Yiheng Capital Management, L.P. - 30 Sep 2024 SCHEDULE 13G/A Report for ACM Research, Inc. Ordinary shares, par value $0.01 per share (ACMR)

Filing Manager
Yiheng Capital Management, L.P.
Reporting Manager
Yiheng Capital Partners, L.P.
Security
ACM Research, Inc. Ordinary shares, par value $0.01 per share
Symbol
ACMR
Shares outstanding
55,525,333 shares
Disclosed Ownership
666,304 shares
Ownership
1.2%
Form type
SCHEDULE 13G/A
Filing time
13 Nov 2024, 12:15:09 UTC
Date of event
30 Sep 2024
SEC
View on sec.gov

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Quoteable Key Fact

"Yiheng Capital Management, L.P. disclosed 1.2% ownership in ACM Research, Inc. Ordinary shares, par value $0.01 per share (ACMR) on 30 Sep 2024."

Quick Takeaways

  • Yiheng Capital Management, L.P. filed SCHEDULE 13G/A for ACM Research, Inc. Ordinary shares, par value $0.01 per share (ACMR).
  • Disclosed ownership: 1.2%.
  • Date of event: 30 Sep 2024.

What Changed

  • No earlier schedule filing is available for direct comparison.
  • Current filing was accepted on 13 Nov 2024, 12:15.

Why This Matters

  • This page explains what this Schedule 13D/13G filing tells you before manager-level rows.
  • You can verify ownership claims directly against the original SEC filing.

Official SEC Source

Backed by Schedule 13D/13G

Beneficial ownership values are sourced from the original SEC Schedule 13D/13G filing.

See Original Filing

Reporting Managers (4)

Name Ownership Shares Owned sole voting power shared voting power Signature Title CIK
Yiheng Capital Partners, L.P. 1.2% 666,304 0 666,304 /s/ Yuanshan Guo Yuanshan Guo / Managing Member
Yiheng Capital, LLC 1.2% 666,304 0 666,304 /s/ Yuanshan Guo Yuanshan Guo / Managing Member
Yiheng Capital Management, LP 1.2% 666,304 0 666,304 /s/ Yuanshan Guo Yuanshan Guo / Managing Member
Yuanshan Guo 1.2% 666,304 0 666,304 /s/ Yuanshan Guo Yuanshan Guo / Managing Member

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