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 | |
|---|---|---|---|---|---|---|
26
Energy Select Sector SPDR Fund
XLE
$27.6B
| $9.95M | 0.41% | 145,231 +116,599 | +407% | +$7.98M |
|
27
Western Digital
WDC
$27.9B
| $9.82M | 0.4% | 113,617 -66,818 | -37% | -$5.77M |
|
28
PayPal
PYPL
$67.1B
| $9.59M | 0.39% | 149,776 +112,873 | +306% | +$7.23M |
|
29
Starbucks
SBUX
$100B
| $9.29M | 0.38% | 172,935 +83,676 | +94% | +$4.49M |
|
30
Ulta Beauty
ULTA
$22.1B
| $8.63M | 0.35% | +38,194 | New | +$8.63M |
|
31
Adobe
ADBE
$151B
| $8.26M | 0.34% | 55,368 +39,682 | +253% | +$5.92M |
|
32
Oracle
ORCL
$635B
| $8.23M | 0.34% | 170,297 +117,438 | +222% | +$5.68M |
|
|
AABA
33
DELISTED
Altaba Inc. Common Stock
AABA
| $8.22M | 0.34% | 124,076 +51,873 | +72% | +$3.44M |
|
34
Mastercard
MA
$538B
| $7.99M | 0.33% | 56,609 -36,701 | -39% | -$5.18M |
|
35
Wells Fargo
WFC
$263B
| $7.26M | 0.3% | 131,568 +47,175 | +56% | +$2.6M |
|
36
T-Mobile US
TMUS
$284B
| $7.21M | 0.29% | 116,967 -35,638 | -23% | -$2.2M |
|
37
Applied Materials
AMAT
$128B
| $7.1M | 0.29% | 136,299 +54,174 | +66% | +$2.82M |
|
38
Mondelez International
MDLZ
$79.5B
| $6.94M | 0.28% | 170,798 -145,855 | -46% | -$5.93M |
|
39
Wynn Resorts
WYNN
$13.2B
| $6.15M | 0.25% | 41,317 +41,117 | +20,559% | +$6.12M |
|
40
ConocoPhillips
COP
$124B
| $6.06M | 0.25% | 121,169 +200 | +0.2% | +$10K |
|
41
United Airlines
UAL
$34B
| $6M | 0.24% | 98,542 +71,890 | +270% | +$4.38M |
|
42
Visa
V
$683B
| $5.89M | 0.24% | 55,934 -73,080 | -57% | -$7.69M |
|
43
Colgate-Palmolive
CL
$67.9B
| $5.84M | 0.24% | 80,128 +42,071 | +111% | +$3.06M |
|
|
ALR
44
DELISTED
Alere Inc
ALR
| $5.79M | 0.24% | 113,533 +81,786 | +258% | +$4.17M |
|
45
APA Corp
APA
$8.31B
| $5.41M | 0.22% | +118,044 | New | +$5.41M |
|
|
COL
46
DELISTED
Rockwell Collins
COL
| $5.38M | 0.22% | 41,162 +31,684 | +334% | +$4.14M |
|
47
Nike
NKE
$114B
| $5.23M | 0.21% | +100,895 | New | +$5.23M |
|
|
KITE
48
DELISTED
Kite Pharma, Inc.
KITE
| $5.18M | 0.21% | +28,828 | New | +$5.18M |
|
49
VanEck Semiconductor ETF
SMH
$27B
| $5.09M | 0.21% | +54,542 | New | +$5.09M |
|
50
MGM Resorts International
MGM
$10.8B
| $5.07M | 0.21% | 155,685 +147,682 | +1,845% | +$4.81M |
|