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 |
Apple
AAPL
|
$586M |
| 2 |
Strategy Inc Common Stock Class A
MSTR
|
$82.5M |
| 3 |
Intel
INTC
|
$40.4M |
| 4 |
Invesco QQQ Trust
QQQ
|
$39.4M |
| 5 |
Uber
UBER
|
$36.3M |
Top Sells
| 1 |
NVIDIA
NVDA
|
$130M |
| 2 |
Pinduoduo
PDD
|
$95.7M |
| 3 |
Boeing
BA
|
$56.2M |
| 4 |
KraneShares CSI China Internet ETF
KWEB
|
$40.7M |
| 5 |
Microsoft
MSFT
|
$40.5M |
Sector Composition
| 1 | Technology | 34.29% |
| 2 | Consumer Discretionary | 11.38% |
| 3 | Healthcare | 9.65% |
| 4 | Financials | 6.33% |
| 5 | Communication Services | 5.52% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
126
Lamb Weston
LW
$7.88B
| $4.95M | ﹤0.01% |
74,129
-236,993
| -76% | -$15.8M |
|
127
Consumers Staples Select Sector SPDR Fund
XLP
$15.8B
| $4.94M | ﹤0.01% |
62,843
+13,320
| +27% | +$1.05M |
|
128
ARK Innovation ETF
ARKK
$7.43B
| $4.93M | ﹤0.01% |
86,790
+14,717
| +20% | +$835K |
|
129
XPO
XPO
$14.8B
| $4.91M | ﹤0.01% |
37,406
+3,094
| +9% | +$406K |
|
130
Macy's
M
$4.42B
| $4.89M | ﹤0.01% |
289,095
-17,865
| -6% | -$302K |
|
131
Petrobras
PBR
$79.3B
| $4.76M | ﹤0.01% |
369,820
+103,017
| +39% | +$1.32M |
|
132
Jabil
JBL
$21.8B
| $4.7M | ﹤0.01% |
32,646
+4,623
| +16% | +$665K |
|
133
QuantumScape
QS
$4.4B
| $4.69M | ﹤0.01% |
903,943
+408,472
| +82% | +$2.12M |
|
134
Teck Resources
TECK
$16.5B
| $4.65M | ﹤0.01% |
114,849
+1,231
| +1% | +$49.9K |
|
135
Steel Dynamics
STLD
$19.1B
| $4.64M | ﹤0.01% |
40,720
-43,443
| -52% | -$4.95M |
|
|
AMTM
136
Amentum Holdings, Inc.
AMTM
$6.05B
| $4.63M | ﹤0.01% |
+219,981
| New | +$4.63M |
|
137
Western Digital
WDC
$29.8B
| $4.62M | ﹤0.01% |
77,468
+47,326
| +157% | +$2.82M |
|
138
Whirlpool
WHR
$5B
| $4.6M | ﹤0.01% |
40,176
-13,127
| -25% | -$1.5M |
|
139
Alexandria Real Estate Equities
ARE
$13.9B
| $4.6M | ﹤0.01% |
47,131
+44,062
| +1,436% | +$4.3M |
|
140
iShares US Aerospace & Defense ETF
ITA
$9.25B
| $4.55M | ﹤0.01% |
+31,305
| New | +$4.55M |
|
141
Constellation Brands
STZ
$25.8B
| $4.54M | ﹤0.01% |
20,544
+5,062
| +33% | +$1.12M |
|
142
Norwegian Cruise Line
NCLH
$11.5B
| $4.42M | ﹤0.01% |
171,842
-14,278
| -8% | -$367K |
|
143
DexCom
DXCM
$30.9B
| $4.41M | ﹤0.01% |
56,687
+29,958
| +112% | +$2.33M |
|
144
Tapestry
TPR
$21.7B
| $4.41M | ﹤0.01% |
+67,428
| New | +$4.41M |
|
145
Halliburton
HAL
$18.4B
| $4.4M | ﹤0.01% |
161,970
+130,074
| +408% | +$3.54M |
|
146
American Airlines Group
AAL
$8.87B
| $4.39M | ﹤0.01% |
252,011
-210,031
| -45% | -$3.66M |
|
147
Canadian Pacific Kansas City
CP
$70.4B
| $4.38M | ﹤0.01% |
+60,569
| New | +$4.38M |
|
148
Restaurant Brands International
QSR
$20.5B
| $4.38M | ﹤0.01% |
67,247
+51,092
| +316% | +$3.33M |
|
149
CAVA Group
CAVA
$7.64B
| $4.35M | ﹤0.01% |
+38,526
| New | +$4.35M |
|
150
Mercado Libre
MELI
$120B
| $4.34M | ﹤0.01% |
+2,552
| New | +$4.34M |
|