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 |
NVIDIA
NVDA
|
$29.3M |
| 2 |
Industrial Select Sector SPDR Fund
XLI
|
$23.1M |
| 3 |
iShares Russell 2000 ETF
IWM
|
$18M |
| 4 |
Netflix
NFLX
|
$17.4M |
| 5 |
iShares 20+ Year Treasury Bond ETF
TLT
|
$14M |
Top Sells
| 1 |
Invesco QQQ Trust
QQQ
|
$120M |
| 2 |
SPDR S&P 500 ETF Trust
SPY
|
$41.3M |
| 3 |
Walt Disney
DIS
|
$26.9M |
| 4 |
Alphabet (Google) Class A
GOOGL
|
$13.8M |
| 5 |
Johnson & Johnson
JNJ
|
$11.3M |
Sector Composition
| 1 | Technology | 16.22% |
| 2 | Communication Services | 16.19% |
| 3 | Healthcare | 11.36% |
| 4 | Industrials | 9.74% |
| 5 | Consumer Discretionary | 8.61% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
|
1
Alphabet (Google) Class C
GOOG
$2.58T
| $65.4M | 0.18% | 60,517 +11,282 | +23% | +$12.2M |
|
|
2
Netflix
NFLX
$513B
| $53.3M | 0.15% | 145,027 +47,334 | +48% | +$17.4M |
|
|
3
NVIDIA
NVDA
$4.24T
| $36.7M | 0.1% | 223,281 +178,554 | +399% | +$29.3M |
|
|
4
iShares Russell 2000 ETF
IWM
$67B
| $36.4M | 0.1% | 234,093 +116,007 | +98% | +$18M |
|
|
5
Industrial Select Sector SPDR Fund
XLI
$23.3B
| $24.2M | 0.07% | 312,726 +297,790 | +1,994% | +$23.1M |
|
6
Salesforce
CRM
$245B
| $14.4M | 0.04% | 94,873 +28,897 | +44% | +$4.38M |
|
|
7
iShares 20+ Year Treasury Bond ETF
TLT
$47.8B
| $14M | 0.04% | +105,724 | New | +$14M |
|
8
iShares MSCI Brazil ETF
EWZ
$5.45B
| $14M | 0.04% | 320,145 +34,437 | +12% | +$1.51M |
|
9
Elevance Health
ELV
$71.8B
| $12.3M | 0.03% | 43,725 +40,197 | +1,139% | +$11.3M |
|
10
RTX Corp
RTX
$212B
| $11.2M | 0.03% | 86,060 +66,019 | +329% | +$8.6M |
|
|
RHT
11
DELISTED
Red Hat Inc
RHT
| $10.5M | 0.03% | 55,893 -8,632 | -13% | -$1.62M |
|
12
Spotify
SPOT
$140B
| $10.4M | 0.03% | 71,264 +51,519 | +261% | +$7.53M |
|
13
Constellation Brands
STZ
$28.5B
| $9.45M | 0.03% | 47,994 +21,514 | +81% | +$4.24M |
|
14
JPMorgan Chase
JPM
$829B
| $9.41M | 0.03% | 84,205 +50,727 | +152% | +$5.67M |
|
15
Bristol-Myers Squibb
BMY
$96B
| $9.15M | 0.03% | 201,734 +87,641 | +77% | +$3.97M |
|
16
Analog Devices
ADI
$124B
| $8.59M | 0.02% | 76,148 +46,564 | +157% | +$5.26M |
|
17
McDonald's
MCD
$224B
| $8.22M | 0.02% | +39,584 | New | +$8.22M |
|
18
Lockheed Martin
LMT
$106B
| $8.17M | 0.02% | 22,476 +17,135 | +321% | +$6.23M |
|
19
GE Aerospace
GE
$292B
| $8.1M | 0.02% | 771,831 +113,038 | +17% | +$1.19M |
|
20
Energy Select Sector SPDR Fund
XLE
$27.6B
| $8.08M | 0.02% | 126,823 +29,554 | +30% | +$1.88M |
|
21
Pfizer
PFE
$141B
| $7.77M | 0.02% | 179,410 +118,203 | +193% | +$5.12M |
|
22
ProShares Ultra VIX Short-Term Futures ETF
UVXY
$690M
| $7.46M | 0.02% | +236,947 | New | +$7.46M |
|
|
XYZ
23
Block, Inc.
XYZ
$48.5B
| $6.81M | 0.02% | 93,952 -59,873 | -39% | -$4.34M |
|
24
Chipotle Mexican Grill
CMG
$56.5B
| $6.64M | 0.02% | 9,057 +8,957 | +8,957% | +$6.56M |
|
25
Humana
HUM
$36.5B
| $6.41M | 0.02% | 24,176 +9,869 | +69% | +$2.62M |
|