SIMPLEX TRADING, LLC

Q4 2025 13F-HR Holdings

Location
Chicago, IL
Holdings as of
12/31/2025
Date filed
2/11/2026
Form type
13F-HR
Num holdings
8,343
Total value ($000)
$177,415,581
Net value change ($000)
-17,475,095 (-9.0%)
New positions
905
Sold out positions
1078
Turnover %
50.3%
Sector allocation + QoQ delta (equities-only)
Prev filing: 11/12/2025 Next filing: — SEC filing

Snapshot: Change Analysis

Compared to Q3 2025
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)
NFLX 63,263 4140.2%
WDC 58,875 NEW
SOXX 47,007 NEW
META 41,367 NEW
BABA 33,374 54711.5%
SMH 27,955 NEW
RKLB 27,912 NEW
PLTR 22,552 197.0%
BE 21,276 433.5%
SOXL 21,245 69.1%
Top Reduces (Value $000, Stocks/ETFs)
NVDA -262,823 -65.5%
MSFT -203,233 -85.6%
IWM -149,430 -100.0%
AMZN -102,489 -100.0%
AAPL -101,036 -34.4%
IBIT -89,284 -89.9%
UNH -79,906 -72.3%
XLV -64,447 -93.6%
IREN -60,453 -89.3%
PDD -59,576 -97.3%
Instrument mix + QoQ Δ (ex-options)
Derivatives reported exposure ($000): 173,859,890 (98.0% 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