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Main Street Research LLC: BCS position timeline

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

Main Street Research LLC held 1,621,490 BCS 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 1,621,490 shares
    Change vs previous 13F +770,519 shares

    2.06% of the 13F portfolio, value $43,553,224.

    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 850,971 shares
    Change vs previous 13F -831,866 shares

    1.05% of the 13F portfolio, value $18,006,546.

    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 1,682,837 shares
    Change vs previous 13F -12,148 shares

    2.45% of the 13F portfolio, value $42,828,202.

    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 1,694,985 shares
    Change vs previous 13F not available

    1.89% of the 13F portfolio, value $35,035,340.

    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).