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AMERICAN CENTURY COMPANIES INC: AMX position timeline

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

AMERICAN CENTURY COMPANIES INC held 3,382,229 AMX 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 3,382,229 shares
    Change vs previous 13F -62,400 shares

    0.04% of the 13F portfolio, value $87,904,132.

    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 3,444,629 shares
    Change vs previous 13F +111,748 shares

    0.05% of the 13F portfolio, value $87,769,147.

    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 3,332,881 shares
    Change vs previous 13F +887,532 shares

    0.03% of the 13F portfolio, value $68,890,650.

    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 2,445,349 shares
    Change vs previous 13F +1,082,493 shares

    0.03% of the 13F portfolio, value $51,352,329.

    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 1,362,856 shares
    Change vs previous 13F +218,296 shares

    0.01% of the 13F portfolio, value $24,449,637.

    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 1,144,560 shares
    Change vs previous 13F +74,920 shares

    0.01% of the 13F portfolio, value $16,275,643.

    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 1,069,640 shares
    Change vs previous 13F +58,934 shares

    0.01% of the 13F portfolio, value $15,306,548.

    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 1,010,706 shares
    Change vs previous 13F not available

    0.01% of the 13F portfolio, value $16,535,150.

    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).