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ALLIANCEBERNSTEIN L.P.: ACM position timeline

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

ALLIANCEBERNSTEIN L.P. held 556,862 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 556,862 shares
    Change vs previous 13F -1,363 shares

    0.02% of the 13F portfolio, value $47,233,035.

    13F-HR 0001109448-26-000261 filed by ALLIANCEBERNSTEIN L.P.
    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 558,225 shares
    Change vs previous 13F -958,419 shares

    0.02% of the 13F portfolio, value $53,215,589.

    13F-HR 0001109448-26-000101 filed by ALLIANCEBERNSTEIN L.P.
    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 1,516,644 shares
    Change vs previous 13F -1,090,671 shares

    0.05% of the 13F portfolio, value $144,581,673.

    13F-HR 0001109448-26-000021 filed by ALLIANCEBERNSTEIN L.P.
    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 2,607,315 shares
    Change vs previous 13F -188,720 shares

    0.11% of the 13F portfolio, value $340,176,388.

    13F-HR 0001109448-25-000079 filed by ALLIANCEBERNSTEIN L.P.
    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 2,796,035 shares
    Change vs previous 13F -225,898 shares

    0.1% of the 13F portfolio, value $315,560,510.

    13F-HR 0001532155-25-000161 filed by ALLIANCEBERNSTEIN L.P.
    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 3,021,933 shares
    Change vs previous 13F -696,438 shares

    0.1% of the 13F portfolio, value $280,223,847.

    13F-HR 0001532155-25-000116 filed by ALLIANCEBERNSTEIN L.P.
    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 3,718,371 shares
    Change vs previous 13F +373,991 shares

    0.13% of the 13F portfolio, value $397,196,390.

    13F-HR 0001532155-25-000050 filed by ALLIANCEBERNSTEIN L.P.
    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 3,344,380 shares
    Change vs previous 13F not available

    0.12% of the 13F portfolio, value $345,374,123.

    13F-HR 0001532155-24-000162 filed by ALLIANCEBERNSTEIN L.P.
    Filed (acceptance time not in the bulk data set), ingested

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