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 |
Tesla
TSLA
|
$27.1M |
| 2 |
Netflix
NFLX
|
$24.7M |
| 3 |
SPDR Dow Jones Industrial Average ETF Trust
DIA
|
$20.1M |
| 4 |
TWX
Time Warner Inc
TWX
|
$18.3M |
| 5 |
Alibaba
BABA
|
$14.8M |
Top Sells
| 1 |
Amazon
AMZN
|
$71.9M |
| 2 |
Micron Technology
MU
|
$47.7M |
| 3 |
Alphabet (Google) Class C
GOOG
|
$26.3M |
| 4 |
Boeing
BA
|
$21M |
| 5 |
Citigroup
C
|
$19.6M |
Sector Composition
| 1 | Consumer Discretionary | 15.64% |
| 2 | Communication Services | 14.16% |
| 3 | Technology | 12.46% |
| 4 | Financials | 10.94% |
| 5 | Healthcare | 10.33% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
101
VanEck Semiconductor ETF
SMH
$26.6B
| $2.1M | 0.09% |
+40,330
| New | +$2.1M |
|
102
Comcast
CMCSA
$125B
| $2.09M | 0.09% |
61,117
-37,780
| -38% | -$1.29M |
|
|
RHT
103
DELISTED
Red Hat Inc
RHT
| $2.07M | 0.09% |
13,831
+5,629
| +69% | +$841K |
|
104
Cheniere Energy
LNG
$52.6B
| $2.01M | 0.09% |
37,634
+16,598
| +79% | +$887K |
|
|
ATVI
105
DELISTED
Activision Blizzard Inc.
ATVI
| $1.97M | 0.09% |
29,168
+16,361
| +128% | +$1.1M |
|
|
LSI
106
DELISTED
Life Storage, Inc.
LSI
| $1.94M | 0.09% |
34,913
+20,361
| +140% | +$1.13M |
|
107
NVIDIA
NVDA
$4.15T
| $1.93M | 0.08% |
333,640
-2,813,280
| -89% | -$16.3M |
|
108
Automatic Data Processing
ADP
$121B
| $1.91M | 0.08% |
16,825
-2,826
| -14% | -$321K |
|
109
Vulcan Materials
VMC
$38.1B
| $1.9M | 0.08% |
16,618
-6,624
| -29% | -$756K |
|
110
Nektar Therapeutics
NKTR
$543M
| $1.89M | 0.08% |
+1,184
| New | +$1.89M |
|
111
FirstEnergy
FE
$25.1B
| $1.88M | 0.08% |
55,408
+44,999
| +432% | +$1.53M |
|
112
Sociedad Química y Minera de Chile
SQM
$12.5B
| $1.85M | 0.08% |
37,567
+22,960
| +157% | +$1.13M |
|
113
NextEra Energy, Inc.
NEE
$148B
| $1.85M | 0.08% |
+45,196
| New | +$1.85M |
|
|
STMP
114
DELISTED
Stamps.com, Inc.
STMP
| $1.83M | 0.08% |
+9,098
| New | +$1.83M |
|
115
Papa John's
PZZA
$1.58B
| $1.82M | 0.08% |
31,746
+1,873
| +6% | +$107K |
|
116
VanEck Junior Gold Miners ETF
GDXJ
$6.91B
| $1.8M | 0.08% |
+55,916
| New | +$1.8M |
|
117
Teva Pharmaceuticals
TEVA
$21.5B
| $1.77M | 0.08% |
+103,831
| New | +$1.77M |
|
118
Molson Coors Class B
TAP
$9.85B
| $1.75M | 0.08% |
23,263
+13,187
| +131% | +$993K |
|
119
Lowe's Companies
LOW
$146B
| $1.74M | 0.08% |
19,815
-103,925
| -84% | -$9.12M |
|
120
PayPal
PYPL
$66.5B
| $1.72M | 0.08% |
22,667
-127,306
| -85% | -$9.65M |
|
|
RDS.A
121
DELISTED
Royal Dutch Shell PLC ADS Class A
RDS.A
| $1.71M | 0.08% |
26,781
-27,940
| -51% | -$1.78M |
|
122
Campbell Soup
CPB
$10.1B
| $1.7M | 0.07% |
+39,163
| New | +$1.7M |
|
123
Intel
INTC
$105B
| $1.69M | 0.07% |
+32,513
| New | +$1.69M |
|
124
Bausch Health
BHC
$2.72B
| $1.69M | 0.07% |
+105,920
| New | +$1.69M |
|
125
Twilio
TWLO
$16.1B
| $1.67M | 0.07% |
43,840
+18,460
| +73% | +$704K |
|