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 | |
|---|---|---|---|---|---|---|
1126
Signet Jewelers
SIG
$3.77B
| $70K | ﹤0.01% |
6,913
-13,364
| -66% | -$135K |
|
1127
Direxion Daily Technology Bear 3x Shares
TECS
$51.4M
| $70K | ﹤0.01% |
34
-3
| -8% | -$6.18K |
|
1128
Wintrust Financial
WTFC
$9.09B
| $70K | ﹤0.01% |
1,609
-261
| -14% | -$11.4K |
|
1129
Ameren
AEE
$27B
| $69K | ﹤0.01% |
+989
| New | +$69K |
|
1130
iShares Biotechnology ETF
IBB
$5.74B
| $69K | ﹤0.01% |
506
-12,644
| -96% | -$1.72M |
|
1131
iShares Russell 3000 ETF
IWV
$16.9B
| $69K | ﹤0.01% |
384
-475
| -55% | -$85.4K |
|
|
CAMP
1132
DELISTED
CalAmp Corp.
CAMP
| $69K | ﹤0.01% |
+377
| New | +$69K |
|
|
GHL
1133
DELISTED
Greenhill & Co., Inc.
GHL
| $69K | ﹤0.01% |
6,945
+5,953
| +600% | +$59.1K |
|
|
CCMP
1134
DELISTED
CMC Materials, Inc. Common Stock
CCMP
| $69K | ﹤0.01% |
496
-2,039
| -80% | -$284K |
|
1135
D.R. Horton
DHI
$53.8B
| $68K | ﹤0.01% |
1,227
-2,868
| -70% | -$159K |
|
1136
Odyssey Marine Exploration
OMEX
$79.1M
| $68K | ﹤0.01% |
15,052
+13,364
| +792% | +$60.4K |
|
|
JO
1137
DELISTED
iPath Series B Bloomberg Coffee Subindex Total ReturnSM ETN
JO
| $68K | ﹤0.01% |
+2,189
| New | +$68K |
|
1138
Asure Software
ASUR
$220M
| $67K | ﹤0.01% |
10,436
-9,883
| -49% | -$63.5K |
|
1139
Boston Beer
SAM
$2.41B
| $67K | ﹤0.01% |
+125
| New | +$67K |
|
|
X
1140
DELISTED
US Steel
X
| $67K | ﹤0.01% |
9,400
-66,994
| -88% | -$478K |
|
|
NPTN
1141
DELISTED
NEOPHOTONICS CORP
NPTN
| $67K | ﹤0.01% |
7,632
-4,390
| -37% | -$38.5K |
|
1142
Arcos Dorados Holdings
ARCO
$1.49B
| $66K | ﹤0.01% |
16,190
+15,731
| +3,427% | +$64.1K |
|
1143
Clean Energy Fuels
CLNE
$546M
| $66K | ﹤0.01% |
29,942
+24,259
| +427% | +$53.5K |
|
1144
Zumiez
ZUMZ
$356M
| $66K | ﹤0.01% |
+2,435
| New | +$66K |
|
|
AAIC
1145
DELISTED
Arlington Asset Investment Corp.
AAIC
| $66K | ﹤0.01% |
22,379
+17,823
| +391% | +$52.6K |
|
|
KOL
1146
DELISTED
VanEck Vectors Coal ETF
KOL
| $66K | ﹤0.01% |
938
-614
| -40% | -$43.2K |
|
1147
Liberty Media Series A
FWONA
$23B
| $65K | ﹤0.01% |
+2,340
| New | +$65K |
|
1148
Barnes & Noble Education
BNED
$289M
| $65K | ﹤0.01% |
412
-154
| -27% | -$24.3K |
|
|
JNPR
1149
DELISTED
Juniper Networks
JNPR
| $65K | ﹤0.01% |
2,868
-14,275
| -83% | -$324K |
|
1150
Morningstar
MORN
$10.8B
| $65K | ﹤0.01% |
462
+44
| +11% | +$6.19K |
|