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VIKING GLOBAL INVESTORS LP: AMT position timeline

Available 13F reports, 13D and 13G stakes and each Form 3, 4 and 5 line of VIKING GLOBAL INVESTORS LP on AMT, newest first. How the timeline and the estimate are built.

VIKING GLOBAL INVESTORS LP held 0 AMT shares at 2025-09-30 per its 13F-HR filed 2025-11-14.

the latest 13F is the newest step

  1. period ended2025-09-30
    13F 0 shares
    Change vs previous 13F -2,797,125 shares

    13F-HR 0001103804-25-000010 filed by VIKING GLOBAL INVESTORS LP
    Filed (acceptance time not in the bulk data set), ingested

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

    Exited: the 13F for this period no longer lists the position.

  2. period ended2025-06-30
    13F 2,797,125 shares
    Change vs previous 13F +1,958,329 shares

    1.79% of the 13F portfolio, value $618,220,568.

    13F-HR 0001103804-25-000007 filed by VIKING GLOBAL INVESTORS LP
    Filed (acceptance time not in the bulk data set), ingested

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

  3. period ended2025-03-31
    13F 838,796 shares
    Change vs previous 13F -58,544 shares

    0.58% of the 13F portfolio, value $182,522,010.

    13F-HR 0001103804-25-000004 filed by VIKING GLOBAL INVESTORS LP
    Filed (acceptance time not in the bulk data set), ingested

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

  4. period ended2024-12-31
    13F 897,340 shares
    Change vs previous 13F not available

    0.53% of the 13F portfolio, value $164,581,129.

    13F-HR 0001103804-25-000002 filed by VIKING GLOBAL INVESTORS LP
    Filed (acceptance time not in the bulk data set), ingested

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