Simplex Trading Portfolio holdings
Simplex Trading, founded in 2004 and headquartered in Chicago, Illinois, is a technology-driven proprietary trading firm specializing in market-making and liquidity provision, primarily in U.S. equity options and futures options. Leveraging advanced proprietary software and data-driven analysis, the firm optimizes trading strategies and develops innovative solutions to capitalize on financial market opportunities, maintaining a competitive edge through automation and a collaborative team of technologists and traders. With a workforce exceeding 300 and led by CEO Erik Swanson since 2014, Simplex operates with a low-ego, high-intelligence culture, focusing on minimal bureaucracy and rapid execution, while also making strategic venture capital investments in fintech startups. Recognized as a top workplace in Chicago by Built In’s 2025 awards, Simplex continues to evolve, blending cutting-edge technology with a commitment to market efficiency and growth.
Top Buys
| Rank | Stock | Value |
|---|---|---|
| 1 |
Alibaba
BABA
|
+$39.9M |
| 2 |
Invesco QQQ Trust
QQQ
|
+$39M |
| 3 |
Mastercard
MA
|
+$31.3M |
| 4 |
Apple
AAPL
|
+$25.3M |
| 5 |
Alphabet (Google) Class C
GOOG
|
+$25.1M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
JPMorgan Chase
JPM
|
+$52.8M |
| 2 |
TSMC
TSM
|
+$43M |
| 3 |
Amazon
AMZN
|
+$24.7M |
| 4 |
iShares Silver Trust
SLV
|
+$24.2M |
| 5 |
Netflix
NFLX
|
+$21.1M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Consumer Discretionary | 0.65% |
| 2 | Technology | 0.37% |
| 3 | Healthcare | 0.33% |
| 4 | Industrials | 0.21% |
| 5 | Communication Services | 0.19% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
2126
PUT
Varonis Systems
VRNS
$5.25B
| $1.44M | ﹤0.01% |
264
+165
| +167% | +$7.16K |
|
2127
W.P. Carey
WPC
$17.1B
| $1.44M | ﹤0.01% |
+20,803
| New | +$1.39M |
|
|
FLIR
2128
DELISTED
FLIR Systems, Inc. (DE) Common Stock
FLIR
| $1.44M | ﹤0.01% |
32,747
+19,112
| +140% | +$738K |
|
|
BRSL
2129
CALL
Brightstar Lottery PLC
BRSL
$1.91B
| $1.43M | ﹤0.01% |
847
+206
| +32% | +$2.52K |
|
2130
CALL
Cheniere Energy
LNG
$56.5B
| $1.43M | ﹤0.01% |
239
-262
| -52% | -$14.1K |
|
|
GMS
2131
CALL
DELISTED
GMS Inc
GMS
| $1.43M | ﹤0.01% |
470
+437
| +1,324% | +$12.2K |
|
|
SUM
2132
DELISTED
Summit Materials, Inc. Class A Common Stock
SUM
| $1.43M | ﹤0.01% |
72,512
+57,908
| +397% | +$1.08M |
|
2133
CALL
Nutrien
NTR
$32.7B
| $1.43M | ﹤0.01% |
297
-1,242
| -81% | -$54.9K |
|
|
SRG
2134
PUT
Seritage Growth Properties
SRG
$130M
| $1.43M | ﹤0.01% |
974
+227
| +30% | +$3.36K |
|
2135
Hershey
HSY
$35.4B
| $1.43M | ﹤0.01% |
9,368
+4,041
| +76% | +$598K |
|
2136
Humana
HUM
$46.7B
| $1.43M | ﹤0.01% |
+3,479
| New | +$1.45M |
|
2137
PUT
National Beverage
FIZZ
$2.87B
| $1.43M | ﹤0.01% |
336
-666
| -66% | -$28.6K |
|
2138
PUT
JFrog
FROG
$9.71B
| $1.43M | ﹤0.01% |
227
+183
| +416% | +$12.8K |
|
2139
CALL
Franklin Resources
BEN
$16.9B
| $1.42M | ﹤0.01% |
570
+266
| +88% | +$5.94K |
|
2140
Celsius Holdings
CELH
$6.93B
| $1.42M | ﹤0.01% |
84,786
+33,120
| +64% | +$331K |
|
2141
PUT
TC Energy
TRP
$73.5B
| $1.42M | ﹤0.01% |
349
+76
| +28% | +$3.24K |
|
2142
CALL
Lifetime Brands
LCUT
$199M
| $1.42M | ﹤0.01% |
+934
| New | +$11.7K |
|
2143
PUT
Ameriprise Financial
AMP
$46.8B
| $1.42M | ﹤0.01% |
73
-16
| -18% | -$2.86K |
|
2144
CALL
Pultegroup
PHM
$24.5B
| $1.42M | ﹤0.01% |
329
+4
| +1% | +$177 |
|
2145
CALL
Thor Industries
THO
$3.99B
| $1.41M | ﹤0.01% |
152
-398
| -72% | -$37.3K |
|
2146
CALL
AAR Corp
AIR
$5.15B
| $1.41M | ﹤0.01% |
390
+375
| +2,500% | +$9.95K |
|
2147
Ameresco
AMRC
$1.15B
| $1.41M | ﹤0.01% |
27,046
+26,131
| +2,856% | +$1.13M |
|
2148
PUT
NCR Voyix
VYX
$1.06B
| $1.41M | ﹤0.01% |
611
+249
| +69% | +$4.13K |
|
2149
CALL
Visteon
VC
$2.77B
| $1.41M | ﹤0.01% |
112
+91
| +433% | +$9.59K |
|
2150
CALL
Live Oak Bancshares
LOB
$1.95B
| $1.4M | ﹤0.01% |
296
+267
| +921% | +$10.7K |
|
Similar funds
Simplex Trading's Q4 2020 Portfolio in Review
As of Q4 2020, Simplex Trading held 9,568 positions worth $77.2B, up 5% from $73.5B the previous quarter. Its ten largest holdings account for 42% of the portfolio.
Simplex Trading's Q4 2020 filing shows 1,711 new, 3,402 increased, 3,106 reduced and 1,157 closed positions. Its largest new stake was Alibaba: 143,630 shares worth $33.4M. The largest sale was JPMorgan Chase, an estimated $52.8M.
By sector, the portfolio is most concentrated in Consumer Discretionary at 0.65% of assets, up from 0.53% a quarter earlier, followed by Technology and Healthcare.
- Simplex Trading's largest Q4 2020 buy was Alibaba: 143,630 shares worth $33.4M.
- Simplex Trading added most to Invesco QQQ Trust in Q4 2020, an estimated $39M increase.
- Simplex Trading's biggest Q4 2020 reduction was JPMorgan Chase, cutting an estimated $52.8M.
- Simplex Trading fully exited Target in Q4 2020, selling an estimated $14.3M.
- Simplex Trading's ten largest holdings make up 42% of its $77.2B portfolio in Q4 2020.
- Simplex Trading opened 1,711 new positions and closed 1,157 in Q4 2020.
- Simplex Trading's portfolio value rose 5% quarter-over-quarter to $77.2B.
Based on Simplex Trading's 13F filing for Q4 2020, filed 2 Feb 2021.