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 20+ Year Treasury Bond ETF
TLT
|
$278M |
| 2 |
Alphabet (Google) Class A
GOOGL
|
$84.4M |
| 3 |
NVIDIA
NVDA
|
$76.9M |
| 4 |
TSMC
TSM
|
$74.9M |
| 5 |
Amazon
AMZN
|
$53.5M |
Top Sells
| 1 |
Apple
AAPL
|
$497M |
| 2 |
Strategy Inc Common Stock Class A
MSTR
|
$73.7M |
| 3 |
Alibaba
BABA
|
$49M |
| 4 |
Advanced Micro Devices
AMD
|
$48.1M |
| 5 |
Uber
UBER
|
$41.8M |
Sector Composition
| 1 | Technology | 22.9% |
| 2 | Consumer Discretionary | 12.26% |
| 3 | Healthcare | 9.52% |
| 4 | Communication Services | 8.42% |
| 5 | Financials | 7.07% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
151
Stellantis
STLA
$26.2B
| $2.93M | ﹤0.01% |
261,541
-166,440
| -39% | -$1.87M |
|
152
Global X Silver Miners ETF NEW
SIL
$2.92B
| $2.93M | ﹤0.01% |
74,282
+56,464
| +317% | +$2.23M |
|
153
Teck Resources
TECK
$16.8B
| $2.93M | ﹤0.01% |
80,305
-34,544
| -30% | -$1.26M |
|
154
J.M. Smucker
SJM
$12B
| $2.89M | ﹤0.01% |
+24,414
| New | +$2.89M |
|
|
155
Uber
UBER
$190B
| $2.87M | ﹤0.01% |
39,322
-573,536
| -94% | -$41.8M |
|
156
Las Vegas Sands
LVS
$36.9B
| $2.85M | ﹤0.01% |
73,740
-136,696
| -65% | -$5.28M |
|
157
Cenovus Energy
CVE
$28.7B
| $2.85M | ﹤0.01% |
204,709
-17,344
| -8% | -$241K |
|
158
Wendy's
WEN
$1.97B
| $2.79M | ﹤0.01% |
190,786
+172,119
| +922% | +$2.52M |
|
159
Caesars Entertainment
CZR
$5.48B
| $2.79M | ﹤0.01% |
111,524
+43,980
| +65% | +$1.1M |
|
160
SoundHound AI
SOUN
$5.81B
| $2.78M | ﹤0.01% |
341,988
+267,257
| +358% | +$2.17M |
|
161
Under Armour
UAA
$2.2B
| $2.77M | ﹤0.01% |
443,647
+262,106
| +144% | +$1.64M |
|
162
Trip.com Group
TCOM
$47.6B
| $2.77M | ﹤0.01% |
43,503
+11,668
| +37% | +$742K |
|
163
Marathon Petroleum
MPC
$54.8B
| $2.71M | ﹤0.01% |
+18,626
| New | +$2.71M |
|
164
iShares China Large-Cap ETF
FXI
$6.65B
| $2.7M | ﹤0.01% |
+75,398
| New | +$2.7M |
|
165
Grab
GRAB
$21B
| $2.7M | ﹤0.01% |
+596,018
| New | +$2.7M |
|
|
WBA
166
DELISTED
Walgreens Boots Alliance
WBA
| $2.68M | ﹤0.01% |
240,150
-770,749
| -76% | -$8.61M |
|
167
Lincoln National
LNC
$7.98B
| $2.67M | ﹤0.01% |
74,477
+47,401
| +175% | +$1.7M |
|
168
Kyndryl
KD
$7.57B
| $2.67M | ﹤0.01% |
+85,013
| New | +$2.67M |
|
169
Sportradar
SRAD
$9.14B
| $2.65M | ﹤0.01% |
122,431
+110,693
| +943% | +$2.39M |
|
170
QuantumScape
QS
$4.44B
| $2.61M | ﹤0.01% |
627,249
-276,694
| -31% | -$1.15M |
|
171
Banc of California
BANC
$2.65B
| $2.6M | ﹤0.01% |
+183,055
| New | +$2.6M |
|
172
Direxion Daily TSLA Bull 2X Shares
TSLL
$6.33B
| $2.59M | ﹤0.01% |
272,379
-192,755
| -41% | -$1.83M |
|
173
Enlight Renewable Energy
ENLT
$3.82B
| $2.59M | ﹤0.01% |
160,319
-3,289
| -2% | -$53.1K |
|
174
ACM Research
ACMR
$1.76B
| $2.57M | ﹤0.01% |
110,128
-31,308
| -22% | -$731K |
|
175
TripAdvisor
TRIP
$2.05B
| $2.56M | ﹤0.01% |
180,714
+105,199
| +139% | +$1.49M |
|