TRANSDIGM GROUP INC (TDG) Stock Institutional Trading Activity


TRANSDIGM GROUP INC (TDG) position changes reported by tracked institutional filers across multiple SEC 13F reporting periods. Based on recent SEC 13F filings (Q4 2025), investors with some of the largest reported share count changes include Lone Pine Capital, Triple Frond Partners, Vulcan Value Partners, AltaRock Partners, and Renaissance Technologies LLC. Explore insights into buying and selling patterns, position changes, and investment conviction levels to understand institutional trading behavior and market dynamics.

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Portfolio quarterNameTypeQuantityRemainingReported stock balance
Q2 2022Meritage GroupSell-46,729570,393$306,113
Q2 2022Vulcan Value PartnersSell-794,7181,230,172$660,196
Q1 2022AltaRock PartnersBuy70,2251,421,279$926,020
Q1 2022Vulcan Value PartnersSell-198,5902,024,890$1,319,297
Q1 2022Sequoia Financial AdvisorsSell-3,5613,451$2,248
Q1 2022Renaissance Technologies LLCSell-2,8007,000$4,561
Q1 2022Third PointSell-166,878160,000$104,246
Q1 2022Meritage GroupSell-39,995617,122$402,080
Q4 2021Sequoia Financial AdvisorsBuy3,7807,012$4,462
Q4 2021Triple Frond PartnersBuy18,006146,400$93,151
Q4 2021Third PointSell-123,122326,878$207,986
Q4 2021Meritage GroupBuy2,101657,117$418,110
Q4 2021AltaRock PartnersBuy24,8721,351,054$859,649
Q4 2021Vulcan Value PartnersBuy179,7872,223,480$1,414,756
Q3 2021Lountzis Asset ManagementBuy33$1,873
Q3 2021Sequoia Financial AdvisorsSell-3,7263,232$2,019
Q3 2021Meritage GroupSell-11,217655,016$409,103
Q3 2021Lone Pine CapitalBuy66,879784,342$489,876
Q3 2021AltaRock PartnersBuy70,0001,326,182$828,293
Q3 2021Vulcan Value PartnersBuy70,5792,043,693$1,276,429
Q2 2021Sequoia Financial AdvisorsBuy3,6776,958$4,504
Q2 2021Triple Frond PartnersBuy14,120128,394$83,108
Q2 2021Third PointSell-35,000450,000$291,280
Q2 2021Meritage GroupBuy4,444666,233$431,246
Q2 2021Lone Pine CapitalSell-36,947717,463$464,407
Q2 2021AltaRock PartnersBuy303,6191,256,182$813,114
Q2 2021Vulcan Value PartnersSell-60,7811,973,114$1,277,177
Q1 2021Sequoia Financial AdvisorsBuy33,281$1,929
Q1 2021Meritage GroupSell-146661,789$389,079
Q1 2021AltaRock PartnersSell-72,962952,563$560,031

Frequently asked questions about TDG activity

  • Which institutional owners are buying TDG?

    Institutional owners buying TDG include investors who have either initiated new positions or increased their existing holdings based on recent SEC 13F filings. The activity table above highlights which funds added shares in the latest reporting periods and how their positions changed over time.

  • What does "buy" mean in TDG activity?

    "Buy" means an investor increased their reported position in TDG compared to the prior reporting period. This reflects growing exposure to TRANSDIGM GROUP INC (TDG) rather than necessarily a brand-new position (though new positions also appear as buys when prior quantity was zero).

  • Is institutional interest in TDG increasing?

    Institutional interest in TDG can be assessed by comparing the number of tracked funds adding or increasing positions versus those trimming or exiting across the periods shown. A higher number of additions typically signals increasing participation among large filers, but it should be read alongside position sizes and the full table.