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Tower Research Capital LLC (TRC): ALK position timeline

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

Tower Research Capital LLC (TRC) held 9,094 ALK 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 9,094 shares
    Change vs previous 13F +5,432 shares

    0.01% of the 13F portfolio, value $474,707.

    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 3,662 shares
    Change vs previous 13F -2,667 shares

    <0.01% of the 13F portfolio, value $134,689.

    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 6,329 shares
    Change vs previous 13F +3,303 shares

    0.01% of the 13F portfolio, value $318,349.

    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 3,026 shares
    Change vs previous 13F +756 shares

    <0.01% of the 13F portfolio, value $150,635.

    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 2,270 shares
    Change vs previous 13F -4,909 shares

    <0.01% of the 13F portfolio, value $112,320.

    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 7,179 shares
    Change vs previous 13F +1,490 shares

    0.01% of the 13F portfolio, value $353,350.

    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 5,689 shares
    Change vs previous 13F -4,551 shares

    0.01% of the 13F portfolio, value $368,363.

    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 10,240 shares
    Change vs previous 13F not available

    0.01% of the 13F portfolio, value $462,951.

    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).