BLAIR WILLIAM & CO/IL: MU position timeline
Available 13F reports, 13D and 13G stakes and each Form 3, 4 and 5 line of BLAIR WILLIAM & CO/IL on MU, newest first. How the timeline and the estimate are built.
BLAIR WILLIAM & CO/IL held 315,878 MU shares at 2026-06-30 per its 13F-HR filed 2026-08-11.
the latest 13F is the newest step
- period ended2026-06-3013F 315,878 sharesChange vs previous 13F -16,433 shares
0.95% of the 13F portfolio, value $364,615,192.
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 332,311 sharesChange vs previous 13F +32,341 shares
0.32% of the 13F portfolio, value $112,268,109.
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 299,970 sharesChange vs previous 13F +78 shares
0.23% of the 13F portfolio, value $85,614,432.
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 299,892 sharesChange vs previous 13F +5,934 shares
0.13% of the 13F portfolio, value $50,177,848.
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 293,958 sharesChange vs previous 13F -13,192 shares
0.1% of the 13F portfolio, value $36,230,297.
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 307,150 sharesChange vs previous 13F +6,829 shares
0.08% of the 13F portfolio, value $26,688,282.
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 300,321 sharesChange vs previous 13F -2,564 shares
0.07% of the 13F portfolio, value $25,275,033.
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 302,885 sharesChange vs previous 13F not available
0.09% of the 13F portfolio, value $31,412,225.
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).