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Tower Research Capital LLC (TRC): AMPG position timeline

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

Tower Research Capital LLC (TRC) held 28,369 AMPG 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 28,369 shares
    Change vs previous 13F +23,986 shares

    <0.01% of the 13F portfolio, value $197,448.

    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 4,383 shares
    Change vs previous 13F +3,412 shares

    <0.01% of the 13F portfolio, value $8,328.

    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 971 shares
    Change vs previous 13F -692 shares

    <0.01% of the 13F portfolio, value $2,903.

    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 1,663 shares
    Change vs previous 13F +1,663 shares

    <0.01% of the 13F portfolio, value $6,469.

    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 0 shares
    Change vs previous 13F -796 shares

    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).

    Exited: the 13F for this period no longer lists the position.

  6. period ended2025-03-31
    13F 796 shares
    Change vs previous 13F -1,861 shares

    <0.01% of the 13F portfolio, value $1,234.

    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 2,657 shares
    Change vs previous 13F -3,356 shares

    <0.01% of the 13F portfolio, value $13,657.

    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 6,013 shares
    Change vs previous 13F not available

    <0.01% of the 13F portfolio, value $4,691.

    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).