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 |
Energy Select Sector SPDR Fund
XLE
|
+$93.9M |
| 2 |
Pfizer
PFE
|
+$89.5M |
| 3 |
Boeing
BA
|
+$66.7M |
| 4 |
Intel
INTC
|
+$60.2M |
| 5 |
Meta Platforms (Facebook)
META
|
+$52.5M |
Top Sells
| 1 |
NVIDIA
NVDA
|
+$146M |
| 2 |
Alphabet (Google) Class A
GOOGL
|
+$109M |
| 3 |
Alibaba
BABA
|
+$81.8M |
| 4 |
Walt Disney
DIS
|
+$80.2M |
| 5 |
Citigroup
C
|
+$55.3M |
Sector Composition
| 1 | Technology | 19.03% |
| 2 | Healthcare | 13.86% |
| 3 | Consumer Discretionary | 12.44% |
| 4 | Industrials | 8.48% |
| 5 | Communication Services | 7.95% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
151
Walmart
WMT
$816B
| $4.55M | ﹤0.01% |
75,652
-467,831
| -86% | -$28.1M |
|
152
MasTec
MTZ
$15.9B
| $4.48M | ﹤0.01% |
48,057
-16,466
| -26% | -$1.54M |
|
153
Best Buy
BBY
$15.2B
| $4.47M | ﹤0.01% |
+54,503
| New | +$4.47M |
|
154
State Street
STT
$32.2B
| $4.46M | ﹤0.01% |
+57,725
| New | +$4.46M |
|
155
Planet Fitness
PLNT
$8.48B
| $4.46M | ﹤0.01% |
71,252
+66,710
| +1,469% | +$4.18M |
|
156
Verizon
VZ
$183B
| $4.39M | ﹤0.01% |
104,591
-63,735
| -38% | -$2.67M |
|
157
Vistra
VST
$71.6B
| $4.39M | ﹤0.01% |
+62,959
| New | +$4.39M |
|
158
Ambac
AMBC
$423M
| $4.37M | ﹤0.01% |
279,725
-53,636
| -16% | -$838K |
|
159
TransDigm Group
TDG
$72.3B
| $4.33M | ﹤0.01% |
3,519
+2,588
| +278% | +$3.19M |
|
160
Jabil
JBL
$24.1B
| $4.28M | ﹤0.01% |
31,974
+27,818
| +669% | +$3.73M |
|
161
Avis
CAR
$5.55B
| $4.11M | ﹤0.01% |
+33,559
| New | +$4.11M |
|
162
Costco
COST
$422B
| $4.09M | ﹤0.01% |
+5,589
| New | +$4.09M |
|
163
Peloton Interactive
PTON
$3.37B
| $4.05M | ﹤0.01% |
+944,287
| New | +$4.05M |
|
164
PepsiCo
PEP
$194B
| $4.04M | ﹤0.01% |
23,084
-57,060
| -71% | -$9.98M |
|
165
Sunrun
RUN
$3.83B
| $4.03M | ﹤0.01% |
+306,114
| New | +$4.03M |
|
166
Stanley Black & Decker
SWK
$11.9B
| $4M | ﹤0.01% |
40,892
+5,853
| +17% | +$573K |
|
167
Roku
ROKU
$15B
| $3.98M | ﹤0.01% |
+60,995
| New | +$3.98M |
|
168
Cummins
CMI
$58.4B
| $3.97M | ﹤0.01% |
+13,483
| New | +$3.97M |
|
169
Apple
AAPL
$3.64T
| $3.91M | ﹤0.01% |
22,785
-30,983
| -58% | -$5.31M |
|
170
US Global Jets ETF
JETS
$818M
| $3.86M | ﹤0.01% |
183,842
+70,557
| +62% | +$1.48M |
|
171
Phillips 66
PSX
$52.4B
| $3.8M | ﹤0.01% |
+23,276
| New | +$3.8M |
|
172
Avantor
AVTR
$8.52B
| $3.8M | ﹤0.01% |
148,497
+103,488
| +230% | +$2.65M |
|
173
DaVita
DVA
$9.31B
| $3.78M | ﹤0.01% |
27,352
-32,834
| -55% | -$4.53M |
|
174
Bilibili
BILI
$11.2B
| $3.76M | ﹤0.01% |
335,704
+267,791
| +394% | +$3M |
|
175
Public Service Enterprise Group
PEG
$40.7B
| $3.75M | ﹤0.01% |
56,201
+46,736
| +494% | +$3.12M |
|