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TWO SIGMA INVESTMENTS, LP: IRDM position timeline

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

TWO SIGMA INVESTMENTS, LP held 363,685 IRDM 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 363,685 shares
    Change vs previous 13F -38,743 shares

    0.02% of the 13F portfolio, value $19,948,122.

    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 402,428 shares
    Share basis changed not comparable

    Membership change: TWO SIGMA ADVISERS, LP left the group. 0.01% of the 13F portfolio, value $11,163,353.

    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 1,054,370 shares
    Change vs previous 13F +89,080 shares

    0.02% of the 13F portfolio, value $18,324,951.

    13F-HR 0000899140-26-000232 filed by TWO SIGMA INVESTMENTS, LP
    Filed (acceptance time not in the bulk data set), ingested

    • TWO SIGMA INVESTMENTS, LP: 700,544 shares
    • TWO SIGMA ADVISERS, LP: 353,826 shares

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

  4. period ended2025-09-30
    13F 965,290 shares
    Change vs previous 13F +753,871 shares

    0.01% of the 13F portfolio, value $16,853,963.

    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: 739,590 shares
    • TWO SIGMA ADVISERS, LP: 225,700 shares

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

  5. period ended2025-06-30
    13F 211,419 shares
    Change vs previous 13F +121,782 shares

    0.01% of the 13F portfolio, value $6,378,511.

    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: 171,619 shares
    • TWO SIGMA ADVISERS, LP: 39,800 shares

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

  6. period ended2025-03-31
    13F 89,637 shares
    Change vs previous 13F +81,537 shares

    <0.01% of the 13F portfolio, value $2,448,883.

    13F-HR 0000899140-25-000680 filed by TWO SIGMA INVESTMENTS, LP
    Filed (acceptance time not in the bulk data set), ingested

    • TWO SIGMA INVESTMENTS, LP: 61,437 shares
    • TWO SIGMA ADVISERS, LP: 28,200 shares

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

  7. period ended2024-12-31
    13F 8,100 shares
    Change vs previous 13F +500 shares

    <0.01% of the 13F portfolio, value $235,062.

    13F-HR 0000899140-25-000264 filed by TWO SIGMA ADVISERS, 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 7,600 shares
    Change vs previous 13F not available

    <0.01% of the 13F portfolio, value $231,420.

    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: 0 shares
    • TWO SIGMA ADVISERS, LP: 7,600 shares

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