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Disclosery

STATE OF WISCONSIN INVESTMENT BOARD: CIEN position timeline

Available 13F reports, 13D and 13G stakes and each Form 3, 4 and 5 line of STATE OF WISCONSIN INVESTMENT BOARD on CIEN, newest first. How the timeline and the estimate are built.

STATE OF WISCONSIN INVESTMENT BOARD held 80,941 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 80,941 shares
    Change vs previous 13F -15,385 shares

    0.08% of the 13F portfolio, value $39,706,417.

    13F-HR 0001062993-26-004375 filed by STATE OF WISCONSIN INVESTMENT BOARD
    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 96,326 shares
    Change vs previous 13F +6,292 shares

    0.09% of the 13F portfolio, value $37,396,643.

    13F-HR 0001062993-26-002676 filed by STATE OF WISCONSIN INVESTMENT BOARD
    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 90,034 shares
    Change vs previous 13F -5,367 shares

    0.05% of the 13F portfolio, value $21,056,252.

    13F-HR 0001062993-26-000957 filed by STATE OF WISCONSIN INVESTMENT BOARD
    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 95,401 shares
    Change vs previous 13F -28,950 shares

    0.03% of the 13F portfolio, value $13,897,064.

    13F-HR 0001062993-25-016783 filed by STATE OF WISCONSIN INVESTMENT BOARD
    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 124,351 shares
    Change vs previous 13F -13,436 shares

    0.02% of the 13F portfolio, value $10,113,467.

    13F-HR 0001062993-25-014368 filed by STATE OF WISCONSIN INVESTMENT BOARD
    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 137,787 shares
    Change vs previous 13F +9,471 shares

    0.02% of the 13F portfolio, value $8,326,468.

    13F-HR 0001062993-25-009484 filed by STATE OF WISCONSIN INVESTMENT BOARD
    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 128,316 shares
    Change vs previous 13F -10,120 shares

    0.03% of the 13F portfolio, value $10,882,480.

    13F-HR 0001062993-25-002462 filed by STATE OF WISCONSIN INVESTMENT BOARD
    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 138,436 shares
    Change vs previous 13F not available

    0.02% of the 13F portfolio, value $8,526,273.

    13F-HR 0001062993-24-019058 filed by STATE OF WISCONSIN INVESTMENT BOARD
    Filed (acceptance time not in the bulk data set), ingested

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