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 | |
|---|---|---|---|---|---|---|
101
Whirlpool
WHR
$3.96B
| $4.99M | ﹤0.01% |
55,312
+15,136
|
|
||
102
Restaurant Brands International
QSR
$21.8B
| $4.98M | ﹤0.01% |
74,760
+7,513
|
|
||
103
PENN Entertainment
PENN
$2.38B
| $4.9M | ﹤0.01% |
300,558
-16,728
|
|
||
104
Fox Class A
FOXA
$28.7B
| $4.89M | ﹤0.01% |
86,365
+65,004
|
|
||
105
Range Resources
RRC
$8.76B
| $4.86M | ﹤0.01% |
121,615
+66,616
|
|
||
106
Tyson Foods
TSN
$18.7B
| $4.84M | ﹤0.01% |
75,819
+6,409
|
|
||
107
Global Payments
GPN
$18.8B
| $4.74M | ﹤0.01% |
48,430
-22,961
|
|
||
108
Wynn Resorts
WYNN
$12.9B
| $4.73M | ﹤0.01% |
56,630
+20,183
|
|
||
109
T-Mobile US
TMUS
$231B
| $4.66M | ﹤0.01% |
17,470
-23,235
|
|
||
110
Autodesk
ADSK
$64.3B
| $4.55M | ﹤0.01% |
+17,371
|
|
||
111
Nu Holdings
NU
$77.2B
| $4.5M | ﹤0.01% |
439,923
+394,149
|
|
||
112
Snowflake
SNOW
$89.7B
| $4.46M | ﹤0.01% |
+30,512
|
|
||
113
Cleveland-Cliffs
CLF
$6B
| $4.29M | ﹤0.01% |
521,623
+302,677
|
|
||
114
Vanguard FTSE Developed Markets ETF
VEA
$178B
| $4.27M | ﹤0.01% |
+83,955
|
|
||
115
Kenvue
KVUE
$31.3B
| $4.23M | ﹤0.01% |
+176,588
|
|
||
116
Sable Offshore Corp
SOC
$576M
| $4.2M | ﹤0.01% |
165,559
+61,891
|
|
||
117
Robinhood
HOOD
$122B
| $4.13M | ﹤0.01% |
+99,373
|
|
||
118
YPF
YPF
$14.6B
| $4.11M | ﹤0.01% |
+117,324
|
|
||
119
Global X Uranium ETF
URA
$5.3B
| $4.1M | ﹤0.01% |
179,071
+89,562
|
|
||
120
NRG Energy
NRG
$32.7B
| $4.04M | ﹤0.01% |
42,380
+4,229
|
|
||
121
Health Care Select Sector SPDR Fund
XLV
$35.8B
| $4.01M | ﹤0.01% |
+27,450
|
|
||
122
Archer Aviation
ACHR
$6.16B
| $3.93M | ﹤0.01% |
552,241
+470,733
|
|
||
123
Fiserv
FI
$34.6B
| $3.9M | ﹤0.01% |
17,673
-26,736
|
|
||
124
Consumer Discretionary Select Sector SPDR Fund
XLY
$24.4B
| $3.9M | ﹤0.01% |
+19,730
|
|
||
125
Advance Auto Parts
AAP
$2.96B
| $3.89M | ﹤0.01% |
99,151
+27,360
|
|