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 |
Alibaba
BABA
|
+$117M |
| 2 |
Alphabet (Google) Class A
GOOGL
|
+$97.6M |
| 3 |
Walt Disney
DIS
|
+$73.4M |
| 4 |
Citigroup
C
|
+$45.8M |
| 5 |
KraneShares CSI China Internet ETF
KWEB
|
+$41.5M |
Top Sells
| 1 |
iShares 20+ Year Treasury Bond ETF
TLT
|
+$149M |
| 2 |
Amazon
AMZN
|
+$107M |
| 3 |
SPDR Gold Trust
GLD
|
+$58.6M |
| 4 |
Coinbase
COIN
|
+$56.5M |
| 5 |
NVIDIA
NVDA
|
+$48.2M |
Sector Composition
| 1 | Technology | 16.06% |
| 2 | Consumer Discretionary | 14.45% |
| 3 | Communication Services | 10.03% |
| 4 | Financials | 9.44% |
| 5 | Healthcare | 9.18% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
1126
Inspired Entertainment
INSE
$253M
| $120K | ﹤0.01% |
12,229
+9,952
| +437% | +$97.7K |
|
|
FUSN
1127
DELISTED
Fusion Pharmaceuticals Inc. Common Shares
FUSN
| $120K | ﹤0.01% |
12,501
+12,422
| +15,724% | +$119K |
|
1128
American Outdoor Brands
AOUT
$111M
| $119K | ﹤0.01% |
14,251
+14,194
| +24,902% | +$119K |
|
1129
Direxion Daily Gold Miners Index Bear 2X Shares
DUST
$56.8M
| $119K | ﹤0.01% |
1,169
-4,367
| -79% | -$445K |
|
1130
Goosehead Insurance
GSHD
$2.05B
| $119K | ﹤0.01% |
+1,583
| New | +$119K |
|
1131
Knife River
KNF
$4.42B
| $119K | ﹤0.01% |
1,800
+244
| +16% | +$16.1K |
|
1132
SPDR Portfolio S&P 500 Value ETF
SPYV
$28.4B
| $119K | ﹤0.01% |
+2,565
| New | +$119K |
|
|
SWTX
1133
DELISTED
SpringWorks Therapeutics
SWTX
| $119K | ﹤0.01% |
3,261
+2,794
| +598% | +$102K |
|
1134
Ameresco
AMRC
$1.44B
| $118K | ﹤0.01% |
3,733
-473
| -11% | -$15K |
|
|
PDS
1135
Precision Drilling
PDS
$765M
| $118K | ﹤0.01% |
+2,187
| New | +$118K |
|
1136
ALX Oncology
ALXO
$56.8M
| $117K | ﹤0.01% |
7,880
-1,580
| -17% | -$23.5K |
|
1137
Arista Networks
ANET
$175B
| $117K | ﹤0.01% |
+1,992
| New | +$117K |
|
1138
Nkarta
NKTX
$140M
| $117K | ﹤0.01% |
17,877
+6,602
| +59% | +$43.2K |
|
1139
Rio Tinto
RIO
$101B
| $117K | ﹤0.01% |
1,580
-61,221
| -97% | -$4.53M |
|
1140
Douglas Emmett
DEI
$2.79B
| $116K | ﹤0.01% |
8,027
-4,752
| -37% | -$68.7K |
|
1141
Accel Entertainment
ACEL
$938M
| $115K | ﹤0.01% |
11,269
-30,170
| -73% | -$308K |
|
1142
Renaissance IPO ETF
IPO
$182M
| $115K | ﹤0.01% |
+3,053
| New | +$115K |
|
1143
Perimeter Solutions
PRM
$3.26B
| $115K | ﹤0.01% |
+25,040
| New | +$115K |
|
1144
Strategic Education
STRA
$1.98B
| $115K | ﹤0.01% |
+1,247
| New | +$115K |
|
|
JWN
1145
DELISTED
Nordstrom
JWN
| $113K | ﹤0.01% |
6,141
-25,058
| -80% | -$461K |
|
|
SUPV
1146
Grupo Supervielle
SUPV
$484M
| $112K | ﹤0.01% |
+27,748
| New | +$112K |
|
|
AY
1147
DELISTED
Atlantica Sustainable Infrastructure plc Ordinary Shares
AY
| $112K | ﹤0.01% |
5,229
-12,825
| -71% | -$275K |
|
1148
Gannett
GCI
$620M
| $111K | ﹤0.01% |
48,520
+10,556
| +28% | +$24.1K |
|
1149
iShares S&P India Nifty 50 Index Fund
INDY
$652M
| $110K | ﹤0.01% |
2,240
+1,954
| +683% | +$96K |
|
1150
Mitsubishi UFJ Financial
MUFG
$177B
| $110K | ﹤0.01% |
12,813
+3,603
| +39% | +$30.9K |
|