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DIMENSIONAL FUND ADVISORS LP: SIGA position timeline

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

DIMENSIONAL FUND ADVISORS LP held 2,719,568 SIGA shares at 2026-06-30 per its 13F-HR filed 2026-08-11.

the latest 13F is the newest step

  1. period ended2026-06-30
    13F 2,719,568 shares
    Change vs previous 13F +16,844 shares

    <0.01% of the 13F portfolio, value $9,899,037.

    13F-HR 0000354204-26-000866 filed by DIMENSIONAL FUND ADVISORS 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 2,702,724 shares
    Change vs previous 13F +165,930 shares

    <0.01% of the 13F portfolio, value $14,459,148.

    13F-HR 0000354204-26-000581 filed by DIMENSIONAL FUND ADVISORS 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 2,536,794 shares
    Change vs previous 13F +104,414 shares

    <0.01% of the 13F portfolio, value $15,500,185.

    13F-HR 0000354204-26-000347 filed by DIMENSIONAL FUND ADVISORS 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 2,432,380 shares
    Change vs previous 13F +24,901 shares

    <0.01% of the 13F portfolio, value $22,254,626.

    13F-HR 0000354204-25-001337 filed by DIMENSIONAL FUND ADVISORS LP
    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 2,407,479 shares
    Change vs previous 13F +54,596 shares

    <0.01% of the 13F portfolio, value $15,696,505.

    13F-HR 0000354204-25-001097 filed by DIMENSIONAL FUND ADVISORS LP
    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 2,352,883 shares
    Change vs previous 13F +226,818 shares

    <0.01% of the 13F portfolio, value $12,893,787.

    13F-HR 0000354204-25-000866 filed by DIMENSIONAL FUND ADVISORS LP
    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 2,126,065 shares
    Change vs previous 13F +217,926 shares

    <0.01% of the 13F portfolio, value $12,777,274.

    13F-HR 0000354204-25-000528 filed by DIMENSIONAL FUND ADVISORS LP
    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 1,908,139 shares
    Change vs previous 13F not available

    <0.01% of the 13F portfolio, value $12,881,350.

    13F-HR 0000354204-24-004773 filed by DIMENSIONAL FUND ADVISORS LP
    Filed (acceptance time not in the bulk data set), ingested

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