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 |
NVIDIA
NVDA
|
+$60M |
| 2 |
Microsoft
MSFT
|
+$58.6M |
| 3 |
iShares 20+ Year Treasury Bond ETF
TLT
|
+$52.5M |
| 4 |
PayPal
PYPL
|
+$40.9M |
| 5 |
Netflix
NFLX
|
+$29.7M |
Top Sells
| 1 |
Apple
AAPL
|
+$48.7M |
| 2 |
Walmart
WMT
|
+$45.2M |
| 3 |
Adobe
ADBE
|
+$40.6M |
| 4 |
VanEck Oil Services ETF
OIH
|
+$34.2M |
| 5 |
Enphase Energy
ENPH
|
+$27.2M |
Sector Composition
| 1 | Technology | 21.17% |
| 2 | Healthcare | 10.87% |
| 3 | Consumer Discretionary | 10.73% |
| 4 | Communication Services | 10.55% |
| 5 | Financials | 7.54% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
551
Insmed
INSM
$30.8B
| $512K | ﹤0.01% |
24,304
+23,004
| +1,770% | +$485K |
|
552
Acadia Realty Trust
AKR
$2.54B
| $507K | ﹤0.01% |
35,251
-8,713
| -20% | -$125K |
|
|
GOL
553
DELISTED
Gol Linhas Aéreas Inteligentes S.A. American Depositary Shares (Each representing Ten Preferred Shares)
GOL
| $507K | ﹤0.01% |
92,965
+22,314
| +32% | +$122K |
|
554
Innodata
INOD
$1.85B
| $506K | ﹤0.01% |
44,693
+8,015
| +22% | +$90.7K |
|
555
AirSculpt Technologies
AIRS
$380M
| $504K | ﹤0.01% |
58,561
+32,383
| +124% | +$279K |
|
556
Commault Systems
CVLT
$7.85B
| $500K | ﹤0.01% |
+6,887
| New | +$500K |
|
557
AeroVironment
AVAV
$12.3B
| $499K | ﹤0.01% |
4,887
+2,208
| +82% | +$225K |
|
558
BlackLine
BL
$3.32B
| $499K | ﹤0.01% |
+9,282
| New | +$499K |
|
|
SBOW
559
DELISTED
SilverBow Resources, Inc.
SBOW
| $499K | ﹤0.01% |
17,148
-30,205
| -64% | -$879K |
|
560
SPDR Euro Stoxx 50 ETF
FEZ
$4.54B
| $497K | ﹤0.01% |
10,815
-22,080
| -67% | -$1.01M |
|
561
Ovintiv
OVV
$11B
| $497K | ﹤0.01% |
13,081
-48,502
| -79% | -$1.84M |
|
562
Haleon
HLN
$44B
| $496K | ﹤0.01% |
59,275
-15,732
| -21% | -$132K |
|
|
CD
563
DELISTED
Chindata Group Holdings Limited American Depositary Shares
CD
| $496K | ﹤0.01% |
69,409
+61,533
| +781% | +$440K |
|
564
Schrodinger
SDGR
$1.34B
| $494K | ﹤0.01% |
+9,899
| New | +$494K |
|
565
Allegro MicroSystems
ALGM
$5.65B
| $493K | ﹤0.01% |
+10,933
| New | +$493K |
|
566
LivaNova
LIVN
$3.09B
| $492K | ﹤0.01% |
9,580
+8,089
| +543% | +$415K |
|
567
Concentrix
CNXC
$3.25B
| $489K | ﹤0.01% |
6,059
-12,638
| -68% | -$1.02M |
|
568
Microvision
MVIS
$334M
| $487K | ﹤0.01% |
+106,416
| New | +$487K |
|
569
AerSale
ASLE
$396M
| $486K | ﹤0.01% |
33,087
+32,027
| +3,021% | +$470K |
|
570
Ginkgo Bioworks
DNA
$608M
| $486K | ﹤0.01% |
6,535
+6,442
| +6,927% | +$479K |
|
571
Compañía de Minas Buenaventura
BVN
$5.08B
| $481K | ﹤0.01% |
65,555
+62,337
| +1,937% | +$457K |
|
572
Photronics
PLAB
$1.32B
| $481K | ﹤0.01% |
+18,664
| New | +$481K |
|
573
Noodles & Co
NDLS
$30.3M
| $479K | ﹤0.01% |
141,750
+37,489
| +36% | +$127K |
|
|
TEN
574
Tsakos Energy Navigation Ltd.
TEN
$648M
| $479K | ﹤0.01% |
26,924
+3,951
| +17% | +$70.3K |
|
575
Ascendis Pharma
ASND
$12B
| $478K | ﹤0.01% |
+5,364
| New | +$478K |
|