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Disclosery

Bellevue Group AG: IONS position timeline

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

Bellevue Group AG held 972,258 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 972,258 shares
    Change vs previous 13F -846,407 shares

    1.62% of the 13F portfolio, value $77,090,336.

    13F-HR 0001104659-26-096739 filed by Bellevue Group AG
    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 1,818,665 shares
    Change vs previous 13F -2,983,534 shares

    3.25% of the 13F portfolio, value $136,563,555.

    13F-HR 0001104659-26-061375 filed by Bellevue Group AG
    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 4,802,199 shares
    Change vs previous 13F -1,442,252 shares

    7.2% of the 13F portfolio, value $379,901,963.

    13F-HR 0001104659-26-016360 filed by Bellevue Group AG
    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 6,244,451 shares
    Change vs previous 13F -1,608,747 shares

    8.49% of the 13F portfolio, value $408,511,984.

    13F-HR 0001104659-25-112697 filed by Bellevue Group AG
    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 7,853,198 shares
    Change vs previous 13F 0 shares

    6.84% of the 13F portfolio, value $310,279,853.

    13F-HR 0001104659-25-078490 filed by Bellevue Group AG
    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 7,853,198 shares
    Change vs previous 13F -15,502 shares

    5.31% of the 13F portfolio, value $236,930,984.

    13F-HR 0001104659-25-048519 filed by Bellevue Group AG
    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 7,868,700 shares
    Change vs previous 13F -5,700 shares

    5.3% of the 13F portfolio, value $275,089,752.

    13F-HR 0001104659-25-014056 filed by Bellevue Group AG
    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 7,874,400 shares
    Change vs previous 13F not available

    5.11% of the 13F portfolio, value $315,448,464.

    13F-HR 0000950123-24-011906 filed by Bellevue Group AG
    Filed (acceptance time not in the bulk data set), ingested

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