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 |
iShares 20+ Year Treasury Bond ETF
TLT
|
+$278M |
| 2 |
Alphabet (Google) Class A
GOOGL
|
+$84.4M |
| 3 |
NVIDIA
NVDA
|
+$76.9M |
| 4 |
TSMC
TSM
|
+$74.9M |
| 5 |
Amazon
AMZN
|
+$53.5M |
Top Sells
| 1 |
Apple
AAPL
|
+$497M |
| 2 |
Strategy Inc Common Stock Class A
MSTR
|
+$73.7M |
| 3 |
Alibaba
BABA
|
+$49M |
| 4 |
Advanced Micro Devices
AMD
|
+$48.1M |
| 5 |
Uber
UBER
|
+$41.8M |
Sector Composition
| 1 | Technology | 22.9% |
| 2 | Consumer Discretionary | 12.26% |
| 3 | Healthcare | 9.52% |
| 4 | Communication Services | 8.42% |
| 5 | Financials | 7.07% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
1101
Dyne Therapeutics
DYN
$1.91B
| $91K | ﹤0.01% |
+8,795
| New | +$91K |
|
1102
iShares S&P GSCI Commodity-Indexed Trust
GSG
$996M
| $91K | ﹤0.01% |
4,027
-1,707
| -30% | -$38.6K |
|
1103
Disc Medicine
IRON
$2.08B
| $91K | ﹤0.01% |
+1,840
| New | +$91K |
|
1104
T-REX 2X Long Tesla Daily Target ETF
TSLT
$469M
| $91K | ﹤0.01% |
7,043
+6,424
| +1,038% | +$83K |
|
1105
United Microelectronic
UMC
$16.9B
| $91K | ﹤0.01% |
12,740
-3,131
| -20% | -$22.4K |
|
1106
VanEck ChiNext ETF
CNXT
$39M
| $90K | ﹤0.01% |
3,271
-10,949
| -77% | -$301K |
|
1107
Calavo Growers
CVGW
$493M
| $90K | ﹤0.01% |
3,787
+1,099
| +41% | +$26.1K |
|
1108
ProShares Ultra Silver
AGQ
$899M
| $89K | ﹤0.01% |
1,931
-26,224
| -93% | -$1.21M |
|
1109
Anavex Life Sciences
AVXL
$822M
| $89K | ﹤0.01% |
10,427
+1,429
| +16% | +$12.2K |
|
1110
Amplitude
AMPL
$1.47B
| $88K | ﹤0.01% |
+8,715
| New | +$88K |
|
1111
Goosehead Insurance
GSHD
$2.04B
| $88K | ﹤0.01% |
+746
| New | +$88K |
|
1112
Tenable Holdings
TENB
$3.63B
| $88K | ﹤0.01% |
2,543
-453
| -15% | -$15.7K |
|
1113
United States 12 Month Natural Gas Fund
UNL
$10.3M
| $88K | ﹤0.01% |
+8,613
| New | +$88K |
|
1114
UPAR Ultra Risk Parity ETF
UPAR
$59.8M
| $87K | ﹤0.01% |
6,327
-63
| -1% | -$866 |
|
|
CNR
1115
Core Natural Resources, Inc.
CNR
$3.75B
| $87K | ﹤0.01% |
+1,136
| New | +$87K |
|
1116
Digital Turbine
APPS
$503M
| $87K | ﹤0.01% |
32,356
+25,123
| +347% | +$67.6K |
|
1117
Park Hotels & Resorts
PK
$2.38B
| $87K | ﹤0.01% |
8,173
-19,105
| -70% | -$203K |
|
1118
Spirit AeroSystems
SPR
$4.55B
| $87K | ﹤0.01% |
2,541
-10,508
| -81% | -$360K |
|
1119
CDW
CDW
$21.7B
| $86K | ﹤0.01% |
+537
| New | +$86K |
|
1120
Home BancShares
HOMB
$5.89B
| $86K | ﹤0.01% |
3,054
-372
| -11% | -$10.5K |
|
1121
Janux Therapeutics
JANX
$1.46B
| $86K | ﹤0.01% |
+3,187
| New | +$86K |
|
1122
N-able
NABL
$1.55B
| $86K | ﹤0.01% |
+12,175
| New | +$86K |
|
1123
Pegasystems
PEGA
$9.89B
| $86K | ﹤0.01% |
2,484
-1,864
| -43% | -$64.5K |
|
1124
Barings BDC
BBDC
$984M
| $85K | ﹤0.01% |
+9,008
| New | +$85K |
|
1125
BlackLine
BL
$3.35B
| $85K | ﹤0.01% |
+1,774
| New | +$85K |
|