Mariner
ACMR icon

Mariner’s ACM Research ACMR Stock Holding History

Mariner’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
-7,167
Closed -$280K – 3528
2025
Q3 		$280K Sell
7,167
-3,431
-32% -$102K ﹤0.01% 2867
2025
Q2 		$274K Buy
+10,598
New +$238K ﹤0.01% 2787
2025
Q1 		– Sell
-24,239
Closed -$366K – 3430
2024
Q4 		$366K Buy
24,239
+8,164
+51% +$148K ﹤0.01% 2445
2024
Q3 		$326K Buy
16,075
+5,996
+59% +$115K ﹤0.01% 2502
2024
Q2 		$232K Buy
10,079
+901
+10% +$22.8K ﹤0.01% 2658
2024
Q1 		$267K Buy
+9,178
New +$210K ﹤0.01% 2543

Other funds holding ACMR

BlackRock
BlackRock New York $6.73T AUM 46.02% 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 $55.1B AUM 45.38% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $3.38T AUM 44.17% 1-Year Est. Return
TC
Triata Capital Hong Kong $588M AUM 8.92% 1-Year Est. Return
SAM
Southeastern Asset Management Memphis, Tennessee $1.92B AUM 6.41% 1-Year Est. Return
Morgan Stanley
Morgan Stanley New York $1.89T AUM 35.08% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return
Invesco
Invesco Atlanta, Georgia $1.26T AUM 61.52% 1-Year Est. Return
Janus Henderson Group
Janus Henderson Group London $209B AUM 37.72% 1-Year Est. Return

Mariner's ACMR Position: Q4 2025 in Review

Mariner sold out of ACM Research (ACMR) in Q4 2025, closing a stake of 7,167 shares — an estimated $280K sold.

Mariner first reported a position in ACMR in Q1 2024 and held it in 6 quarters. The position peaked at $366K in Q4 2024. 278 funds tracked by Wall St. Rank hold ACMR as of Q4 2025.

  • Mariner reported no remaining ACM Research position as of Q4 2025 after selling out during the quarter.
  • Mariner sold 7,167 ACM Research shares in Q4 2025, an estimated $280K.
  • Mariner first reported a position in ACM Research in Q1 2024 and held it in 6 quarters.
  • Mariner's ACM Research position peaked at $366K in Q4 2024.
  • 278 funds tracked by Wall St. Rank held ACM Research as of Q4 2025.

Based on Mariner's 13F filing for Q4 2025, filed 13 Feb 2026.