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
|
$60M |
| 2 |
Microsoft
MSFT
|
$58.6M |
| 3 |
iShares 20+ Year Treasury Bond ETF
TLT
|
$52.5M |
| 4 |
PayPal
PYPL
|
$40.9M |
| 5 |
Netflix
NFLX
|
$29.7M |
Top Sells
| 1 |
Apple
AAPL
|
$48.7M |
| 2 |
Walmart
WMT
|
$45.2M |
| 3 |
Adobe
ADBE
|
$40.6M |
| 4 |
VanEck Oil Services ETF
OIH
|
$34.2M |
| 5 |
Enphase Energy
ENPH
|
$27.2M |
Sector Composition
| 1 | Technology | 21.17% |
| 2 | Healthcare | 10.87% |
| 3 | Consumer Discretionary | 10.73% |
| 4 | Communication Services | 10.55% |
| 5 | Financials | 7.54% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
101
Madrigal Pharmaceuticals
MDGL
$9.7B
| $5.23M | ﹤0.01% |
22,642
+10,278
| +83% | +$2.37M |
|
102
VanEck Junior Gold Miners ETF
GDXJ
$6.91B
| $5.19M | ﹤0.01% |
+145,671
| New | +$5.19M |
|
103
XPO
XPO
$14.8B
| $5.14M | ﹤0.01% |
+87,181
| New | +$5.14M |
|
104
Coherent
COHR
$13.8B
| $5.14M | ﹤0.01% |
100,755
+60,124
| +148% | +$3.06M |
|
105
Vanguard Growth ETF
VUG
$185B
| $5.11M | ﹤0.01% |
18,050
+5,124
| +40% | +$1.45M |
|
106
SPDR Gold Trust
GLD
$111B
| $5.1M | ﹤0.01% |
+28,632
| New | +$5.1M |
|
107
VF Corp
VFC
$5.79B
| $4.96M | ﹤0.01% |
+259,902
| New | +$4.96M |
|
108
The Communication Services Select Sector SPDR Fund
XLC
$25.4B
| $4.95M | ﹤0.01% |
76,094
-90,340
| -54% | -$5.88M |
|
109
XPeng
XPEV
$19.3B
| $4.94M | ﹤0.01% |
368,066
+366,216
| +19,795% | +$4.91M |
|
110
Regeneron Pharmaceuticals
REGN
$59.8B
| $4.9M | ﹤0.01% |
+6,817
| New | +$4.9M |
|
111
Crocs
CROX
$4.74B
| $4.86M | ﹤0.01% |
43,261
+23,260
| +116% | +$2.62M |
|
112
Plug Power
PLUG
$1.72B
| $4.81M | ﹤0.01% |
463,413
+164,686
| +55% | +$1.71M |
|
113
The Mosaic Company
MOS
$10.4B
| $4.58M | ﹤0.01% |
130,964
+48,780
| +59% | +$1.71M |
|
114
Eaton
ETN
$134B
| $4.54M | ﹤0.01% |
+22,593
| New | +$4.54M |
|
115
Robinhood
HOOD
$89.6B
| $4.54M | ﹤0.01% |
455,019
+235,297
| +107% | +$2.35M |
|
116
Salesforce
CRM
$245B
| $4.52M | ﹤0.01% |
21,393
+21,293
| +21,293% | +$4.5M |
|
117
Starbucks
SBUX
$99.2B
| $4.51M | ﹤0.01% |
45,514
-258,463
| -85% | -$25.6M |
|
118
Amgen
AMGN
$153B
| $4.47M | ﹤0.01% |
+20,129
| New | +$4.47M |
|
119
Danaher
DHR
$143B
| $4.46M | ﹤0.01% |
+20,973
| New | +$4.46M |
|
120
STMicroelectronics
STM
$23B
| $4.44M | ﹤0.01% |
88,723
-5,569
| -6% | -$278K |
|
121
Caesars Entertainment
CZR
$5.18B
| $4.4M | ﹤0.01% |
+86,348
| New | +$4.4M |
|
122
PBF Energy
PBF
$3.22B
| $4.34M | ﹤0.01% |
106,059
+92,015
| +655% | +$3.77M |
|
123
Lam Research
LRCX
$124B
| $4.32M | ﹤0.01% |
+67,200
| New | +$4.32M |
|
124
Canadian Solar
CSIQ
$663M
| $4.24M | ﹤0.01% |
109,549
+4,004
| +4% | +$155K |
|
125
Sarepta Therapeutics
SRPT
$1.98B
| $4.1M | ﹤0.01% |
+35,835
| New | +$4.1M |
|