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 | |
|---|---|---|---|---|---|---|
1
AMC Entertainment Holdings
AMC
$1.44B
| $82.5M | 0.08% | 1,522,441 +16,645 | +1% | +$902K |
|
|
2
NVIDIA
NVDA
$4.24T
| $48.6M | 0.05% | 60,110 +13,928 | +30% | +$11.3M |
|
3
Carnival Corp
CCL
$43.2B
| $37.6M | 0.04% | 1,428,103 -16,328 | -1% | -$430K |
|
4
Palantir
PLTR
$372B
| $32.2M | 0.03% | 1,303,452 +45,810 | +4% | +$1.13M |
|
5
Micron Technology
MU
$133B
| $30.7M | 0.03% | 383,115 +84,017 | +28% | +$6.73M |
|
6
Intuitive Surgical
ISRG
$170B
| $29.5M | 0.03% | 31,844 +2,625 | +9% | +$2.43M |
|
7
Baidu
BIDU
$32.8B
| $29M | 0.03% | 143,736 -208 | -0.1% | -$41.9K |
|
8
AT&T
T
$209B
| $28.4M | 0.03% | 974,818 -15,499 | -2% | -$451K |
|
9
TSMC
TSM
$1.2T
| $26.6M | 0.02% | 224,816 -17,563 | -7% | -$2.08M |
|
10
Direxion Daily S&P 500 Bull 3x Shares
SPXL
$5.45B
| $25.7M | 0.02% | 237,026 +10,281 | +5% | +$1.11M |
|
11
Intel
INTC
$107B
| $23.5M | 0.02% | 419,762 +31,090 | +8% | +$1.74M |
|
|
LOGC
12
DELISTED
ContextLogic
LOGC
| $21.9M | 0.02% | 1,789,178 +216,719 | +14% | +$2.65M |
|
|
13
Alibaba
BABA
$322B
| $20.8M | 0.02% | 93,649 +34,005 | +57% | +$7.54M |
|
|
14
Advanced Micro Devices
AMD
$264B
| $20.1M | 0.02% | 215,308 +190,043 | +752% | +$17.7M |
|
15
Freeport-McMoran
FCX
$63.7B
| $19.5M | 0.02% | 524,497 -13,737 | -3% | -$509K |
|
|
X
16
DELISTED
US Steel
X
| $19.3M | 0.02% | 801,489 +32,148 | +4% | +$774K |
|
17
Snap
SNAP
$12.1B
| $19.1M | 0.02% | 282,168 +34,598 | +14% | +$2.34M |
|
18
VanEck Semiconductor ETF
SMH
$27B
| $18.8M | 0.02% | 72,678 -98 | -0.1% | -$25.3K |
|
19
Mastercard
MA
$538B
| $18.6M | 0.02% | 50,302 +8,775 | +21% | +$3.25M |
|
20
Strategy Inc Common Stock Class A
MSTR
$94.8B
| $18.3M | 0.02% | 28,179 +199 | +0.7% | +$130K |
|
|
21
NIO
NIO
$14.3B
| $18.2M | 0.02% | 357,931 +150,539 | +73% | +$7.66M |
|
22
Futu Holdings
FUTU
$25.8B
| $17.5M | 0.02% | 108,657 +50 | +0% | +$8.05K |
|
23
Trade Desk
TTD
$26.7B
| $17.1M | 0.02% | 223,382 +28,584 | +15% | +$2.19M |
|
24
American Airlines Group
AAL
$8.82B
| $17.1M | 0.02% | 795,502 +21,454 | +3% | +$461K |
|
25
Plug Power
PLUG
$1.81B
| $16.7M | 0.02% | 500,917 -13,825 | -3% | -$460K |
|