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Bel Fuse Inc

BELFB
Exchange
Nasdaq
Industry
Electronic Coils, Transformers & Other Inductors
SEC CIK
0000729580

In the last 90 days, Bel Fuse Inc insiders filed 0 open-market purchases and 3 sales; 276 institutions reported holding it in 13F filings for Q2 2026, worth $4.18B in total; no superinvestor holds it.

Other share classesBELFA

13F holders, Q1 2026

Institutional positions in Bel Fuse Inc as of Mar 31, 2026. Investment managers with $100 million or more in US stocks report their long positions on Form 13F within 45 days after each quarter ends. How 13F works

Institutional holders
235
+34 vs. Q4 2025
Shares held
10.3M
+1.14M (+12.4%) vs. Q4 2025
Total value
$2.05B
+$488.9M (+31.3%) vs. Q4 2025
New holders
60
77 more added
Sold out
26
69 more reduced

6 institutions that held it in Q4 2025 haven't filed for Q1 2026 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.

Compare with Q4 2025: new holders, sold out and not filed yet

Holders and value by quarter

Institutions reporting BELFB on Form 13F each quarter since Q1 2021, and the total value they reported. Values are as of each quarter end, so they also move with the share price.

Institutional holdersQ1 2026: 235 institutions
Q1 2021: 88 institutionsQ2 2021: 82 institutionsQ3 2021: 82 institutionsQ4 2021: 67 institutionsQ1 2022: 70 institutionsQ2 2022: 61 institutionsQ3 2022: 83 institutionsQ4 2022: 90 institutionsQ1 2023: 96 institutionsQ2 2023: 126 institutionsQ3 2023: 134 institutionsQ4 2023: 146 institutionsQ1 2024: 147 institutionsQ2 2024: 153 institutionsQ3 2024: 163 institutionsQ4 2024: 168 institutionsQ1 2025: 164 institutionsQ2 2025: 174 institutionsQ3 2025: 197 institutionsQ4 2025: 207 institutionsQ1 2026: 235 institutionsQ2 2026: 276 institutions
Value heldQ1 2026: $2.05B
Q1 2021: $155.6MQ2 2021: $107.4MQ3 2021: $79.1MQ4 2021: $79.4MQ1 2022: $111.9MQ2 2022: $95.9MQ3 2022: $160.2MQ4 2022: $205.7MQ1 2023: $250.6MQ2 2023: $412.5MQ3 2023: $333.4MQ4 2023: $491.0MQ1 2024: $456.7MQ2 2024: $539.8MQ3 2024: $656.5MQ4 2024: $714.9MQ1 2025: $689.3MQ2 2025: $941.8MQ3 2025: $1.31BQ4 2025: $1.72BQ1 2026: $2.05BQ2 2026: $4.18B
Institutions holding BELFB and their total value by quarter
QuarterHoldersValue
Q2 2026276$4.18B
Q1 2026235$2.05B
Q4 2025207$1.72B
Q3 2025197$1.31B
Q2 2025174$941.8M
Q1 2025164$689.3M
Q4 2024168$714.9M
Q3 2024163$656.5M
Q2 2024153$539.8M
Q1 2024147$456.7M
Q4 2023146$491.0M
Q3 2023134$333.4M
Q2 2023126$412.5M
Q1 202396$250.6M
Q4 202290$205.7M
Q3 202283$160.2M
Q2 202261$95.9M
Q1 202270$111.9M
Q4 202167$79.4M
Q3 202182$79.1M
Q2 202182$107.4M
Q1 202188$155.6M

Institutions, Q1 2026

Shares, value and share of portfolio for each institution holding Bel Fuse Inc; share changes are against Q4 2025.

