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 | |
|---|---|---|---|---|---|---|
|
YALA
1151
Yalla Group
YALA
$1.18B
| $75K | ﹤0.01% |
17,224
+10,215
| +146% | +$44.5K |
|
1152
HF Sinclair
DINO
$9.56B
| $74K | ﹤0.01% |
1,679
-16,463
| -91% | -$726K |
|
1153
Esperion Therapeutics
ESPR
$573M
| $74K | ﹤0.01% |
53,346
-42,248
| -44% | -$58.6K |
|
1154
SPDR S&P Oil & Gas Equipment & Services ETF
XES
$156M
| $74K | ﹤0.01% |
948
+403
| +74% | +$31.5K |
|
1155
Lightwave Logic
LWLG
$417M
| $73K | ﹤0.01% |
10,493
-13,844
| -57% | -$96.3K |
|
1156
Microvast
MVST
$1.06B
| $73K | ﹤0.01% |
45,881
-3,232
| -7% | -$5.14K |
|
1157
REV Group
REVG
$3.02B
| $73K | ﹤0.01% |
5,544
+4,144
| +296% | +$54.6K |
|
|
SLRN
1158
DELISTED
ACELYRIN
SLRN
| $73K | ﹤0.01% |
+3,511
| New | +$73K |
|
1159
Sterling Infrastructure
STRL
$9.54B
| $73K | ﹤0.01% |
1,314
-283
| -18% | -$15.7K |
|
1160
Atara Biotherapeutics
ATRA
$85.1M
| $72K | ﹤0.01% |
1,811
+1,285
| +244% | +$51.1K |
|
1161
SPDR Bloomberg Convertible Securities ETF
CWB
$4.5B
| $72K | ﹤0.01% |
1,040
+977
| +1,551% | +$67.6K |
|
1162
8x8 Inc
EGHT
$286M
| $72K | ﹤0.01% |
17,029
+9,918
| +139% | +$41.9K |
|
1163
La-Z-Boy
LZB
$1.39B
| $72K | ﹤0.01% |
+2,541
| New | +$72K |
|
1164
NuScale Power
SMR
$4.87B
| $72K | ﹤0.01% |
+10,713
| New | +$72K |
|
1165
Voya Financial
VOYA
$7.44B
| $72K | ﹤0.01% |
1,015
-29,791
| -97% | -$2.11M |
|
1166
ALX Oncology
ALXO
$56.8M
| $71K | ﹤0.01% |
+9,531
| New | +$71K |
|
1167
ARK Genomic Revolution ETF
ARKG
$1.04B
| $71K | ﹤0.01% |
2,102
+2,002
| +2,002% | +$67.6K |
|
1168
Integer Holdings
ITGR
$3.55B
| $71K | ﹤0.01% |
+808
| New | +$71K |
|
1169
Blue Owl Capital
OWL
$12.2B
| $71K | ﹤0.01% |
+6,116
| New | +$71K |
|
1170
Simply Good Foods
SMPL
$2.73B
| $71K | ﹤0.01% |
1,956
+1,665
| +572% | +$60.4K |
|
1171
Sprout Social
SPT
$803M
| $71K | ﹤0.01% |
+1,553
| New | +$71K |
|
|
SCU
1172
DELISTED
Sculptor Capital Management, Inc. Class A Common Stock
SCU
| $71K | ﹤0.01% |
8,067
-5,882
| -42% | -$51.8K |
|
1173
Argan
AGX
$3.18B
| $70K | ﹤0.01% |
+1,794
| New | +$70K |
|
1174
Century Aluminum
CENX
$2.44B
| $70K | ﹤0.01% |
+8,039
| New | +$70K |
|
1175
Empire State Realty Trust
ESRT
$1.34B
| $70K | ﹤0.01% |
9,361
+8,198
| +705% | +$61.3K |
|