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 |
Apple
AAPL
|
$80M |
| 2 |
iShares 20+ Year Treasury Bond ETF
TLT
|
$45.3M |
| 3 |
Alphabet (Google) Class C
GOOG
|
$38.8M |
| 4 |
Amazon
AMZN
|
$38.6M |
| 5 |
Tesla
TSLA
|
$36M |
Top Sells
| 1 |
Alibaba
BABA
|
$46.4M |
| 2 |
Boeing
BA
|
$29.8M |
| 3 |
SPDR Gold Trust
GLD
|
$18.2M |
| 4 |
Biogen
BIIB
|
$15.8M |
| 5 |
NVIDIA
NVDA
|
$14.3M |
Sector Composition
| 1 | Technology | 22.73% |
| 2 | Consumer Discretionary | 17.54% |
| 3 | Communication Services | 10.03% |
| 4 | Healthcare | 9.29% |
| 5 | Industrials | 5.63% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
476
Autoliv
ALV
$9.58B
| $466K | ﹤0.01% |
+5,527
| New | +$466K |
|
477
JetBlue
JBLU
$1.85B
| $465K | ﹤0.01% |
24,884
+9,720
| +64% | +$182K |
|
478
Vanguard Growth ETF
VUG
$186B
| $465K | ﹤0.01% |
2,556
-1,352
| -35% | -$246K |
|
479
Direxion Daily S&P 500 Bear 3x Shares
SPXS
$443M
| $463K | ﹤0.01% |
3,502
-6,698
| -66% | -$886K |
|
480
Dynavax Technologies
DVAX
$1.18B
| $461K | ﹤0.01% |
80,704
+46,250
| +134% | +$264K |
|
481
CareDx
CDNA
$736M
| $459K | ﹤0.01% |
21,308
-4,222
| -17% | -$90.9K |
|
482
iShares S&P 100 ETF
OEF
$22.1B
| $459K | ﹤0.01% |
3,190
+2,920
| +1,081% | +$420K |
|
483
Sangamo Therapeutics
SGMO
$165M
| $458K | ﹤0.01% |
54,727
+3,438
| +7% | +$28.8K |
|
484
Sempra
SRE
$52.9B
| $456K | ﹤0.01% |
+6,028
| New | +$456K |
|
485
NIO
NIO
$13.4B
| $455K | ﹤0.01% |
+113,310
| New | +$455K |
|
486
EPAM Systems
EPAM
$9.44B
| $453K | ﹤0.01% |
2,137
+1,378
| +182% | +$292K |
|
487
Banco Bilbao Vizcaya Argentaria
BBVA
$105B
| $452K | ﹤0.01% |
81,164
+79,284
| +4,217% | +$442K |
|
488
PagSeguro Digital
PAGS
$2.8B
| $450K | ﹤0.01% |
13,202
+10,846
| +460% | +$370K |
|
|
MBT
489
DELISTED
Mobile TeleSystems Public Joint Stock Company American Depositary Shares (Each representing 2 Shares
MBT
| $450K | ﹤0.01% |
44,353
-32,469
| -42% | -$329K |
|
|
GRA
490
DELISTED
W.R. Grace & Co.
GRA
| $450K | ﹤0.01% |
6,455
+4,441
| +221% | +$310K |
|
491
PagerDuty
PD
$1.54B
| $448K | ﹤0.01% |
+19,191
| New | +$448K |
|
492
Gibraltar Industries
ROCK
$1.82B
| $445K | ﹤0.01% |
8,826
+6,716
| +318% | +$339K |
|
|
NVTA
493
DELISTED
Invitae Corporation
NVTA
| $444K | ﹤0.01% |
+27,575
| New | +$444K |
|
|
SIX
494
DELISTED
Six Flags Entertainment Corp.
SIX
| $443K | ﹤0.01% |
+9,826
| New | +$443K |
|
495
Regenxbio
RGNX
$490M
| $442K | ﹤0.01% |
10,791
+10,463
| +3,190% | +$429K |
|
496
Global X Silver Miners ETF NEW
SIL
$2.92B
| $442K | ﹤0.01% |
13,324
-18,537
| -58% | -$615K |
|
497
Armstrong World Industries
AWI
$8.58B
| $441K | ﹤0.01% |
+4,702
| New | +$441K |
|
498
Willis Towers Watson
WTW
$32.1B
| $441K | ﹤0.01% |
2,188
-1,161
| -35% | -$234K |
|
499
Campbell Soup
CPB
$10.1B
| $438K | ﹤0.01% |
+8,867
| New | +$438K |
|
500
Packaging Corp of America
PKG
$19.8B
| $434K | ﹤0.01% |
3,879
+1,957
| +102% | +$219K |
|