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 | |
|---|---|---|---|---|---|---|
|
ATCO
576
DELISTED
Atlas Corp.
ATCO
| $917K | ﹤0.01% |
64,442
+7,306
| +13% | +$104K |
|
|
BFX
577
DELISTED
BowFlex Inc.
BFX
| $915K | ﹤0.01% |
55,914
| – | – |
|
578
Lowe's Companies
LOW
$151B
| $913K | ﹤0.01% |
4,664
-4,324
| -48% | -$846K |
|
579
Crown Castle
CCI
$41.9B
| $908K | ﹤0.01% |
4,668
| – | – |
|
580
Hain Celestial
HAIN
$164M
| $907K | ﹤0.01% |
22,630
+1,761
| +8% | +$70.6K |
|
581
GrafTech
EAF
$256M
| $906K | ﹤0.01% |
7,832
| – | – |
|
582
Enova International
ENVA
$3.01B
| $903K | ﹤0.01% |
26,070
| – | – |
|
583
Toro Company
TTC
$7.99B
| $903K | ﹤0.01% |
8,168
| – | – |
|
584
iShares MSCI Germany ETF
EWG
$2.51B
| $901K | ﹤0.01% |
25,989
| – | – |
|
585
Ionis Pharmaceuticals
IONS
$9.76B
| $901K | ﹤0.01% |
22,512
+1,158
| +5% | +$46.3K |
|
586
Teucrium Soybean Fund
SOYB
$25.2M
| $901K | ﹤0.01% |
37,956
| – | – |
|
587
iShares MSCI United Kingdom ETF
EWU
$2.9B
| $897K | ﹤0.01% |
27,261
| – | – |
|
588
Outfront Media
OUT
$3.05B
| $895K | ﹤0.01% |
37,544
+1,121
| +3% | +$26.7K |
|
589
Barclays
BCS
$69.1B
| $893K | ﹤0.01% |
91,070
| – | – |
|
590
Kinder Morgan
KMI
$59.1B
| $892K | ﹤0.01% |
48,402
-15,672
| -24% | -$289K |
|
|
PING
591
DELISTED
Ping Identity Holding Corp.
PING
| $892K | ﹤0.01% |
38,354
+109
| +0.3% | +$2.54K |
|
592
Frontline
FRO
$4.93B
| $885K | ﹤0.01% |
101,829
-15,269
| -13% | -$133K |
|
593
Calumet Specialty Products
CLMT
$1.55B
| $881K | ﹤0.01% |
122,201
+990
| +0.8% | +$7.14K |
|
594
Dynavax Technologies
DVAX
$1.18B
| $878K | ﹤0.01% |
85,857
-13,500
| -14% | -$138K |
|
595
The RealReal
REAL
$999M
| $877K | ﹤0.01% |
43,028
+1,020
| +2% | +$20.8K |
|
596
Scorpio Tankers
STNG
$2.71B
| $876K | ﹤0.01% |
40,594
-11,362
| -22% | -$245K |
|
597
Valaris
VAL
$3.64B
| $876K | ﹤0.01% |
29,574
| – | – |
|
598
GFL Environmental
GFL
$17.4B
| $868K | ﹤0.01% |
26,965
| – | – |
|
599
Global X Copper Miners ETF NEW
COPX
$2.13B
| $866K | ﹤0.01% |
23,422
| – | – |
|
600
Encore Capital Group
ECPG
$1.02B
| $863K | ﹤0.01% |
18,025
| – | – |
|