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CONWAY CAPITAL MANAGEMENT, INC.: BRK-B position timeline

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

CONWAY CAPITAL MANAGEMENT, INC. held 19,111 BRK-B shares at 2026-06-30 per its 13F-HR filed 2026-08-07.

the latest 13F is the newest step

  1. period ended2026-06-30
    13F 19,111 shares
    Change vs previous 13F -108 shares

    4.26% of the 13F portfolio, value $9,562,953.

    13F-HR 0001214659-26-009767 filed by CONWAY CAPITAL MANAGEMENT, INC.
    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 19,219 shares
    Change vs previous 13F -75 shares

    4.31% of the 13F portfolio, value $9,209,745.

    13F-HR 0001214659-26-005692 filed by CONWAY CAPITAL MANAGEMENT, INC.
    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 19,294 shares
    Change vs previous 13F -238 shares

    4.11% of the 13F portfolio, value $9,698,129.

    13F-HR 0001214659-26-001264 filed by CONWAY CAPITAL MANAGEMENT, INC.
    Filed (acceptance time not in the bulk data set), ingested

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

  4. period ended2025-09-30
    13F 19,532 shares
    Change vs previous 13F -359 shares

    4.12% of the 13F portfolio, value $9,819,518.

    13F-HR 0001214659-25-015257 filed by CONWAY CAPITAL MANAGEMENT, INC.
    Filed (acceptance time not in the bulk data set), ingested

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

  5. period ended2025-06-30
    13F 19,891 shares
    Change vs previous 13F +327 shares

    4.32% of the 13F portfolio, value $9,662,451.

    13F-HR 0001214659-25-011023 filed by CONWAY CAPITAL MANAGEMENT, INC.
    Filed (acceptance time not in the bulk data set), ingested

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

  6. period ended2025-03-31
    13F 19,564 shares
    Change vs previous 13F +7,049 shares

    5.21% of the 13F portfolio, value $10,419,395.

    13F-HR 0001214659-25-006050 filed by CONWAY CAPITAL MANAGEMENT, INC.
    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 12,515 shares
    Change vs previous 13F +2,830 shares

    2.51% of the 13F portfolio, value $5,672,799.

    13F-HR 0001214659-25-000925 filed by CONWAY CAPITAL MANAGEMENT, INC.
    Filed (acceptance time not in the bulk data set), ingested

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

  8. period ended2024-09-30
    13F 9,685 shares
    Change vs previous 13F not available

    2.16% of the 13F portfolio, value $4,457,618.

    13F-HR 0001214659-24-019241 filed by CONWAY CAPITAL MANAGEMENT, INC.
    Filed (acceptance time not in the bulk data set), ingested

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