Institutions holding BELFB in Q1 2026
InstitutionSharesValue% of portfolioChange in sharesAction
AQR Capital Management LLC6,564$1.30M0.00%+1,718+35.5%Added
Skopos Labs, Inc.6,278$1.24M0.04%+1,000+18.9%Added
New York State Common Retirement Fund6,063$1.20M0.00%−478−7.3%Reduced
Vanguard Global Advisers, LLC5,882$1.16M0.00%+5,882New
MetLife Investment Management5,846$1.16M0.01%−35−0.6%Reduced
Man Group plc5,709$1.13M0.00%+5,709New
Caxton Associates LLP5,150$1.02M0.02%00.0%Unchanged
Toronto Dominion Bank5,143$1.02M0.00%+5,143New
Wells Fargo & Company5,111$1.01M0.00%−7,181−58.4%Reduced
Two Sigma Securities, LLC5,010$991.9K0.12%+3,438+218.7%Added
Koss-Olinger Consulting, LLC5,010$991.8K0.08%−1,906−27.6%Reduced
American Century Companies Inc4,958$981.6K0.00%−66,332−93.0%Reduced
Blackstone Group Inc.4,916$973.3K0.00%+4,916New
Mirae Asset Global ETFs Holdings Ltd.4,860$962.2K0.00%−10.0%Reduced
Verdence Capital Advisors LLC4,855$961.2K0.06%+4,855New
Manufacturers Life Insurance Company, The4,782$946.7K0.00%+50+1.1%Added
Point72 Asset Management, L.P.4,704$931.3K0.00%+4,704New
Teacher Retirement System of Texas4,646$919.8K0.00%+1,755+60.7%Added
Citigroup Inc4,329$857.1K0.00%+3,931+987.7%Added
BNP PARIBAS ASSET MANAGEMENT Holding S.A.4,267$844.8K0.00%+4,146+3,426.4%Added
Janney Montgomery Scott LLC4,260$843.0K0.00%+173+4.2%Added
Evolve Private Wealth, LLC4,095$810.7K0.04%+392+10.6%Added
Engineers Gate Manager LP4,036$799.0K0.01%+4,036New
Barclays PLC3,895$771.1K0.00%−12,303−76.0%Reduced
MML Investors Services, LLC3,750$742.5K0.00%+3,750New
Quantinno Capital Management LP3,670$726.6K0.00%+225+6.5%Added
Diametric Capital, LP3,667$726.0K0.19%+3,667New
Blair William & Co3,525$697.9K0.00%−4,500−56.1%Reduced
Stifel Financial Corp3,521$697.1K0.00%+3,521New
Beck Mack & Oliver LLC3,500$692.9K0.01%00.0%Unchanged
Los Angeles Capital Management LLC3,420$677.1K0.00%+3,357+5,328.6%Added
Ashton Thomas Private Wealth, LLC3,295$652.3K0.02%−584−15.1%Reduced
Aquatic Capital Management LLC3,213$636.1K0.02%+3,213New
Jones Financial Companies LLLP3,107$632.4K0.00%+2,916+1,526.7%Added
GLOBALT Investments LLC3,018$597.5K0.02%+104+3.6%Added
Keybank National Association3,010$595.9K0.00%00.0%Unchanged
Intech Investment Management LLC3,008$595.5K0.01%−1,111−27.0%Reduced
Concurrent Investment Advisors, LLC2,964$586.8K0.01%+2,964New
State Board of Administration of Florida Retirement System2,918$577.7K0.00%00.0%Unchanged
Arizona State Retirement System2,896$573.4K0.00%−46−1.6%Reduced
Police & Firemen's Retirement System of New Jersey2,881$570.4K0.00%00.0%Unchanged
Dynamic Technology Lab Private Ltd2,860$566.2K0.09%+2,860New
Argent Capital Management LLC2,816$557.5K0.02%+2,816New
Pinnacle Wealth Management Advisory Group, LLC2,676$529.8K0.04%−324−10.8%Reduced
Vanguard Investments Australia, Ltd.2,507$496.3K0.00%+2,507New
HSBC Holdings PLC2,528$492.6K0.00%+2,528New
Vise Technologies, Inc.2,853$484.0K0.01%00.0%Unchanged
KLP Kapitalforvaltning AS2,300$455.4K0.00%+100+4.5%Added
