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MILLENNIUM MANAGEMENT LLC: STX position timeline

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

MILLENNIUM MANAGEMENT LLC held 633,069 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 633,069 shares
    Change vs previous 13F +382,790 shares

    0.41% of the 13F portfolio, value $610,911,585.

    13F-HR 0001273087-26-000007 filed by MILLENNIUM MANAGEMENT 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 250,279 shares
    Change vs previous 13F +168,698 shares

    0.07% of the 13F portfolio, value $98,049,301.

    13F-HR 0001273087-26-000004 filed by MILLENNIUM MANAGEMENT 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 81,581 shares
    Change vs previous 13F -694,605 shares

    0.02% of the 13F portfolio, value $22,466,592.

    13F-HR 0001273087-26-000002 filed by MILLENNIUM MANAGEMENT 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 776,186 shares
    Change vs previous 13F +26,333 shares

    0.14% of the 13F portfolio, value $183,226,467.

    13F-HR 0001273087-25-000034 filed by MILLENNIUM MANAGEMENT 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 749,853 shares
    Change vs previous 13F +89,050 shares

    0.1% of the 13F portfolio, value $108,226,283.

    13F-HR 0001273087-25-000028 filed by MILLENNIUM MANAGEMENT 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 660,803 shares
    Change vs previous 13F -474,482 shares

    0.05% of the 13F portfolio, value $56,135,215.

    13F-HR 0001273087-25-000019 filed by MILLENNIUM MANAGEMENT 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 1,135,285 shares
    Change vs previous 13F +209,106 shares

    0.08% of the 13F portfolio, value $97,986,448.

    13F-HR 0001273087-25-000015 filed by MILLENNIUM MANAGEMENT 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 926,179 shares
    Change vs previous 13F not available

    0.09% of the 13F portfolio, value $101,444,386.

    13F-HR 0001273087-24-000118 filed by MILLENNIUM MANAGEMENT LLC
    Filed (acceptance time not in the bulk data set), ingested

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