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BLAIR WILLIAM & CO/IL: FAST position timeline

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

BLAIR WILLIAM & CO/IL held 7,407,059 FAST 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 7,407,059 shares
    Change vs previous 13F +33,352 shares

    0.93% of the 13F portfolio, value $355,761,040.

    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 7,373,707 shares
    Change vs previous 13F +359,041 shares

    0.98% of the 13F portfolio, value $342,140,020.

    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 7,014,666 shares
    Change vs previous 13F +49,102 shares

    0.76% of the 13F portfolio, value $281,498,564.

    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 6,965,564 shares
    Change vs previous 13F +142,591 shares

    0.91% of the 13F portfolio, value $341,591,280.

    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 6,822,973 shares
    Change vs previous 13F +3,530,339 shares

    0.8% of the 13F portfolio, value $286,564,877.

    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 3,292,634 shares
    Change vs previous 13F +35,867 shares

    0.77% of the 13F portfolio, value $255,343,744.

    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 3,256,767 shares
    Change vs previous 13F -17,809 shares

    0.68% of the 13F portfolio, value $234,194,113.

    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 3,274,576 shares
    Change vs previous 13F not available

    0.69% of the 13F portfolio, value $233,870,230.

    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).