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 | |
|---|---|---|---|---|---|---|
126
ProShares UltraShort Bloomberg Natural Gas
KOLD
$185M
| $5.61M | ﹤0.01% |
71,582
+190
| +0.3% | +$14.9K |
|
127
iShares MSCI EAFE ETF
EFA
$67.1B
| $5.6M | ﹤0.01% |
70,145
-73,222
| -51% | -$5.85M |
|
128
D.R. Horton
DHI
$50.2B
| $5.52M | ﹤0.01% |
33,535
+30,726
| +1,094% | +$5.06M |
|
129
lululemon athletica
LULU
$20.1B
| $5.49M | ﹤0.01% |
14,052
+10,489
| +294% | +$4.1M |
|
130
Li Auto
LI
$26.1B
| $5.48M | ﹤0.01% |
181,048
+8,052
| +5% | +$244K |
|
131
UiPath
PATH
$6.3B
| $5.44M | ﹤0.01% |
+240,062
| New | +$5.44M |
|
132
Enphase Energy
ENPH
$5.02B
| $5.4M | ﹤0.01% |
44,647
-35,821
| -45% | -$4.33M |
|
133
Teck Resources
TECK
$19.2B
| $5.39M | ﹤0.01% |
117,830
-602
| -0.5% | -$27.6K |
|
134
Workday
WDAY
$62.4B
| $5.35M | ﹤0.01% |
+19,630
| New | +$5.35M |
|
135
Carvana
CVNA
$54.1B
| $5.31M | ﹤0.01% |
+60,394
| New | +$5.31M |
|
136
iShares MSCI Brazil ETF
EWZ
$5.71B
| $5.1M | ﹤0.01% |
+157,247
| New | +$5.1M |
|
137
SPDR S&P Homebuilders ETF
XHB
$1.89B
| $5.05M | ﹤0.01% |
45,248
+17,119
| +61% | +$1.91M |
|
138
e.l.f. Beauty
ELF
$7.94B
| $5.02M | ﹤0.01% |
25,622
+14,334
| +127% | +$2.81M |
|
139
Zions Bancorporation
ZION
$8.67B
| $5M | ﹤0.01% |
115,128
+1,039
| +0.9% | +$45.1K |
|
140
Pan American Silver
PAAS
$15.4B
| $4.95M | ﹤0.01% |
328,153
+98,588
| +43% | +$1.49M |
|
141
Twilio
TWLO
$16.3B
| $4.95M | ﹤0.01% |
80,914
-30,063
| -27% | -$1.84M |
|
142
Deere & Co
DE
$127B
| $4.93M | ﹤0.01% |
+11,994
| New | +$4.93M |
|
143
Halliburton
HAL
$19.2B
| $4.92M | ﹤0.01% |
124,734
-75,012
| -38% | -$2.96M |
|
144
Caesars Entertainment
CZR
$5.32B
| $4.87M | ﹤0.01% |
111,349
+10,121
| +10% | +$443K |
|
145
Charter Communications
CHTR
$35.9B
| $4.81M | ﹤0.01% |
+16,547
| New | +$4.81M |
|
146
Vertex Pharmaceuticals
VRTX
$98.2B
| $4.78M | ﹤0.01% |
+11,435
| New | +$4.78M |
|
147
Viking Therapeutics
VKTX
$2.86B
| $4.76M | ﹤0.01% |
+57,999
| New | +$4.76M |
|
148
Direxion Daily FTSE China Bull 3X Shares
YINN
$1.16B
| $4.69M | ﹤0.01% |
+245,623
| New | +$4.69M |
|
149
Salesforce
CRM
$235B
| $4.59M | ﹤0.01% |
15,255
-138,432
| -90% | -$41.7M |
|
150
Citizens Financial Group
CFG
$23.1B
| $4.57M | ﹤0.01% |
125,924
+112,453
| +835% | +$4.08M |
|