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
|
$586M |
| 2 |
Strategy Inc Common Stock Class A
MSTR
|
$82.5M |
| 3 |
Intel
INTC
|
$40.4M |
| 4 |
Invesco QQQ Trust
QQQ
|
$39.4M |
| 5 |
Uber
UBER
|
$36.3M |
Top Sells
| 1 |
NVIDIA
NVDA
|
$130M |
| 2 |
Pinduoduo
PDD
|
$95.7M |
| 3 |
Boeing
BA
|
$56.2M |
| 4 |
KraneShares CSI China Internet ETF
KWEB
|
$40.7M |
| 5 |
Microsoft
MSFT
|
$40.5M |
Sector Composition
| 1 | Technology | 34.29% |
| 2 | Consumer Discretionary | 11.38% |
| 3 | Healthcare | 9.65% |
| 4 | Financials | 6.33% |
| 5 | Communication Services | 5.52% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
101
iShares MSCI Emerging Markets ETF
EEM
$19B
| $6.94M | ﹤0.01% | 165,847 +131,802 | +387% | +$5.51M |
|
102
Capital One
COF
$145B
| $6.73M | ﹤0.01% | 37,719 +21,251 | +129% | +$3.79M |
|
103
Eaton
ETN
$136B
| $6.69M | ﹤0.01% | 20,153 -11,109 | -36% | -$3.69M |
|
104
Novavax
NVAX
$1.21B
| $6.48M | ﹤0.01% | 805,984 -92,836 | -10% | -$746K |
|
105
PENN Entertainment
PENN
$2.95B
| $6.29M | ﹤0.01% | 317,286 +126,274 | +66% | +$2.5M |
|
106
Amgen
AMGN
$155B
| $6.27M | ﹤0.01% | +24,073 | New | +$6.27M |
|
107
GE Aerospace
GE
$292B
| $6.08M | ﹤0.01% | +36,453 | New | +$6.08M |
|
108
iShares 7-10 Year Treasury Bond ETF
IEF
$35.7B
| $6.08M | ﹤0.01% | 65,726 -113,533 | -63% | -$10.5M |
|
109
Target
TGT
$43.6B
| $5.85M | ﹤0.01% | +43,278 | New | +$5.85M |
|
110
Hilton Worldwide
HLT
$64.9B
| $5.83M | ﹤0.01% | 23,597 +10,631 | +82% | +$2.63M |
|
111
TSMC
TSM
$1.2T
| $5.77M | ﹤0.01% | 29,217 -86,095 | -75% | -$17M |
|
112
Darden Restaurants
DRI
$24.1B
| $5.77M | ﹤0.01% | +30,892 | New | +$5.77M |
|
113
AST SpaceMobile
ASTS
$13.2B
| $5.74M | ﹤0.01% | 272,248 -3,244 | -1% | -$68.4K |
|
114
ARK 21Shares Bitcoin ETF
ARKB
$1.73B
| $5.66M | ﹤0.01% | +60,632 | New | +$5.66M |
|
115
UiPath
PATH
$5.95B
| $5.63M | ﹤0.01% | 442,951 +173,940 | +65% | +$2.21M |
|
116
Stellantis
STLA
$27.8B
| $5.59M | ﹤0.01% | 427,981 -12,164 | -3% | -$159K |
|
117
WillScot Mobile Mini Holdings
WSC
$4.41B
| $5.55M | ﹤0.01% | 166,067 +145,927 | +725% | +$4.88M |
|
118
ProShares UltraPro S&P 500
UPRO
$4.46B
| $5.49M | ﹤0.01% | +61,882 | New | +$5.49M |
|
119
TG Therapeutics
TGTX
$4.65B
| $5.42M | ﹤0.01% | 180,098 +148,339 | +467% | +$4.46M |
|
120
NIO
NIO
$14.3B
| $5.41M | ﹤0.01% | 1,241,947 +152,975 | +14% | +$667K |
|
121
iShares MSCI Japan ETF
EWJ
$15.3B
| $5.3M | ﹤0.01% | 79,041 +16,551 | +26% | +$1.11M |
|
122
Trump Media & Technology Group
DJT
$4.91B
| $5.29M | ﹤0.01% | 155,033 +1,715 | +1% | +$58.5K |
|
123
Biogen
BIIB
$19.4B
| $5.13M | ﹤0.01% | 33,542 -19,576 | -37% | -$2.99M |
|
124
Synchrony
SYF
$28.4B
| $5.06M | ﹤0.01% | 77,815 -11,312 | -13% | -$735K |
|
125
Bloom Energy
BE
$12.4B
| $5.02M | ﹤0.01% | +225,901 | New | +$5.02M |
|