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Disclosery

Front Street Capital Management, Inc.: CIEN position timeline

Available 13F reports, 13D and 13G stakes and each Form 3, 4 and 5 line of Front Street Capital Management, Inc. on CIEN, newest first. How the timeline and the estimate are built.

Front Street Capital Management, Inc. held 47,975 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 47,975 shares
    Change vs previous 13F -11,630 shares

    2.67% of the 13F portfolio, value $23,534,616.

    13F-HR 0001683182-26-000004 filed by Front Street Capital Management, Inc.
    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 59,605 shares
    Change vs previous 13F -26,654 shares

    3.07% of the 13F portfolio, value $23,140,000.

    13F-HR 0001683182-26-000003 filed by Front Street Capital Management, Inc.
    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 86,259 shares
    Change vs previous 13F -11,614 shares

    2.86% of the 13F portfolio, value $20,173,000.

    13F-HR 0001683182-26-000001 filed by Front Street Capital Management, Inc.
    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 97,873 shares
    Change vs previous 13F -2,423 shares

    2.2% of the 13F portfolio, value $14,253,000.

    13F-HR 0001683182-25-000005 filed by Front Street Capital Management, Inc.
    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 100,296 shares
    Change vs previous 13F -76 shares

    1.56% of the 13F portfolio, value $8,157,000.

    13F-HR 0001683182-25-000004 filed by Front Street Capital Management, Inc.
    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 100,372 shares
    Change vs previous 13F -10,726 shares

    1.16% of the 13F portfolio, value $6,065,000.

    13F-HR 0001683182-25-000003 filed by Front Street Capital Management, Inc.
    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 111,098 shares
    Change vs previous 13F -547 shares

    1.64% of the 13F portfolio, value $9,422,000.

    13F-HR 0001683182-25-000001 filed by Front Street Capital Management, Inc.
    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 111,645 shares
    Change vs previous 13F not available

    1.11% of the 13F portfolio, value $6,876,000.

    13F-HR 0001683182-24-000005 filed by Front Street Capital Management, Inc.
    Filed (acceptance time not in the bulk data set), ingested

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