TRANSDIGM GROUP INC (TDG) Institutional Ownership Changes & 13F Activity

TRANSDIGM GROUP INC (TDG) institutional ownership data tracks hedge funds, asset managers, and other institutional investors based on recent SEC 13F filings (Q1 2026). This page analyzes institutional buying and selling activity, new holdings, and sold-out positions among tracked filers. Notable filers include Third Point, AltaRock Partners, Vulcan Value Partners, Renaissance Technologies LLC, and Lone Pine Capital.

Portfolio quarterNameTypeQuantityRemainingReported stock balance
Q1 2020Lone Pine CapitalSell-478,475775,953$248,452
Q1 2020AltaRock PartnersBuy425,1431,010,067$323,413
Q1 2020Tiger Global ManagementSell-308,7551,757,245$562,652
Q1 2020Meritage GroupSell-120,122499,983$160,090
Q1 2020Oakcliff Capital PartnersBuy24,60058,873$18,851
Q1 2020Triple Frond PartnersBuy15,000280,000$89,653
Q1 2020Sequoia Financial AdvisorsBuy1,3553,249$1,040
Q4 2019TCI Fund ManagementBuy86,48086,480$48,429
Q4 2019Meritage GroupSell-63,615620,105$347,259
Q4 2019Egerton Capital UKSell-56,244707,950$396,452
Q4 2019Renaissance Technologies LLCSell-41,8009,800$5,488
Q4 2019Triple Frond PartnersBuy40,000265,000$148,400
Q4 2019Lone Pine CapitalSell-29,6301,254,428$702,480
Q4 2019Sequoia Financial AdvisorsBuy1751,894$1,061
Q3 2019Egerton Capital UKBuy365,631764,194$397,893
Q3 2019Lone Pine CapitalSell-301,4461,284,058$668,570
Q3 2019Renaissance Technologies LLCBuy25,40051,600$26,867
Q3 2019AltaRock PartnersSell-21,000584,924$304,552
Q3 2019Triple Frond PartnersBuy12,838225,000$117,151
Q3 2019Meritage GroupBuy6,333683,720$355,992
Q2 2019Egerton Capital UKBuy398,563398,563$192,825
Q2 2019Lone Pine CapitalSell-75,7491,585,504$767,067
Q2 2019AltaRock PartnersSell-36,561605,924$293,146
Q2 2019Oakcliff Capital PartnersSell-5,83334,273$16,581
Q2 2019Sequoia Financial AdvisorsSell-501,719$832
Q1 2019Lone Pine CapitalBuy138,7331,661,253$754,192
Q1 2019Renaissance Technologies LLCBuy21,80026,200$11,895
Q1 2019Triple Frond PartnersBuy14,700212,162$96,319
Q1 2019Oakcliff Capital PartnersSell-9,00040,106$18,208
Q1 2019Meritage GroupBuy2,211677,387$307,527

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.

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