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 |
Invesco QQQ Trust
QQQ
|
$92M |
| 2 |
Walt Disney
DIS
|
$25.4M |
| 3 |
Alphabet (Google) Class A
GOOGL
|
$12.8M |
| 4 |
Baidu
BIDU
|
$12.2M |
| 5 |
RHT
Red Hat Inc
RHT
|
$11.6M |
Top Sells
| 1 |
iShares Russell 2000 ETF
IWM
|
$61.4M |
| 2 |
Amazon
AMZN
|
$59.6M |
| 3 |
Alphabet (Google) Class C
GOOG
|
$35.5M |
| 4 |
Apple
AAPL
|
$19.6M |
| 5 |
Financial Select Sector SPDR Fund
XLF
|
$18.2M |
Sector Composition
| 1 | Communication Services | 16.98% |
| 2 | Technology | 12.42% |
| 3 | Healthcare | 10.02% |
| 4 | Consumer Discretionary | 8.53% |
| 5 | Industrials | 6.02% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
|
1
Invesco QQQ Trust
QQQ
$364B
| $120M | 0.33% | 667,812 +512,278 | +329% | +$92M |
|
|
2
Alphabet (Google) Class C
GOOG
$2.58T
| $57.8M | 0.16% | 49,235 -30,222 | -38% | -$35.5M |
|
3
SPDR S&P 500 ETF Trust
SPY
$658B
| $41.1M | 0.11% | 145,460 -18,239 | -11% | -$5.15M |
|
4
Netflix
NFLX
$513B
| $34.8M | 0.1% | 97,693 +530 | +0.5% | +$189K |
|
|
5
Walt Disney
DIS
$213B
| $25.4M | 0.07% | +228,471 | New | +$25.4M |
|
|
6
iShares Russell 2000 ETF
IWM
$67B
| $18.1M | 0.05% | 118,086 -401,139 | -77% | -$61.4M |
|
|
7
Baidu
BIDU
$32.8B
| $17.6M | 0.05% | 106,674 +73,786 | +224% | +$12.2M |
|
|
8
Alphabet (Google) Class A
GOOGL
$2.57T
| $13.8M | 0.04% | 11,689 +10,905 | +1,391% | +$12.8M |
|
|
RHT
9
DELISTED
Red Hat Inc
RHT
| $11.8M | 0.03% | 64,525 +63,525 | +6,353% | +$11.6M |
|
10
iShares MSCI Brazil ETF
EWZ
$5.45B
| $11.7M | 0.03% | 285,708 +121,994 | +75% | +$5M |
|
|
XYZ
11
Block, Inc.
XYZ
$48.5B
| $11.5M | 0.03% | 153,825 -97,139 | -39% | -$7.28M |
|
12
Johnson & Johnson
JNJ
$427B
| $11.3M | 0.03% | +81,179 | New | +$11.3M |
|
13
Merck
MRK
$210B
| $11.3M | 0.03% | 136,330 +131,593 | +2,778% | +$10.9M |
|
|
XLNX
14
DELISTED
Xilinx Inc
XLNX
| $10.5M | 0.03% | +83,024 | New | +$10.5M |
|
15
Salesforce
CRM
$245B
| $10.4M | 0.03% | +65,976 | New | +$10.4M |
|
16
Coca-Cola
KO
$297B
| $8.53M | 0.02% | +181,937 | New | +$8.53M |
|
17
Wynn Resorts
WYNN
$13.2B
| $8.53M | 0.02% | 71,450 -25,619 | -26% | -$3.06M |
|
18
NVIDIA
NVDA
$4.24T
| $8.03M | 0.02% | 44,727 -18,056 | -29% | -$3.24M |
|
|
VMW
19
DELISTED
VMware, Inc
VMW
| $7.32M | 0.02% | +40,532 | New | +$7.32M |
|
20
Wayfair
W
$9.67B
| $6.6M | 0.02% | +44,463 | New | +$6.6M |
|
21
GE Aerospace
GE
$292B
| $6.58M | 0.02% | 658,793 -141,681 | -18% | -$1.42M |
|
22
Energy Select Sector SPDR Fund
XLE
$27.6B
| $6.43M | 0.02% | +97,269 | New | +$6.43M |
|
23
Intuitive Surgical
ISRG
$170B
| $6.42M | 0.02% | +11,251 | New | +$6.42M |
|
24
American Airlines Group
AAL
$8.82B
| $6.3M | 0.02% | +198,358 | New | +$6.3M |
|
25
Las Vegas Sands
LVS
$39.6B
| $6.26M | 0.02% | 102,708 +48,244 | +89% | +$2.94M |
|