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 |
Alibaba
BABA
|
$48.9M |
| 2 |
Boeing
BA
|
$25.8M |
| 3 |
SPDR Gold Trust
GLD
|
$18.2M |
| 4 |
Biogen
BIIB
|
$15.8M |
| 5 |
FedEx
FDX
|
$13.6M |
Top Sells
| 1 |
Alphabet (Google) Class C
GOOG
|
$62.1M |
| 2 |
iShares Russell 2000 ETF
IWM
|
$36.4M |
| 3 |
Industrial Select Sector SPDR Fund
XLI
|
$17.5M |
| 4 |
Netflix
NFLX
|
$16.3M |
| 5 |
iShares 20+ Year Treasury Bond ETF
TLT
|
$14.6M |
Sector Composition
| 1 | Consumer Discretionary | 16.74% |
| 2 | Technology | 16.32% |
| 3 | Healthcare | 12.17% |
| 4 | Industrials | 12.14% |
| 5 | Communication Services | 7.05% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
126
iRobot
IRBT
$100M
| $1.65M | ﹤0.01% |
+26,815
| New | +$1.65M |
|
|
GWPH
127
DELISTED
GW Pharmaceuticals Plc American Depositary Shares
GWPH
| $1.64M | ﹤0.01% |
+14,300
| New | +$1.64M |
|
|
VIAB
128
DELISTED
Viacom Inc. Class B
VIAB
| $1.63M | ﹤0.01% |
67,877
+43,810
| +182% | +$1.05M |
|
129
TransDigm Group
TDG
$72B
| $1.62M | ﹤0.01% |
+3,114
| New | +$1.62M |
|
130
ProShares UltraPro QQQ
TQQQ
$26B
| $1.62M | ﹤0.01% |
+26,286
| New | +$1.62M |
|
131
CoStar Group
CSGP
$37.2B
| $1.6M | ﹤0.01% |
2,700
-2,184
| -45% | -$1.3M |
|
|
CS
132
DELISTED
Credit Suisse Group
CS
| $1.6M | ﹤0.01% |
130,842
+63,575
| +95% | +$776K |
|
133
Masco
MAS
$15.1B
| $1.59M | ﹤0.01% |
38,189
+3,908
| +11% | +$163K |
|
134
ProShares UltraShort S&P500
SDS
$447M
| $1.59M | ﹤0.01% |
53,777
+22,208
| +70% | +$655K |
|
135
Ball Corp
BALL
$13.6B
| $1.58M | ﹤0.01% |
+21,709
| New | +$1.58M |
|
136
Clearway Energy Class C
CWEN
$3.38B
| $1.58M | ﹤0.01% |
86,483
+47,087
| +120% | +$859K |
|
|
CHL
137
DELISTED
China Mobile Limited
CHL
| $1.56M | ﹤0.01% |
+37,651
| New | +$1.56M |
|
138
CONMED
CNMD
$1.64B
| $1.53M | ﹤0.01% |
15,908
+15,781
| +12,426% | +$1.52M |
|
139
Edgewell Personal Care
EPC
$1.1B
| $1.53M | ﹤0.01% |
47,019
+39,699
| +542% | +$1.29M |
|
140
Universal Insurance Holdings
UVE
$703M
| $1.53M | ﹤0.01% |
50,899
+50,757
| +35,744% | +$1.52M |
|
141
Williams Companies
WMB
$70.5B
| $1.51M | ﹤0.01% |
+62,900
| New | +$1.51M |
|
142
Restaurant Brands International
QSR
$20.5B
| $1.5M | ﹤0.01% |
21,053
+3,546
| +20% | +$252K |
|
|
ABMD
143
DELISTED
Abiomed Inc
ABMD
| $1.49M | ﹤0.01% |
8,374
+1,530
| +22% | +$272K |
|
144
CSX Corp
CSX
$60.2B
| $1.49M | ﹤0.01% |
+21,489
| New | +$1.49M |
|
145
Logitech
LOGI
$15.4B
| $1.48M | ﹤0.01% |
+36,295
| New | +$1.48M |
|
|
KEM
146
DELISTED
KEMET Corporation
KEM
| $1.47M | ﹤0.01% |
80,604
+39,904
| +98% | +$725K |
|
147
Vodafone
VOD
$28.2B
| $1.46M | ﹤0.01% |
73,435
-8,381
| -10% | -$167K |
|
148
iShares Core S&P Mid-Cap ETF
IJH
$99.4B
| $1.46M | ﹤0.01% |
+7,556
| New | +$1.46M |
|
149
Ralph Lauren
RL
$19B
| $1.46M | ﹤0.01% |
+15,243
| New | +$1.46M |
|
150
Altria Group
MO
$112B
| $1.45M | ﹤0.01% |
+35,525
| New | +$1.45M |
|