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 | +$278M | |
| 2 | +$84.4M | |
| 3 | +$76.9M | |
| 4 |
TSMC
TSM
|
+$74.9M |
| 5 |
Amazon
AMZN
|
+$53.5M |
Top Sells
| 1 | +$497M | |
| 2 | +$73.7M | |
| 3 | +$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 |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
151
Stellantis
STLA
$29.3B
| $2.93M | ﹤0.01% |
261,541
-166,440
|
|
||
152
Global X Silver Miners ETF NEW
SIL
$3.07B
| $2.93M | ﹤0.01% |
74,282
+56,464
|
|
||
153
Teck Resources
TECK
$20B
| $2.92M | ﹤0.01% |
80,305
-34,544
|
|
||
154
J.M. Smucker
SJM
$11B
| $2.89M | ﹤0.01% |
+24,414
|
|
||
|
155
Uber
UBER
$196B
| $2.87M | ﹤0.01% |
39,322
-573,536
|
|
||
156
Las Vegas Sands
LVS
$42.2B
| $2.85M | ﹤0.01% |
73,740
-136,696
|
|
||
157
Cenovus Energy
CVE
$29.5B
| $2.85M | ﹤0.01% |
204,709
-17,344
|
|
||
158
Wendy's
WEN
$1.69B
| $2.79M | ﹤0.01% |
190,786
+172,119
|
|
||
159
Caesars Entertainment
CZR
$4.07B
| $2.79M | ﹤0.01% |
111,524
+43,980
|
|
||
160
SoundHound AI
SOUN
$6.19B
| $2.78M | ﹤0.01% |
341,988
+267,257
|
|
||
161
Under Armour
UAA
$1.93B
| $2.77M | ﹤0.01% |
443,647
+262,106
|
|
||
162
Trip.com Group
TCOM
$45.7B
| $2.77M | ﹤0.01% |
43,503
+11,668
|
|
||
163
Marathon Petroleum
MPC
$57.4B
| $2.71M | ﹤0.01% |
+18,626
|
|
||
164
iShares China Large-Cap ETF
FXI
$6.77B
| $2.7M | ﹤0.01% |
+75,398
|
|
||
165
Grab
GRAB
$23.5B
| $2.7M | ﹤0.01% |
+596,018
|
|
||
|
WBA
166
DELISTED
Walgreens Boots Alliance
WBA
| $2.68M | ﹤0.01% |
240,150
-770,749
|
|
||
167
Lincoln National
LNC
$7.73B
| $2.67M | ﹤0.01% |
74,477
+47,401
|
|
||
168
Kyndryl
KD
$5.9B
| $2.67M | ﹤0.01% |
+85,013
|
|
||
169
Sportradar
SRAD
$6.93B
| $2.65M | ﹤0.01% |
122,431
+110,693
|
|
||
170
QuantumScape
QS
$10.1B
| $2.61M | ﹤0.01% |
627,249
-276,694
|
|
||
171
Banc of California
BANC
$2.63B
| $2.6M | ﹤0.01% |
+183,055
|
|
||
172
Direxion Daily TSLA Bull 2X Shares
TSLL
$8.05B
| $2.59M | ﹤0.01% |
272,379
-192,755
|
|
||
173
Enlight Renewable Energy
ENLT
$4.63B
| $2.59M | ﹤0.01% |
160,319
-3,289
|
|
||
174
ACM Research
ACMR
$2.05B
| $2.57M | ﹤0.01% |
110,128
-31,308
|
|
||
175
TripAdvisor
TRIP
$1.75B
| $2.56M | ﹤0.01% |
180,714
+105,199
|
|