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Disclosery

UBS Group AG: MRK position timeline

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

UBS Group AG held 33,291,954 MRK 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 33,291,954 shares
    Change vs previous 13F -1,056,495 shares

    0.36% of the 13F portfolio, value $4,278,016,108.

    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: 19,547,171 shares
    • UBS Group AG: 13,744,783 shares

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

  2. period ended2026-03-31
    13F 34,348,449 shares
    Change vs previous 13F -4,263,226 shares

    0.4% of the 13F portfolio, value $4,131,774,945.

    13F-HR 0000861177-26-000003 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: 20,414,819 shares
    • UBS Group AG: 13,933,630 shares

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

  3. period ended2025-12-31
    13F 38,611,675 shares
    Change vs previous 13F +1,955,802 shares

    0.42% of the 13F portfolio, value $4,064,264,911.

    13F-HR 0000861177-26-000001 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: 19,433,403 shares
    • UBS Group AG: 19,178,272 shares

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

  4. period ended2025-09-30
    13F 36,655,873 shares
    Change vs previous 13F -5,378,270 shares

    0.32% of the 13F portfolio, value $3,076,527,422.

    13F-HR 0001193125-25-282311 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: 19,749,865 shares
    • UBS Group AG: 16,906,008 shares

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

  5. period ended2025-06-30
    13F 42,034,143 shares
    Change vs previous 13F +235,397 shares

    0.34% of the 13F portfolio, value $3,327,422,760.

    13F-HR 0000950123-25-008300 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: 25,133,329 shares
    • UBS Group AG: 16,900,814 shares

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

  6. period ended2025-03-31
    13F 41,798,746 shares
    Change vs previous 13F +2,979,699 shares

    0.45% of the 13F portfolio, value $3,751,855,441.

    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: 20,737,477 shares
    • UBS Group AG: 21,061,269 shares

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

  7. period ended2024-12-31
    13F 38,819,047 shares
    Change vs previous 13F +5,756,684 shares

    0.44% of the 13F portfolio, value $3,861,718,795.

    13F-HR 0000950123-25-002466 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: 21,547,758 shares
    • UBS Group AG: 17,271,289 shares

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

  8. period ended2024-09-30
    13F 33,062,363 shares
    Change vs previous 13F not available

    0.5% of the 13F portfolio, value $3,754,561,944.

    13F-HR 0000950123-24-011473 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: 17,756,021 shares
    • UBS Group AG: 15,306,342 shares

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