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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, Q4 2025

Institutional positions in Bel Fuse Inc as of Dec 31, 2025. 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
207
+11 vs. Q3 2025
Shares held
10.1M
+781.7K (+8.4%) vs. Q3 2025
Total value
$1.72B
+$403.3M (+30.7%) vs. Q3 2025
New holders
38
68 more added
Sold out
27
67 more reduced

1 institution that held it in Q3 2025 haven't filed for Q4 2025 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.

Compare with Q3 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 holdersQ4 2025: 207 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 heldQ4 2025: $1.72B
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, Q4 2025

Shares, value and share of portfolio for each institution holding Bel Fuse Inc; share changes are against Q3 2025.

Institutions holding BELFB in Q4 2025
InstitutionSharesValue% of portfolioChange in sharesAction
Manufacturers Life Insurance Company, The4,732$802.7K0.00%−539−10.2%Reduced
SG Americas Securities, LLC4,676$793.0K0.00%+279+6.3%Added
Intech Investment Management LLC4,119$698.7K0.01%00.0%Unchanged
Janney Montgomery Scott LLC4,087$693.0K0.00%+79+2.0%Added
SummitTX Capital, L.P.4,033$684.1K0.02%+4,033New
Two Sigma Advisers, LP4,000$678.5K0.00%−1,738−30.3%Reduced
Natixis4,000$678.5K0.00%+4,000New
Citadel Advisors LLC3,947$669.5K0.00%−92,103−95.9%Reduced
Ashton Thomas Private Wealth, LLC3,879$658.0K0.02%+387+11.1%Added
Verition Fund Management LLC3,858$654.4K0.00%−200−4.9%Reduced
Evolve Private Wealth, LLC3,703$628.1K0.04%+3,703New
Beck Mack & Oliver LLC3,500$593.7K0.01%00.0%Unchanged
Quantinno Capital Management LP3,445$584.4K0.00%+182+5.6%Added
PDT Partners, LLC3,176$538.7K0.03%00.0%Unchanged
DekaBank Deutsche Girozentrale8,287$535.0K0.00%00.0%Unchanged
Keybank National Association3,010$510.6K0.00%+10+0.3%Added
Pinnacle Wealth Management Advisory Group, LLC3,000$508.9K0.04%+3,000New
Arizona State Retirement System2,942$499.1K0.00%−170−5.5%Reduced
State Board of Administration of Florida Retirement System2,918$495.0K0.00%00.0%Unchanged
GLOBALT Investments LLC2,914$494.3K0.02%−314−9.7%Reduced
Teacher Retirement System of Texas2,891$490.4K0.00%−1,199−29.3%Reduced
Police & Firemen's Retirement System of New Jersey2,881$488.7K0.00%00.0%Unchanged
Vise Technologies, Inc.2,853$484.0K0.01%+2,853New
Integrated Quantitative Investments LLC2,619$444.3K0.10%+2,619New
Colony Group, LLC2,447$415.1K0.00%+2,447New
BNP Paribas Arbitrage, SA2,336$396.3K0.00%+248+11.9%Added
Advisor Group Holdings, Inc.2,233$378.8K0.00%−3,329−59.9%Reduced
KLP Kapitalforvaltning AS2,200$373.2K0.00%−200−8.3%Reduced
Numerai GP LLC2,177$369.3K0.04%−1,739−44.4%Reduced
Voya Investment Management LLC2,164$367.1K0.00%00.0%Unchanged
Zurcher Kantonalbank (Zurich Cantonalbank)2,105$357.1K0.00%00.0%Unchanged
Truvestments Capital LLC1,995$338.4K0.06%−118−5.6%Reduced
FourThought Financial Partners, LLC1,941$329.3K0.03%+417+27.4%Added
Money Concepts Capital Corp1,925$326.5K0.02%+1,925New
ProShare Advisors LLC1,901$322.5K0.00%+123+6.9%Added
Jefferies Financial Group Inc.1,883$319.4K0.00%+1,883New
Brevan Howard Capital Management LP1,863$316.0K0.01%+426+29.6%Added
Round Rock Advisors, LLC1,819$308.6K0.05%+1,819New
STRS Ohio1,800$305.3K0.00%00.0%Unchanged
Pictet Asset Management Holding SA1,784$302.6K0.00%−316−15.0%Reduced
