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Bel Fuse Inc

BELFA
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; 109 institutions reported holding it in 13F filings for Q2 2026, worth $393.9M in total; no superinvestor holds it.

Other share classesBELFB

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
77
+13 vs. Q3 2025
Shares held
979.1K
+61.7K (+6.7%) vs. Q3 2025
Total value
$148.5M
+$41.8M (+39.1%) vs. Q3 2025
New holders
18
21 more added
Sold out
5
24 more reduced

Compare with Q3 2025: new holders, sold out and not filed yet

Holders and value by quarter

Institutions reporting BELFA 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: 77 institutions
Q1 2021: 18 institutionsQ2 2021: 17 institutionsQ3 2021: 15 institutionsQ4 2021: 16 institutionsQ1 2022: 13 institutionsQ2 2022: 14 institutionsQ3 2022: 16 institutionsQ4 2022: 17 institutionsQ1 2023: 19 institutionsQ2 2023: 25 institutionsQ3 2023: 25 institutionsQ4 2023: 26 institutionsQ1 2024: 32 institutionsQ2 2024: 40 institutionsQ3 2024: 54 institutionsQ4 2024: 56 institutionsQ1 2025: 56 institutionsQ2 2025: 59 institutionsQ3 2025: 64 institutionsQ4 2025: 77 institutionsQ1 2026: 94 institutionsQ2 2026: 109 institutions
Value heldQ4 2025: $148.5M
Q1 2021: $14.0MQ2 2021: $10.8MQ3 2021: $10.6MQ4 2021: $10.8MQ1 2022: $14.9MQ2 2022: $15.2MQ3 2022: $19.7MQ4 2022: $20.8MQ1 2023: $23.6MQ2 2023: $39.2MQ3 2023: $31.3MQ4 2023: $44.6MQ1 2024: $57.2MQ2 2024: $78.8MQ3 2024: $103.5MQ4 2024: $89.9MQ1 2025: $69.0MQ2 2025: $81.7MQ3 2025: $106.7MQ4 2025: $148.5MQ1 2026: $209.7MQ2 2026: $393.9M
Institutions holding BELFA and their total value by quarter
QuarterHoldersValue
Q2 2026109$393.9M
Q1 202694$209.7M
Q4 202577$148.5M
Q3 202564$106.7M
Q2 202559$81.7M
Q1 202556$69.0M
Q4 202456$89.9M
Q3 202454$103.5M
Q2 202440$78.8M
Q1 202432$57.2M
Q4 202326$44.6M
Q3 202325$31.3M
Q2 202325$39.2M
Q1 202319$23.6M
Q4 202217$20.8M
Q3 202216$19.7M
Q2 202214$15.2M
Q1 202213$14.9M
Q4 202116$10.8M
Q3 202115$10.6M
Q2 202117$10.8M
Q1 202118$14.0M

