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Disclosery

Main Street Research LLC: MRK position timeline

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

Main Street Research LLC held 8,298 MRK shares at 2026-06-30 per its 13F-HR filed 2026-07-29.

the latest 13F is the newest step

  1. period ended2026-06-30
    13F 8,298 shares
    Change vs previous 13F -1,223 shares

    0.05% of the 13F portfolio, value $1,066,293.

    13F-HR 0001420506-26-001335 filed by Main Street Research LLC
    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 9,521 shares
    Change vs previous 13F +1,737 shares

    0.07% of the 13F portfolio, value $1,145,295.

    13F-HR 0001420506-26-000773 filed by Main Street Research LLC
    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 7,784 shares
    Change vs previous 13F -1,486 shares

    0.05% of the 13F portfolio, value $825,960.

    13F-HR 0001420506-26-000210 filed by Main Street Research LLC
    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 9,270 shares
    Change vs previous 13F +302 shares

    0.04% of the 13F portfolio, value $778,031.

    13F-HR 0001420506-25-003188 filed by Main Street Research LLC
    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 8,968 shares
    Change vs previous 13F -262 shares

    0.04% of the 13F portfolio, value $717,171.

    13F-HR 0001420506-25-001710 filed by Main Street Research LLC
    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 9,230 shares
    Change vs previous 13F -437 shares

    0.05% of the 13F portfolio, value $836,303.

    13F-HR 0001420506-25-000840 filed by Main Street Research LLC
    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 9,667 shares
    Change vs previous 13F -22 shares

    0.06% of the 13F portfolio, value $969,584.

    13F-HR 0001420506-25-000201 filed by Main Street Research LLC
    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 9,689 shares
    Change vs previous 13F not available

    0.07% of the 13F portfolio, value $1,107,763.

    13F-HR 0001941040-24-000499 filed by Main Street Research LLC
    Filed (acceptance time not in the bulk data set), ingested

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