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CX Institutional: BRK-B position timeline

Available 13F reports, 13D and 13G stakes and each Form 3, 4 and 5 line of CX Institutional on BRK-B, newest first. How the timeline and the estimate are built.

CX Institutional held 15,666 BRK-B shares at 2026-09-30 per its 13F-HR filed 2026-10-02.

the latest 13F is the newest step

  1. period ended2026-09-30
    13F 15,666 shares
    Change vs previous 13F +615 shares

    0.21% of the 13F portfolio, value $7,801,000.

    13F-HR 0001737089-26-000006 filed by CX Institutional
    Accepted , ingested

  2. period ended2026-06-30
    13F 15,051 shares
    Change vs previous 13F -1,658 shares

    0.22% of the 13F portfolio, value $7,531,000.

    13F-HR 0001737089-26-000004 filed by CX Institutional
    Filed (acceptance time not in the bulk data set), ingested

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

  3. period ended2026-03-31
    13F 16,709 shares
    Change vs previous 13F -137 shares

    0.24% of the 13F portfolio, value $8,007,000.

    13F-HR 0001737089-26-000003 filed by CX Institutional
    Filed (acceptance time not in the bulk data set), ingested

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

  4. period ended2025-12-31
    13F 16,846 shares
    Change vs previous 13F -3,934 shares

    0.25% of the 13F portfolio, value $8,468,000.

    13F-HR 0001737089-26-000001 filed by CX Institutional
    Filed (acceptance time not in the bulk data set), ingested

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

  5. period ended2025-09-30
    13F 20,780 shares
    Change vs previous 13F +483 shares

    0.32% of the 13F portfolio, value $10,447,000.

    13F-HR 0001737089-25-000011 filed by CX Institutional
    Filed (acceptance time not in the bulk data set), ingested

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

  6. period ended2025-06-30
    13F/A 20,297 shares
    Change vs previous 13F +20,297 shares

    0.34% of the 13F portfolio, value $9,860,000.

    13F-HR/A 0001737089-25-000007 filed by CX Institutional
    Filed (acceptance time not in the bulk data set), ingested

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

  7. period ended2025-03-31
    13F 0 shares
    Change vs previous 13F -33,541 shares

    13F-HR 0001737089-25-000005 filed by CX Institutional
    Filed (acceptance time not in the bulk data set), ingested

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

    Exited: the 13F for this period no longer lists the position.

  8. period ended2024-12-31
    13F 33,541 shares
    Change vs previous 13F not available

    0.6% of the 13F portfolio, value $15,203,464.

    13F-HR 0001737089-25-000001 filed by CX Institutional
    Filed (acceptance time not in the bulk data set), ingested

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