	Reiss Joel Co-Chief Operating Officer · Insider	S	233	$1274.57	$297.0K
04-15	Reiss Joel Co-Chief Operating Officer · Insider	M	3,900	$284.97	$1.11M
04-15	Reiss Joel Co-Chief Operating Officer · Insider	S	383	$1276.49	$488.9K
04-15	Reiss Joel Co-Chief Operating Officer · Insider	S	203	$1277.23	$259.3K
04-15	Reiss Joel Co-Chief Operating Officer · Insider	S	390	$1278.41	$498.6K
04-15	Reiss Joel Co-Chief Operating Officer · Insider	S	519	$1279.39	$664.0K
04-15	Reiss Joel Co-Chief Operating Officer · Insider	S	574	$1280.41	$735.0K
04-15	Reiss Joel Co-Chief Operating Officer · Insider	S	377	$1281.58	$483.2K
04-15	Reiss Joel Co-Chief Operating Officer · Insider	S	308	$1282.37	$395.0K
04-15	Reiss Joel Co-Chief Operating Officer · Insider	S	326	$1283.55	$418.4K
04-15	Reiss Joel Co-Chief Operating Officer · Insider	S	165	$1284.59	$212.0K
04-15	Reiss Joel Co-Chief Operating Officer · Insider	S	32	$1285.33	$41.1K
04-15	Reiss Joel Co-Chief Operating Officer · Insider	S	100	$1286.57	$128.7K
04-15	Reiss Joel Co-Chief Operating Officer · Insider	S	10	$1289.24	$12.9K
04-15	Reiss Joel Co-Chief Operating Officer · Insider	S	57	$1291.76	$73.6K
04-15	Reiss Joel Co-Chief Operating Officer · Insider	S	53	$1292.66	$68.5K
04-15	Reiss Joel Co-Chief Operating Officer · Insider	S	50	$1294.77	$64.7K
04-15	Reiss Joel Co-Chief Operating Officer · Insider	S	120	$1275.19	$153.0K

View full insider history for TDG →

Follow-the-investor returns

If you'd copied each holder of TDG…

Cost basis inferred from each manager's quarter-over-quarter position changes. Sorted by % return on the position they're still holding.

Investor	First in	Cost basis	Return	Position value today
T. Rowe Price	2016Q1	$42.09	+2818.2%	$916.9M
Ron Baron (Baron Capital / BAMCO)	2016Q1	$310.31	+295.8%	$95.6M
Stephen Mandel (Lone Pine Capital)	2016Q1	$398.31	+208.4%	$23.6M
Sands Capital Management	2017Q1	$647.18	+89.8%	$126.7M
Ray Dalio (Bridgewater Associates)	2020Q4	$862.49	+42.4%	$6.8M
AQR Capital Management	2016Q1	$880.92	+39.4%	$18.5M
Wellington Management	2016Q1	$939.79	+30.7%	$1.4M
Ken Fisher (Fisher Asset Mgmt)	2023Q4	$1151.91	+6.6%	$367K
Steve Cohen (Point72)	2016Q1	$1329.93	-7.6%	$983K
Steve Cohen (Point72)	2016Q1	$1329.93	-7.6%	$983K
Steve Cohen (Point72)	2016Q1	$1329.93	-7.6%	$983K
D.E. Shaw & Co.	2016Q1	$1330.54	-7.7%	$28.3M
D.E. Shaw & Co.	2016Q1	$1330.54	-7.7%	$28.3M
Ken Griffin (Citadel Advisors)	2016Q2	$1333.21	-7.9%	$29.0M
Ken Griffin (Citadel Advisors)	2016Q2	$1333.21	-7.9%	$29.0M
Ken Griffin (Citadel Advisors)	2016Q2	$1333.21	-7.9%	$29.0M
Izzy Englander (Millennium Mgmt)	2017Q1	$1345.68	-8.7%	$4.8M
Paul Tudor Jones (Tudor Investment)	2016Q1	$1367.37	-10.2%	$246K
Paul Tudor Jones (Tudor Investment)	2016Q1	$1367.37	-10.2%	$246K
Norges Bank (Norway SWF)	2016Q1	$10447.95	-88.2%	$947.2M

Who moved on this name in 2025Q4

Position changes reported for the latest quarter, grouped by direction.

New positions5

Norges Bank (Norway SWF)
+771,208
$1.03B
D.E. Shaw & Co.
+23,028
$30.6M
Stephen Mandel (Lone Pine Capital)
+19,228
$25.6M
Ray Dalio (Bridgewater Associates)
+5,560
$7.4M
Paul Tudor Jones (Tudor Investment)
+2,512
$3.3M

Added to5

Steve Cohen (Point72)
+252,281
$335.5M
Ken Griffin (Citadel Advisors)
+154,078
$204.9M
Sands Capital Management
+9,883
$13.1M
AQR Capital Management
+756
$1.0M
Ken Fisher (Fisher Asset Mgmt)
+9
$12K

Trimmed4

Ron Baron (Baron Capital / BAMCO)
−4,350
$5.8M
Wellington Management
−1,804
$2.4M
Izzy Englander (Millennium Mgmt)
−368
$489K
T. Rowe Price
−2,154
$3K

Exited2

Dan Sundheim (D1 Capital)
−30,800
$40.6M
Renaissance Technologies
−1,200
$1.6M

Institutional ownership over time

Distinct super-investors holding this ticker · combined dollar value, by quarter.

