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
2025
Q4 		– Sell
-175,317
Closed -$6.53M – 10971
2025
Q3 		$6.86M Sell
175,317
-84,703
-33% -$2.51M ﹤0.01% 2947
2025
Q2 		$6.73M Sell
260,020
-216,069
-45% -$4.86M ﹤0.01% 2619
2025
Q1 		$11.1M Buy
476,089
+435,294
+1,067% +$9.94M ﹤0.01% 1859
2024
Q4 		$616K Sell
40,795
-66,334
-62% -$1.2M ﹤0.01% 6331
2024
Q3 		$2.17M Buy
107,129
+8,079
+8% +$155K ﹤0.01% 4306
2024
Q2 		$2.28M Sell
99,050
-93,649
-49% -$2.37M ﹤0.01% 4256
2024
Q1 		$5.62M Buy
192,699
+135,609
+238% +$3.1M ﹤0.01% 2463
2023
Q4 		$1.12M Buy
+57,090
New +$998K ﹤0.01% 5362
2023
Q2 		– Sell
-81,147
Closed -$855K – 8593
2023
Q1 		$949K Buy
81,147
+1,078
+1% +$12.5K ﹤0.01% 5091
2022
Q4 		$617K Buy
80,069
+60,659
+313% +$514K ﹤0.01% 5775
2022
Q3 		$242K Sell
19,410
-539
-3% -$8.77K ﹤0.01% 7885
2022
Q2 		$336K Buy
19,949
+1,834
+10% +$28.3K ﹤0.01% 7418
2022
Q1 		$375K Sell
18,115
-7,421
-29% -$187K ﹤0.01% 8007
2021
Q4 		$726K Sell
25,536
-130,173
-84% -$4.12M ﹤0.01% 6563
2021
Q3 		$5.71M Buy
155,709
+121,578
+356% +$3.72M ﹤0.01% 2531
2021
Q2 		$1.16M Sell
34,131
-14,658
-30% -$403K ﹤0.01% 5505
2021
Q1 		$1.31M Buy
48,789
+33,738
+224% +$1.12M ﹤0.01% 4915
2020
Q4 		$408K Sell
15,051
-211,845
-93% -$5.42M ﹤0.01% 6012
2020
Q3 		$5.23M Buy
226,896
+88,557
+64% +$2.52M ﹤0.01% 1801
2020
Q2 		$2.88M Buy
138,339
+113,181
+450% +$1.86M ﹤0.01% 2571
2020
Q1 		$248K Buy
+25,158
New +$271K ﹤0.01% 4422

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.