GuruTrack
ACMR

ACMR

ACM RESEARCH INC-CLASS A

Data as of 2026 Q2 (06-30) · 13F snapshot

Summary
ACM RESEARCH INC-CLASS A (ACMR) is held as common stock by 7 tracked hedge-fund managers, with a combined reported value of ~$147.24M; the largest are Ken Griffin, Renaissance Technologies, Izzy Englander. 4 tracked managers also disclosed PUT or CALL positions, reported separately below. This quarter: 2 new, 3 added, 2 trimmed. 4 public STOCK Act / OGE trade disclosures are on record. Data as of 2026 Q2, from public SEC 13F filings, delayed up to ~45 days.
Attention · MediumThis quarter · Heating up
Common-stock holders74 also report options
Congress trades4
Price$75.95vs quarter-end-40.15%
Sectors0
This quarter's moves
New2
Added3
Trimmed / sold2
Top holderKen Griffin

Common-stock positions

PUT and CALL disclosures are excluded from these holder counts and values.

PUT / CALL disclosures

Reported separately: 13F option values are not common-stock ownership and do not reveal the full strategy or economic exposure.

Ken GriffinCALL—
Value $35.38M— of portfolio278,8002026 Q2
Steven CohenCALL—
Value $28.09M— of portfolio221,4002026 Q2
Steven CohenPUT—
Value $26.28M— of portfolio207,1002026 Q2
Ken GriffinPUT—
Value $20.19M— of portfolio159,1002026 Q2
Izzy EnglanderCALL—
Value $3.84M— of portfolio30,3002026 Q2
Paul Tudor JonesCALL—
Value $494.9K— of portfolio3,9002026 Q2
Paul Tudor JonesPUT—
Value $304.5K— of portfolio2,4002026 Q2

Insider Trading

Officers · directors · Form 4
Open-market purchases and sales (P/S)15

  • David H Wang

    Director, 10% Owner

    Sell$365.0K
    4,803 @ $75.99Traded 2026-09-08Filed 2026-09-10

  • David H Wang

    Director, 10% Owner

    Sell$3.96M
    51,374 @ $77.15Traded 2026-09-08Filed 2026-09-10

  • David H Wang

    Director, 10% Owner

    Sell$962.2K
    12,323 @ $78.08Traded 2026-09-08Filed 2026-09-10

  • David H Wang

    Director, 10% Owner

    Sell$117.9K
    1,500 @ $78.57Traded 2026-09-08Filed 2026-09-10

  • David H Wang

    Director, 10% Owner

    Sell$2.47M
    33,493 @ $73.80Traded 2026-09-08Filed 2026-09-10

  • David H Wang

    Director, 10% Owner

    Sell$1.41M
    18,934 @ $74.67Traded 2026-09-08Filed 2026-09-10

  • David H Wang

    Director, 10% Owner

    Sell$881.7K
    11,666 @ $75.58Traded 2026-09-08Filed 2026-09-10

  • David H Wang

    Director, 10% Owner

    Sell$368.8K
    4,807 @ $76.73Traded 2026-09-08Filed 2026-09-10

  • David H Wang

    Director, 10% Owner

    Sell$85.3K
    1,100 @ $77.59Traded 2026-09-08Filed 2026-09-10

  • Mark Mckechnie

    Chief Financial Officer and Treasurer

    Sell$2.35M
    30,365 @ $77.45Traded 2026-08-20Filed 2026-08-21

  • Mark Mckechnie

    Chief Financial Officer and Treasurer

    Sell$873.1K
    11,209 @ $77.89Traded 2026-08-20Filed 2026-08-21

  • Mark Mckechnie

    Chief Financial Officer and Treasurer

    Sell$1.04M
    13,625 @ $76.34Traded 2026-08-20Filed 2026-08-21

  • Haiping Dun

    Director

    Sell$96.3K
    1,200 @ $80.29Traded 2026-08-18Filed 2026-08-20

  • Haiping Dun

    Director

    Sell$276.5K
    3,400 @ $81.31Traded 2026-08-18Filed 2026-08-20

  • Haiping Dun

    Director

    Sell$32.9K
    400 @ $82.17Traded 2026-08-18Filed 2026-08-20

Insider transactions are public SEC Form 4 disclosures (company officers, directors, 10% owners), for research only — not investment advice.

Public SEC 13F filings may appear up to 45 days after quarter-end; STOCK Act / OGE trade filings are generally due within 45 days but may be late. Partial data only — research, not investment advice.