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Disclosery

PRIMECAP MANAGEMENT CO/CA/: MRSH position timeline

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

PRIMECAP MANAGEMENT CO/CA/ held 2,145,025 MRSH 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 2,145,025 shares
    Change vs previous 13F +1,427,525 shares

    0.21% of the 13F portfolio, value $357,511,318.

    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 717,500 shares
    Change vs previous 13F +199,300 shares

    0.1% of the 13F portfolio, value $124,450,375.

    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 518,200 shares
    Change vs previous 13F -1,302,816 shares

    0.07% of the 13F portfolio, value $96,136,464.

    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 1,821,016 shares
    Change vs previous 13F -141,810 shares

    0.28% of the 13F portfolio, value $366,989,354.

    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 1,962,826 shares
    Change vs previous 13F -725,100 shares

    0.34% of the 13F portfolio, value $429,152,276.

    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 2,687,926 shares
    Change vs previous 13F -44,400 shares

    0.54% of the 13F portfolio, value $655,934,582.

    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 2,732,326 shares
    Change vs previous 13F -136,415 shares

    0.45% of the 13F portfolio, value $580,373,369.

    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 2,868,741 shares
    Change vs previous 13F not available

    0.47% of the 13F portfolio, value $639,987,432.

    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).