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Disclosery

Asset Management One Co., Ltd.: MRK position timeline

Available 13F reports, 13D and 13G stakes and each Form 3, 4 and 5 line of Asset Management One Co., Ltd. on MRK, newest first. How the timeline and the estimate are built.

Asset Management One Co., Ltd. held 1,380,043 MRK shares at 2026-06-30 per its 13F-HR filed 2026-07-28.

the latest 13F is the newest step

  1. period ended2026-06-30
    13F 1,380,043 shares
    Change vs previous 13F -61,263 shares

    0.46% of the 13F portfolio, value $177,335,526.

    13F-HR 0001193125-26-318819 filed by Asset Management One Co., Ltd.
    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 1,441,306 shares
    Change vs previous 13F +91,333 shares

    0.51% of the 13F portfolio, value $173,374,699.

    13F-HR 0001193125-26-213217 filed by Asset Management One Co., Ltd.
    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 1,349,973 shares
    Change vs previous 13F +9,397 shares

    0.4% of the 13F portfolio, value $143,911,039.

    13F-HR 0001193125-26-023286 filed by Asset Management One Co., Ltd.
    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 1,340,576 shares
    Change vs previous 13F +55,089 shares

    0.33% of the 13F portfolio, value $112,514,544.

    13F-HR 0001193125-25-245770 filed by Asset Management One Co., Ltd.
    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 1,285,487 shares
    Change vs previous 13F -7,134 shares

    0.32% of the 13F portfolio, value $101,759,151.

    13F-HR 0000950123-25-006830 filed by Asset Management One Co., Ltd.
    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 1,292,621 shares
    Change vs previous 13F +22,556 shares

    0.4% of the 13F portfolio, value $116,025,661.

    13F-HR 0000950123-25-003633 filed by Asset Management One Co., Ltd.
    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 1,270,065 shares
    Change vs previous 13F +6,779 shares

    0.44% of the 13F portfolio, value $126,622,243.

    13F-HR 0000950123-25-000714 filed by Asset Management One Co., Ltd.
    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 1,263,286 shares
    Change vs previous 13F not available

    0.51% of the 13F portfolio, value $143,458,758.

    13F-HR 0000950123-24-010027 filed by Asset Management One Co., Ltd.
    Filed (acceptance time not in the bulk data set), ingested

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