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SIMPLEX TRADING, LLC: ET position timeline

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

SIMPLEX TRADING, LLC held 277,185 ET 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 277,185 shares
    Change vs previous 13F -117,048 shares

    0.14% of the 13F portfolio, value $5,299,777.

    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 394,233 shares
    Change vs previous 13F -338,231 shares

    0.24% of the 13F portfolio, value $7,608,696.

    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 732,464 shares
    Change vs previous 13F +402,579 shares

    0.34% of the 13F portfolio, value $12,078,331.

    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 329,885 shares
    Change vs previous 13F -721,755 shares

    0.12% of the 13F portfolio, value $5,660,000.

    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 1,051,640 shares
    Change vs previous 13F -4,128 shares

    0.51% of the 13F portfolio, value $19,066,000.

    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 1,055,768 shares
    Change vs previous 13F -122,901 shares

    0.7% of the 13F portfolio, value $19,626,000.

    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).

  7. period ended2024-12-31
    13F 1,178,669 shares
    Change vs previous 13F +617,987 shares

    0.65% of the 13F portfolio, value $23,090,000.

    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 560,682 shares
    Change vs previous 13F not available

    0.3% of the 13F portfolio, value $8,998,000.

    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).