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Tower Research Capital LLC (TRC): ARM position timeline

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

Tower Research Capital LLC (TRC) held 17,256 ARM 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 17,256 shares
    Change vs previous 13F +15,195 shares

    0.15% of the 13F portfolio, value $6,118,460.

    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 2,061 shares
    Change vs previous 13F -11,944 shares

    0.01% of the 13F portfolio, value $311,788.

    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 14,005 shares
    Change vs previous 13F +8,518 shares

    0.04% of the 13F portfolio, value $1,530,887.

    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 5,487 shares
    Change vs previous 13F +2,694 shares

    0.02% of the 13F portfolio, value $776,355.

    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 2,793 shares
    Change vs previous 13F +566 shares

    0.01% of the 13F portfolio, value $451,740.

    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 2,227 shares
    Change vs previous 13F -21,381 shares

    0.01% of the 13F portfolio, value $237,821.

    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 23,608 shares
    Change vs previous 13F +16,498 shares

    0.06% of the 13F portfolio, value $2,912,283.

    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 7,110 shares
    Change vs previous 13F not available

    0.03% of the 13F portfolio, value $1,016,802.

    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).