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MILLENNIUM MANAGEMENT LLC: BLK position timeline

Available 13F reports, 13D and 13G stakes and each Form 3, 4 and 5 line of MILLENNIUM MANAGEMENT LLC on BLK, newest first. How the timeline and the estimate are built.

MILLENNIUM MANAGEMENT LLC held 495,262 BLK shares at 2026-06-30 per its 13F-HR filed 2026-08-14.

the latest 13F is the newest step

  1. period ended2026-06-30
    13F 495,262 shares
    Change vs previous 13F -146,296 shares

    0.32% of the 13F portfolio, value $476,224,129.

    13F-HR 0001273087-26-000007 filed by MILLENNIUM MANAGEMENT LLC
    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 641,558 shares
    Change vs previous 13F +133,438 shares

    0.46% of the 13F portfolio, value $616,992,744.

    13F-HR 0001273087-26-000004 filed by MILLENNIUM MANAGEMENT LLC
    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 508,120 shares
    Change vs previous 13F +154,198 shares

    0.39% of the 13F portfolio, value $543,861,161.

    13F-HR 0001273087-26-000002 filed by MILLENNIUM MANAGEMENT LLC
    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 353,922 shares
    Change vs previous 13F +328,767 shares

    0.32% of the 13F portfolio, value $412,627,042.

    13F-HR 0001273087-25-000034 filed by MILLENNIUM MANAGEMENT LLC
    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 25,155 shares
    Change vs previous 13F -202,239 shares

    0.02% of the 13F portfolio, value $26,393,884.

    13F-HR 0001273087-25-000028 filed by MILLENNIUM MANAGEMENT LLC
    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 227,394 shares
    Change vs previous 13F not available

    0.21% of the 13F portfolio, value $215,223,873.

    13F-HR 0001273087-25-000019 filed by MILLENNIUM MANAGEMENT LLC
    Filed (acceptance time not in the bulk data set), ingested

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