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BLAIR WILLIAM & CO/IL: RSP position timeline

Available 13F reports, 13D and 13G stakes and each Form 3, 4 and 5 line of BLAIR WILLIAM & CO/IL on RSP, newest first. How the timeline and the estimate are built.

BLAIR WILLIAM & CO/IL held 1,982,392 RSP 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 1,982,392 shares
    Change vs previous 13F +301,788 shares

    1.1% of the 13F portfolio, value $421,793,485.

    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 1,680,604 shares
    Change vs previous 13F +1,130,618 shares

    0.92% of the 13F portfolio, value $322,541,611.

    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 549,986 shares
    Change vs previous 13F +139,587 shares

    0.28% of the 13F portfolio, value $105,355,332.

    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 410,399 shares
    Change vs previous 13F +22,529 shares

    0.21% of the 13F portfolio, value $77,852,644.

    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 387,870 shares
    Change vs previous 13F +5,078 shares

    0.2% of the 13F portfolio, value $70,491,531.

    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 382,792 shares
    Change vs previous 13F +15,700 shares

    0.2% of the 13F portfolio, value $66,311,032.

    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 367,092 shares
    Change vs previous 13F +96,323 shares

    0.19% of the 13F portfolio, value $64,325,491.

    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 270,769 shares
    Change vs previous 13F not available

    0.14% of the 13F portfolio, value $48,510,997.

    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).