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BLAIR WILLIAM & CO/IL: BCPC position timeline

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

BLAIR WILLIAM & CO/IL held 197,933 BCPC 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 197,933 shares
    Change vs previous 13F -5,586 shares

    0.09% of the 13F portfolio, value $33,440,780.

    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 203,519 shares
    Change vs previous 13F +163,473 shares

    0.1% of the 13F portfolio, value $34,492,400.

    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 40,046 shares
    Change vs previous 13F +37,137 shares

    0.02% of the 13F portfolio, value $6,141,455.

    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 2,909 shares
    Change vs previous 13F +5 shares

    <0.01% of the 13F portfolio, value $436,525.

    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 2,904 shares
    Change vs previous 13F -39 shares

    <0.01% of the 13F portfolio, value $462,317.

    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 2,943 shares
    Change vs previous 13F not available

    <0.01% of the 13F portfolio, value $488,554.

    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).