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Steamboat Capital Partners, LLC: ACMR position timeline

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

Steamboat Capital Partners, LLC held 182,773 ACMR shares at 2026-06-30 per its 13F-HR filed 2026-08-14.

the latest 13F is the newest step

  1. period ended2026-06-30
    13F 182,773 shares
    Change vs previous 13F -40,618 shares

    4.96% of the 13F portfolio, value $23,192,066.

    13F-HR 0001635663-26-000007 filed by Steamboat Capital Partners, LLC
    Filed (acceptance time not in the bulk data set), ingested

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

  2. period ended2026-03-31
    13F 223,391 shares
    Change vs previous 13F -280,770 shares

    2.18% of the 13F portfolio, value $8,790,436.

    13F-HR 0001635663-26-000005 filed by Steamboat Capital Partners, LLC
    Filed (acceptance time not in the bulk data set), ingested

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

  3. period ended2025-12-31
    13F 504,161 shares
    Change vs previous 13F -20,839 shares

    5.46% of the 13F portfolio, value $19,889,151.

    13F-HR 0001635663-26-000003 filed by Steamboat Capital Partners, LLC
    Filed (acceptance time not in the bulk data set), ingested

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

  4. period ended2025-09-30
    13F 525,000 shares
    Change vs previous 13F -54,975 shares

    5.35% of the 13F portfolio, value $20,543,250.

    13F-HR 0001635663-25-000008 filed by Steamboat Capital Partners, LLC
    Filed (acceptance time not in the bulk data set), ingested

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

  5. period ended2025-06-30
    13F 579,975 shares
    Change vs previous 13F +104,975 shares

    4.28% of the 13F portfolio, value $15,021,353.

    13F-HR 0001635663-25-000006 filed by Steamboat Capital Partners, LLC
    Filed (acceptance time not in the bulk data set), ingested

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

  6. period ended2025-03-31
    13F 475,000 shares
    Change vs previous 13F -273,925 shares

    3.35% of the 13F portfolio, value $11,086,500.

    13F-HR 0001635663-25-000003 filed by Steamboat Capital Partners, LLC
    Filed (acceptance time not in the bulk data set), ingested

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

  7. period ended2024-12-31
    13F 748,925 shares
    Change vs previous 13F -230,083 shares

    3.49% of the 13F portfolio, value $11,308,768.

    13F-HR 0001635663-25-000002 filed by Steamboat Capital Partners, LLC
    Filed (acceptance time not in the bulk data set), ingested

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

  8. period ended2024-09-30
    13F 979,008 shares
    Change vs previous 13F not available

    6.26% of the 13F portfolio, value $19,873,862.

    13F-HR 0001635663-24-000007 filed by Steamboat Capital Partners, LLC
    Filed (acceptance time not in the bulk data set), ingested

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