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Disclosery

Capital World Investors: ARM position timeline

Available 13F reports, 13D and 13G stakes and each Form 3, 4 and 5 line of Capital World Investors on ARM, newest first. How the timeline and the estimate are built.

Capital World Investors held 4,330,875 ARM shares at 2026-06-30 per its 13F-HR filed 2026-08-12.

the latest 13F is the newest step

  1. period ended2026-06-30
    13F 4,330,875 shares
    Change vs previous 13F +4,330,875 shares

    0.18% of the 13F portfolio, value $1,535,420,948.

    13F-HR 0001422849-26-000113 filed by Capital World Investors
    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 0 shares
    Change vs previous 13F -1,165,776 shares

    13F-HR 0001422849-26-000046 filed by Capital World Investors
    Filed (acceptance time not in the bulk data set), ingested

    Acceptance time not in the bulk data set (spec §4.2).

    Exited: the 13F for this period no longer lists the position.

  3. period ended2025-12-31
    13F 1,165,776 shares
    Change vs previous 13F -3,606,816 shares

    0.02% of the 13F portfolio, value $127,430,975.

    13F-HR 0001422849-26-000010 filed by Capital World Investors
    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 4,772,592 shares
    Change vs previous 13F -175,845 shares

    0.09% of the 13F portfolio, value $675,274,042.

    13F-HR 0001422849-25-000069 filed by Capital World Investors
    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 4,948,437 shares
    Change vs previous 13F +15,549 shares

    0.12% of the 13F portfolio, value $800,360,200.

    13F-HR 0001422848-25-000151 filed by Capital World Investors
    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 4,932,888 shares
    Change vs previous 13F not available

    0.09% of the 13F portfolio, value $526,783,110.

    13F-HR 0000732812-25-000016 filed by Capital World Investors
    Filed (acceptance time not in the bulk data set), ingested

    Acceptance time not in the bulk data set (spec §4.2).