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Disclosery

IMC-Chicago, LLC: RBRK position timeline

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

IMC-Chicago, LLC held 71,035 RBRK shares at 2026-06-30 per its 13F-HR filed 2026-08-06.

the latest 13F is the newest step

  1. period ended2026-06-30
    13F 71,035 shares
    Change vs previous 13F +24,470 shares

    0.05% of the 13F portfolio, value $5,702,690.

    13F-HR 0001452861-26-000006 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).

  2. period ended2026-03-31
    13F 46,565 shares
    Change vs previous 13F +46,565 shares

    0.03% of the 13F portfolio, value $2,280,288.

    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).

  3. period ended2025-12-31
    13F 0 shares
    Change vs previous 13F -58,635 shares

    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).

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

  4. period ended2025-09-30
    13F 58,635 shares
    Change vs previous 13F +41,716 shares

    0.09% of the 13F portfolio, value $4,822,729.

    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).

  5. period ended2025-06-30
    13F 16,919 shares
    Change vs previous 13F -32,485 shares

    0.04% of the 13F portfolio, value $1,515,773.

    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).

  6. period ended2025-03-31
    13F 49,404 shares
    Change vs previous 13F +49,404 shares

    0.12% of the 13F portfolio, value $3,012,656.

    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).

  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.