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 | |
|---|---|---|---|---|---|---|
501
Fulcrum Therapeutics
FULC
$396M
| $752K | ﹤0.01% |
109,365
+106,339
| +3,514% | +$731K |
|
502
Cummins
CMI
$54.5B
| $749K | ﹤0.01% |
2,288
-1,195
| -34% | -$391K |
|
503
Rexford Industrial Realty
REXR
$10.1B
| $745K | ﹤0.01% |
+20,971
| New | +$745K |
|
504
EPAM Systems
EPAM
$9.04B
| $744K | ﹤0.01% |
4,210
-678
| -14% | -$120K |
|
505
Edwards Lifesciences
EW
$46.9B
| $743K | ﹤0.01% |
+9,510
| New | +$743K |
|
506
Ondas Holdings
ONDS
$1.66B
| $738K | ﹤0.01% |
384,769
+339,082
| +742% | +$650K |
|
507
SentinelOne
S
$6.17B
| $733K | ﹤0.01% |
+40,109
| New | +$733K |
|
508
Viavi Solutions
VIAV
$2.58B
| $729K | ﹤0.01% |
72,469
+60,194
| +490% | +$606K |
|
509
Hudson Technologies
HDSN
$447M
| $726K | ﹤0.01% |
+89,430
| New | +$726K |
|
|
FFAI
510
Faraday Future Intelligent Electric Inc. Common Stock
FFAI
$257M
| $722K | ﹤0.01% |
429,833
+291,000
| +210% | +$489K |
|
511
Intellia Therapeutics
NTLA
$1.28B
| $720K | ﹤0.01% |
76,777
-64,490
| -46% | -$605K |
|
512
Cognizant
CTSH
$34.7B
| $719K | ﹤0.01% |
+9,225
| New | +$719K |
|
513
Patterson-UTI
PTEN
$2.15B
| $717K | ﹤0.01% |
121,058
-70,329
| -37% | -$417K |
|
514
Full Truck Alliance
YMM
$13.9B
| $717K | ﹤0.01% |
60,787
-31,042
| -34% | -$366K |
|
515
Adient
ADNT
$2B
| $716K | ﹤0.01% |
+36,830
| New | +$716K |
|
516
PAR Technology
PAR
$1.93B
| $716K | ﹤0.01% |
10,329
+934
| +10% | +$64.7K |
|
517
Evercore
EVR
$12.5B
| $713K | ﹤0.01% |
2,641
+2,222
| +530% | +$600K |
|
518
Garmin
GRMN
$46.1B
| $713K | ﹤0.01% |
3,417
+2,913
| +578% | +$608K |
|
519
Viasat
VSAT
$4.09B
| $704K | ﹤0.01% |
48,238
-32,633
| -40% | -$476K |
|
520
Ceragon Networks
CRNT
$179M
| $703K | ﹤0.01% |
285,892
+252,340
| +752% | +$620K |
|
521
Akebia Therapeutics
AKBA
$827M
| $702K | ﹤0.01% |
193,034
+54,564
| +39% | +$198K |
|
522
Loar Holdings
LOAR
$7.31B
| $700K | ﹤0.01% |
+8,133
| New | +$700K |
|
523
Cal-Maine
CALM
$5.43B
| $699K | ﹤0.01% |
7,022
-4,147
| -37% | -$413K |
|
524
Biohaven
BHVN
$1.56B
| $698K | ﹤0.01% |
49,482
+21,754
| +78% | +$307K |
|
525
ProShares Short VIX Short-Term Futures ETF
SVXY
$252M
| $696K | ﹤0.01% |
+16,357
| New | +$696K |
|