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PRIMECAP MANAGEMENT CO/CA/: ROK position timeline

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

PRIMECAP MANAGEMENT CO/CA/ held 254,360 ROK 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 254,360 shares
    Change vs previous 13F -270 shares

    0.07% of the 13F portfolio, value $125,928,547.

    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 254,630 shares
    Change vs previous 13F -280 shares

    0.07% of the 13F portfolio, value $91,381,614.

    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 254,910 shares
    Change vs previous 13F -126,202 shares

    0.08% of the 13F portfolio, value $99,177,835.

    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 381,112 shares
    Change vs previous 13F -4,920 shares

    0.1% of the 13F portfolio, value $133,210,078.

    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 386,032 shares
    Change vs previous 13F +130,582 shares

    0.1% of the 13F portfolio, value $128,228,251.

    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 255,450 shares
    Change vs previous 13F -1,580 shares

    0.05% of the 13F portfolio, value $66,003,170.

    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 257,030 shares
    Change vs previous 13F -3,150 shares

    0.06% of the 13F portfolio, value $73,456,605.

    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 260,180 shares
    Change vs previous 13F not available

    0.05% of the 13F portfolio, value $69,847,921.

    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).