Form 13F-HR - Quarterly report filed by institutional managers, Holdings:
SEC Accession No. 0001488542-26-000009
Filing Date
2026-05-14
Accepted
2026-05-14 13:57:51
Documents
2
Period of Report
2026-03-31
Effectiveness Date
2026-05-14

Document Format Files

Seq Description Document Type Size
1 primary_doc.html 13F-HR  
1 primary_doc.xml 13F-HR 1976
2 InformationTable.html INFORMATION TABLE  
2 InformationTable.xml INFORMATION TABLE 5559285
  Complete submission text file 0001488542-26-000009.txt   5562691
Mailing Address 230 S. LASALLE STREET SUITE 08-500 CHICAGO IL 60604
Business Address 230 S. LASALLE STREET SUITE 08-500 CHICAGO IL 60604 312-360-2466
SIMPLEX TRADING, LLC (Filer) CIK: 0001488542 (see all company filings)

EIN.: 272031362 | State of Incorp.: DE | Fiscal Year End: 1231
Type: 13F-HR | Act: 34 | File No.: 028-16834 | Film No.: 26977740