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 |
Apple
AAPL
|
+$586M |
| 2 |
Strategy Inc Common Stock Class A
MSTR
|
+$82.5M |
| 3 |
Intel
INTC
|
+$40.4M |
| 4 |
Invesco QQQ Trust
QQQ
|
+$39.4M |
| 5 |
Uber
UBER
|
+$36.3M |
Top Sells
| 1 |
NVIDIA
NVDA
|
+$130M |
| 2 |
Pinduoduo
PDD
|
+$95.7M |
| 3 |
Boeing
BA
|
+$56.2M |
| 4 |
KraneShares CSI China Internet ETF
KWEB
|
+$40.7M |
| 5 |
Microsoft
MSFT
|
+$40.5M |
Sector Composition
| 1 | Technology | 34.29% |
| 2 | Consumer Discretionary | 11.38% |
| 3 | Healthcare | 9.65% |
| 4 | Financials | 6.33% |
| 5 | Communication Services | 5.52% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
1126
Tenable Holdings
TENB
$3.63B
| $117K | ﹤0.01% |
2,996
+2,449
| +448% | +$95.6K |
|
|
RVNC
1127
DELISTED
Revance Therapeutics, Inc.
RVNC
| $117K | ﹤0.01% |
38,598
+14,220
| +58% | +$43.1K |
|
1128
Keros Therapeutics
KROS
$636M
| $116K | ﹤0.01% |
+7,387
| New | +$116K |
|
1129
Appian
APPN
$2.31B
| $115K | ﹤0.01% |
3,517
+2,322
| +194% | +$75.9K |
|
1130
Charter Communications
CHTR
$36.1B
| $115K | ﹤0.01% |
338
-5,432
| -94% | -$1.85M |
|
1131
Immunic
IMUX
$84M
| $115K | ﹤0.01% |
115,962
+79,455
| +218% | +$78.8K |
|
1132
Soho House & Co
SHCO
$1.73B
| $115K | ﹤0.01% |
15,452
-2,403
| -13% | -$17.9K |
|
1133
Delcath Systems
DCTH
$395M
| $114K | ﹤0.01% |
9,501
+6,235
| +191% | +$74.8K |
|
1134
Middleby
MIDD
$7.1B
| $113K | ﹤0.01% |
+836
| New | +$113K |
|
1135
Grid Dynamics Holdings
GDYN
$641M
| $112K | ﹤0.01% |
5,039
+4,724
| +1,500% | +$105K |
|
|
ME
1136
DELISTED
23andMe Holding Co. Class A Common Stock
ME
| $112K | ﹤0.01% |
34,499
+32,426
| +1,564% | +$105K |
|
1137
Lightbridge
LTBR
$366M
| $111K | ﹤0.01% |
23,468
+19,483
| +489% | +$92.2K |
|
|
BZUN
1138
Baozun
BZUN
$254M
| $110K | ﹤0.01% |
+40,532
| New | +$110K |
|
1139
Cedar Fair
FUN
$2.21B
| $110K | ﹤0.01% |
2,294
-1,248
| -35% | -$59.8K |
|
1140
Myomo
MYO
$34.9M
| $110K | ﹤0.01% |
17,098
+11,657
| +214% | +$75K |
|
1141
Visteon
VC
$3.49B
| $110K | ﹤0.01% |
+1,243
| New | +$110K |
|
1142
XP
XP
$10B
| $110K | ﹤0.01% |
+9,312
| New | +$110K |
|
1143
Banco Santander
SAN
$149B
| $109K | ﹤0.01% |
23,986
+10,976
| +84% | +$49.9K |
|
|
CNH
1144
CNH Industrial
CNH
$14.2B
| $108K | ﹤0.01% |
9,556
-17,490
| -65% | -$198K |
|
|
SEI
1145
Solaris Energy Infrastructure, Inc.
SEI
$1.31B
| $107K | ﹤0.01% |
3,725
+2,689
| +260% | +$77.2K |
|
1146
Gladstone Capital
GLAD
$527M
| $106K | ﹤0.01% |
+3,756
| New | +$106K |
|
1147
NovoCure
NVCR
$1.4B
| $106K | ﹤0.01% |
+3,587
| New | +$106K |
|
1148
TriplePoint Venture Growth BDC
TPVG
$271M
| $105K | ﹤0.01% |
14,346
-5,504
| -28% | -$40.3K |
|
1149
GraniteShares 2x Long AMD Daily ETF
AMDL
$469M
| $105K | ﹤0.01% |
13,749
+12,765
| +1,297% | +$97.5K |
|
1150
Health Catalyst
HCAT
$232M
| $104K | ﹤0.01% |
14,767
-6,170
| -29% | -$43.5K |
|