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Kovack Advisors, Inc.: ADTN position timeline

Available 13F reports, 13D and 13G stakes and each Form 3, 4 and 5 line of Kovack Advisors, Inc. on ADTN, newest first. How the timeline and the estimate are built.

Kovack Advisors, Inc. held 696,210 ADTN shares at 2026-06-30 per its 13F-HR filed 2026-07-29.

the latest 13F is the newest step

  1. period ended2026-06-30
    13F 696,210 shares
    Change vs previous 13F -39,790 shares

    0.46% of the 13F portfolio, value $9,496,305.

    13F-HR 0001728321-26-000004 filed by Kovack Advisors, 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 736,000 shares
    Change vs previous 13F -17,550 shares

    0.5% of the 13F portfolio, value $9,369,280.

    13F-HR 0001728321-26-000003 filed by Kovack Advisors, 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/A 753,550 shares
    Change vs previous 13F +45,650 shares

    0.31% of the 13F portfolio, value $6,548,349.

    13F-HR/A 0001728321-26-000002 filed by Kovack Advisors, 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 707,900 shares
    Change vs previous 13F -6,300 shares

    0.63% of the 13F portfolio, value $6,640,102.

    13F-HR 0001728321-25-000005 filed by Kovack Advisors, 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 714,200 shares
    Change vs previous 13F +22,950 shares

    0.63% of the 13F portfolio, value $6,406,374.

    13F-HR 0001085146-25-004483 filed by Kovack Advisors, 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 691,250 shares
    Change vs previous 13F -108,700 shares

    0.64% of the 13F portfolio, value $6,027,700.

    13F-HR 0001085146-25-002653 filed by Kovack Advisors, 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 799,950 shares
    Change vs previous 13F +21,100 shares

    0.65% of the 13F portfolio, value $6,663,584.

    13F-HR 0001085146-25-000776 filed by Kovack Advisors, 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 778,850 shares
    Change vs previous 13F not available

    0.49% of the 13F portfolio, value $4,618,581.

    13F-HR 0001085146-24-005367 filed by Kovack Advisors, Inc.
    Filed (acceptance time not in the bulk data set), ingested

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