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IRIDIAN ASSET MANAGEMENT LLC/CT: AXSM position timeline

Available 13F reports, 13D and 13G stakes and each Form 3, 4 and 5 line of IRIDIAN ASSET MANAGEMENT LLC/CT on AXSM, newest first. How the timeline and the estimate are built.

IRIDIAN ASSET MANAGEMENT LLC/CT held 47,924 AXSM shares at 2026-06-30 per its 13F-HR filed 2026-07-29.

the latest 13F is the newest step

  1. period ended2026-06-30
    13F 47,924 shares
    Change vs previous 13F -19,567 shares

    4.03% of the 13F portfolio, value $11,730,357.

    13F-HR 0001033427-26-000010 filed by IRIDIAN ASSET MANAGEMENT LLC/CT
    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 67,491 shares
    Change vs previous 13F -6,292 shares

    4.62% of the 13F portfolio, value $11,407,329.

    13F-HR 0001033427-26-000004 filed by IRIDIAN ASSET MANAGEMENT LLC/CT
    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 73,783 shares
    Change vs previous 13F -9,770 shares

    4.96% of the 13F portfolio, value $13,475,727.

    13F-HR 0001033427-26-000003 filed by IRIDIAN ASSET MANAGEMENT LLC/CT
    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 83,553 shares
    Change vs previous 13F -8,208 shares

    3.99% of the 13F portfolio, value $10,147,512.

    13F-HR 0001033427-25-000014 filed by IRIDIAN ASSET MANAGEMENT LLC/CT
    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 91,761 shares
    Change vs previous 13F -14,551 shares

    3.32% of the 13F portfolio, value $9,578,931.

    13F-HR 0001033427-25-000012 filed by IRIDIAN ASSET MANAGEMENT LLC/CT
    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 106,312 shares
    Change vs previous 13F -18,767 shares

    3.89% of the 13F portfolio, value $12,399,169.

    13F-HR 0001033427-25-000003 filed by IRIDIAN ASSET MANAGEMENT LLC/CT
    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 125,079 shares
    Change vs previous 13F -1,724 shares

    2.82% of the 13F portfolio, value $10,582,934.

    13F-HR 0001033427-25-000002 filed by IRIDIAN ASSET MANAGEMENT LLC/CT
    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 126,803 shares
    Change vs previous 13F not available

    2.44% of the 13F portfolio, value $11,395,786.

    13F-HR 0001033427-24-000009 filed by IRIDIAN ASSET MANAGEMENT LLC/CT
    Filed (acceptance time not in the bulk data set), ingested

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