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AMERICAN CENTURY COMPANIES INC: MARA position timeline

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

AMERICAN CENTURY COMPANIES INC held 342,166 MARA 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 342,166 shares
    Change vs previous 13F +85,612 shares

    <0.01% of the 13F portfolio, value $4,752,686.

    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 256,554 shares
    Change vs previous 13F +9,467 shares

    <0.01% of the 13F portfolio, value $2,093,481.

    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 247,087 shares
    Change vs previous 13F -4,372,799 shares

    <0.01% of the 13F portfolio, value $2,218,841.

    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 4,619,886 shares
    Change vs previous 13F -2,161,312 shares

    0.04% of the 13F portfolio, value $84,359,118.

    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 6,781,198 shares
    Change vs previous 13F +491,245 shares

    0.06% of the 13F portfolio, value $106,329,185.

    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 6,289,953 shares
    Change vs previous 13F +2,250,082 shares

    0.04% of the 13F portfolio, value $72,334,460.

    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 4,039,871 shares
    Change vs previous 13F +1,240,354 shares

    0.04% of the 13F portfolio, value $67,748,637.

    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 2,799,517 shares
    Change vs previous 13F not available

    0.03% of the 13F portfolio, value $45,408,166.

    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).