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Pertento Partners’s ACM Research ACMR Stock Holding History

Pertento Partners’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
Q3 		– Sell
-1,024,632
Closed -$26.5M – 17
2025
Q2 		$26.5M Hold
1,024,632
– – 2.37% 17
2025
Q1 		$23.9M Sell
1,024,632
-160,405
-14% -$3.66M 2.5% 18
2024
Q4 		$17.9M Buy
1,185,037
+215,744
+22% +$3.9M 1.51% 23
2024
Q3 		$19.7M Hold
969,293
– – 2.17% 20
2024
Q2 		$22.4M Buy
969,293
+173,998
+22% +$4.4M 2.26% 18
2024
Q1 		$23.2M Sell
795,295
-289,738
-27% -$6.63M 4.29% 12
2023
Q4 		$21.2M Sell
1,085,033
-110,431
-9% -$1.93M 3.55% 14
2023
Q3 		$21.6M Buy
1,195,464
+39,207
+3% +$583K 3.93% 14
2023
Q2 		$15.1M Buy
1,156,257
+268,828
+30% +$2.83M 3.14% 16
2023
Q1 		$10.4M Buy
+887,429
New +$10.3M 2.58% 16

Other funds holding ACMR

BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
Vanguard Group
Vanguard Group Malvern, Pennsylvania $6.9T AUM 27.45% 1-Year Est. Return
LSV Asset Management
LSV Asset Management Chicago, Illinois $46.4B AUM 27.74% 1-Year Est. Return
TC
Triata Capital Hong Kong $552M AUM 2.89% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return
SAM
Southeastern Asset Management Memphis, Tennessee $2.03B AUM 7.06% 1-Year Est. Return
Mitsubishi UFJ Trust & Banking
Mitsubishi UFJ Trust & Banking Tokyo, Japan $40.6B AUM 25.18% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return
Federated Hermes
Federated Hermes Pittsburgh, Pennsylvania $61.5B AUM 30.7% 1-Year Est. Return
BBCM
Broad Bay Capital Management New York $1.18B AUM 65.45% 1-Year Est. Return

Pertento Partners's ACMR Position: Q3 2025 in Review

Pertento Partners sold out of ACM Research (ACMR) in Q3 2025, closing a stake of 1,024,632 shares — an estimated $26.5M sold.

Pertento Partners first reported a position in ACMR in Q1 2023 and held it in 10 quarters. The position peaked at $26.5M in Q2 2025. 258 funds tracked by Wall St. Rank hold ACMR as of Q3 2025.

  • Pertento Partners reported no remaining ACM Research position as of Q3 2025 after selling out during the quarter.
  • Pertento Partners sold 1,024,632 ACM Research shares in Q3 2025, an estimated $26.5M.
  • Pertento Partners first reported a position in ACM Research in Q1 2023 and held it in 10 quarters.
  • Pertento Partners's ACM Research position peaked at $26.5M in Q2 2025.
  • 258 funds tracked by Wall St. Rank held ACM Research as of Q3 2025.

Based on Pertento Partners's 13F filing for Q3 2025, filed 13 Nov 2025.