Skip to content
Disclosery

PROSPECTOR PARTNERS LLC: BRK-B position timeline

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

PROSPECTOR PARTNERS LLC held 9,000 BRK-B shares at 2025-12-31 per its 13F-HR filed 2026-02-13.

the latest 13F is the newest step

  1. period ended2025-12-31
    13F 9,000 shares
    Change vs previous 13F -55,810 shares

    9.69% of the 13F portfolio, value $4,523,850.

    13F-HR 0001398344-26-003043 filed by PROSPECTOR PARTNERS LLC
    Filed (acceptance time not in the bulk data set), ingested

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

  2. period ended2025-09-30
    13F 64,810 shares
    Change vs previous 13F 0 shares

    3.92% of the 13F portfolio, value $32,582,579.

    13F-HR 0001398344-25-020530 filed by PROSPECTOR PARTNERS LLC
    Filed (acceptance time not in the bulk data set), ingested

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

  3. period ended2025-06-30
    13F 64,810 shares
    Change vs previous 13F 0 shares

    3.65% of the 13F portfolio, value $31,482,754.

    13F-HR 0001398344-25-014823 filed by PROSPECTOR PARTNERS LLC
    Filed (acceptance time not in the bulk data set), ingested

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

  4. period ended2025-03-31
    13F 64,810 shares
    Change vs previous 13F 0 shares

    3.94% of the 13F portfolio, value $34,516,510.

    13F-HR 0001398344-25-009285 filed by PROSPECTOR PARTNERS LLC
    Filed (acceptance time not in the bulk data set), ingested

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

  5. period ended2024-12-31
    13F 64,810 shares
    Change vs previous 13F -13,500 shares

    3.33% of the 13F portfolio, value $29,377,077.

    13F-HR 0001398344-25-002611 filed by PROSPECTOR PARTNERS LLC
    Filed (acceptance time not in the bulk data set), ingested

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

  6. period ended2024-09-30
    13F 78,310 shares
    Change vs previous 13F 0 shares

    3.85% of the 13F portfolio, value $36,042,961.

    13F-HR 0001398344-24-020566 filed by PROSPECTOR PARTNERS LLC
    Filed (acceptance time not in the bulk data set), ingested

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

  7. period ended2024-06-30
    13F 78,310 shares
    Change vs previous 13F not available

    3.73% of the 13F portfolio, value $31,856,508.

    13F-HR 0001398344-24-014535 filed by PROSPECTOR PARTNERS LLC
    Filed (acceptance time not in the bulk data set), ingested

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