Two Sigma Investments’s ACM Research ACMR Stock Holding History

Two Sigma Investments’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 Q1	$232K	Buy	+5,900	New	+$313K	﹤0.01%	4220
2022 Q1	–	Sell	-39,000	Closed	-$1.11M	–	2557
2021 Q4	$1.11M	Buy	39,000 +9,300	+31%	+$294K	﹤0.01%	2458
2021 Q3	$1.09M	Sell	29,700 -3,600	-11%	-$110K	﹤0.01%	2541
2021 Q2	$1.14M	Buy	33,300 +19,500	+141%	+$536K	﹤0.01%	2367
2021 Q1	$372K	Buy	+13,800	New	+$456K	﹤0.01%	3173

Other funds holding ACMR

BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return

VCM

Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM

VPM

Vanguard Portfolio Management Malvern, Pennsylvania $1.91T AUM

State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return

WCM Investment Management Laguna Beach, California $43.8B AUM 42.28% 1-Year Est. Return

Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return

Morgan Stanley New York $1.66T AUM 25.57% 1-Year Est. Return

Janus Henderson Group London, United Kingdom $209B AUM 37.72% 1-Year Est. Return

VARA

Value Aligned Research Advisors Princeton, New Jersey $20.7B AUM 292.88% 1-Year Est. Return

PCP

Polunin Capital Partners London, United Kingdom $407M AUM 55.12% 1-Year Est. Return

Two Sigma Investments's ACMR Position: Q1 2026 in Review

Two Sigma Investments opened a new position in ACM Research (ACMR) in Q1 2026: 52,416 shares worth $2.06M. The stake represents ﹤0.01% of the portfolio and ranks #2737 among its holdings. This is a return to the name: Two Sigma Investments previously reported a position in ACMR as recently as Q3 2025.

Two Sigma Investments first reported a position in ACMR in Q2 2019 and has held it in 14 quarters since. The position peaked at $12.8M in Q1 2024. 300 funds tracked by Wall St. Rank hold ACMR as of Q1 2026.

Two Sigma Investments held 52,416 shares of ACM Research worth $2.06M as of Q1 2026.
ACM Research was a new Two Sigma Investments position in Q1 2026.
ACM Research made up ﹤0.01% of Two Sigma Investments's portfolio in Q1 2026, its #2737 holding.
Two Sigma Investments first reported a position in ACM Research in Q2 2019 and has held it in 14 quarters since.
Two Sigma Investments's ACM Research position peaked at $12.8M in Q1 2024.
300 funds tracked by Wall St. Rank held ACM Research as of Q1 2026.

Based on Two Sigma Investments's 13F filing for Q1 2026, filed 15 May 2026.