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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, Q2 2023

Institutional positions in Bel Fuse Inc as of Jun 30, 2023. 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
126
+31 vs. Q1 2023
Shares held
7.19M
+573.7K (+8.7%) vs. Q1 2023
Total value
$412.5M
+$164.0M (+66.0%) vs. Q1 2023
New holders
47
40 more added
Sold out
16
30 more reduced

1 institution that held it in Q1 2023 haven't filed for Q2 2023 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.

Compare with Q1 2023: 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 holdersQ2 2023: 126 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 heldQ2 2023: $412.5M
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, Q2 2023

Shares, value and share of portfolio for each institution holding Bel Fuse Inc; share changes are against Q1 2023.

Institutions holding BELFB in Q2 2023
InstitutionSharesValue% of portfolioChange in sharesAction
Calamos Advisors LLC61,821$3.55M0.02%+8,494+15.9%Added
Bridgeway Capital Management, LLC62,001$3.56M0.09%+992+1.6%Added
Santa Monica Partners LP67,634$3.88M3.15%00.0%Unchanged
Gabelli Funds LLC76,191$4.37M0.03%−1,300−1.7%Reduced
D. E. Shaw & Co., Inc.77,026$4.42M0.01%+49,909+184.1%Added
EAM Investors, LLC94,862$5.45M1.01%+43,953+86.3%Added
Northern Trust Corp101,150$5.81M0.00%+71,071+236.3%Added
ArrowMark Colorado Holdings LLC102,232$5.87M0.06%−26,255−20.4%Reduced
Potrero Capital Research LLC103,000$5.91M3.77%+3,726+3.8%Added
Hillsdale Investment Management Inc.107,771$6.19M0.57%−88,730−45.2%Reduced
Oberweis Asset Management Inc121,500$6.98M0.85%00.0%Unchanged
Bank of New York Mellon Corp129,391$7.43M0.00%+24,429+23.3%Added
American Century Companies Inc130,874$7.51M0.01%+17,485+15.4%Added
Boston Partners132,308$7.60M0.01%−7,625−5.4%Reduced
Russell Investments Group, Ltd.164,769$9.46M0.02%+27,157+19.7%Added
State Street Corp187,245$10.7M0.00%+143,349+326.6%Added
Morgan Stanley208,930$12.0M0.00%−59,480−22.2%Reduced
LSV Asset Management221,700$12.7M0.03%+459+0.2%Added
Geode Capital Management, LLC229,030$13.1M0.00%+114,933+100.7%Added
Invesco Ltd.318,657$18.3M0.00%−67,678−17.5%Reduced
Renaissance Technologies LLC333,051$19.1M0.03%−19,900−5.6%Reduced
Portolan Capital Management, LLC355,126$20.4M1.81%−151,227−29.9%Reduced
Acadian Asset Management LLC420,666$24.1M0.10%+30,949+7.9%Added
Vanguard Group Inc645,971$37.1M0.00%+79,152+14.0%Added
BlackRock Inc.752,760$43.2M0.00%+510,513+210.7%Added
Dimensional Fund Advisors LP760,436$43.7M0.01%−3,132−0.4%Reduced
Ameriprise Financial Inc0$00.00%−233,432−100.0%Sold out
HRT Financial LP0$00.00%−35,584−100.0%Sold out
Tudor Investment Corp Et Al0$00.00%−16,008−100.0%Sold out
Verition Fund Management LLC0$00.00%−11,905−100.0%Sold out
Mirabella Financial Services LLP0$00.00%−11,252−100.0%Sold out
Spouting Rock Asset Management, LLC0$00.00%−10,619−100.0%Sold out
Caxton Associates LP0$00.00%−8,631−100.0%Sold out
Man Group plc0$00.00%–Sold out
Beach Investment Counsel Inc0$00.00%−6,555−100.0%Sold out
LMR Partners LLP0$00.00%−6,313−100.0%Sold out
Advisory Services Network, LLC0$00.00%−2,682−100.0%Sold out
Tucker Asset Management LLC0$00.00%−1,484−100.0%Sold out
Belpointe Asset Management LLC0$00.00%−867−100.0%Sold out
US Bancorp0$00.00%−217−100.0%Sold out
Aquatic Capital Management LLC0$00.00%−200−100.0%Sold out
Simplex Trading, LLC0$00.00%−60−100.0%Sold out
Investment Management of Virginia LLC––––Not filed