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
|
+$114M |
| 2 |
Citigroup
C
|
+$77M |
| 3 |
Broadcom
AVGO
|
+$53M |
| 4 |
Pinduoduo
PDD
|
+$49.7M |
| 5 |
Intel
INTC
|
+$44.5M |
Top Sells
| 1 |
Energy Select Sector SPDR Fund
XLE
|
+$92.5M |
| 2 |
Pfizer
PFE
|
+$67.5M |
| 3 |
Boeing
BA
|
+$66.7M |
| 4 |
Direxion Daily Semiconductor Bull 3X Shares
SOXL
|
+$44.9M |
| 5 |
PayPal
PYPL
|
+$44.4M |
Sector Composition
| 1 | Technology | 27.91% |
| 2 | Consumer Discretionary | 14.92% |
| 3 | Healthcare | 10.74% |
| 4 | Financials | 10.11% |
| 5 | Materials | 6.23% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
1176
Semrush
SEMR
$1.1B
| $88K | ﹤0.01% |
6,603
-6,360
| -49% | -$84.8K |
|
1177
Banco Macro
BMA
$2.8B
| $87K | ﹤0.01% |
+1,534
| New | +$87K |
|
1178
Alkami Technology
ALKT
$2.63B
| $86K | ﹤0.01% |
+3,027
| New | +$86K |
|
1179
Cheniere Energy
CQP
$25.2B
| $86K | ﹤0.01% |
1,758
+1,209
| +220% | +$59.1K |
|
1180
Pediatrix Medical
MD
$1.45B
| $86K | ﹤0.01% |
+11,402
| New | +$86K |
|
1181
Magnachip Semiconductor
MX
$112M
| $86K | ﹤0.01% |
17,766
+3,252
| +22% | +$15.7K |
|
|
NPKI
1182
NPK International Inc.
NPKI
$889M
| $86K | ﹤0.01% |
10,399
-7,395
| -42% | -$61.2K |
|
1183
Neogen
NEOG
$1.19B
| $85K | ﹤0.01% |
+5,484
| New | +$85K |
|
1184
REV Group
REVG
$3.02B
| $85K | ﹤0.01% |
+3,449
| New | +$85K |
|
1185
Ardagh Metal Packaging
AMBP
$2.13B
| $85K | ﹤0.01% |
+25,117
| New | +$85K |
|
1186
Adaptive Biotechnologies
ADPT
$1.92B
| $84K | ﹤0.01% |
23,293
-4,873
| -17% | -$17.6K |
|
1187
CommScope
COMM
$3.61B
| $84K | ﹤0.01% |
68,581
-99,331
| -59% | -$122K |
|
1188
LSB Industries
LXU
$576M
| $84K | ﹤0.01% |
10,296
-21,217
| -67% | -$173K |
|
1189
Olaplex Holdings
OLPX
$947M
| $84K | ﹤0.01% |
54,759
-89,601
| -62% | -$137K |
|
1190
Patria Investments
PAX
$2.31B
| $84K | ﹤0.01% |
7,022
+6,356
| +954% | +$76K |
|
1191
Paysign
PAYS
$301M
| $84K | ﹤0.01% |
19,645
+12,623
| +180% | +$54K |
|
1192
PennantPark Floating Rate Capital
PFLT
$1.01B
| $84K | ﹤0.01% |
7,335
-7,929
| -52% | -$90.8K |
|
1193
United States Oil Fund
USO
$911M
| $84K | ﹤0.01% |
1,063
-29,873
| -97% | -$2.36M |
|
1194
ARK Autonomous Technology & Robotics ETF
ARKQ
$1.35B
| $83K | ﹤0.01% |
+1,507
| New | +$83K |
|
1195
GrowGeneration
GRWG
$103M
| $83K | ﹤0.01% |
39,031
-41,499
| -52% | -$88.2K |
|
|
PLYA
1196
DELISTED
Playa Hotels & Resorts
PLYA
| $83K | ﹤0.01% |
9,953
+116
| +1% | +$967 |
|
1197
ProShares UltraPro Russell2000
URTY
$401M
| $83K | ﹤0.01% |
+1,931
| New | +$83K |
|
1198
Alto Ingredients
ALTO
$91.3M
| $82K | ﹤0.01% |
56,861
-21,010
| -27% | -$30.3K |
|
1199
Cabot Corp
CBT
$4.2B
| $82K | ﹤0.01% |
897
+281
| +46% | +$25.7K |
|
1200
Eos Energy Enterprises
EOSE
$2.29B
| $82K | ﹤0.01% |
+64,659
| New | +$82K |
|