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

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

Alyeska Investment Group, L.P. held 1,990,213 WMB 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 1,990,213 shares
    Change vs previous 13F +780,562 shares

    0.38% of the 13F portfolio, value $147,952,434.

    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 1,209,651 shares
    Change vs previous 13F -2,121,737 shares

    0.25% of the 13F portfolio, value $88,038,400.

    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 ended2025-12-31
    13F 3,331,388 shares
    Change vs previous 13F +2,445,420 shares

    0.57% of the 13F portfolio, value $200,249,733.

    13F-HR 0001172661-26-000737 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).

  4. period ended2025-09-30
    13F 885,968 shares
    Change vs previous 13F +552,109 shares

    0.17% of the 13F portfolio, value $56,126,073.

    13F-HR 0001172661-25-005150 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 ended2025-06-30
    13F 333,859 shares
    Change vs previous 13F -1,827,725 shares

    0.07% of the 13F portfolio, value $20,969,684.

    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).

  6. period ended2025-03-31
    13F 2,161,584 shares
    Change vs previous 13F +350,185 shares

    0.52% of the 13F portfolio, value $129,176,260.

    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).

  7. period ended2024-12-31
    13F 1,811,399 shares
    Change vs previous 13F not available

    0.37% of the 13F portfolio, value $98,032,914.

    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).