BLAIR WILLIAM & CO/IL: BX position timeline
Available 13F reports, 13D and 13G stakes and each Form 3, 4 and 5 line of BLAIR WILLIAM & CO/IL on BX, newest first. How the timeline and the estimate are built.
BLAIR WILLIAM & CO/IL held 1,011,005 BX shares at 2026-06-30 per its 13F-HR filed 2026-08-11.
the latest 13F is the newest step
- period ended2026-06-3013F 1,011,005 sharesChange vs previous 13F -167,607 shares
0.31% of the 13F portfolio, value $118,964,911.
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 1,178,612 sharesChange vs previous 13F -190,433 shares
0.39% of the 13F portfolio, value $135,528,580.
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 1,369,045 sharesChange vs previous 13F +7,396 shares
0.57% of the 13F portfolio, value $211,024,621.
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 1,361,649 sharesChange vs previous 13F +5,717 shares
0.62% of the 13F portfolio, value $232,637,716.
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 1,355,932 sharesChange vs previous 13F +10,013 shares
0.56% of the 13F portfolio, value $202,820,245.
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 1,345,919 sharesChange vs previous 13F -6,516 shares
0.57% of the 13F portfolio, value $188,132,606.
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 1,352,435 sharesChange vs previous 13F +17,828 shares
0.68% of the 13F portfolio, value $233,186,798.
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 1,334,607 sharesChange vs previous 13F not available
0.6% of the 13F portfolio, value $204,368,347.
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).