Marshall Wace’s Bel Fuse Inc Class B BELFB Stock Holding History

Marshall Wace’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 Q2	$19.8M	Buy	+59,577	New	+$16.1M	0.02%	730
2025 Q4	–	Sell	-6,421	Closed	-$905K	–	2965
2025 Q3	$905K	Buy	+6,421	New	+$818K	﹤0.01%	1979
2023 Q3	–	Sell	-13,989	Closed	-$803K	–	2198
2023 Q2	$803K	Sell	13,989 -5,265	-27%	-$241K	﹤0.01%	1817
2023 Q1	$724K	Buy	+19,254	New	+$693K	﹤0.01%	1953
2022 Q3	–	Sell	-53,096	Closed	-$826K	–	3342
2022 Q2	$826K	Sell	53,096 -41,003	-44%	-$668K	﹤0.01%	2546
2022 Q1	$1.68M	Sell	94,099 -4,299	-4%	-$63.3K	﹤0.01%	2163
2021 Q4	$1.27M	Sell	98,398 -35,089	-26%	-$451K	﹤0.01%	2352
2021 Q3	$1.66M	Buy	+133,487	New	+$1.79M	0.01%	1682
2019 Q4	–	Sell	-60,663	Closed	-$912K	–	1697
2019 Q3	$912K	Buy	+60,663	New	+$840K	0.01%	965

Other funds holding BELFB

BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return

T. Rowe Price Associates Baltimore, Maryland $999B AUM 46.22% 1-Year Est. Return

Fidelity Investments Boston, Massachusetts $2.3T AUM 54.33% 1-Year Est. Return

Jupiter Topco New York $245B AUM

Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM

T. Rowe Price Investment Management Baltimore, Maryland $153B AUM 38.14% 1-Year Est. Return

Wasatch Advisors Salt Lake City, Utah $15.3B AUM 25.06% 1-Year Est. Return

Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM

Bank of New York Mellon New York $609B AUM 40.19% 1-Year Est. Return

Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return

Marshall Wace's BELFB Position: Q2 2026 in Review

Marshall Wace opened a new position in Bel Fuse Inc Class B (BELFB) in Q2 2026: 59,577 shares worth $19.8M. The stake represents 0.02% of the portfolio and ranks #730 among its holdings. This is a return to the name: Marshall Wace previously reported a position in BELFB as recently as Q3 2025.

Marshall Wace first reported a position in BELFB in Q3 2019 and has held it in 9 quarters since. 276 funds tracked by Wall St. Rank hold BELFB as of Q2 2026.

Marshall Wace held 59,577 shares of Bel Fuse Inc Class B worth $19.8M as of Q2 2026.
Bel Fuse Inc Class B was a new Marshall Wace position in Q2 2026.
Bel Fuse Inc Class B made up 0.02% of Marshall Wace's portfolio in Q2 2026, its #730 holding.
Marshall Wace first reported a position in Bel Fuse Inc Class B in Q3 2019 and has held it in 9 quarters since.
276 funds tracked by Wall St. Rank held Bel Fuse Inc Class B as of Q2 2026.

Based on Marshall Wace's 13F filing for Q2 2026, filed 13 Aug 2026.