Quarter	Holders	Shares	Combined value	Δ holders
2022Q1	21	6,393,413	$288.88B	—
2022Q2	19	6,469,257	$149.50B	-2
2022Q3	19	7,834,947	$154.5M	—
2022Q4	21	8,022,830	$4.56B	+2
2023Q1	20	8,041,897	$5.06B	-1
2023Q2	24	7,625,207	$6.05B	+4
2023Q3	22	7,054,756	$5.36B	-2
2023Q4	18	6,432,858	$5.82B	-4
2024Q1	21	6,343,337	$7.04B	+3
2024Q2	21	5,939,555	$6.92B	—
2024Q3	20	1,889,673	$2.04B	-1
2024Q4	22	1,861,970	$1.82B	+2
2025Q1	20	991,834	$795.9M	-2
2025Q2	22	2,062,446	$2.04B	+2
2025Q3	17	1,107,682	$473.8M	-5
2025Q4	20	2,231,849	$1.98B	+3

Congress members trading this stock

Date	Member	Type	Amount range	Filing
2026-03-25	Gilbert Cisneros	Sell (P)	$1K – $15K	PDF ↗
2026-03-16	Gilbert Cisneros	Buy	$1K – $15K	PDF ↗
2026-01-30	Gilbert Cisneros	Buy	$1K – $15K	PDF ↗
2025-12-24	Gilbert Cisneros	Sell (P)	$1K – $15K	PDF ↗
2025-11-18	Gilbert Cisneros	Buy	$1K – $15K	PDF ↗
2025-10-17	Gilbert Cisneros	Buy	$1K – $15K	PDF ↗
2025-09-23	Valerie Hoyle	Sell	$1K – $15K	PDF ↗
2025-02-04	Josh Gottheimer	Sell (P)	$1K – $15K	PDF ↗
2025-01-16	Josh Gottheimer	Sell (P)	$1K – $15K	PDF ↗
2025-01-13	Rob Bresnahan	Sell	$1K – $15K	PDF ↗
2024-10-29	Valerie Hoyle	Buy	$1K – $15K	PDF ↗

Who owns TDG

20 super-investors · 2025Q4

Tracked stake

2.23M

Combined value

$1.98B

% of shares outstanding

—

shares-out unknown

Quarter action mix

New7Added9Trim4

#	Manager	Shares	Value	% of book	Last action
1	Norges Bank Norway SWF	771.2K	$1.03B	0.1%	New+771.2K
2	Steve Cohen Point72	252.8K	$336M	0.4%	Added+252.3K
3	Ken Griffin Citadel Advisors	169.0K	$225M	0.0%	Added+154.1K
4	Sands Capital Management	103.2K	$137M	0.4%	Added+9.9K
5	Ron Baron Baron Capital / BAMCO	77.8K	$103M	0.3%	Trim−4.3K
6	Ken Griffin Citadel Advisors	23.6K	$31M	0.0%	Added+154.1K
7	D.E. Shaw & Co.	23.0K	$31M	0.0%	New+23.0K
8	Stephen Mandel Lone Pine Capital	19.2K	$26M	0.2%	New+19.2K
9	AQR Capital Management	15.1K	$20M	0.0%	Added+756
10	Ken Griffin Citadel Advisors	15.0K	$20M	0.0%	Added+154.1K
11	Ray Dalio Bridgewater Associates	5.6K	$7M	0.0%	New+5.6K
12	Izzy Englander Millennium Mgmt	3.9K	$5M	0.0%	Trim−368
13	Paul Tudor Jones Tudor Investment	2.5K	$3M	0.0%	New+2.5K
14	Wellington Management	1.1K	$1M	0.0%	Trim−1.8K
15	Steve Cohen Point72	800	$1M	0.0%	Added+252.3K
16	T. Rowe Price	746.6K	$993K	0.1%	Trim−2.2K
17	D.E. Shaw & Co.	600	$798K	0.0%	New+23.0K
18	Steve Cohen Point72	400	$532K	0.0%	Added+252.3K
19	Ken Fisher Fisher Asset Mgmt	299	$398K	0.0%	Added+9
20	Paul Tudor Jones Tudor Investment	200	$266K	0.0%	New+2.5K

Recent moves

20 transactions

ADDSteve Cohen (Point72)
+252,281 · 2025Q4
NEWStephen Mandel (Lone Pine Capital)
+19,228 · 2025Q4
TRIMT. Rowe Price
−2,154 · 2025Q4
TRIMRon Baron (Baron Capital / BAMCO)
−4,350 · 2025Q4
TRIMIzzy Englander (Millennium Mgmt)
−368 · 2025Q4
TRIMWellington Management
−1,804 · 2025Q4
NEWD.E. Shaw & Co.
+23,028 · 2025Q4
ADDAQR Capital Management
+756 · 2025Q4
ADDKen Griffin (Citadel Advisors)
+154,078 · 2025Q4
NEWPaul Tudor Jones (Tudor Investment)
+2,512 · 2025Q4
SOLDDan Sundheim (D1 Capital)
−30,800 · 2025Q4
NEWRay Dalio (Bridgewater Associates)
+5,560 · 2025Q4
ADDSands Capital Management
+9,883 · 2025Q4
SOLDRenaissance Technologies
−1,200 · 2025Q4
NEWNorges Bank (Norway SWF)
+771,208 · 2025Q4
ADDKen Fisher (Fisher Asset Mgmt)
+9 · 2025Q4
SOLDPaul Tudor Jones (Tudor Investment)
−45,433 · 2025Q3
NEWSteve Cohen (Point72)
+500 · 2025Q3
TRIMIzzy Englander (Millennium Mgmt)
−7,214 · 2025Q3
SOLDD.E. Shaw & Co.
−111,846 · 2025Q3

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