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SEI INVESTMENTS CO: BRK-B position timeline

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

SEI INVESTMENTS CO held 471,309 BRK-B shares at 2026-06-30 per its 13F-HR filed 2026-08-14.

the latest 13F is the newest step

  1. period ended2026-06-30
    13F 471,309 shares
    Change vs previous 13F -120,051 shares

    0.21% of the 13F portfolio, value $235,828,515.

    13F-HR 0002048251-26-006553 filed by SEI INVESTMENTS CO
    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 591,360 shares
    Change vs previous 13F +55,126 shares

    0.26% of the 13F portfolio, value $283,387,686.

    13F-HR 0002048251-26-003739 filed by SEI INVESTMENTS CO
    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 536,234 shares
    Change vs previous 13F +143,041 shares

    0.27% of the 13F portfolio, value $269,540,494.

    13F-HR 0000350894-26-000005 filed by SEI INVESTMENTS CO
    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 393,193 shares
    Change vs previous 13F +18,321 shares

    0.21% of the 13F portfolio, value $197,674,519.

    13F-HR 0002048251-25-002343 filed by SEI INVESTMENTS CO
    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 374,872 shares
    Change vs previous 13F +20,362 shares

    0.21% of the 13F portfolio, value $182,101,809.

    13F-HR 0001041062-25-000162 filed by SEI INVESTMENTS CO
    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/A 354,510 shares
    Change vs previous 13F +21,231 shares

    0.24% of the 13F portfolio, value $188,808,062.

    13F-HR/A 0001041062-25-000106 filed by SEI INVESTMENTS CO
    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 333,279 shares
    Change vs previous 13F +501 shares

    0.19% of the 13F portfolio, value $151,070,601.

    13F-HR 0001041062-25-000019 filed by SEI INVESTMENTS CO
    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 332,778 shares
    Change vs previous 13F not available

    0.2% of the 13F portfolio, value $153,156,700.

    13F-HR 0001041062-24-000165 filed by SEI INVESTMENTS CO
    Filed (acceptance time not in the bulk data set), ingested

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