Mailing Address 230 S. LASALLE STREET SUITE 08-500 CHICAGO IL 60604
Business Address 230 S. LASALLE STREET SUITE 08-500 CHICAGO IL 60604 312.360.2440
SIMPLEX TRADING, LLC CIK#: 0001488542 (see all company filings)

State location: IL | State of Inc.: DE | Fiscal Year End: 1231
formerly: MULTIPLEX TRADING LLC (filings through 2012-02-29)
formerly: SET TRADING PARTNERS, LLC (filings through 2014-02-28)

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Items 1 - 40  0001488542 Filings RSS Feed
Filings Format Description Filing Date File/Film Number
X-17A-5  Documents FOCUS Report
Acc-no: 0001488542-25-000005 (34 Act)  Size: 1 MB
2025-03-03 008-68556
25700781
13F-HR  Documents Quarterly report filed by institutional managers, Holdings
Acc-no: 0001488542-25-000001 (34 Act)  Size: 5 MB
2025-02-11 028-16834
25608816
13F-HR  Documents Quarterly report filed by institutional managers, Holdings
Acc-no: 0001488542-24-000015 (34 Act)  Size: 5 MB
2024-11-08 028-16834
241439922
13F-HR  Documents Quarterly report filed by institutional managers, Holdings
Acc-no: 0001464302-24-000003 (34 Act)  Size: 5 MB
2024-07-25 028-16834
241141187
13F-HR  Documents Quarterly report filed by institutional managers, Holdings
Acc-no: 0001488542-24-000013 (34 Act)  Size: 5 MB
2024-04-25 028-16834
24874898
FOCUSN  Documents [Paper]Non-public annual audit reports filed by brokers or dealers
Acc-no: 9999999997-24-001894 (34 Act)  Size: 1 KB
2024-03-04 008-68556
24000691
X-17A-5  Documents [Paper]FOCUS Report
Acc-no: 9999999997-24-001747 (34 Act)  Size: 1 KB
2024-03-04 008-68556
24000706
13F-HR  Documents Quarterly report filed by institutional managers, Holdings
Acc-no: 0001488542-24-000008 (34 Act)  Size: 5 MB
2024-02-02 028-16834
24590775
13F-HR  Documents Quarterly report filed by institutional managers, Holdings
Acc-no: 0001488542-23-000018 (34 Act)  Size: 5 MB
2023-11-01 028-16834
231367272
13F-HR  Documents Quarterly report filed by institutional managers, Holdings
Acc-no: 0001488542-23-000009 (34 Act)  Size: 5 MB
2023-08-04 028-16834
231143081
X-17A-5  Documents [Paper]FOCUS Report
Acc-no: 9999999997-23-003643 (34 Act)  Size: 1 KB
2023-07-11 008-68556
23008431
13F-HR  Documents Quarterly report filed by institutional managers, Holdings
Acc-no: 0001488542-23-000006 (34 Act)  Size: 5 MB
2023-04-27 028-16834
23852414
13F-HR  Documents Quarterly report filed by institutional managers, Holdings
Acc-no: 0001488542-23-000003 (34 Act)  Size: 5 MB
2023-02-02 028-16834
23581555
13F-HR  Documents Quarterly report filed by institutional managers, Holdings
Acc-no: 0001488542-22-000011 (34 Act)  Size: 6 MB
2022-11-04 028-16834
221362309
13F-HR  Documents Quarterly report filed by institutional managers, Holdings
Acc-no: 0001488542-22-000009 (34 Act)  Size: 6 MB
2022-08-03 028-16834
221131898
13F-HR  Documents Quarterly report filed by institutional managers, Holdings
Acc-no: 0001488542-22-000006 (34 Act)  Size: 6 MB
2022-05-02 028-16834
22883278
FOCUSN  Documents [Paper]Non-public annual audit reports filed by brokers or dealers
Acc-no: 9999999997-22-002454 (34 Act)  Size: 1 KB
2022-03-04 008-68556
22004227
X-17A-5  Documents [Paper]FOCUS Report
Acc-no: 9999999997-22-002312 (34 Act)  Size: 1 KB
2022-03-04 008-68556
22004230
13F-HR/A  Documents [Amend] Quarterly report filed by institutional managers, Holdings
