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 |
Advanced Micro Devices
AMD
|
$17.7M |
| 2 |
iShares MSCI EAFE ETF
EFA
|
$10.1M |
| 3 |
NIO
NIO
|
$7.66M |
| 4 |
Alibaba
BABA
|
$7.54M |
| 5 |
Micron Technology
MU
|
$6.73M |
Top Sells
| 1 |
NVIDIA
NVDA
|
$101M |
| 2 |
SPDR Gold Trust
GLD
|
$15.2M |
| 3 |
Amazon
AMZN
|
$9.5M |
| 4 |
SPDR S&P 500 ETF Trust
SPY
|
$8.76M |
| 5 |
Technology Select Sector SPDR Fund
XLK
|
$7.41M |
Sector Composition
| 1 | Technology | 18.66% |
| 2 | Consumer Discretionary | 14.99% |
| 3 | Communication Services | 10.06% |
| 4 | Healthcare | 9.68% |
| 5 | Financials | 9.59% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
251
Direxion Daily Semiconductor Bull 3X Shares
SOXL
$11.3B
| $2.43M | ﹤0.01% |
57,166
-1,371
| -2% | -$58.4K |
|
252
NetEase
NTES
$84.6B
| $2.43M | ﹤0.01% |
21,339
-482
| -2% | -$54.8K |
|
253
Cedar Fair
FUN
$2.52B
| $2.42M | ﹤0.01% |
53,329
| – | – |
|
254
Corsair Gaming
CRSR
$937M
| $2.41M | ﹤0.01% |
73,586
+1,149
| +2% | +$37.7K |
|
255
AvalonBay Communities
AVB
$27.8B
| $2.39M | ﹤0.01% |
11,331
| – | – |
|
|
HUYA
256
Huya Inc
HUYA
$805M
| $2.38M | ﹤0.01% |
138,025
-1,108
| -0.8% | -$19.1K |
|
257
CRISPR Therapeutics
CRSP
$4.9B
| $2.38M | ﹤0.01% |
15,186
+412
| +3% | +$64.5K |
|
258
FibroGen
FGEN
$47.5M
| $2.37M | ﹤0.01% |
3,581
-149
| -4% | -$98.7K |
|
259
Valero Energy
VLO
$48.1B
| $2.37M | ﹤0.01% |
30,410
-7,929
| -21% | -$617K |
|
260
Ball Corp
BALL
$13.8B
| $2.33M | ﹤0.01% |
28,250
+13,810
| +96% | +$1.14M |
|
261
Pool Corp
POOL
$12.4B
| $2.32M | ﹤0.01% |
5,026
-2
| -0% | -$924 |
|
262
Direxion Daily FTSE China Bull 3X Shares
YINN
$1.19B
| $2.31M | ﹤0.01% |
6,326
-5
| -0.1% | -$1.83K |
|
263
Celanese
CE
$5.27B
| $2.28M | ﹤0.01% |
14,891
-471
| -3% | -$72.1K |
|
264
SPDR Dow Jones Industrial Average ETF Trust
DIA
$39.8B
| $2.28M | ﹤0.01% |
6,579
-15,317
| -70% | -$5.3M |
|
265
Public Storage
PSA
$52B
| $2.28M | ﹤0.01% |
7,588
-119
| -2% | -$35.7K |
|
266
UiPath
PATH
$6.09B
| $2.27M | ﹤0.01% |
33,651
+1,830
| +6% | +$123K |
|
267
Vanguard Total Stock Market ETF
VTI
$527B
| $2.26M | ﹤0.01% |
10,078
+198
| +2% | +$44.3K |
|
268
Centene
CNC
$14.2B
| $2.25M | ﹤0.01% |
30,514
-242
| -0.8% | -$17.8K |
|
269
Direxion Daily Gold Miners Index Bull 2X Shares
NUGT
$851M
| $2.22M | ﹤0.01% |
38,317
-1,400
| -4% | -$81.2K |
|
270
BioNTech
BNTX
$27.2B
| $2.2M | ﹤0.01% |
9,839
-1,051
| -10% | -$235K |
|
271
Church & Dwight Co
CHD
$23.3B
| $2.2M | ﹤0.01% |
25,887
+400
| +2% | +$33.9K |
|
272
Agnico Eagle Mines
AEM
$76.4B
| $2.18M | ﹤0.01% |
36,099
+2
| +0% | +$121 |
|
273
Bank of New York Mellon
BK
$73B
| $2.17M | ﹤0.01% |
42,272
+1,460
| +4% | +$75.1K |
|
274
General Motors
GM
$55.6B
| $2.16M | ﹤0.01% |
36,596
-10,991
| -23% | -$650K |
|
275
Tower Semiconductor
TSEM
$7.03B
| $2.16M | ﹤0.01% |
73,649
+100
| +0.1% | +$2.94K |
|