SEI Investments’s ACM Research ACMR Stock Holding History

SEI 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 Q3	$3.86M	Buy	47,741 +7,428	+18%	+$602K	﹤0.01%	1591
2026 Q2	$5.12M	Sell	40,313 -44,692	-53%	-$3.16M	﹤0.01%	1498
2026 Q1	$3.34M	Buy	85,005 +26,560	+45%	+$1.41M	﹤0.01%	1758
2025 Q4	$2.31M	Buy	58,445 +36,359	+165%	+$1.35M	﹤0.01%	1775
2025 Q3	$864K	Sell	22,086 -5,921	-21%	-$176K	﹤0.01%	2018
2025 Q2	$725K	Sell	28,007 -21,011	-43%	-$472K	﹤0.01%	2054
2025 Q1	$1.14M	Buy	+49,018	New	+$1.12M	﹤0.01%	1857
2024 Q3	–	Sell	-21,736	Closed	-$501K	–	2677
2024 Q2	$501K	Buy	21,736 +1,358	+7%	+$34.4K	﹤0.01%	2148
2024 Q1	$593K	Sell	20,378 -766	-4%	-$17.5K	﹤0.01%	2057
2023 Q4	$413K	Sell	21,144 -64,457	-75%	-$1.13M	﹤0.01%	2187
2023 Q3	$1.55M	Buy	85,601 +47,536	+125%	+$707K	﹤0.01%	1705
2023 Q2	$498K	Hold	38,065	–	–	﹤0.01%	2133
2023 Q1	$445K	Sell	38,065 -10,646	-22%	-$123K	﹤0.01%	2176
2022 Q4	$376K	Buy	48,711 +22,300	+84%	+$189K	﹤0.01%	2128
2022 Q3	$329K	Buy	+26,411	New	+$429K	﹤0.01%	2268
2020 Q3	–	Sell	-22,542	Closed	-$469K	–	2394
2020 Q2	$469K	Sell	22,542 -19,080	-46%	-$313K	﹤0.01%	1880
2020 Q1	$411K	Buy	+41,622	New	+$449K	﹤0.01%	1802

Other funds holding ACMR

Geode Capital Management Boston, Massachusetts $1.92T AUM 36.1% 1-Year Est. Return

Dimensional Fund Advisors Austin, Texas $551B AUM 33.95% 1-Year Est. Return

UBS Group Zurich, Switzerland $765B AUM 28.39% 1-Year Est. Return

Polunin Capital Partners London, United Kingdom $497M AUM 11.85% 1-Year Est. Return

Fidelity Investments Boston, Massachusetts $2.32T AUM 44.66% 1-Year Est. Return

Principal Financial Group Des Moines, Iowa $195B AUM 21.17% 1-Year Est. Return

Bank of New York Mellon New York $608B AUM 32.77% 1-Year Est. Return

Congress Asset Management Boston, Massachusetts $15.4B AUM 30.39% 1-Year Est. Return

Raiffeisen Bank International Vienna, Austria $8.69B AUM 38.11% 1-Year Est. Return

Mackenzie Financial Toronto Ontario, Ontario, Canada $91.6B AUM 30% 1-Year Est. Return

SEI Investments's ACMR Position: Q3 2026 in Review

SEI Investments increased its ACM Research (ACMR) stake by 18% in Q3 2026, buying an estimated $602K and bringing the position to 47,741 shares worth $3.86M. The position accounts for ﹤0.01% of the portfolio, ranked #1591.

SEI Investments first reported a position in ACMR in Q1 2020 and has held it in 17 quarters since. The position peaked at $5.12M in Q2 2026. 200 funds tracked by Wall St. Rank hold ACMR as of Q3 2026.

SEI Investments held 47,741 shares of ACM Research worth $3.86M as of Q3 2026.
SEI Investments bought 7,428 ACM Research shares in Q3 2026, an estimated $602K.
ACM Research made up ﹤0.01% of SEI Investments's portfolio in Q3 2026, its #1591 holding.
SEI Investments first reported a position in ACM Research in Q1 2020 and has held it in 17 quarters since.
SEI Investments's ACM Research position peaked at $5.12M in Q2 2026.
200 funds tracked by Wall St. Rank held ACM Research as of Q3 2026.

Based on SEI Investments's 13F filing for Q3 2026, filed 10 Nov 2026.