LMR Partners’s ACM Research ACMR Stock Holding History

LMR Partners’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	$433K	Buy	+3,415	New	+$241K	﹤0.01%	1203
2024 Q3	–	Sell	-38,000	Closed	-$876K	–	1251
2024 Q2	$876K	Buy	+38,000	New	+$962K	0.01%	687
2022 Q2	–	Sell	-68,004	Closed	-$1.41M	–	1270
2022 Q1	$1.41M	Buy	68,004 +26,358	+63%	+$663K	0.02%	692
2021 Q4	$1.18M	Buy	41,646 +3,240	+8%	+$102K	0.01%	649
2021 Q3	$1.41M	Hold	38,406	–	–	0.02%	556
2021 Q2	$1.31M	Buy	38,406 +14,943	+64%	+$410K	0.02%	462
2021 Q1	$632K	Sell	23,463 -47,490	-67%	-$1.57M	0.02%	579
2020 Q4	$1.92M	Sell	70,953 -4,359	-6%	-$112K	0.03%	221
2020 Q3	$1.74M	Hold	75,312	–	–	0.04%	165
2020 Q2	$1.56M	Buy	+75,312	New	+$1.24M	0.04%	294

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

LMR Partners's ACMR Position: Q2 2026 in Review

LMR Partners opened a new position in ACM Research (ACMR) in Q2 2026: 3,415 shares worth $433K. The stake represents ﹤0.01% of the portfolio and ranks #1203 among its holdings. This is a return to the name: LMR Partners previously reported a position in ACMR as recently as Q2 2024.

LMR Partners first reported a position in ACMR in Q2 2020 and has held it in 10 quarters since. The position peaked at $1.92M in Q4 2020. 376 funds tracked by Wall St. Rank hold ACMR as of Q2 2026.

LMR Partners held 3,415 shares of ACM Research worth $433K as of Q2 2026.
ACM Research was a new LMR Partners position in Q2 2026.
ACM Research made up ﹤0.01% of LMR Partners's portfolio in Q2 2026, its #1203 holding.
LMR Partners first reported a position in ACM Research in Q2 2020 and has held it in 10 quarters since.
LMR Partners's ACM Research position peaked at $1.92M in Q4 2020.
376 funds tracked by Wall St. Rank held ACM Research as of Q2 2026.

Based on LMR Partners's 13F filing for Q2 2026, filed 14 Aug 2026.