BLAIR WILLIAM & CO/IL: ARCC position timeline
Available 13F reports, 13D and 13G stakes and each Form 3, 4 and 5 line of BLAIR WILLIAM & CO/IL on ARCC, newest first. How the timeline and the estimate are built.
BLAIR WILLIAM & CO/IL held 440,202 ARCC shares at 2026-06-30 per its 13F-HR filed 2026-08-11.
the latest 13F is the newest step
- period ended2026-06-3013F 440,202 sharesChange vs previous 13F +3,526 shares
0.02% of the 13F portfolio, value $8,156,946.
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 436,676 sharesChange vs previous 13F +204,209 shares
0.02% of the 13F portfolio, value $7,868,907.
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 232,467 sharesChange vs previous 13F +37,060 shares
0.01% of the 13F portfolio, value $4,702,804.
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 195,407 sharesChange vs previous 13F -1,978 shares
0.01% of the 13F portfolio, value $3,988,256.
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 197,385 sharesChange vs previous 13F -98,217 shares
0.01% of the 13F portfolio, value $4,334,573.
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 295,602 sharesChange vs previous 13F +14,897 shares
0.02% of the 13F portfolio, value $6,550,545.
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 280,705 sharesChange vs previous 13F +8,986 shares
0.02% of the 13F portfolio, value $6,144,642.
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 271,719 sharesChange vs previous 13F not available
0.02% of the 13F portfolio, value $5,689,796.
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).