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Ipswich Investment Management Co., Inc.: BRK-B position timeline

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

Ipswich Investment Management Co., Inc. held 1,809 BRK-B shares at 2026-09-30 per its 13F-HR filed 2026-10-13.

the latest 13F is the newest step

  1. period ended2026-09-30
    13F 1,809 shares
    Change vs previous 13F 0 shares

    0.19% of the 13F portfolio, value $900,792.

    13F-HR 0001398344-26-018114 filed by Ipswich Investment Management Co., Inc.
    Accepted , ingested

  2. period ended2026-06-30
    13F 1,809 shares
    Change vs previous 13F 0 shares

    0.19% of the 13F portfolio, value $905,206.

    13F-HR 0001398344-26-012196 filed by Ipswich Investment Management Co., Inc.
    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 1,809 shares
    Change vs previous 13F +750 shares

    0.2% of the 13F portfolio, value $866,873.

    13F-HR 0001398344-26-006386 filed by Ipswich Investment Management Co., Inc.
    Filed (acceptance time not in the bulk data set), ingested

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

  4. period ended2025-12-31
    13F 1,059 shares
    Change vs previous 13F +134 shares

    0.12% of the 13F portfolio, value $532,306.

    13F-HR 0001398344-26-000773 filed by Ipswich Investment Management Co., Inc.
    Filed (acceptance time not in the bulk data set), ingested

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

  5. period ended2025-09-30
    13F 925 shares
    Change vs previous 13F 0 shares

    0.11% of the 13F portfolio, value $465,035.

    13F-HR 0001398344-25-019010 filed by Ipswich Investment Management Co., Inc.
    Filed (acceptance time not in the bulk data set), ingested

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

  6. period ended2025-06-30
    13F 925 shares
    Change vs previous 13F 0 shares

    0.11% of the 13F portfolio, value $449,337.

    13F-HR 0001398344-25-013196 filed by Ipswich Investment Management Co., Inc.
    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 925 shares
    Change vs previous 13F 0 shares

    0.12% of the 13F portfolio, value $492,637.

    13F-HR 0001398344-25-007204 filed by Ipswich Investment Management Co., Inc.
    Filed (acceptance time not in the bulk data set), ingested

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

  8. period ended2024-12-31
    13F 925 shares
    Change vs previous 13F not available

    0.1% of the 13F portfolio, value $419,284.

    13F-HR 0001398344-25-001691 filed by Ipswich Investment Management Co., Inc.
    Filed (acceptance time not in the bulk data set), ingested

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