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DUFF & PHELPS INVESTMENT MANAGEMENT CO: ACM position timeline

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

DUFF & PHELPS INVESTMENT MANAGEMENT CO held 7 ACM shares at 2026-06-30 per its 13F-HR/A filed 2026-08-13.

the latest 13F is the newest step

  1. period ended2026-06-30
    13F/A 7 shares
    Change vs previous 13F 0 shares

    <0.01% of the 13F portfolio, value $489.

    13F-HR/A 0001140361-26-032766 filed by DUFF & PHELPS INVESTMENT MANAGEMENT CO
    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/A 7 shares
    Change vs previous 13F +7 shares

    <0.01% of the 13F portfolio, value $594.

    13F-HR/A 0001140361-26-029563 filed by DUFF & PHELPS INVESTMENT MANAGEMENT CO
    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 0 shares
    Change vs previous 13F -105,506 shares

    13F-HR 0001140361-26-002362 filed by DUFF & PHELPS INVESTMENT MANAGEMENT CO
    Filed (acceptance time not in the bulk data set), ingested

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

    Exited: the 13F for this period no longer lists the position.

  4. period ended2025-09-30
    13F 105,506 shares
    Change vs previous 13F -12,608 shares

    0.16% of the 13F portfolio, value $13,765,368.

    13F-HR 0001140361-25-041885 filed by DUFF & PHELPS INVESTMENT MANAGEMENT CO
    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 118,114 shares
    Change vs previous 13F +33,304 shares

    0.16% of the 13F portfolio, value $13,330,346.

    13F-HR 0001140361-25-030078 filed by DUFF & PHELPS INVESTMENT MANAGEMENT CO
    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 84,810 shares
    Change vs previous 13F -11,840 shares

    0.09% of the 13F portfolio, value $7,864,431.

    13F-HR 0001140361-25-018540 filed by DUFF & PHELPS INVESTMENT MANAGEMENT CO
    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 96,650 shares
    Change vs previous 13F -2,478 shares

    0.12% of the 13F portfolio, value $10,324,153.

    13F-HR 0001140361-25-003945 filed by DUFF & PHELPS INVESTMENT MANAGEMENT CO
    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 99,128 shares
    Change vs previous 13F not available

    0.12% of the 13F portfolio, value $10,236,949.

    13F-HR 0001140361-24-047052 filed by DUFF & PHELPS INVESTMENT MANAGEMENT CO
    Filed (acceptance time not in the bulk data set), ingested

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