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MILLENNIUM MANAGEMENT LLC: ACM position timeline

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

MILLENNIUM MANAGEMENT LLC held 1,321,296 ACM 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 1,321,296 shares
    Change vs previous 13F +537,268 shares

    0.06% of the 13F portfolio, value $92,226,461.

    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 784,028 shares
    Change vs previous 13F +405,505 shares

    0.05% of the 13F portfolio, value $66,501,255.

    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 378,523 shares
    Change vs previous 13F +345,012 shares

    0.03% of the 13F portfolio, value $36,084,598.

    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 33,511 shares
    Change vs previous 13F -306,897 shares

    <0.01% of the 13F portfolio, value $4,372,180.

    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 340,408 shares
    Change vs previous 13F +255,958 shares

    0.03% of the 13F portfolio, value $38,418,447.

    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 84,450 shares
    Change vs previous 13F -145,433 shares

    0.01% of the 13F portfolio, value $7,831,049.

    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).

  7. period ended2024-12-31
    13F 229,883 shares
    Change vs previous 13F -389,109 shares

    0.02% of the 13F portfolio, value $24,556,102.

    13F-HR 0001273087-25-000015 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).

  8. period ended2024-09-30
    13F 618,992 shares
    Change vs previous 13F not available

    0.06% of the 13F portfolio, value $63,923,304.

    13F-HR 0001273087-24-000118 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).