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AMERICAN CENTURY COMPANIES INC: MGY position timeline

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

AMERICAN CENTURY COMPANIES INC held 11,011,458 MGY 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 11,011,458 shares
    Change vs previous 13F +502,218 shares

    0.12% of the 13F portfolio, value $281,673,112.

    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 10,509,240 shares
    Change vs previous 13F -520,607 shares

    0.17% of the 13F portfolio, value $331,776,745.

    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 11,029,847 shares
    Change vs previous 13F -857,808 shares

    0.12% of the 13F portfolio, value $241,443,413.

    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 11,887,655 shares
    Change vs previous 13F +26,424 shares

    0.14% of the 13F portfolio, value $283,758,372.

    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 11,861,231 shares
    Change vs previous 13F +1,358,878 shares

    0.14% of the 13F portfolio, value $266,640,569.

    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 10,502,353 shares
    Change vs previous 13F +562,223 shares

    0.16% of the 13F portfolio, value $265,289,496.

    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 9,940,130 shares
    Change vs previous 13F -602,532 shares

    0.13% of the 13F portfolio, value $232,400,255.

    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 10,542,662 shares
    Change vs previous 13F not available

    0.15% of the 13F portfolio, value $257,451,813.

    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).