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BLAIR WILLIAM & CO/IL: RBA position timeline

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

BLAIR WILLIAM & CO/IL held 526,577 RBA 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 526,577 shares
    Change vs previous 13F -43,810 shares

    0.16% of the 13F portfolio, value $61,319,939.

    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 570,387 shares
    Change vs previous 13F -181,492 shares

    0.16% of the 13F portfolio, value $54,671,589.

    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 751,879 shares
    Change vs previous 13F -9,452 shares

    0.21% of the 13F portfolio, value $77,345,788.

    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 761,331 shares
    Change vs previous 13F -16,948 shares

    0.22% of the 13F portfolio, value $82,497,775.

    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 778,279 shares
    Change vs previous 13F -29,154 shares

    0.23% of the 13F portfolio, value $82,645,398.

    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 807,433 shares
    Change vs previous 13F -3,968 shares

    0.24% of the 13F portfolio, value $80,985,539.

    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 811,401 shares
    Change vs previous 13F +6,445 shares

    0.21% of the 13F portfolio, value $73,196,520.

    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 804,956 shares
    Change vs previous 13F not available

    0.19% of the 13F portfolio, value $64,790,899.

    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).