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CenterBook Partners LP: BRK-B position timeline

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

CenterBook Partners LP held 56,229 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 56,229 shares
    Change vs previous 13F +7,107 shares

    1.38% of the 13F portfolio, value $28,136,429.

    13F-HR 0001872738-26-000010 filed by CenterBook Partners LP
    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 49,122 shares
    Change vs previous 13F +748 shares

    1.26% of the 13F portfolio, value $23,539,262.

    13F-HR 0001872738-26-000008 filed by CenterBook Partners LP
    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 48,374 shares
    Change vs previous 13F +1,029 shares

    1.19% of the 13F portfolio, value $24,315,191.

    13F-HR 0000902664-26-000841 filed by CenterBook Partners LP
    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 47,345 shares
    Change vs previous 13F -23,707 shares

    1.18% of the 13F portfolio, value $23,802,225.

    13F-HR 0000902664-25-004789 filed by CenterBook Partners LP
    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 71,052 shares
    Change vs previous 13F +22,500 shares

    1.92% of the 13F portfolio, value $34,514,930.

    13F-HR 0000902664-25-003518 filed by CenterBook Partners LP
    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 48,552 shares
    Change vs previous 13F -24,535 shares

    1.65% of the 13F portfolio, value $25,857,824.

    13F-HR 0000902664-25-002221 filed by CenterBook Partners LP
    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 73,087 shares
    Change vs previous 13F +13,706 shares

    1.98% of the 13F portfolio, value $33,128,875.

    13F-HR 0000902664-25-000921 filed by CenterBook Partners LP
    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 59,381 shares
    Change vs previous 13F not available

    1.68% of the 13F portfolio, value $27,330,699.

    13F-HR 0000902664-24-006587 filed by CenterBook Partners LP
    Filed (acceptance time not in the bulk data set), ingested

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