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Tower Research Capital LLC (TRC): CIEN position timeline

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

Tower Research Capital LLC (TRC) held 2,288 CIEN 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 2,288 shares
    Change vs previous 13F +459 shares

    0.03% of the 13F portfolio, value $1,122,401.

    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 1,829 shares
    Change vs previous 13F -2,284 shares

    0.02% of the 13F portfolio, value $710,073.

    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 4,113 shares
    Change vs previous 13F +138 shares

    0.02% of the 13F portfolio, value $961,908.

    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 3,975 shares
    Change vs previous 13F -74 shares

    0.02% of the 13F portfolio, value $579,038.

    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 4,049 shares
    Change vs previous 13F -6,956 shares

    0.01% of the 13F portfolio, value $329,305.

    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 11,005 shares
    Change vs previous 13F +1,049 shares

    0.02% of the 13F portfolio, value $665,032.

    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 9,956 shares
    Change vs previous 13F +6,783 shares

    0.02% of the 13F portfolio, value $844,368.

    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 3,173 shares
    Change vs previous 13F not available

    0.01% of the 13F portfolio, value $195,425.

    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).