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Alyeska Investment Group, L.P.: AMT position timeline

Available 13F reports, 13D and 13G stakes and each Form 3, 4 and 5 line of Alyeska Investment Group, L.P. on AMT, newest first. How the timeline and the estimate are built.

Alyeska Investment Group, L.P. held 828,424 AMT 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 828,424 shares
    Change vs previous 13F +524,590 shares

    0.35% of the 13F portfolio, value $135,505,314.

    13F-HR 0001172661-26-003737 filed by Alyeska Investment Group, 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 303,834 shares
    Change vs previous 13F +303,834 shares

    0.15% of the 13F portfolio, value $52,435,672.

    13F-HR 0001172661-26-002284 filed by Alyeska Investment Group, 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 ended2025-06-30
    13F 0 shares
    Change vs previous 13F -745,070 shares

    13F-HR 0001172661-25-003461 filed by Alyeska Investment Group, L.P.
    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.

  4. period ended2025-03-31
    13F 745,070 shares
    Change vs previous 13F +745,070 shares

    0.65% of the 13F portfolio, value $162,127,232.

    13F-HR 0001172661-25-002312 filed by Alyeska Investment Group, 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 ended2024-12-31
    13F 0 shares
    Change vs previous 13F -890 shares

    13F-HR 0001172661-25-001146 filed by Alyeska Investment Group, L.P.
    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.

  6. period ended2024-09-30
    13F 890 shares
    Change vs previous 13F not available

    <0.01% of the 13F portfolio, value $206,978.

    13F-HR 0001172661-24-005186 filed by Alyeska Investment Group, L.P.
    Filed (acceptance time not in the bulk data set), ingested

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