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
|
$32.9M |
| 2 |
Gilead Sciences
GILD
|
$30.1M |
| 3 |
Booking.com
BKNG
|
$29M |
| 4 |
Amazon
AMZN
|
$25.6M |
| 5 |
Baidu
BIDU
|
$16.2M |
Top Sells
Sector Composition
| 1 | Consumer Discretionary | 23.68% |
| 2 | Technology | 19.11% |
| 3 | Healthcare | 14.31% |
| 4 | Energy | 9.3% |
| 5 | Communication Services | 8.24% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
|
1
Apple
AAPL
$3.45T
| $32.9M | 3.99% | +298,288 | New | +$32.9M |
|
|
2
Gilead Sciences
GILD
$140B
| $30.1M | 3.65% | +319,426 | New | +$30.1M |
|
|
3
Booking.com
BKNG
$181B
| $29M | 3.51% | +25,402 | New | +$29M |
|
|
4
Amazon
AMZN
$2.44T
| $25.6M | 3.1% | +82,515 | New | +$25.6M |
|
|
5
Baidu
BIDU
$32.8B
| $16.2M | 1.96% | +70,928 | New | +$16.2M |
|
6
Chipotle Mexican Grill
CMG
$56.5B
| $14.5M | 1.75% | +21,160 | New | +$14.5M |
|
7
Micron Technology
MU
$133B
| $11.5M | 1.39% | +327,779 | New | +$11.5M |
|
8
Microsoft
MSFT
$3.77T
| $8.44M | 1.02% | +181,622 | New | +$8.44M |
|
9
Mastercard
MA
$538B
| $8.27M | 1% | +96,023 | New | +$8.27M |
|
|
TWTR
10
DELISTED
Twitter, Inc.
TWTR
| $7.55M | 0.91% | +210,507 | New | +$7.55M |
|
11
IBM
IBM
$227B
| $6.77M | 0.82% | +42,220 | New | +$6.77M |
|
|
YHOO
12
DELISTED
Yahoo Inc
YHOO
| $4.01M | 0.49% | +79,298 | New | +$4.01M |
|
13
WisdomTree Japan Hedged Equity Fund
DXJ
$3.7B
| $4M | 0.48% | +81,285 | New | +$4M |
|
14
Goldman Sachs
GS
$226B
| $3.79M | 0.46% | +19,551 | New | +$3.79M |
|
15
Meta Platforms (Facebook)
META
$1.86T
| $3.58M | 0.43% | +45,819 | New | +$3.58M |
|
|
TRW
16
DELISTED
TRW AUTOMOTIVE HOLDINGS CORP
TRW
| $3.55M | 0.43% | +34,528 | New | +$3.55M |
|
|
AGN
17
DELISTED
Allergan plc
AGN
| $3.53M | 0.43% | +13,717 | New | +$3.53M |
|
18
Las Vegas Sands
LVS
$39.6B
| $3.49M | 0.42% | +60,051 | New | +$3.49M |
|
19
Devon Energy
DVN
$22.9B
| $3.48M | 0.42% | +56,880 | New | +$3.48M |
|
20
Delta Air Lines
DAL
$40.3B
| $3.38M | 0.41% | +68,778 | New | +$3.38M |
|
21
Coca-Cola
KO
$297B
| $3.21M | 0.39% | +76,030 | New | +$3.21M |
|
22
Dollar General
DG
$23.9B
| $3.18M | 0.39% | +44,960 | New | +$3.18M |
|
23
TripAdvisor
TRIP
$2.02B
| $2.96M | 0.36% | +39,665 | New | +$2.96M |
|
|
CELG
24
DELISTED
Celgene Corp
CELG
| $2.92M | 0.35% | +26,071 | New | +$2.92M |
|
|
VMW
25
DELISTED
VMware, Inc
VMW
| $2.7M | 0.33% | +32,709 | New | +$2.7M |
|