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SIMPLEX TRADING, LLC: MSOS position timeline

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

SIMPLEX TRADING, LLC held 193,286 MSOS 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 193,286 shares
    Change vs previous 13F +134,499 shares

    0.03% of the 13F portfolio, value $981,892.

    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 58,787 shares
    Change vs previous 13F -537,318 shares

    0.01% of the 13F portfolio, value $208,693.

    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 596,105 shares
    Change vs previous 13F +174,370 shares

    0.08% of the 13F portfolio, value $2,813,615.

    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 421,735 shares
    Change vs previous 13F +144,404 shares

    0.04% of the 13F portfolio, value $2,020,000.

    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 277,331 shares
    Change vs previous 13F -34,078 shares

    0.02% of the 13F portfolio, value $668,000.

    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 311,409 shares
    Change vs previous 13F -542,086 shares

    0.03% of the 13F portfolio, value $812,000.

    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 853,495 shares
    Change vs previous 13F +540,009 shares

    0.09% of the 13F portfolio, value $3,251,000.

    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 313,486 shares
    Change vs previous 13F not available

    0.08% of the 13F portfolio, value $2,247,000.

    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).