Ticker · CUSIP 00108J109

ACMR

ACM RESH INC
Technology·Semiconductor Equipment & Materials
···Share
Holders (tracked)
16
Combined shares
3,253,540
Combined value
$128.35M
Last close
$50.61
Quarter
2025Q4
Price · 1Y$50.61+31.25 (+161.42%)H $70.68 · L $18.40 · Avg Vol 1.4M
$20.00$40.00$60.00VolJul 25Oct 25Jan 26Apr 26
Tracked holders · last 8 quarters
+2 vs previous quarter over the last 8.
16112024Q12025Q4
Price is +28.3% vs the avg quarter-end implied price across tracked holders.

SEC event timeline

26 events
  1. Ken Griffin (Citadel Advisors) trimmed2026-02-17
    −251,947 shares · 2025Q4
    Position
  2. D.E. Shaw & Co. trimmed2026-02-17
    −82,745 shares · 2025Q4
    Position
  3. Two Sigma Investments exited2026-02-17
    −194,338 shares · 2025Q4
    Position
  4. Izzy Englander (Millennium Mgmt) trimmed2026-02-17
    −186,838 shares · 2025Q4
    Position
  5. T. Rowe Price added2026-02-17
    +1,981 shares · 2025Q4
    Position
  6. Paul Tudor Jones (Tudor Investment) opened position2026-02-17
    +54,400 shares · 2025Q4
    Position
  7. Steve Cohen (Point72) added2026-02-17
    +147,500 shares · 2025Q4
    Position
  8. Jeremy Grantham (GMO) added2026-02-17
    +1,686 shares · 2025Q4
    Position
  9. AQR Capital Management trimmed2026-02-17
    −13,138 shares · 2025Q4
    Position
  10. Southeastern Asset (Longleaf) added2026-02-13
    +194,494 shares · 2025Q4
    Position
  11. Dodge & Cox trimmed2026-02-13
    −10,500 shares · 2025Q4
    Position
  12. Renaissance Technologies trimmed2026-02-12
    −175,486 shares · 2025Q4
    Position
  13. Norges Bank (Norway SWF) opened position2026-02-10
    +28,528 shares · 2025Q4
    Position
  14. Paul Tudor Jones (Tudor Investment) exited2025-12-09
    −240,742 shares · 2025Q3
    Position
  15. D.E. Shaw & Co. opened position2025-11-14
    +113,584 shares · 2025Q3
    Position
  16. Izzy Englander (Millennium Mgmt) trimmed2025-11-14
    −308,011 shares · 2025Q3
    Position
  17. T. Rowe Price added2025-11-14
    +3,277 shares · 2025Q3
    Position
  18. Southeastern Asset (Longleaf) added2025-11-14
    +299,943 shares · 2025Q3
    Position
  19. AQR Capital Management trimmed2025-11-14
    −56,630 shares · 2025Q3
    Position
  20. Steve Cohen (Point72) exited2025-11-14
    −252,270 shares · 2025Q3
    Position
  21. Two Sigma Investments opened position2025-11-14
    +194,338 shares · 2025Q3
    Position
  22. Norges Bank (Norway SWF) exited2025-11-13
    −28,528 shares · 2025Q3
    Position
  23. Renaissance Technologies added2025-11-13
    +262,925 shares · 2025Q3
    Position
  24. Dodge & Cox added2025-11-13
    +41,800 shares · 2025Q3
    Position
  25. Jeremy Grantham (GMO) opened position2025-11-13
    +18,601 shares · 2025Q3
    Position
  26. Norges Bank (Norway SWF) trimmed2025-11-12
    −113,300 shares · 2024Q3
    Position

Insider activity

No insider transactions in the last 30 days.
View full insider history for ACMR →
Follow-the-investor returns
If you'd copied each holder of ACMR…
Cost basis inferred from each manager's quarter-over-quarter position changes. Sorted by % return on the position they're still holding.
InvestorFirst inCost basisReturnPosition value today
AQR Capital Management2022Q4$19.99+153.2%$17.4M
D.E. Shaw & Co.2019Q3$22.82+121.7%$1.6M
T. Rowe Price2020Q3$24.02+110.7%$2.4M
Paul Tudor Jones (Tudor Investment)2021Q1$25.83+95.9%$455K
Paul Tudor Jones (Tudor Investment)2021Q1$25.83+95.9%$455K
Dodge & Cox2024Q3$27.31+85.3%$5.7M
Southeastern Asset (Longleaf)2025Q2$29.83+69.7%$85.0M
Ken Griffin (Citadel Advisors)2019Q3$34.53+46.6%$9.6M
Ken Griffin (Citadel Advisors)2019Q3$34.53+46.6%$9.6M
Ken Griffin (Citadel Advisors)2019Q3$34.53+46.6%$9.6M
Izzy Englander (Millennium Mgmt)2017Q4$38.60+31.1%$1.2M
Renaissance Technologies2019Q2$38.61+31.1%$6.3M
Steve Cohen (Point72)2020Q1$39.09+29.5%$3.9M
Steve Cohen (Point72)2020Q1$39.09+29.5%$3.9M
Jeremy Grantham (GMO)2025Q3$39.16+29.3%$1.0M
Norges Bank (Norway SWF)2021Q3$7995.42-99.4%$1.4M

Who moved on this name in 2025Q4

Position changes reported for the latest quarter, grouped by direction.
New positions2
Added to4
Trimmed6
Exited1

Institutional ownership over time

Distinct super-investors holding this ticker · combined dollar value, by quarter.
QuarterHoldersCombined value
2022Q1
11
$10.73B
2022Q2
7
$85.7M
2022Q3
10
$66.8M
2022Q4
11
$50.9M
2023Q1
11
$75.8M
2023Q2
10
$72.4M
2023Q3
10
$87.0M
2023Q4
10
$91.9M
2024Q1
11
$171.7M
2024Q2
11
$161.5M
2024Q3
9
$44.0M
2024Q4
8
$22.6M
2025Q1
13
$64.0M
2025Q2
17
$93.6M
2025Q3
14
$150.0M
2025Q4
16
$128.4M

Who owns ACMR

16 super-investors · 2025Q4
Tracked stake
3.25M
shares
Combined value
$128M
% of shares outstanding
—
shares-out unknown
Quarter action mix
New3Added5Trim8
#ManagerSharesValue
1Southeastern Asset
Longleaf
1.68M$66M
2AQR Capital Management343.6K$14M
3Ken Griffin
Citadel Advisors
299.8K$12M
4Ken Griffin
Citadel Advisors
188.7K$7M
5Ken Griffin
Citadel Advisors
143.0K$6M
6Renaissance Technologies124.4K$5M
7Dodge & Cox112.4K$4M
8Steve Cohen
Point72
79.1K$3M
9Steve Cohen
Point72
77.4K$3M
10T. Rowe Price47.3K$2M
11Paul Tudor Jones
Tudor Investment
45.4K$2M
12D.E. Shaw & Co.30.8K$1M
13Norges Bank
Norway SWF
28.5K$1M
14Izzy Englander
Millennium Mgmt
23.5K$927K
15Jeremy Grantham
GMO
20.3K$800K
16Paul Tudor Jones
Tudor Investment
9.0K$355K

Recent moves

20 transactions
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