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Disclosery

IMC-Chicago, LLC: BRK-B position timeline

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

IMC-Chicago, LLC held 0 BRK-B shares at 2026-03-31 per its 13F-HR filed 2026-05-05.

the latest 13F is the newest step

  1. period ended2026-03-31
    13F 0 shares
    Change vs previous 13F -55,225 shares

    13F-HR 0001452861-26-000005 filed by IMC-Chicago, LLC
    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.

  2. period ended2025-12-31
    13F 55,225 shares
    Change vs previous 13F +8,711 shares

    0.49% of the 13F portfolio, value $27,758,846.

    13F-HR 0001452861-26-000003 filed by IMC-Chicago, LLC
    Filed (acceptance time not in the bulk data set), ingested

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

  3. period ended2025-09-30
    13F 46,514 shares
    Change vs previous 13F +29,820 shares

    0.41% of the 13F portfolio, value $23,384,448.

    13F-HR 0001452861-25-000006 filed by IMC-Chicago, LLC
    Filed (acceptance time not in the bulk data set), ingested

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

  4. period ended2025-06-30
    13F 16,694 shares
    Change vs previous 13F +16,694 shares

    0.2% of the 13F portfolio, value $8,109,444.

    13F-HR 0001452861-25-000005 filed by IMC-Chicago, LLC
    Filed (acceptance time not in the bulk data set), ingested

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

  5. period ended2025-03-31
    13F 0 shares
    Change vs previous 13F -50,643 shares

    13F-HR 0001452861-25-000002 filed by IMC-Chicago, LLC
    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.

  6. period ended2024-12-31
    13F 50,643 shares
    Change vs previous 13F +50,643 shares

    0.63% of the 13F portfolio, value $22,955,459.

    13F-HR 0001452861-25-000001 filed by IMC-Chicago, LLC
    Filed (acceptance time not in the bulk data set), ingested

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

  7. period ended2024-09-30
    13F 0 shares
    Change vs previous 13F not available

    13F-HR 0001452861-24-000005 filed by IMC-Chicago, LLC
    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.