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
| 1 |
Amazon
AMZN
|
$158M |
| 2 |
Invesco QQQ Trust
QQQ
|
$69.1M |
| 3 |
Meta Platforms (Facebook)
META
|
$57.4M |
| 4 |
Citigroup
C
|
$23.4M |
| 5 |
Goldman Sachs
GS
|
$23M |
Top Sells
| 1 |
Apple
AAPL
|
$49.8M |
| 2 |
Berkshire Hathaway Class B
BRK.B
|
$43.2M |
| 3 |
SPDR Dow Jones Industrial Average ETF Trust
DIA
|
$42.2M |
| 4 |
Micron Technology
MU
|
$26.1M |
| 5 |
Adobe
ADBE
|
$21M |
Sector Composition
| 1 | Consumer Discretionary | 20.63% |
| 2 | Communication Services | 16.3% |
| 3 | Technology | 12.42% |
| 4 | Industrials | 9.24% |
| 5 | Healthcare | 8.11% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
151
Newmont
NEM
$82.3B
| $2.08M | 0.01% |
+69,002
| New | +$2.08M |
|
152
FIVE9
FIVN
$2.03B
| $2.07M | 0.01% |
+47,421
| New | +$2.07M |
|
|
CRC
153
DELISTED
California Resources Corporation
CRC
| $2.06M | 0.01% |
42,431
+20,622
| +95% | +$1M |
|
|
FDC
154
DELISTED
First Data Corporation
FDC
| $2.05M | 0.01% |
83,765
-28,197
| -25% | -$690K |
|
|
APC
155
DELISTED
Anadarko Petroleum
APC
| $2.02M | 0.01% |
+30,003
| New | +$2.02M |
|
|
TSRO
156
DELISTED
TESARO, Inc.
TSRO
| $2M | 0.01% |
51,276
-9,945
| -16% | -$388K |
|
157
Vertex Pharmaceuticals
VRTX
$102B
| $1.99M | 0.01% |
10,342
+8,430
| +441% | +$1.62M |
|
|
CIT
158
DELISTED
CIT Group Inc.
CIT
| $1.99M | 0.01% |
38,523
-40,478
| -51% | -$2.09M |
|
159
Stitch Fix
SFIX
$732M
| $1.97M | 0.01% |
45,096
+37,893
| +526% | +$1.66M |
|
160
Molina Healthcare
MOH
$9.26B
| $1.97M | 0.01% |
13,260
+11,824
| +823% | +$1.76M |
|
161
Aflac
AFL
$58.1B
| $1.95M | 0.01% |
41,490
-5,152
| -11% | -$242K |
|
162
Howmet Aerospace
HWM
$72.4B
| $1.95M | 0.01% |
115,697
+109,699
| +1,829% | +$1.85M |
|
|
ULTI
163
DELISTED
Ultimate Software Group Inc
ULTI
| $1.94M | 0.01% |
6,022
+1,560
| +35% | +$503K |
|
|
CDK
164
DELISTED
CDK Global, Inc.
CDK
| $1.93M | 0.01% |
+30,928
| New | +$1.93M |
|
165
Campbell Soup
CPB
$9.74B
| $1.92M | 0.01% |
52,485
+15,147
| +41% | +$555K |
|
|
HES
166
DELISTED
Hess
HES
| $1.92M | 0.01% |
+26,816
| New | +$1.92M |
|
167
Newell Brands
NWL
$2.64B
| $1.9M | 0.01% |
93,681
+82,825
| +763% | +$1.68M |
|
168
iQIYI
IQ
$2.61B
| $1.89M | 0.01% |
69,774
+27,235
| +64% | +$737K |
|
169
LyondellBasell Industries
LYB
$17.5B
| $1.89M | 0.01% |
18,418
+15,577
| +548% | +$1.6M |
|
170
Viatris
VTRS
$12B
| $1.88M | 0.01% |
+51,447
| New | +$1.88M |
|
|
ATHN
171
DELISTED
Athenahealth, Inc.
ATHN
| $1.87M | 0.01% |
14,025
-2,079
| -13% | -$278K |
|
172
iShares Russell 1000 Value ETF
IWD
$63.7B
| $1.83M | 0.01% |
14,425
+8,529
| +145% | +$1.08M |
|
173
Skyworks Solutions
SWKS
$11.1B
| $1.82M | 0.01% |
20,032
-8,725
| -30% | -$791K |
|
174
Moody's
MCO
$89.6B
| $1.8M | 0.01% |
10,758
+10,471
| +3,648% | +$1.75M |
|
175
Nektar Therapeutics
NKTR
$684M
| $1.8M | 0.01% |
1,963
-229
| -10% | -$209K |
|