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 |
Goldman Sachs
GS
|
$38.4M |
| 2 |
Micron Technology
MU
|
$23.7M |
| 3 |
NVIDIA
NVDA
|
$23.6M |
| 4 |
iShares 20+ Year Treasury Bond ETF
TLT
|
$21.7M |
| 5 |
Wells Fargo
WFC
|
$20.4M |
Top Sells
| 1 |
Citigroup
C
|
$21.6M |
| 2 |
Apple
AAPL
|
$17.2M |
| 3 |
Invesco QQQ Trust
QQQ
|
$13.3M |
| 4 |
Eli Lilly
LLY
|
$9.69M |
| 5 |
Mastercard
MA
|
$8.27M |
Sector Composition
| 1 | Technology | 14.2% |
| 2 | Communication Services | 13.46% |
| 3 | Consumer Discretionary | 12.76% |
| 4 | Healthcare | 12.43% |
| 5 | Financials | 10.75% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
101
Incyte
INCY
$16.5B
| $3.11M | 0.13% | 23,262 +21,346 | +1,114% | +$2.85M |
|
102
BWX Technologies
BWXT
$14.8B
| $3.11M | 0.13% | 65,273 +43,892 | +205% | +$2.09M |
|
|
X
103
DELISTED
US Steel
X
| $3.1M | 0.13% | 91,592 +46,720 | +104% | +$1.58M |
|
104
VanEck Junior Gold Miners ETF
GDXJ
$6.6B
| $3.08M | 0.13% | 85,642 +46,551 | +119% | +$1.67M |
|
105
SPDR Gold Trust
GLD
$107B
| $3.06M | 0.13% | 25,799 -9,225 | -26% | -$1.09M |
|
106
Constellation Brands
STZ
$28.5B
| $2.94M | 0.13% | 18,128 -17,250 | -49% | -$2.8M |
|
107
ASML
ASML
$292B
| $2.91M | 0.13% | 21,910 +15,128 | +223% | +$2.01M |
|
|
TWTR
108
DELISTED
Twitter, Inc.
TWTR
| $2.89M | 0.13% | 193,459 +179,461 | +1,282% | +$2.68M |
|
109
Palo Alto Networks
PANW
$127B
| $2.83M | 0.12% | 25,122 -50,122 | -67% | -$5.65M |
|
110
Salesforce
CRM
$245B
| $2.78M | 0.12% | 33,728 -10,203 | -23% | -$842K |
|
|
FNSR
111
DELISTED
Finisar Corp
FNSR
| $2.77M | 0.12% | 101,183 +82,197 | +433% | +$2.25M |
|
|
GAP
112
The Gap, Inc.
GAP
$8.21B
| $2.76M | 0.12% | 113,519 +82,191 | +262% | +$2M |
|
113
American International
AIG
$45.1B
| $2.76M | 0.12% | +44,145 | New | +$2.76M |
|
114
Comcast
CMCSA
$125B
| $2.73M | 0.12% | +72,662 | New | +$2.73M |
|
|
ATVI
115
DELISTED
Activision Blizzard Inc.
ATVI
| $2.71M | 0.12% | +54,376 | New | +$2.71M |
|
116
WisdomTree Japan Hedged Equity Fund
DXJ
$3.7B
| $2.65M | 0.11% | 52,411 +16,076 | +44% | +$814K |
|
117
Assured Guaranty
AGO
$3.91B
| $2.65M | 0.11% | +71,377 | New | +$2.65M |
|
118
Citizens Financial Group
CFG
$22.6B
| $2.64M | 0.11% | +76,341 | New | +$2.64M |
|
|
CLVS
119
DELISTED
Clovis Oncology, Inc.
CLVS
| $2.63M | 0.11% | 41,373 +32,246 | +353% | +$2.05M |
|
120
GE Aerospace
GE
$292B
| $2.63M | 0.11% | +88,292 | New | +$2.63M |
|
121
Philips
PHG
$26.2B
| $2.6M | 0.11% | 81,074 +35,661 | +79% | +$1.14M |
|
122
Deutsche Bank
DB
$67.7B
| $2.6M | 0.11% | +151,303 | New | +$2.6M |
|
123
Kellanova
K
$27.6B
| $2.59M | 0.11% | 35,624 +32,486 | +1,035% | +$2.36M |
|
124
Dick's Sporting Goods
DKS
$17B
| $2.57M | 0.11% | +52,829 | New | +$2.57M |
|
125
Vulcan Materials
VMC
$38.5B
| $2.56M | 0.11% | +21,263 | New | +$2.56M |
|