Jane Street
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Jane Street’s ACM Research ACMR Stock Holding History

Jane Street’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 		$15.4M Buy
391,100
+80,300
+26% +$4.26M ﹤0.01% 2031
2025
Q4 		$12.3M Buy
310,800
+21,700
+8% +$809K ﹤0.01% 2078
2025
Q3 		$11.3M Buy
289,100
+173,100
+149% +$5.14M ﹤0.01% 2261
2025
Q2 		$3M Sell
116,000
-73,100
-39% -$1.64M ﹤0.01% 3748
2025
Q1 		$4.41M Buy
189,100
+133,200
+238% +$3.04M ﹤0.01% 3111
2024
Q4 		$844K Sell
55,900
-43,100
-44% -$779K ﹤0.01% 5702
2024
Q3 		$2.01M Buy
99,000
+41,000
+71% +$786K ﹤0.01% 4464
2024
Q2 		$1.34M Sell
58,000
-144,400
-71% -$3.65M ﹤0.01% 5213
2024
Q1 		$5.9M Buy
202,400
+600
+0.3% +$13.7K ﹤0.01% 2400
2023
Q4 		$3.94M Buy
201,800
+1,100
+0.5% +$19.2K ﹤0.01% 3213
2023
Q3 		$3.63M Buy
200,700
+134,900
+205% +$2.01M ﹤0.01% 3081
2023
Q2 		$861K Buy
65,800
+52,100
+380% +$549K ﹤0.01% 5465
2023
Q1 		$160K Sell
13,700
-41,200
-75% -$476K ﹤0.01% 7973
2022
Q4 		$423K Sell
54,900
-15,000
-21% -$127K ﹤0.01% 6425
2022
Q3 		$871K Sell
69,900
-13,900
-17% -$226K ﹤0.01% 5659
2022
Q2 		$1.41M Sell
83,800
-54,100
-39% -$833K ﹤0.01% 4828
2022
Q1 		$2.85M Buy
137,900
+116,300
+538% +$2.93M ﹤0.01% 4052
2021
Q4 		$614K Sell
21,600
-123,000
-85% -$3.89M ﹤0.01% 6877
2021
Q3 		$5.3M Sell
144,600
-436,200
-75% -$13.3M ﹤0.01% 2626
2021
Q2 		$19.8M Buy
580,800
+418,200
+257% +$11.5M 0.01% 1082
2021
Q1 		$4.38M Buy
162,600
+129,000
+384% +$4.26M ﹤0.01% 2593
2020
Q4 		$910K Sell
33,600
-12,000
-26% -$307K ﹤0.01% 4812
2020
Q3 		$1.05M Buy
45,600
+21,300
+88% +$605K ﹤0.01% 4020
2020
Q2 		$505K Buy
+24,300
New +$399K ﹤0.01% 5073

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

Jane Street's ACMR Position: Q4 2025 in Review

Jane Street sold out of ACM Research (ACMR) in Q4 2025, closing a stake of 175,317 shares — an estimated $6.53M sold.

Jane Street first reported a position in ACMR in Q1 2020 and held it in 21 quarters. The position peaked at $11.1M in Q1 2025. 277 funds tracked by Wall St. Rank hold ACMR as of Q4 2025.

  • Jane Street reported no remaining ACM Research position as of Q4 2025 after selling out during the quarter.
  • Jane Street sold 175,317 ACM Research shares in Q4 2025, an estimated $6.53M.
  • Jane Street first reported a position in ACM Research in Q1 2020 and held it in 21 quarters.
  • Jane Street's ACM Research position peaked at $11.1M in Q1 2025.
  • 277 funds tracked by Wall St. Rank held ACM Research as of Q4 2025.

Based on Jane Street's 13F filing for Q4 2025, filed 12 Feb 2026.