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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

  1. period ended2026-06-30
    13F 440,202 shares
    Change 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), ingested

    Acceptance time not in the bulk data set (spec §4.2).

  2. period ended2026-03-31
    13F 436,676 shares
    Change 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), ingested

    Acceptance time not in the bulk data set (spec §4.2).

  3. period ended2025-12-31
    13F 232,467 shares
    Change 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), ingested

    Acceptance time not in the bulk data set (spec §4.2).

  4. period ended2025-09-30
    13F 195,407 shares
    Change 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), ingested

    Acceptance time not in the bulk data set (spec §4.2).

  5. period ended2025-06-30
    13F 197,385 shares
    Change 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), ingested

    Acceptance time not in the bulk data set (spec §4.2).

  6. period ended2025-03-31
    13F 295,602 shares
    Change 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), ingested

    Acceptance time not in the bulk data set (spec §4.2).

  7. period ended2024-12-31
    13F 280,705 shares
    Change 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), ingested

    Acceptance time not in the bulk data set (spec §4.2).

  8. period ended2024-09-30
    13F 271,719 shares
    Change 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), ingested

    Acceptance time not in the bulk data set (spec §4.2).