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BLAIR WILLIAM & CO/IL: MSFT position timeline

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

BLAIR WILLIAM & CO/IL held 3,442,574 MSFT 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 3,442,574 shares
    Change vs previous 13F -55,536 shares

    3.35% of the 13F portfolio, value $1,284,149,026.

    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 3,498,110 shares
    Change vs previous 13F -76,458 shares

    3.71% of the 13F portfolio, value $1,294,895,307.

    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 3,574,568 shares
    Change vs previous 13F -32,538 shares

    4.64% of the 13F portfolio, value $1,728,732,448.

    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 3,607,106 shares
    Change vs previous 13F -89,598 shares

    4.97% of the 13F portfolio, value $1,868,300,574.

    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 3,696,704 shares
    Change vs previous 13F -69,498 shares

    5.11% of the 13F portfolio, value $1,838,777,771.

    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 3,766,202 shares
    Change vs previous 13F -45,568 shares

    4.26% of the 13F portfolio, value $1,413,794,402.

    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 3,811,770 shares
    Change vs previous 13F +43,033 shares

    4.67% of the 13F portfolio, value $1,606,661,171.

    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 3,768,737 shares
    Change vs previous 13F not available

    4.76% of the 13F portfolio, value $1,621,687,331.

    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).