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 |
Invesco QQQ Trust
QQQ
|
$92M |
| 2 |
Walt Disney
DIS
|
$25.4M |
| 3 |
Alphabet (Google) Class A
GOOGL
|
$12.8M |
| 4 |
Baidu
BIDU
|
$12.2M |
| 5 |
RHT
Red Hat Inc
RHT
|
$11.6M |
Top Sells
| 1 |
iShares Russell 2000 ETF
IWM
|
$61.4M |
| 2 |
Amazon
AMZN
|
$59.6M |
| 3 |
Alphabet (Google) Class C
GOOG
|
$35.5M |
| 4 |
Apple
AAPL
|
$19.6M |
| 5 |
Financial Select Sector SPDR Fund
XLF
|
$18.2M |
Sector Composition
| 1 | Communication Services | 16.98% |
| 2 | Technology | 12.42% |
| 3 | Healthcare | 10.02% |
| 4 | Consumer Discretionary | 8.53% |
| 5 | Industrials | 6.02% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
151
Boston Scientific
BSX
$159B
| $1.73M | ﹤0.01% |
44,996
+34,601
| +333% | +$1.33M |
|
152
Royal Caribbean
RCL
$97.8B
| $1.7M | ﹤0.01% |
+14,831
| New | +$1.7M |
|
153
Sea Limited
SE
$112B
| $1.7M | ﹤0.01% |
72,181
+52,602
| +269% | +$1.24M |
|
154
Clean Harbors
CLH
$13.1B
| $1.68M | ﹤0.01% |
23,541
+22,258
| +1,735% | +$1.59M |
|
155
Western Digital
WDC
$31.4B
| $1.68M | ﹤0.01% |
46,264
-15,062
| -25% | -$547K |
|
|
DATA
156
DELISTED
Tableau Software, Inc.
DATA
| $1.67M | ﹤0.01% |
+13,126
| New | +$1.67M |
|
157
Automatic Data Processing
ADP
$122B
| $1.67M | ﹤0.01% |
+10,436
| New | +$1.67M |
|
158
Direxion Daily Energy Bull 2X Shares
ERX
$227M
| $1.66M | ﹤0.01% |
7,295
+4,554
| +166% | +$1.03M |
|
159
Invesco DB US Dollar Index Bullish Fund
UUP
$175M
| $1.65M | ﹤0.01% |
63,438
+57,922
| +1,050% | +$1.51M |
|
|
WWE
160
DELISTED
World Wrestling Entertainment
WWE
| $1.64M | ﹤0.01% |
+18,928
| New | +$1.64M |
|
161
Guidewire Software
GWRE
$18.3B
| $1.64M | ﹤0.01% |
+16,847
| New | +$1.64M |
|
|
HUYA
162
Huya Inc
HUYA
$807M
| $1.63M | ﹤0.01% |
57,898
+46,730
| +418% | +$1.31M |
|
163
Seagate
STX
$39.1B
| $1.62M | ﹤0.01% |
33,827
+8,207
| +32% | +$393K |
|
164
Domino's
DPZ
$15.7B
| $1.62M | ﹤0.01% |
6,272
-3,686
| -37% | -$951K |
|
165
Treehouse Foods
THS
$917M
| $1.61M | ﹤0.01% |
24,908
+15,206
| +157% | +$981K |
|
|
GRUB
166
DELISTED
Just Eat Takeaway.com N.V. American Depositary Shares
GRUB
| $1.61M | ﹤0.01% |
11,556
+5,581
| +93% | +$775K |
|
167
Lockheed Martin
LMT
$107B
| $1.6M | ﹤0.01% |
5,341
+4,126
| +340% | +$1.24M |
|
168
Diamondback Energy
FANG
$41.3B
| $1.55M | ﹤0.01% |
+15,299
| New | +$1.55M |
|
169
Howmet Aerospace
HWM
$72.4B
| $1.55M | ﹤0.01% |
105,923
+21,801
| +26% | +$319K |
|
170
Capri Holdings
CPRI
$2.59B
| $1.55M | ﹤0.01% |
33,868
-20,807
| -38% | -$952K |
|
171
Cameco
CCJ
$33.2B
| $1.54M | ﹤0.01% |
+131,033
| New | +$1.54M |
|
172
Wells Fargo
WFC
$262B
| $1.53M | ﹤0.01% |
+31,571
| New | +$1.53M |
|
173
Tesla
TSLA
$1.09T
| $1.52M | ﹤0.01% |
81,735
+81,060
| +12,009% | +$1.51M |
|
174
Quanta Services
PWR
$56B
| $1.51M | ﹤0.01% |
40,084
+33,594
| +518% | +$1.27M |
|
|
UN
175
DELISTED
Unilever NV New York Registry Shares
UN
| $1.5M | ﹤0.01% |
+25,785
| New | +$1.5M |
|