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BLAIR WILLIAM & CO/IL: IBB position timeline

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

BLAIR WILLIAM & CO/IL held 16,849 IBB 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 16,849 shares
    Change vs previous 13F +2,072 shares

    0.01% of the 13F portfolio, value $3,204,492.

    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 14,777 shares
    Change vs previous 13F +3,101 shares

    0.01% of the 13F portfolio, value $2,495,027.

    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 11,676 shares
    Change vs previous 13F -166 shares

    0.01% of the 13F portfolio, value $1,970,571.

    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 11,842 shares
    Change vs previous 13F -2,440 shares

    <0.01% of the 13F portfolio, value $1,709,562.

    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 14,282 shares
    Change vs previous 13F -8,799 shares

    0.01% of the 13F portfolio, value $1,806,781.

    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 23,081 shares
    Change vs previous 13F -686 shares

    0.01% of the 13F portfolio, value $2,952,024.

    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 23,767 shares
    Change vs previous 13F -40,132 shares

    0.01% of the 13F portfolio, value $3,142,260.

    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 63,899 shares
    Change vs previous 13F not available

    0.03% of the 13F portfolio, value $9,303,744.

    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).