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WELLINGTON MANAGEMENT GROUP LLP: ARM position timeline

Available 13F reports, 13D and 13G stakes and each Form 3, 4 and 5 line of WELLINGTON MANAGEMENT GROUP LLP on ARM, newest first. How the timeline and the estimate are built.

WELLINGTON MANAGEMENT GROUP LLP held 809,451 ARM 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 809,451 shares
    Change vs previous 13F -846,252 shares

    0.05% of the 13F portfolio, value $287,007,041.

    13F-HR 0000902219-26-000311 filed by WELLINGTON MANAGEMENT GROUP LLP
    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 1,655,703 shares
    Change vs previous 13F -493,456 shares

    0.05% of the 13F portfolio, value $250,474,750.

    13F-HR 0000902219-26-000209 filed by WELLINGTON MANAGEMENT GROUP LLP
    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 2,149,159 shares
    Change vs previous 13F +633,009 shares

    0.04% of the 13F portfolio, value $234,924,571.

    13F-HR 0000902219-26-000103 filed by WELLINGTON MANAGEMENT GROUP LLP
    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 1,516,150 shares
    Change vs previous 13F +456,479 shares

    0.04% of the 13F portfolio, value $214,520,064.

    13F-HR 0000902219-25-000462 filed by WELLINGTON MANAGEMENT GROUP LLP
    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 1,059,671 shares
    Change vs previous 13F +11,119 shares

    0.03% of the 13F portfolio, value $171,391,187.

    13F-HR 0000902219-25-000356 filed by WELLINGTON MANAGEMENT GROUP LLP
    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 1,048,552 shares
    Change vs previous 13F -27,422 shares

    0.02% of the 13F portfolio, value $111,974,869.

    13F-HR 0000902219-25-000242 filed by WELLINGTON MANAGEMENT GROUP LLP
    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/A 1,075,974 shares
    Change vs previous 13F -51,419 shares

    0.02% of the 13F portfolio, value $132,732,152.

    13F-HR 0000902219-25-000131 filed by WELLINGTON MANAGEMENT GROUP LLP
    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 1,127,393 shares
    Change vs previous 13F not available

    0.03% of the 13F portfolio, value $161,228,473.

    13F-HR 0000902219-24-000498 filed by WELLINGTON MANAGEMENT GROUP LLP
    Filed (acceptance time not in the bulk data set), ingested

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