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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, 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
94
+18 vs. Q4 2025
Shares held
1.16M
+242.3K (+26.3%) vs. Q4 2025
Total value
$209.7M
+$70.2M (+50.3%) vs. Q4 2025
New holders
24
29 more added
Sold out
6
26 more reduced

1 institution 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 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 holdersQ1 2026: 94 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 heldQ1 2026: $209.7M
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, Q1 2026

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

Institutions holding BELFA in Q1 2026
InstitutionSharesValue% of portfolioChange in sharesAction
Essential Partners LLC1$1800.00%00.0%Unchanged
Advisory Services Network, LLC1$1800.00%+1New
Hughes Financial Services, LLC1$1800.00%+1New
True Wealth Design, LLC1$1810.00%00.0%Unchanged
MAI Capital Management1$1810.00%+1New
O'Shaughnessy Asset Management, LLC2$3600.00%−2−50.0%Reduced
EverSource Wealth Advisors, LLC2$3600.00%+1+100.0%Added
SBI Securities Co., Ltd.2$3600.00%+2New
Allworth Financial LP2$3610.00%+2New
Raffa Wealth Management, LLC5$9010.00%00.0%Unchanged
Ronald Blue Trust, Inc.6$1.08K0.00%+6New
Root Financial Partners, LLC7$1.26K0.00%+7New
Farther Finance Advisors, LLC12$2.24K0.00%00.0%Unchanged
Optiver Holding B.V.22$3.96K0.00%00.0%Unchanged
Royal Bank of Canada20$4.00K0.00%−31−60.8%Reduced
Nisa Investment Advisors, LLC31$5.59K0.00%00.0%Unchanged
Sterling Capital Management LLC54$9.73K0.00%−39−41.9%Reduced
California State Teachers Retirement System87$15.7K0.00%−12−12.1%Reduced
GAMMA Investing LLC96$17.3K0.00%+2+2.1%Added
CWM, LLC118$21.3K0.00%+5+4.4%Added
Legal & General Group Plc145$26.1K0.00%+27+22.9%Added
Russell Investments Group, Ltd.170$30.6K0.00%+19+12.6%Added
Ameritas Investment Partners, Inc.171$30.8K0.00%00.0%Unchanged
Vanguard Global Advisers, LLC263$47.4K0.00%+263New
IFP Advisors, Inc276$49.7K0.00%+276New
The PNC Financial Services Group, Inc.305$55.0K0.00%+300+6,000.0%Added
Barclays PLC322$58.0K0.00%−2,240−87.4%Reduced
UBS Asset Management Americas Inc394$71.0K0.00%+303+333.0%Added
Sunbelt Securities, Inc.400$72.1K0.00%00.0%Unchanged
Tower Research Capital LLC (TRC)432$77.8K0.00%+355+461.0%Added
Quantbot Technologies LP475$85.6K0.00%+475New
Blair William & Co500$90.1K0.00%00.0%Unchanged
Police & Firemen's Retirement System of New Jersey503$90.6K0.00%00.0%Unchanged
Franklin Resources Inc563$101.5K0.00%+509+942.6%Added
Wells Fargo & Company620$111.8K0.00%−1,263−67.1%Reduced
Mirae Asset Global ETFs Holdings Ltd.803$144.7K0.00%+85+11.8%Added
New York State Common Retirement Fund900$162.2K0.00%00.0%Unchanged
MetLife Investment Management1,053$189.8K0.00%−29−2.7%Reduced
FNY Investment Advisers, LLC1,060$191.0K0.08%−440−29.3%Reduced
Allspring Global Investments Holdings, LLC1,064$198.8K0.00%−1,841−63.4%Reduced
Price T Rowe Associates Inc1,120$202.0K0.00%+1,120New
Abel Hall, LLC1,138$205.1K0.04%+1,138New
Millennium Management LLC1,190$214.4K0.00%−11,539−90.7%Reduced
Los Angeles Capital Management LLC1,249$225.1K0.00%−5,158−80.5%Reduced
