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AMERICAN CENTURY COMPANIES INC: ARM position timeline

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

AMERICAN CENTURY COMPANIES INC held 348,989 ARM 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 348,989 shares
    Change vs previous 13F +155,608 shares

    0.05% of the 13F portfolio, value $123,743,385.

    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 193,381 shares
    Change vs previous 13F -351,117 shares

    0.02% of the 13F portfolio, value $29,255,656.

    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 544,498 shares
    Change vs previous 13F -25,793 shares

    0.03% of the 13F portfolio, value $59,519,854.

    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 570,291 shares
    Change vs previous 13F -26,289 shares

    0.04% of the 13F portfolio, value $80,691,312.

    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 596,580 shares
    Change vs previous 13F -106,785 shares

    0.05% of the 13F portfolio, value $96,491,902.

    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 703,365 shares
    Change vs previous 13F +372,081 shares

    0.05% of the 13F portfolio, value $75,112,460.

    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 331,284 shares
    Change vs previous 13F +221,203 shares

    0.02% of the 13F portfolio, value $40,867,308.

    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 110,081 shares
    Change vs previous 13F not available

    0.01% of the 13F portfolio, value $15,742,684.

    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).