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 		$929K Sell
23,600
-459,800
-95% -$24.4M ﹤0.01% 6675
2025
Q4 		$19.1M Sell
483,400
-9,300
-2% -$347K ﹤0.01% 1664
2025
Q3 		$19.3M Buy
492,700
+29,200
+6% +$867K ﹤0.01% 1695
2025
Q2 		$12M Sell
463,500
-43,400
-9% -$976K ﹤0.01% 1937
2025
Q1 		$11.8M Buy
506,900
+492,000
+3,302% +$11.2M ﹤0.01% 1793
2024
Q4 		$225K Buy
14,900
+400
+3% +$7.23K ﹤0.01% 8216
2024
Q3 		$294K Sell
14,500
-83,000
-85% -$1.59M ﹤0.01% 8065
2024
Q2 		$2.25M Sell
97,500
-103,700
-52% -$2.62M ﹤0.01% 4278
2024
Q1 		$5.86M Buy
+201,200
New +$4.61M ﹤0.01% 2409
2023
Q4 		– Sell
-17,000
Closed -$308K – 9109
2023
Q3 		$308K Buy
+17,000
New +$253K ﹤0.01% 7019
2023
Q2 		– Sell
-30,800
Closed -$360K – 8594
2023
Q1 		$360K Buy
+30,800
New +$356K ﹤0.01% 6882
2022
Q3 		– Sell
-20,800
Closed -$350K – 9603
2022
Q2 		$350K Sell
20,800
-31,900
-61% -$491K ﹤0.01% 7349
2022
Q1 		$1.09M Buy
52,700
+37,400
+244% +$941K ﹤0.01% 5950
2021
Q4 		$435K Sell
15,300
-786,600
-98% -$24.9M ﹤0.01% 7508
2021
Q3 		$29.4M Buy
801,900
+756,600
+1,670% +$23.1M 0.01% 872
2021
Q2 		$1.54M Sell
45,300
-69,300
-60% -$1.9M ﹤0.01% 4862
2021
Q1 		$3.09M Buy
114,600
+63,000
+122% +$2.08M ﹤0.01% 3187
2020
Q4 		$1.4M Sell
51,600
-851,700
-94% -$21.8M ﹤0.01% 4121
2020
Q3 		$20.8M Buy
903,300
+120,600
+15% +$3.43M 0.01% 759
2020
Q2 		$16.3M Buy
+782,700
New +$12.8M 0.01% 861

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.