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
|
+$144M |
| 2 |
Invesco QQQ Trust
QQQ
|
+$68.7M |
| 3 |
AT&T
T
|
+$45.5M |
| 4 |
Meta Platforms (Facebook)
META
|
+$38M |
| 5 |
iShares MSCI Emerging Markets ETF
EEM
|
+$35.4M |
Top Sells
| 1 |
Microsoft
MSFT
|
+$94.2M |
| 2 |
Citigroup
C
|
+$62.3M |
| 3 |
JPMorgan Chase
JPM
|
+$56.2M |
| 4 |
Berkshire Hathaway Class B
BRK.B
|
+$45.8M |
| 5 |
SPDR Gold Trust
GLD
|
+$44.4M |
Sector Composition
| 1 | Consumer Discretionary | 16.85% |
| 2 | Technology | 15.5% |
| 3 | Communication Services | 10.53% |
| 4 | Healthcare | 8.8% |
| 5 | Consumer Staples | 5.63% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
1176
Liquidia Corp
LQDA
$2.24B
| $67K | ﹤0.01% |
+10,543
| New | +$67K |
|
1177
American Well
AMWL
$107M
| $66K | ﹤0.01% |
1,167
-37
| -3% | -$2.09K |
|
1178
Arcturus Therapeutics
ARCT
$470M
| $66K | ﹤0.01% |
3,945
+3,074
| +353% | +$51.4K |
|
|
BZUN
1179
Baozun
BZUN
$276M
| $66K | ﹤0.01% |
+12,525
| New | +$66K |
|
1180
Co-Diagnostics
CODX
$13.1M
| $66K | ﹤0.01% |
26,205
+9,666
| +58% | +$24.3K |
|
1181
Chart Industries
GTLS
$8.95B
| $66K | ﹤0.01% |
+580
| New | +$66K |
|
1182
Jackson Financial
JXN
$6.81B
| $66K | ﹤0.01% |
+1,917
| New | +$66K |
|
1183
Mayville Engineering Co
MEC
$289M
| $66K | ﹤0.01% |
+5,259
| New | +$66K |
|
1184
Perion Network
PERI
$418M
| $66K | ﹤0.01% |
2,635
+1,584
| +151% | +$39.7K |
|
1185
Revvity
RVTY
$9.62B
| $66K | ﹤0.01% |
472
-1,340
| -74% | -$187K |
|
1186
Consumers Staples Select Sector SPDR Fund
XLP
$16B
| $66K | ﹤0.01% |
894
-202,908
| -100% | -$15M |
|
|
BKI
1187
DELISTED
Black Knight, Inc. Common Stock
BKI
| $66K | ﹤0.01% |
1,070
-121
| -10% | -$7.46K |
|
|
ALBO
1188
DELISTED
Albireo Pharma, Inc. Common Stock
ALBO
| $66K | ﹤0.01% |
3,087
-2,778
| -47% | -$59.4K |
|
1189
Consumer Portfolio Services
CPSS
$190M
| $65K | ﹤0.01% |
+7,365
| New | +$65K |
|
1190
CorMedix
CRMD
$966M
| $65K | ﹤0.01% |
15,498
-4,057
| -21% | -$17K |
|
1191
Jack Henry & Associates
JKHY
$11.7B
| $65K | ﹤0.01% |
+371
| New | +$65K |
|
1192
Lightwave Logic
LWLG
$417M
| $65K | ﹤0.01% |
15,217
-815
| -5% | -$3.48K |
|
1193
Summit Therapeutics
SMMT
$14.1B
| $65K | ﹤0.01% |
+15,529
| New | +$65K |
|
1194
NovaGold Resources
NG
$2.82B
| $64K | ﹤0.01% |
10,778
+10,434
| +3,033% | +$62K |
|
1195
Intellia Therapeutics
NTLA
$1.23B
| $64K | ﹤0.01% |
1,849
-195
| -10% | -$6.75K |
|
1196
SK Telecom
SKM
$8.36B
| $64K | ﹤0.01% |
3,144
+1,720
| +121% | +$35K |
|
|
SLI
1197
Standard Lithium
SLI
$592M
| $64K | ﹤0.01% |
21,724
-15,963
| -42% | -$47K |
|
1198
Amkor Technology
AMKR
$6.29B
| $63K | ﹤0.01% |
+2,650
| New | +$63K |
|
1199
IHS Holding
IHS
$2.55B
| $63K | ﹤0.01% |
+10,401
| New | +$63K |
|
1200
KLX Energy Services
KLXE
$31.4M
| $63K | ﹤0.01% |
3,647
-18,884
| -84% | -$326K |
|