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Disclosery

TETRAD CORP: BRK-B position timeline

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

TETRAD CORP held 1,923,123 BRK-B shares at 2026-09-30 per its 13F-HR filed 2026-10-06.

the latest 13F is the newest step

  1. period ended2026-09-30
    13F 1,923,123 shares
    Change vs previous 13F 0 shares

    92.27% of the 13F portfolio, value $957,619,098.

    13F-HR 0000883597-26-000008 filed by TETRAD CORP
    Accepted , ingested

  2. period ended2026-06-30
    13F 1,923,123 shares
    Change vs previous 13F 0 shares

    92.03% of the 13F portfolio, value $962,311,518.

    13F-HR 0000883597-26-000003 filed by TETRAD CORP
    Filed (acceptance time not in the bulk data set), ingested

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

  3. period ended2026-03-31
    13F 1,923,123 shares
    Change vs previous 13F 0 shares

    92.15% of the 13F portfolio, value $921,560,542.

    13F-HR 0000900440-26-000035 filed by TETRAD CORP
    Filed (acceptance time not in the bulk data set), ingested

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

  4. period ended2025-12-31
    13F 1,923,123 shares
    Change vs previous 13F 0 shares

    92.96% of the 13F portfolio, value $966,657,776.

    13F-HR 0000900440-26-000001 filed by TETRAD CORP
    Filed (acceptance time not in the bulk data set), ingested

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

  5. period ended2025-09-30
    13F 1,923,123 shares
    Change vs previous 13F 0 shares

    90.41% of the 13F portfolio, value $966,830,857.

    13F-HR 0000900440-25-000307 filed by TETRAD CORP
    Filed (acceptance time not in the bulk data set), ingested

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

  6. period ended2025-06-30
    13F 1,923,123 shares
    Change vs previous 13F 0 shares

    90.51% of the 13F portfolio, value $934,195,460.

    13F-HR 0000900440-25-000262 filed by TETRAD CORP
    Filed (acceptance time not in the bulk data set), ingested

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

  7. period ended2025-03-31
    13F 1,923,123 shares
    Change vs previous 13F 0 shares

    91.34% of the 13F portfolio, value $1,024,216,847.

    13F-HR 0000900440-25-000166 filed by TETRAD CORP
    Filed (acceptance time not in the bulk data set), ingested

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

  8. period ended2024-12-31
    13F 1,923,123 shares
    Change vs previous 13F not available

    89.53% of the 13F portfolio, value $871,713,193.

    13F-HR 0000900440-25-000165 filed by TETRAD CORP
    Filed (acceptance time not in the bulk data set), ingested

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