SEC 13F Intelligence

Managers / Q2 2025 · view latest →

SIMPLEX TRADING, LLC

CIK 0001488542 · 230 S. LASALLE STREET, SUITE 08-500, CHICAGO, IL, 60604 · 312-360-2466

Reported Value
$175M
Q2 2025
Positions
9,904
Filings on Record
31
2019–present window
Filed
Aug 5, 2025
original filing

Summary

Simplex Trading, Llc reported $175M in U.S.-listed holdings across 9,904 positions for Q2 2025.

Compared with Q1 2025, the fund opened 1579 new positions and exited 1456.

Reported Value by Quarter

13F Reported Value
Q4 ’18: $34.1BQ4 ’18Q1 ’19: $36.0BQ2 ’19: $36.6BQ3 ’19: $35.2BQ4 ’19: $45.7BQ4 ’19Q1 ’20: $56.7BQ2 ’20: $62.7BQ3 ’20: $73.5BQ4 ’20: $77.2BQ4 ’20Q1 ’21: $55.7BQ2 ’21: $103.5BQ3 ’21: $107.1BQ4 ’21: $99.0BQ4 ’21Q1 ’22: $109.4BQ2 ’22: $94.1BQ3 ’22: $88.5BQ4 ’22: $91.9BQ4 ’22Q1 ’23: $114MQ2 ’23: $122MQ3 ’23: $127MQ4 ’23: $156MQ4 ’23Q1 ’24: $173MQ2 ’24: $162MQ3 ’24: $170MQ4 ’24: $179MQ4 ’24Q1 ’25: $156MQ2 ’25: $175MQ3 ’25: $195MQ4 ’25: $177.4BQ4 ’25Q1 ’26: $149.1Bfilingsflow.com

Portfolio Composition

By security type

Composition data arrives with ticker enrichment.

Quarter-over-Quarter Changes full breakdown →

Holdings — Q2 2025

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#IssuerClass% PortfolioValueShares

Filing History

QuarterReported ValuePositionsFiledTypeLinks
Q1 2026$149.1B10,161May 14, 202613F-HRchanges · EDGAR ↗
Q4 2025$177.4B9,381Feb 11, 202613F-HRchanges · EDGAR ↗
Q3 2025$195M10,359Nov 12, 202513F-HRchanges · EDGAR ↗
Q2 2025$175M9,904Aug 5, 202513F-HRchanges · EDGAR ↗
Q1 2025$156M9,739May 12, 202513F-HRchanges · EDGAR ↗
Q4 2024$179M9,701Feb 11, 202513F-HRchanges · EDGAR ↗
Q3 2024$170M9,646Nov 8, 202413F-HRchanges · EDGAR ↗
Q2 2024$162M9,954Jul 25, 202413F-HRchanges · EDGAR ↗
Q1 2024$173M10,037Apr 25, 202413F-HRchanges · EDGAR ↗
Q4 2023$156M9,984Feb 2, 202413F-HRchanges · EDGAR ↗
Q3 2023$127M9,858Nov 1, 202313F-HRchanges · EDGAR ↗
Q2 2023$122M10,161Aug 4, 202313F-HRchanges · EDGAR ↗
Q1 2023$114M10,304Apr 27, 202313F-HRchanges · EDGAR ↗
Q4 2022$91.9B10,527Feb 2, 202313F-HRchanges · EDGAR ↗
Q3 2022$88.5B11,393Nov 4, 202213F-HRchanges · EDGAR ↗
Q2 2022$94.1B11,351Aug 3, 202213F-HRchanges · EDGAR ↗
Q1 2022$109.4B11,559May 2, 202213F-HRchanges · EDGAR ↗
Q4 2021$99.0B11,473Feb 23, 2022RESTATEMENTchanges · EDGAR ↗
Q3 2021$107.1B10,900Oct 28, 202113F-HRchanges · EDGAR ↗
Q2 2021$103.5B11,103Aug 12, 202113F-HRchanges · EDGAR ↗
Q1 2021$55.7B10,782Apr 26, 202113F-HRchanges · EDGAR ↗
Q4 2020$77.2B9,759Feb 2, 202113F-HRchanges · EDGAR ↗
Q3 2020$73.5B9,133Oct 14, 202013F-HRchanges · EDGAR ↗
Q2 2020$62.7B8,797Jul 13, 202013F-HRchanges · EDGAR ↗
Q1 2020$56.7B8,558Apr 29, 202013F-HRchanges · EDGAR ↗
Q4 2019$45.7B8,124Feb 5, 202013F-HRchanges · EDGAR ↗
Q3 2019$35.2B8,137Oct 15, 201913F-HRchanges · EDGAR ↗
Q2 2019$36.6B7,921Jul 26, 201913F-HRchanges · EDGAR ↗
Q1 2019$36.0B7,930Apr 18, 201913F-HRchanges · EDGAR ↗
Q4 2018$34.1B7,843Jan 16, 201913F-HRchanges · EDGAR ↗

13F filings are due up to 45 days after quarter end, so holdings shown here lag the fund’s current book. Source: original SEC filing on EDGAR ↗.