SIMPLEX TRADING, LLC

Q1 2025 13F-HR Holdings

Location
Chicago, IL
Holdings as of
3/31/2025
Date filed
5/12/2025
Form type
13F-HR
Num holdings
8,744
Total value ($000)
$156,192,203
Net value change ($000)
-22,434,513 (-12.6%)
New positions
908
Sold out positions
947
Turnover %
67.5%
Sector allocation + QoQ delta (equities-only)
Prev filing: 2/11/2025 Next filing: 8/5/2025 SEC filing

Snapshot: Change Analysis

Compared to Q4 2024
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)
TLT 278,367 NEW
GOOGL 84,378 NEW
TSM 73,996 1282.4%
NVDA 66,419 122.4%
AMZN 53,493 NEW
MU 53,397 1559.9%
NFLX 32,772 NEW
TSLA 26,290 640.6%
IBIT 23,546 NEW
KWEB 22,616 27248.2%
Top Reduces (Value $000, Stocks/ETFs)
AAPL -566,914 -91.1%
MSTR -74,098 -89.8%
BABA -49,017 -100.0%
AMD -48,121 -100.0%
QQQ -39,376 -100.0%
UBER -34,102 -92.2%
SBUX -32,808 -100.0%
HYG -24,088 -100.0%
MSTX -22,981 -93.7%
FTNT -20,994 -100.0%
Instrument mix + QoQ Δ (ex-options)
Derivatives reported exposure ($000): 153,373,636 (98.2% 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