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 |
Advanced Micro Devices
AMD
|
$17.7M |
| 2 |
iShares MSCI EAFE ETF
EFA
|
$10.1M |
| 3 |
NIO
NIO
|
$7.66M |
| 4 |
Alibaba
BABA
|
$7.54M |
| 5 |
Micron Technology
MU
|
$6.73M |
Top Sells
| 1 |
NVIDIA
NVDA
|
$101M |
| 2 |
SPDR Gold Trust
GLD
|
$15.2M |
| 3 |
Amazon
AMZN
|
$9.5M |
| 4 |
SPDR S&P 500 ETF Trust
SPY
|
$8.76M |
| 5 |
Technology Select Sector SPDR Fund
XLK
|
$7.41M |
Sector Composition
| 1 | Technology | 18.66% |
| 2 | Consumer Discretionary | 14.99% |
| 3 | Communication Services | 10.06% |
| 4 | Healthcare | 9.68% |
| 5 | Financials | 9.59% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
151
C3.ai
AI
$2.13B
| $4.2M | ﹤0.01% |
65,843
+10,169
| +18% | +$649K |
|
|
TIGR
152
UP Fintech Holding
TIGR
$2.26B
| $4.19M | ﹤0.01% |
159,985
+41,000
| +34% | +$1.07M |
|
153
Honeywell
HON
$137B
| $4.17M | ﹤0.01% |
18,907
+1,415
| +8% | +$312K |
|
|
CMRC
154
Commerce.com, Inc. Series 1 Common Stock
CMRC
$359M
| $4.16M | ﹤0.01% |
64,039
+14,800
| +30% | +$961K |
|
155
Dow Inc
DOW
$16.9B
| $4.15M | ﹤0.01% |
65,398
-114
| -0.2% | -$7.24K |
|
156
Broadcom
AVGO
$1.44T
| $4.14M | ﹤0.01% |
88,240
+9,020
| +11% | +$424K |
|
157
Direxion Daily Energy Bull 2X Shares
ERX
$227M
| $4.05M | ﹤0.01% |
138,724
| – | – |
|
158
Fair Isaac
FICO
$36.5B
| $4.05M | ﹤0.01% |
8,097
| – | – |
|
159
Energy Select Sector SPDR Fund
XLE
$27.2B
| $3.97M | ﹤0.01% |
72,455
+63,880
| +745% | +$3.5M |
|
160
TJX Companies
TJX
$157B
| $3.83M | ﹤0.01% |
56,490
-3,675
| -6% | -$249K |
|
161
Diamondback Energy
FANG
$41.3B
| $3.82M | ﹤0.01% |
38,355
-2,750
| -7% | -$274K |
|
162
Union Pacific
UNP
$132B
| $3.82M | ﹤0.01% |
17,084
-1,337
| -7% | -$299K |
|
163
Stellantis
STLA
$26.2B
| $3.77M | ﹤0.01% |
189,865
+23,820
| +14% | +$472K |
|
164
NextEra Energy, Inc.
NEE
$146B
| $3.72M | ﹤0.01% |
50,099
-1,254
| -2% | -$93K |
|
165
lululemon athletica
LULU
$24.7B
| $3.66M | ﹤0.01% |
10,056
+897
| +10% | +$327K |
|
166
Bank of America
BAC
$375B
| $3.62M | ﹤0.01% |
87,205
+5,328
| +7% | +$221K |
|
167
Skyworks Solutions
SWKS
$11.1B
| $3.56M | ﹤0.01% |
18,828
-2,746
| -13% | -$519K |
|
168
DoorDash
DASH
$106B
| $3.56M | ﹤0.01% |
19,695
+333
| +2% | +$60.1K |
|
169
iShares Global Clean Energy ETF
ICLN
$1.55B
| $3.51M | ﹤0.01% |
149,027
+1,900
| +1% | +$44.7K |
|
170
Sysco
SYY
$39.5B
| $3.49M | ﹤0.01% |
45,477
+600
| +1% | +$46.1K |
|
171
Clean Energy Fuels
CLNE
$559M
| $3.45M | ﹤0.01% |
330,674
+1,296
| +0.4% | +$13.5K |
|
172
Apple
AAPL
$3.56T
| $3.39M | ﹤0.01% |
24,700
| – | – |
|
173
Qorvo
QRVO
$8.54B
| $3.37M | ﹤0.01% |
17,438
-1,678
| -9% | -$324K |
|
174
Berkshire Hathaway Class B
BRK.B
$1.09T
| $3.36M | ﹤0.01% |
11,976
+3,544
| +42% | +$993K |
|
175
Blackrock
BLK
$172B
| $3.35M | ﹤0.01% |
3,809
+39
| +1% | +$34.3K |
|