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TEACHER RETIREMENT SYSTEM OF TEXAS: ADTN position timeline

Available 13F reports, 13D and 13G stakes and each Form 3, 4 and 5 line of TEACHER RETIREMENT SYSTEM OF TEXAS on ADTN, newest first. How the timeline and the estimate are built.

TEACHER RETIREMENT SYSTEM OF TEXAS held 0 ADTN shares at 2026-03-31 per its 13F-HR filed 2026-04-30.

the latest 13F is the newest step

  1. period ended2026-03-31
    13F 0 shares
    Change vs previous 13F -57,432 shares

    13F-HR 0000796848-26-000002 filed by TEACHER RETIREMENT SYSTEM OF TEXAS
    Filed (acceptance time not in the bulk data set), ingested

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

    Exited: the 13F for this period no longer lists the position.

  2. period ended2025-12-31
    13F 57,432 shares
    Change vs previous 13F -13,682 shares

    <0.01% of the 13F portfolio, value $499,083.

    13F-HR 0000796848-26-000001 filed by TEACHER RETIREMENT SYSTEM OF TEXAS
    Filed (acceptance time not in the bulk data set), ingested

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

  3. period ended2025-09-30
    13F 71,114 shares
    Change vs previous 13F -28,597 shares

    <0.01% of the 13F portfolio, value $667,050.

    13F-HR 0000796848-25-000010 filed by TEACHER RETIREMENT SYSTEM OF TEXAS
    Filed (acceptance time not in the bulk data set), ingested

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

  4. period ended2025-06-30
    13F 99,711 shares
    Change vs previous 13F +34,305 shares

    <0.01% of the 13F portfolio, value $894,408.

    13F-HR 0000796848-25-000006 filed by TEACHER RETIREMENT SYSTEM OF TEXAS
    Filed (acceptance time not in the bulk data set), ingested

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

  5. period ended2025-03-31
    13F 65,406 shares
    Change vs previous 13F not available

    <0.01% of the 13F portfolio, value $570,339.

    13F-HR 0000796848-25-000004 filed by TEACHER RETIREMENT SYSTEM OF TEXAS
    Filed (acceptance time not in the bulk data set), ingested

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