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 |
Energy Select Sector SPDR Fund
XLE
|
+$93.9M |
| 2 |
Pfizer
PFE
|
+$89.5M |
| 3 |
Boeing
BA
|
+$66.7M |
| 4 |
Intel
INTC
|
+$60.2M |
| 5 |
Meta Platforms (Facebook)
META
|
+$52.5M |
Top Sells
| 1 |
NVIDIA
NVDA
|
+$146M |
| 2 |
Alphabet (Google) Class A
GOOGL
|
+$109M |
| 3 |
Alibaba
BABA
|
+$81.8M |
| 4 |
Walt Disney
DIS
|
+$80.2M |
| 5 |
Citigroup
C
|
+$55.3M |
Sector Composition
| 1 | Technology | 19.03% |
| 2 | Healthcare | 13.86% |
| 3 | Consumer Discretionary | 12.44% |
| 4 | Industrials | 8.48% |
| 5 | Communication Services | 7.95% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
1001
B&G Foods
BGS
$370M
| $189K | ﹤0.01% |
16,544
-8,204
| -33% | -$93.7K |
|
1002
Louisiana-Pacific
LPX
$6.12B
| $189K | ﹤0.01% |
+2,262
| New | +$189K |
|
1003
Sotera Health
SHC
$4.48B
| $188K | ﹤0.01% |
15,670
-12,484
| -44% | -$150K |
|
1004
Transmedics
TMDX
$4.25B
| $188K | ﹤0.01% |
2,551
+2,284
| +855% | +$168K |
|
1005
The RealReal
REAL
$1.2B
| $188K | ﹤0.01% |
+48,123
| New | +$188K |
|
|
MAG
1006
DELISTED
MAG Silver
MAG
| $186K | ﹤0.01% |
+17,621
| New | +$186K |
|
1007
Ring Energy
REI
$207M
| $186K | ﹤0.01% |
+95,198
| New | +$186K |
|
1008
Host Hotels & Resorts
HST
$12.1B
| $185K | ﹤0.01% |
8,985
-2,126
| -19% | -$43.8K |
|
1009
BGC Group
BGC
$4.62B
| $185K | ﹤0.01% |
23,929
-4,179
| -15% | -$32.3K |
|
1010
Gildan
GIL
$8.3B
| $185K | ﹤0.01% |
4,997
+1,186
| +31% | +$43.9K |
|
1011
Daktronics
DAKT
$1.09B
| $184K | ﹤0.01% |
+18,546
| New | +$184K |
|
1012
Arcus Biosciences
RCUS
$1.3B
| $183K | ﹤0.01% |
9,723
-77,361
| -89% | -$1.46M |
|
1013
CenterPoint Energy
CNP
$24.8B
| $182K | ﹤0.01% |
6,407
-7,553
| -54% | -$215K |
|
1014
Rayonier Advanced Materials
RYAM
$484M
| $182K | ﹤0.01% |
38,171
-41,991
| -52% | -$200K |
|
1015
Descartes Systems
DSGX
$8.78B
| $181K | ﹤0.01% |
1,985
+1,887
| +1,926% | +$172K |
|
1016
Installed Building Products
IBP
$6.97B
| $181K | ﹤0.01% |
701
+513
| +273% | +$132K |
|
1017
NCR Atleos
NATL
$2.86B
| $181K | ﹤0.01% |
9,176
-16,232
| -64% | -$320K |
|
|
CDMO
1018
DELISTED
Avid Bioservices, Inc. Common Stock
CDMO
| $181K | ﹤0.01% |
+27,163
| New | +$181K |
|
1019
CMS Energy
CMS
$20.9B
| $180K | ﹤0.01% |
2,984
-2,202
| -42% | -$133K |
|
|
HAYN
1020
DELISTED
Haynes International, Inc.
HAYN
| $180K | ﹤0.01% |
+3,002
| New | +$180K |
|
1021
BlackBerry
BB
$2.51B
| $179K | ﹤0.01% |
+65,006
| New | +$179K |
|
1022
Ecolab
ECL
$75B
| $179K | ﹤0.01% |
+779
| New | +$179K |
|
|
CSW
1023
CSW Industrials
CSW
$4.23B
| $178K | ﹤0.01% |
762
+312
| +69% | +$72.9K |
|
1024
Marqeta
MQ
$2.58B
| $178K | ﹤0.01% |
29,952
-22,376
| -43% | -$133K |
|
1025
Prothena Corp
PRTA
$441M
| $178K | ﹤0.01% |
+7,218
| New | +$178K |
|