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Disclosery

BLAIR WILLIAM & CO/IL: WDC position timeline

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

BLAIR WILLIAM & CO/IL held 22,023 WDC 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 22,023 shares
    Change vs previous 13F -468 shares

    0.04% of the 13F portfolio, value $14,066,627.

    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 22,491 shares
    Change vs previous 13F +3,572 shares

    0.02% of the 13F portfolio, value $6,083,603.

    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 18,919 shares
    Change vs previous 13F -218 shares

    0.01% of the 13F portfolio, value $3,259,171.

    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 19,137 shares
    Change vs previous 13F -265 shares

    0.01% of the 13F portfolio, value $2,297,577.

    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 19,402 shares
    Change vs previous 13F -121 shares

    <0.01% of the 13F portfolio, value $1,241,533.

    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 19,523 shares
    Change vs previous 13F +399 shares

    <0.01% of the 13F portfolio, value $789,315.

    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 19,124 shares
    Change vs previous 13F +236 shares

    <0.01% of the 13F portfolio, value $1,140,364.

    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 18,888 shares
    Change vs previous 13F not available

    <0.01% of the 13F portfolio, value $1,289,862.

    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).