SIMPLEX TRADING, LLC

Q3 2026 13F-HR Holdings

Location
Chicago, IL
Holdings as of
9/30/2026
Date filed
11/4/2026
Form type
13F-HR
Num holdings
9,112
Total value ($000)
$183,823,873
Net value change ($000)
+13,258,841 (7.8%)
New positions
929
Sold out positions
957
Turnover %
42.6%
Sector allocation + QoQ delta (equities-only)
Prev filing: 8/12/2026 Next filing: — SEC filing

Snapshot: Change Analysis

Compared to Q2 2026
Methodology: sector metrics are equities-only; instrument mix chart is ex-options; options exposure is shown separately. Why this matters.
Top Adds (Value $000, Stocks/ETFs)
HYG 78,564 NEW
TLT 71,290 44.3%
AMZN 30,196 31.3%
XLI 24,082 NEW
GLD 21,120 75.0%
EWZ 19,015 NEW
C 16,490 421.8%
CI 16,406 178.6%
WMT 14,097 586.6%
XLK 14,064 225.1%
Top Reduces (Value $000, Stocks/ETFs)
GOOGL -131,598 -100.0%
TSLA -63,370 -100.0%
NVDA -61,168 -20.1%
MU -60,810 -100.0%
TSM -51,301 -72.9%
SPY -39,949 -100.0%
GOOG -37,260 -71.4%
KLAC -36,911 -99.4%
USO -34,988 -67.0%
META -33,962 -100.0%
Instrument mix + QoQ Δ (ex-options)
Derivatives reported exposure ($000): 180,663,221 (98.3% of total reported value)
How this table is calculated: SEC VALUE ($000) is used as reported. For derivatives (PUT/CALL/WARRANT/RIGHT), SEC value represents reported underlying exposure, not premium cash paid/received. Column % is bucket-based: non-options share is calculated inside non-option total, options share is calculated inside options total. Details.
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Instrument:
Issuer Name Ticker Sector Industry Class History Value ($000) % Shares Shares Δ Shares Δ% Value Δ ($000) Value Δ% Principal Option Type