T-MOBILE US INC (TMUS) Institutional Ownership Changes & 13F Activity

T-MOBILE US INC (TMUS) 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 Renaissance Technologies LLC, Viking Global Investors, Dodge & Cox Stock Fund, Sequoia Financial Advisors, and Hancock Classic Value.

Portfolio quarterNameTypeQuantityRemainingReported stock balance
Q3 2022Viking Global InvestorsSell-5,845,7873,324,606$446,062
Q3 2022Dodge & Cox Stock FundSell-830,15215,873,156$2,129,701
Q3 2022Parnassus Endeavor FundBuy623,5186,877,483$922,752
Q3 2022Third PointBuy215,000700,000$93,919
Q3 2022Meritage GroupBuy1,5911,591$213
Q3 2022Sequoia Financial AdvisorsSell-4973,454$463
Q2 2022Viking Global InvestorsSell-4,247,7829,170,393$1,233,785
Q2 2022Third PointSell-3,365,000485,000$65,252
Q2 2022Parnassus Endeavor FundBuy664,3556,253,965$841,408
Q2 2022Dodge & Cox Stock FundSell-581,81316,703,308$2,247,263
Q2 2022Sequoia Financial AdvisorsBuy1553,951$532
Q1 2022Parnassus Endeavor FundBuy5,246,7765,589,610$717,426
Q1 2022Dodge & Cox Stock FundBuy821,86217,285,121$2,218,545
Q1 2022Viking Global InvestorsBuy269,88813,418,175$1,722,223
Q1 2022Sequoia Financial AdvisorsBuy1,9513,796$487
Q4 2021Dodge & Cox Stock FundBuy3,701,67416,463,259$1,909,409
Q4 2021Viking Global InvestorsBuy2,923,10213,148,287$1,524,938
Q4 2021Appaloosa ManagementSell-1,269,0081,275,992$147,990
Q4 2021Sequoia Financial AdvisorsBuy1,8451,845$214
Q4 2021Hancock Classic ValueSell-3483,983$462
Q3 2021Egerton Capital UKSell-5,374,3321,274,093$162,778
Q3 2021Viking Global InvestorsBuy2,682,99610,225,185$1,306,370
Q3 2021Dodge & Cox Stock FundBuy1,437,07212,761,585$1,630,420
Q3 2021Renaissance Technologies LLCSell-561,323655,323$83,724
Q3 2021Appaloosa ManagementBuy25,0002,545,000$325,149
Q3 2021Hancock Classic ValueBuy1034,331$553
Q2 2021Dodge & Cox Stock FundBuy9,195,91511,324,513$1,640,129
Q2 2021Viking Global InvestorsSell-2,743,0557,542,189$1,092,335
Q2 2021Appaloosa ManagementSell-1,670,0002,520,000$364,972
Q2 2021Egerton Capital UKSell-573,0726,648,425$962,891

Frequently asked questions about TMUS activity

  • Which institutional owners are buying TMUS?

    Institutional owners buying TMUS 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 TMUS activity?

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

  • Is institutional interest in TMUS increasing?

    Institutional interest in TMUS 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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