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AMERICAN CENTURY COMPANIES INC: KOS position timeline

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

AMERICAN CENTURY COMPANIES INC held 8,036,479 KOS 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 8,036,479 shares
    Change vs previous 13F +7,938,277 shares

    0.01% of the 13F portfolio, value $16,956,971.

    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 98,202 shares
    Change vs previous 13F -11,202,509 shares

    <0.01% of the 13F portfolio, value $273,002.

    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 11,300,711 shares
    Change vs previous 13F -19,075,012 shares

    0.01% of the 13F portfolio, value $10,254,266.

    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 30,375,723 shares
    Change vs previous 13F -3,035,323 shares

    0.03% of the 13F portfolio, value $50,423,702.

    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 33,411,046 shares
    Change vs previous 13F +4,175,537 shares

    0.03% of the 13F portfolio, value $57,466,999.

    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 29,235,509 shares
    Change vs previous 13F -320,873 shares

    0.04% of the 13F portfolio, value $66,656,962.

    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 29,556,382 shares
    Change vs previous 13F +2,997,438 shares

    0.06% of the 13F portfolio, value $101,082,828.

    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 26,558,944 shares
    Change vs previous 13F not available

    0.06% of the 13F portfolio, value $107,032,547.

    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).