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BLAIR WILLIAM & CO/IL: IBM position timeline

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

BLAIR WILLIAM & CO/IL held 486,008 IBM 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 486,008 shares
    Change vs previous 13F -32,449 shares

    0.36% of the 13F portfolio, value $136,670,198.

    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 518,457 shares
    Change vs previous 13F +47,010 shares

    0.36% of the 13F portfolio, value $125,668,840.

    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 471,447 shares
    Change vs previous 13F +11,707 shares

    0.37% of the 13F portfolio, value $139,647,277.

    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 459,740 shares
    Change vs previous 13F -15,883 shares

    0.35% of the 13F portfolio, value $129,720,309.

    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 475,623 shares
    Change vs previous 13F +14,771 shares

    0.39% of the 13F portfolio, value $140,204,015.

    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 460,852 shares
    Change vs previous 13F -1,901 shares

    0.35% of the 13F portfolio, value $114,595,422.

    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 462,753 shares
    Change vs previous 13F +2,129 shares

    0.3% of the 13F portfolio, value $101,726,963.

    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 460,624 shares
    Change vs previous 13F not available

    0.3% of the 13F portfolio, value $101,834,815.

    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).