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 |
Amazon
AMZN
|
+$144M |
| 2 |
Invesco QQQ Trust
QQQ
|
+$68.7M |
| 3 |
AT&T
T
|
+$45.5M |
| 4 |
Meta Platforms (Facebook)
META
|
+$38M |
| 5 |
iShares MSCI Emerging Markets ETF
EEM
|
+$35.4M |
Top Sells
| 1 |
Microsoft
MSFT
|
+$94.2M |
| 2 |
Citigroup
C
|
+$62.3M |
| 3 |
JPMorgan Chase
JPM
|
+$56.2M |
| 4 |
Berkshire Hathaway Class B
BRK.B
|
+$45.8M |
| 5 |
SPDR Gold Trust
GLD
|
+$44.4M |
Sector Composition
| 1 | Consumer Discretionary | 16.85% |
| 2 | Technology | 15.5% |
| 3 | Communication Services | 10.53% |
| 4 | Healthcare | 8.8% |
| 5 | Consumer Staples | 5.63% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
1001
Liberty Broadband Class C
LBRDK
$8.63B
| $111K | ﹤0.01% |
1,462
+1,431
| +4,616% | +$109K |
|
1002
Microvast
MVST
$1.04B
| $111K | ﹤0.01% |
73,035
-65,201
| -47% | -$99.1K |
|
1003
Sensata Technologies
ST
$4.57B
| $110K | ﹤0.01% |
2,729
-4,080
| -60% | -$164K |
|
|
ACCD
1004
DELISTED
Accolade, Inc. Common Stock
ACCD
| $110K | ﹤0.01% |
+14,122
| New | +$110K |
|
1005
Murphy USA
MUSA
$7.47B
| $109K | ﹤0.01% |
391
-2,521
| -87% | -$703K |
|
1006
Direxion Daily S&P 500 Bear 1X Shares
SPDN
$127M
| $109K | ﹤0.01% |
+6,619
| New | +$109K |
|
|
AMED
1007
DELISTED
Amedisys
AMED
| $108K | ﹤0.01% |
+1,296
| New | +$108K |
|
1008
Planet Labs
PL
$2.94B
| $108K | ﹤0.01% |
+24,893
| New | +$108K |
|
1009
Wrap Technologies
WRAP
$105M
| $108K | ﹤0.01% |
63,969
+50,690
| +382% | +$85.6K |
|
|
CNR
1010
Core Natural Resources, Inc.
CNR
$3.75B
| $108K | ﹤0.01% |
+1,676
| New | +$108K |
|
1011
Arbutus Biopharma
ABUS
$888M
| $107K | ﹤0.01% |
46,010
+5,454
| +13% | +$12.7K |
|
1012
Amplify Cybersecurity ETF
HACK
$2.31B
| $106K | ﹤0.01% |
+2,414
| New | +$106K |
|
1013
Grand Canyon Education
LOPE
$5.88B
| $106K | ﹤0.01% |
+1,011
| New | +$106K |
|
1014
Autodesk
ADSK
$68B
| $106K | ﹤0.01% |
+568
| New | +$106K |
|
1015
Global X Autonomous & Electric Vehicles ETF
DRIV
$343M
| $106K | ﹤0.01% |
5,375
-973
| -15% | -$19.2K |
|
|
BORR
1016
Borr Drilling
BORR
$862M
| $105K | ﹤0.01% |
21,313
-11,463
| -35% | -$56.5K |
|
1017
iShares MSCI Italy ETF
EWI
$729M
| $105K | ﹤0.01% |
+3,919
| New | +$105K |
|
1018
National Beverage
FIZZ
$3.71B
| $105K | ﹤0.01% |
+2,269
| New | +$105K |
|
1019
Hallador Energy
HNRG
$750M
| $105K | ﹤0.01% |
10,602
+3,297
| +45% | +$32.7K |
|
|
HA
1020
DELISTED
Hawaiian Holdings, Inc.
HA
| $105K | ﹤0.01% |
+10,293
| New | +$105K |
|
1021
SI-BONE Inc
SIBN
$678M
| $105K | ﹤0.01% |
7,759
+7,606
| +4,971% | +$103K |
|
1022
Blend Labs
BLND
$1.12B
| $104K | ﹤0.01% |
72,834
+17,520
| +32% | +$25K |
|
|
WEBR
1023
DELISTED
Weber Inc.
WEBR
| $104K | ﹤0.01% |
12,969
-146,697
| -92% | -$1.18M |
|
|
ALEX
1024
Alexander & Baldwin
ALEX
$1.35B
| $103K | ﹤0.01% |
5,514
-3,100
| -36% | -$57.9K |
|
1025
Ardagh Metal Packaging
AMBP
$2.13B
| $103K | ﹤0.01% |
21,510
+15,649
| +267% | +$74.9K |
|