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BLAIR WILLIAM & CO/IL: BAH position timeline

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

BLAIR WILLIAM & CO/IL held 72,958 BAH 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 72,958 shares
    Change vs previous 13F -10,098 shares

    0.01% of the 13F portfolio, value $4,426,342.

    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 83,056 shares
    Change vs previous 13F -16,863 shares

    0.02% of the 13F portfolio, value $6,480,898.

    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 99,919 shares
    Change vs previous 13F -5,048 shares

    0.02% of the 13F portfolio, value $8,429,164.

    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 104,967 shares
    Change vs previous 13F -1,302 shares

    0.03% of the 13F portfolio, value $10,491,482.

    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 106,269 shares
    Change vs previous 13F -106,067 shares

    0.03% of the 13F portfolio, value $11,065,759.

    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 212,336 shares
    Change vs previous 13F -300,466 shares

    0.07% of the 13F portfolio, value $22,206,090.

    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 512,802 shares
    Change vs previous 13F -187,235 shares

    0.19% of the 13F portfolio, value $65,997,644.

    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 700,037 shares
    Change vs previous 13F not available

    0.33% of the 13F portfolio, value $113,937,956.

    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).