Citadel Advisors
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Citadel Advisors’s ACM Research ACMR Stock Holding History

Citadel Advisors’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 		$8M Buy
203,378
+60,356
+42% +$3.2M ﹤0.01% 3585
2025
Q4 		$5.64M Sell
143,022
-251,947
-64% -$9.39M ﹤0.01% 4103
2025
Q3 		$15.5M Buy
394,969
+190,945
+94% +$5.67M ﹤0.01% 2647
2025
Q2 		$5.28M Sell
204,024
-249,117
-55% -$5.6M ﹤0.01% 4014
2025
Q1 		$10.6M Buy
453,141
+97,400
+27% +$2.22M ﹤0.01% 2781
2024
Q4 		$5.37M Sell
355,741
-129,874
-27% -$2.35M ﹤0.01% 3842
2024
Q3 		$9.86M Sell
485,615
-201,058
-29% -$3.85M ﹤0.01% 2921
2024
Q2 		$15.8M Buy
686,673
+406,852
+145% +$10.3M ﹤0.01% 2249
2024
Q1 		$8.15M Buy
279,821
+181,828
+186% +$4.16M ﹤0.01% 3204
2023
Q4 		$1.91M Sell
97,993
-52,598
-35% -$920K ﹤0.01% 5436
2023
Q3 		$2.73M Sell
150,591
-157,536
-51% -$2.34M ﹤0.01% 4657
2023
Q2 		$4.03M Sell
308,127
-552,802
-64% -$5.82M ﹤0.01% 3975
2023
Q1 		$10.1M Buy
860,929
+515,526
+149% +$5.96M ﹤0.01% 2810
2022
Q4 		$2.66M Buy
345,403
+271,166
+365% +$2.3M ﹤0.01% 4949
2022
Q3 		$925K Buy
+74,237
New +$1.21M ﹤0.01% 7170
2022
Q2 		– Sell
-242,973
Closed -$3.74M – 12766
2022
Q1 		$5.03M Sell
242,973
-57,021
-19% -$1.44M ﹤0.01% 4167
2021
Q4 		$8.53M Buy
299,994
+238,119
+385% +$7.53M ﹤0.01% 3336
2021
Q3 		$2.27M Sell
61,875
-130,356
-68% -$3.99M ﹤0.01% 6034
2021
Q2 		$6.55M Sell
192,231
-187,104
-49% -$5.14M ﹤0.01% 3878
2021
Q1 		$10.2M Buy
379,335
+327,507
+632% +$10.8M ﹤0.01% 2933
2020
Q4 		$1.4M Sell
51,828
-20,253
-28% -$518K ﹤0.01% 6076
2020
Q3 		$1.66M Buy
72,081
+8,877
+14% +$252K ﹤0.01% 5075
2020
Q2 		$1.31M Sell
63,204
-45,207
-42% -$742K ﹤0.01% 5330
2020
Q1 		$1.07M Sell
108,411
-9,054
-8% -$97.6K ﹤0.01% 5215
2019
Q4 		$722K Sell
117,465
-82,287
-41% -$405K ﹤0.01% 6189
2019
Q3 		$923K Buy
199,752
+79,419
+66% +$417K ﹤0.01% 5733
2019
Q2 		$626K Buy
+120,333
New +$697K ﹤0.01% 6463

Other funds holding ACMR

BlackRock
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
State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return
WCM Investment Management
WCM Investment Management Laguna Beach, California $43.8B AUM 42.28% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return
Morgan Stanley
Morgan Stanley New York $1.66T AUM 25.57% 1-Year Est. Return
Janus Henderson Group
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

Citadel Advisors's ACMR Position: Q1 2026 in Review

Citadel Advisors increased its ACM Research (ACMR) stake by 42% in Q1 2026, buying an estimated $3.2M and bringing the position to 203,378 shares worth $8M. The position accounts for ﹤0.01% of the portfolio, ranked #3585.

Citadel Advisors first reported a position in ACMR in Q2 2019 and has held it in 27 quarters since. The position peaked at $15.8M in Q2 2024. 300 funds tracked by Wall St. Rank hold ACMR as of Q1 2026.

  • Citadel Advisors held 203,378 shares of ACM Research worth $8M as of Q1 2026.
  • Citadel Advisors bought 60,356 ACM Research shares in Q1 2026, an estimated $3.2M.
  • ACM Research made up ﹤0.01% of Citadel Advisors's portfolio in Q1 2026, its #3585 holding.
  • Citadel Advisors first reported a position in ACM Research in Q2 2019 and has held it in 27 quarters since.
  • Citadel Advisors's ACM Research position peaked at $15.8M in Q2 2024.
  • 300 funds tracked by Wall St. Rank held ACM Research as of Q1 2026.

Based on Citadel Advisors's 13F filing for Q1 2026, filed 15 May 2026.