SIMPLEX TRADING, LLC
CIK 0001488542 · CHICAGO, IL · Quarter end: 2026-06-30 · Filed on: 2026-08-12 · Open the SEC source ↗
Portfolio Value (AUM)Total value of the fund's US stock portfolio reported to the SEC.
$170.57B
2026 Q2
Positions
9,154
Top-10 ConcentrationHow much of the portfolio sits in the 10 largest holdings. High = concentrated bets.
49.6%
Est. Net Flow (Q)
—
2026 Q2
Top Holdings
78462F953PUT
STATE STR SPDR S&P 500 ETF T
14.6%
78462F903CALL
STATE STR SPDR S&P 500 ETF T
9.9%
46090E953PUT
INVESCO QQQ TR
5.9%
46090E903CALL
INVESCO QQQ TR
4.7%
464287957PUT
ISHARES TR
4.5%
595112953PUT
MICRON TECHNOLOGY INC
2.1%
67066G904CALL
NVIDIA CORPORATION
2.1%
464287907CALL
ISHARES TR
2.0%
New / Increased
No prior quarter data
Reduced / Exited
No prior quarter data
Read the 2026-Q2 quarterly report · 13F Filing Calendar
13F data shows quarter-end positions, is delayed by up to 45 days and covers only long positions in US-listed securities; short positions, most derivatives and non-US assets are not reported.