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
|
+$29.3M |
| 2 |
Industrial Select Sector SPDR Fund
XLI
|
+$23.1M |
| 3 |
iShares Russell 2000 ETF
IWM
|
+$18M |
| 4 |
Netflix
NFLX
|
+$17.4M |
| 5 |
iShares 20+ Year Treasury Bond ETF
TLT
|
+$14M |
Top Sells
| 1 |
Invesco QQQ Trust
QQQ
|
+$120M |
| 2 |
SPDR S&P 500 ETF Trust
SPY
|
+$41.3M |
| 3 |
Walt Disney
DIS
|
+$26.9M |
| 4 |
Alphabet (Google) Class A
GOOGL
|
+$13.8M |
| 5 |
Johnson & Johnson
JNJ
|
+$11.3M |
Sector Composition
| 1 | Technology | 16.22% |
| 2 | Communication Services | 16.19% |
| 3 | Healthcare | 11.36% |
| 4 | Industrials | 9.74% |
| 5 | Consumer Discretionary | 8.61% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
|
LL
601
DELISTED
LL Flooring Holdings, Inc.
LL
| $256K | ﹤0.01% |
22,198
-28,458
| -56% | -$328K |
|
|
ARQL
602
DELISTED
Arqule Inc
ARQL
| $256K | ﹤0.01% |
23,338
+1,408
| +6% | +$15.4K |
|
603
Adverum Biotechnologies
ADVM
$65.9M
| $253K | ﹤0.01% |
2,130
+1,983
| +1,349% | +$236K |
|
|
MFA
604
MFA Financial
MFA
$1.05B
| $252K | ﹤0.01% |
8,799
+2,476
| +39% | +$70.9K |
|
605
Coeur Mining
CDE
$9.88B
| $250K | ﹤0.01% |
57,808
+17,706
| +44% | +$76.6K |
|
606
Fortune Brands Innovations
FBIN
$7.29B
| $250K | ﹤0.01% |
+5,122
| New | +$250K |
|
607
Alcon
ALC
$39.4B
| $249K | ﹤0.01% |
+4,022
| New | +$249K |
|
608
Scorpio Tankers
STNG
$2.97B
| $249K | ﹤0.01% |
+8,436
| New | +$249K |
|
|
CEO
609
DELISTED
CNOOC Limited
CEO
| $249K | ﹤0.01% |
+1,463
| New | +$249K |
|
610
Travel + Leisure Co
TNL
$4.11B
| $247K | ﹤0.01% |
5,636
+5,556
| +6,945% | +$243K |
|
|
SMC
611
Summit Midstream Corporation
SMC
$286M
| $246K | ﹤0.01% |
+2,213
| New | +$246K |
|
|
OILU
612
DELISTED
ProShares UltraPro 3x Crude Oil ETF
OILU
| $246K | ﹤0.01% |
11,221
+10,976
| +4,480% | +$241K |
|
|
STMP
613
DELISTED
Stamps.com, Inc.
STMP
| $245K | ﹤0.01% |
5,417
-22,516
| -81% | -$1.02M |
|
614
Henry Schein
HSIC
$8.43B
| $243K | ﹤0.01% |
3,481
+2,729
| +363% | +$191K |
|
615
Box
BOX
$4.78B
| $242K | ﹤0.01% |
13,747
-5,809
| -30% | -$102K |
|
616
Designer Brands
DBI
$224M
| $242K | ﹤0.01% |
12,651
-9,392
| -43% | -$180K |
|
|
AUY
617
DELISTED
Yamana Gold, Inc.
AUY
| $242K | ﹤0.01% |
96,195
-28,523
| -23% | -$71.8K |
|
618
Akebia Therapeutics
AKBA
$793M
| $241K | ﹤0.01% |
49,847
+13,357
| +37% | +$64.6K |
|
|
DQ
619
Daqo New Energy
DQ
$1.73B
| $241K | ﹤0.01% |
28,550
+15,420
| +117% | +$130K |
|
620
iShares MSCI Emerging Markets Min Vol Factor ETF
EEMV
$4.68B
| $240K | ﹤0.01% |
+4,092
| New | +$240K |
|
621
Black Stone Minerals
BSM
$2.67B
| $239K | ﹤0.01% |
15,437
+8,672
| +128% | +$134K |
|
|
CNR
622
DELISTED
Cornerstone Building Brands, Inc.
CNR
| $239K | ﹤0.01% |
41,066
+33,414
| +437% | +$194K |
|
|
GMLP
623
DELISTED
Golar LNG Partners LP
GMLP
| $237K | ﹤0.01% |
21,057
+6,423
| +44% | +$72.3K |
|
624
ICU Medical
ICUI
$3.33B
| $236K | ﹤0.01% |
937
-206
| -18% | -$51.9K |
|
625
Regions Financial
RF
$24.1B
| $235K | ﹤0.01% |
15,749
-28,753
| -65% | -$429K |
|