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CONTRAVISORY INVESTMENT MANAGEMENT, INC.: BRK-B position timeline

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

CONTRAVISORY INVESTMENT MANAGEMENT, INC. held 2,298 BRK-B shares at 2026-09-30 per its 13F-HR filed 2026-10-13.

the latest 13F is the newest step

  1. period ended2026-09-30
    13F 2,298 shares
    Change vs previous 13F +211 shares

    0.21% of the 13F portfolio, value $1,144,289.

    13F-HR 0001580642-26-006868 filed by CONTRAVISORY INVESTMENT MANAGEMENT, INC.
    Accepted , ingested

  2. period ended2026-06-30
    13F 2,087 shares
    Change vs previous 13F -132 shares

    0.18% of the 13F portfolio, value $1,044,314.

    13F-HR 0001580642-26-004344 filed by CONTRAVISORY INVESTMENT 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 ended2026-03-31
    13F 2,219 shares
    Change vs previous 13F +60 shares

    0.22% of the 13F portfolio, value $1,063,345.

    13F-HR 0001580642-26-002567 filed by CONTRAVISORY INVESTMENT 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 ended2025-12-31
    13F 2,159 shares
    Change vs previous 13F -35 shares

    0.21% of the 13F portfolio, value $1,085,221.

    13F-HR 0001580642-26-000220 filed by CONTRAVISORY INVESTMENT 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 ended2025-09-30
    13F 2,194 shares
    Change vs previous 13F -77 shares

    0.21% of the 13F portfolio, value $1,103,012.

    13F-HR 0001580642-25-006507 filed by CONTRAVISORY INVESTMENT 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 ended2025-06-30
    13F 2,271 shares
    Change vs previous 13F +26 shares

    0.22% of the 13F portfolio, value $1,103,184.

    13F-HR 0001580642-25-004195 filed by CONTRAVISORY INVESTMENT 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 ended2025-03-31
    13F 2,245 shares
    Change vs previous 13F +1,028 shares

    0.25% of the 13F portfolio, value $1,195,642.

    13F-HR 0001580642-25-002299 filed by CONTRAVISORY INVESTMENT 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 ended2024-12-31
    13F 1,217 shares
    Change vs previous 13F not available

    0.12% of the 13F portfolio, value $551,642.

    13F-HR 0001580642-25-000297 filed by CONTRAVISORY INVESTMENT MANAGEMENT, INC.
    Filed (acceptance time not in the bulk data set), ingested

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