Mangrove Partners1,276$229.9K0.02%+1,276New
Deutsche Bank AG1,308$235.7K0.00%+577+78.9%Added
Triasima Portfolio Management inc.1,742$313.9K0.05%00.0%Unchanged
Bank of America Corp1,825$328.9K0.00%+35+2.0%Added
STRS Ohio2,200$396.4K0.00%+2,200New
AQR Capital Management LLC2,233$402.4K0.00%+2,233New
HRT Financial LP2,255$406.0K0.00%+242+12.0%Added
Engineers Gate Manager LP2,300$414.5K0.01%+2,300New
Prelude Capital Management, LLC2,576$464.2K0.04%−450−14.9%Reduced
PenderFund Capital Management Ltd.2,700$486.5K0.08%+1,100+68.8%Added
Rhumbline Advisers2,740$493.7K0.00%−68−2.4%Reduced
Trexquant Investment LP2,989$538.6K0.00%+2,989New
BNP Paribas Arbitrage, SA3,041$548.0K0.00%+2,687+759.0%Added
JPMorgan Chase & Co3,310$596.4K0.00%+1,428+75.9%Added
Citigroup Inc3,376$608.4K0.00%+3,202+1,840.2%Added
State of Wisconsin Investment Board3,690$664.9K0.00%+3,690New
Point72 Asset Management, L.P.3,748$675.4K0.00%+2,424+183.1%Added
Bank of New York Mellon Corp4,156$748.9K0.00%−60−1.4%Reduced
Sagefield Capital LP4,416$795.8K0.06%−1,526−25.7%Reduced
Herald Investment Management Ltd5,000$898.4K0.13%−2,500−33.3%Reduced
XTX Topco Ltd5,222$941.0K0.02%+5,222New
Goldman Sachs Group Inc5,225$941.5K0.00%+2,164+70.7%Added
Vanguard Fiduciary Trust Co6,787$1.22M0.00%+6,787New
Nitor Capital Management LLC7,000$1.26M0.97%00.0%Unchanged
UBS Group AG7,177$1.29M0.00%+476+7.1%Added
Morgan Stanley7,475$1.35M0.00%+2,645+54.8%Added
Qube Research & Technologies Ltd9,157$1.65M0.00%+4,927+116.5%Added
Janney Montgomery Scott LLC9,556$1.72M0.00%−1,184−11.0%Reduced
Marshall Wace, LLP9,658$1.74M0.00%+7,061+271.9%Added
SEI Investments Co9,681$1.74M0.00%+5,076+110.2%Added
Northern Trust Corp11,738$2.12M0.00%+390+3.4%Added
Arrowstreet Capital, Limited Partnership12,375$2.23M0.00%−2,100−14.5%Reduced
Jane Street Group, LLC13,167$2.37M0.00%+7,145+118.6%Added
Brasada Capital Management, LP17,723$3.48M0.64%+17,723New
Santa Monica Partners LP23,434$4.22M2.36%00.0%Unchanged
Investors Asset Management of Georgia Inc25,781$4.65M1.90%−160−0.6%Reduced
State Street Corp28,790$5.19M0.00%+7,084+32.6%Added
Geode Capital Management, LLC34,785$6.27M0.00%−2,821−7.5%Reduced
Hound Partners, LLC34,814$6.27M0.79%−2,826−7.5%Reduced
Dimensional Fund Advisors LP44,887$8.09M0.00%−9,783−17.9%Reduced
Vanguard Capital Management LLC45,511$8.20M0.00%+45,511New
Vanguard Portfolio Management LLC46,295$8.34M0.00%+46,295New
Cable Car Capital LLC46,763$8.43M2.91%00.0%Unchanged
Gamco Investors, Inc. Et Al53,200$9.59M0.09%−12,438−18.9%Reduced
Gabelli Funds LLC63,600$11.5M0.08%−1,400−2.2%Reduced
Renaissance Technologies LLC68,253$12.3M0.02%+26,200+62.3%Added
FMR LLC77,538$14.0M0.00%−8,700−10.1%Reduced
BlackRock, Inc.91,177$16.4M0.00%+5,400+6.3%Added
Brown Advisory Inc134,404$24.2M0.04%−8,657−6.1%Reduced
Highbridge Capital Management LLC138,469$25.0M1.58%+138,469New
American Century Companies Inc0$00.00%−19,198−100.0%Sold out
Aristeia Capital LLC0$00.00%−11,094−100.0%Sold out
Citadel Advisors LLC0$00.00%−7,189−100.0%Sold out
Congruence Capital, LLC0$00.00%−2,726−100.0%Sold out
Amalgamated Bank0$00.00%−51−100.0%Sold out
SageView Advisory Group, LLC0$00.00%−10−100.0%Sold out