Essex Investment Management’s ACM Research ACMR Stock Holding History

Essex Investment 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 Q1	$463K	Hold	11,770	–	–	0.07%	172
2025 Q4	$464K	Hold	11,770	–	–	0.07%	172
2025 Q3	$461K	Sell	11,770 -1,460	-11%	-$43.3K	0.07%	168
2025 Q2	$343K	Hold	13,230	–	–	0.06%	170
2025 Q1	$309K	Hold	13,230	–	–	0.06%	170
2024 Q4	$200K	Hold	13,230	–	–	0.04%	186
2024 Q3	$269K	Hold	13,230	–	–	0.05%	178
2024 Q2	$305K	Hold	13,230	–	–	0.06%	176
2024 Q1	$386K	Hold	13,230	–	–	0.08%	182
2023 Q4	$259K	Hold	13,230	–	–	0.05%	203
2023 Q3	$240K	Hold	13,230	–	–	0.04%	258
2023 Q2	$173K	Hold	13,230	–	–	0.02%	284
2023 Q1	$155K	Hold	13,230	–	–	0.02%	284
2022 Q4	$102K	Hold	13,230	–	–	0.02%	301
2022 Q3	$165K	Hold	13,230	–	–	0.03%	282
2022 Q2	$223K	Buy	+13,230	New	+$204K	0.04%	279

Other funds holding ACMR

BlackRock New York $6.73T AUM 46.02% 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 $3.37T AUM 44.26% 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

Essex Investment Management's ACMR Position: Q1 2026 in Review

Essex Investment Management held its ACM Research (ACMR) position steady in Q1 2026 at 11,770 shares worth $463K. The position accounts for 0.07% of the portfolio, ranked #172.

Essex Investment Management first reported a position in ACMR in Q2 2022 and has held it in 16 quarters since. The position peaked at $464K in Q4 2025. 300 funds tracked by Wall St. Rank hold ACMR as of Q1 2026.

Essex Investment Management held 11,770 shares of ACM Research worth $463K as of Q1 2026.
Essex Investment Management left its ACM Research share count unchanged in Q1 2026.
ACM Research made up 0.07% of Essex Investment Management's portfolio in Q1 2026, its #172 holding.
Essex Investment Management first reported a position in ACM Research in Q2 2022 and has held it in 16 quarters since.
Essex Investment Management's ACM Research position peaked at $464K in Q4 2025.
300 funds tracked by Wall St. Rank held ACM Research as of Q1 2026.

Based on Essex Investment Management's 13F filing for Q1 2026, filed 11 May 2026.