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 | |
|---|---|---|---|---|---|---|
801
Digimarc
DMRC
$186M
| $307K | ﹤0.01% |
8,222
-5,635
| -41% | -$210K |
|
802
GraniteShares ETF Trust GraniteShares 2x Long META Daily ETF
FBL
$156M
| $307K | ﹤0.01% |
9,325
+8,418
| +928% | +$277K |
|
803
International Seaways
INSW
$2.35B
| $307K | ﹤0.01% |
+8,565
| New | +$307K |
|
804
THOR Low Volatility ETF
THLV
$46.6M
| $307K | ﹤0.01% |
+11,168
| New | +$307K |
|
805
Arrowhead Research
ARWR
$3.76B
| $306K | ﹤0.01% |
16,307
+2,833
| +21% | +$53.2K |
|
806
WPP
WPP
$5.89B
| $305K | ﹤0.01% |
+5,937
| New | +$305K |
|
|
SWTX
807
DELISTED
SpringWorks Therapeutics
SWTX
| $304K | ﹤0.01% |
8,415
-14,659
| -64% | -$530K |
|
808
Wendy's
WEN
$1.89B
| $304K | ﹤0.01% |
18,667
+1,630
| +10% | +$26.5K |
|
809
Butterfly Network
BFLY
$400M
| $303K | ﹤0.01% |
+97,118
| New | +$303K |
|
810
IAC Inc
IAC
$2.92B
| $303K | ﹤0.01% |
+8,567
| New | +$303K |
|
811
Ryman Hospitality Properties
RHP
$6.23B
| $302K | ﹤0.01% |
2,902
-366
| -11% | -$38.1K |
|
812
NET Power
NPWR
$164M
| $300K | ﹤0.01% |
+28,387
| New | +$300K |
|
813
KalVista Pharmaceuticals
KALV
$786M
| $297K | ﹤0.01% |
35,125
+33,041
| +1,585% | +$279K |
|
814
Bit Digital
BTBT
$890M
| $296K | ﹤0.01% |
+101,086
| New | +$296K |
|
815
Cracker Barrel
CBRL
$1.13B
| $295K | ﹤0.01% |
+5,594
| New | +$295K |
|
816
POET Technologies
POET
$484M
| $295K | ﹤0.01% |
49,715
+19,387
| +64% | +$115K |
|
817
IDT Corp
IDT
$1.65B
| $294K | ﹤0.01% |
+6,192
| New | +$294K |
|
818
Barnes & Noble Education
BNED
$294M
| $292K | ﹤0.01% |
+29,104
| New | +$292K |
|
|
LAC
819
Lithium Americas
LAC
$686M
| $291K | ﹤0.01% |
98,291
-192,083
| -66% | -$569K |
|
820
ProShares Ultra Russell2000
UWM
$381M
| $290K | ﹤0.01% |
6,948
-1,727
| -20% | -$72.1K |
|
|
DDL
821
Dingdong
DDL
$479M
| $289K | ﹤0.01% |
88,201
+86,156
| +4,213% | +$282K |
|
822
Domo
DOMO
$621M
| $289K | ﹤0.01% |
40,822
+4,285
| +12% | +$30.3K |
|
823
Clearwater Analytics
CWAN
$5.93B
| $288K | ﹤0.01% |
+10,482
| New | +$288K |
|
824
Real Estate Select Sector SPDR Fund
XLRE
$7.72B
| $288K | ﹤0.01% |
7,090
-78,006
| -92% | -$3.17M |
|
825
Ezcorp Inc
EZPW
$1.04B
| $287K | ﹤0.01% |
23,488
+18,039
| +331% | +$220K |
|