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Alyeska Investment Group, L.P.: IONS position timeline

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

Alyeska Investment Group, L.P. held 1,417,916 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 1,417,916 shares
    Change vs previous 13F +944,766 shares

    0.29% of the 13F portfolio, value $112,426,560.

    13F-HR 0001172661-26-003737 filed by Alyeska Investment Group, L.P.
    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 473,150 shares
    Change vs previous 13F -8,561 shares

    0.1% of the 13F portfolio, value $35,528,834.

    13F-HR 0001172661-26-002284 filed by Alyeska Investment Group, L.P.
    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 481,711 shares
    Change vs previous 13F +170,453 shares

    0.11% of the 13F portfolio, value $38,108,157.

    13F-HR 0001172661-26-000737 filed by Alyeska Investment Group, L.P.
    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 311,258 shares
    Change vs previous 13F +152,250 shares

    0.06% of the 13F portfolio, value $20,362,498.

    13F-HR 0001172661-25-005150 filed by Alyeska Investment Group, L.P.
    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 159,008 shares
    Change vs previous 13F +159,008 shares

    0.02% of the 13F portfolio, value $6,282,406.

    13F-HR 0001172661-25-003461 filed by Alyeska Investment Group, L.P.
    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 0 shares
    Change vs previous 13F -150,000 shares

    13F-HR 0001172661-25-002312 filed by Alyeska Investment Group, L.P.
    Filed (acceptance time not in the bulk data set), ingested

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

    Exited: the 13F for this period no longer lists the position.

  7. period ended2024-12-31
    13F 150,000 shares
    Change vs previous 13F -18,951 shares

    0.02% of the 13F portfolio, value $5,244,000.

    13F-HR 0001172661-25-001146 filed by Alyeska Investment Group, L.P.
    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 168,951 shares
    Change vs previous 13F not available

    0.03% of the 13F portfolio, value $6,768,177.

    13F-HR 0001172661-24-005186 filed by Alyeska Investment Group, L.P.
    Filed (acceptance time not in the bulk data set), ingested

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