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 |
iShares 20+ Year Treasury Bond ETF
TLT
|
$278M |
| 2 |
Alphabet (Google) Class A
GOOGL
|
$84.4M |
| 3 |
NVIDIA
NVDA
|
$76.9M |
| 4 |
TSMC
TSM
|
$74.9M |
| 5 |
Amazon
AMZN
|
$53.5M |
Top Sells
| 1 |
Apple
AAPL
|
$497M |
| 2 |
Strategy Inc Common Stock Class A
MSTR
|
$73.7M |
| 3 |
Alibaba
BABA
|
$49M |
| 4 |
Advanced Micro Devices
AMD
|
$48.1M |
| 5 |
Uber
UBER
|
$41.8M |
Sector Composition
| 1 | Technology | 22.9% |
| 2 | Consumer Discretionary | 12.26% |
| 3 | Healthcare | 9.52% |
| 4 | Communication Services | 8.42% |
| 5 | Financials | 7.07% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
126
IBM
IBM
$232B
| $3.89M | ﹤0.01% |
+15,625
| New | +$3.89M |
|
127
Celsius Holdings
CELH
$15B
| $3.87M | ﹤0.01% |
108,690
-428,404
| -80% | -$15.3M |
|
128
Chewy
CHWY
$17.5B
| $3.74M | ﹤0.01% |
115,156
-2,664
| -2% | -$86.6K |
|
129
ICICI Bank
IBN
$113B
| $3.68M | ﹤0.01% |
116,892
+58,822
| +101% | +$1.85M |
|
130
NuScale Power
SMR
$4.62B
| $3.63M | ﹤0.01% |
256,248
+25,463
| +11% | +$361K |
|
131
AES
AES
$9.21B
| $3.63M | ﹤0.01% |
291,962
+66,724
| +30% | +$829K |
|
132
Danaher
DHR
$143B
| $3.6M | ﹤0.01% |
17,549
-43,915
| -71% | -$9M |
|
133
CleanSpark
CLSK
$2.6B
| $3.56M | ﹤0.01% |
529,643
-457,439
| -46% | -$3.07M |
|
134
Enovix
ENVX
$1.81B
| $3.55M | ﹤0.01% |
553,426
+353,765
| +177% | +$2.27M |
|
135
Vistra
VST
$63.7B
| $3.49M | ﹤0.01% |
29,711
+900
| +3% | +$106K |
|
136
Eos Energy Enterprises
EOSE
$2.01B
| $3.44M | ﹤0.01% |
910,716
+860,629
| +1,718% | +$3.25M |
|
137
Philips
PHG
$26.5B
| $3.36M | ﹤0.01% |
137,694
+130,258
| +1,752% | +$3.17M |
|
138
Salesforce
CRM
$239B
| $3.35M | ﹤0.01% |
12,498
-15,705
| -56% | -$4.21M |
|
139
NextDecade
NEXT
$2.8B
| $3.34M | ﹤0.01% |
429,322
+33,685
| +9% | +$262K |
|
140
Zoetis
ZTS
$67.9B
| $3.33M | ﹤0.01% |
20,229
+7,872
| +64% | +$1.3M |
|
141
Capri Holdings
CPRI
$2.53B
| $3.18M | ﹤0.01% |
+161,008
| New | +$3.18M |
|
142
Thermo Fisher Scientific
TMO
$186B
| $3.11M | ﹤0.01% |
6,244
+4,691
| +302% | +$2.33M |
|
143
MSCI
MSCI
$42.9B
| $3.1M | ﹤0.01% |
+5,490
| New | +$3.1M |
|
144
Utilities Select Sector SPDR Fund
XLU
$20.7B
| $3.1M | ﹤0.01% |
39,277
-115,694
| -75% | -$9.12M |
|
145
Elbit Systems
ESLT
$22.3B
| $3.04M | ﹤0.01% |
7,918
+6,862
| +650% | +$2.63M |
|
146
Freeport-McMoran
FCX
$66.5B
| $3.02M | ﹤0.01% |
79,758
-180,775
| -69% | -$6.84M |
|
147
Roku
ROKU
$14B
| $3.02M | ﹤0.01% |
42,853
-79,206
| -65% | -$5.58M |
|
148
Gartner
IT
$18.6B
| $3M | ﹤0.01% |
7,154
+6,856
| +2,301% | +$2.88M |
|
149
Burlington
BURL
$18.4B
| $2.96M | ﹤0.01% |
12,438
+7,076
| +132% | +$1.69M |
|
150
Viking Therapeutics
VKTX
$3.03B
| $2.96M | ﹤0.01% |
122,755
+90,614
| +282% | +$2.19M |
|