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PRIMECAP MANAGEMENT CO/CA/: AME position timeline

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

PRIMECAP MANAGEMENT CO/CA/ held 823,154 AME 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 823,154 shares
    Change vs previous 13F 0 shares

    0.12% of the 13F portfolio, value $199,153,878.

    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 823,154 shares
    Change vs previous 13F 0 shares

    0.14% of the 13F portfolio, value $176,451,291.

    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 823,154 shares
    Change vs previous 13F +4,000 shares

    0.13% of the 13F portfolio, value $169,001,747.

    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 819,154 shares
    Change vs previous 13F +40,400 shares

    0.12% of the 13F portfolio, value $154,000,952.

    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 778,754 shares
    Change vs previous 13F +428,624 shares

    0.11% of the 13F portfolio, value $140,923,324.

    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 350,130 shares
    Change vs previous 13F +230 shares

    0.05% of the 13F portfolio, value $60,271,378.

    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 349,900 shares
    Change vs previous 13F -6,000 shares

    0.05% of the 13F portfolio, value $63,072,974.

    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 355,900 shares
    Change vs previous 13F not available

    0.04% of the 13F portfolio, value $61,111,589.

    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).