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Tower Research Capital LLC (TRC): AMPL position timeline

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

Tower Research Capital LLC (TRC) held 4,255 AMPL 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 4,255 shares
    Change vs previous 13F -2,995 shares

    <0.01% of the 13F portfolio, value $32,551.

    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 7,250 shares
    Change vs previous 13F -2,192 shares

    <0.01% of the 13F portfolio, value $49,445.

    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 9,442 shares
    Change vs previous 13F +6,733 shares

    <0.01% of the 13F portfolio, value $109,338.

    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 2,709 shares
    Change vs previous 13F -7,768 shares

    <0.01% of the 13F portfolio, value $29,041.

    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 10,477 shares
    Change vs previous 13F +4,858 shares

    <0.01% of the 13F portfolio, value $129,915.

    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 5,619 shares
    Change vs previous 13F +4,203 shares

    <0.01% of the 13F portfolio, value $57,258.

    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 1,416 shares
    Change vs previous 13F -1,413 shares

    <0.01% of the 13F portfolio, value $14,939.

    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 2,829 shares
    Change vs previous 13F not available

    <0.01% of the 13F portfolio, value $25,376.

    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).