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SYNTAX RESEARCH, INC.: BRK-B position timeline

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

SYNTAX RESEARCH, INC. held 1,012 BRK-B shares at 2026-06-30 per its 13F-HR filed 2026-07-31.

the latest 13F is the newest step

  1. period ended2026-06-30
    13F 1,012 shares
    Change vs previous 13F 0 shares

    0.37% of the 13F portfolio, value $506,395.

    13F-HR 0001398344-26-013177 filed by SYNTAX RESEARCH, INC.
    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 1,012 shares
    Change vs previous 13F -12 shares

    0.31% of the 13F portfolio, value $484,951.

    13F-HR 0001398344-26-007193 filed by SYNTAX RESEARCH, INC.
    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 1,024 shares
    Change vs previous 13F 0 shares

    0.32% of the 13F portfolio, value $514,714.

    13F-HR 0001398344-26-001787 filed by SYNTAX RESEARCH, INC.
    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 1,024 shares
    Change vs previous 13F 0 shares

    0.33% of the 13F portfolio, value $514,806.

    13F-HR 0001398344-25-020297 filed by SYNTAX RESEARCH, INC.
    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 1,024 shares
    Change vs previous 13F 0 shares

    0.35% of the 13F portfolio, value $497,429.

    13F-HR 0001398344-25-013375 filed by SYNTAX RESEARCH, INC.
    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 1,024 shares
    Change vs previous 13F 0 shares

    0.38% of the 13F portfolio, value $545,362.

    13F-HR 0001398344-25-008843 filed by SYNTAX RESEARCH, INC.
    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 1,024 shares
    Change vs previous 13F 0 shares

    0.33% of the 13F portfolio, value $464,159.

    13F-HR 0001398344-25-002436 filed by SYNTAX RESEARCH, INC.
    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 1,024 shares
    Change vs previous 13F not available

    0.32% of the 13F portfolio, value $471,307.

    13F-HR 0001398344-24-023327 filed by SYNTAX RESEARCH, INC.
    Filed (acceptance time not in the bulk data set), ingested

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