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GW&K Investment Management, LLC: IONS position timeline

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

GW&K Investment Management, LLC held 746,966 IONS shares at 2026-06-30 per its 13F-HR filed 2026-08-12.

the latest 13F is the newest step

  1. period ended2026-06-30
    13F 746,966 shares
    Change vs previous 13F -32,383 shares

    0.46% of the 13F portfolio, value $59,227,000.

    13F-HR 0001082917-26-000003 filed by GW&K Investment Management, 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 779,349 shares
    Change vs previous 13F -7,319 shares

    0.52% of the 13F portfolio, value $58,521,000.

    13F-HR 0001082917-26-000002 filed by GW&K Investment Management, 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 786,668 shares
    Change vs previous 13F +522,661 shares

    0.54% of the 13F portfolio, value $62,234,000.

    13F-HR 0001082917-26-000001 filed by GW&K Investment Management, 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 264,007 shares
    Change vs previous 13F -184,823 shares

    0.15% of the 13F portfolio, value $17,271,000.

    13F-HR 0001082917-25-000007 filed by GW&K Investment Management, 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 448,830 shares
    Change vs previous 13F +266,521 shares

    0.16% of the 13F portfolio, value $17,733,000.

    13F-HR 0001082917-25-000004 filed by GW&K Investment Management, 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 182,309 shares
    Change vs previous 13F -4,911 shares

    0.05% of the 13F portfolio, value $5,500,000.

    13F-HR 0001082917-25-000003 filed by GW&K Investment Management, 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 187,220 shares
    Change vs previous 13F not available

    0.06% of the 13F portfolio, value $6,545,000.

    13F-HR 0001082917-25-000001 filed by GW&K Investment Management, LLC
    Filed (acceptance time not in the bulk data set), ingested

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