Prelude Capital Management’s ACM Research ACMR Stock Holding History

Prelude Capital Management’s Portfolio ACMR Stock Details ACMR Fund Activity

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2026 Q2	$426K	Sell	3,355 -5,041	-60%	-$356K	0.03%	595
2026 Q1	$330K	Sell	8,396 -487	-5%	-$25.9K	0.03%	670
2025 Q4	$350K	Buy	8,883 +1,827	+26%	+$68.1K	0.03%	707
2025 Q3	$276K	Buy	+7,056	New	+$209K	0.02%	773
2025 Q1	–	Sell	-10,465	Closed	-$158K	–	1151
2024 Q4	$158K	Buy	+10,465	New	+$189K	0.01%	1040
2024 Q1	–	Sell	-442,190	Closed	-$8.64M	–	1287
2023 Q4	$8.64M	Buy	+442,190	New	+$7.73M	0.57%	23
2023 Q1	–	Sell	-16,000	Closed	-$123K	–	1146
2022 Q4	$123K	Buy	+16,000	New	+$136K	0.01%	1040
2022 Q1	–	Sell	-40,845	Closed	-$1.16M	–	1753
2021 Q4	$1.16M	Buy	40,845 +4,380	+12%	+$138K	0.03%	535
2021 Q3	$1.34M	Buy	+36,465	New	+$1.12M	0.03%	447
2020 Q4	–	Sell	-16,611	Closed	-$383K	–	1224
2020 Q3	$383K	Buy	16,611 +4,353	+36%	+$124K	0.02%	496
2020 Q2	$255K	Sell	12,258 -58,152	-83%	-$954K	0.01%	666
2020 Q1	$695K	Buy	70,410 +69,210	+5,768%	+$746K	0.05%	268
2019 Q4	$7K	Buy	+1,200	New	+$5.9K	﹤0.01%	1738
2019 Q3	–	Sell	-300	Closed	-$2K	–	1667
2019 Q2	$2K	Buy	+300	New	+$1.74K	﹤0.01%	1565

Other funds holding ACMR

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

Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM

Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM

Capital World Investors Los Angeles, California $846B AUM 46.74% 1-Year Est. Return

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

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

Invesco Atlanta, Georgia $1.26T AUM 61.52% 1-Year Est. Return

VARA

Value Aligned Research Advisors Princeton, New Jersey $40.1B AUM 376.19% 1-Year Est. Return

WFM Asia Road Town, Tortola, British Virgin Islands $663M AUM 15.46% 1-Year Est. Return

Dimensional Fund Advisors Austin, Texas $552B AUM 44.19% 1-Year Est. Return

Prelude Capital Management's ACMR Position: Q2 2026 in Review

Prelude Capital Management reduced its ACM Research (ACMR) stake by 60% in Q2 2026, selling an estimated $356K and leaving 3,355 shares worth $426K. The position accounts for 0.03% of the portfolio, ranked #595.

Prelude Capital Management first reported a position in ACMR in Q2 2019 and has held it in 14 quarters since. The position peaked at $8.64M in Q4 2023. 375 funds tracked by Wall St. Rank hold ACMR as of Q2 2026.

Prelude Capital Management held 3,355 shares of ACM Research worth $426K as of Q2 2026.
Prelude Capital Management sold 5,041 ACM Research shares in Q2 2026, an estimated $356K.
ACM Research made up 0.03% of Prelude Capital Management's portfolio in Q2 2026, its #595 holding.
Prelude Capital Management first reported a position in ACM Research in Q2 2019 and has held it in 14 quarters since.
Prelude Capital Management's ACM Research position peaked at $8.64M in Q4 2023.
375 funds tracked by Wall St. Rank held ACM Research as of Q2 2026.

Based on Prelude Capital Management's 13F filing for Q2 2026, filed 14 Aug 2026.