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Polar Capital Holdings Plc: IONS position timeline

Available 13F reports, 13D and 13G stakes and each Form 3, 4 and 5 line of Polar Capital Holdings Plc on IONS, newest first. How the timeline and the estimate are built.

Polar Capital Holdings Plc held 1,454,021 IONS 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 1,454,021 shares
    Change vs previous 13F +624,510 shares

    0.33% of the 13F portfolio, value $115,289,325.

    13F-HR 0001172661-26-003663 filed by Polar Capital Holdings Plc
    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 829,511 shares
    Change vs previous 13F -503,913 shares

    0.27% of the 13F portfolio, value $62,287,981.

    13F-HR 0001172661-26-002147 filed by Polar Capital Holdings Plc
    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 1,333,424 shares
    Change vs previous 13F +299,802 shares

    0.48% of the 13F portfolio, value $105,487,173.

    13F-HR 0001172661-26-000823 filed by Polar Capital Holdings Plc
    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 1,033,622 shares
    Change vs previous 13F +33,622 shares

    0.33% of the 13F portfolio, value $67,619,551.

    13F-HR 0001172661-25-004921 filed by Polar Capital Holdings Plc
    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 1,000,000 shares
    Change vs previous 13F not available

    0.21% of the 13F portfolio, value $39,510,000.

    13F-HR 0001172661-25-003304 filed by Polar Capital Holdings Plc
    Filed (acceptance time not in the bulk data set), ingested

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