William Blair & Company
BELFA icon

William Blair & Company’s Bel Fuse Inc Class A BELFA Stock Holding History

William Blair & Company’s Portfolio BELFA Stock Details BELFA Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q1 		$90.1K Hold
500
– – ﹤0.01% 1609
2025
Q4 		$75.9K Hold
500
– – ﹤0.01% 1610
2025
Q3 		$58.2K Hold
500
– – ﹤0.01% 1619
2025
Q2 		$44.9K Hold
500
– – ﹤0.01% 1616
2025
Q1 		$36K Hold
500
– – ﹤0.01% 1621
2024
Q4 		$45K Hold
500
– – ﹤0.01% 1623
2024
Q3 		$49.7K Hold
500
– – ﹤0.01% 1631
2024
Q2 		$40.5K Hold
500
– – ﹤0.01% 1627
2024
Q1 		$35.4K Hold
500
– – ﹤0.01% 1634
2023
Q4 		$32.3K Hold
500
– – ﹤0.01% 1627
2023
Q3 		$23.2K Hold
500
– – ﹤0.01% 1668
2023
Q2 		$29K Hold
500
– – ﹤0.01% 1660
2023
Q1 		$18.2K Hold
500
– – ﹤0.01% 1688
2022
Q4 		$15.8K Hold
500
– – ﹤0.01% 1697
2022
Q3 		$14K Buy
+500
New +$13.8K ﹤0.01% 1721
2022
Q2 		– Sell
-500
Closed -$11K – 1864
2022
Q1 		$11K Buy
+500
New +$8.84K ﹤0.01% 1825

Other funds holding BELFA

HCM
Highbridge Capital Management New York $3.09B AUM 31.19% 1-Year Est. Return
Brown Advisory
Brown Advisory Baltimore, Maryland $60.9B AUM 15.24% 1-Year Est. Return
BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
Fidelity Investments
Fidelity Investments Boston, Massachusetts $1.9T AUM 41.92% 1-Year Est. Return
Renaissance Technologies
Renaissance Technologies New York $63.9B AUM 45.56% 1-Year Est. Return
GF
Gabelli Funds Rye, New York $14.8B AUM 32.24% 1-Year Est. Return
GI
GAMCO Investors Greenwich, Connecticut $10.2B AUM 30.27% 1-Year Est. Return
CCC
Cable Car Capital San Francisco, California $289M AUM 26.33% 1-Year Est. Return
VPM
Vanguard Portfolio Management Malvern, Pennsylvania $1.91T AUM
VCM
Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM

William Blair & Company's BELFA Position: Q1 2026 in Review

William Blair & Company held its Bel Fuse Inc Class A (BELFA) position steady in Q1 2026 at 500 shares worth $90.1K. The position accounts for ﹤0.01% of the portfolio, ranked #1609.

William Blair & Company first reported a position in BELFA in Q1 2022 and has held it in 16 quarters since. 93 funds tracked by Wall St. Rank hold BELFA as of Q1 2026.

  • William Blair & Company held 500 shares of Bel Fuse Inc Class A worth $90.1K as of Q1 2026.
  • William Blair & Company left its Bel Fuse Inc Class A share count unchanged in Q1 2026.
  • Bel Fuse Inc Class A made up ﹤0.01% of William Blair & Company's portfolio in Q1 2026, its #1609 holding.
  • William Blair & Company first reported a position in Bel Fuse Inc Class A in Q1 2022 and has held it in 16 quarters since.
  • 93 funds tracked by Wall St. Rank held Bel Fuse Inc Class A as of Q1 2026.

Based on William Blair & Company's 13F filing for Q1 2026, filed 8 May 2026.