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MILLENNIUM MANAGEMENT LLC: IONS position timeline

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

MILLENNIUM MANAGEMENT LLC held 288,872 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 288,872 shares
    Change vs previous 13F -762,634 shares

    0.02% of the 13F portfolio, value $22,904,661.

    13F-HR 0001273087-26-000007 filed by MILLENNIUM 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 1,051,506 shares
    Change vs previous 13F +958,244 shares

    0.06% of the 13F portfolio, value $78,957,586.

    13F-HR 0001273087-26-000004 filed by MILLENNIUM 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 93,262 shares
    Change vs previous 13F -686,308 shares

    0.01% of the 13F portfolio, value $7,377,957.

    13F-HR 0001273087-26-000002 filed by MILLENNIUM 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 779,570 shares
    Change vs previous 13F -1,869,957 shares

    0.04% of the 13F portfolio, value $50,999,469.

    13F-HR 0001273087-25-000034 filed by MILLENNIUM 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 2,649,527 shares
    Change vs previous 13F +2,014,157 shares

    0.09% of the 13F portfolio, value $104,682,812.

    13F-HR 0001273087-25-000028 filed by MILLENNIUM 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 635,370 shares
    Change vs previous 13F -138,845 shares

    0.02% of the 13F portfolio, value $19,169,113.

    13F-HR 0001273087-25-000019 filed by MILLENNIUM 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 774,215 shares
    Change vs previous 13F +343,492 shares

    0.02% of the 13F portfolio, value $27,066,556.

    13F-HR 0001273087-25-000015 filed by MILLENNIUM MANAGEMENT LLC
    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 430,723 shares
    Change vs previous 13F not available

    0.01% of the 13F portfolio, value $17,254,763.

    13F-HR 0001273087-24-000118 filed by MILLENNIUM MANAGEMENT LLC
    Filed (acceptance time not in the bulk data set), ingested

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