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OPPENHEIMER ASSET MANAGEMENT INC.: MARA position timeline

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

OPPENHEIMER ASSET MANAGEMENT INC. held 24,096 MARA 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 24,096 shares
    Change vs previous 13F -1,619 shares

    <0.01% of the 13F portfolio, value $334,693.

    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 25,715 shares
    Change vs previous 13F -4,823 shares

    <0.01% of the 13F portfolio, value $209,834.

    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 30,538 shares
    Change vs previous 13F -33,899 shares

    <0.01% of the 13F portfolio, value $274,231.

    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).

  4. period ended2025-09-30
    13F 64,437 shares
    Change vs previous 13F -1,212 shares

    0.01% of the 13F portfolio, value $1,176,620.

    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 65,649 shares
    Change vs previous 13F -1,294 shares

    0.01% of the 13F portfolio, value $1,029,376.

    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 66,943 shares
    Change vs previous 13F -30,622 shares

    0.01% of the 13F portfolio, value $769,845.

    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 97,565 shares
    Change vs previous 13F not available

    0.02% of the 13F portfolio, value $1,636,165.

    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).