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 | |
|---|---|---|---|---|---|---|
351
SPDR Euro Stoxx 50 ETF
FEZ
$4.52B
| $1.25M | ﹤0.01% |
+20,941
| New | +$1.25M |
|
352
Flywire
FLYW
$1.59B
| $1.25M | ﹤0.01% |
106,839
+99,513
| +1,358% | +$1.16M |
|
353
Permian Resources
PR
$9.75B
| $1.25M | ﹤0.01% |
91,499
-16,116
| -15% | -$219K |
|
354
Abercrombie & Fitch
ANF
$4.49B
| $1.23M | ﹤0.01% |
14,904
-2,919
| -16% | -$242K |
|
355
EOG Resources
EOG
$64.4B
| $1.22M | ﹤0.01% |
+10,192
| New | +$1.22M |
|
356
Global E Online
GLBE
$6.07B
| $1.22M | ﹤0.01% |
36,352
-3,242
| -8% | -$109K |
|
|
EUAD
357
Select STOXX Europe Aerospace & Defense ETF
EUAD
$1.06B
| $1.21M | ﹤0.01% |
+28,140
| New | +$1.21M |
|
358
Compass Minerals
CMP
$784M
| $1.21M | ﹤0.01% |
60,396
+37,736
| +167% | +$758K |
|
359
Nektar Therapeutics
NKTR
$764M
| $1.21M | ﹤0.01% |
46,953
+24,024
| +105% | +$621K |
|
360
Keros Therapeutics
KROS
$633M
| $1.21M | ﹤0.01% |
90,735
+20,223
| +29% | +$270K |
|
361
UBS Group
UBS
$128B
| $1.2M | ﹤0.01% |
35,546
+3,283
| +10% | +$111K |
|
362
Verisk Analytics
VRSK
$37.8B
| $1.2M | ﹤0.01% |
+3,842
| New | +$1.2M |
|
363
Sony
SONY
$165B
| $1.18M | ﹤0.01% |
+45,172
| New | +$1.18M |
|
364
Consumer Discretionary Select Sector SPDR Fund
XLY
$23.6B
| $1.18M | ﹤0.01% |
5,409
-14,321
| -73% | -$3.11M |
|
365
Evolv Technologies
EVLV
$1.39B
| $1.17M | ﹤0.01% |
187,134
+52,340
| +39% | +$326K |
|
366
Grupo Cibest S.A. American Depositary Shares (each representing four (4) Preferred Shares)
CIB
$12.5B
| $1.17M | ﹤0.01% |
25,249
+118
| +0.5% | +$5.45K |
|
367
Banco Santander
SAN
$141B
| $1.17M | ﹤0.01% |
140,540
+94,222
| +203% | +$782K |
|
368
D-Wave Quantum
QBTS
$5.26B
| $1.15M | ﹤0.01% |
+78,745
| New | +$1.15M |
|
369
Nova
NVMI
$7.58B
| $1.15M | ﹤0.01% |
4,169
-2,960
| -42% | -$814K |
|
370
SLM Corp
SLM
$6.49B
| $1.15M | ﹤0.01% |
+34,950
| New | +$1.15M |
|
371
LyondellBasell Industries
LYB
$17.7B
| $1.14M | ﹤0.01% |
19,645
-7,556
| -28% | -$437K |
|
372
BellRing Brands
BRBR
$4.97B
| $1.13M | ﹤0.01% |
19,432
+18,965
| +4,061% | +$1.1M |
|
373
PACCAR
PCAR
$52B
| $1.12M | ﹤0.01% |
+11,833
| New | +$1.12M |
|
374
Vail Resorts
MTN
$5.87B
| $1.12M | ﹤0.01% |
7,152
+6,436
| +899% | +$1.01M |
|
375
Copart
CPRT
$47B
| $1.12M | ﹤0.01% |
+22,746
| New | +$1.12M |
|