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 |
iShares Russell 2000 ETF
IWM
|
$27.5M |
| 2 |
SPDR Dow Jones Industrial Average ETF Trust
DIA
|
$16.3M |
| 3 |
Walt Disney
DIS
|
$13.9M |
| 4 |
iShares MSCI Emerging Markets ETF
EEM
|
$10.4M |
| 5 |
Gilead Sciences
GILD
|
$10.4M |
Top Sells
| 1 |
Alphabet (Google) Class C
GOOG
|
$95.3M |
| 2 |
Apple
AAPL
|
$21.1M |
| 3 |
Meta Platforms (Facebook)
META
|
$20M |
| 4 |
IBM
IBM
|
$13.4M |
| 5 |
Baidu
BIDU
|
$12.1M |
Sector Composition
| 1 | Healthcare | 13.63% |
| 2 | Communication Services | 9.81% |
| 3 | Consumer Discretionary | 9.7% |
| 4 | Technology | 9.67% |
| 5 | Financials | 9.48% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
101
Allstate
ALL
$53.9B
| $1.29M | 0.09% |
22,083
+4,410
| +25% | +$257K |
|
102
Canadian Pacific Kansas City
CP
$70.4B
| $1.26M | 0.09% |
44,025
-4,190
| -9% | -$120K |
|
103
Halliburton
HAL
$18.4B
| $1.26M | 0.09% |
+35,782
| New | +$1.26M |
|
104
Comcast
CMCSA
$125B
| $1.26M | 0.09% |
+44,364
| New | +$1.26M |
|
105
lululemon athletica
LULU
$23.8B
| $1.25M | 0.09% |
24,699
+5,196
| +27% | +$263K |
|
106
WisdomTree Japan Hedged Equity Fund
DXJ
$3.72B
| $1.25M | 0.09% |
25,674
-27,033
| -51% | -$1.32M |
|
107
Assured Guaranty
AGO
$3.89B
| $1.22M | 0.09% |
48,708
-2,470
| -5% | -$61.7K |
|
|
SPLK
108
DELISTED
Splunk Inc
SPLK
| $1.18M | 0.09% |
21,301
+2,871
| +16% | +$159K |
|
109
Oracle
ORCL
$628B
| $1.16M | 0.09% |
+32,117
| New | +$1.16M |
|
110
IPG Photonics
IPGP
$3.42B
| $1.16M | 0.08% |
15,232
+13,958
| +1,096% | +$1.06M |
|
|
TFCFA
111
DELISTED
Twenty-First Century Fox, Inc. Class A
TFCFA
| $1.15M | 0.08% |
42,809
+37,618
| +725% | +$1.01M |
|
112
Tapestry
TPR
$21.7B
| $1.14M | 0.08% |
39,490
+28,841
| +271% | +$834K |
|
113
Emerson Electric
EMR
$72.9B
| $1.11M | 0.08% |
+25,085
| New | +$1.11M |
|
114
Grifois
GRFS
$6.53B
| $1.09M | 0.08% |
71,592
+45,042
| +170% | +$685K |
|
115
PayPal
PYPL
$66.5B
| $1.06M | 0.08% |
+34,284
| New | +$1.06M |
|
116
Mettler-Toledo International
MTD
$26.1B
| $1.05M | 0.08% |
3,699
+3,611
| +4,103% | +$1.03M |
|
117
Under Armour
UAA
$2.17B
| $1.05M | 0.08% |
+21,773
| New | +$1.05M |
|
|
AY
118
DELISTED
Atlantica Sustainable Infrastructure plc Ordinary Shares
AY
| $1.04M | 0.08% |
63,091
+62,240
| +7,314% | +$1.03M |
|
|
DD
119
DELISTED
Du Pont De Nemours E I
DD
| $1.04M | 0.08% |
+21,543
| New | +$1.04M |
|
120
ProShares UltraPro QQQ
TQQQ
$26B
| $1.01M | 0.07% |
277,224
+109,464
| +65% | +$398K |
|
121
Ulta Beauty
ULTA
$23.8B
| $1M | 0.07% |
6,152
+5,357
| +674% | +$874K |
|
122
First Solar
FSLR
$21.6B
| $996K | 0.07% |
23,308
-19,347
| -45% | -$827K |
|
|
ETP
123
DELISTED
Energy Transfer Partners L.p.
ETP
| $994K | 0.07% |
24,224
+16,094
| +198% | +$660K |
|
124
AB InBev
BUD
$116B
| $965K | 0.07% |
+9,081
| New | +$965K |
|
125
eBay
EBAY
$41.2B
| $959K | 0.07% |
39,275
-15,105
| -28% | -$369K |
|