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Calamos Advisors LLC: IONS position timeline

Available 13F reports, 13D and 13G stakes and each Form 3, 4 and 5 line of Calamos Advisors LLC on IONS, newest first. How the timeline and the estimate are built.

Calamos Advisors LLC held 29,358 IONS shares at 2026-06-30 per its 13F-HR filed 2026-07-31.

the latest 13F is the newest step

  1. period ended2026-06-30
    13F 29,358 shares
    Change vs previous 13F +9,577 shares

    0.01% of the 13F portfolio, value $2,327,796.

    13F-HR 0001316507-26-000003 filed by Calamos Advisors 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 19,781 shares
    Change vs previous 13F -13,408 shares

    0.01% of the 13F portfolio, value $1,485,355.

    13F-HR 0001316507-26-000002 filed by Calamos Advisors 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 33,189 shares
    Change vs previous 13F +7,326 shares

    0.01% of the 13F portfolio, value $2,625,582.

    13F-HR 0001316507-26-000001 filed by Calamos Advisors 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 25,863 shares
    Change vs previous 13F not available

    0.01% of the 13F portfolio, value $1,691,957.

    13F-HR 0001316507-25-000003 filed by Calamos Advisors LLC
    Filed (acceptance time not in the bulk data set), ingested

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