What smart money is saying about Bel Fuse
3 funds in our archive have pitched Bel Fuse — most recently Ballast Portfolio in June 2026.
Bel Fuse Inc. specializes in creating cutting-edge power management, circuit protection, and interconnect solutions. These critical components are essential for advancing modern industrial operations and driving innovation in data-centric fields. The company serves a broad spectrum of industries, including data infrastructure, manufacturing, healthcare, semiconductor production, and transportation, providing reliable and robust products backed by a long-standing tradition of engineering excellence.
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Position history
Between Q4 2024 and Q3 2026, 2 fund letters reported a position in Bel Fuse, with no move described.
| Quarter | Letters | Bought | Sold | Theses |
|---|---|---|---|---|
| Q3 2026 | 1 | 0 | 0 | 0 |
| Q2 2026 | 1 | 0 | 0 | 1 |
| Q3 2025 | 0 | 0 | 0 | 1 |
| Q4 2024 | 0 | 0 | 0 | 1 |
Fund activity · 2 positions
- July 2026
“Results were broad-based and included notable gains from several long-term holdings like Bel Fuse, Butler National, and Monarch Cement.”
Bel Fuse - HoldsBallast PortfolioJune 2026
“Bel Fuse (BELFB) designs and manufactures critical electronic components – power conversion and protection modules, high-speed connectors, and magnetic components – that sit at the heart of high- density AI compute racks and networking equipment.”
Bel Fuse
Also mentioned · 1
These funds discuss Bel Fuse — as a competitor, benchmark or comparable — without disclosing a position in it.
- MentionedGreystone Capital Partners LPJune 2026
“Consider our investments in Limbach, APi Group, Bel Fuse, and Secure Waste Infrastructure.”
Bel Fuse
Fund coverage · 3 theses
- Ballast PortfolioJune 2026
Bel Fuse makes critical electronic components for AI compute and networking, with solid free cash flow, a conservative balance sheet, and a valuation that still does not fully reflect the AI infrastructure wave.
Read the full thesis - Merion RoadSeptember 2025
Bel Fuse offers capital structure arbitrage through a widened Class A discount, governance catalysts, management improvements, and limited downside to parity.
Read the full thesis - Greystone Capital ManagementDecember 2024
Bel Fuse is positioned for significant growth following a successful turnaround and a strategic acquisition of Enercon Technologies, which enhances its market presence and earnings potential.
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