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AMERICAN CENTURY COMPANIES INC: ATEC position timeline

Available 13F reports, 13D and 13G stakes and each Form 3, 4 and 5 line of AMERICAN CENTURY COMPANIES INC on ATEC, newest first. How the timeline and the estimate are built.

AMERICAN CENTURY COMPANIES INC held 6,521,659 ATEC shares at 2026-06-30 per its 13F-HR filed 2026-08-12.

the latest 13F is the newest step

  1. period ended2026-06-30
    13F 6,521,659 shares
    Change vs previous 13F +96,882 shares

    0.02% of the 13F portfolio, value $56,412,361.

    13F-HR 0000748054-26-000005 filed by AMERICAN CENTURY COMPANIES 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 6,424,777 shares
    Change vs previous 13F -84,685 shares

    0.04% of the 13F portfolio, value $69,901,591.

    13F-HR 0000748054-26-000002 filed by AMERICAN CENTURY COMPANIES 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 6,509,462 shares
    Change vs previous 13F +172,971 shares

    0.07% of the 13F portfolio, value $136,959,122.

    13F-HR 0000748054-26-000001 filed by AMERICAN CENTURY COMPANIES 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 6,336,491 shares
    Change vs previous 13F +159,330 shares

    0.05% of the 13F portfolio, value $92,132,607.

    13F-HR 0000748054-25-000009 filed by AMERICAN CENTURY COMPANIES 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 6,177,161 shares
    Change vs previous 13F +347,130 shares

    0.04% of the 13F portfolio, value $68,566,509.

    13F-HR 0001085146-25-004910 filed by AMERICAN CENTURY COMPANIES 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 5,830,031 shares
    Change vs previous 13F +840,974 shares

    0.04% of the 13F portfolio, value $59,116,524.

    13F-HR 0001085146-25-003039 filed by AMERICAN CENTURY COMPANIES 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 4,989,057 shares
    Change vs previous 13F +1,334,780 shares

    0.03% of the 13F portfolio, value $45,799,553.

    13F-HR 0001085146-25-000985 filed by AMERICAN CENTURY COMPANIES 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 3,654,277 shares
    Change vs previous 13F not available

    0.01% of the 13F portfolio, value $20,317,787.

    13F-HR 0001085146-24-005525 filed by AMERICAN CENTURY COMPANIES INC
    Filed (acceptance time not in the bulk data set), ingested

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