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PRIMECAP MANAGEMENT CO/CA/: FLEX position timeline

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

PRIMECAP MANAGEMENT CO/CA/ held 23,358,875 FLEX 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 23,358,875 shares
    Change vs previous 13F -2,024,573 shares

    2.24% of the 13F portfolio, value $3,785,772,872.

    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 25,383,448 shares
    Change vs previous 13F -1,318,643 shares

    1.31% of the 13F portfolio, value $1,661,600,508.

    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 26,702,091 shares
    Change vs previous 13F -2,908,187 shares

    1.22% of the 13F portfolio, value $1,613,340,338.

    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 29,610,278 shares
    Change vs previous 13F -3,993,338 shares

    1.31% of the 13F portfolio, value $1,716,507,814.

    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 33,603,616 shares
    Change vs previous 13F -2,521,231 shares

    1.33% of the 13F portfolio, value $1,677,492,511.

    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 36,124,847 shares
    Change vs previous 13F -3,065,994 shares

    0.99% of the 13F portfolio, value $1,195,009,939.

    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 39,190,841 shares
    Change vs previous 13F -4,000,193 shares

    1.17% of the 13F portfolio, value $1,504,536,389.

    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 43,191,034 shares
    Change vs previous 13F not available

    1.06% of the 13F portfolio, value $1,443,876,271.

    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).