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Tower Research Capital LLC (TRC): MASS position timeline

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

Tower Research Capital LLC (TRC) held 1,134 MASS 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 1,134 shares
    Change vs previous 13F -3,006 shares

    <0.01% of the 13F portfolio, value $9,866.

    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 4,140 shares
    Change vs previous 13F +2,225 shares

    <0.01% of the 13F portfolio, value $25,337.

    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 1,915 shares
    Change vs previous 13F +768 shares

    <0.01% of the 13F portfolio, value $10,054.

    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 1,147 shares
    Change vs previous 13F -3,401 shares

    <0.01% of the 13F portfolio, value $10,048.

    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 4,548 shares
    Change vs previous 13F -3,975 shares

    <0.01% of the 13F portfolio, value $32,427.

    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 8,523 shares
    Change vs previous 13F -4,628 shares

    <0.01% of the 13F portfolio, value $38,183.

    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 13,151 shares
    Change vs previous 13F +373 shares

    <0.01% of the 13F portfolio, value $28,932.

    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 12,778 shares
    Change vs previous 13F not available

    <0.01% of the 13F portfolio, value $44,340.

    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).