T-MOBILE US INC (TMUS) Stock Institutional Trading Activity


T-MOBILE US INC (TMUS) 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 Renaissance Technologies LLC, Viking Global Investors, Dodge & Cox Stock Fund, Sequoia Financial Advisors, and Berkshire Hathaway. 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
Q1 2024Renaissance Technologies LLCSell-221,316434,007$70,839
Q1 2024Hancock Classic ValueSell-2932,859$466,646
Q1 2024Sequoia Financial AdvisorsSell-3,27111,620$1,896,554
Q1 2024Viking Global InvestorsBuy2,871,2984,381,297$715,115,296
Q4 2023Dodge & Cox Stock FundSell-35,34011,329,368$1,816,437,571
Q4 2023Hancock Classic ValueSell-863,152$505,360
Q4 2023Sequoia Financial AdvisorsBuy6,72414,891$2,387,506
Q4 2023Viking Global InvestorsSell-1,814,6071,509,999$242,098,140
Q3 2023Dodge & Cox Stock FundSell-142,24011,364,708$1,591,627,355
Q3 2023Sequoia Financial AdvisorsBuy8048,167$1,143,730
Q3 2023Third PointBuy300,0001,000,000$140,050,000
Q2 2023Dodge & Cox Stock FundBuy380,22411,506,948$1,598,315,077
Q2 2023Sequoia Financial AdvisorsSell-6527,363$1,022,722
Q2 2023Hancock Classic ValueSell-2803,238$449,758
Q1 2023Dodge & Cox Stock FundSell-463,61011,126,724$1,611,594,704
Q1 2023Sequoia Financial AdvisorsBuy3568,015$1,160,893
Q1 2023Parnassus Endeavor FundSell-2,212,1283,679,372$532,920,241
Q1 2023Hancock Classic ValueSell-2,3673,518$509,547
Q4 2022Dodge & Cox Stock FundSell-4,282,82211,590,334$1,622,646,760
Q4 2022Meritage GroupSell-751,516$212
Q4 2022Sequoia Financial AdvisorsBuy4,2057,659$1,072,260
Q4 2022Parnassus Endeavor FundSell-985,9835,891,500$824,810,000
Q4 2022Hancock Classic ValueBuy1,9025,885$823,900
Q3 2022Dodge & Cox Stock FundSell-830,15215,873,156$2,129,701
Q3 2022Meritage GroupBuy1,5911,591$213
Q3 2022Sequoia Financial AdvisorsSell-4973,454$463
Q3 2022Third PointBuy215,000700,000$93,919
Q3 2022Viking Global InvestorsSell-5,845,7873,324,606$446,062
Q3 2022Parnassus Endeavor FundBuy623,5186,877,483$922,752
Q2 2022Dodge & Cox Stock FundSell-581,81316,703,308$2,247,263

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.