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PRIMECAP MANAGEMENT CO/CA/: KMX position timeline

Available 13F reports, 13D and 13G stakes and each Form 3, 4 and 5 line of PRIMECAP MANAGEMENT CO/CA/ on KMX, newest first. How the timeline and the estimate are built.

PRIMECAP MANAGEMENT CO/CA/ held 4,359,016 KMX shares at 2026-06-30 per its 13F-HR filed 2026-08-14.

the latest 13F is the newest step

  1. period ended2026-06-30
    13F 4,359,016 shares
    Change vs previous 13F +870 shares

    0.14% of the 13F portfolio, value $230,548,357.

    13F-HR 0000763212-26-000028 filed by PRIMECAP MANAGEMENT CO/CA/
    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 4,358,146 shares
    Change vs previous 13F -9,090 shares

    0.14% of the 13F portfolio, value $181,211,709.

    13F-HR 0000763212-26-000016 filed by PRIMECAP MANAGEMENT CO/CA/
    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 4,367,236 shares
    Change vs previous 13F -193,135 shares

    0.13% of the 13F portfolio, value $168,749,999.

    13F-HR 0000763212-26-000012 filed by PRIMECAP MANAGEMENT CO/CA/
    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 4,560,371 shares
    Change vs previous 13F -177,540 shares

    0.16% of the 13F portfolio, value $204,623,848.

    13F-HR 0000763212-25-000005 filed by PRIMECAP MANAGEMENT CO/CA/
    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 4,737,911 shares
    Change vs previous 13F -31,395 shares

    0.25% of the 13F portfolio, value $318,434,998.

    13F-HR 0001085146-25-004804 filed by PRIMECAP MANAGEMENT CO/CA/
    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 4,769,306 shares
    Change vs previous 13F -311,150 shares

    0.31% of the 13F portfolio, value $371,624,324.

    13F-HR 0001085146-25-002901 filed by PRIMECAP MANAGEMENT CO/CA/
    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 5,080,456 shares
    Change vs previous 13F -203,378 shares

    0.32% of the 13F portfolio, value $415,378,083.

    13F-HR 0001085146-25-000946 filed by PRIMECAP MANAGEMENT CO/CA/
    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 5,283,834 shares
    Change vs previous 13F not available

    0.3% of the 13F portfolio, value $408,863,074.

    13F-HR 0001085146-24-005460 filed by PRIMECAP MANAGEMENT CO/CA/
    Filed (acceptance time not in the bulk data set), ingested

    Acceptance time not in the bulk data set (spec §4.2).