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 | |
|---|---|---|---|---|---|---|
1001
Direxion Daily S&P 500 High Beta Bear 3X Shares
HIBS
$27.9M
| $174K | ﹤0.01% |
+6,421
| New | +$174K |
|
1002
RPC Inc
RES
$986M
| $174K | ﹤0.01% |
23,973
-8,111
| -25% | -$58.9K |
|
1003
SLM Corp
SLM
$5.86B
| $174K | ﹤0.01% |
+9,134
| New | +$174K |
|
1004
Great Lakes Dredge & Dock
GLDD
$821M
| $173K | ﹤0.01% |
22,533
-181
| -0.8% | -$1.39K |
|
1005
Direxion Daily Technology Bull 3x Shares
TECL
$3.79B
| $172K | ﹤0.01% |
2,579
-7,478
| -74% | -$499K |
|
1006
Inogen
INGN
$231M
| $171K | ﹤0.01% |
31,170
+29,031
| +1,357% | +$159K |
|
|
CBIO
1007
Crescent Biopharma, Inc. Common Stock
CBIO
$174M
| $170K | ﹤0.01% |
+724
| New | +$170K |
|
1008
Helix Energy Solutions
HLX
$914M
| $170K | ﹤0.01% |
+16,581
| New | +$170K |
|
1009
Energy Fuels
UUUU
$2.75B
| $170K | ﹤0.01% |
23,752
-69,391
| -74% | -$497K |
|
1010
Soleno Therapeutics
SLNO
$2.85B
| $168K | ﹤0.01% |
+4,192
| New | +$168K |
|
1011
Defiance Nasdaq 100 Enhanced Options Income ETF
QQQY
$189M
| $166K | ﹤0.01% |
+3,132
| New | +$166K |
|
1012
iShares S&P Mid-Cap 400 Growth ETF
IJK
$9.2B
| $165K | ﹤0.01% |
+2,085
| New | +$165K |
|
1013
Children's Place
PLCE
$155M
| $165K | ﹤0.01% |
7,132
-2,908
| -29% | -$67.3K |
|
1014
Petco
WOOF
$970M
| $165K | ﹤0.01% |
52,287
+12,659
| +32% | +$39.9K |
|
1015
MasterBrand
MBC
$1.71B
| $164K | ﹤0.01% |
+11,101
| New | +$164K |
|
|
OGI
1016
Organigram Holdings
OGI
$222M
| $164K | ﹤0.01% |
125,900
+117,473
| +1,394% | +$153K |
|
1017
Essential Utilities
WTRG
$10.7B
| $164K | ﹤0.01% |
4,410
-25,084
| -85% | -$933K |
|
|
AIRC
1018
DELISTED
Apartment Income REIT Corp.
AIRC
| $164K | ﹤0.01% |
4,735
+4,292
| +969% | +$149K |
|
1019
Driven Brands
DRVN
$3B
| $163K | ﹤0.01% |
11,475
+6,481
| +130% | +$92.1K |
|
1020
XPEL
XPEL
$960M
| $163K | ﹤0.01% |
+3,040
| New | +$163K |
|
1021
Diodes
DIOD
$2.44B
| $162K | ﹤0.01% |
+2,013
| New | +$162K |
|
1022
Equity Lifestyle Properties
ELS
$11.9B
| $161K | ﹤0.01% |
2,284
+2,083
| +1,036% | +$147K |
|
1023
Invesco
IVZ
$10B
| $161K | ﹤0.01% |
+9,040
| New | +$161K |
|
1024
Ouster
OUST
$1.67B
| $161K | ﹤0.01% |
21,105
+6,239
| +42% | +$47.6K |
|
|
SAGE
1025
DELISTED
Sage Therapeutics
SAGE
| $161K | ﹤0.01% |
+7,455
| New | +$161K |
|