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LOOMIS SAYLES & CO L P: CIEN position timeline

Available 13F reports, 13D and 13G stakes and each Form 3, 4 and 5 line of LOOMIS SAYLES & CO L P on CIEN, newest first. How the timeline and the estimate are built.

LOOMIS SAYLES & CO L P held 38,920 CIEN shares at 2026-06-30 per its 13F-HR filed 2026-08-14.

the latest 13F is the newest step

  1. period ended2026-06-30
    13F 38,920 shares
    Change vs previous 13F -52,393 shares

    0.02% of the 13F portfolio, value $19,092,596.

    13F-HR 0000312348-26-000034 filed by LOOMIS SAYLES & CO L P
    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 91,313 shares
    Change vs previous 13F -54,669 shares

    0.05% of the 13F portfolio, value $35,450,446.

    13F-HR 0000312348-26-000026 filed by LOOMIS SAYLES & CO L P
    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 145,982 shares
    Change vs previous 13F -165,371 shares

    0.04% of the 13F portfolio, value $34,140,810.

    13F-HR 0000312348-26-000014 filed by LOOMIS SAYLES & CO L P
    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 311,353 shares
    Change vs previous 13F -46,095 shares

    0.05% of the 13F portfolio, value $45,354,792.

    13F-HR 0000312348-25-000035 filed by LOOMIS SAYLES & CO L P
    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 357,448 shares
    Change vs previous 13F -63,453 shares

    0.04% of the 13F portfolio, value $29,071,245.

    13F-HR 0000312348-25-000028 filed by LOOMIS SAYLES & CO L P
    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 420,901 shares
    Change vs previous 13F -9,609 shares

    0.04% of the 13F portfolio, value $25,435,000.

    13F-HR 0000312348-25-000021 filed by LOOMIS SAYLES & CO L P
    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 430,510 shares
    Change vs previous 13F -13,417 shares

    0.05% of the 13F portfolio, value $36,512,000.

    13F-HR 0000312348-25-000014 filed by LOOMIS SAYLES & CO L P
    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 443,927 shares
    Change vs previous 13F not available

    0.04% of the 13F portfolio, value $27,342,000.

    13F-HR 0000312348-24-000037 filed by LOOMIS SAYLES & CO L P
    Filed (acceptance time not in the bulk data set), ingested

    Acceptance time not in the bulk data set (spec §4.2).