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UBS Group AG: WDC position timeline

Available 13F reports, 13D and 13G stakes and each Form 3, 4 and 5 line of UBS Group AG on WDC, newest first. How the timeline and the estimate are built.

UBS Group AG held 6,002,862 WDC shares at 2026-06-30 per its 13F-HR filed 2026-08-13.

the latest 13F is the newest step

  1. period ended2026-06-30
    13F 6,002,862 shares
    Change vs previous 13F -1,082,340 shares

    0.33% of the 13F portfolio, value $3,834,148,015.

    13F-HR 0000861177-26-000004 filed by UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC
    Filed (acceptance time not in the bulk data set), ingested

    • UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC: 4,744,377 shares
    • UBS Group AG: 1,258,485 shares

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

  2. period ended2026-03-31
    13F 7,085,202 shares
    Change vs previous 13F -275,028 shares

    0.18% of the 13F portfolio, value $1,916,476,290.

    13F-HR 0001610520-26-000057 filed by UBS Group AG
    Filed (acceptance time not in the bulk data set), ingested

    • UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC: 2,902,748 shares
    • UBS Group AG: 4,182,454 shares

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

  3. period ended2025-12-31
    13F 7,360,230 shares
    Change vs previous 13F -2,620,008 shares

    0.13% of the 13F portfolio, value $1,267,946,821.

    13F-HR 0001610520-26-000004 filed by UBS Group AG
    Filed (acceptance time not in the bulk data set), ingested

    • UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC: 2,809,409 shares
    • UBS Group AG: 4,550,821 shares

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

  4. period ended2025-09-30
    13F 9,980,238 shares
    Change vs previous 13F -4,650,260 shares

    0.12% of the 13F portfolio, value $1,198,227,374.

    13F-HR 0001193125-25-279802 filed by UBS Group AG
    Filed (acceptance time not in the bulk data set), ingested

    • UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC: 2,650,242 shares
    • UBS Group AG: 7,329,996 shares

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

  5. period ended2025-06-30
    13F 14,630,498 shares
    Change vs previous 13F -5,791,705 shares

    0.1% of the 13F portfolio, value $936,205,567.

    13F-HR 0000950123-25-008111 filed by UBS Group AG
    Filed (acceptance time not in the bulk data set), ingested

    • UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC: 3,203,282 shares
    • UBS Group AG: 11,427,216 shares

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

  6. period ended2025-03-31
    13F 20,422,203 shares
    Change vs previous 13F +7,739,852 shares

    0.1% of the 13F portfolio, value $825,669,668.

    13F-HR 0000950123-25-004922 filed by UBS Group AG
    Filed (acceptance time not in the bulk data set), ingested

    • UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC: 3,332,954 shares
    • UBS Group AG: 17,089,249 shares

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

  7. period ended2024-12-31
    13F 12,682,351 shares
    Change vs previous 13F +2,657,872 shares

    0.09% of the 13F portfolio, value $756,248,589.

    13F-HR 0000950123-25-002409 filed by UBS Group AG
    Filed (acceptance time not in the bulk data set), ingested

    • UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC: 4,592,516 shares
    • UBS Group AG: 8,089,835 shares

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

  8. period ended2024-09-30
    13F 10,024,479 shares
    Change vs previous 13F not available

    0.09% of the 13F portfolio, value $684,571,672.

    13F-HR 0000950123-24-011557 filed by UBS Group AG
    Filed (acceptance time not in the bulk data set), ingested

    • UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC: 3,711,428 shares
    • UBS Group AG: 6,313,051 shares

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