SIMPLEX TRADING, LLC

Name: SIMPLEX TRADING, LLC — 13F holdings
Creator: Fundocap
License: https://creativecommons.org/licenses/by/4.0/

CIK 0001488542 · CHICAGO, IL · Quarter end: 2026-06-30 · Filed on: 2026-08-12 · Open the SEC source ↗

SIMPLEX TRADING, LLC reported 9,154 positions worth $170.57B as of June 30, 2026 (13F filed August 12, 2026). Largest holding: STATE STR SPDR S&P 500 ETF T (14.6%).

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

Positions Changes Mix History BacktestPRO

10 / 9154 positions shown

#	Symbol	Company	Type	Value ↓	% Port.	Shares	1Y	YTD
▸ 1	78462F953	STATE STR SPDR S&P 500 ETF T	PUT	$24.95B	14.63%	33,407,300	—	—
▸ 2	78462F903	STATE STR SPDR S&P 500 ETF T	CALL	$16.97B	9.95%	22,725,000	—	—
▸ 3	46090E953	INVESCO QQQ TR	PUT	$10.14B	5.94%	13,765,500	—	—
▸ 4	46090E903	INVESCO QQQ TR	CALL	$8.03B	4.71%	10,904,800	—	—
▸ 5	464287957	ISHARES TR	PUT	$7.76B	4.55%	39,367,200	—	—
▸ 6	595112953	MICRON TECHNOLOGY INC	PUT	$3.63B	2.13%	3,140,900	—	—
▸ 7	67066G904	NVIDIA CORPORATION	CALL	$3.51B	2.06%	17,519,600	—	—
▸ 8	464287907	ISHARES TR	CALL	$3.34B	1.96%	26,912,500	—	—
▸ 9	67066G954	NVIDIA CORPORATION	PUT	$3.28B	1.92%	16,385,300	—	—
▸ 10	88160R901	TESLA INC	CALL	$2.94B	1.73%	7,001,500	—	—

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Read the 2026-Q2 quarterly report · 13F Filing Calendar

Frequently Asked Questions

What stocks does SIMPLEX TRADING, LLC hold as of Q2 2026?

SIMPLEX TRADING, LLC reported 9154 positions worth $170.57B in its Q2 2026 13F filing. Largest positions: STATE STR SPDR S&P 500 ETF T (14.6%), STATE STR SPDR S&P 500 ETF T (9.9%), INVESCO QQQ TR (5.9%), INVESCO QQQ TR (4.7%) and ISHARES TR (4.5%).

What did SIMPLEX TRADING, LLC buy in Q2 2026?

No previous quarter is available yet; the comparison appears with the next filing.

What did SIMPLEX TRADING, LLC sell in Q2 2026?

No previous quarter is available yet.

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.