Cetera Investment Advisers1,716$291.0K0.00%+1,716New
Two Sigma Securities, LLC1,572$266.7K0.04%−1,666−51.5%Reduced
Swiss Life Asset Management Ltd1,570$266.3K0.00%+1,570New
Hohimer Wealth Management, LLC1,506$255.5K0.03%00.0%Unchanged
Paragon Associates & Paragon Associates II Joint Venture1,500$254.4K0.53%−8,500−85.0%Reduced
Steward Partners Investment Advisory, LLC1,485$251.8K0.00%−15−1.0%Reduced
Great West Life Assurance Co1,477$250.0K0.00%00.0%Unchanged
Templeton & Phillips Capital Management, LLC1,443$244.8K0.16%00.0%Unchanged
Lido Advisors, LLC1,642$231.6K0.00%00.0%Unchanged
Strategic Family Wealth Counselors, L.L.C.1,105$222.3K0.05%+1,105New
D'Orazio & Associates, Inc.1,296$219.8K0.03%+1,296New
Arkadios Wealth Advisors1,227$208.1K0.00%+1,227New
Axq Capital, LP1,195$202.7K0.05%−1,015−45.9%Reduced
GWM Advisors LLC973$165.1K0.00%−6−0.6%Reduced
Ameritas Investment Partners, Inc.869$147.4K0.00%00.0%Unchanged
Versant Capital Management, Inc732$124.2K0.02%00.0%Unchanged
NBC Securities, Inc.630$106.9K0.01%+630New
Sterling Capital Management LLC605$102.6K0.00%−115−16.0%Reduced
Clearstead Advisors, LLC590$100.1K0.00%+390+195.0%Added
Covestor Ltd581$98.0K0.05%−85−12.8%Reduced
State of Alaska, Department of Revenue557$94.0K0.00%00.0%Unchanged
North Star Investment Management Corp.550$93.3K0.01%00.0%Unchanged
Group One Trading, L.P.532$90.2K0.00%+200+60.2%Added
Erste Asset Management GmbH490$83.1K0.00%+490New
Royal Bank of Canada452$77.0K0.00%−8,229−94.8%Reduced
Citigroup Inc398$67.5K0.00%−521−56.7%Reduced
Amalgamated Bank327$55.0K0.00%−26−7.4%Reduced
CWM, LLC307$52.0K0.00%−13−4.1%Reduced
Federated Hermes, Inc.281$47.7K0.00%−53−15.9%Reduced
Quadrant Capital Group LLC249$42.2K0.00%+13+5.5%Added
The PNC Financial Services Group, Inc.238$40.4K0.00%+22+10.2%Added
Smithfield Trust Co232$39.0K0.00%00.0%Unchanged
Kemnay Advisory Services Inc.195$33.1K0.00%+195New
Jones Financial Companies LLLP191$32.4K0.00%−68−26.3%Reduced
GAMMA Investing LLC168$28.5K0.00%+11+7.0%Added
Tower Research Capital LLC (TRC)166$28.2K0.00%−564−77.3%Reduced
Farther Finance Advisors, LLC149$25.3K0.00%+117+365.6%Added
Simplex Trading, LLC144$24.4K0.00%+139+2,780.0%Added
Public Employees Retirement System of Ohio139$23.6K0.00%+20+16.8%Added
US Bancorp136$23.1K0.00%+10+7.9%Added
Nisa Investment Advisors, LLC135$22.9K0.00%−34−20.1%Reduced
Caitong International Asset Management Co., Ltd126$21.4K0.01%+126New
BNP PARIBAS ASSET MANAGEMENT Holding S.A.121$21.0K0.00%+37+44.0%Added
Global Retirement Partners, LLC100$17.0K0.00%00.0%Unchanged
Comerica Bank98$16.6K0.00%00.0%Unchanged
Signaturefd, LLC97$16.5K0.00%−53−35.3%Reduced
Smartleaf Asset Management LLC64$11.1K0.00%00.0%Unchanged
Los Angeles Capital Management LLC63$9.49K0.00%+63New
Hillsdale Investment Management Inc.50$8.48K0.00%+50New
Optiver Holding B.V.46$7.80K0.00%−46−50.0%Reduced
WealthCollab, LLC46$7.80K0.00%00.0%Unchanged
Rockefeller Capital Management L.P.39$6.62K0.00%+39New
Pinnacle Wealth Planning Services, Inc.36$6.11K0.00%+36New
EverSource Wealth Advisors, LLC30$5.09K0.00%−19−38.8%Reduced
Parallel Advisors, LLC29$4.92K0.00%+2+7.4%Added
Allspring Global Investments Holdings, LLC26$4.56K0.00%+26New
ORG Partners LLC26$4.41K0.00%+17+188.9%Added
Rothschild Investment LLC22$3.73K0.00%+2+10.0%Added
True Wealth Design, LLC19$3.22K0.00%00.0%Unchanged
CIBC Private Wealth Group, LLC17$2.88K0.00%00.0%Unchanged