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PRIMECAP MANAGEMENT CO/CA/: TMO position timeline

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

PRIMECAP MANAGEMENT CO/CA/ held 1,982,271 TMO 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 1,982,271 shares
    Change vs previous 13F -260 shares

    0.59% of the 13F portfolio, value $993,831,390.

    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 1,982,531 shares
    Change vs previous 13F -74,761 shares

    0.77% of the 13F portfolio, value $974,473,464.

    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 2,057,292 shares
    Change vs previous 13F -246,030 shares

    0.9% of the 13F portfolio, value $1,192,097,851.

    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 2,303,322 shares
    Change vs previous 13F -102,870 shares

    0.86% of the 13F portfolio, value $1,117,157,235.

    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 2,406,192 shares
    Change vs previous 13F +88,890 shares

    0.77% of the 13F portfolio, value $975,614,610.

    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 2,317,302 shares
    Change vs previous 13F -187,849 shares

    0.95% of the 13F portfolio, value $1,153,089,475.

    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 2,505,151 shares
    Change vs previous 13F -69,726 shares

    1.01% of the 13F portfolio, value $1,303,254,705.

    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 2,574,877 shares
    Change vs previous 13F not available

    1.17% of the 13F portfolio, value $1,592,741,667.

    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).