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
- period ended2026-06-3013F 3,442,574 sharesChange 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), ingestedAcceptance time not in the bulk data set (spec §4.2).
- period ended2026-03-3113F 3,498,110 sharesChange 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), ingestedAcceptance time not in the bulk data set (spec §4.2).
- period ended2025-12-3113F 3,574,568 sharesChange 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), ingestedAcceptance time not in the bulk data set (spec §4.2).
- period ended2025-09-3013F 3,607,106 sharesChange 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), ingestedAcceptance time not in the bulk data set (spec §4.2).
- period ended2025-06-3013F 3,696,704 sharesChange 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), ingestedAcceptance time not in the bulk data set (spec §4.2).
- period ended2025-03-3113F 3,766,202 sharesChange 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), ingestedAcceptance time not in the bulk data set (spec §4.2).
- period ended2024-12-3113F 3,811,770 sharesChange 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), ingestedAcceptance time not in the bulk data set (spec §4.2).
- period ended2024-09-3013F 3,768,737 sharesChange 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), ingestedAcceptance time not in the bulk data set (spec §4.2).