SIMPLEX TRADING, LLC

Q4 2020 13F-HR Holdings

Location
Chicago, IL
Holdings as of
12/31/2020
Date filed
2/2/2021
Form type
13F-HR
Num holdings
8,849
Total value ($000)
$77,177,776
Net value change ($000)
+3,661,366 (5.0%)
New positions
934
Sold out positions
726
Turnover %
36.4%
Sector allocation + QoQ delta (equities-only)
Prev filing: 10/14/2020 Next filing: 4/26/2021 SEC filing

Snapshot: Change Analysis

Compared to Q3 2020
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)
QQQ 45,011 176.2%
MA 33,606 NEW
BABA 33,427 NEW
TSLA 32,318 57.5%
AAPL 28,157 1578.3%
GOOGL 27,986 277.5%
SPY 24,267 472.9%
WMT 19,182 879.1%
XPEV 16,504 1842.0%
GILD 15,461 NEW
Top Reduces (Value $000, Stocks/ETFs)
JPM -45,219 -97.9%
TSM -36,194 -94.0%
CSCO -28,298 -100.0%
SLV -23,047 -99.6%
AMZN -21,678 -21.1%
NFLX -20,782 -99.8%
GLD -19,515 -82.0%
XOM -17,333 -99.8%
TGT -13,476 -100.0%
BA -13,218 -44.1%
Instrument mix + QoQ Δ (ex-options)
Derivatives reported exposure ($000): 74,994,539 (97.2% 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