Optiver Holding
BELFB

Optiver Holding’s Bel Fuse Inc Class B BELFB Stock Holding History

Optiver Holding’s Portfolio BELFB Stock Details BELFB Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q1 		$10.7K Buy
54
+8
+17% +$1.67K ﹤0.01% 1207
2025
Q4 		$7.8K Sell
46
-46
-50% -$7.19K ﹤0.01% 1201
2025
Q3 		$13K Buy
+92
New +$11.7K ﹤0.01% 1142

Other funds holding BELFB

BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
T. Rowe Price Associates
T. Rowe Price Associates Baltimore, Maryland $865B AUM 30.76% 1-Year Est. Return
Janus Henderson Group
Janus Henderson Group London, United Kingdom $209B AUM 37.72% 1-Year Est. Return
Fidelity Investments
Fidelity Investments Boston, Massachusetts $1.9T AUM 41.92% 1-Year Est. Return
T. Rowe Price Investment Management
T. Rowe Price Investment Management Baltimore, Maryland $145B AUM 22.78% 1-Year Est. Return
VCM
Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM
WA
Wasatch Advisors Salt Lake City, Utah $15.3B AUM 25.06% 1-Year Est. Return
VPM
Vanguard Portfolio Management Malvern, Pennsylvania $1.91T AUM
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return
Dimensional Fund Advisors
Dimensional Fund Advisors Austin, Texas $481B AUM 30.42% 1-Year Est. Return

Optiver Holding's BELFB Position: Q1 2026 in Review

Optiver Holding increased its Bel Fuse Inc Class B (BELFB) stake by 17% in Q1 2026, buying an estimated $1.67K and bringing the position to 54 shares worth $10.7K. The position accounts for ﹤0.01% of the portfolio, ranked #1207.

Optiver Holding first reported a position in BELFB in Q3 2025 and has held it in 3 quarters since. The position peaked at $13K in Q3 2025. 233 funds tracked by Wall St. Rank hold BELFB as of Q1 2026.

  • Optiver Holding held 54 shares of Bel Fuse Inc Class B worth $10.7K as of Q1 2026.
  • Optiver Holding bought 8 Bel Fuse Inc Class B shares in Q1 2026, an estimated $1.67K.
  • Bel Fuse Inc Class B made up ﹤0.01% of Optiver Holding's portfolio in Q1 2026, its #1207 holding.
  • Optiver Holding first reported a position in Bel Fuse Inc Class B in Q3 2025 and has held it in 3 quarters since.
  • Optiver Holding's Bel Fuse Inc Class B position peaked at $13K in Q3 2025.
  • 233 funds tracked by Wall St. Rank held Bel Fuse Inc Class B as of Q1 2026.

Based on Optiver Holding's 13F filing for Q1 2026, filed 15 May 2026.