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BLAIR WILLIAM & CO/IL: WMB position timeline

Available 13F reports, 13D and 13G stakes and each Form 3, 4 and 5 line of BLAIR WILLIAM & CO/IL on WMB, newest first. How the timeline and the estimate are built.

BLAIR WILLIAM & CO/IL held 53,989 WMB shares at 2026-06-30 per its 13F-HR filed 2026-08-11.

the latest 13F is the newest step

  1. period ended2026-06-30
    13F 53,989 shares
    Change vs previous 13F +3,656 shares

    0.01% of the 13F portfolio, value $4,013,543.

    13F-HR 0001104659-26-093821 filed by BLAIR WILLIAM & CO/IL
    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 50,333 shares
    Change vs previous 13F -25,441 shares

    0.01% of the 13F portfolio, value $3,663,247.

    13F-HR 0001104659-26-057897 filed by BLAIR WILLIAM & CO/IL
    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 75,774 shares
    Change vs previous 13F +6,034 shares

    0.01% of the 13F portfolio, value $4,554,774.

    13F-HR 0001104659-26-015563 filed by BLAIR WILLIAM & CO/IL
    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 69,740 shares
    Change vs previous 13F +7,737 shares

    0.01% of the 13F portfolio, value $4,418,041.

    13F-HR 0001104659-25-109927 filed by BLAIR WILLIAM & CO/IL
    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 62,003 shares
    Change vs previous 13F -607 shares

    0.01% of the 13F portfolio, value $3,894,406.

    13F-HR 0001104659-25-070274 filed by BLAIR WILLIAM & CO/IL
    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 62,610 shares
    Change vs previous 13F +3,489 shares

    0.01% of the 13F portfolio, value $3,741,555.

    13F-HR 0001104659-25-046545 filed by BLAIR WILLIAM & CO/IL
    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 59,121 shares
    Change vs previous 13F +11,750 shares

    0.01% of the 13F portfolio, value $3,199,647.

    13F-HR 0001104659-25-011872 filed by BLAIR WILLIAM & CO/IL
    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 47,371 shares
    Change vs previous 13F not available

    0.01% of the 13F portfolio, value $2,162,485.

    13F-HR 0001104659-24-116499 filed by BLAIR WILLIAM & CO/IL
    Filed (acceptance time not in the bulk data set), ingested

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