NBC Securities, Inc.2,145$424.7K0.03%+1,515+240.5%Added
Navellier & Associates Inc2,126$420.9K0.04%+2,126New
Zurcher Kantonalbank (Zurich Cantonalbank)2,105$416.7K0.00%00.0%Unchanged
Pictet Asset Management Holding SA2,074$410.6K0.00%+290+16.3%Added
Voya Investment Management LLC2,049$405.7K0.00%−115−5.3%Reduced
Advisor Group Holdings, Inc.2,014$398.7K0.00%−219−9.8%Reduced
FourThought Financial Partners, LLC1,965$389.0K0.03%+24+1.2%Added
Colony Group, LLC1,916$379.3K0.00%−531−21.7%Reduced
Sentinus, LLC1,901$376.3K0.03%−12,150−86.5%Reduced
STRS Ohio1,900$376.2K0.00%+100+5.6%Added
Round Rock Advisors, LLC1,855$367.3K0.06%+36+2.0%Added
Hillsdale Investment Management Inc.1,850$366.3K0.01%+1,800+3,600.0%Added
Truist Financial Corp1,797$355.8K0.00%+1,797New
Empowered Funds, LLC1,774$351.2K0.00%+1,774New
Cetera Investment Advisers1,727$341.9K0.00%+11+0.6%Added
Truvestments Capital LLC1,668$330.2K0.06%−327−16.4%Reduced
Prelude Capital Management, LLC1,661$328.8K0.03%+1,661New
Lido Advisors, LLC1,643$325.3K0.00%+1+0.1%Added
Prudential Financial Inc1,631$322.9K0.00%+1,631New
Tower Research Capital LLC (TRC)1,513$299.5K0.01%+1,347+811.4%Added
ProShare Advisors LLC1,507$298.4K0.00%−394−20.7%Reduced
Virginia Retirement Systems Et Al1,450$287.1K0.00%+1,450New
ARS Investment Partners, LLC1,445$286.1K0.01%+1,445New
Templeton & Phillips Capital Management, LLC1,443$285.7K0.23%00.0%Unchanged
Swiss Life Asset Management Ltd1,313$259.9K0.00%−257−16.4%Reduced
Bailard, Inc.1,300$257.4K0.01%+1,300New
D'Orazio & Associates, Inc.1,296$256.6K0.03%00.0%Unchanged
Walleye Capital LLC1,211$239.8K0.00%+1,211New
Blueshift Asset Management, LLC1,136$224.9K0.07%+1,136New
Dark Forest Capital Management LP1,127$223.1K0.02%−6,257−84.7%Reduced
Hohimer Wealth Management, LLC1,091$216.0K0.03%−415−27.6%Reduced
Magnetar Financial LLC1,069$211.6K0.00%+1,069New
Fox Run Management, L.L.C.1,025$202.8K0.04%+1,025New
Great West Life Assurance Co974$194.0K0.00%−503−34.1%Reduced
GWM Advisors LLC970$192.0K0.00%−3−0.3%Reduced
Ameritas Investment Partners, Inc.869$172.0K0.01%00.0%Unchanged
Acadian Asset Management LLC821$162.0K0.00%−8,014−90.7%Reduced
IFP Advisors, Inc750$148.5K0.00%+750New
Versant Capital Management, Inc732$144.9K0.01%00.0%Unchanged
State of Alaska, Department of Revenue557$110.0K0.00%00.0%Unchanged
Federated Hermes, Inc.525$103.9K0.00%+244+86.8%Added
Fifth Third Bancorp504$99.8K0.00%+504New
Caitong International Asset Management Co., Ltd407$80.6K0.01%+281+223.0%Added
Transamerica Financial Advisors, Inc.356$70.5K0.01%+356New
Sterling Capital Management LLC345$68.3K0.00%−260−43.0%Reduced
CWM, LLC317$62.8K0.00%+10+3.3%Added
Royal Bank of Canada293$58.0K0.00%−159−35.2%Reduced
The PNC Financial Services Group, Inc.286$56.6K0.00%+48+20.2%Added
Quadrant Capital Group LLC242$47.9K0.00%−7−2.8%Reduced
Smithfield Trust Co232$46.0K0.00%00.0%Unchanged
Signature Equity Partners, LLC198$39.2K0.02%+198New
KBC Group NV192$38.0K0.00%+192New