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 |
Invesco QQQ Trust
QQQ
|
+$85.4M |
| 2 |
SPDR Gold Trust
GLD
|
+$75.9M |
| 3 |
NVIDIA
NVDA
|
+$42.6M |
| 4 |
Netflix
NFLX
|
+$41.1M |
| 5 |
iShares MSCI EAFE ETF
EFA
|
+$40.5M |
Top Sells
| 1 |
Apple
AAPL
|
+$65.7M |
| 2 |
iPath Series B S&P 500 VIX Short-Term Futures ETN
VXX
|
+$25.5M |
| 3 |
SPDR S&P 500 ETF Trust
SPY
|
+$24.4M |
| 4 |
SPDR Dow Jones Industrial Average ETF Trust
DIA
|
+$24.3M |
| 5 |
Broadcom
AVGO
|
+$21.3M |
Sector Composition
| 1 | Technology | 15.2% |
| 2 | Consumer Discretionary | 14.52% |
| 3 | Communication Services | 10.57% |
| 4 | Healthcare | 8.15% |
| 5 | Financials | 7.15% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
1176
XPEL
XPEL
$993M
| $60K | ﹤0.01% |
3,866
+1,181
| +44% | +$18.3K |
|
1177
iShares 5-10 Year Investment Grade Corporate Bond ETF
IGIB
$16.4B
| $59K | ﹤0.01% |
988
-59
| -6% | -$3.52K |
|
1178
MasTec
MTZ
$14.9B
| $59K | ﹤0.01% |
+1,325
| New | +$59K |
|
1179
Research Frontiers
REFR
$42.7M
| $59K | ﹤0.01% |
14,670
+1,046
| +8% | +$4.21K |
|
1180
Upwork
UPWK
$2.17B
| $59K | ﹤0.01% |
+4,117
| New | +$59K |
|
1181
Applied Optoelectronics
AAOI
$1.67B
| $58K | ﹤0.01% |
5,410
-19,338
| -78% | -$207K |
|
1182
ArcBest
ARCB
$1.67B
| $58K | ﹤0.01% |
2,198
-635
| -22% | -$16.8K |
|
1183
Brown-Forman Class B
BF.B
$13B
| $58K | ﹤0.01% |
921
+412
| +81% | +$25.9K |
|
1184
Canadian Natural Resources
CNQ
$65B
| $58K | ﹤0.01% |
6,873
+75
| +1% | +$633 |
|
1185
Medallion Financial
MFIN
$248M
| $58K | ﹤0.01% |
21,890
+6,102
| +39% | +$16.2K |
|
1186
Manitowoc
MTW
$363M
| $58K | ﹤0.01% |
5,415
+259
| +5% | +$2.77K |
|
1187
Oxford Industries
OXM
$770M
| $58K | ﹤0.01% |
+1,330
| New | +$58K |
|
1188
ProShares UltraShort Silver
ZSL
$19.4M
| $58K | ﹤0.01% |
183
+128
| +233% | +$40.6K |
|
|
RUSL
1189
DELISTED
Direxion Daily Russia Bull 2X Shares
RUSL
| $58K | ﹤0.01% |
3,759
-2,959
| -44% | -$45.7K |
|
|
NTP
1190
DELISTED
Nam Tai Property Inc.
NTP
| $58K | ﹤0.01% |
+9,340
| New | +$58K |
|
1191
Casella Waste Systems
CWST
$5.89B
| $57K | ﹤0.01% |
+1,100
| New | +$57K |
|
1192
Dorchester Minerals
DMLP
$1.21B
| $57K | ﹤0.01% |
4,530
-2,770
| -38% | -$34.9K |
|
1193
US Global Investors
GROW
$31.9M
| $57K | ﹤0.01% |
30,379
+29,530
| +3,478% | +$55.4K |
|
1194
Manhattan Associates
MANH
$13.3B
| $57K | ﹤0.01% |
612
+298
| +95% | +$27.8K |
|
1195
Schwab US REIT ETF
SCHH
$8.46B
| $57K | ﹤0.01% |
3,256
+400
| +14% | +$7K |
|
1196
WaFd
WAFD
$2.49B
| $57K | ﹤0.01% |
2,149
+1,424
| +196% | +$37.8K |
|
|
RDUS
1197
DELISTED
Radius Health, Inc.
RDUS
| $57K | ﹤0.01% |
4,208
-7,357
| -64% | -$99.7K |
|
|
TPCO
1198
DELISTED
Tribune Publishing Company Common Stock
TPCO
| $57K | ﹤0.01% |
+5,761
| New | +$57K |
|
1199
Golden Entertainment
GDEN
$649M
| $56K | ﹤0.01% |
+6,355
| New | +$56K |
|
1200
Hexcel
HXL
$4.98B
| $56K | ﹤0.01% |
1,239
-1,422
| -53% | -$64.3K |
|