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Disclosery

OPPENHEIMER ASSET MANAGEMENT INC.: AMSC position timeline

Available 13F reports, 13D and 13G stakes and each Form 3, 4 and 5 line of OPPENHEIMER ASSET MANAGEMENT INC. on AMSC, newest first. How the timeline and the estimate are built.

OPPENHEIMER ASSET MANAGEMENT INC. held 30,060 AMSC shares at 2026-06-30 per its 13F-HR filed 2026-08-03.

the latest 13F is the newest step

  1. period ended2026-06-30
    13F 30,060 shares
    Change vs previous 13F +4,776 shares

    0.01% of the 13F portfolio, value $1,247,791.

    13F-HR 0000822581-26-000002 filed by OPPENHEIMER & CO INC
    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 25,284 shares
    Change vs previous 13F +25,284 shares

    0.01% of the 13F portfolio, value $855,863.

    13F-HR 0000822581-26-000001 filed by OPPENHEIMER & CO INC
    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 -20,100 shares

    13F-HR 0001085146-26-000134 filed by OPPENHEIMER & CO INC
    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 20,100 shares
    Change vs previous 13F -23,495 shares

    0.01% of the 13F portfolio, value $1,193,739.

    13F-HR 0000822581-25-000003 filed by OPPENHEIMER & CO INC
    Filed (acceptance time not in the bulk data set), ingested

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

  5. period ended2025-06-30
    13F 43,595 shares
    Change vs previous 13F +33,595 shares

    0.02% of the 13F portfolio, value $1,599,501.

    13F-HR 0001085146-25-004369 filed by OPPENHEIMER & CO INC
    Filed (acceptance time not in the bulk data set), ingested

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

  6. period ended2025-03-31
    13F 10,000 shares
    Change vs previous 13F -2,500 shares

    <0.01% of the 13F portfolio, value $181,400.

    13F-HR 0001085146-25-002234 filed by OPPENHEIMER & CO INC
    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 12,500 shares
    Change vs previous 13F -300 shares

    <0.01% of the 13F portfolio, value $307,875.

    13F-HR 0001085146-25-000778 filed by OPPENHEIMER & CO INC
    Filed (acceptance time not in the bulk data set), ingested

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

  8. period ended2024-09-30
    13F 12,800 shares
    Change vs previous 13F not available

    <0.01% of the 13F portfolio, value $302,080.

    13F-HR 0001085146-24-005360 filed by OPPENHEIMER & CO INC
    Filed (acceptance time not in the bulk data set), ingested

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