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

CALIX INC

312 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·312 13F holders·last filed Jun 30, 2026
Market cap
13F value held
$1.8B
visible holders
Holders
312
filers reporting
Concentration
24.32%
BlackRock, Inc. #1
top holder share
AI Holders Summary · Q2 2026

312 institutions reported CALX in Q2 2026. BlackRock, Inc. leads at 24.3% 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
$271M5.5M0.01%Q1 2026
03
ALLIANCEBERNSTEIN L.P.
CIK 0001109448
$172M3.3M0.06%Q1 2026
04
VANGUARD CAPITAL MANAGEMENT LLC
CIK 0002100119· Index
$132M2.7M0.00%Q1 2026
05
STATE STREET CORP
CIK 0000093751
$109M2.9M0.00%Q2 2026
06
MILLENNIUM MANAGEMENT LLC
CIK 0001273087
$93M1.9M0.04%Q1 2026
07
WESTFIELD CAPITAL MANAGEMENT CO LP
CIK 0001177719
$76M1.5M0.32%Q1 2026
08
GEODE CAPITAL MANAGEMENT, LLC
CIK 0001214717· Index
$70M1.4M0.00%Q1 2026
09
DIMENSIONAL FUND ADVISORS LP
CIK 0000354204· Quasi-passive
$60M1.2M0.01%Q1 2026
10
LOOMIS SAYLES & CO L P
CIK 0000312348
$41M840K0.06%Q1 2026
11
ACADIAN ASSET MANAGEMENT LLC
CIK 0000916542
$39M800K0.06%Q1 2026
12
GILDER GAGNON HOWE & CO LLC
CIK 0000902464
$38M779K0.46%Q1 2026
13
PARADIGM CAPITAL MANAGEMENT INC/NY
CIK 0001037792
$38M768K1.44%Q1 2026
14
BANK OF AMERICA CORP /DE/
CIK 0000070858
$37M750K0.00%Q1 2026
15
MORGAN STANLEY
CIK 0000895421
$35M712K0.00%Q1 2026
16
MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd.
CIK 0001705339
$34M697K0.05%Q1 2026
17
CHARLES SCHWAB INVESTMENT MANAGEMENT INC
CIK 0000884546· Index
$33M682K0.01%Q1 2026
18
UBS Group AG
CIK 0001610520
$32M645K0.00%Q1 2026
19
NORTHERN TRUST CORP
CIK 0000073124· Index
$30M610K0.00%Q1 2026
20
Harvey Partners, LLC
CIK 0001406484
$28M534K2.50%Q4 2025
Page 1 of 16
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Insiders at CALIX INC
Listwin Donald JRusso CarlWeingarth RogerDenuccio Kevin AAshby MichaelMatthews MichaelEverett Michael TPardun Thomas E