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Tower Research Capital LLC (TRC): BRK-B position timeline

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

Tower Research Capital LLC (TRC) held 27,096 BRK-B shares at 2026-06-30 per its 13F-HR filed 2026-08-11.

the latest 13F is the newest step

  1. period ended2026-06-30
    13F 27,096 shares
    Change vs previous 13F -8,913 shares

    0.33% of the 13F portfolio, value $13,558,568.

    13F-HR 0001533421-26-000008 filed by Tower Research Capital LLC (TRC)
    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 36,009 shares
    Change vs previous 13F -15,227 shares

    0.45% of the 13F portfolio, value $17,255,513.

    13F-HR 0001533421-26-000006 filed by Tower Research Capital LLC (TRC)
    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 51,236 shares
    Change vs previous 13F +33,549 shares

    0.62% of the 13F portfolio, value $25,753,776.

    13F-HR 0001533421-26-000004 filed by Tower Research Capital LLC (TRC)
    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 17,687 shares
    Change vs previous 13F -50,443 shares

    0.25% of the 13F portfolio, value $8,891,963.

    13F-HR 0001533421-25-000019 filed by Tower Research Capital LLC (TRC)
    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 68,130 shares
    Change vs previous 13F -6,431 shares

    0.89% of the 13F portfolio, value $33,095,510.

    13F-HR 0001533421-25-000013 filed by Tower Research Capital LLC (TRC)
    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 74,561 shares
    Change vs previous 13F -53,909 shares

    1.17% of the 13F portfolio, value $39,293,647.

    13F-HR 0001533421-25-000007 filed by Tower Research Capital LLC (TRC)
    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 128,470 shares
    Change vs previous 13F +77,850 shares

    1.16% of the 13F portfolio, value $58,232,882.

    13F-HR 0001533421-25-000001 filed by Tower Research Capital LLC (TRC)
    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 50,620 shares
    Change vs previous 13F not available

    0.62% of the 13F portfolio, value $23,298,362.

    13F-HR 0001533421-24-000021 filed by Tower Research Capital LLC (TRC)
    Filed (acceptance time not in the bulk data set), ingested

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