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Disclosery

Duquesne Family Office LLC: STX position timeline

Available 13F reports, 13D and 13G stakes and each Form 3, 4 and 5 line of Duquesne Family Office LLC on STX, newest first. How the timeline and the estimate are built.

Duquesne Family Office LLC held 122,000 STX 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 122,000 shares
    Change vs previous 13F +71,300 shares

    2.7% of the 13F portfolio, value $117,730,000.

    13F-HR 0001536411-26-000006 filed by Duquesne Family Office 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 50,700 shares
    Change vs previous 13F +50,700 shares

    0.68% of the 13F portfolio, value $19,862,000.

    13F-HR 0001536411-26-000004 filed by Duquesne Family Office 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 0 shares
    Change vs previous 13F -85,900 shares

    13F-HR 0001536411-26-000002 filed by Duquesne Family Office LLC
    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 85,900 shares
    Change vs previous 13F -111,590 shares

    0.52% of the 13F portfolio, value $20,278,000.

    13F-HR 0001536411-25-000017 filed by Duquesne Family Office 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 197,490 shares
    Change vs previous 13F -21,987 shares

    0.73% of the 13F portfolio, value $28,504,000.

    13F-HR 0001536411-25-000011 filed by Duquesne Family Office 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 219,477 shares
    Change vs previous 13F -1,344,599 shares

    0.63% of the 13F portfolio, value $18,645,000.

    13F-HR 0001536411-25-000008 filed by Duquesne Family Office 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 1,564,076 shares
    Change vs previous 13F -76,293 shares

    3.8% of the 13F portfolio, value $134,995,000.

    13F-HR 0001536411-25-000006 filed by Duquesne Family Office 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 1,640,369 shares
    Change vs previous 13F not available

    6.3% of the 13F portfolio, value $179,670,000.

    13F-HR 0001536411-24-000009 filed by Duquesne Family Office LLC
    Filed (acceptance time not in the bulk data set), ingested

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