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
Q4 2018Lone Pine CapitalSell-240,5931,522,520$517,748
Q4 2018Tiger Global ManagementBuy222,0002,066,000$702,564
Q4 2018Renaissance Technologies LLCSell-218,6004,400$1,496
Q4 2018Meritage GroupBuy122,627675,176$229,600
Q4 2018AltaRock PartnersBuy108,054642,485$218,483
Q4 2018Triple Frond PartnersSell-8,236197,462$67,149
Q3 2018Tiger Global ManagementSell-590,5001,844,000$686,521
Q3 2018Meritage GroupBuy11,009552,549$205,714
Q3 2018Lone Pine CapitalBuy1,3001,763,113$656,407
Q2 2018Lone Pine CapitalBuy351,4111,761,813$608,072
Q2 2018Tiger Global ManagementSell-331,0002,434,500$840,243
Q2 2018Triple Frond PartnersSell-35,300205,698$70,995
Q2 2018Meritage GroupBuy3,002541,540$186,907
Q1 2018Tiger Global ManagementBuy845,8952,765,500$848,843
Q1 2018Viking Global InvestorsBuy473,6411,048,958$321,967
Q1 2018Triple Frond PartnersSell-149,000240,998$73,972
Q1 2018AltaRock PartnersSell-45,100534,431$164,038
Q1 2018Meritage GroupBuy338538,538$165,299
Q4 2017Tiger Global ManagementSell-1,340,3951,919,605$527,162
Q4 2017Lone Pine CapitalSell-617,9901,410,402$387,325
Q4 2017Meritage GroupBuy99,023538,200$147,800
Q4 2017Triple Frond PartnersSell-90,000389,998$107,101
Q4 2017AltaRock PartnersSell-67,000579,531$159,151
Q4 2017Viking Global InvestorsBuy41,457575,317$157,994
Q3 2017Tiger Global ManagementSell-740,0003,260,000$833,419
Q3 2017AltaRock PartnersBuy74,367646,531$165,286
Q3 2017Sequoia Financial AdvisorsBuy7191,769$452
Q3 2017Oakcliff Capital PartnersSell-62149,106$12,553
Q2 2017Tiger Global ManagementBuy1,459,2724,000,000$1,075,480
Q2 2017Viking Global InvestorsSell-567,450533,860$143,539

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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