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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
GLOBALT Investments LLC3,018$597.5K0.02%+104+3.6%Added
Jones Financial Companies LLLP3,107$632.4K0.00%+2,916+1,526.7%Added
Aquatic Capital Management LLC3,213$636.1K0.02%+3,213New
Ashton Thomas Private Wealth, LLC3,295$652.3K0.02%−584−15.1%Reduced
Los Angeles Capital Management LLC3,420$677.1K0.00%+3,357+5,328.6%Added
Beck Mack & Oliver LLC3,500$692.9K0.01%00.0%Unchanged
Stifel Financial Corp3,521$697.1K0.00%+3,521New
Blair William & Co3,525$697.9K0.00%−4,500−56.1%Reduced
Diametric Capital, LP3,667$726.0K0.19%+3,667New
Quantinno Capital Management LP3,670$726.6K0.00%+225+6.5%Added
MML Investors Services, LLC3,750$742.5K0.00%+3,750New
Barclays PLC3,895$771.1K0.00%−12,303−76.0%Reduced
Engineers Gate Manager LP4,036$799.0K0.01%+4,036New
Evolve Private Wealth, LLC4,095$810.7K0.04%+392+10.6%Added
Janney Montgomery Scott LLC4,260$843.0K0.00%+173+4.2%Added
BNP PARIBAS ASSET MANAGEMENT Holding S.A.4,267$844.8K0.00%+4,146+3,426.4%Added
Citigroup Inc4,329$857.1K0.00%+3,931+987.7%Added
Teacher Retirement System of Texas4,646$919.8K0.00%+1,755+60.7%Added
Point72 Asset Management, L.P.4,704$931.3K0.00%+4,704New
Manufacturers Life Insurance Company, The4,782$946.7K0.00%+50+1.1%Added
Verdence Capital Advisors LLC4,855$961.2K0.06%+4,855New
Mirae Asset Global ETFs Holdings Ltd.4,860$962.2K0.00%−10.0%Reduced
Blackstone Group Inc.4,916$973.3K0.00%+4,916New
American Century Companies Inc4,958$981.6K0.00%−66,332−93.0%Reduced
Koss-Olinger Consulting, LLC5,010$991.8K0.08%−1,906−27.6%Reduced
Two Sigma Securities, LLC5,010$991.9K0.12%+3,438+218.7%Added
Wells Fargo & Company5,111$1.01M0.00%−7,181−58.4%Reduced
Toronto Dominion Bank5,143$1.02M0.00%+5,143New
Caxton Associates LLP5,150$1.02M0.02%00.0%Unchanged
Man Group plc5,709$1.13M0.00%+5,709New
MetLife Investment Management5,846$1.16M0.01%−35−0.6%Reduced
Vanguard Global Advisers, LLC5,882$1.16M0.00%+5,882New
New York State Common Retirement Fund6,063$1.20M0.00%−478−7.3%Reduced
Skopos Labs, Inc.6,278$1.24M0.04%+1,000+18.9%Added
AQR Capital Management LLC6,564$1.30M0.00%+1,718+35.5%Added
Occudo Quantitative Strategies LP4,940$1.36M0.07%+4,940New
PFG Advisors6,945$1.38M0.07%+289+4.3%Added
Vanguard Asset Management, Ltd7,060$1.40M0.00%+7,060New
Sowell Financial Services LLC7,214$1.43M0.05%+7,214New
Corsair Capital Management, L.P.7,234$1.43M0.21%00.0%Unchanged
XTX Topco Ltd7,415$1.47M0.03%+7,415New
B. Metzler seel. Sohn & Co. AG7,634$1.51M0.01%+2,664+53.6%Added
Legal & General Group Plc7,945$1.57M0.00%−1,212−13.2%Reduced
Oliver Luxxe Assets LLC8,132$1.61M0.24%+18+0.2%Added
CenterBook Partners LP8,742$1.73M0.09%+8,742New
Deutsche Bank AG8,838$1.75M0.00%+749+9.3%Added
Pinnacle Associates Ltd8,906$1.76M0.02%−1,135−11.3%Reduced
Precision Wealth Strategies, LLC9,416$1.86M0.62%+9,416New
Alliancebernstein L.P.11,244$1.91M0.00%+546+5.1%Added
Bank of America Corp10,348$2.05M0.00%+89+0.9%Added
Ritholtz Wealth Management11,016$2.18M0.04%−276−2.4%Reduced
Expect Equity LLC11,061$2.19M1.70%−7,476−40.3%Reduced
