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TWO SIGMA INVESTMENTS, LP: IONS position timeline

Available 13F reports, 13D and 13G stakes and each Form 3, 4 and 5 line of TWO SIGMA INVESTMENTS, LP on IONS, newest first. How the timeline and the estimate are built.

TWO SIGMA INVESTMENTS, LP held 6,252,342 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 6,252,342 shares
    Change vs previous 13F +394,713 shares

    0.37% of the 13F portfolio, value $495,748,197.

    13F-HR 0000899140-26-000855 filed by TWO SIGMA INVESTMENTS, LP
    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 5,857,629 shares
    Share basis changed not comparable

    Membership change: TWO SIGMA ADVISERS, LP left the group. 0.37% of the 13F portfolio, value $439,849,362.

    13F-HR 0000899140-26-000547 filed by TWO SIGMA INVESTMENTS, LP
    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 5,710,757 shares
    Change vs previous 13F +2,061,703 shares

    0.38% of the 13F portfolio, value $451,777,986.

    13F-HR 0000899140-26-000225 filed by TWO SIGMA ADVISERS, LP
    Filed (acceptance time not in the bulk data set), ingested

    • TWO SIGMA INVESTMENTS, LP: 2,658,646 shares
    • TWO SIGMA ADVISERS, LP: 3,052,111 shares

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

  4. period ended2025-09-30
    13F 3,649,054 shares
    Change vs previous 13F -806,924 shares

    0.21% of the 13F portfolio, value $238,721,113.

    13F-HR 0000899140-25-001279 filed by TWO SIGMA ADVISERS, LP
    Filed (acceptance time not in the bulk data set), ingested

    • TWO SIGMA INVESTMENTS, LP: 1,575,943 shares
    • TWO SIGMA ADVISERS, LP: 2,073,111 shares

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

  5. period ended2025-06-30
    13F 4,455,978 shares
    Change vs previous 13F +678,114 shares

    0.17% of the 13F portfolio, value $176,055,691.

    13F-HR 0000899140-25-000953 filed by TWO SIGMA ADVISERS, LP
    Filed (acceptance time not in the bulk data set), ingested

    • TWO SIGMA INVESTMENTS, LP: 1,788,367 shares
    • TWO SIGMA ADVISERS, LP: 2,667,611 shares

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

  6. period ended2025-03-31
    13F 3,777,864 shares
    Change vs previous 13F +1,507,214 shares

    0.13% of the 13F portfolio, value $113,978,157.

    13F-HR 0000899140-25-000679 filed by TWO SIGMA ADVISERS, LP
    Filed (acceptance time not in the bulk data set), ingested

    • TWO SIGMA INVESTMENTS, LP: 1,685,853 shares
    • TWO SIGMA ADVISERS, LP: 2,092,011 shares

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

  7. period ended2024-12-31
    13F 2,270,650 shares
    Change vs previous 13F +19,162 shares

    0.09% of the 13F portfolio, value $79,381,924.

    13F-HR 0000899140-25-000264 filed by TWO SIGMA ADVISERS, LP
    Filed (acceptance time not in the bulk data set), ingested

    • TWO SIGMA INVESTMENTS, LP: 921,439 shares
    • TWO SIGMA ADVISERS, LP: 1,349,211 shares

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

  8. period ended2024-09-30
    13F 2,251,488 shares
    Change vs previous 13F not available

    0.1% of the 13F portfolio, value $90,194,610.

    13F-HR 0000919574-24-006607 filed by TWO SIGMA ADVISERS, LP
    Filed (acceptance time not in the bulk data set), ingested

    • TWO SIGMA INVESTMENTS, LP: 919,077 shares
    • TWO SIGMA ADVISERS, LP: 1,332,411 shares

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