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CCOI · 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.

CCOITMUS
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.
  • CCOI
  • TMUS
0204060202120222023202420252026
Holders and value by quarter
QuarterCCOITMUS
Q3 202011 holders, $262m39 holders, $17.6bn
Q4 20206 holders, $189m37 holders, $19.6bn
Q1 20216 holders, $181m39 holders, $17.7bn
Q2 20215 holders, $195m32 holders, $21.2bn
Q3 20214 holders, $178m37 holders, $18.5bn
Q4 20213 holders, $182m37 holders, $15.7bn
Q1 20223 holders, $166m36 holders, $16.9bn
Q2 20223 holders, $159m42 holders, $18.3bn
Q3 20225 holders, $128m40 holders, $16.7bn
Q4 20224 holders, $120m38 holders, $15.5bn
Q1 20235 holders, $136m38 holders, $17.7bn
Q2 20232 holders, $123m39 holders, $18.1bn
Q3 20232 holders, $109m41 holders, $17.4bn
Q4 20233 holders, $141m34 holders, $17.1bn
Q1 20243 holders, $159m29 holders, $16.7bn
Q2 20243 holders, $118m30 holders, $17.8bn
Q3 20244 holders, $155m26 holders, $19.7bn
Q4 20244 holders, $146m29 holders, $18.8bn
Q1 20253 holders, $99m36 holders, $21.5bn
Q2 20253 holders, $49m35 holders, $21.1bn
Q3 20252 holders, $23m42 holders, $23.1bn
Q4 2025none listed holders, n.a.32 holders, $26.7bn
Q1 20263 holders, $7.7m42 holders, $28.3bn
Q2 20263 holders, $7.4m36 holders, $19.4bn
CCOI

Cogent Communications HLDGS

Holders
3
Reported value
$141m
Buyers
2
Sellers
1

Breadth +1 among 93 comparable managers.

Communications and media
TMUS

T-mobile US Inc

Holders
34
Reported value
$17.1bn
Buyers
8
Sellers
25

Breadth -17 among 93 comparable managers.

Communications and media

Who holds both, Q4 2023

Among the 35 tracked managers listing any of them. "Only" is about listed positions: a manager may hold the other below its listed range.

Only CCOI (1)

Renaissance Technologies LLC

Only TMUS (32)

AllianceBernstein LP, AQR Capital Management LLC, Arrowstreet Capital LP, Artisan Partners LP, Balyasny Asset Management LLC, Berkshire Hathaway Inc, Bridgewater Associates LP, D. E. Shaw & Co., Davidson Kempner Capital Management LP, Dodge & Cox, Eisler Capital Management Ltd, ExodusPoint Capital Management LP, Fidelity (FMR LLC), GAMCO Investors Inc, Harris Associates LP, Hudson Bay Capital Management LP, Invesco Ltd, Jane Street Group LLC, Janus Henderson Group Ltd, Maverick Capital Ltd, MFS Investment Management, Moore Capital Management LP, Neuberger Berman Group LLC, Point72 Asset Management LP, Soros Fund Management LLC, and 7 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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