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BLAIR WILLIAM & CO/IL: IWM position timeline

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

BLAIR WILLIAM & CO/IL held 701,051 IWM 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 701,051 shares
    Change vs previous 13F +72,823 shares

    0.55% of the 13F portfolio, value $210,630,787.

    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 628,228 shares
    Change vs previous 13F +69,490 shares

    0.45% of the 13F portfolio, value $155,800,632.

    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 558,738 shares
    Change vs previous 13F +58,277 shares

    0.37% of the 13F portfolio, value $137,538,904.

    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 500,461 shares
    Change vs previous 13F +6,881 shares

    0.32% of the 13F portfolio, value $121,091,426.

    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 493,580 shares
    Change vs previous 13F -24,873 shares

    0.3% of the 13F portfolio, value $106,509,632.

    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 518,453 shares
    Change vs previous 13F -11,355 shares

    0.31% of the 13F portfolio, value $103,426,237.

    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 529,808 shares
    Change vs previous 13F +35,522 shares

    0.34% of the 13F portfolio, value $117,066,402.

    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 494,286 shares
    Change vs previous 13F not available

    0.32% of the 13F portfolio, value $109,182,804.

    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).