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Disclosery

Berkshire Hathaway Inc: M position timeline

Available 13F reports, 13D and 13G stakes and each Form 3, 4 and 5 line of Berkshire Hathaway Inc on M, newest first. How the timeline and the estimate are built.

Berkshire Hathaway Inc held 7,347,426 M 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 7,347,426 shares
    Change vs previous 13F +4,309,071 shares

    0.06% of the 13F portfolio, value $173,031,882.

    13F-HR 0001193125-26-352200 filed by Berkshire Hathaway 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 3,038,355 shares
    Change vs previous 13F not available

    0.02% of the 13F portfolio, value $54,963,842.

    13F-HR 0001193125-26-226661 filed by Berkshire Hathaway Inc
    Filed (acceptance time not in the bulk data set), ingested

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