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.
| Quarter | Holders | Value |
|---|---|---|
| Q2 2026 | 276 | $4.18B |
| Q1 2026 | 235 | $2.05B |
| Q4 2025 | 207 | $1.72B |
| Q3 2025 | 197 | $1.31B |
| Q2 2025 | 174 | $941.8M |
| Q1 2025 | 164 | $689.3M |
| Q4 2024 | 168 | $714.9M |
| Q3 2024 | 163 | $656.5M |
| Q2 2024 | 153 | $539.8M |
| Q1 2024 | 147 | $456.7M |
| Q4 2023 | 146 | $491.0M |
| Q3 2023 | 134 | $333.4M |
| Q2 2023 | 126 | $412.5M |
| Q1 2023 | 96 | $250.6M |
| Q4 2022 | 90 | $205.7M |
| Q3 2022 | 83 | $160.2M |
| Q2 2022 | 61 | $95.9M |
| Q1 2022 | 70 | $111.9M |
| Q4 2021 | 67 | $79.4M |
| Q3 2021 | 82 | $79.1M |
| Q2 2021 | 82 | $107.4M |
| Q1 2021 | 88 | $155.6M |
Institutions, Q4 2025
Shares, value and share of portfolio for each institution holding Bel Fuse Inc; share changes are against Q3 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Wasatch Advisors Inc | 410,487 | $69.6M | 0.41% | +174,969+74.3% | Added |
| T. Rowe Price Investment Management, Inc. | 519,005 | $88.0M | 0.06% | +161,736+45.3% | Added |
| Janus Henderson Group PLC | 619,337 | $105.0M | 0.05% | +99,834+19.2% | Added |
| FMR LLC | 667,676 | $113.3M | 0.01% | +57,244+9.4% | Added |
| Price T Rowe Associates Inc | 834,261 | $141.5M | 0.02% | +355,563+74.3% | Added |
| BlackRock, Inc. | 866,066 | $146.9M | 0.00% | +27,634+3.3% | Added |
| Vanguard Group Inc | 908,717 | $154.1M | 0.00% | +685+0.1% | Added |
| Jane Street Group, LLC | 0 | $0 | 0.00% | −72,480−100.0% | Sold out |
| Tudor Investment Corp Et Al | 0 | $0 | 0.00% | −19,425−100.0% | Sold out |
| Potrero Capital Research LLC | 0 | $0 | 0.00% | −12,676−100.0% | Sold out |
| Quantbot Technologies LP | 0 | $0 | 0.00% | −11,804−100.0% | Sold out |
| CenterBook Partners LP | 0 | $0 | 0.00% | −9,986−100.0% | Sold out |
| Two Sigma Investments, LP | 0 | $0 | 0.00% | −9,242−100.0% | Sold out |
| Squarepoint Ops LLC | 0 | $0 | 0.00% | −8,991−100.0% | Sold out |
| Millennium Management LLC | 0 | $0 | 0.00% | −7,246−100.0% | Sold out |
| CWM Advisors, LLC | 0 | $0 | 0.00% | −7,023−100.0% | Sold out |
| Formula Growth Ltd | 0 | $0 | 0.00% | −7,000−100.0% | Sold out |
| Marshall Wace, LLP | 0 | $0 | 0.00% | −6,421−100.0% | Sold out |
| Balyasny Asset Management LLC | 0 | $0 | 0.00% | −6,267−100.0% | Sold out |
| Engineers Gate Manager LP | 0 | $0 | 0.00% | −4,108−100.0% | Sold out |
| Semanteon Capital Management, LP | 0 | $0 | 0.00% | −3,996−100.0% | Sold out |
| Navellier & Associates Inc | 0 | $0 | 0.00% | −3,308−100.0% | Sold out |
| Gabelli Funds LLC | 0 | $0 | 0.00% | −3,264−100.0% | Sold out |
| Mackenzie Financial Corp | 0 | $0 | 0.00% | −2,794−100.0% | Sold out |
| Kovitz Investment Group Partners, LLC | 0 | $0 | 0.00% | −2,362−100.0% | Sold out |
| Trexquant Investment LP | 0 | $0 | 0.00% | −2,303−100.0% | Sold out |
| Omers Administration Corp | 0 | $0 | 0.00% | −1,600−100.0% | Sold out |
| Canada Pension Plan Investment Board | 0 | $0 | 0.00% | −1,000−100.0% | Sold out |
| Ameritas Advisory Services, LLC | 0 | $0 | 0.00% | −500−100.0% | Sold out |
| Principal Securities, Inc. | 0 | $0 | 0.00% | −173−100.0% | Sold out |
| Quarry LP | 0 | $0 | 0.00% | −28−100.0% | Sold out |
| Isthmus Partners, LLC | 0 | $0 | 0.00% | −27,355−100.0% | Sold out |
| Tortoise Investment Management, LLC | 0 | $0 | 0.00% | −6−100.0% | Sold out |
| Rise Advisors, LLC | 0 | $0 | 0.00% | −5−100.0% | Sold out |
| Creekmur Asset Management LLC | – | – | – | – | Not filed |