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 |
Apple
AAPL
|
$186M |
| 2 |
iShares 20+ Year Treasury Bond ETF
TLT
|
$86.2M |
| 3 |
SPDR S&P 500 ETF Trust
SPY
|
$56.8M |
| 4 |
iShares Silver Trust
SLV
|
$42.9M |
| 5 |
Advanced Micro Devices
AMD
|
$36.5M |
Top Sells
| 1 |
Occidental Petroleum
OXY
|
$44.4M |
| 2 |
Financial Select Sector SPDR Fund
XLF
|
$42.8M |
| 3 |
Verizon
VZ
|
$40.8M |
| 4 |
Direxion Daily S&P 500 Bull 3x Shares
SPXL
|
$33.6M |
| 5 |
iShares China Large-Cap ETF
FXI
|
$33M |
Sector Composition
| 1 | Technology | 23.31% |
| 2 | Consumer Discretionary | 13.02% |
| 3 | Industrials | 8.24% |
| 4 | Healthcare | 7.47% |
| 5 | Financials | 6.38% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
126
Lennar Class A
LEN
$34.7B
| $5.1M | ﹤0.01% |
+62,878
| New | +$5.1M |
|
127
Stellantis
STLA
$26.4B
| $4.91M | ﹤0.01% |
301,948
+160,254
| +113% | +$2.61M |
|
128
iShares MSCI Emerging Markets ETF
EEM
$19B
| $4.89M | ﹤0.01% |
+108,275
| New | +$4.89M |
|
129
GSK
GSK
$79.3B
| $4.83M | ﹤0.01% |
110,849
+73,266
| +195% | +$3.19M |
|
130
Zimmer Biomet
ZBH
$20.8B
| $4.83M | ﹤0.01% |
+37,730
| New | +$4.83M |
|
131
Direxion Daily Technology Bull 3x Shares
TECL
$3.42B
| $4.81M | ﹤0.01% |
78,227
+16,076
| +26% | +$988K |
|
132
Beyond Meat
BYND
$178M
| $4.79M | ﹤0.01% |
99,159
-3,298
| -3% | -$159K |
|
133
Atlassian
TEAM
$44.8B
| $4.77M | ﹤0.01% |
16,219
-5,734
| -26% | -$1.68M |
|
134
AdvisorShares Pure US Cannabis ETF
MSOS
$816M
| $4.74M | ﹤0.01% |
227,191
+85,262
| +60% | +$1.78M |
|
135
Cardinal Health
CAH
$36B
| $4.7M | ﹤0.01% |
82,969
+58,482
| +239% | +$3.32M |
|
136
American Express
AXP
$225B
| $4.63M | ﹤0.01% |
+24,769
| New | +$4.63M |
|
137
XPeng
XPEV
$19.3B
| $4.59M | ﹤0.01% |
166,435
+91,317
| +122% | +$2.52M |
|
138
Danaher
DHR
$143B
| $4.57M | ﹤0.01% |
15,582
+9,452
| +154% | +$2.77M |
|
139
Ventas
VTR
$30.7B
| $4.56M | ﹤0.01% |
73,905
+27,344
| +59% | +$1.69M |
|
140
Peloton Interactive
PTON
$3.1B
| $4.53M | ﹤0.01% |
171,281
-64,200
| -27% | -$1.7M |
|
141
Bank of New York Mellon
BK
$73.8B
| $4.42M | ﹤0.01% |
+89,153
| New | +$4.42M |
|
142
General Motors
GM
$55B
| $4.41M | ﹤0.01% |
100,818
-120,942
| -55% | -$5.29M |
|
143
EPAM Systems
EPAM
$9.69B
| $4.39M | ﹤0.01% |
14,805
+14,107
| +2,021% | +$4.18M |
|
|
AUY
144
DELISTED
Yamana Gold, Inc.
AUY
| $4.39M | ﹤0.01% |
786,434
+72,027
| +10% | +$402K |
|
|
ZEN
145
DELISTED
ZENDESK INC
ZEN
| $4.37M | ﹤0.01% |
36,356
-35,040
| -49% | -$4.21M |
|
|
VNE
146
DELISTED
Veoneer, Inc.
VNE
| $4.37M | ﹤0.01% |
118,298
+91,440
| +340% | +$3.38M |
|
147
Kohl's
KSS
$1.78B
| $4.36M | ﹤0.01% |
72,161
-76,497
| -51% | -$4.62M |
|
148
Consumers Staples Select Sector SPDR Fund
XLP
$15.8B
| $4.33M | ﹤0.01% |
+57,061
| New | +$4.33M |
|
149
Match Group
MTCH
$9.04B
| $4.29M | ﹤0.01% |
+39,428
| New | +$4.29M |
|
150
Foot Locker
FL
$2.3B
| $4.24M | ﹤0.01% |
142,887
+100,068
| +234% | +$2.97M |
|