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 |
Amazon
AMZN
|
+$158M |
| 2 |
Invesco QQQ Trust
QQQ
|
+$69.1M |
| 3 |
Meta Platforms (Facebook)
META
|
+$57.4M |
| 4 |
Citigroup
C
|
+$23.4M |
| 5 |
Goldman Sachs
GS
|
+$23M |
Top Sells
| 1 |
Apple
AAPL
|
+$49.8M |
| 2 |
Berkshire Hathaway Class B
BRK.B
|
+$43.2M |
| 3 |
SPDR Dow Jones Industrial Average ETF Trust
DIA
|
+$42.2M |
| 4 |
Micron Technology
MU
|
+$26.1M |
| 5 |
Adobe
ADBE
|
+$21M |
Sector Composition
| 1 | Consumer Discretionary | 20.63% |
| 2 | Communication Services | 16.3% |
| 3 | Technology | 12.42% |
| 4 | Industrials | 9.24% |
| 5 | Healthcare | 8.11% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
1176
ProShares UltraPro Short Dow 30
SDOW
$172M
| $64K | ﹤0.01% |
71
-84
| -54% | -$75.7K |
|
1177
Commercial Metals
CMC
$6.47B
| $63K | ﹤0.01% |
+3,087
| New | +$63K |
|
1178
KraneShares CSI China Internet ETF
KWEB
$9.05B
| $63K | ﹤0.01% |
1,293
+756
| +141% | +$36.8K |
|
1179
Ultragenyx Pharmaceutical
RARE
$2.92B
| $63K | ﹤0.01% |
+831
| New | +$63K |
|
1180
Reliance Steel & Aluminium
RS
$15.3B
| $63K | ﹤0.01% |
+740
| New | +$63K |
|
1181
UDR
UDR
$12.7B
| $63K | ﹤0.01% |
+1,561
| New | +$63K |
|
|
ACC
1182
DELISTED
American Campus Communities, Inc.
ACC
| $63K | ﹤0.01% |
+1,552
| New | +$63K |
|
|
HOME
1183
DELISTED
At Home Group Inc.
HOME
| $63K | ﹤0.01% |
2,021
-19,056
| -90% | -$594K |
|
|
ACHN
1184
DELISTED
Achillion Pharmaceuticals, Inc.
ACHN
| $63K | ﹤0.01% |
17,239
+17,061
| +9,585% | +$62.3K |
|
1185
Invesco DB Agriculture Fund
DBA
$814M
| $62K | ﹤0.01% |
3,712
-102
| -3% | -$1.7K |
|
1186
Enovis
ENOV
$1.81B
| $62K | ﹤0.01% |
1,013
-4,696
| -82% | -$287K |
|
1187
FTAI Aviation
FTAI
$17.6B
| $62K | ﹤0.01% |
+4,011
| New | +$62K |
|
1188
LSB Industries
LXU
$576M
| $62K | ﹤0.01% |
+8,286
| New | +$62K |
|
1189
Standard Motor Products
SMP
$889M
| $62K | ﹤0.01% |
1,274
-253
| -17% | -$12.3K |
|
|
NEX
1190
DELISTED
NexTier Oilfield Solutions Inc.
NEX
| $62K | ﹤0.01% |
5,033
+1,960
| +64% | +$24.1K |
|
1191
Cohu
COHU
$964M
| $61K | ﹤0.01% |
2,455
+1,747
| +247% | +$43.4K |
|
1192
Nice
NICE
$8.82B
| $61K | ﹤0.01% |
535
+25
| +5% | +$2.85K |
|
1193
Dave & Buster's
PLAY
$817M
| $61K | ﹤0.01% |
931
-10,641
| -92% | -$697K |
|
1194
Tower Semiconductor
TSEM
$7.39B
| $61K | ﹤0.01% |
+2,841
| New | +$61K |
|
1195
Zevra Therapeutics
ZVRA
$435M
| $61K | ﹤0.01% |
+798
| New | +$61K |
|
|
NEOS
1196
DELISTED
Neos Therapeutics, Inc
NEOS
| $61K | ﹤0.01% |
12,657
+11,824
| +1,419% | +$57K |
|
1197
Alliance Resource Partners
ARLP
$2.92B
| $60K | ﹤0.01% |
2,952
-220
| -7% | -$4.47K |
|
|
DHC
1198
Diversified Healthcare Trust
DHC
$1.07B
| $60K | ﹤0.01% |
3,455
-1,295
| -27% | -$22.5K |
|
1199
Huntington Bancshares
HBAN
$25.9B
| $60K | ﹤0.01% |
4,057
+424
| +12% | +$6.27K |
|
1200
Quantum Corp
QMCO
$98M
| $60K | ﹤0.01% |
1,254
+939
| +298% | +$44.9K |
|