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VANGUARD GROUP INC: CIEN position timeline

Available 13F reports, 13D and 13G stakes and each Form 3, 4 and 5 line of VANGUARD GROUP INC on CIEN, newest first. How the timeline and the estimate are built.

VANGUARD GROUP INC held 18,402,982 CIEN shares at 2026-06-30 per its 13F-HR filed 2026-08-13.

the latest 13F is the newest step

  1. period ended2026-06-30
    13F 18,402,982 shares
    Change vs previous 13F +423,807 shares

    0.12% of the 13F portfolio, value $9,027,766,850.

    13F-HR 0002100119-26-001527 filed by VANGUARD CAPITAL MANAGEMENT LLC
    Filed (acceptance time not in the bulk data set), ingested

    • VANGUARD FIDUCIARY TRUST CO: 812,345 shares
    • Vanguard Investments Australia, Ltd.: 72,306 shares
    • VANGUARD ASSET MANAGEMENT, Ltd: 275,711 shares
    • Vanguard Personalized Indexing Management, LLC: 21,024 shares
    • Vanguard Global Advisers, LLC: 307,128 shares
    • VANGUARD CAPITAL MANAGEMENT LLC: 9,233,803 shares
    • VANGUARD PORTFOLIO MANAGEMENT LLC: 7,680,665 shares

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

  2. period ended2026-03-31
    13F/A 17,979,175 shares
    Change vs previous 13F +3,582,173 shares

    0.1% of the 13F portfolio, value $6,980,055,111.

    13F-HR/A 0002100119-26-001311 filed by VANGUARD CAPITAL MANAGEMENT LLC
    Filed (acceptance time not in the bulk data set), ingested

    • VANGUARD FIDUCIARY TRUST CO: 793,398 shares
    • Vanguard Investments Australia, Ltd.: 70,529 shares
    • VANGUARD ASSET MANAGEMENT, Ltd: 244,340 shares
    • Vanguard Personalized Indexing Management, LLC: 22,040 shares
    • Vanguard Global Advisers, LLC: 310,389 shares
    • VANGUARD CAPITAL MANAGEMENT LLC: 9,169,355 shares
    • VANGUARD PORTFOLIO MANAGEMENT LLC: 7,369,124 shares

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

  3. period ended2025-12-31
    13F 14,397,002 shares
    Change vs previous 13F -690,991 shares

    0.05% of the 13F portfolio, value $3,367,026,857.

    13F-HR 0000102909-26-000031 filed by VANGUARD GROUP INC
    Filed (acceptance time not in the bulk data set), ingested

    • VANGUARD GROUP INC: 14,376,579 shares
    • Vanguard Personalized Indexing Management, LLC: 20,423 shares

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

  4. period ended2025-09-30
    13F 15,087,993 shares
    Change vs previous 13F -20,121 shares

    0.03% of the 13F portfolio, value $2,197,867,941.

    13F-HR 0000102909-25-000353 filed by VANGUARD GROUP INC
    Filed (acceptance time not in the bulk data set), ingested

    • VANGUARD GROUP INC: 15,068,602 shares
    • Vanguard Personalized Indexing Management, LLC: 19,391 shares

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

  5. period ended2025-06-30
    13F 15,108,114 shares
    Change vs previous 13F +106,119 shares

    0.02% of the 13F portfolio, value $1,228,742,913.

    13F-HR 0001752724-25-185843 filed by VANGUARD GROUP INC
    Filed (acceptance time not in the bulk data set), ingested

    • VANGUARD GROUP INC: 15,088,445 shares
    • Vanguard Personalized Indexing Management, LLC: 19,669 shares

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

  6. period ended2025-03-31
    13F 15,001,995 shares
    Change vs previous 13F -329,396 shares

    0.02% of the 13F portfolio, value $906,570,556.

    13F-HR 0001752724-25-099331 filed by VANGUARD GROUP INC
    Filed (acceptance time not in the bulk data set), ingested

    • VANGUARD GROUP INC: 14,985,246 shares
    • Vanguard Personalized Indexing Management, LLC: 16,749 shares

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

  7. period ended2024-12-31
    13F 15,331,391 shares
    Change vs previous 13F +140,767 shares

    0.02% of the 13F portfolio, value $1,300,255,270.

    13F-HR 0001752724-25-022205 filed by VANGUARD GROUP INC
    Filed (acceptance time not in the bulk data set), ingested

    • VANGUARD GROUP INC: 15,316,640 shares
    • Vanguard Personalized Indexing Management, LLC: 14,751 shares

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

  8. period ended2024-09-30
    13F 15,190,624 shares
    Change vs previous 13F not available

    0.02% of the 13F portfolio, value $935,590,532.

    13F-HR 0001752724-24-248565 filed by VANGUARD GROUP INC
    Filed (acceptance time not in the bulk data set), ingested

    • VANGUARD GROUP INC: 15,176,699 shares
    • Vanguard Personalized Indexing Management, LLC: 13,925 shares

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