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 | |
|---|---|---|---|---|---|---|
226
iShares Select Dividend ETF
DVY
$20.8B
| $1.97M | ﹤0.01% |
17,407
-36,943
| -68% | -$4.19M |
|
227
Cigna
CI
$81.5B
| $1.97M | ﹤0.01% |
7,003
-50,562
| -88% | -$14.2M |
|
228
NRG Energy
NRG
$28.6B
| $1.96M | ﹤0.01% |
+52,523
| New | +$1.96M |
|
229
LyondellBasell Industries
LYB
$17.7B
| $1.95M | ﹤0.01% |
+21,236
| New | +$1.95M |
|
230
Texas Roadhouse
TXRH
$11.2B
| $1.94M | ﹤0.01% |
17,252
+13,640
| +378% | +$1.53M |
|
231
Workiva
WK
$4.48B
| $1.93M | ﹤0.01% |
+18,988
| New | +$1.93M |
|
232
Ametek
AME
$43.3B
| $1.92M | ﹤0.01% |
+11,830
| New | +$1.92M |
|
233
First Majestic Silver
AG
$4.47B
| $1.9M | ﹤0.01% |
336,758
-37,378
| -10% | -$211K |
|
234
Vornado Realty Trust
VNO
$7.93B
| $1.89M | ﹤0.01% |
104,116
+61,000
| +141% | +$1.11M |
|
235
Maravai LifeSciences
MRVI
$363M
| $1.87M | ﹤0.01% |
150,350
+149,533
| +18,303% | +$1.86M |
|
236
Cencora
COR
$56.7B
| $1.86M | ﹤0.01% |
9,685
+1,164
| +14% | +$224K |
|
237
Airbnb
ABNB
$75.8B
| $1.86M | ﹤0.01% |
14,515
+9,832
| +210% | +$1.26M |
|
238
DigitalOcean
DOCN
$2.98B
| $1.85M | ﹤0.01% |
46,117
+941
| +2% | +$37.8K |
|
239
TripAdvisor
TRIP
$2.05B
| $1.85M | ﹤0.01% |
+111,956
| New | +$1.85M |
|
240
Conagra Brands
CAG
$9.23B
| $1.84M | ﹤0.01% |
54,674
-14,822
| -21% | -$500K |
|
|
RETA
241
DELISTED
Reata Pharmaceuticals, Inc. Class A Common Stock
RETA
| $1.82M | ﹤0.01% |
17,884
+6,143
| +52% | +$626K |
|
242
United Parks & Resorts
PRKS
$2.99B
| $1.82M | ﹤0.01% |
32,508
+25,177
| +343% | +$1.41M |
|
243
Invesco S&P 500 Low Volatility ETF
SPLV
$7.99B
| $1.82M | ﹤0.01% |
28,926
+6,642
| +30% | +$417K |
|
|
CIR
244
DELISTED
CIRCOR International, Inc
CIR
| $1.8M | ﹤0.01% |
+31,931
| New | +$1.8M |
|
245
American International
AIG
$43.9B
| $1.79M | ﹤0.01% |
+31,166
| New | +$1.79M |
|
246
CommScope
COMM
$3.55B
| $1.78M | ﹤0.01% |
316,741
+240,850
| +317% | +$1.36M |
|
|
JWN
247
DELISTED
Nordstrom
JWN
| $1.78M | ﹤0.01% |
+87,033
| New | +$1.78M |
|
248
United Parcel Service
UPS
$72.1B
| $1.78M | ﹤0.01% |
+9,932
| New | +$1.78M |
|
249
Annaly Capital Management
NLY
$14.2B
| $1.78M | ﹤0.01% |
+88,861
| New | +$1.78M |
|
250
Moderna
MRNA
$9.78B
| $1.77M | ﹤0.01% |
+14,597
| New | +$1.77M |
|