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
Q1 2016Viking Global InvestorsSell-5,313,8302,681,050$102,684
Q1 2016First Eagle U.S. ValueBuy2,281,4732,281,473$87,380
Q2 2015Third PointSell-1,500,0006,500,000$252,005
Q2 2015Renaissance Technologies LLCSell-19,900237,350$9,202
Q1 2015Viking Global InvestorsBuy7,994,8807,994,880$253,358
Q4 2014Renaissance Technologies LLCSell-226,400257,250$6,930
Q2 2014Third PointSell-1,500,0008,000,000$268,960
Q2 2014Renaissance Technologies LLCBuy483,650483,650$16,260
Q1 2014Third PointBuy1,875,0009,500,000$313,785
Q1 2014Hancock Classic ValueSell-1,033,25017,600$581
Q4 2013Third PointBuy7,625,0007,625,000$256,505
Q4 2013Hancock Classic ValueSell-7,3501,050,850$35,351
Q3 2013Hancock Classic ValueBuy24,9501,058,200$27,481
Q2 2013Hancock Classic ValueBuy1,033,2501,033,250$25,635

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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