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Yiheng Capital Management, L.P.: ACMR position timeline

Available 13F reports, 13D and 13G stakes and each Form 3, 4 and 5 line of Yiheng Capital Management, L.P. on ACMR, newest first. How the timeline and the estimate are built.

Yiheng Capital Management, L.P. held 0 ACMR shares at 2026-03-31 per its 13F-HR filed 2026-05-15.

the latest 13F is the newest step

  1. period ended2026-03-31
    13F 0 shares
    Change vs previous 13F -174,447 shares

    13F-HR 0001420506-26-001131 filed by Yiheng Capital Management, L.P.
    Filed (acceptance time not in the bulk data set), ingested

    Acceptance time not in the bulk data set (spec §4.2).

    Exited: the 13F for this period no longer lists the position.

  2. period ended2025-12-31
    13F 174,447 shares
    Change vs previous 13F -105,754 shares

    3% of the 13F portfolio, value $6,881,934.

    13F-HR 0001420506-26-000563 filed by Yiheng Capital Management, L.P.
    Filed (acceptance time not in the bulk data set), ingested

    Acceptance time not in the bulk data set (spec §4.2).

  3. period ended2025-09-30
    13F 280,201 shares
    Change vs previous 13F 0 shares

    3.63% of the 13F portfolio, value $10,964,265.

    13F-HR 0001420506-25-003340 filed by Yiheng Capital Management, L.P.
    Filed (acceptance time not in the bulk data set), ingested

    Acceptance time not in the bulk data set (spec §4.2).

  4. period ended2025-06-30
    13F 280,201 shares
    Change vs previous 13F 0 shares

    2.63% of the 13F portfolio, value $7,257,206.

    13F-HR 0001941040-25-000486 filed by Yiheng Capital Management, L.P.
    Filed (acceptance time not in the bulk data set), ingested

    Acceptance time not in the bulk data set (spec §4.2).

  5. period ended2025-03-31
    13F/A 280,201 shares
    Change vs previous 13F -400,403 shares

    2.3% of the 13F portfolio, value $6,539,891.

    13F-HR/A 0001941040-25-000318 filed by Yiheng Capital Management, L.P.
    Filed (acceptance time not in the bulk data set), ingested

    Acceptance time not in the bulk data set (spec §4.2).

  6. period ended2024-12-31
    13F 680,604 shares
    Change vs previous 13F +14,300 shares

    2.27% of the 13F portfolio, value $10,277,120.

    13F-HR 0001941040-25-000114 filed by Yiheng Capital Management, L.P.
    Filed (acceptance time not in the bulk data set), ingested

    Acceptance time not in the bulk data set (spec §4.2).

  7. period ended2024-09-30
    13F 666,304 shares
    Change vs previous 13F not available

    2.5% of the 13F portfolio, value $13,525,971.

    13F-HR 0001420506-24-002277 filed by Yiheng Capital Management, L.P.
    Filed (acceptance time not in the bulk data set), ingested

    Acceptance time not in the bulk data set (spec §4.2).