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SIMPLEX TRADING, LLC: AMD position timeline

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

SIMPLEX TRADING, LLC held 36,092 AMD shares at 2026-06-30 per its 13F-HR filed 2026-08-12.

the latest 13F is the newest step

  1. period ended2026-06-30
    13F 36,092 shares
    Change vs previous 13F -224,530 shares

    0.55% of the 13F portfolio, value $20,966,203.

    13F-HR 0001488542-26-000011 filed by SIMPLEX TRADING, 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 260,622 shares
    Change vs previous 13F +204,147 shares

    1.64% of the 13F portfolio, value $53,018,333.

    13F-HR 0001488542-26-000009 filed by SIMPLEX TRADING, 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 56,475 shares
    Change vs previous 13F +46,200 shares

    0.34% of the 13F portfolio, value $12,094,686.

    13F-HR 0001488542-26-000002 filed by SIMPLEX TRADING, 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 10,275 shares
    Change vs previous 13F -331,733 shares

    0.04% of the 13F portfolio, value $1,662,000.

    13F-HR 0001488542-25-000018 filed by SIMPLEX TRADING, 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 342,008 shares
    Change vs previous 13F +342,008 shares

    1.31% of the 13F portfolio, value $48,530,000.

    13F-HR 0001488542-25-000010 filed by SIMPLEX TRADING, 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 0 shares
    Change vs previous 13F -398,387 shares

    13F-HR 0001488542-25-000007 filed by SIMPLEX TRADING, 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.

  7. period ended2024-12-31
    13F 398,387 shares
    Change vs previous 13F +159,630 shares

    1.36% of the 13F portfolio, value $48,121,000.

    13F-HR 0001488542-25-000001 filed by SIMPLEX TRADING, 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 238,757 shares
    Change vs previous 13F not available

    1.32% of the 13F portfolio, value $39,175,000.

    13F-HR 0001488542-24-000015 filed by SIMPLEX TRADING, LLC
    Filed (acceptance time not in the bulk data set), ingested

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