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 		$2.74M Sell
69,600
-119,100
-63% -$6.32M ﹤0.01% 5444
2025
Q4 		$7.44M Sell
188,700
-235,400
-56% -$8.77M ﹤0.01% 3669
2025
Q3 		$16.6M Buy
424,100
+95,600
+29% +$2.84M ﹤0.01% 2578
2025
Q2 		$8.51M Buy
328,500
+75,100
+30% +$1.69M ﹤0.01% 3265
2025
Q1 		$5.91M Buy
253,400
+47,700
+23% +$1.09M ﹤0.01% 3618
2024
Q4 		$3.11M Sell
205,700
-47,000
-19% -$849K ﹤0.01% 4782
2024
Q3 		$5.13M Buy
252,700
+24,500
+11% +$470K ﹤0.01% 3895
2024
Q2 		$5.26M Buy
228,200
+110,200
+93% +$2.79M ﹤0.01% 3677
2024
Q1 		$3.44M Buy
118,000
+26,200
+29% +$600K ﹤0.01% 4563
2023
Q4 		$1.79M Buy
91,800
+26,600
+41% +$465K ﹤0.01% 5556
2023
Q3 		$1.18M Buy
65,200
+27,900
+75% +$415K ﹤0.01% 6229
2023
Q2 		$488K Sell
37,300
-22,100
-37% -$233K ﹤0.01% 7999
2023
Q1 		$695K Buy
59,400
+21,300
+56% +$246K ﹤0.01% 7591
2022
Q4 		$294K Buy
38,100
+14,000
+58% +$119K ﹤0.01% 9368
2022
Q3 		$300K Buy
24,100
+3,300
+16% +$53.7K ﹤0.01% 9582
2022
Q2 		$350K Sell
20,800
-138,200
-87% -$2.13M ﹤0.01% 9459
2022
Q1 		$3.29M Buy
159,000
+92,400
+139% +$2.33M ﹤0.01% 4993
2021
Q4 		$1.89M Sell
66,600
-178,500
-73% -$5.64M ﹤0.01% 6381
2021
Q3 		$8.99M Buy
245,100
+128,700
+111% +$3.94M ﹤0.01% 3252
2021
Q2 		$3.97M Sell
116,400
-112,200
-49% -$3.08M ﹤0.01% 4954
2021
Q1 		$6.16M Buy
228,600
+159,000
+228% +$5.26M ﹤0.01% 3825
2020
Q4 		$1.89M Sell
69,600
-72,600
-51% -$1.86M ﹤0.01% 5460
2020
Q3 		$3.27M Sell
142,200
-4,500
-3% -$128K ﹤0.01% 3840
2020
Q2 		$3.05M Buy
146,700
+87,300
+147% +$1.43M ﹤0.01% 3842
2020
Q1 		$586K Buy
+59,400
New +$640K ﹤0.01% 6202

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.