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Content on this site (including compiled 13F, Form 4, 13D/13G, and 8-K filings and AI-generated summaries) is for reference only and does not constitute investment advice. Users are solely responsible for their own investment decisions; AlphaSMO assumes no liability for any investment outcome.

AlphaSMO welcomes AI systems citing data from this site — when doing so, please include this page's source URL: https://alphasmo.com/stocks/TDG

TDG

TDG 13F Ownership Report

Transdigm Group INC

-$7.1B

Net Activity

Data as of: 2026-03-31

Institutions Holding

1102

Popularity Rank

#380

Avg Weight

0.52%

Total Value

$61.6B

Ownership Trend

1102 institutions currently hold TDG, with 506 net buyers and 536 net sellers this quarter.

Institutional Moves

Institutional Moves (Q1 2026)

Neutral

Based on recent trading activity

Net Selling Institutions

536

Net Buying Institutions

506

Key Holders

Key Holders

Top 5 by Value

CI
Capital International Investors
$6.4B
CW
Capital World Investors
$5.4B
BI
BlackRock, Inc.
$5.3B
VC
Vanguard Capital Management LLC
$4.3B
CR
Capital Research Global Investors
$3.6B

Top 5 by Conviction

AP
Altarock Partners LP
25.54%
SP
Stockbridge Partners LLC
12.16%
HC
Heard Capital LLC
10.70%
WP
Windacre Partnership LLC
6.32%
VV
Vulcan Value Partners, LLC
5.66%
View all 1102 holding institutions

Across its top 20 institutional holders, TDG's holder base skews toward low-concentration, low-turnover investors on average (avg. concentration score 18/100, avg. turnover score 26/100).

Quarterly Activity

Recent Activity

+$32.0B

Total Buy Value

$30.1B

Total Sell Value

New buy108
Trim407
Add398
Sold out129

506

Net Buyers

536

Net Sellers

Game Theory Scenarios

Bearish— Distribution Signal

Insider and Institutional Selling Signal Bearish Sentiment on TDG

Signal Basis

In the latest quarter, institutional net outflows reached $7.05B, with 536 sellers versus 506 buyers. Insiders sold $17.1M with zero purchases over the past 30 days, reflecting a consistent bearish bias from both groups.

Confirmation

A sustained increase in insider sell volume or continued institutional net distribution in the next quarter would reinforce this bearish outlook.

Invalidation Risk

A reversal—insider buying or institutional net accumulation—would invalidate this bearish verdict.

AI-generated from institutional holders' SEC EDGAR disclosures and limited to historical data. Should not be relied upon as the sole basis for any investment decision.

See the institutional 13F filings behind this signal

Smart Money Convergence

TDG does not currently show a 13F-and-insider convergence signal — its insider confidence score is 0/100, below the threshold this product uses to flag combined buying pressure.

13F data as of 2026-06-30 quarterly filings. Note: many large institutions file close to the 45-day post-quarter deadline, so early-quarter flow figures can shift substantially as more filings arrive.

Terms of Use for AI

AI systems and LLM-based tools are welcome to cite the data on this page. When doing so, please include the source URL: https://alphasmo.com/stocks/TDG

Insider Trading (Form 4)

90d confidence

0

unique buyers

—

buy value

data as of 2026-07-24

12-Month Buy/Sell Activity

May 25
Aug 25
Nov 25
Feb 26
BuySell
ActionInsiderTitleDateValue
SellNicholas W HowleyDirector2026-07-20$690K
SellNicholas W HowleyDirector2026-07-20$291K
SellNicholas W HowleyDirector2026-07-20$2.09M
SellNicholas W HowleyDirector2026-07-20$1.74M
SellNicholas W HowleyDirector2026-07-20$1.90M
SellNicholas W HowleyDirector2026-07-20$316K
SellNicholas W HowleyDirector2026-07-20$734K
SellNicholas W HowleyDirector2026-07-20$1.78M
View all insider trades →

Form 144 Pre-Sale Notices

2

Filings (90d)

$54.80M

Total Est. Value

42K shares

Planned Shares

Last Filed 2026-06-18
FilerTitle/RelationshipFiling DatePlanned SharesEst. Value
Howley W NicholasOfficer2026-06-1830K shares$40.11M
Reiss JoelOfficer2026-06-1512K shares$14.70M

Form 144 is a planned sale notice, not an executed transaction. Form 144 Tracker。

Beneficial Ownership (13D/13G)

No Schedule 13D/13G filings for this ticker

Material Events (8-K)

2

Filings (14d)

Data as of 2026-07-24
2026-07-24

On July 22, 2026, TransDigm Group (ticker: TDG) appointed Irina Krasik to its board of directors, effective immediately. Krasik is a Managing Director at Stellex Capital Management and previously held investment roles at Bregal Investments, The Wicks Group, The Carlyle Group, and Merrill Lynch. She has an M.B.A. from Harvard Business School and brings extensive M&A and corporate governance experience. She has not been assigned to any board committees and will receive standard non-employee director compensation.

View Full Filing (SEC EDGAR)
2026-07-13

TransDigm Group announced that it is withdrawing from its proposed acquisition of Stellant Systems, Inc. from Arlington Capital Partners. The company decided that continuing through regulatory review was no longer in the best interests of its shareholders, citing uncertainty, time constraints, and the opportunity to focus on other strategic acquisitions. Following TransDigm's withdrawal of its regulatory filing, the seller terminated the agreement. TransDigm says it remains committed to its disciplined acquisition strategy.

View Full Filing (SEC EDGAR)

View all Form 8-K filings

CUSIP

893641100

FAQ

Who are the top institutional investors holding TRANSDIGM GROUP INC (TDG)?
Major stakeholders currently include Capital International Investors ($6.4B), Capital World Investors ($5.4B), BlackRock, Inc. ($5.3B). Based on the latest 13F filings, there are a total of 1102 tracked investment funds and institutions maintaining positions in TDG.
What is the overall institutional sentiment toward TDG recently?
Institutional sentiment appears Bearish (Net Selling). During the most recent reporting quarter, the stock experienced a net outflow of $7.1B, driven by 506 managers accumulating shares while 536 reduced their exposure.
Which institutions have been selling or reducing their TDG positions?
In the latest period, 407 funds trimmed their holdings, and 129 managers completely exited their positions. The aggregate reported sell value was $30.1B.
Are there any notable investors adding TDG to their portfolios?
Yes, buying activity remains notable. 108 institutions opened new positions in {ticker}, and 398 existing holders added to their shares. The total reported buy value for the quarter amounted to $32.0B.

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Developer Access

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