SIMPLEX TRADING, LLC

Q3 2021 13F-HR Holdings

Location
Chicago, IL
Holdings as of
9/30/2021
Date filed
10/28/2021
Form type
13F-HR
Num holdings
9,899
Total value ($000)
$107,070,579
Net value change ($000)
+3,543,864 (3.4%)
New positions
65
Sold out positions
112
Turnover %
3.4%
Sector allocation + QoQ delta (equities-only)

Snapshot: Change Analysis

Compared to Q2 2021
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)
AMD 17,717 746.6%
NVDA 11,647 31.5%
EFA 10,138 244.5%
MOXIAN BVI INC 7,530 NEW
BABA 7,251 53.6%
NIO 7,185 65.1%
CSCO 5,882 567.8%
GE 5,373 NEW
MU 5,274 20.7%
OLOGBX 4,909 NEW
Top Reduces (Value $000, Stocks/ETFs)
GLD -15,153 -92.4%
AMZN -9,498 -100.0%
SPY -8,761 -100.0%
Moxian, Inc. -7,523 -100.0%
XLK -7,373 -32.8%
GE -5,358 -100.0%
DIA -5,275 -69.8%
Slack Technologies, Inc. -5,154 -100.0%
RBLX -4,763 -38.7%
BYND -3,932 -24.8%
Instrument mix + QoQ Δ (ex-options)
Derivatives reported exposure ($000): 104,254,283 (97.4% 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