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 Russell 2000 ETF
IWM
|
$27.5M |
| 2 |
SPDR Dow Jones Industrial Average ETF Trust
DIA
|
$16.3M |
| 3 |
Walt Disney
DIS
|
$13.9M |
| 4 |
iShares MSCI Emerging Markets ETF
EEM
|
$10.4M |
| 5 |
Gilead Sciences
GILD
|
$10.4M |
Top Sells
| 1 |
Alphabet (Google) Class C
GOOG
|
$95.3M |
| 2 |
Apple
AAPL
|
$21.1M |
| 3 |
Meta Platforms (Facebook)
META
|
$20M |
| 4 |
IBM
IBM
|
$13.4M |
| 5 |
Baidu
BIDU
|
$12.1M |
Sector Composition
| 1 | Healthcare | 13.63% |
| 2 | Communication Services | 9.81% |
| 3 | Consumer Discretionary | 9.7% |
| 4 | Technology | 9.67% |
| 5 | Financials | 9.48% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
|
TFCF
151
DELISTED
Twenty-First Century Fox, Inc. Class B
TFCF
| $799K | 0.06% |
+29,519
| New | +$799K |
|
152
Advance Auto Parts
AAP
$3.63B
| $793K | 0.06% |
+4,187
| New | +$793K |
|
153
Element Solutions
ESI
$6.33B
| $781K | 0.06% |
61,779
+61,311
| +13,101% | +$775K |
|
154
Direxion Daily S&P 500 Bull 3x Shares
SPXL
$5.49B
| $770K | 0.06% |
44,600
+43,468
| +3,840% | +$750K |
|
155
Target
TGT
$42.3B
| $769K | 0.06% |
9,780
+5,357
| +121% | +$421K |
|
|
HES
156
DELISTED
Hess
HES
| $765K | 0.06% |
15,297
+8,301
| +119% | +$415K |
|
|
ALDR
157
DELISTED
Alder Biopharmaceuticals, Inc.
ALDR
| $764K | 0.06% |
23,346
+21,268
| +1,023% | +$696K |
|
158
Intel
INTC
$107B
| $755K | 0.06% |
25,070
-110,403
| -81% | -$3.32M |
|
|
SCTY
159
DELISTED
SolarCity Corporation
SCTY
| $744K | 0.05% |
17,422
+8,899
| +104% | +$380K |
|
160
Puma Biotechnology
PBYI
$253M
| $739K | 0.05% |
9,810
+4,996
| +104% | +$376K |
|
|
VNET
161
VNET Group
VNET
$2.13B
| $732K | 0.05% |
40,049
+24,956
| +165% | +$456K |
|
162
Embraer
ERJ
$11.2B
| $729K | 0.05% |
28,534
+15,811
| +124% | +$404K |
|
163
Zimmer Biomet
ZBH
$20.9B
| $727K | 0.05% |
7,974
+3,817
| +92% | +$348K |
|
164
DTE Energy
DTE
$28.4B
| $711K | 0.05% |
10,396
-6,774
| -39% | -$463K |
|
165
Travelers Companies
TRV
$62B
| $711K | 0.05% |
7,146
+4,514
| +172% | +$449K |
|
166
American Tower
AMT
$92.9B
| $694K | 0.05% |
7,898
-15,057
| -66% | -$1.32M |
|
167
United States Natural Gas Fund
UNG
$615M
| $685K | 0.05% |
+3,688
| New | +$685K |
|
168
The Mosaic Company
MOS
$10.3B
| $682K | 0.05% |
21,951
-14,005
| -39% | -$435K |
|
169
Microsoft
MSFT
$3.68T
| $682K | 0.05% |
+15,429
| New | +$682K |
|
|
RSX
170
DELISTED
VanEck Russia ETF
RSX
| $681K | 0.05% |
43,436
-6,743
| -13% | -$106K |
|
171
Aon
AON
$79.9B
| $680K | 0.05% |
7,685
+449
| +6% | +$39.7K |
|
172
Philips
PHG
$26.5B
| $679K | 0.05% |
39,011
+38,580
| +8,951% | +$671K |
|
173
Delta Air Lines
DAL
$39.9B
| $671K | 0.05% |
14,969
-13,124
| -47% | -$588K |
|
174
SPDR S&P Homebuilders ETF
XHB
$2.01B
| $671K | 0.05% |
19,606
-5,280
| -21% | -$181K |
|
175
Yelp
YELP
$2.02B
| $664K | 0.05% |
30,676
-52,969
| -63% | -$1.15M |
|