13F Insight
DOSSIER · 13F Holders · Q1 2026Defensive growthQuality
BELFB

BEL FUSE INC

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

CUSIP 077347300·240 13F holders·last filed Mar 31, 2026
Market cap
—
▼ 8.5%
vs prior quarter
13F value held
$1.2B
48.0% inst. owned
of float
Holders
240
-104 QoQ
filers reporting
Activity
+84 / −97
+931 added · −791 reduced
this quarter
Concentration
13.94%
BlackRock, Inc. #1
top holder share
AI Holders Summary · Q1 2026

240 institutions reported BELFB in Q1 2026. BlackRock, Inc. leads at 13.9% of the visible book. -104 net institutions QoQ — distribution reading.

Top holders

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

#HolderValueShares% port.Quarter
01
BlackRock, Inc.
CIK 0002012383
$168M847K0.00%Q1 202602
JANUS HENDERSON GROUP PLC
CIK 0001274173
$151M760K0.07%Q1 202603
FMR LLC
CIK 0000315066
$125M631K0.01%Q1 202604
VANGUARD CAPITAL MANAGEMENT LLC
CIK 0002100119· Index
$97M489K0.00%Q1 202605
WASATCH ADVISORS LP
CIK 0000814133
$95M479K0.63%Q1 202606
Vanguard Portfolio Management
CIK 0002100121
$65M329K0.00%Q1 202607
GEODE CAPITAL MANAGEMENT, LLC
CIK 0001214717· Index
$61M308K0.00%Q1 202608
DIMENSIONAL FUND ADVISORS LP
CIK 0000354204· Quasi-passive
$51M257K0.01%Q1 202609
JPMORGAN CHASE & CO
CIK 0000019617
$49M249K0.00%Q1 202610
STATE STREET CORP
CIK 0000093751
$48M242K0.00%Q1 202611
Fisher Asset Management, LLC
CIK 0000850529
$43M216K0.01%Q1 202612
RENAISSANCE TECHNOLOGIES LLC
CIK 0001037389
$42M214K0.07%Q1 202613
SUSQUEHANNA INTERNATIONAL GROUP, LLP
CIK 0001446194· Market maker
$31M156K0.00%Q1 202614
LOOMIS SAYLES & CO L P
CIK 0000312348
$29M146K0.04%Q1 202615
Tidal Investments LLC
CIK 0001600064
$28M142K0.06%Q1 202616
TEMA ETFS LLC
CIK 0002056807
$26M133K1.77%Q1 202617
MASSACHUSETTS FINANCIAL SERVICES CO /MA/
CIK 0000912938
$24M123K0.01%Q1 202618
Portolan Capital Management, LLC
CIK 0001350290
$24M140K1.27%Q4 202519
ADVISORY RESEARCH INC
CIK 0000902584
$24M119K2.90%Q1 202620
FRANKLIN RESOURCES INC
CIK 0000038777
$23M114K0.01%Q1 2026
Page 1 of 12
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