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Tower Research Capital LLC (TRC): QSI position timeline

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

Tower Research Capital LLC (TRC) held 23,758 QSI 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 23,758 shares
    Change vs previous 13F -1,185 shares

    <0.01% of the 13F portfolio, value $21,026.

    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 24,943 shares
    Change vs previous 13F -7,652 shares

    <0.01% of the 13F portfolio, value $19,306.

    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 32,595 shares
    Change vs previous 13F +17,934 shares

    <0.01% of the 13F portfolio, value $35,854.

    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 14,661 shares
    Change vs previous 13F -246 shares

    <0.01% of the 13F portfolio, value $20,672.

    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 14,907 shares
    Change vs previous 13F -6,119 shares

    <0.01% of the 13F portfolio, value $29,218.

    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 21,026 shares
    Change vs previous 13F -2,321 shares

    <0.01% of the 13F portfolio, value $25,231.

    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 23,347 shares
    Change vs previous 13F +13,592 shares

    <0.01% of the 13F portfolio, value $63,037.

    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 9,755 shares
    Change vs previous 13F not available

    <0.01% of the 13F portfolio, value $8,604.

    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).