Skip to content

BLAIR WILLIAM & CO/IL: ACN position timeline

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

BLAIR WILLIAM & CO/IL held 224,741 ACN 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 224,741 shares
    Change vs previous 13F -101,332 shares

    0.07% of the 13F portfolio, value $27,966,788.

    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 326,073 shares
    Change vs previous 13F -76,126 shares

    0.19% of the 13F portfolio, value $64,656,948.

    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 402,199 shares
    Change vs previous 13F -45,420 shares

    0.29% of the 13F portfolio, value $107,909,945.

    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 447,619 shares
    Change vs previous 13F -139,951 shares

    0.29% of the 13F portfolio, value $110,382,946.

    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 587,570 shares
    Change vs previous 13F -133,923 shares

    0.49% of the 13F portfolio, value $175,618,932.

    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 721,493 shares
    Change vs previous 13F -10,382 shares

    0.68% of the 13F portfolio, value $225,134,756.

    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 731,875 shares
    Change vs previous 13F +87,785 shares

    0.75% of the 13F portfolio, value $257,466,461.

    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 644,090 shares
    Change vs previous 13F not available

    0.67% of the 13F portfolio, value $227,672,910.

    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).