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 |
Energy Select Sector SPDR Fund
XLE
|
+$93.9M |
| 2 |
Pfizer
PFE
|
+$89.5M |
| 3 |
Boeing
BA
|
+$66.7M |
| 4 |
Intel
INTC
|
+$60.2M |
| 5 |
Meta Platforms (Facebook)
META
|
+$52.5M |
Top Sells
| 1 |
NVIDIA
NVDA
|
+$146M |
| 2 |
Alphabet (Google) Class A
GOOGL
|
+$109M |
| 3 |
Alibaba
BABA
|
+$81.8M |
| 4 |
Walt Disney
DIS
|
+$80.2M |
| 5 |
Citigroup
C
|
+$55.3M |
Sector Composition
| 1 | Technology | 19.03% |
| 2 | Healthcare | 13.86% |
| 3 | Consumer Discretionary | 12.44% |
| 4 | Industrials | 8.48% |
| 5 | Communication Services | 7.95% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
1126
Grab
GRAB
$25.9B
| $127K | ﹤0.01% |
40,615
+14,269
| +54% | +$44.6K |
|
1127
Orthofix Medical
OFIX
$611M
| $126K | ﹤0.01% |
8,732
+8,012
| +1,113% | +$116K |
|
1128
Spire Global
SPIR
$313M
| $126K | ﹤0.01% |
10,500
+4,896
| +87% | +$58.8K |
|
1129
QuidelOrtho
QDEL
$2.02B
| $125K | ﹤0.01% |
+2,621
| New | +$125K |
|
1130
Qualys
QLYS
$4.9B
| $125K | ﹤0.01% |
+753
| New | +$125K |
|
1131
VanEck Digital Transformation ETF
DAPP
$346M
| $124K | ﹤0.01% |
10,720
+3,389
| +46% | +$39.2K |
|
1132
iShares US Industrials ETF
IYJ
$1.68B
| $124K | ﹤0.01% |
+994
| New | +$124K |
|
|
SLRN
1133
DELISTED
ACELYRIN
SLRN
| $124K | ﹤0.01% |
+18,429
| New | +$124K |
|
1134
Sabre
SABR
$754M
| $123K | ﹤0.01% |
+51,154
| New | +$123K |
|
|
ACRE
1135
Ares Commercial Real Estate
ACRE
$266M
| $123K | ﹤0.01% |
16,601
+9,072
| +120% | +$67.2K |
|
1136
Pacific Biosciences
PACB
$384M
| $123K | ﹤0.01% |
33,006
-293,785
| -90% | -$1.09M |
|
1137
Verint Systems
VRNT
$1.22B
| $123K | ﹤0.01% |
3,724
-5,704
| -61% | -$188K |
|
1138
Joby Aviation
JOBY
$12.5B
| $122K | ﹤0.01% |
22,838
-82,675
| -78% | -$442K |
|
1139
Sunoco
SUN
$6.86B
| $122K | ﹤0.01% |
+2,025
| New | +$122K |
|
1140
Telefonica
TEF
$29.7B
| $122K | ﹤0.01% |
27,758
+25,343
| +1,049% | +$111K |
|
|
VERV
1141
DELISTED
Verve Therapeutics
VERV
| $122K | ﹤0.01% |
+9,215
| New | +$122K |
|
|
SMC
1142
Summit Midstream Corporation
SMC
$285M
| $122K | ﹤0.01% |
4,372
+3,645
| +501% | +$102K |
|
1143
Agree Realty
ADC
$7.92B
| $121K | ﹤0.01% |
+2,124
| New | +$121K |
|
1144
AtriCure
ATRC
$1.82B
| $121K | ﹤0.01% |
+3,991
| New | +$121K |
|
1145
Codexis
CDXS
$225M
| $121K | ﹤0.01% |
34,950
-5,164
| -13% | -$17.9K |
|
1146
iShares MSCI Australia ETF
EWA
$1.53B
| $121K | ﹤0.01% |
+4,924
| New | +$121K |
|
1147
Huron Consulting
HURN
$2.49B
| $120K | ﹤0.01% |
+1,247
| New | +$120K |
|
1148
Kamada
KMDA
$400M
| $120K | ﹤0.01% |
21,568
+14,563
| +208% | +$81K |
|
1149
Liberty Latin America Class C
LILAK
$1.66B
| $120K | ﹤0.01% |
+17,270
| New | +$120K |
|
1150
Alliant Energy
LNT
$16.4B
| $120K | ﹤0.01% |
2,385
-265
| -10% | -$13.3K |
|