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SIMPLEX TRADING, LLC: ATLX position timeline

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

SIMPLEX TRADING, LLC held 48,660 ATLX 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 48,660 shares
    Change vs previous 13F -65,106 shares

    <0.01% of the 13F portfolio, value $179,555.

    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 113,766 shares
    Change vs previous 13F +66,360 shares

    0.02% of the 13F portfolio, value $494,882.

    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 47,406 shares
    Change vs previous 13F +36,016 shares

    0.01% of the 13F portfolio, value $200,527.

    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 11,390 shares
    Change vs previous 13F +6,354 shares

    <0.01% of the 13F portfolio, value $54,000.

    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 5,036 shares
    Change vs previous 13F +3,088 shares

    <0.01% of the 13F portfolio, value $19,000.

    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 1,948 shares
    Change vs previous 13F +1,724 shares

    <0.01% of the 13F portfolio, value $10,000.

    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 224 shares
    Change vs previous 13F -12,549 shares

    <0.01% of the 13F portfolio, value $1,000.

    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 12,773 shares
    Change vs previous 13F not available

    <0.01% of the 13F portfolio, value $86,000.

    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).