2026-09-29
AI summary pending
View Full Filing (SEC EDGAR)Transdigm Group Inc
$1,139.34+0.4%
+$48.3B
Net Activity
+211.38% total shares
Institutions Holding
1149
Popularity Rank
#379
Avg Weight
0.53%
Total Value
$71.1B
Market Cap
$66.3B
1149 institutions currently hold TDG, with 594 net buyers and 473 net sellers this quarter.
Institutional Moves (Q2 2026)
Neutral
Based on recent trading activity
Net Selling Institutions
473
Net Buying Institutions
594
Top 5 by Value
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Across its top 20 institutional holders, TDG's holder base skews toward low-concentration, low-turnover investors on average (avg. concentration score 17/100, avg. turnover score 32/100).
TDG ranks #379 out of 37696 tracked stocks by institutional interest — one of the most closely watched names in our coverage.
TDG is a top-conviction position for Altarock Partners LP — at 27.5% of their entire disclosed 13F portfolio, it's one of their largest single bets, not just a passing allocation.
The largest dollar stake in TDG belongs to Capital International Investors, but the position matters far more to Altarock Partners LP, who has 27.5% of their own portfolio riding on it — a reminder that the biggest holder by size and the holder with the biggest bet aren't always the same fund.
Assenagon Asset Management S.A. has added to its TDG position for two straight quarters, increasing it by $5.6M to reach $6.8M today.
Eastern Bank has trimmed its TDG position for two straight quarters, cutting it by $10.6M while still holding $136.3K.
TDG is up 0.4% today, and institutions have been net buyers of $48.3B this quarter — today's price move and the underlying institutional flow are pointing the same direction.
TDG posted net income of $2.1B over the trailing twelve months, and currently trades at a P/E of 31.1.
+$5.8B
Total Buy Value
$4.4B
Total Sell Value
594
Net Buyers
473
Net Sellers
TDG
Q2 2026
Top 5 Institutional Movers
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 2026-09-30 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.
0
unique buyers
—
buy value
12-Month Buy/Sell Activity
| Action | Insider | Date | Value |
|---|---|---|---|
| Sell | Joel Reiss | 2026-10-15 | $22K |
| Sell | Joel Reiss | 2026-10-15 | $111K |
| Sell | Joel Reiss | 2026-10-15 | $111K |
| Sell | Joel Reiss | 2026-10-15 | $56K |
| Sell | Joel Reiss | 2026-10-15 | $67K |
| Sell | Joel Reiss | 2026-10-15 | $112K |
| Sell | Joel Reiss | 2026-10-15 | $34K |
| Sell | Joel Reiss | 2026-10-15 | $67K |
| Action | Member | Trade Date | Amount |
|---|---|---|---|
| Buy | Alan Armstrong Senate | 2026-03-27 | $1K–$15K |
2
Filings (90d)
$56.46M
Total Est. Value
46K shares
Planned Shares
| Filer | Filing Date | Est. Value |
|---|---|---|
| JOEL REISS | 2026-09-15 | $8.89M |
| THE FORTUNA TRUST U/T/A DTD 06/01/2018 | 2026-08-07 | $47.57M |
Form 144 is a planned sale notice, not an executed transaction. Form 144 Tracker。
No Schedule 13D/13G filings for this ticker
9
Filings (14d)
AI summary pending
View Full Filing (SEC EDGAR)AI summary pending
View Full Filing (SEC EDGAR)AI summary pending
View Full Filing (SEC EDGAR)No AI summary for this filing type
View Full Filing (SEC EDGAR)No AI summary for this filing type
View Full Filing (SEC EDGAR)No AI summary for this filing type
View Full Filing (SEC EDGAR)TransDigm Group (TDG) issued a press release on August 4, 2026, reporting results for its fiscal third quarter ended June 27, 2026, and announced a conference call for investors later that morning. This 8-K is the routine filing that accompanies that earnings release, but the excerpt provided here doesn't include the actual revenue or profit numbers.
View Full Filing (SEC EDGAR)TransDigm Group (ticker: TDG) announced on July 27 that it has agreed to acquire Prince & Izant (P&I), a maker of specialty brazing alloys and metal components for aerospace and defense, for about $1.066 billion in cash. P&I, headquartered in Cleveland, is expected to generate roughly $360 million in revenue this year, with most of that coming from aftermarket sales. The deal is subject to U.S. regulatory approvals and customary closing conditions.
View Full Filing (SEC EDGAR)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)893641100
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