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
|
$216M |
| 2 |
Apple
AAPL
|
$159M |
| 3 |
Broadcom
AVGO
|
$128M |
| 4 |
Booking.com
BKNG
|
$62.2M |
| 5 |
SPDR S&P 500 ETF Trust
SPY
|
$61.9M |
Top Sells
| 1 |
iShares 20+ Year Treasury Bond ETF
TLT
|
$141M |
| 2 |
Amazon
AMZN
|
$53.1M |
| 3 |
TSMC
TSM
|
$45.7M |
| 4 |
Netflix
NFLX
|
$45.3M |
| 5 |
Pfizer
PFE
|
$38.3M |
Sector Composition
| 1 | Technology | 34.74% |
| 2 | Communication Services | 9% |
| 3 | Consumer Discretionary | 8.67% |
| 4 | Healthcare | 8.07% |
| 5 | Financials | 6.4% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
251
NexGen Energy
NXE
$4.46B
| $1.94M | ﹤0.01% |
280,171
-29,787
| -10% | -$207K |
|
252
Edison International
EIX
$21B
| $1.93M | ﹤0.01% |
37,487
-139,393
| -79% | -$7.19M |
|
|
SNDK
253
Sandisk Corporation Common Stock
SNDK
$9.99B
| $1.92M | ﹤0.01% |
42,337
+21,184
| +100% | +$960K |
|
254
Hecla Mining
HL
$6.04B
| $1.92M | ﹤0.01% |
319,855
+81,994
| +34% | +$491K |
|
255
Akamai
AKAM
$11.3B
| $1.91M | ﹤0.01% |
+23,968
| New | +$1.91M |
|
|
PONY
256
Pony AI Inc. American Depositary Shares
PONY
$4.87B
| $1.9M | ﹤0.01% |
+144,207
| New | +$1.9M |
|
257
Golar LNG
GLNG
$4.52B
| $1.9M | ﹤0.01% |
46,102
+1,780
| +4% | +$73.3K |
|
|
ARI
258
Apollo Commercial Real Estate
ARI
$1.53B
| $1.9M | ﹤0.01% |
195,979
-1,018
| -0.5% | -$9.85K |
|
259
Enovix
ENVX
$1.81B
| $1.9M | ﹤0.01% |
209,678
-343,748
| -62% | -$3.11M |
|
260
NCR Voyix
VYX
$1.84B
| $1.89M | ﹤0.01% |
161,388
+117,634
| +269% | +$1.38M |
|
261
Conagra Brands
CAG
$9.23B
| $1.88M | ﹤0.01% |
91,812
+51,578
| +128% | +$1.06M |
|
262
Darling Ingredients
DAR
$5.07B
| $1.88M | ﹤0.01% |
49,433
+2,163
| +5% | +$82K |
|
263
DoorDash
DASH
$105B
| $1.87M | ﹤0.01% |
7,577
-58,394
| -89% | -$14.4M |
|
|
EH
264
EHang Holdings
EH
$1.16B
| $1.85M | ﹤0.01% |
106,291
-13,908
| -12% | -$241K |
|
265
Noble Corp
NE
$4.54B
| $1.84M | ﹤0.01% |
69,143
-3,418
| -5% | -$90.7K |
|
266
Blackstone Mortgage Trust
BXMT
$3.45B
| $1.81M | ﹤0.01% |
94,078
+3,940
| +4% | +$75.8K |
|
267
Targa Resources
TRGP
$34.9B
| $1.81M | ﹤0.01% |
+10,377
| New | +$1.81M |
|
268
Magna International
MGA
$12.9B
| $1.8M | ﹤0.01% |
46,586
-8,032
| -15% | -$310K |
|
269
Kodak
KODK
$477M
| $1.8M | ﹤0.01% |
317,851
+87,703
| +38% | +$495K |
|
270
iShares US Aerospace & Defense ETF
ITA
$9.3B
| $1.79M | ﹤0.01% |
9,514
-389
| -4% | -$73.4K |
|
271
Direxion Daily S&P 500 Bull 3x Shares
SPXL
$5.49B
| $1.78M | ﹤0.01% |
+10,277
| New | +$1.78M |
|
272
ASP Isotopes
ASPI
$755M
| $1.77M | ﹤0.01% |
240,150
+237,572
| +9,215% | +$1.75M |
|
273
Bath & Body Works
BBWI
$6.06B
| $1.76M | ﹤0.01% |
58,755
+18,731
| +47% | +$561K |
|
274
HubSpot
HUBS
$25.7B
| $1.74M | ﹤0.01% |
3,128
+2,364
| +309% | +$1.32M |
|
275
Merck
MRK
$212B
| $1.74M | ﹤0.01% |
+21,992
| New | +$1.74M |
|