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Disclosery

BlackRock, Inc.: MRK position timeline

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

BlackRock, Inc. held 226,999,837 MRK shares at 2026-06-30 per its 13F-HR filed 2026-08-07.

the latest 13F is the newest step

  1. period ended2026-06-30
    13F 226,999,837 shares
    Change vs previous 13F +1,169,507 shares

    0.43% of the 13F portfolio, value $29,169,479,139.

    13F-HR 0002012383-26-003238 filed by BlackRock, Inc.
    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 225,830,330 shares
    Change vs previous 13F +6,734,865 shares

    0.48% of the 13F portfolio, value $27,165,130,301.

    13F-HR 0002012383-26-001841 filed by BlackRock, Inc.
    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 219,095,465 shares
    Change vs previous 13F +4,218,865 shares

    0.39% of the 13F portfolio, value $23,061,988,586.

    13F-HR 0002012383-26-000920 filed by BlackRock, Inc.
    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 214,876,600 shares
    Change vs previous 13F -3,464,232 shares

    0.32% of the 13F portfolio, value $18,034,593,047.

    13F-HR 0002012383-25-002949 filed by BlackRock, Inc.
    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 218,340,832 shares
    Change vs previous 13F -7,057,399 shares

    0.33% of the 13F portfolio, value $17,283,860,233.

    13F-HR 0001060021-25-000120 filed by BlackRock, Inc.
    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 225,398,231 shares
    Change vs previous 13F +3,316,386 shares

    0.43% of the 13F portfolio, value $20,231,745,187.

    13F-HR 0001576419-25-000869 filed by BlackRock, Inc.
    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 222,081,845 shares
    Change vs previous 13F +10,022,108 shares

    0.45% of the 13F portfolio, value $22,092,701,902.

    13F-HR 0001060021-25-000002 filed by BlackRock, Inc.
    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 212,059,737 shares
    Change vs previous 13F not available

    0.51% of the 13F portfolio, value $24,081,503,700.

    13F-HR 0001426459-24-000006 filed by BlackRock, Inc.
    Filed (acceptance time not in the bulk data set), ingested

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