Integrated Quantitative Investments LLC11,467$2.27M0.41%+8,848+337.8%Added
Legato Capital Management LLC11,514$2.28M0.21%−889−7.2%Reduced
Qube Research & Technologies Ltd11,752$2.33M0.00%−3,009−20.4%Reduced
BNP Paribas Arbitrage, SA12,248$2.42M0.00%+9,912+424.3%Added
Bridges Investment Management Inc12,425$2.46M0.03%+12,425New
North Star Investment Management Corp.12,550$2.48M0.15%+12,000+2,181.8%Added
California State Teachers Retirement System13,217$2.62M0.00%+3,585+37.2%Added
Rhumbline Advisers13,367$2.65M0.00%+44+0.3%Added
TD Asset Management Inc13,498$2.67M0.00%+1,004+8.0%Added
Two Sigma Investments, LP14,584$2.89M0.00%+14,584New
O'Shaughnessy Asset Management, LLC14,609$2.89M0.01%−159−1.1%Reduced
Principal Financial Group Inc14,722$2.91M0.00%+14,722New
Dean Capital Management14,847$2.94M1.22%−8,657−36.8%Reduced
Phocas Financial Corp.15,277$3.02M0.47%−7,814−33.8%Reduced
Castleark Management LLC16,311$3.23M0.11%−16,790−50.7%Reduced
Rockefeller Capital Management L.P.17,272$3.42M0.01%+17,233+44,187.2%Added
SG Americas Securities, LLC17,642$3.49M0.00%+12,966+277.3%Added
Creative Planning18,826$3.73M0.00%+3,811+25.4%Added
Emerald Investment Advisers, LLC19,097$3.78M0.34%+19,097New
UBS Asset Management Americas Inc19,270$3.82M0.00%+113+0.6%Added
State of Wisconsin Investment Board20,787$4.12M0.01%−2,099−9.2%Reduced
Swiss National Bank20,800$4.12M0.00%00.0%Unchanged
Dean Investment Associates, LLC21,145$4.19M0.59%−13,414−38.8%Reduced
Nuveen, LLC22,676$4.49M0.00%+686+3.1%Added
Credit Agricole S A23,700$4.69M0.02%+15,200+178.8%Added
Ballast Asset Management, LP23,727$4.70M2.09%−18,281−43.5%Reduced
EAM Investors, LLC24,022$4.76M0.55%−2,459−9.3%Reduced
Envestnet Asset Management Inc24,470$4.84M0.00%+19,672+410.0%Added
Investors Asset Management of Georgia Inc24,807$4.91M2.01%−150−0.6%Reduced
Nitor Capital Management LLC25,400$5.03M3.87%00.0%Unchanged
Victory Capital Management Inc29,560$5.85M0.00%−4,449−13.1%Reduced
Herald Investment Management Ltd30,000$5.94M0.83%00.0%Unchanged
Citadel Advisors LLC32,527$6.44M0.00%+28,580+724.1%Added
Arrowstreet Capital, Limited Partnership32,977$6.53M0.00%−64,139−66.0%Reduced
LPL Financial LLC33,618$6.66M0.00%+19,197+133.1%Added
Russell Investments Group, Ltd.34,367$6.80M0.01%−42−0.1%Reduced
Raymond James Financial Inc34,992$6.93M0.00%+13,916+66.0%Added
Voloridge Investment Management, LLC35,081$6.95M0.03%−5,502−13.6%Reduced
SEI Investments Co35,669$7.06M0.01%+8,521+31.4%Added
Grandeur Peak Global Advisors, LLC36,892$7.30M1.71%−1,252−3.3%Reduced
Jane Street Group, LLC38,350$7.59M0.01%+38,350New
Polen Capital Management LLC43,339$8.58M0.06%+20,817+92.4%Added
Nomura Asset Management International Inc.50,956$10.1M0.02%+14,105+38.3%Added
Bank of New York Mellon Corp51,236$10.1M0.00%−2,451−4.6%Reduced
Portolan Capital Management, LLC53,170$10.5M0.56%−86,343−61.9%Reduced
UBS Group AG57,231$11.3M0.00%+10,656+22.9%Added
First Trust Advisors LP58,028$11.5M0.01%+3,630+6.7%Added
Susquehanna International Group, LLP60,018$11.9M0.02%+48,947+442.1%Added