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
|
$102M |
| 2 |
TSMC
TSM
|
$29.6M |
| 3 |
JPMorgan Chase
JPM
|
$21.9M |
| 4 |
Boeing
BA
|
$18.8M |
| 5 |
Target
TGT
|
$13.5M |
Top Sells
| 1 |
SPDR Gold Trust
GLD
|
$94.2M |
| 2 |
Tesla
TSLA
|
$91.2M |
| 3 |
Invesco QQQ Trust
QQQ
|
$81.5M |
| 4 |
NVIDIA
NVDA
|
$60M |
| 5 |
iShares MSCI EAFE ETF
EFA
|
$40.5M |
Sector Composition
| 1 | Consumer Discretionary | 21.73% |
| 2 | Technology | 16.48% |
| 3 | Healthcare | 9.06% |
| 4 | Financials | 8.3% |
| 5 | Communication Services | 7.51% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
176
Dave & Buster's
PLAY
$820M
| $2M | ﹤0.01% |
+132,161
| New | +$2M |
|
177
Sabre
SABR
$675M
| $1.99M | ﹤0.01% |
305,155
+205,746
| +207% | +$1.34M |
|
178
WisdomTree Japan Hedged Equity Fund
DXJ
$3.78B
| $1.98M | ﹤0.01% |
40,460
+30,731
| +316% | +$1.51M |
|
179
United Parks & Resorts
PRKS
$2.99B
| $1.98M | ﹤0.01% |
100,284
+75,069
| +298% | +$1.48M |
|
180
Invesco CurrencyShares British Pound Sterling Trust
FXB
$90.8M
| $1.97M | ﹤0.01% |
+15,785
| New | +$1.97M |
|
181
Aecom
ACM
$16.8B
| $1.97M | ﹤0.01% |
46,992
+31,850
| +210% | +$1.33M |
|
182
Ventas
VTR
$30.9B
| $1.96M | ﹤0.01% |
46,715
+8,577
| +22% | +$360K |
|
183
The Communication Services Select Sector SPDR Fund
XLC
$25.8B
| $1.96M | ﹤0.01% |
+32,992
| New | +$1.96M |
|
184
Bath & Body Works
BBWI
$6.06B
| $1.94M | ﹤0.01% |
75,426
-127,872
| -63% | -$3.29M |
|
185
National Grid
NGG
$69.6B
| $1.94M | ﹤0.01% |
37,352
+33,866
| +971% | +$1.76M |
|
186
Ralph Lauren
RL
$18.9B
| $1.93M | ﹤0.01% |
28,436
+13,173
| +86% | +$895K |
|
187
Li Auto
LI
$24B
| $1.92M | ﹤0.01% |
+110,279
| New | +$1.92M |
|
188
NetEase
NTES
$85B
| $1.91M | ﹤0.01% |
21,005
-10,900
| -34% | -$991K |
|
189
NetApp
NTAP
$23.7B
| $1.91M | ﹤0.01% |
43,460
+30,273
| +230% | +$1.33M |
|
190
Invesco DB Agriculture Fund
DBA
$804M
| $1.88M | ﹤0.01% |
127,391
+47,529
| +60% | +$700K |
|
191
Arrowhead Research
ARWR
$4.02B
| $1.87M | ﹤0.01% |
43,414
-240
| -0.5% | -$10.3K |
|
192
United States Natural Gas Fund
UNG
$615M
| $1.86M | ﹤0.01% |
40,795
+30,032
| +279% | +$1.37M |
|
193
iShares MSCI ACWI ETF
ACWI
$22.1B
| $1.84M | ﹤0.01% |
23,067
+12,440
| +117% | +$994K |
|
194
McKesson
MCK
$85.5B
| $1.8M | ﹤0.01% |
12,076
-4,217
| -26% | -$628K |
|
195
Vroom, Inc. Common Stock
VRM
$140M
| $1.79M | ﹤0.01% |
+432
| New | +$1.79M |
|
196
Marathon Petroleum
MPC
$54.8B
| $1.79M | ﹤0.01% |
60,903
+28,062
| +85% | +$823K |
|
197
Advance Auto Parts
AAP
$3.63B
| $1.78M | ﹤0.01% |
11,624
+117
| +1% | +$18K |
|
198
Apple
AAPL
$3.56T
| $1.78M | ﹤0.01% |
15,411
-28,589
| -65% | -$3.31M |
|
|
GNOG
199
DELISTED
Golden Nugget Online Gaming, Inc. Class A Common Stock
GNOG
| $1.77M | ﹤0.01% |
+123,217
| New | +$1.77M |
|
|
BLUE
200
DELISTED
bluebird bio
BLUE
| $1.74M | ﹤0.01% |
2,497
+973
| +64% | +$680K |
|