Marshall Wace’s American Superconductor AMSC Stock Holding History

Marshall Wace’s Portfolio AMSC Stock Details AMSC Fund Activity

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2026 Q2	$2.21M	Buy	+53,261	New	+$2.41M	﹤0.01%	1807
2024 Q1	–	Sell	-105,909	Closed	-$1.18M	–	2408
2023 Q4	$1.18M	Buy	+105,909	New	+$895K	﹤0.01%	1418
2023 Q3	–	Sell	-29,760	Closed	-$186K	–	2160
2023 Q2	$186K	Buy	+29,760	New	+$145K	﹤0.01%	2253
2023 Q1	–	Sell	-69,669	Closed	-$256K	–	2618
2022 Q4	$256K	Sell	69,669 -14,072	-17%	-$55.1K	﹤0.01%	2615
2022 Q3	$366K	Buy	83,741 +11,829	+16%	+$61.2K	﹤0.01%	2866
2022 Q2	$372K	Buy	+71,912	New	+$417K	﹤0.01%	2937
2020 Q1	–	Sell	-9,692	Closed	-$76K	–	1608
2019 Q4	$76K	Buy	+9,692	New	+$78.1K	﹤0.01%	1496
2019 Q2	–	Sell	-230,225	Closed	-$2.96M	–	1320
2019 Q1	$2.96M	Buy	+230,225	New	+$3.13M	0.03%	635

Other funds holding AMSC

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

Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM

Barrow, Hanley, Mewhinney & Strauss Dallas, Texas $33B AUM 40.62% 1-Year Est. Return

UBS Group Zurich, Switzerland $786B AUM 40.34% 1-Year Est. Return

Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM

State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return

Goldman Sachs New York $1.15T AUM 47.82% 1-Year Est. Return

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

First Trust Advisors Wheaton, Illinois $170B AUM 46.21% 1-Year Est. Return

OAM

Oberweis Asset Management Lisle, Illinois $4.84B AUM 160.95% 1-Year Est. Return

Marshall Wace's AMSC Position: Q2 2026 in Review

Marshall Wace opened a new position in American Superconductor (AMSC) in Q2 2026: 53,261 shares worth $2.21M. The stake represents ﹤0.01% of the portfolio and ranks #1807 among its holdings. This is a return to the name: Marshall Wace previously reported a position in AMSC as recently as Q4 2023.

Marshall Wace first reported a position in AMSC in Q1 2019 and has held it in 8 quarters since. The position peaked at $2.96M in Q1 2019. 279 funds tracked by Wall St. Rank hold AMSC as of Q2 2026.

Marshall Wace held 53,261 shares of American Superconductor worth $2.21M as of Q2 2026.
American Superconductor was a new Marshall Wace position in Q2 2026.
American Superconductor made up ﹤0.01% of Marshall Wace's portfolio in Q2 2026, its #1807 holding.
Marshall Wace first reported a position in American Superconductor in Q1 2019 and has held it in 8 quarters since.
Marshall Wace's American Superconductor position peaked at $2.96M in Q1 2019.
279 funds tracked by Wall St. Rank held American Superconductor as of Q2 2026.

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