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SIMPLEX TRADING, LLC: ARDX position timeline

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

SIMPLEX TRADING, LLC held 151,427 ARDX 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 151,427 shares
    Change vs previous 13F -23,434 shares

    0.02% of the 13F portfolio, value $772,277.

    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 174,861 shares
    Change vs previous 13F +22,927 shares

    0.03% of the 13F portfolio, value $1,047,417.

    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 151,934 shares
    Change vs previous 13F -57,299 shares

    0.02% of the 13F portfolio, value $885,775.

    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 209,233 shares
    Change vs previous 13F +79,552 shares

    0.03% of the 13F portfolio, value $1,152,000.

    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 129,681 shares
    Change vs previous 13F -213,693 shares

    0.01% of the 13F portfolio, value $508,000.

    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 343,374 shares
    Change vs previous 13F +173,511 shares

    0.06% of the 13F portfolio, value $1,685,000.

    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 169,863 shares
    Change vs previous 13F -70,336 shares

    0.02% of the 13F portfolio, value $861,000.

    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 240,199 shares
    Change vs previous 13F not available

    0.06% of the 13F portfolio, value $1,654,000.

    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).