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
|
$80M |
| 2 |
iShares 20+ Year Treasury Bond ETF
TLT
|
$45.3M |
| 3 |
Alphabet (Google) Class C
GOOG
|
$38.8M |
| 4 |
Amazon
AMZN
|
$38.6M |
| 5 |
Tesla
TSLA
|
$36M |
Top Sells
| 1 |
Alibaba
BABA
|
$46.4M |
| 2 |
Boeing
BA
|
$29.8M |
| 3 |
SPDR Gold Trust
GLD
|
$18.2M |
| 4 |
Biogen
BIIB
|
$15.8M |
| 5 |
NVIDIA
NVDA
|
$14.3M |
Sector Composition
| 1 | Technology | 22.73% |
| 2 | Consumer Discretionary | 17.54% |
| 3 | Communication Services | 10.03% |
| 4 | Healthcare | 9.29% |
| 5 | Industrials | 5.63% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
|
Y
151
DELISTED
Alleghany Corporation
Y
| $1.89M | ﹤0.01% |
2,359
-781
| -25% | -$624K |
|
|
ATH
152
DELISTED
Athene Holding Ltd. Class A Common Shares
ATH
| $1.88M | ﹤0.01% |
+40,023
| New | +$1.88M |
|
153
Liberty Global Class C
LBTYK
$4.14B
| $1.88M | ﹤0.01% |
86,280
+41,141
| +91% | +$896K |
|
154
General Mills
GIS
$26.5B
| $1.88M | ﹤0.01% |
35,080
+1,492
| +4% | +$79.9K |
|
|
AYX
155
DELISTED
Alteryx, Inc.
AYX
| $1.86M | ﹤0.01% |
18,609
+11,860
| +176% | +$1.19M |
|
|
MMP
156
DELISTED
Magellan Midstream Partners, L.P.
MMP
| $1.85M | ﹤0.01% |
+29,458
| New | +$1.85M |
|
157
Novo Nordisk
NVO
$249B
| $1.85M | ﹤0.01% |
63,936
+22,528
| +54% | +$652K |
|
158
Skyworks Solutions
SWKS
$11.1B
| $1.84M | ﹤0.01% |
+15,220
| New | +$1.84M |
|
159
CF Industries
CF
$13.6B
| $1.83M | ﹤0.01% |
38,331
+36,704
| +2,256% | +$1.75M |
|
160
D.R. Horton
DHI
$52.7B
| $1.83M | ﹤0.01% |
+34,607
| New | +$1.83M |
|
161
ProShares UltraPro Dow 30
UDOW
$726M
| $1.82M | ﹤0.01% |
29,366
+12,270
| +72% | +$761K |
|
162
Comcast
CMCSA
$125B
| $1.82M | ﹤0.01% |
+40,399
| New | +$1.82M |
|
163
Zymeworks
ZYME
$1.07B
| $1.79M | ﹤0.01% |
39,379
+23,547
| +149% | +$1.07M |
|
164
Targa Resources
TRGP
$35.8B
| $1.79M | ﹤0.01% |
43,788
+27,807
| +174% | +$1.13M |
|
|
BERY
165
DELISTED
Berry Global Group, Inc.
BERY
| $1.78M | ﹤0.01% |
+40,791
| New | +$1.78M |
|
166
VF Corp
VFC
$5.85B
| $1.76M | ﹤0.01% |
+17,693
| New | +$1.76M |
|
|
NBIS
167
Nebius Group N.V. Class A Ordinary Shares
NBIS
$15.5B
| $1.76M | ﹤0.01% |
40,519
+30,065
| +288% | +$1.31M |
|
168
Nektar Therapeutics
NKTR
$684M
| $1.75M | ﹤0.01% |
5,399
+2,149
| +66% | +$696K |
|
|
XYZ
169
Block, Inc.
XYZ
$46.2B
| $1.74M | ﹤0.01% |
27,820
-116,013
| -81% | -$7.26M |
|
170
Truist Financial
TFC
$60.7B
| $1.74M | ﹤0.01% |
+30,819
| New | +$1.74M |
|
|
WWE
171
DELISTED
World Wrestling Entertainment
WWE
| $1.73M | ﹤0.01% |
26,638
+14,223
| +115% | +$923K |
|
172
ASML
ASML
$296B
| $1.73M | ﹤0.01% |
+5,835
| New | +$1.73M |
|
173
Agilent Technologies
A
$36.4B
| $1.7M | ﹤0.01% |
19,974
-1,954
| -9% | -$167K |
|
174
Invesco DB US Dollar Index Bullish Fund
UUP
$175M
| $1.7M | ﹤0.01% |
+65,559
| New | +$1.7M |
|
|
WORK
175
DELISTED
Slack Technologies, Inc.
WORK
| $1.7M | ﹤0.01% |
+75,611
| New | +$1.7M |
|