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Disclosery

Quantum Private Wealth, LLC: BRK-B position timeline

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

Quantum Private Wealth, LLC held 3,919 BRK-B 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 3,919 shares
    Change vs previous 13F -150 shares

    0.5% of the 13F portfolio, value $1,961,028.

    13F-HR 0001104659-26-088264 filed by Quantum Private Wealth, 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 4,069 shares
    Change vs previous 13F +120 shares

    0.6% of the 13F portfolio, value $1,949,865.

    13F-HR 0001104659-26-049289 filed by Quantum Private Wealth, 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 3,949 shares
    Change vs previous 13F -50 shares

    0.58% of the 13F portfolio, value $1,984,965.

    13F-HR 0001104659-26-011333 filed by Quantum Private Wealth, 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 3,999 shares
    Change vs previous 13F -65 shares

    0.59% of the 13F portfolio, value $2,010,457.

    13F-HR 0001104659-25-109035 filed by Quantum Private Wealth, 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 4,064 shares
    Change vs previous 13F 0 shares

    0.64% of the 13F portfolio, value $1,974,169.

    13F-HR 0001104659-25-076731 filed by Quantum Private Wealth, 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 4,064 shares
    Change vs previous 13F not available

    0.82% of the 13F portfolio, value $2,164,405.

    13F-HR 0001172661-25-001753 filed by Quantum Private Wealth, LLC
    Filed (acceptance time not in the bulk data set), ingested

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