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
|
$158M |
| 2 |
Invesco QQQ Trust
QQQ
|
$69.1M |
| 3 |
Meta Platforms (Facebook)
META
|
$57.4M |
| 4 |
Citigroup
C
|
$23.4M |
| 5 |
Goldman Sachs
GS
|
$23M |
Top Sells
| 1 |
Apple
AAPL
|
$49.8M |
| 2 |
Berkshire Hathaway Class B
BRK.B
|
$43.2M |
| 3 |
SPDR Dow Jones Industrial Average ETF Trust
DIA
|
$42.2M |
| 4 |
Micron Technology
MU
|
$26.1M |
| 5 |
Adobe
ADBE
|
$21M |
Sector Composition
| 1 | Consumer Discretionary | 20.63% |
| 2 | Communication Services | 16.3% |
| 3 | Technology | 12.42% |
| 4 | Industrials | 9.24% |
| 5 | Healthcare | 8.11% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
|
JOYY
126
JOYY Inc. American Depositary Shares
JOYY
$3.19B
| $2.43M | 0.01% |
+32,380
| New | +$2.43M |
|
127
United Rentals
URI
$62.1B
| $2.42M | 0.01% |
14,778
+11,604
| +366% | +$1.9M |
|
|
BRSL
128
Brightstar Lottery PLC
BRSL
$3.17B
| $2.41M | 0.01% |
122,122
+99,527
| +440% | +$1.96M |
|
129
IAC Inc
IAC
$2.95B
| $2.41M | 0.01% |
62,204
-4,393
| -7% | -$170K |
|
130
Yelp
YELP
$2B
| $2.39M | 0.01% |
+48,620
| New | +$2.39M |
|
131
Atlassian
TEAM
$44.1B
| $2.35M | 0.01% |
24,442
+12,385
| +103% | +$1.19M |
|
132
Automatic Data Processing
ADP
$122B
| $2.34M | 0.01% |
+15,557
| New | +$2.34M |
|
133
SAP
SAP
$317B
| $2.33M | 0.01% |
18,966
+388
| +2% | +$47.7K |
|
134
Freeport-McMoran
FCX
$66.1B
| $2.33M | 0.01% |
167,131
+153,825
| +1,156% | +$2.14M |
|
135
Macy's
M
$4.61B
| $2.3M | 0.01% |
+66,092
| New | +$2.3M |
|
|
DNB
136
DELISTED
Dun & Bradstreet
DNB
| $2.27M | 0.01% |
15,895
+8,651
| +119% | +$1.23M |
|
137
Assurant
AIZ
$10.9B
| $2.26M | 0.01% |
20,943
+1,053
| +5% | +$114K |
|
|
RDS.A
138
DELISTED
Royal Dutch Shell PLC ADS Class A
RDS.A
| $2.25M | 0.01% |
33,007
+31,850
| +2,753% | +$2.17M |
|
|
MOMO
139
Hello Group
MOMO
$1.34B
| $2.25M | 0.01% |
51,325
-4,809
| -9% | -$211K |
|
140
MongoDB
MDB
$26.2B
| $2.24M | 0.01% |
27,511
+27,335
| +15,531% | +$2.23M |
|
141
Intel
INTC
$108B
| $2.19M | 0.01% |
+46,382
| New | +$2.19M |
|
142
Radware
RDWR
$1.06B
| $2.18M | 0.01% |
82,298
-23,912
| -23% | -$633K |
|
143
General Motors
GM
$55.4B
| $2.17M | 0.01% |
64,568
-37,158
| -37% | -$1.25M |
|
144
Invesco CurrencyShares Japanese Yen Trust
FXY
$558M
| $2.16M | 0.01% |
+25,634
| New | +$2.16M |
|
145
Marvell Technology
MRVL
$55.3B
| $2.15M | 0.01% |
111,342
+9,456
| +9% | +$182K |
|
146
General Mills
GIS
$26.5B
| $2.14M | 0.01% |
49,916
-4,613
| -8% | -$198K |
|
|
BMS
147
DELISTED
Bemis
BMS
| $2.13M | 0.01% |
43,737
+5,357
| +14% | +$260K |
|
148
Wayfair
W
$10.7B
| $2.12M | 0.01% |
14,342
+8,683
| +153% | +$1.28M |
|
149
Zions Bancorporation
ZION
$8.58B
| $2.11M | 0.01% |
42,040
+6,928
| +20% | +$347K |
|
150
Direxion Daily Small Cap Bull 3x Shares
TNA
$2.21B
| $2.1M | 0.01% |
23,460
-24,936
| -52% | -$2.23M |
|