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 |
Alibaba
BABA
|
+$48.9M |
| 2 |
Boeing
BA
|
+$25.8M |
| 3 |
SPDR Gold Trust
GLD
|
+$18.2M |
| 4 |
Biogen
BIIB
|
+$15.8M |
| 5 |
FedEx
FDX
|
+$13.6M |
Top Sells
| 1 |
Alphabet (Google) Class C
GOOG
|
+$62.1M |
| 2 |
iShares Russell 2000 ETF
IWM
|
+$36.4M |
| 3 |
Industrial Select Sector SPDR Fund
XLI
|
+$17.5M |
| 4 |
Netflix
NFLX
|
+$16.3M |
| 5 |
iShares 20+ Year Treasury Bond ETF
TLT
|
+$14.6M |
Sector Composition
| 1 | Consumer Discretionary | 16.74% |
| 2 | Technology | 16.32% |
| 3 | Healthcare | 12.17% |
| 4 | Industrials | 12.14% |
| 5 | Communication Services | 7.05% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
626
ZTO Express
ZTO
$15.4B
| $209K | ﹤0.01% |
+9,831
| New | +$209K |
|
627
Under Armour Class C
UA
$2.09B
| $208K | ﹤0.01% |
11,488
+6,861
| +148% | +$124K |
|
628
uniQure
QURE
$959M
| $207K | ﹤0.01% |
5,278
-15,166
| -74% | -$595K |
|
629
Nice
NICE
$8.77B
| $206K | ﹤0.01% |
1,435
+989
| +222% | +$142K |
|
|
CCXI
630
DELISTED
ChemoCentryx, Inc.
CCXI
| $206K | ﹤0.01% |
30,394
-18,016
| -37% | -$122K |
|
|
PE
631
DELISTED
PARSLEY ENERGY INC
PE
| $205K | ﹤0.01% |
12,206
+3,733
| +44% | +$62.7K |
|
632
Red Robin
RRGB
$111M
| $204K | ﹤0.01% |
+6,135
| New | +$204K |
|
|
MDRX
633
DELISTED
Veradigm Inc. Common Stock
MDRX
| $204K | ﹤0.01% |
18,655
+7,381
| +65% | +$80.7K |
|
634
Lowe's Companies
LOW
$149B
| $203K | ﹤0.01% |
+1,850
| New | +$203K |
|
635
Packaging Corp of America
PKG
$19.2B
| $203K | ﹤0.01% |
+1,922
| New | +$203K |
|
636
Simply Good Foods
SMPL
$2.73B
| $203K | ﹤0.01% |
+7,021
| New | +$203K |
|
637
Kellanova
K
$27.5B
| $202K | ﹤0.01% |
3,352
-31,208
| -90% | -$1.88M |
|
638
Atlassian
TEAM
$45.7B
| $202K | ﹤0.01% |
1,616
-10,008
| -86% | -$1.25M |
|
639
NMI Holdings
NMIH
$3.07B
| $201K | ﹤0.01% |
7,671
+7,069
| +1,174% | +$185K |
|
|
JJG
640
DELISTED
iPath Series B Bloomberg Grains Subindex Total ReturnSM ETN
JJG
| $201K | ﹤0.01% |
4,520
+405
| +10% | +$18K |
|
641
Charles River Laboratories
CRL
$7.54B
| $200K | ﹤0.01% |
+1,511
| New | +$200K |
|
642
West Pharmaceutical
WST
$18.4B
| $200K | ﹤0.01% |
1,416
-887
| -39% | -$125K |
|
643
RLJ Lodging Trust
RLJ
$1.14B
| $198K | ﹤0.01% |
11,667
+11,665
| +583,250% | +$198K |
|
|
IPHI
644
DELISTED
INPHI CORPORATION
IPHI
| $198K | ﹤0.01% |
3,248
+2,850
| +716% | +$174K |
|
645
Transocean
RIG
$3.06B
| $197K | ﹤0.01% |
44,072
+452
| +1% | +$2.02K |
|
|
IVC
646
DELISTED
Invacare Corporation
IVC
| $197K | ﹤0.01% |
+26,274
| New | +$197K |
|
647
CoreCivic
CXW
$2.18B
| $196K | ﹤0.01% |
+11,374
| New | +$196K |
|
648
Dave & Buster's
PLAY
$769M
| $195K | ﹤0.01% |
5,026
+1,354
| +37% | +$52.5K |
|
649
Spok Holdings
SPOK
$356M
| $193K | ﹤0.01% |
16,187
+3,580
| +28% | +$42.7K |
|
650
Anavex Life Sciences
AVXL
$762M
| $191K | ﹤0.01% |
60,604
+39,232
| +184% | +$124K |
|