Acc-no: 0001488542-22-000005 (34 Act)  Size: 6 MB
2022-02-23 028-16834
22660925
13F-HR  Documents Quarterly report filed by institutional managers, Holdings
Acc-no: 0001488542-22-000002 (34 Act)  Size: 5 MB
2022-02-04 028-16834
22592088
13F-HR  Documents Quarterly report filed by institutional managers, Holdings
Acc-no: 0001488542-21-000012 (34 Act)  Size: 5 MB
2021-10-28 028-16834
211355656
13F-HR  Documents Quarterly report filed by institutional managers, Holdings
Acc-no: 0001488542-21-000009 (34 Act)  Size: 6 MB
2021-08-12 028-16834
211166365
FOCUSN  Documents [Paper]Non-public annual audit reports filed by brokers or dealers
Acc-no: 9999999997-21-003645 (34 Act)  Size: 1 KB
2021-05-10 008-68556
21001681
13F-HR  Documents Quarterly report filed by institutional managers, Holdings
Acc-no: 0001488542-21-000007 (34 Act)  Size: 5 MB
2021-04-26 028-16834
21853188
X-17A-5  Documents [Paper]FOCUS Report
Acc-no: 9999999997-21-001884 (34 Act)  Size: 1 KB
2021-03-01 008-68556
21002844
13F-HR  Documents Quarterly report filed by institutional managers, Holdings
Acc-no: 0001488542-21-000002 (34 Act)  Size: 5 MB
2021-02-02 028-16834
21581921
13F-HR  Documents Quarterly report filed by institutional managers, Holdings
Acc-no: 0001488542-20-000009 (34 Act)  Size: 4 MB
2020-10-14 028-16834
201238607
13F-HR  Documents Quarterly report filed by institutional managers, Holdings
Acc-no: 0001488542-20-000007 (34 Act)  Size: 4 MB
2020-07-13 028-16834
201024678
13F-HR  Documents Quarterly report filed by institutional managers, Holdings
Acc-no: 0001488542-20-000005 (34 Act)  Size: 4 MB
2020-04-29 028-16834
20826380
FOCUSN  Documents [Paper]Non-public annual audit reports filed by brokers or dealers
Acc-no: 9999999997-20-003158 (34 Act)  Size: 1 KB
2020-03-02 008-68556
20008123
X-17A-5  Documents [Paper]FOCUS Report
Acc-no: 9999999997-20-003091 (34 Act)  Size: 1 KB
2020-03-02 008-68556
20008122
13F-HR  Documents Quarterly report filed by institutional managers, Holdings
Acc-no: 0001488542-20-000002 (34 Act)  Size: 4 MB
2020-02-05 028-16834
20576670
13F-HR  Documents Quarterly report filed by institutional managers, Holdings
Acc-no: 0001488542-19-000021 (34 Act)  Size: 4 MB
2019-10-15 028-16834
191150885
13F-HR  Documents Quarterly report filed by institutional managers, Holdings
Acc-no: 0001488542-19-000017 (34 Act)  Size: 4 MB
2019-07-26 028-16834
19978462
13F-HR  Documents Quarterly report filed by institutional managers, Holdings
Acc-no: 0001488542-19-000011 (34 Act)  Size: 4 MB
2019-04-18 028-16834
19756354
FOCUSN  Documents [Paper]Non-public annual audit reports filed by brokers or dealers
Acc-no: 9999999997-19-002891 (34 Act)  Size: 1 KB
2019-03-01 008-68556
19006445
X-17A-5  Documents [Paper]FOCUS Report
Acc-no: 9999999997-19-002886 (34 Act)  Size: 1 KB
2019-03-01 008-68556
19006480
13F-HR  Documents Quarterly report filed by institutional managers, Holdings
Acc-no: 0001488542-19-000002 (34 Act)  Size: 4 MB
2019-01-16 028-16834
19528998
13F-HR  Documents Quarterly report filed by institutional managers, Holdings
Acc-no: 0001488542-18-000018 (34 Act)  Size: 4 MB
2018-10-23 028-16834
181133642
13F-HR  Documents Quarterly report filed by institutional managers, Holdings
Acc-no: 0001488542-18-000014 (34 Act)  Size: 4 MB
2018-07-30 028-16834
18976595