Simplex Trading
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Simplex Trading’s ACM Research ACMR Stock Holding History

Simplex 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
Q1 		$704K Sell
17,900
-24,800
-58% -$1.32M ﹤0.01% 2873
2025
Q4 		$1.68M Sell
42,700
-149,100
-78% -$5.56M ﹤0.01% 2121
2025
Q3 		$7.5M Buy
191,800
+162,200
+548% +$4.82M ﹤0.01% 1158
2025
Q2 		$766K Sell
29,600
-27,000
-48% -$607K ﹤0.01% 3064
2025
Q1 		$1.32M Sell
56,600
-2,100
-4% -$48K ﹤0.01% 2435
2024
Q4 		$886K Sell
58,700
-72,300
-55% -$1.31M ﹤0.01% 2958
2024
Q3 		$2.66M Buy
131,000
+8,300
+7% +$159K ﹤0.01% 2032
2024
Q2 		$2.83M Sell
122,700
-102,100
-45% -$2.58M ﹤0.01% 1897
2024
Q1 		$6.55M Buy
224,800
+82,400
+58% +$1.89M ﹤0.01% 1394
2023
Q4 		$2.78M Sell
142,400
-86,800
-38% -$1.52M ﹤0.01% 2078
2023
Q3 		$4.15M Buy
229,200
+127,300
+125% +$1.89M ﹤0.01% 1477
2023
Q2 		$1.33M Buy
101,900
+44,000
+76% +$463K ﹤0.01% 2325
2023
Q1 		$677K Buy
57,900
+51,800
+849% +$599K ﹤0.01% 2965
2022
Q4 		$47K Sell
6,100
-9,500
-61% -$80.5K ﹤0.01% 5951
2022
Q3 		$194K Sell
15,600
-1,400
-8% -$22.8K ﹤0.01% 4651
2022
Q2 		$286K Sell
17,000
-17,600
-51% -$271K ﹤0.01% 4153
2022
Q1 		$715K Buy
34,600
+28,600
+477% +$720K ﹤0.01% 3373
2021
Q4 		$170K Sell
6,000
-117,000
-95% -$3.7M ﹤0.01% 5419
2021
Q3 		$4.18M Hold
123,000
– – ﹤0.01% 1363
2021
Q2 		$4.19M Buy
123,000
+122,904
+128,025% +$3.38M ﹤0.01% 1346
2021
Q1 		$258K Sell
96
-21
-18% -$694 ﹤0.01% 4336
2020
Q4 		$316K Buy
117
+24
+26% +$614 ﹤0.01% 3997
2020
Q3 		$214K Sell
93
-36
-28% -$1.02K ﹤0.01% 4025
2020
Q2 		$268K Sell
129
-3
-2% -$49 ﹤0.01% 3659
2020
Q1 		$130K Buy
+132
New +$1.42K ﹤0.01% 4084

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

Simplex Trading's ACMR Position: Q1 2026 in Review

Simplex Trading reduced its ACM Research (ACMR) stake by 78% in Q1 2026, selling an estimated $4.59M and leaving 24,464 shares worth $963K. The position accounts for ﹤0.01% of the portfolio, ranked #2536.

Simplex Trading first reported a position in ACMR in Q1 2020 and has held it in 19 quarters since. The position peaked at $4.38M in Q4 2025. 300 funds tracked by Wall St. Rank hold ACMR as of Q1 2026.

  • Simplex Trading held 24,464 shares of ACM Research worth $963K as of Q1 2026.
  • Simplex Trading sold 86,488 ACM Research shares in Q1 2026, an estimated $4.59M.
  • ACM Research made up ﹤0.01% of Simplex Trading's portfolio in Q1 2026, its #2536 holding.
  • Simplex Trading first reported a position in ACM Research in Q1 2020 and has held it in 19 quarters since.
  • Simplex Trading's ACM Research position peaked at $4.38M in Q4 2025.
  • 300 funds tracked by Wall St. Rank held ACM Research as of Q1 2026.

Based on Simplex Trading's 13F filing for Q1 2026, filed 14 May 2026.