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BLAIR WILLIAM & CO/IL: IWF position timeline

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

BLAIR WILLIAM & CO/IL held 973,601 IWF 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 973,601 shares
    Change vs previous 13F +707,575 shares

    0.31% of the 13F portfolio, value $120,891,993.

    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 266,026 shares
    Change vs previous 13F +3,008 shares

    0.33% of the 13F portfolio, value $113,433,670.

    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 263,018 shares
    Change vs previous 13F +12,220 shares

    0.33% of the 13F portfolio, value $124,486,336.

    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 250,798 shares
    Change vs previous 13F +1,705 shares

    0.31% of the 13F portfolio, value $117,476,203.

    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 249,093 shares
    Change vs previous 13F +28,470 shares

    0.29% of the 13F portfolio, value $105,760,086.

    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 220,623 shares
    Change vs previous 13F +4,018 shares

    0.24% of the 13F portfolio, value $79,664,609.

    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 216,605 shares
    Change vs previous 13F +15,064 shares

    0.25% of the 13F portfolio, value $86,984,123.

    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 201,541 shares
    Change vs previous 13F not available

    0.22% of the 13F portfolio, value $75,654,575.

    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).