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ATEX · CMCSA 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.

ATEXCMCSA
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.
  • ATEX
  • CMCSA
010203040202120222023202420252026
Holders and value by quarter
QuarterATEXCMCSA
Q3 20202 holders, $28m32 holders, $40.8bn
Q4 20202 holders, $11m35 holders, $45.9bn
Q1 20214 holders, $18m38 holders, $49.8bn
Q2 20214 holders, $16m34 holders, $52.9bn
Q3 20214 holders, $17m33 holders, $51.4bn
Q4 20214 holders, $17m37 holders, $45.2bn
Q1 20224 holders, $17m38 holders, $40.3bn
Q2 20222 holders, $4.5m39 holders, $32.1bn
Q3 20222 holders, $4.4m37 holders, $22.8bn
Q4 20222 holders, $3.9m28 holders, $25.4bn
Q1 20231 holders, $5k26 holders, $28.7bn
Q2 20231 holders, $1.8m25 holders, $29.4bn
Q3 20231 holders, $2.1m32 holders, $30.6bn
Q4 20231 holders, $2.5m25 holders, $28.6bn
Q1 20241 holders, $3.1m26 holders, $26.8bn
Q2 20241 holders, $4.3m28 holders, $24.1bn
Q3 20242 holders, $4.5m33 holders, $27.0bn
Q4 20242 holders, $5.0m29 holders, $24.1bn
Q1 20251 holders, $7.4m33 holders, $24.1bn
Q2 20251 holders, $7.0m34 holders, $22.3bn
Q3 20251 holders, $6.9m34 holders, $18.9bn
Q4 20251 holders, $9.2m33 holders, $20.0bn
Q1 20261 holders, $16m28 holders, $20.1bn
Q2 20263 holders, $112m29 holders, $16.2bn
ATEX

Anterix

Holders
1
Reported value
$9.2m
Buyers
10
Sellers
7

Breadth +3 among 92 comparable managers.

Communications and media
CMCSA

Comcast Corp New

Holders
33
Reported value
$20.0bn
Buyers
23
Sellers
26

Breadth -3 among 92 comparable managers.

Communications and media

Who holds both, Q4 2025

Among the 33 tracked managers listing any of them. "Only" is about listed positions: a manager may hold the other below its listed range.

Only ATEX (0)

None.

Only CMCSA (32)

Acadian Asset Management LLC, AllianceBernstein LP, AQR Capital Management LLC, Arrowstreet Capital LP, Artisan Partners LP, Brevan Howard Capital Management LP, Bridgewater Associates LP, Capital Research Global Investors, Capital World Investors, Caxton Associates LLP, D. E. Shaw & Co., Davidson Kempner Capital Management LP, Dodge & Cox, Fidelity (FMR LLC), First Eagle Investment Management LLC, Harris Associates LP, Holocene Advisors LP, Invesco Ltd, Man Group PLC, Markel Group Inc, Marshall Wace LLP, Millennium Management LLC, Point72 Asset Management LP, Renaissance Technologies LLC, Rokos Capital Management LLP, 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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