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TWO SIGMA INVESTMENTS, LP: SIGA position timeline

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

TWO SIGMA INVESTMENTS, LP held 357,715 SIGA 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 357,715 shares
    Change vs previous 13F -75,946 shares

    <0.01% of the 13F portfolio, value $1,302,083.

    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 433,661 shares
    Change vs previous 13F +423,261 shares

    <0.01% of the 13F portfolio, value $2,320,086.

    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 10,400 shares
    Change vs previous 13F +10,400 shares

    <0.01% of the 13F portfolio, value $63,544.

    13F-HR 0000899140-26-000232 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).

  4. period ended2025-09-30
    13F 0 shares
    Change vs previous 13F -145,835 shares

    13F-HR 0000899140-25-001286 filed by TWO SIGMA INVESTMENTS, LP
    Filed (acceptance time not in the bulk data set), ingested

    • TWO SIGMA INVESTMENTS, LP: 0 shares
    • TWO SIGMA ADVISERS, LP: 0 shares

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

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

  5. period ended2025-06-30
    13F 145,835 shares
    Change vs previous 13F +118,093 shares

    <0.01% of the 13F portfolio, value $950,844.

    13F-HR 0000899140-25-000964 filed by TWO SIGMA INVESTMENTS, LP
    Filed (acceptance time not in the bulk data set), ingested

    • TWO SIGMA INVESTMENTS, LP: 113,735 shares
    • TWO SIGMA ADVISERS, LP: 32,100 shares

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

  6. period ended2025-03-31
    13F 27,742 shares
    Change vs previous 13F not available

    <0.01% of the 13F portfolio, value $152,026.

    13F-HR 0000899140-25-000680 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).