Simplex Trading, Llc

Business address
230 S. Lasalle Street, Suite 08 500, Chicago, IL, 60604
State of incorporation
DE
Fiscal year end
December 31
Former names
SET TRADING PARTNERS, LLC (to 2/28/2014), MULTIPLEX TRADING LLC (to 2/29/2012)
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Simplex Trading, Llc has filed 70 SEC EDGAR filings since 3/1/2011

Latest Filings

Form type Document Filing Description Filing date Reporting date File number(s)
13F-HR Open Document Open Filing Nov 12, 2025 Sep 30, 2025 028-16834
13F-HR Open Document Open Filing Aug 5, 2025 Jun 30, 2025 028-16834
13F-HR Open Document Open Filing May 12, 2025 Mar 31, 2025 028-16834
X-17A-5 Open Document Open Filing Mar 3, 2025 Dec 31, 2024 008-68556
13F-HR Open Document Open Filing Feb 11, 2025 Dec 31, 2024 028-16834
13F-HR Open Document Open Filing Nov 8, 2024 Sep 30, 2024 028-16834
13F-HR Open Document Open Filing Jul 25, 2024 Jun 30, 2024 028-16834
13F-HR Open Document Open Filing Apr 25, 2024 Mar 31, 2024 028-16834
FOCUSN Open Document Open Filing AUTO-GENERATED PAPER DOCUMENT Mar 4, 2024 Dec 31, 2023 008-68556
X-17A-5 Open Document Open Filing AUTO-GENERATED PAPER DOCUMENT Mar 4, 2024 Dec 31, 2023 008-68556
13F-HR Open Document Open Filing Feb 2, 2024 Dec 31, 2023 028-16834
13F-HR Open Document Open Filing Nov 1, 2023 Sep 30, 2023 028-16834
13F-HR Open Document Open Filing Aug 4, 2023 Jun 30, 2023 028-16834
X-17A-5 Open Document Open Filing AUTO-GENERATED PAPER DOCUMENT Jul 11, 2023 Dec 31, 2022 008-68556
13F-HR Open Document Open Filing Apr 27, 2023 Mar 31, 2023 028-16834
13F-HR Open Document Open Filing Feb 2, 2023 Dec 31, 2022 028-16834
13F-HR Open Document Open Filing Nov 4, 2022 Sep 30, 2022 028-16834
13F-HR Open Document Open Filing Aug 3, 2022 Jun 30, 2022 028-16834
13F-HR Open Document Open Filing May 2, 2022 Mar 31, 2022 028-16834
FOCUSN Open Document Open Filing AUTO-GENERATED PAPER DOCUMENT Mar 4, 2022 Dec 31, 2021 008-68556
X-17A-5 Open Document Open Filing AUTO-GENERATED PAPER DOCUMENT Mar 4, 2022 Dec 31, 2021 008-68556
13F-HR/A Open Document Open Filing Feb 23, 2022 Dec 31, 2021 028-16834
13F-HR Open Document Open Filing Feb 4, 2022 Dec 31, 2021 028-16834
13F-HR Open Document Open Filing Oct 28, 2021 Sep 30, 2021 028-16834
13F-HR Open Document Open Filing Aug 12, 2021 Jun 30, 2021 028-16834
FOCUSN Open Document Open Filing AUTO-GENERATED PAPER DOCUMENT May 10, 2021 Dec 31, 2020 008-68556
13F-HR Open Document Open Filing Apr 26, 2021 Mar 31, 2021 028-16834
X-17A-5 Open Document Open Filing AUTO-GENERATED PAPER DOCUMENT Mar 1, 2021 Dec 31, 2020 008-68556
13F-HR Open Document Open Filing Feb 2, 2021 Dec 31, 2020 028-16834
13F-HR Open Document Open Filing Oct 14, 2020 Sep 30, 2020 028-16834
13F-HR Open Document Open Filing Jul 13, 2020 Jun 30, 2020 028-16834
13F-HR Open Document Open Filing Apr 29, 2020 Mar 31, 2020 028-16834
FOCUSN Open Document Open Filing AUTO-GENERATED PAPER DOCUMENT Mar 2, 2020 Dec 31, 2019 008-68556
X-17A-5 Open Document Open Filing AUTO-GENERATED PAPER DOCUMENT Mar 2, 2020 Dec 31, 2019 008-68556
13F-HR Open Document Open Filing Feb 5, 2020 Dec 31, 2019 028-16834
13F-HR Open Document Open Filing Oct 15, 2019 Sep 30, 2019 028-16834
13F-HR Open Document Open Filing Jul 26, 2019 Jun 30, 2019 028-16834
13F-HR Open Document Open Filing Apr 18, 2019 Mar 31, 2019 028-16834
FOCUSN Open Document Open Filing AUTO-GENERATED PAPER DOCUMENT Mar 1, 2019 Dec 31, 2018 008-68556
X-17A-5 Open Document Open Filing AUTO-GENERATED PAPER DOCUMENT Mar 1, 2019 Dec 31, 2018 008-68556
13F-HR Open Document Open Filing Jan 16, 2019 Dec 31, 2018 028-16834
13F-HR Open Document Open Filing Oct 23, 2018 Sep 30, 2018 028-16834
13F-HR Open Document Open Filing Jul 30, 2018 Jun 30, 2018 028-16834
13F-HR Open Document Open Filing Apr 26, 2018 Mar 31, 2018 028-16834
X-17A-5 Open Document Open Filing Mar 1, 2018 Dec 31, 2017 008-68556
13F-HR Open Document Open Filing Jan 10, 2018 Dec 31, 2017 028-16834
13F-HR Open Document Open Filing Oct 25, 2017 Sep 30, 2017 028-16834
13F-HR Open Document Open Filing Jul 12, 2017 Jun 30, 2017 028-16834
13F-HR Open Document Open Filing Apr 21, 2017 Mar 31, 2017 028-16834
X-17A-5 Open Document Open Filing Feb 28, 2017 Dec 31, 2016 008-68556
13F-HR Open Document Open Filing Jan 11, 2017 Dec 31, 2016 028-16834
13F-HR Open Document Open Filing Oct 7, 2016 Sep 30, 2016 028-16834
13F-HR Open Document Open Filing Jul 18, 2016 Jun 30, 2016 028-16834
13F-HR Open Document Open Filing Apr 14, 2016 Mar 31, 2016 028-16834
X-17A-5 Open Document Open Filing Feb 24, 2016 Dec 31, 2015 008-68556
13F-HR Open Document Open Filing Jan 20, 2016 Dec 31, 2015 028-16834
13F-HR Open Document Open Filing Oct 8, 2015 Sep 30, 2015 028-16834
13F-HR Open Document Open Filing Jul 8, 2015 Jun 30, 2015 028-16834
13F-HR Open Document Open Filing Apr 21, 2015 Mar 31, 2015 028-16834
13F-HR Open Document Open Filing Mar 4, 2015 Dec 31, 2014 028-16834
FOCUSN Open Document Open Filing AUTO-GENERATED PAPER DOCUMENT Feb 26, 2015 Dec 31, 2014 008-68556
X-17A-5 Open Document Open Filing AUTO-GENERATED PAPER DOCUMENT Feb 26, 2015 Dec 31, 2014 008-68556
FOCUSN Open Document Open Filing AUTO-GENERATED PAPER DOCUMENT Feb 28, 2014 Dec 31, 2013 008-68556
X-17A-5 Open Document Open Filing AUTO-GENERATED PAPER DOCUMENT Feb 28, 2014 Dec 31, 2013 008-68556