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Disclosery

SWF LLC: BRK-B position timeline

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

SWF LLC held 584,092 BRK-B shares at 2026-06-30 per its 13F-HR filed 2026-08-13.

the latest 13F is the newest step

  1. period ended2026-06-30
    13F 584,092 shares
    Change vs previous 13F 0 shares

    19.56% of the 13F portfolio, value $292,273,796.

    13F-HR 0000900440-26-000045 filed by SWF 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 584,092 shares
    Change vs previous 13F 0 shares

    24.41% of the 13F portfolio, value $279,896,886.

    13F-HR 0000900440-26-000038 filed by SWF 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 584,092 shares
    Change vs previous 13F 0 shares

    29.69% of the 13F portfolio, value $293,593,844.

    13F-HR 0000900440-26-000005 filed by SWF 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 584,092 shares
    Change vs previous 13F 0 shares

    30.1% of the 13F portfolio, value $293,646,412.

    13F-HR 0000900440-25-000308 filed by SWF 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 584,092 shares
    Change vs previous 13F 0 shares

    32.96% of the 13F portfolio, value $283,734,371.

    13F-HR 0000900440-25-000274 filed by SWF 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 584,092 shares
    Change vs previous 13F +8,105 shares

    87.01% of the 13F portfolio, value $311,075,717.

    13F-HR 0000900440-25-000199 filed by SWF 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 575,987 shares
    Change vs previous 13F 0 shares

    88.46% of the 13F portfolio, value $261,083,387.

    13F-HR 0000900440-25-000198 filed by SWF 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 575,987 shares
    Change vs previous 13F not available

    88.47% of the 13F portfolio, value $265,103,776.

    13F-HR 0000900440-25-000197 filed by SWF LLC
    Filed (acceptance time not in the bulk data set), ingested

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