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
|
$80M |
| 2 |
iShares 20+ Year Treasury Bond ETF
TLT
|
$45.3M |
| 3 |
Alphabet (Google) Class C
GOOG
|
$38.8M |
| 4 |
Amazon
AMZN
|
$38.6M |
| 5 |
Tesla
TSLA
|
$36M |
Top Sells
| 1 |
Alibaba
BABA
|
$46.4M |
| 2 |
Boeing
BA
|
$29.8M |
| 3 |
SPDR Gold Trust
GLD
|
$18.2M |
| 4 |
Biogen
BIIB
|
$15.8M |
| 5 |
NVIDIA
NVDA
|
$14.3M |
Sector Composition
| 1 | Technology | 22.73% |
| 2 | Consumer Discretionary | 17.54% |
| 3 | Communication Services | 10.03% |
| 4 | Healthcare | 9.29% |
| 5 | Industrials | 5.63% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
|
1
Apple
AAPL
$3.45T
| $80M | 0.18% | +272,579 | New | +$80M |
|
|
2
Alphabet (Google) Class C
GOOG
$2.58T
| $51.6M | 0.11% | 38,584 +28,998 | +303% | +$38.8M |
|
|
3
Amazon
AMZN
$2.44T
| $46M | 0.1% | 24,871 +20,910 | +528% | +$38.6M |
|
|
4
iShares 20+ Year Treasury Bond ETF
TLT
$47.8B
| $45.8M | 0.1% | 337,745 +334,545 | +10,455% | +$45.3M |
|
|
5
Tesla
TSLA
$1.08T
| $37.5M | 0.08% | 89,656 +86,053 | +2,388% | +$36M |
|
6
Netflix
NFLX
$513B
| $35M | 0.08% | 108,219 +23,971 | +28% | +$7.76M |
|
7
Invesco QQQ Trust
QQQ
$364B
| $29.6M | 0.06% | +139,094 | New | +$29.6M |
|
|
8
NVIDIA
NVDA
$4.24T
| $29.2M | 0.06% | 124,101 -60,950 | -33% | -$14.3M |
|
9
AbbVie
ABBV
$372B
| $23M | 0.05% | +259,224 | New | +$23M |
|
|
10
Alibaba
BABA
$322B
| $20.4M | 0.04% | 96,177 -218,634 | -69% | -$46.4M |
|
11
Beyond Meat
BYND
$192M
| $18.3M | 0.04% | +242,178 | New | +$18.3M |
|
12
iShares MSCI EAFE ETF
EFA
$66B
| $17.5M | 0.04% | +251,515 | New | +$17.5M |
|
13
Chipotle Mexican Grill
CMG
$56.5B
| $15.6M | 0.03% | 18,686 +13,749 | +278% | +$11.5M |
|
14
Broadcom
AVGO
$1.4T
| $13.7M | 0.03% | 43,507 +21,538 | +98% | +$6.81M |
|
15
Advanced Micro Devices
AMD
$264B
| $13.6M | 0.03% | +296,533 | New | +$13.6M |
|
16
Qualcomm
QCOM
$173B
| $13.2M | 0.03% | +150,028 | New | +$13.2M |
|
17
Union Pacific
UNP
$133B
| $12M | 0.03% | 66,495 +60,422 | +995% | +$10.9M |
|
18
Home Depot
HD
$405B
| $11.9M | 0.03% | 54,615 +45,243 | +483% | +$9.88M |
|
19
VanEck Semiconductor ETF
SMH
$27B
| $10.8M | 0.02% | +76,471 | New | +$10.8M |
|
20
SPDR S&P 500 ETF Trust
SPY
$658B
| $10.7M | 0.02% | +33,147 | New | +$10.7M |
|
21
Fidelity National Information Services
FIS
$36.5B
| $9.72M | 0.02% | 69,878 -9,725 | -12% | -$1.35M |
|
22
IBM
IBM
$227B
| $9.44M | 0.02% | 70,451 +57,401 | +440% | +$7.69M |
|
23
Micron Technology
MU
$133B
| $9.36M | 0.02% | +173,975 | New | +$9.36M |
|
24
Gilead Sciences
GILD
$140B
| $8.93M | 0.02% | 137,397 +66,439 | +94% | +$4.32M |
|
25
United States Natural Gas Fund
UNG
$610M
| $8.86M | 0.02% | +525,751 | New | +$8.86M |
|