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TWO SIGMA INVESTMENTS, LP: ATRC position timeline

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

TWO SIGMA INVESTMENTS, LP held 525,795 ATRC 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 525,795 shares
    Change vs previous 13F -225,208 shares

    0.01% of the 13F portfolio, value $14,711,744.

    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 751,003 shares
    Share basis changed not comparable

    Membership change: TWO SIGMA ADVISERS, LP left the group. 0.02% of the 13F portfolio, value $21,426,116.

    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 658,199 shares
    Change vs previous 13F -151,676 shares

    0.02% of the 13F portfolio, value $26,038,352.

    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: 380,499 shares
    • TWO SIGMA ADVISERS, LP: 277,700 shares

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

  4. period ended2025-09-30
    13F 809,875 shares
    Change vs previous 13F -53,138 shares

    0.02% of the 13F portfolio, value $28,548,094.

    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: 452,875 shares
    • TWO SIGMA ADVISERS, LP: 357,000 shares

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

  5. period ended2025-06-30
    13F 863,013 shares
    Change vs previous 13F -463,212 shares

    0.03% of the 13F portfolio, value $28,280,936.

    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: 411,913 shares
    • TWO SIGMA ADVISERS, LP: 451,100 shares

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

  6. period ended2025-03-31
    13F 1,326,225 shares
    Change vs previous 13F +75,829 shares

    0.05% of the 13F portfolio, value $42,784,018.

    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: 667,925 shares
    • TWO SIGMA ADVISERS, LP: 658,300 shares

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

  7. period ended2024-12-31
    13F 1,250,396 shares
    Change vs previous 13F -131,488 shares

    0.04% of the 13F portfolio, value $38,212,102.

    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: 610,996 shares
    • TWO SIGMA ADVISERS, LP: 639,400 shares

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

  8. period ended2024-09-30
    13F 1,381,884 shares
    Change vs previous 13F not available

    0.04% of the 13F portfolio, value $38,748,027.

    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: 717,784 shares
    • TWO SIGMA ADVISERS, LP: 664,100 shares

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