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Disclosery

PEAK6 LLC: STX position timeline

Available 13F reports, 13D and 13G stakes and each Form 3, 4 and 5 line of PEAK6 LLC on STX, newest first. How the timeline and the estimate are built.

PEAK6 LLC held 20,194 STX shares at 2026-06-30 per its 13F-HR filed 2026-08-13.

the latest 13F is the newest step

  1. period ended2026-06-30
    13F 20,194 shares
    Change vs previous 13F -25,334 shares

    0.47% of the 13F portfolio, value $19,486,907.

    13F-HR 0001389958-26-000014 filed by PEAK6 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 45,528 shares
    Change vs previous 13F -994 shares

    0.52% of the 13F portfolio, value $17,836,186.

    13F-HR 0001389958-26-000013 filed by PEAK6 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/A 46,522 shares
    Change vs previous 13F +46,519 shares

    0.35% of the 13F portfolio, value $12,811,694.

    13F-HR/A 0001389958-26-000008 filed by PEAK6 LLC
    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/A 3 shares
    Change vs previous 13F +3 shares

    <0.01% of the 13F portfolio, value $638.

    13F-HR/A 0001389958-26-000011 filed by PEAK6 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/A 0 shares
    Change vs previous 13F -14,030 shares

    13F-HR/A 0001389958-26-000010 filed by PEAK6 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.

  6. period ended2025-03-31
    13F 14,030 shares
    Change vs previous 13F not available

    0.05% of the 13F portfolio, value $1,191,848.

    13F-HR 0001389958-25-000011 filed by PEAK6 LLC
    Filed (acceptance time not in the bulk data set), ingested

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