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TWO SIGMA INVESTMENTS, LP: ATEC position timeline

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

TWO SIGMA INVESTMENTS, LP held 823,496 ATEC 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 823,496 shares
    Change vs previous 13F -1,219,347 shares

    0.01% of the 13F portfolio, value $7,123,240.

    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 2,042,843 shares
    Share basis changed not comparable

    Membership change: TWO SIGMA ADVISERS, LP left the group. 0.02% of the 13F portfolio, value $22,226,132.

    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 3,603,309 shares
    Change vs previous 13F +553,485 shares

    0.06% of the 13F portfolio, value $75,813,621.

    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: 1,968,209 shares
    • TWO SIGMA ADVISERS, LP: 1,635,100 shares

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

  4. period ended2025-09-30
    13F 3,049,824 shares
    Change vs previous 13F +1,163,434 shares

    0.04% of the 13F portfolio, value $44,344,441.

    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: 1,794,324 shares
    • TWO SIGMA ADVISERS, LP: 1,255,500 shares

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

  5. period ended2025-06-30
    13F 1,886,390 shares
    Change vs previous 13F +937,553 shares

    0.02% of the 13F portfolio, value $20,938,929.

    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: 1,128,690 shares
    • TWO SIGMA ADVISERS, LP: 757,700 shares

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

  6. period ended2025-03-31
    13F 948,837 shares
    Change vs previous 13F +431,651 shares

    0.01% of the 13F portfolio, value $9,621,207.

    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: 647,937 shares
    • TWO SIGMA ADVISERS, LP: 300,900 shares

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

  7. period ended2024-12-31
    13F 517,186 shares
    Change vs previous 13F +217,016 shares

    0.01% of the 13F portfolio, value $4,747,767.

    13F-HR 0000899140-25-000265 filed by TWO SIGMA INVESTMENTS, LP
    Filed (acceptance time not in the bulk data set), ingested

    • TWO SIGMA INVESTMENTS, LP: 371,286 shares
    • TWO SIGMA ADVISERS, LP: 145,900 shares

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

  8. period ended2024-09-30
    13F 300,170 shares
    Change vs previous 13F not available

    <0.01% of the 13F portfolio, value $1,668,945.

    13F-HR 0000919574-24-006611 filed by TWO SIGMA INVESTMENTS, LP
    Filed (acceptance time not in the bulk data set), ingested

    • TWO SIGMA INVESTMENTS, LP: 216,670 shares
    • TWO SIGMA ADVISERS, LP: 83,500 shares

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