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Disclosery

Rossby Financial, LCC: BRK-B position timeline

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

Rossby Financial, LCC held 2,069 BRK-B shares at 2026-06-30 per its 13F-HR filed 2026-08-04.

the latest 13F is the newest step

  1. period ended2026-06-30
    13F 2,069 shares
    Change vs previous 13F -650 shares

    0.18% of the 13F portfolio, value $1,002,002.

    13F-HR 0002056510-26-000003 filed by Rossby Financial, LCC
    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 2,719 shares
    Change vs previous 13F +589 shares

    0.27% of the 13F portfolio, value $1,301,042.

    13F-HR 0002056510-26-000002 filed by Rossby Financial, LCC
    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 2,130 shares
    Change vs previous 13F +156 shares

    0.34% of the 13F portfolio, value $1,070,645.

    13F-HR 0002056510-26-000001 filed by Rossby Financial, LCC
    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 1,974 shares
    Change vs previous 13F +31 shares

    0.33% of the 13F portfolio, value $983,447.

    13F-HR 0002056510-25-000005 filed by Rossby Financial, LCC
    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 1,943 shares
    Change vs previous 13F +69 shares

    0.35% of the 13F portfolio, value $943,851.

    13F-HR 0002056510-25-000003 filed by Rossby Financial, LCC
    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 1,874 shares
    Change vs previous 13F +621 shares

    0.43% of the 13F portfolio, value $995,019.

    13F-HR 0002056510-25-000002 filed by Rossby Financial, LCC
    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 1,253 shares
    Change vs previous 13F not available

    0.36% of the 13F portfolio, value $567,960.

    13F-HR 0002056510-25-000001 filed by Rossby Financial, LCC
    Filed (acceptance time not in the bulk data set), ingested

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