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 |
Advanced Micro Devices
AMD
|
$17.7M |
| 2 |
NVIDIA
NVDA
|
$11.3M |
| 3 |
iShares MSCI EAFE ETF
EFA
|
$10.1M |
| 4 |
NIO
NIO
|
$7.66M |
| 5 |
Alibaba
BABA
|
$7.54M |
Top Sells
| 1 |
SPDR Gold Trust
GLD
|
$15.2M |
| 2 |
Amazon
AMZN
|
$9.5M |
| 3 |
SPDR S&P 500 ETF Trust
SPY
|
$8.76M |
| 4 |
Technology Select Sector SPDR Fund
XLK
|
$7.41M |
| 5 |
SPDR Dow Jones Industrial Average ETF Trust
DIA
|
$5.3M |
Sector Composition
| 1 | Technology | 18.66% |
| 2 | Consumer Discretionary | 14.99% |
| 3 | Communication Services | 10.06% |
| 4 | Healthcare | 9.68% |
| 5 | Financials | 9.59% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
76
iShares iBoxx $ High Yield Corporate Bond ETF
HYG
$17.8B
| $7.46M | 0.01% | 84,844 +23,537 | +38% | +$2.07M |
|
77
Take-Two Interactive
TTWO
$43B
| $7.42M | 0.01% | 41,478 +4,791 | +13% | +$857K |
|
78
Walmart
WMT
$774B
| $7.33M | 0.01% | 52,635 +6,687 | +15% | +$932K |
|
79
VanEck Gold Miners ETF
GDX
$19B
| $7.33M | 0.01% | 215,742 -6,376 | -3% | -$217K |
|
80
Radware
RDWR
$1.08B
| $7.17M | 0.01% | 231,359 +100 | +0% | +$3.1K |
|
|
B
81
Barrick Mining Corporation
B
$45.4B
| $7.12M | 0.01% | 345,983 -1,200 | -0.3% | -$24.7K |
|
82
ConocoPhillips
COP
$124B
| $7.12M | 0.01% | 113,164 -481 | -0.4% | -$30.2K |
|
83
Blackstone
BX
$134B
| $7.1M | 0.01% | 73,127 +8,413 | +13% | +$817K |
|
84
Cisco
CSCO
$274B
| $6.92M | 0.01% | 129,467 +109,904 | +562% | +$5.87M |
|
|
ATVI
85
DELISTED
Activision Blizzard Inc.
ATVI
| $6.9M | 0.01% | 73,444 -12,927 | -15% | -$1.21M |
|
86
SoFi Technologies
SOFI
$30.6B
| $6.8M | 0.01% | 372,678 +18,794 | +5% | +$343K |
|
87
Shopify
SHOP
$184B
| $6.75M | 0.01% | 4,632 +187 | +4% | +$273K |
|
88
Southwest Airlines
LUV
$17.3B
| $6.73M | 0.01% | 124,961 -7,193 | -5% | -$387K |
|
89
Las Vegas Sands
LVS
$39.6B
| $6.7M | 0.01% | 126,147 -4,110 | -3% | -$218K |
|
90
Chewy
CHWY
$16.9B
| $6.7M | 0.01% | 83,102 -6,910 | -8% | -$557K |
|
91
Norwegian Cruise Line
NCLH
$11.2B
| $6.68M | 0.01% | 226,519 -25,321 | -10% | -$747K |
|
92
Mercado Libre
MELI
$125B
| $6.61M | 0.01% | 4,278 -800 | -16% | -$1.24M |
|
93
Coca-Cola
KO
$297B
| $6.61M | 0.01% | 122,431 -5,200 | -4% | -$281K |
|
94
Alcoa
AA
$8.33B
| $6.56M | 0.01% | 177,578 +48,022 | +37% | +$1.77M |
|
95
United States Oil Fund
USO
$967M
| $6.54M | 0.01% | 129,293 +1,450 | +1% | +$73.4K |
|
96
Bristol-Myers Squibb
BMY
$96B
| $6.53M | 0.01% | 98,097 -70 | -0.1% | -$4.66K |
|
97
Tencent Music
TME
$37.8B
| $6.5M | 0.01% | 420,355 | – | – |
|
98
Direxion Daily Small Cap Bull 3x Shares
TNA
$2.18B
| $6.43M | 0.01% | 64,011 +1,134 | +2% | +$114K |
|
99
Moderna
MRNA
$9.37B
| $6.37M | 0.01% | 27,081 -3,694 | -12% | -$868K |
|
100
Newmont
NEM
$81.7B
| $6.36M | 0.01% | 101,222 +1,592 | +2% | +$100K |
|