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 |
Amazon
AMZN
|
$144M |
| 2 |
Invesco QQQ Trust
QQQ
|
$68.7M |
| 3 |
AT&T
T
|
$45.5M |
| 4 |
Meta Platforms (Facebook)
META
|
$38M |
| 5 |
iShares MSCI Emerging Markets ETF
EEM
|
$35.4M |
Top Sells
| 1 |
Microsoft
MSFT
|
$94.2M |
| 2 |
Citigroup
C
|
$62.3M |
| 3 |
JPMorgan Chase
JPM
|
$56.2M |
| 4 |
Berkshire Hathaway Class B
BRK.B
|
$45.8M |
| 5 |
SPDR Gold Trust
GLD
|
$44.4M |
Sector Composition
| 1 | Consumer Discretionary | 16.85% |
| 2 | Technology | 15.5% |
| 3 | Communication Services | 10.53% |
| 4 | Healthcare | 8.8% |
| 5 | Consumer Staples | 5.63% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
151
Vanguard S&P 500 ETF
VOO
$727B
| $2.58M | ﹤0.01% |
7,332
-31,521
| -81% | -$11.1M |
|
|
VRAY
152
DELISTED
ViewRay, Inc.
VRAY
| $2.57M | ﹤0.01% |
573,014
+253,430
| +79% | +$1.14M |
|
153
iShares JPMorgan USD Emerging Markets Bond ETF
EMB
$13.4B
| $2.56M | ﹤0.01% |
+30,219
| New | +$2.56M |
|
154
Health Care Select Sector SPDR Fund
XLV
$33.8B
| $2.48M | ﹤0.01% |
18,285
-23,862
| -57% | -$3.24M |
|
155
Cardinal Health
CAH
$35.7B
| $2.46M | ﹤0.01% |
32,010
-25,611
| -44% | -$1.97M |
|
156
SoFi Technologies
SOFI
$30.1B
| $2.44M | ﹤0.01% |
530,222
-308,384
| -37% | -$1.42M |
|
157
AbbVie
ABBV
$375B
| $2.43M | ﹤0.01% |
15,043
-25,915
| -63% | -$4.19M |
|
158
Arch Capital
ACGL
$34.5B
| $2.42M | ﹤0.01% |
38,603
+30,182
| +358% | +$1.89M |
|
159
Cheniere Energy
LNG
$52.1B
| $2.41M | ﹤0.01% |
+16,056
| New | +$2.41M |
|
160
Applovin
APP
$169B
| $2.39M | ﹤0.01% |
+226,796
| New | +$2.39M |
|
161
SPDR S&P Metals & Mining ETF
XME
$2.28B
| $2.38M | ﹤0.01% |
47,824
-12,361
| -21% | -$616K |
|
162
Apple
AAPL
$3.53T
| $2.34M | ﹤0.01% |
18,000
+1,300
| +8% | +$169K |
|
163
Wells Fargo
WFC
$263B
| $2.34M | ﹤0.01% |
56,601
-296,240
| -84% | -$12.2M |
|
|
ATVI
164
DELISTED
Activision Blizzard Inc.
ATVI
| $2.34M | ﹤0.01% |
30,513
+8,392
| +38% | +$642K |
|
165
Spirit AeroSystems
SPR
$4.83B
| $2.29M | ﹤0.01% |
77,489
+29,705
| +62% | +$879K |
|
|
FRC
166
DELISTED
First Republic Bank
FRC
| $2.29M | ﹤0.01% |
+18,763
| New | +$2.29M |
|
167
Celsius Holdings
CELH
$15.7B
| $2.26M | ﹤0.01% |
65,307
-26,538
| -29% | -$920K |
|
168
Tapestry
TPR
$21.8B
| $2.21M | ﹤0.01% |
58,149
+18,196
| +46% | +$693K |
|
|
BERY
169
DELISTED
Berry Global Group, Inc.
BERY
| $2.2M | ﹤0.01% |
39,656
-30,983
| -44% | -$1.72M |
|
170
Hilton Worldwide
HLT
$65.2B
| $2.18M | ﹤0.01% |
+17,257
| New | +$2.18M |
|
171
Lennar Class A
LEN
$35.5B
| $2.17M | ﹤0.01% |
24,713
-5,708
| -19% | -$500K |
|
172
United States Natural Gas Fund
UNG
$623M
| $2.17M | ﹤0.01% |
38,401
+17,539
| +84% | +$989K |
|
173
Harley-Davidson
HOG
$3.63B
| $2.16M | ﹤0.01% |
+51,878
| New | +$2.16M |
|
174
Global X Lithium & Battery Tech ETF
LIT
$1.07B
| $2.14M | ﹤0.01% |
36,460
-40,130
| -52% | -$2.35M |
|
175
Alnylam Pharmaceuticals
ALNY
$59.7B
| $2.11M | ﹤0.01% |
8,877
+8,868
| +98,533% | +$2.11M |
|