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PRIMECAP MANAGEMENT CO/CA/: TMUS position timeline

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

PRIMECAP MANAGEMENT CO/CA/ held 437,090 TMUS 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 437,090 shares
    Change vs previous 13F -349 shares

    0.04% of the 13F portfolio, value $73,313,106.

    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 437,439 shares
    Change vs previous 13F -1,020 shares

    0.07% of the 13F portfolio, value $91,875,313.

    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 438,459 shares
    Change vs previous 13F -85,040 shares

    0.07% of the 13F portfolio, value $89,024,715.

    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 523,499 shares
    Change vs previous 13F -22,450 shares

    0.1% of the 13F portfolio, value $125,315,191.

    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 545,949 shares
    Change vs previous 13F +4,940 shares

    0.1% of the 13F portfolio, value $130,077,809.

    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 541,009 shares
    Change vs previous 13F -133,770 shares

    0.12% of the 13F portfolio, value $144,292,511.

    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 674,779 shares
    Change vs previous 13F -19,670 shares

    0.12% of the 13F portfolio, value $148,943,969.

    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 694,449 shares
    Change vs previous 13F not available

    0.11% of the 13F portfolio, value $143,306,496.

    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).