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SIMPLEX TRADING, LLC: ASPN position timeline

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

SIMPLEX TRADING, LLC held 15,952 ASPN 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 15,952 shares
    Change vs previous 13F +13,578 shares

    <0.01% of the 13F portfolio, value $101,135.

    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 2,374 shares
    Change vs previous 13F -2,458 shares

    <0.01% of the 13F portfolio, value $8,119.

    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 4,832 shares
    Change vs previous 13F -11,419 shares

    <0.01% of the 13F portfolio, value $13,674.

    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 16,251 shares
    Change vs previous 13F +15,198 shares

    <0.01% of the 13F portfolio, value $113,000.

    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 1,053 shares
    Change vs previous 13F -6,027 shares

    <0.01% of the 13F portfolio, value $6,000.

    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 7,080 shares
    Change vs previous 13F +3,414 shares

    <0.01% of the 13F portfolio, value $45,000.

    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 3,666 shares
    Change vs previous 13F -22,815 shares

    <0.01% of the 13F portfolio, value $43,000.

    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 26,481 shares
    Change vs previous 13F not available

    0.02% of the 13F portfolio, value $733,000.

    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).