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PRIMECAP MANAGEMENT CO/CA/: AMGN position timeline

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

PRIMECAP MANAGEMENT CO/CA/ held 6,756,962 AMGN 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 6,756,962 shares
    Change vs previous 13F -2,117,167 shares

    1.45% of the 13F portfolio, value $2,446,831,080.

    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 8,874,129 shares
    Change vs previous 13F -30,850 shares

    2.46% of the 13F portfolio, value $3,122,362,289.

    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 8,904,979 shares
    Change vs previous 13F -802,630 shares

    2.21% of the 13F portfolio, value $2,914,688,677.

    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 9,707,609 shares
    Change vs previous 13F -924,100 shares

    2.1% of the 13F portfolio, value $2,739,487,259.

    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 10,631,709 shares
    Change vs previous 13F -1,756,586 shares

    2.35% of the 13F portfolio, value $2,968,479,471.

    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 12,388,295 shares
    Change vs previous 13F -613,830 shares

    3.19% of the 13F portfolio, value $3,859,573,309.

    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 13,002,125 shares
    Change vs previous 13F -1,253,816 shares

    2.62% of the 13F portfolio, value $3,388,873,862.

    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 14,255,941 shares
    Change vs previous 13F not available

    3.38% of the 13F portfolio, value $4,593,407,073.

    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).