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BLAIR WILLIAM & CO/IL: SPSC position timeline

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

BLAIR WILLIAM & CO/IL held 0 SPSC shares at 2026-03-31 per its 13F-HR filed 2026-05-08.

the latest 13F is the newest step

  1. period ended2026-03-31
    13F 0 shares
    Change vs previous 13F -4,013 shares

    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).

    Exited: the 13F for this period no longer lists the position.

  2. period ended2025-12-31
    13F 4,013 shares
    Change vs previous 13F -6,752 shares

    <0.01% of the 13F portfolio, value $357,679.

    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).

  3. period ended2025-09-30
    13F 10,765 shares
    Change vs previous 13F +2,492 shares

    <0.01% of the 13F portfolio, value $1,121,067.

    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).

  4. period ended2025-06-30
    13F 8,273 shares
    Change vs previous 13F +206 shares

    <0.01% of the 13F portfolio, value $1,125,873.

    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).

  5. period ended2025-03-31
    13F 8,067 shares
    Change vs previous 13F +4,858 shares

    <0.01% of the 13F portfolio, value $1,070,733.

    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).

  6. period ended2024-12-31
    13F 3,209 shares
    Change vs previous 13F -15 shares

    <0.01% of the 13F portfolio, value $590,424.

    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).

  7. period ended2024-09-30
    13F 3,224 shares
    Change vs previous 13F not available

    <0.01% of the 13F portfolio, value $626,004.

    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).