SIMPLEX TRADING LLC
Q3 2024 Form 13-F
CHICAGO, ILLINOIS
CIK 0001488542
· Institutional investment manager
$170.4B Reported Value Total
Reported value
$170.4B
Quarter over quarter
+4.0%
Holdings
2,053
Top-10 concentration
50.3%
Key People
Named on the latest Form 13-F filing — not necessarily an owner
Dennis Kerlin
Chief Compliance Officer
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Q3 2024 13F record
Q3 2024 13F filing summary
| Period of report | September 30, 2024 |
|---|---|
| Filed | November 08, 2024 |
| Form | 13F-HR |
| Reported value | $170.4B |
| Positions | 2,053 |
| Change in reported value | +5.3% |
| New positions | 786 |
| Exited positions | 887 |
| Position turnover | 56.9% |
| Top-10 concentration | 50.3% |
13F filings by quarter
| Quarter | Positions | Value |
|---|---|---|
|
Q3 2026 13F
Filed Nov 4, 2026
|
2,705 | $183.8B |
|
Q2 2026 13F
Filed Aug 12, 2026
|
2,733 | $170.6B |
|
Q1 2026 13F
Filed May 14, 2026
|
2,613 | $149.1B |
|
Q4 2025 13F
Filed Feb 11, 2026
|
2,448 | $177.4B |
|
Q3 2025 13F
Filed Nov 12, 2025
|
2,421 | $194.9B |
|
Q2 2025 13F
Filed Aug 5, 2025
|
2,203 | $174.6B |
|
Q1 2025 13F
Filed May 12, 2025
|
2,153 | $156.2B |
|
Q4 2024 13F
Filed Feb 11, 2025
|
2,213 | $178.6B |
|
Q3 2024 13F
Filed Nov 8, 2024
|
2,053 | $170.4B |
|
Q2 2024 13F
Filed Jul 25, 2024
|
2,161 | $161.9B |
|
Q1 2024 13F
Filed Apr 25, 2024
|
2,165 | $173.1B |
|
Q4 2023 13F
Filed Feb 2, 2024
|
2,187 | $156.4B |
|
Q3 2023 13F
Filed Nov 1, 2023
|
2,030 | $127.1B |
|
Q2 2023 13F
Filed Aug 4, 2023
|
2,141 | $121.6B |
|
Q1 2023 13F
Filed Apr 27, 2023
|
2,088 | $113.8B |
|
Q4 2022 13F
Filed Feb 2, 2023
|
2,246 | $91.9B |
|
Q3 2022 13F
Filed Nov 4, 2022
|
2,448 | $88.5B |
|
Q2 2022 13F
Filed Aug 3, 2022
|
2,383 | $94.1B |
|
Q1 2022 13F
Filed May 2, 2022
|
2,667 | $109.4B |
|
Q4 2021 13F
Filed Feb 4, 2022
|
2,810 | $99.0B |
28 earlier quarters on file — choose one from the quarter menu above.
Top 20 holdings · Q3 2024
| # | Holding | Reported value | % of portfolio |
|---|---|---|---|
| 1 | SPY P SPDR S&P 500 ETF TR | $32.8B | 19.24% |
| 2 | SPY C SPDR S&P 500 ETF TR | $14.7B | 8.65% |
| 3 | QQQ P INVESCO QQQ TR | $7.1B | 4.18% |
| 4 | NYC P ISHARES TR | $6.7B | 3.92% |
| 5 | NVDA C NVIDIA CORPORATION | $4.9B | 2.87% |
| 6 | NVDA P NVIDIA CORPORATION | $4.9B | 2.86% |
| 7 | QQQ C INVESCO QQQ TR | $4.7B | 2.75% |
| 8 | NYC C ISHARES TR | $4.3B | 2.52% |
| 9 | AAPL C APPLE INC | $2.9B | 1.69% |
| 10 | TSLA C TESLA INC | $2.8B | 1.66% |
| 11 | TSLA P TESLA INC | $2.2B | 1.31% |
| 12 | AAPL P APPLE INC | $2.0B | 1.15% |
| 13 | META C META PLATFORMS INC | $1.8B | 1.07% |
| 14 | XLBI P SELECT SECTOR SPDR TR | $1.5B | 0.87% |
| 15 | GLD C SPDR GOLD TR | $1.4B | 0.82% |
| 16 | MSFT C MICROSOFT CORP | $1.2B | 0.72% |
| 17 | META P META PLATFORMS INC | $1.2B | 0.72% |
| 18 | GOOG C ALPHABET INC | $1.2B | 0.72% |
| 19 | AMZN C AMAZON COM INC | $1.0B | 0.6% |
| 20 | GLD P SPDR GOLD TR | $1.0B | 0.6% |
Values as reported on the Q3 2024 Form 13F. Every position is in the holdings table below.