§ 13F · FUND PROFILE
SIMPLEX TRADING, LLC.
AUM · $170.6B (13F)Positions · 10492Turnover · 85% · Q2Filed · Aug 12, 2026
CONCENTRATION
48%
Top 10 holdings
NEW BUYS
+1775
+$1.9B deployed
EXITS
0
No exits
SECTOR SHIFT
n/a
No prior quarter data
§ 01 · TOP HOLDINGS
The book · Q2 2026
FILED AUG 12, 2026
| # | Ticker | Name | Shares | $ value | % port | Δ Q2 |
|---|---|---|---|---|---|---|
| 1 | SPY | STATE STR SPDR S&P 500 ETF T | 33.41M | $24.9B | 14.6% | −21% |
| 2 | SPY | STATE STR SPDR S&P 500 ETF T | 22.73M | $17.0B | 9.9% | +5% |
| 3 | QQQ | INVESCO QQQ TR | 13.77M | $10.1B | 5.9% | +22% |
| 4 | QQQ | INVESCO QQQ TR | 10.90M | $8.0B | 4.7% | +5% |
| 5 | — | ISHARES TR | 19.57M | $5.9B | 3.4% | +15% |
| 6 | MU | MICRON TECHNOLOGY INC | 3.14M | $3.6B | 2.1% | +48% |
| 7 | NVDA | NVIDIA CORPORATION | 17.52M | $3.5B | 2.1% | −8% |
| 8 | NVDA | NVIDIA CORPORATION | 16.39M | $3.3B | 1.9% | −15% |
| 9 | TSLA | TESLA INC | 7.00M | $2.9B | 1.7% | −24% |
| 10 | TSLA | TESLA INC | 5.80M | $2.4B | 1.4% | −30% |
§ 02 · SECTOR ALLOCATION
Where the money is
Semiconductors13.8%
Other10.9%
Technology10.1%
Media5.6%
Automobiles3.3%
Retail2.3%
§ 03 · THE SIMPLEX SIGNAL
AC read
SIMPLEX TRADING, LLC is a Other fund managing $170.6 billion in assets. The fund runs a massive portfolio of 10,492 positions, moderate concentration, with the top 10 accounting for 48%. Trading activity is aggressive at 85% quarterly turnover, with 1775 new positions and 0 exits last quarter. Top sector allocations: Semiconductors (14%), Other (11%), Technology (10%).
Read the full dossier →§ 04 · FILING HISTORY
Q-by-Q deltas
1 OF 2 FILINGS MEASURED
Q2 2026
Busy quarter
+1775 buys · −0 exits · 7139 changed