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 | |
|---|---|---|---|---|---|---|
|
CBL
651
CBL Properties
CBL
$1B
| $497K | ﹤0.01% |
+20,373
| New | +$497K |
|
652
ProShares UltraPro Short S&P 500
SPXU
$506M
| $496K | ﹤0.01% |
11,556
-26,033
| -69% | -$1.12M |
|
653
eGain
EGAN
$210M
| $490K | ﹤0.01% |
58,833
+53,350
| +973% | +$444K |
|
654
Meritage Homes
MTH
$5.7B
| $490K | ﹤0.01% |
5,632
-28,274
| -83% | -$2.46M |
|
655
Sundial Growers
SNDL
$618M
| $490K | ﹤0.01% |
298,877
+139,256
| +87% | +$228K |
|
|
VLRS
656
Controladora Vuela Compañía de Aviación
VLRS
$722M
| $490K | ﹤0.01% |
52,258
+44,420
| +567% | +$417K |
|
657
GigaCloud Technology
GCT
$1.11B
| $487K | ﹤0.01% |
+26,667
| New | +$487K |
|
658
Mercer International
MERC
$207M
| $486K | ﹤0.01% |
51,326
-51,396
| -50% | -$487K |
|
659
-1x Short VIX Futures ETF
SVIX
$195M
| $486K | ﹤0.01% |
12,887
-7,383
| -36% | -$278K |
|
660
PIMCO 15+ Year US TIPS Index Exchange-Traded Fund
LTPZ
$702M
| $485K | ﹤0.01% |
+8,558
| New | +$485K |
|
661
Ionis Pharmaceuticals
IONS
$10B
| $482K | ﹤0.01% |
+9,545
| New | +$482K |
|
662
Community Health Systems
CYH
$418M
| $481K | ﹤0.01% |
153,831
+150,854
| +5,067% | +$472K |
|
663
Navitas Semiconductor
NVTS
$1.3B
| $481K | ﹤0.01% |
59,627
-13,916
| -19% | -$112K |
|
664
Penske Automotive Group
PAG
$12.2B
| $481K | ﹤0.01% |
+3,001
| New | +$481K |
|
665
Iris Energy
IREN
$8.92B
| $476K | ﹤0.01% |
66,575
+13,015
| +24% | +$93.1K |
|
666
Invesco CurrencyShares Canadian Dollar Trust
FXC
$91.8M
| $474K | ﹤0.01% |
6,426
+1,452
| +29% | +$107K |
|
667
Sotera Health
SHC
$4.54B
| $474K | ﹤0.01% |
28,154
+12,024
| +75% | +$202K |
|
668
Virtu Financial
VIRT
$3.12B
| $470K | ﹤0.01% |
23,227
+15,031
| +183% | +$304K |
|
669
Zentalis Pharmaceuticals
ZNTL
$110M
| $470K | ﹤0.01% |
31,078
+28,865
| +1,304% | +$437K |
|
670
HUB Group
HUBG
$2.27B
| $469K | ﹤0.01% |
+10,208
| New | +$469K |
|
671
Ginkgo Bioworks
DNA
$625M
| $468K | ﹤0.01% |
6,923
+3,726
| +117% | +$252K |
|
672
Outfront Media
OUT
$3.11B
| $468K | ﹤0.01% |
+34,107
| New | +$468K |
|
673
Global E Online
GLBE
$6.21B
| $466K | ﹤0.01% |
11,761
-7,985
| -40% | -$316K |
|
674
Rocket Companies
RKT
$46.2B
| $466K | ﹤0.01% |
+32,200
| New | +$466K |
|
675
Cellebrite
CLBT
$4.29B
| $461K | ﹤0.01% |
53,239
+12,697
| +31% | +$110K |
|