13F Insight
DOSSIER · 13F Holders · Q1 2026Technology · Radio & Tv Broadcasting & Communications EquipmentCyclicalNet sold
HLIT

HARMONIC INC

265 institutions still hold HARMONIC INC as of Q1 2026. Tracked across SEC 13F-HR filings, with insider and 13D/G activity surfaced alongside.

CUSIP 413160102·Radio & Tv Broadcasting & Communications Equipment·265 13F holders·last filed Mar 31, 2026
Market cap
—
▼ 5.2%
vs prior quarter
13F value held
$601M
72.0% inst. owned
of float
Holders
265
+135 QoQ
filers reporting
Activity
+11 / −47
+958 added · −934 reduced
this quarter
Concentration
28.64%
BlackRock, Inc. #1
top holder share
AI Holders Summary · Q1 2026

265 institutions reported HLIT in Q1 2026. BlackRock, Inc. leads at 28.6% of the visible book. +135 net new institutions vs prior quarter — accumulation reading.

Top holders

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

#HolderValueShares% port.Quarter
01
BlackRock, Inc.
CIK 0002012383
$172M19.2M0.00%Q1 202602
Vanguard Portfolio Management
CIK 0002100121
$55M6.1M0.00%Q1 202603
STATE STREET CORP
CIK 0000093751
$44M4.9M0.00%Q1 202604
VANGUARD CAPITAL MANAGEMENT LLC
CIK 0002100119· Index
$42M4.7M0.00%Q1 202605
D. E. Shaw & Co., Inc.
CIK 0001009207
$34M3.4M0.02%Q4 202506
DIMENSIONAL FUND ADVISORS LP
CIK 0000354204· Quasi-passive
$33M3.7M0.01%Q1 202607
Trigran Investments, Inc.
CIK 0001336800
$29M3.2M6.91%Q1 202608
GEODE CAPITAL MANAGEMENT, LLC
CIK 0001214717· Index
$25M2.8M0.00%Q1 202609
ALLIANCEBERNSTEIN L.P.
CIK 0001109448
$20M2.1M0.01%Q1 202610
ARROWSTREET CAPITAL, LIMITED PARTNERSHIP
CIK 0001164508
$20M2.2M0.01%Q1 202611
MARSHALL WACE, LLP
CIK 0001318757
$18M1.8M0.02%Q4 202512
Leeward Investments, LLC - MA
CIK 0001923173
$15M1.7M0.75%Q1 202613
MORGAN STANLEY
CIK 0000895421
$15M1.7M0.00%Q1 202614
Nuveen, LLC
CIK 0001871926
$12M1.4M0.00%Q1 202615
Alyeska Investment Group, L.P.
CIK 0001453072
$12M1.2M0.03%Q4 202516
Silverberg Bernstein Capital Management LLC
CIK 0002007880
$12M1.3M6.57%Q1 202617
AMERICAN CENTURY COMPANIES INC
CIK 0000748054
$11M1.2M0.01%Q1 202618
NORTHERN TRUST CORP
CIK 0000073124· Index
$11M1.2M0.00%Q1 202619
First Eagle Investment Management, LLC
CIK 0001325447
$11M1.2M0.02%Q1 202620
SYSTEMATIC FINANCIAL MANAGEMENT LP
CIK 0001085936
$10M1.1M0.23%Q1 2026
Page 1 of 14
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