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 |
Amazon
AMZN
|
$107M |
| 2 |
SPDR Gold Trust
GLD
|
$65.8M |
| 3 |
NVIDIA
NVDA
|
$61.6M |
| 4 |
Apple
AAPL
|
$51.2M |
| 5 |
iShares 20+ Year Treasury Bond ETF
TLT
|
$50.9M |
Top Sells
| 1 |
Qualcomm
QCOM
|
$25.2M |
| 2 |
Netflix
NFLX
|
$24.1M |
| 3 |
Walt Disney
DIS
|
$22.2M |
| 4 |
Snowflake
SNOW
|
$17.4M |
| 5 |
Advanced Micro Devices
AMD
|
$17.2M |
Sector Composition
| 1 | Technology | 20.43% |
| 2 | Consumer Discretionary | 15% |
| 3 | Healthcare | 10.19% |
| 4 | Financials | 8.16% |
| 5 | Communication Services | 6.81% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
176
Cheniere Energy
LNG
$51.8B
| $2.56M | ﹤0.01% |
15,423
-4,084
| -21% | -$678K |
|
|
ETRN
177
DELISTED
Equitrans Midstream Corporation Common Stock
ETRN
| $2.54M | ﹤0.01% |
271,150
-64,824
| -19% | -$607K |
|
178
Direxion Daily Gold Miners Index Bull 2X Shares
NUGT
$847M
| $2.53M | ﹤0.01% |
94,949
+72,682
| +326% | +$1.94M |
|
179
American Eagle Outfitters
AEO
$3.26B
| $2.53M | ﹤0.01% |
152,371
+115,418
| +312% | +$1.92M |
|
|
MRTX
180
DELISTED
Mirati Therapeutics, Inc. Common Stock
MRTX
| $2.46M | ﹤0.01% |
56,433
+12,270
| +28% | +$534K |
|
181
T Rowe Price
TROW
$23.8B
| $2.43M | ﹤0.01% |
23,125
+15,900
| +220% | +$1.67M |
|
182
Spectrum Brands
SPB
$1.38B
| $2.42M | ﹤0.01% |
30,856
-77,877
| -72% | -$6.1M |
|
183
argenx
ARGX
$45.9B
| $2.36M | ﹤0.01% |
+4,798
| New | +$2.36M |
|
184
Tower Semiconductor
TSEM
$7.07B
| $2.35M | ﹤0.01% |
95,646
+88,788
| +1,295% | +$2.18M |
|
185
British American Tobacco
BTI
$122B
| $2.34M | ﹤0.01% |
74,480
-126,300
| -63% | -$3.97M |
|
186
Materials Select Sector SPDR Fund
XLB
$5.52B
| $2.32M | ﹤0.01% |
+29,512
| New | +$2.32M |
|
187
UGI
UGI
$7.43B
| $2.3M | ﹤0.01% |
100,198
+98,535
| +5,925% | +$2.27M |
|
188
Direxion Daily Financial Bull 3x Shares
FAS
$2.59B
| $2.3M | ﹤0.01% |
39,118
-23,526
| -38% | -$1.38M |
|
189
Crocs
CROX
$4.72B
| $2.29M | ﹤0.01% |
25,908
-17,353
| -40% | -$1.53M |
|
190
Aramark
ARMK
$10.2B
| $2.28M | ﹤0.01% |
90,886
-1,480
| -2% | -$37.1K |
|
191
ProShares UltraPro S&P 500
UPRO
$4.49B
| $2.26M | ﹤0.01% |
54,983
+3,033
| +6% | +$125K |
|
192
ProShares UltraPro Short S&P 500
SPXU
$523M
| $2.25M | ﹤0.01% |
+37,589
| New | +$2.25M |
|
193
Coca-Cola
KO
$292B
| $2.24M | ﹤0.01% |
+40,076
| New | +$2.24M |
|
194
Baidu
BIDU
$35.1B
| $2.23M | ﹤0.01% |
16,615
-52,951
| -76% | -$7.11M |
|
195
US Bancorp
USB
$75.9B
| $2.23M | ﹤0.01% |
67,332
+21,593
| +47% | +$714K |
|
196
Logitech
LOGI
$15.8B
| $2.22M | ﹤0.01% |
32,233
-14,803
| -31% | -$1.02M |
|
197
Vanguard Information Technology ETF
VGT
$99.9B
| $2.21M | ﹤0.01% |
+5,336
| New | +$2.21M |
|
198
Allstate
ALL
$53.1B
| $2.2M | ﹤0.01% |
+19,755
| New | +$2.2M |
|
199
Coherent
COHR
$15.2B
| $2.19M | ﹤0.01% |
67,177
-33,578
| -33% | -$1.1M |
|
200
STMicroelectronics
STM
$24B
| $2.19M | ﹤0.01% |
50,769
-37,954
| -43% | -$1.64M |
|