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Disclosery

Ruane, Cunniff & Goldfarb L.P.: AMTM position timeline

Available 13F reports, 13D and 13G stakes and each Form 3, 4 and 5 line of Ruane, Cunniff & Goldfarb L.P. on AMTM, newest first. How the timeline and the estimate are built.

Ruane, Cunniff & Goldfarb L.P. held 537,213 AMTM 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 537,213 shares
    Change vs previous 13F -1,085,769 shares

    0.17% of the 13F portfolio, value $11,104,193.

    13F-HR 0000919574-26-005176 filed by Ruane, Cunniff & Goldfarb L.P.
    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 1,622,982 shares
    Change vs previous 13F -771,147 shares

    0.7% of the 13F portfolio, value $42,327,370.

    13F-HR 0000919574-26-003132 filed by Ruane, Cunniff & Goldfarb L.P.
    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 2,394,129 shares
    Change vs previous 13F -29,619 shares

    1.08% of the 13F portfolio, value $69,429,741.

    13F-HR 0000919574-26-000775 filed by Ruane, Cunniff & Goldfarb L.P.
    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 2,423,748 shares
    Change vs previous 13F -17,995 shares

    0.96% of the 13F portfolio, value $58,048,765.

    13F-HR 0000919574-25-006759 filed by Ruane, Cunniff & Goldfarb L.P.
    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 2,441,743 shares
    Change vs previous 13F +48,704 shares

    0.99% of the 13F portfolio, value $57,649,558.

    13F-HR 0000919574-25-004628 filed by Ruane, Cunniff & Goldfarb L.P.
    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 2,393,039 shares
    Change vs previous 13F -43,255 shares

    0.79% of the 13F portfolio, value $43,553,310.

    13F-HR 0000919574-25-003038 filed by Ruane, Cunniff & Goldfarb L.P.
    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 2,436,294 shares
    Change vs previous 13F -94,195 shares

    0.87% of the 13F portfolio, value $51,235,263.

    13F-HR 0000919574-25-001168 filed by Ruane, Cunniff & Goldfarb L.P.
    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 2,530,489 shares
    Change vs previous 13F not available

    1.28% of the 13F portfolio, value $81,608,270.

    13F-HR 0000919574-24-006465 filed by Ruane, Cunniff & Goldfarb L.P.
    Filed (acceptance time not in the bulk data set), ingested

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