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PRIMECAP MANAGEMENT CO/CA/: NSC position timeline

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

PRIMECAP MANAGEMENT CO/CA/ held 1,032,910 NSC 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 1,032,910 shares
    Change vs previous 13F -500 shares

    0.19% of the 13F portfolio, value $324,943,157.

    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 1,033,410 shares
    Change vs previous 13F +31,227 shares

    0.23% of the 13F portfolio, value $296,588,670.

    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 1,002,183 shares
    Change vs previous 13F -130,400 shares

    0.22% of the 13F portfolio, value $289,350,276.

    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 1,132,583 shares
    Change vs previous 13F +82,500 shares

    0.26% of the 13F portfolio, value $340,239,259.

    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 1,050,083 shares
    Change vs previous 13F +345,163 shares

    0.21% of the 13F portfolio, value $268,789,745.

    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 704,920 shares
    Change vs previous 13F +31,720 shares

    0.14% of the 13F portfolio, value $166,960,302.

    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 673,200 shares
    Change vs previous 13F +214,700 shares

    0.12% of the 13F portfolio, value $158,000,040.

    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 458,500 shares
    Change vs previous 13F not available

    0.08% of the 13F portfolio, value $113,937,250.

    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).