Institutions, Q4 2025

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

Institutions holding BELFA in Q4 2025
InstitutionSharesValue% of portfolioChange in sharesAction
Brown Advisory Inc143,061$21.7M0.03%−12,279−7.9%Reduced
FMR LLC86,238$13.1M0.00%−2,390−2.7%Reduced
BlackRock, Inc.85,777$13.0M0.00%−1,036−1.2%Reduced
Gamco Investors, Inc. Et Al65,638$9.96M0.10%−10,100−13.3%Reduced
Gabelli Funds LLC65,000$9.87M0.07%−1,600−2.4%Reduced
Vanguard Group Inc59,310$9.00M0.00%+6,696+12.7%Added
Dimensional Fund Advisors LP54,670$8.30M0.00%−7,621−12.2%Reduced
Cable Car Capital LLC46,763$7.10M0.44%+46,763New
Renaissance Technologies LLC42,053$6.38M0.01%−700−1.6%Reduced
Hound Partners, LLC37,640$5.71M0.79%+37,640New
Geode Capital Management, LLC37,606$5.71M0.00%+2,674+7.7%Added
Investors Asset Management of Georgia Inc25,941$3.94M1.63%−210−0.8%Reduced
Santa Monica Partners LP23,434$3.56M2.16%00.0%Unchanged
State Street Corp21,706$3.29M0.00%+378+1.8%Added
American Century Companies Inc19,198$2.91M0.00%−7,670−28.5%Reduced
Arrowstreet Capital, Limited Partnership14,475$2.20M0.00%+484+3.5%Added
Millennium Management LLC12,729$1.93M0.00%+9,656+314.2%Added
Northern Trust Corp11,348$1.72M0.00%−3,989−26.0%Reduced
Aristeia Capital LLC11,094$1.68M0.05%+1,994+21.9%Added
Janney Montgomery Scott LLC10,740$1.63M0.00%−25−0.2%Reduced
Herald Investment Management Ltd7,500$1.13M0.15%00.0%Unchanged
Citadel Advisors LLC7,189$1.09M0.00%−6,147−46.1%Reduced
Nitor Capital Management LLC7,000$1.06M0.94%+7,000New
UBS Group AG6,701$1.02M0.00%+1,930+40.5%Added
Jane Street Group, LLC6,022$914.1K0.00%+1,788+42.2%Added
Sagefield Capital LP5,942$902.0K0.08%+5,942New
Los Angeles Capital Management LLC6,407$844.3K0.00%+936+17.1%Added
Morgan Stanley4,830$733.3K0.00%+821+20.5%Added
SEI Investments Co4,605$699.0K0.00%+4,605New
Qube Research & Technologies Ltd4,230$642.1K0.00%+1,774+72.2%Added
Bank of New York Mellon Corp4,216$640.0K0.00%−144−3.3%Reduced
Goldman Sachs Group Inc3,061$464.7K0.00%+3,061New
Prelude Capital Management, LLC3,026$459.3K0.03%+3,026New
Allspring Global Investments Holdings, LLC2,905$444.1K0.00%+2,905New
Rhumbline Advisers2,808$426.2K0.00%−388−12.1%Reduced
Congruence Capital, LLC2,726$413.8K0.15%+2,726New
Marshall Wace, LLP2,597$394.2K0.00%−818−24.0%Reduced
Barclays PLC2,562$388.9K0.00%+281+12.3%Added
HRT Financial LP2,013$305.0K0.00%+2,013New
Wells Fargo & Company1,883$285.8K0.00%+575+44.0%Added
JPMorgan Chase & Co1,882$285.7K0.00%−469−19.9%Reduced
Bank of America Corp1,790$271.7K0.00%+1,141+175.8%Added
Triasima Portfolio Management inc.1,742$264.4K0.04%+1,742New
PenderFund Capital Management Ltd.1,600$242.9K0.04%+1,600New
FNY Investment Advisers, LLC1,500$227.0K0.06%−137−8.4%Reduced
Point72 Asset Management, L.P.1,324$201.0K0.00%+1,324New
MetLife Investment Management1,082$164.2K0.00%00.0%Unchanged
New York State Common Retirement Fund900$136.6K0.00%−400−30.8%Reduced
Deutsche Bank AG731$111.0K0.00%+731New
Mirae Asset Global ETFs Holdings Ltd.718$109.0K0.00%−32−4.3%Reduced
Police & Firemen's Retirement System of New Jersey503$76.4K0.00%00.0%Unchanged
Blair William & Co500$75.9K0.00%00.0%Unchanged
Sunbelt Securities, Inc.400$60.7K0.00%+400New
BNP Paribas Arbitrage, SA354$53.7K0.00%+35+11.0%Added
Citigroup Inc174$26.4K0.00%+113+185.2%Added
Ameritas Investment Partners, Inc.171$26.0K0.00%00.0%Unchanged
Russell Investments Group, Ltd.151$22.9K0.00%+6+4.1%Added
Legal & General Group Plc118$17.9K0.00%−25−17.5%Reduced
CWM, LLC113$17.0K0.00%+1+0.9%Added
California State Teachers Retirement System99$15.0K0.00%−28−22.0%Reduced
GAMMA Investing LLC94$14.3K0.00%+12+14.6%Added
Sterling Capital Management LLC93$14.1K0.00%−18−16.2%Reduced
UBS Asset Management Americas Inc91$13.8K0.00%+91New
Tower Research Capital LLC (TRC)77$11.7K0.00%−99−56.3%Reduced
Franklin Resources Inc54$8.20K0.00%+54New
Amalgamated Bank51$8.00K0.00%−9−15.0%Reduced
Royal Bank of Canada51$7.00K0.00%+36+240.0%Added
Nisa Investment Advisors, LLC31$4.71K0.00%+1+3.3%Added
Optiver Holding B.V.22$3.34K0.00%00.0%Unchanged
Farther Finance Advisors, LLC12$1.82K0.00%00.0%Unchanged
SageView Advisory Group, LLC10$1.52K0.00%+10New
The PNC Financial Services Group, Inc.5$7590.00%00.0%Unchanged
Raffa Wealth Management, LLC5$7590.00%00.0%Unchanged
O'Shaughnessy Asset Management, LLC4$6070.00%00.0%Unchanged
True Wealth Design, LLC1$1520.00%00.0%Unchanged
EverSource Wealth Advisors, LLC1$1520.00%00.0%Unchanged
Essential Partners LLC1$1520.00%00.0%Unchanged
Advisory Research Inc0$00.00%−28,250−100.0%Sold out
Makaira Partners LLC0$00.00%−4,001−100.0%Sold out
Advisor Group Holdings, Inc.0$00.00%−2,622−100.0%Sold out
SRS Capital Advisors, Inc.0$00.00%−63−100.0%Sold out
Advisory Services Network, LLC0$00.00%−1−100.0%Sold out