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 | |
|---|---|---|---|---|---|---|
801
Granite Construction
GVA
$4.8B
| $315K | ﹤0.01% |
+6,201
| New | +$315K |
|
802
IAC Inc
IAC
$2.88B
| $314K | ﹤0.01% |
+7,319
| New | +$314K |
|
803
Appian
APPN
$2.3B
| $313K | ﹤0.01% |
8,325
+6,233
| +298% | +$234K |
|
804
National Vision
EYE
$1.79B
| $313K | ﹤0.01% |
14,958
+14,675
| +5,186% | +$307K |
|
805
Barclays
BCS
$72.8B
| $312K | ﹤0.01% |
+39,619
| New | +$312K |
|
806
Globalstar
GSAT
$3.84B
| $312K | ﹤0.01% |
10,743
-3,351
| -24% | -$97.3K |
|
807
Kodak
KODK
$485M
| $312K | ﹤0.01% |
+80,227
| New | +$312K |
|
808
NextNav
NN
$2.2B
| $312K | ﹤0.01% |
70,316
+59,032
| +523% | +$262K |
|
809
Extreme Networks
EXTR
$3.02B
| $309K | ﹤0.01% |
+17,548
| New | +$309K |
|
810
Icon
ICLR
$13.6B
| $309K | ﹤0.01% |
1,092
+493
| +82% | +$140K |
|
|
TGH
811
DELISTED
Textainer Group Holdings limited
TGH
| $309K | ﹤0.01% |
+6,283
| New | +$309K |
|
812
Maravai LifeSciences
MRVI
$404M
| $305K | ﹤0.01% |
46,615
+34,845
| +296% | +$228K |
|
813
Arcellx
ACLX
$4.31B
| $304K | ﹤0.01% |
5,481
+5,472
| +60,800% | +$304K |
|
814
Navios Maritime Partners
NMM
$1.4B
| $304K | ﹤0.01% |
+10,880
| New | +$304K |
|
815
CMS Energy
CMS
$21.3B
| $301K | ﹤0.01% |
+5,186
| New | +$301K |
|
816
Pilgrim's Pride
PPC
$10.3B
| $300K | ﹤0.01% |
10,881
+8,546
| +366% | +$236K |
|
817
Travelers Companies
TRV
$61.3B
| $300K | ﹤0.01% |
+1,579
| New | +$300K |
|
818
Burlington
BURL
$17.6B
| $299K | ﹤0.01% |
+1,541
| New | +$299K |
|
819
Frontier Group Holdings
ULCC
$1.23B
| $299K | ﹤0.01% |
54,851
-12,262
| -18% | -$66.8K |
|
820
Merchants Bancorp
MBIN
$1.45B
| $298K | ﹤0.01% |
7,015
+6,871
| +4,772% | +$292K |
|
821
Eversource Energy
ES
$23.8B
| $297K | ﹤0.01% |
4,828
-19,317
| -80% | -$1.19M |
|
822
Valkyrie ETF Trust II CoinShares Bitcoin Mining ETF
WGMI
$200M
| $297K | ﹤0.01% |
16,514
+16,176
| +4,786% | +$291K |
|
823
CVRx
CVRX
$205M
| $296K | ﹤0.01% |
+9,435
| New | +$296K |
|
824
Tempest Therapeutics
TPST
$46.6M
| $296K | ﹤0.01% |
+5,187
| New | +$296K |
|
825
Alcon
ALC
$39.4B
| $294K | ﹤0.01% |
+3,774
| New | +$294K |
|