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 |
Alibaba
BABA
|
+$117M |
| 2 |
Alphabet (Google) Class A
GOOGL
|
+$97.6M |
| 3 |
Walt Disney
DIS
|
+$73.4M |
| 4 |
Citigroup
C
|
+$45.8M |
| 5 |
KraneShares CSI China Internet ETF
KWEB
|
+$41.5M |
Top Sells
| 1 |
iShares 20+ Year Treasury Bond ETF
TLT
|
+$149M |
| 2 |
Amazon
AMZN
|
+$107M |
| 3 |
SPDR Gold Trust
GLD
|
+$58.6M |
| 4 |
Coinbase
COIN
|
+$56.5M |
| 5 |
NVIDIA
NVDA
|
+$48.2M |
Sector Composition
| 1 | Technology | 16.06% |
| 2 | Consumer Discretionary | 14.45% |
| 3 | Communication Services | 10.03% |
| 4 | Financials | 9.44% |
| 5 | Healthcare | 9.18% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
351
Syndax Pharmaceuticals
SNDX
$1.37B
| $1.38M | ﹤0.01% |
+64,030
| New | +$1.38M |
|
|
HA
352
DELISTED
Hawaiian Holdings, Inc.
HA
| $1.38M | ﹤0.01% |
97,358
+86,097
| +765% | +$1.22M |
|
353
Amkor Technology
AMKR
$6.15B
| $1.38M | ﹤0.01% |
+41,405
| New | +$1.38M |
|
354
Vanguard Value ETF
VTV
$143B
| $1.37M | ﹤0.01% |
+9,147
| New | +$1.37M |
|
355
Radware
RDWR
$1.1B
| $1.36M | ﹤0.01% |
81,811
+52,332
| +178% | +$873K |
|
|
INBX
356
DELISTED
Inhibrx, Inc. Common Stock
INBX
| $1.36M | ﹤0.01% |
35,861
+35,225
| +5,539% | +$1.34M |
|
357
BJ's Restaurants
BJRI
$726M
| $1.36M | ﹤0.01% |
37,822
+33,715
| +821% | +$1.21M |
|
358
Canadian National Railway
CNI
$58.2B
| $1.36M | ﹤0.01% |
10,816
+6,750
| +166% | +$847K |
|
359
Freedom Holding
FRHC
$10.2B
| $1.33M | ﹤0.01% |
16,559
-14,171
| -46% | -$1.14M |
|
360
Roivant Sciences
ROIV
$9.21B
| $1.33M | ﹤0.01% |
118,714
+116,009
| +4,289% | +$1.3M |
|
361
Global X Silver Miners ETF NEW
SIL
$3.01B
| $1.33M | ﹤0.01% |
47,005
+25,591
| +120% | +$726K |
|
362
Applovin
APP
$189B
| $1.33M | ﹤0.01% |
+33,259
| New | +$1.33M |
|
363
TopBuild
BLD
$11.8B
| $1.32M | ﹤0.01% |
+3,540
| New | +$1.32M |
|
|
PGTI
364
DELISTED
PGT, Inc.
PGTI
| $1.32M | ﹤0.01% |
32,409
+15,330
| +90% | +$624K |
|
365
ACM Research
ACMR
$1.79B
| $1.31M | ﹤0.01% |
+67,124
| New | +$1.31M |
|
366
ARK Web x.0 ETF
ARKW
$2.4B
| $1.31M | ﹤0.01% |
17,248
+7,730
| +81% | +$587K |
|
367
Xenon Pharmaceuticals
XENE
$2.89B
| $1.31M | ﹤0.01% |
28,387
+17,652
| +164% | +$813K |
|
368
Webster Financial
WBS
$10.2B
| $1.3M | ﹤0.01% |
25,678
+17,848
| +228% | +$906K |
|
369
Alerian MLP ETF
AMLP
$10.5B
| $1.29M | ﹤0.01% |
30,422
+21,887
| +256% | +$930K |
|
370
TAL Education Group
TAL
$6.47B
| $1.29M | ﹤0.01% |
+102,361
| New | +$1.29M |
|
371
Lamar Advertising Co
LAMR
$12.9B
| $1.29M | ﹤0.01% |
12,135
+5,711
| +89% | +$607K |
|
372
Eagle Materials
EXP
$7.42B
| $1.28M | ﹤0.01% |
6,303
+2,173
| +53% | +$441K |
|
373
Direxion Daily Small Cap Bull 3x Shares
TNA
$2.2B
| $1.27M | ﹤0.01% |
32,194
-38,449
| -54% | -$1.52M |
|
|
PXD
374
DELISTED
Pioneer Natural Resource Co.
PXD
| $1.27M | ﹤0.01% |
+5,640
| New | +$1.27M |
|
375
Saia
SAIA
$8.16B
| $1.26M | ﹤0.01% |
2,879
+231
| +9% | +$101K |
|