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Tower Research Capital LLC (TRC): ATRO position timeline

Available 13F reports, 13D and 13G stakes and each Form 3, 4 and 5 line of Tower Research Capital LLC (TRC) on ATRO, newest first. How the timeline and the estimate are built.

Tower Research Capital LLC (TRC) held 1,323 ATRO 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 1,323 shares
    Change vs previous 13F -43 shares

    <0.01% of the 13F portfolio, value $107,507.

    13F-HR 0001533421-26-000008 filed by Tower Research Capital LLC (TRC)
    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 1,366 shares
    Change vs previous 13F +1,013 shares

    <0.01% of the 13F portfolio, value $91,153.

    13F-HR 0001533421-26-000006 filed by Tower Research Capital LLC (TRC)
    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 353 shares
    Change vs previous 13F -614 shares

    <0.01% of the 13F portfolio, value $19,147.

    13F-HR 0001533421-26-000004 filed by Tower Research Capital LLC (TRC)
    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 967 shares
    Change vs previous 13F -4,208 shares

    <0.01% of the 13F portfolio, value $44,105.

    13F-HR 0001533421-25-000019 filed by Tower Research Capital LLC (TRC)
    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 5,175 shares
    Change vs previous 13F +4,065 shares

    <0.01% of the 13F portfolio, value $173,259.

    13F-HR 0001533421-25-000013 filed by Tower Research Capital LLC (TRC)
    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 1,110 shares
    Change vs previous 13F -23,373 shares

    <0.01% of the 13F portfolio, value $26,828.

    13F-HR 0001533421-25-000007 filed by Tower Research Capital LLC (TRC)
    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 24,483 shares
    Change vs previous 13F +22,229 shares

    0.01% of the 13F portfolio, value $390,748.

    13F-HR 0001533421-25-000001 filed by Tower Research Capital LLC (TRC)
    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 2,254 shares
    Change vs previous 13F not available

    <0.01% of the 13F portfolio, value $43,908.

    13F-HR 0001533421-24-000021 filed by Tower Research Capital LLC (TRC)
    Filed (acceptance time not in the bulk data set), ingested

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