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SIRI · TMUS in the 13F filings

Two to four stocks side by side among the 95 tracked managers: who lists them, how that has moved, who bought and sold in a quarter, and which managers hold more than one.

SIRITMUS
Quarter
Q2 2026Q1 2026Q4 2025Q3 2025Q2 2025Q1 2025Q4 2024Q3 2024Q2 2024Q1 2024Q4 2023

Holders over time

Tracked managers listing each stock every quarter, at least, or their combined reported value. A gap is a quarter in which no tracked manager listed it. Click a quarter to compare there.
  • SIRI
  • TMUS
0204060202120222023202420252026
Holders and value by quarter
QuarterSIRITMUS
Q3 2020none listed holders, n.a.39 holders, $17.6bn
Q4 2020none listed holders, n.a.37 holders, $19.6bn
Q1 2021none listed holders, n.a.39 holders, $17.7bn
Q2 2021none listed holders, n.a.32 holders, $21.2bn
Q3 2021none listed holders, n.a.37 holders, $18.5bn
Q4 2021none listed holders, n.a.37 holders, $15.7bn
Q1 2022none listed holders, n.a.36 holders, $16.9bn
Q2 2022none listed holders, n.a.42 holders, $18.3bn
Q3 2022none listed holders, n.a.40 holders, $16.7bn
Q4 2022none listed holders, n.a.38 holders, $15.5bn
Q1 2023none listed holders, n.a.38 holders, $17.7bn
Q2 2023none listed holders, n.a.39 holders, $18.1bn
Q3 2023none listed holders, n.a.41 holders, $17.4bn
Q4 2023none listed holders, n.a.34 holders, $17.1bn
Q1 2024none listed holders, n.a.29 holders, $16.7bn
Q2 2024none listed holders, n.a.30 holders, $17.8bn
Q3 20249 holders, $2.6bn26 holders, $19.7bn
Q4 20243 holders, $2.8bn29 holders, $18.8bn
Q1 20256 holders, $2.9bn36 holders, $21.5bn
Q2 20255 holders, $3.1bn35 holders, $21.1bn
Q3 202510 holders, $3.1bn42 holders, $23.1bn
Q4 20255 holders, $2.6bn32 holders, $26.7bn
Q1 20265 holders, $2.9bn42 holders, $28.3bn
Q2 20268 holders, $3.8bn36 holders, $19.4bn
SIRI

Siriusxm Holdings Inc

Holders
10
Reported value
$3.1bn
Buyers
7
Sellers
3

Breadth +4 among 95 comparable managers.

Communications and media
TMUS

T-mobile US Inc

Holders
42
Reported value
$23.1bn
Buyers
22
Sellers
20

Breadth +2 among 95 comparable managers.

Communications and media

Who holds both, Q3 2025

Among the 45 tracked managers listing any of them. "Only" is about listed positions: a manager may hold the other below its listed range.

Only SIRI (3)

Berkshire Hathaway Inc, Maverick Capital Ltd, Quantbot Technologies LP

Only TMUS (35)

Acadian Asset Management LLC, AllianceBernstein LP, AQR Capital Management LLC, Arrowstreet Capital LP, Balyasny Asset Management LLC, Brevan Howard Capital Management LP, Capital World Investors, Caxton Associates LLP, Citadel Advisors LLC, Davidson Kempner Capital Management LP, Dodge & Cox, Eisler Capital Management Ltd, Fidelity (FMR LLC), Freestone Grove Partners LP, Hudson Bay Capital Management LP, Invesco Ltd, Jane Street Group LLC, Janus Henderson Group Ltd, Man Group PLC, Marshall Wace LLP, MFS Investment Management, Millennium Management LLC, Moore Capital Management LP, Neuberger Berman Group LLC, PDT Partners LLC, and 10 more

How much of the picture this is

A 13F is a manager’s long US-listed equity book at a quarter end, filed up to 45 days later. Buyers and sellers count comparable managers (those that filed both quarters) by shares, so a rise in value with no rise in shares is the price. Large books are listed to their largest positions. These are 95 tracked managers, not the institutional market.

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