Group One Trading
ACMR icon

Group One Trading’s ACM Research ACMR Stock Holding History

Group One Trading’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 		$10.5M Sell
130,007
-27,049
-17% -$2.19M 0.01% 904
2026
Q2 		$19.9M Buy
157,056
+65,629
+72% +$4.64M 0.03% 541
2026
Q1 		$3.6M Sell
91,427
-15,686
-15% -$833K 0.01% 1560
2025
Q4 		$4.23M Sell
107,113
-28,743
-21% -$1.07M 0.01% 1658
2025
Q3 		$5.32M Buy
135,856
+107,402
+377% +$3.19M 0.01% 1426
2025
Q2 		$737K Buy
28,454
+4,711
+20% +$106K ﹤0.01% 3048
2025
Q1 		$554K Sell
23,743
-16,613
-41% -$379K ﹤0.01% 2992
2024
Q4 		$609K Buy
40,356
+27,560
+215% +$498K ﹤0.01% 3006
2024
Q3 		$260K Buy
12,796
+1,158
+10% +$22.2K ﹤0.01% 3388
2024
Q2 		$268K Buy
+11,638
New +$294K ﹤0.01% 3143
2023
Q4 		– Sell
-4,972
Closed -$86.9K – 7289
2023
Q3 		$90K Buy
+4,972
New +$73.9K ﹤0.01% 4551
2022
Q2 		– Sell
-332,962
Closed -$5.13M – 7711
2022
Q1 		$6.89M Buy
+332,962
New +$8.38M 0.01% 1280
2021
Q2 		– Sell
-102,453
Closed -$2.81M – 8075
2021
Q1 		$2.76M Buy
102,453
+94,824
+1,243% +$3.13M ﹤0.01% 2108
2020
Q4 		$207K Sell
7,629
-62,532
-89% -$1.6M ﹤0.01% 4032
2020
Q3 		$1.62M Buy
+70,161
New +$1.99M 0.01% 1786

Other funds holding ACMR

Capital World Investors
Capital World Investors Los Angeles, California $824B AUM 37.44% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $3.44T AUM 36.12% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.92T AUM 36.1% 1-Year Est. Return
Dimensional Fund Advisors
Dimensional Fund Advisors Austin, Texas $551B AUM 33.95% 1-Year Est. Return
UBS Group
UBS Group Zurich, Switzerland $765B AUM 28.39% 1-Year Est. Return
Polunin Capital Partners
Polunin Capital Partners London, United Kingdom $497M AUM 11.85% 1-Year Est. Return
Capital International Investors
Capital International Investors Los Angeles, California $483B AUM 27.72% 1-Year Est. Return
Fidelity Investments
Fidelity Investments Boston, Massachusetts $2.32T AUM 44.66% 1-Year Est. Return
Principal Financial Group
Principal Financial Group Des Moines, Iowa $195B AUM 21.17% 1-Year Est. Return
Bank of New York Mellon
Bank of New York Mellon New York $608B AUM 32.77% 1-Year Est. Return

Group One Trading's ACMR Position: Q3 2026 in Review

Group One Trading reduced its ACM Research (ACMR) stake by 17% in Q3 2026, selling an estimated $2.19M and leaving 130,007 shares worth $10.5M. The position accounts for 0.01% of the portfolio, ranked #904.

Group One Trading first reported a position in ACMR in Q3 2020 and has held it in 15 quarters since. The position peaked at $19.9M in Q2 2026. 236 funds tracked by Wall St. Rank hold ACMR as of Q3 2026.

  • Group One Trading held 130,007 shares of ACM Research worth $10.5M as of Q3 2026.
  • Group One Trading sold 27,049 ACM Research shares in Q3 2026, an estimated $2.19M.
  • ACM Research made up 0.01% of Group One Trading's portfolio in Q3 2026, its #904 holding.
  • Group One Trading first reported a position in ACM Research in Q3 2020 and has held it in 15 quarters since.
  • Group One Trading's ACM Research position peaked at $19.9M in Q2 2026.
  • 236 funds tracked by Wall St. Rank held ACM Research as of Q3 2026.

Based on Group One Trading's 13F filing for Q3 2026, filed 10 Nov 2026.