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MANGROVE PARTNERS IM, LLC: ATMU position timeline

Available 13F reports, 13D and 13G stakes and each Form 3, 4 and 5 line of MANGROVE PARTNERS IM, LLC on ATMU, newest first. How the timeline and the estimate are built.

MANGROVE PARTNERS IM, LLC held 1,211,236 ATMU 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 1,211,236 shares
    Change vs previous 13F -103,991 shares

    4.06% of the 13F portfolio, value $61,760,924.

    13F-HR 0001172661-26-003546 filed by MANGROVE PARTNERS IM, 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 1,315,227 shares
    Change vs previous 13F 0 shares

    6.04% of the 13F portfolio, value $74,665,437.

    13F-HR 0001172661-26-002101 filed by MANGROVE PARTNERS IM, 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 1,315,227 shares
    Change vs previous 13F -15,326 shares

    5.56% of the 13F portfolio, value $68,273,434.

    13F-HR 0001172661-26-000828 filed by MANGROVE PARTNERS IM, 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 1,330,553 shares
    Change vs previous 13F +230,922 shares

    4.43% of the 13F portfolio, value $59,994,635.

    13F-HR 0001172661-25-004806 filed by MANGROVE PARTNERS IM, 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 1,099,631 shares
    Change vs previous 13F 0 shares

    4.3% of the 13F portfolio, value $40,048,561.

    13F-HR 0001172661-25-003306 filed by MANGROVE PARTNERS IM, 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 1,099,631 shares
    Change vs previous 13F 0 shares

    4.52% of the 13F portfolio, value $40,389,447.

    13F-HR 0001172661-25-002060 filed by MANGROVE PARTNERS IM, 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 1,099,631 shares
    Change vs previous 13F -82,295 shares

    5.14% of the 13F portfolio, value $43,083,543.

    13F-HR 0001172661-25-000877 filed by MANGROVE PARTNERS IM, 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 1,181,926 shares
    Change vs previous 13F not available

    4.25% of the 13F portfolio, value $44,357,683.

    13F-HR 0001172661-24-004749 filed by MANGROVE PARTNERS IM, LLC
    Filed (acceptance time not in the bulk data set), ingested

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