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BLAIR WILLIAM & CO/IL: PWR position timeline

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

BLAIR WILLIAM & CO/IL held 224,665 PWR 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 224,665 shares
    Change vs previous 13F -1,185 shares

    0.42% of the 13F portfolio, value $161,767,861.

    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 225,850 shares
    Change vs previous 13F +145,549 shares

    0.36% of the 13F portfolio, value $123,996,141.

    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 80,301 shares
    Change vs previous 13F +40,956 shares

    0.09% of the 13F portfolio, value $33,891,706.

    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 39,345 shares
    Change vs previous 13F +2,210 shares

    0.04% of the 13F portfolio, value $16,305,163.

    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 37,135 shares
    Change vs previous 13F +1,291 shares

    0.04% of the 13F portfolio, value $14,039,854.

    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 35,844 shares
    Change vs previous 13F -487 shares

    0.03% of the 13F portfolio, value $9,110,745.

    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 36,331 shares
    Change vs previous 13F +9,859 shares

    0.03% of the 13F portfolio, value $11,482,464.

    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 26,472 shares
    Change vs previous 13F not available

    0.02% of the 13F portfolio, value $7,892,539.

    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).