Managers / Q1 2026
SIMPLEX TRADING, LLC
CIK 0001488542 · 230 S. LASALLE STREET, SUITE 08-500, CHICAGO, IL, 60604 · 312-360-2466
Reported Value
$149.1B
Q1 2026
Positions
10,161
Filings on Record
31
2019–present window
Filed
May 14, 2026
original filing
Summary
Simplex Trading, Llc reported $149.1B in U.S.-listed holdings across 10,161 positions for Q1 2026.
Compared with Q4 2025, the fund opened 2204 new positions and exited 1620.
Reported Value by Quarter
13F Reported Value
Portfolio Composition
By security type
- Other · 97.9% · $146.0B
- Common Stock · 1.4% · $2.1B
- ETP · 0.5% · $701M
- ADR · 0.1% · $207M
- REIT · 0.0% · $37M
- Other · 0.0% · $14M
Quarter-over-Quarter Changes full breakdown →
Holdings — Q1 2026
Filing History
| Quarter | Reported Value | Positions | Filed | Type | Links |
|---|---|---|---|---|---|
| Q1 2026 | $149.1B | 10,161 | May 14, 2026 | 13F-HR | changes · EDGAR ↗ |
| Q4 2025 | $177.4B | 9,381 | Feb 11, 2026 | 13F-HR | changes · EDGAR ↗ |
| Q3 2025 | $195M | 10,359 | Nov 12, 2025 | 13F-HR | changes · EDGAR ↗ |
| Q2 2025 | $175M | 9,904 | Aug 5, 2025 | 13F-HR | changes · EDGAR ↗ |
| Q1 2025 | $156M | 9,739 | May 12, 2025 | 13F-HR | changes · EDGAR ↗ |
| Q4 2024 | $179M | 9,701 | Feb 11, 2025 | 13F-HR | changes · EDGAR ↗ |
| Q3 2024 | $170M | 9,646 | Nov 8, 2024 | 13F-HR | changes · EDGAR ↗ |
| Q2 2024 | $162M | 9,954 | Jul 25, 2024 | 13F-HR | changes · EDGAR ↗ |
| Q1 2024 | $173M | 10,037 | Apr 25, 2024 | 13F-HR | changes · EDGAR ↗ |
| Q4 2023 | $156M | 9,984 | Feb 2, 2024 | 13F-HR | changes · EDGAR ↗ |
| Q3 2023 | $127M | 9,858 | Nov 1, 2023 | 13F-HR | changes · EDGAR ↗ |
| Q2 2023 | $122M | 10,161 | Aug 4, 2023 | 13F-HR | changes · EDGAR ↗ |
| Q1 2023 | $114M | 10,304 | Apr 27, 2023 | 13F-HR | changes · EDGAR ↗ |
| Q4 2022 | $91.9B | 10,527 | Feb 2, 2023 | 13F-HR | changes · EDGAR ↗ |
| Q3 2022 | $88.5B | 11,393 | Nov 4, 2022 | 13F-HR | changes · EDGAR ↗ |
| Q2 2022 | $94.1B | 11,351 | Aug 3, 2022 | 13F-HR | changes · EDGAR ↗ |
| Q1 2022 | $109.4B | 11,559 | May 2, 2022 | 13F-HR | changes · EDGAR ↗ |
| Q4 2021 | $99.0B | 11,473 | Feb 23, 2022 | RESTATEMENT | changes · EDGAR ↗ |
| Q3 2021 | $107.1B | 10,900 | Oct 28, 2021 | 13F-HR | changes · EDGAR ↗ |
| Q2 2021 | $103.5B | 11,103 | Aug 12, 2021 | 13F-HR | changes · EDGAR ↗ |
| Q1 2021 | $55.7B | 10,782 | Apr 26, 2021 | 13F-HR | changes · EDGAR ↗ |
| Q4 2020 | $77.2B | 9,759 | Feb 2, 2021 | 13F-HR | changes · EDGAR ↗ |
| Q3 2020 | $73.5B | 9,133 | Oct 14, 2020 | 13F-HR | changes · EDGAR ↗ |
| Q2 2020 | $62.7B | 8,797 | Jul 13, 2020 | 13F-HR | changes · EDGAR ↗ |
| Q1 2020 | $56.7B | 8,558 | Apr 29, 2020 | 13F-HR | changes · EDGAR ↗ |
| Q4 2019 | $45.7B | 8,124 | Feb 5, 2020 | 13F-HR | changes · EDGAR ↗ |
| Q3 2019 | $35.2B | 8,137 | Oct 15, 2019 | 13F-HR | changes · EDGAR ↗ |
| Q2 2019 | $36.6B | 7,921 | Jul 26, 2019 | 13F-HR | changes · EDGAR ↗ |
| Q1 2019 | $36.0B | 7,930 | Apr 18, 2019 | 13F-HR | changes · EDGAR ↗ |
| Q4 2018 | $34.1B | 7,843 | Jan 16, 2019 | 13F-HR | changes · 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 ↗.