BLAIR WILLIAM & CO/IL: CMCSA position timeline
Available 13F reports, 13D and 13G stakes and each Form 3, 4 and 5 line of BLAIR WILLIAM & CO/IL on CMCSA, newest first. How the timeline and the estimate are built.
BLAIR WILLIAM & CO/IL held 108,223 CMCSA shares at 2026-06-30 per its 13F-HR filed 2026-08-11.
the latest 13F is the newest step
- period ended2026-06-3013F 108,223 sharesChange vs previous 13F -24,880 shares
0.01% of the 13F portfolio, value $2,656,883.
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 133,103 sharesChange vs previous 13F -16,726 shares
0.01% of the 13F portfolio, value $3,821,381.
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 149,829 sharesChange vs previous 13F -55,374 shares
0.01% of the 13F portfolio, value $4,478,392.
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 205,203 sharesChange vs previous 13F -32,714 shares
0.02% of the 13F portfolio, value $6,447,488.
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 237,917 sharesChange vs previous 13F -26,536 shares
0.02% of the 13F portfolio, value $8,491,258.
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 264,453 sharesChange vs previous 13F -85,530 shares
0.03% of the 13F portfolio, value $9,758,310.
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 349,983 sharesChange vs previous 13F -22,595 shares
0.04% of the 13F portfolio, value $13,134,865.
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 372,578 sharesChange vs previous 13F not available
0.05% of the 13F portfolio, value $15,562,584.
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).