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Disclosery

S&CO INC: MRK position timeline

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

S&CO INC held 425,528 MRK shares at 2026-06-30 per its 13F-HR filed 2026-08-06.

the latest 13F is the newest step

  1. period ended2026-06-30
    13F 425,528 shares
    Change vs previous 13F 0 shares

    3.16% of the 13F portfolio, value $54,680,000.

    13F-HR 0001082461-26-000003 filed by S&CO 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 425,528 shares
    Change vs previous 13F -3 shares

    3.18% of the 13F portfolio, value $51,186,000.

    13F-HR 0001082461-26-000002 filed by S&CO 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 425,531 shares
    Change vs previous 13F +3,000 shares

    2.78% of the 13F portfolio, value $44,791,000.

    13F-HR 0001082461-26-000001 filed by S&CO 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 422,531 shares
    Change vs previous 13F -3,340 shares

    2.17% of the 13F portfolio, value $35,463,000.

    13F-HR 0001082461-25-000005 filed by S&CO 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 425,871 shares
    Change vs previous 13F -712 shares

    2.16% of the 13F portfolio, value $33,712,000.

    13F-HR 0001082461-25-000003 filed by S&CO 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 426,583 shares
    Change vs previous 13F +23,216 shares

    2.57% of the 13F portfolio, value $38,290,000.

    13F-HR 0001082461-25-000002 filed by S&CO 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 403,367 shares
    Change vs previous 13F +55 shares

    2.72% of the 13F portfolio, value $40,126,000.

    13F-HR 0001082461-25-000001 filed by S&CO 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 403,312 shares
    Change vs previous 13F not available

    2.99% of the 13F portfolio, value $45,800,000.

    13F-HR 0001082461-24-000005 filed by S&CO INC
    Filed (acceptance time not in the bulk data set), ingested

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