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 | |
|---|---|---|---|---|---|---|
26
Citigroup
C
$178B
| $15.8M | 0.01% | 221,927 +23,891 | +12% | +$1.7M |
|
27
Boeing
BA
$177B
| $15.3M | 0.01% | 64,018 +18,371 | +40% | +$4.4M |
|
|
28
Technology Select Sector SPDR Fund
XLK
$83.9B
| $15.1M | 0.01% | 102,311 -50,100 | -33% | -$7.41M |
|
29
Tilray
TLRY
$1.52B
| $14.4M | 0.01% | 805,932 +104,771 | +15% | +$1.87M |
|
|
30
iShares MSCI EAFE ETF
EFA
$66B
| $14.3M | 0.01% | 180,666 +128,083 | +244% | +$10.1M |
|
31
Novavax
NVAX
$1.21B
| $14M | 0.01% | 64,940 -927 | -1% | -$200K |
|
32
S&P Global
SPGI
$167B
| $14M | 0.01% | 33,892 +826 | +2% | +$340K |
|
33
Coinbase
COIN
$78.2B
| $13.9M | 0.01% | 57,372 +2,769 | +5% | +$669K |
|
34
Procter & Gamble
PG
$368B
| $13.4M | 0.01% | 99,354 -1,341 | -1% | -$181K |
|
35
Delta Air Lines
DAL
$40.3B
| $12.6M | 0.01% | 283,866 -8,595 | -3% | -$380K |
|
36
Airbnb
ABNB
$79.9B
| $12.3M | 0.01% | 80,580 +30,201 | +60% | +$4.62M |
|
37
Wynn Resorts
WYNN
$13.2B
| $12.1M | 0.01% | 98,719 -2,034 | -2% | -$249K |
|
38
XPeng
XPEV
$20B
| $12M | 0.01% | 275,686 -42,975 | -13% | -$1.88M |
|
39
Rocket Companies
RKT
$37.4B
| $12M | 0.01% | 631,646 +25,160 | +4% | +$478K |
|
40
Beyond Meat
BYND
$192M
| $11.9M | 0.01% | 77,971 -22,737 | -23% | -$3.48M |
|
41
Intuit
INTU
$186B
| $11.9M | 0.01% | 24,257 +60 | +0.2% | +$29.5K |
|
|
SPLK
42
DELISTED
Splunk Inc
SPLK
| $11.9M | 0.01% | 84,331 -1,668 | -2% | -$235K |
|
43
VanEck Oil Services ETF
OIH
$886M
| $11.4M | 0.01% | 49,872 -38 | -0.1% | -$8.66K |
|
44
fuboTV
FUBO
$1.21B
| $10.9M | 0.01% | 352,545 +137,712 | +64% | +$4.26M |
|
45
Applied Materials
AMAT
$128B
| $10.7M | 0.01% | 77,413 -6,769 | -8% | -$934K |
|
46
Pinduoduo
PDD
$171B
| $10.4M | 0.01% | 85,321 +14,608 | +21% | +$1.78M |
|
47
Upstart Holdings
UPST
$7.05B
| $10M | 0.01% | 80,962 -3,249 | -4% | -$403K |
|
48
iShares Silver Trust
SLV
$19.6B
| $9.8M | 0.01% | 406,274 -59,336 | -13% | -$1.43M |
|
49
Utilities Select Sector SPDR Fund
XLU
$20.9B
| $9.61M | 0.01% | 150,410 -6,041 | -4% | -$386K |
|
50
Generac Holdings
GNRC
$10.9B
| $9.33M | 0.01% | 22,571 | – | – |
|