DOSSIER · 13F Holders · Q2 2026Communication Services · Communications Services, NEC
CALX

CALIX INC

300 institutions still hold CALIX INC as of Q2 2026. Tracked across SEC 13F-HR filings, with insider and 13D/G activity surfaced alongside.

CUSIP 13100M509·Communications Services, NEC·300 13F holders·last filed Jun 30, 2026
Market cap
13F value held
$1.5B
visible holders
Holders
300
filers reporting
Concentration
28.65%
BlackRock, Inc. #1
top holder share
AI Holders Summary · Q2 2026

300 institutions reported CALX in Q2 2026. BlackRock, Inc. leads at 28.6% of the visible book.

Top holders

Sorted by position value. Source: SEC EDGAR 13F-HR filings.

#HolderValueShares% port.Quarter
01
BlackRock, Inc.
CIK 0002012383
$439M11.8M0.01%Q2 2026
02
Vanguard Portfolio Management
CIK 0002100121· Index
$209M5.6M0.01%Q2 2026
03
ALLIANCEBERNSTEIN L.P.
CIK 0001109448
$172M3.3M0.06%Q1 2026
04
STATE STREET CORP
CIK 0000093751
$109M2.9M0.00%Q2 2026
05
VANGUARD CAPITAL MANAGEMENT LLC
CIK 0002100119· Index
$97M2.6M0.00%Q2 2026
06
GEODE CAPITAL MANAGEMENT, LLC
CIK 0001214717· Index
$55M1.5M0.00%Q2 2026
07
WESTFIELD CAPITAL MANAGEMENT CO LP
CIK 0001177719
$49M1.3M0.16%Q2 2026
08
DIMENSIONAL FUND ADVISORS LP
CIK 0000354204· Quasi-passive
$49M1.3M0.01%Q2 2026
09
ACADIAN ASSET MANAGEMENT LLC
CIK 0000916542
$39M800K0.06%Q1 2026
10
PARADIGM CAPITAL MANAGEMENT INC/NY
CIK 0001037792
$37M997K1.01%Q2 2026
11
ARROWSTREET CAPITAL, LIMITED PARTNERSHIP
CIK 0001164508
$33M876K0.01%Q2 2026
12
UBS Group AG
CIK 0001610520
$32M857K0.00%Q2 2026
13
LOOMIS SAYLES & CO L P
CIK 0000312348
$29M785K0.04%Q2 2026
14
Harvey Partners, LLC
CIK 0001406484
$28M534K2.50%Q4 2025
15
MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd.
CIK 0001705339
$28M753K0.03%Q2 2026
16
TWO SIGMA INVESTMENTS, LP
CIK 0001179392
$26M704K0.02%Q2 2026
17
MILLENNIUM MANAGEMENT LLC
CIK 0001273087
$26M699K0.01%Q2 2026
18
CHARLES SCHWAB INVESTMENT MANAGEMENT INC
CIK 0000884546· Index
$26M697K0.00%Q2 2026
19
Point72 Asset Management, L.P.
CIK 0001603466
$25M514K0.03%Q1 2026
20
Delaware Management Holdings, Inc.
CIK 0000921739
$25M660K0.04%Q2 2026
Page 1 of 15
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Insiders at CALIX INC
Listwin Donald JRusso CarlWeingarth RogerDenuccio Kevin AAshby MichaelMatthews MichaelEverett Michael TPardun Thomas E