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Main Street Research LLC: MCK position timeline

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

Main Street Research LLC held 28,475 MCK 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 28,475 shares
    Change vs previous 13F -39,299 shares

    1.02% of the 13F portfolio, value $21,516,028.

    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 67,774 shares
    Change vs previous 13F +413 shares

    3.41% of the 13F portfolio, value $58,649,241.

    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 67,361 shares
    Change vs previous 13F -1,531 shares

    3.16% of the 13F portfolio, value $55,311,065.

    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 68,892 shares
    Change vs previous 13F -286 shares

    2.88% of the 13F portfolio, value $53,222,060.

    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 69,178 shares
    Change vs previous 13F +522 shares

    3.16% of the 13F portfolio, value $50,741,267.

    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 68,656 shares
    Change vs previous 13F +852 shares

    3.02% of the 13F portfolio, value $46,253,618.

    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 67,804 shares
    Change vs previous 13F +1,836 shares

    2.41% of the 13F portfolio, value $38,689,905.

    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 65,968 shares
    Change vs previous 13F not available

    2.06% of the 13F portfolio, value $32,687,138.

    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).