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Tower Research Capital LLC (TRC): ALRM position timeline

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

Tower Research Capital LLC (TRC) held 1,666 ALRM 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 1,666 shares
    Change vs previous 13F -3,295 shares

    <0.01% of the 13F portfolio, value $77,836.

    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 4,961 shares
    Change vs previous 13F +70 shares

    0.01% of the 13F portfolio, value $214,266.

    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 4,891 shares
    Change vs previous 13F +1,008 shares

    0.01% of the 13F portfolio, value $249,539.

    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 3,883 shares
    Change vs previous 13F -2,289 shares

    0.01% of the 13F portfolio, value $206,110.

    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 6,172 shares
    Change vs previous 13F +5,198 shares

    0.01% of the 13F portfolio, value $349,150.

    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 974 shares
    Change vs previous 13F -3,038 shares

    <0.01% of the 13F portfolio, value $53,687.

    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 4,012 shares
    Change vs previous 13F +974 shares

    <0.01% of the 13F portfolio, value $243,930.

    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 3,038 shares
    Change vs previous 13F not available

    <0.01% of the 13F portfolio, value $166,088.

    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).