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
|
$44.9M |
| 2 |
iShares Russell 2000 ETF
IWM
|
$31.7M |
| 3 |
TWX
Time Warner Inc
TWX
|
$26.1M |
| 4 |
Booking.com
BKNG
|
$21.7M |
| 5 |
Alphabet (Google) Class C
GOOG
|
$18.2M |
Top Sells
| 1 |
SPDR S&P 500 ETF Trust
SPY
|
$42.8M |
| 2 |
Amgen
AMGN
|
$32.3M |
| 3 |
Baidu
BIDU
|
$21.9M |
| 4 |
Micron Technology
MU
|
$21.2M |
| 5 |
Alphabet (Google) Class A
GOOGL
|
$17.7M |
Sector Composition
| 1 | Consumer Discretionary | 21.41% |
| 2 | Technology | 19.71% |
| 3 | Communication Services | 17.68% |
| 4 | Healthcare | 6.08% |
| 5 | Financials | 5.75% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
|
1
Amazon
AMZN
$2.44T
| $163M | 6.66% | 169,734 +46,678 | +38% | +$44.9M |
|
|
2
Alphabet (Google) Class C
GOOG
$2.58T
| $69.5M | 2.84% | 72,513 +18,982 | +35% | +$18.2M |
|
3
NVIDIA
NVDA
$4.24T
| $68.2M | 2.79% | 381,689 +40,384 | +12% | +$7.22M |
|
4
Apple
AAPL
$3.45T
| $57.5M | 2.35% | 373,388 +34,937 | +10% | +$5.38M |
|
|
5
Micron Technology
MU
$133B
| $50.9M | 2.08% | 1,294,758 -539,954 | -29% | -$21.2M |
|
|
6
Alphabet (Google) Class A
GOOGL
$2.57T
| $41.1M | 1.68% | 42,176 -18,216 | -30% | -$17.7M |
|
7
Meta Platforms (Facebook)
META
$1.86T
| $37.9M | 1.55% | 221,591 -50,756 | -19% | -$8.67M |
|
|
8
iShares Russell 2000 ETF
IWM
$67B
| $31.7M | 1.3% | +214,170 | New | +$31.7M |
|
9
Netflix
NFLX
$513B
| $29.6M | 1.21% | 163,133 -61,662 | -27% | -$11.2M |
|
|
TWX
10
DELISTED
Time Warner Inc
TWX
| $27.7M | 1.13% | 270,770 +254,534 | +1,568% | +$26.1M |
|
|
11
Booking.com
BKNG
$181B
| $27.3M | 1.11% | 14,911 +11,871 | +390% | +$21.7M |
|
12
NetEase
NTES
$86.2B
| $25.1M | 1.03% | 95,256 +45,012 | +90% | +$11.9M |
|
13
iShares 20+ Year Treasury Bond ETF
TLT
$47.8B
| $21.1M | 0.86% | 169,292 +99,539 | +143% | +$12.4M |
|
14
Boeing
BA
$177B
| $17.9M | 0.73% | +70,408 | New | +$17.9M |
|
15
Tesla
TSLA
$1.08T
| $16.1M | 0.66% | 47,185 +46,696 | +9,549% | +$15.9M |
|
16
JD.com
JD
$44.1B
| $16M | 0.66% | 420,138 +302,949 | +259% | +$11.6M |
|
17
McDonald's
MCD
$224B
| $15.8M | 0.64% | 100,617 +91,745 | +1,034% | +$14.4M |
|
18
Alibaba
BABA
$322B
| $15.6M | 0.64% | 90,380 +83,819 | +1,278% | +$14.5M |
|
19
DuPont de Nemours
DD
$32.2B
| $15.5M | 0.63% | +223,400 | New | +$15.5M |
|
20
Deere & Co
DE
$129B
| $13.5M | 0.55% | +107,688 | New | +$13.5M |
|
21
Qualcomm
QCOM
$173B
| $13M | 0.53% | 251,292 -161,122 | -39% | -$8.35M |
|
22
JPMorgan Chase
JPM
$829B
| $12.8M | 0.52% | +133,924 | New | +$12.8M |
|
23
Constellation Brands
STZ
$28.5B
| $12.3M | 0.5% | 61,786 -20,483 | -25% | -$4.09M |
|
24
IBM
IBM
$227B
| $11.4M | 0.46% | +78,264 | New | +$11.4M |
|
25
PepsiCo
PEP
$204B
| $10.4M | 0.42% | 93,367 +54,421 | +140% | +$6.06M |
|