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 |
Amazon
AMZN
|
$102M |
| 2 |
TSMC
TSM
|
$29.6M |
| 3 |
JPMorgan Chase
JPM
|
$21.9M |
| 4 |
Boeing
BA
|
$18.8M |
| 5 |
Target
TGT
|
$13.5M |
Top Sells
| 1 |
SPDR Gold Trust
GLD
|
$94.2M |
| 2 |
Tesla
TSLA
|
$91.2M |
| 3 |
Invesco QQQ Trust
QQQ
|
$81.5M |
| 4 |
NVIDIA
NVDA
|
$60M |
| 5 |
iShares MSCI EAFE ETF
EFA
|
$40.5M |
Sector Composition
| 1 | Consumer Discretionary | 21.73% |
| 2 | Technology | 16.48% |
| 3 | Healthcare | 9.06% |
| 4 | Financials | 8.3% |
| 5 | Communication Services | 7.51% |
