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QUADRANT CAPITAL GROUP LLC: BRK-B position timeline

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

QUADRANT CAPITAL GROUP LLC held 46,476 BRK-B shares at 2026-06-30 per its 13F-HR filed 2026-08-14.

the latest 13F is the newest step

  1. period ended2026-06-30
    13F 46,476 shares
    Change vs previous 13F -10,178 shares

    0.64% of the 13F portfolio, value $23,256,126.

    13F-HR 0001650717-26-000005 filed by QUADRANT CAPITAL GROUP 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/A 56,654 shares
    Change vs previous 13F +2,975 shares

    0.81% of the 13F portfolio, value $27,148,597.

    13F-HR/A 0001650717-26-000003 filed by QUADRANT CAPITAL GROUP 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 53,679 shares
    Change vs previous 13F +1,225 shares

    0.82% of the 13F portfolio, value $26,981,750.

    13F-HR 0001650717-26-000001 filed by QUADRANT CAPITAL GROUP 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 52,454 shares
    Change vs previous 13F +6,760 shares

    0.86% of the 13F portfolio, value $26,370,724.

    13F-HR 0001650717-25-000006 filed by QUADRANT CAPITAL GROUP 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 45,694 shares
    Change vs previous 13F +11 shares

    0.8% of the 13F portfolio, value $22,196,775.

    13F-HR 0001085146-25-004949 filed by QUADRANT CAPITAL GROUP 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 45,683 shares
    Change vs previous 13F +23,357 shares

    0.9% of the 13F portfolio, value $24,329,853.

    13F-HR 0001650717-25-000002 filed by QUADRANT CAPITAL GROUP 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 22,326 shares
    Change vs previous 13F -34 shares

    0.7% of the 13F portfolio, value $10,119,930.

    13F-HR 0001650717-25-000001 filed by QUADRANT CAPITAL GROUP 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 22,360 shares
    Change vs previous 13F not available

    0.71% of the 13F portfolio, value $10,291,414.

    13F-HR 0001650717-24-000007 filed by QUADRANT CAPITAL GROUP LLC
    Filed (acceptance time not in the bulk data set), ingested

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