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Disclosery

BlackRock, Inc.: BLDR position timeline

Available 13F reports, 13D and 13G stakes and each Form 3, 4 and 5 line of BlackRock, Inc. on BLDR, newest first. How the timeline and the estimate are built.

BlackRock, Inc. held 7,833,417 BLDR shares at 2026-06-30 per its 13F-HR filed 2026-08-07, and reported 12,897,766 shares, 12%, in a 13G/A filed 2026-10-05.

Estimated current stake: 12,897,766 shares, 12% of the class

Estimated from 13G/A of 2026-10-05. As of 2026-09-30, 13G/A 0002012383-26-003316.

Shares are the reporting group's aggregate and may include entities that do not file a 13F.

Percent of portfolio stays on the 13F for 2026-06-30.

  1. event date2026-09-30
    13G/A 12,897,766 shares
    Share basis changed not comparable

    12% of the class. Different basis (group aggregate from 13G/A).

    13G/A 0002012383-26-003316 filed by BlackRock, Inc.
    Accepted , ingested

    A 13D/G states the aggregate of its reporting persons, which may include entities that do not file a 13F.

  2. period ended2026-06-30
    13F 7,833,417 shares
    Change vs previous 13F -927,860 shares

    0.01% of the 13F portfolio, value $700,934,166.

    13F-HR 0002012383-26-003238 filed by BlackRock, Inc.
    Filed (acceptance time not in the bulk data set), ingested

    Acceptance time not in the bulk data set (spec §4.2).

  3. period ended2026-03-31
    13F 8,761,277 shares
    Change vs previous 13F -115,136 shares

    0.01% of the 13F portfolio, value $721,315,954.

    13F-HR 0002012383-26-001841 filed by BlackRock, Inc.
    Filed (acceptance time not in the bulk data set), ingested

    Acceptance time not in the bulk data set (spec §4.2).

  4. period ended2025-12-31
    13F 8,876,413 shares
    Change vs previous 13F +168,542 shares

    0.02% of the 13F portfolio, value $913,294,102.

    13F-HR 0002012383-26-000920 filed by BlackRock, Inc.
    Filed (acceptance time not in the bulk data set), ingested

    Acceptance time not in the bulk data set (spec §4.2).

  5. period ended2025-09-30
    13F 8,707,871 shares
    Change vs previous 13F +69,269 shares

    0.02% of the 13F portfolio, value $1,055,829,370.

    13F-HR 0002012383-25-002949 filed by BlackRock, Inc.
    Filed (acceptance time not in the bulk data set), ingested

    Acceptance time not in the bulk data set (spec §4.2).

  6. period ended2025-06-30
    13F 8,638,602 shares
    Change vs previous 13F -985,105 shares

    0.02% of the 13F portfolio, value $1,008,038,474.

    13F-HR 0001060021-25-000120 filed by BlackRock, Inc.
    Filed (acceptance time not in the bulk data set), ingested

    Acceptance time not in the bulk data set (spec §4.2).

  7. period ended2025-03-31
    13F 9,623,707 shares
    Change vs previous 13F -158,149 shares

    0.03% of the 13F portfolio, value $1,202,385,909.

    13F-HR 0001576419-25-000869 filed by BlackRock, Inc.
    Filed (acceptance time not in the bulk data set), ingested

    Acceptance time not in the bulk data set (spec §4.2).

  8. period ended2024-12-31
    13F 9,781,856 shares
    Change vs previous 13F -200,389 shares

    0.03% of the 13F portfolio, value $1,398,120,720.

    13F-HR 0001060021-25-000002 filed by BlackRock, Inc.
    Filed (acceptance time not in the bulk data set), ingested

    Acceptance time not in the bulk data set (spec §4.2).

  9. period ended2024-09-30
    13F 9,982,245 shares
    Change vs previous 13F not available

    0.04% of the 13F portfolio, value $1,935,158,007.

    13F-HR 0001426459-24-000006 filed by BlackRock, Inc.
    Filed (acceptance time not in the bulk data set), ingested

    Acceptance time not in the bulk data set (spec §4.2).