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 |
Amazon
AMZN
|
+$158M |
| 2 |
Invesco QQQ Trust
QQQ
|
+$69.1M |
| 3 |
Meta Platforms (Facebook)
META
|
+$57.4M |
| 4 |
Citigroup
C
|
+$23.4M |
| 5 |
Goldman Sachs
GS
|
+$23M |
Top Sells
| 1 |
Apple
AAPL
|
+$49.8M |
| 2 |
Berkshire Hathaway Class B
BRK.B
|
+$43.2M |
| 3 |
SPDR Dow Jones Industrial Average ETF Trust
DIA
|
+$42.2M |
| 4 |
Micron Technology
MU
|
+$26.1M |
| 5 |
Adobe
ADBE
|
+$21M |
Sector Composition
| 1 | Consumer Discretionary | 20.63% |
| 2 | Communication Services | 16.3% |
| 3 | Technology | 12.42% |
| 4 | Industrials | 9.24% |
| 5 | Healthcare | 8.11% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
776
Prestige Consumer Healthcare
PBH
$3.21B
| $198K | ﹤0.01% |
+5,240
| New | +$198K |
|
777
CryoPort
CYRX
$482M
| $197K | ﹤0.01% |
+15,425
| New | +$197K |
|
778
Invesco Golden Dragon China ETF
PGJ
$157M
| $197K | ﹤0.01% |
+5,132
| New | +$197K |
|
779
World Kinect Corp
WKC
$1.43B
| $196K | ﹤0.01% |
+7,093
| New | +$196K |
|
|
ZUO
780
DELISTED
Zuora, Inc.
ZUO
| $194K | ﹤0.01% |
8,396
-23,110
| -73% | -$534K |
|
781
Gates Industrial
GTES
$6.68B
| $193K | ﹤0.01% |
+9,948
| New | +$193K |
|
782
Republic Services
RSG
$72.2B
| $192K | ﹤0.01% |
2,653
-6,057
| -70% | -$438K |
|
783
BRF SA
BRFS
$6.07B
| $191K | ﹤0.01% |
34,973
-17,541
| -33% | -$95.8K |
|
784
VanEck JP Morgan EM Local Currency Bond ETF
EMLC
$3.72B
| $191K | ﹤0.01% |
+5,808
| New | +$191K |
|
785
iShares MSCI France ETF
EWQ
$391M
| $191K | ﹤0.01% |
+6,113
| New | +$191K |
|
786
Steris
STE
$24.8B
| $191K | ﹤0.01% |
+1,674
| New | +$191K |
|
|
INFI
787
DELISTED
Infinity Pharmaceuticals, Inc.
INFI
| $191K | ﹤0.01% |
70,516
+62,654
| +797% | +$170K |
|
788
3D Systems Corporation
DDD
$287M
| $190K | ﹤0.01% |
+10,061
| New | +$190K |
|
|
Y
789
DELISTED
Alleghany Corporation
Y
| $190K | ﹤0.01% |
+292
| New | +$190K |
|
790
Boston Properties
BXP
$12B
| $189K | ﹤0.01% |
+1,538
| New | +$189K |
|
791
The Greenbrier Companies
GBX
$1.45B
| $189K | ﹤0.01% |
3,156
-4,780
| -60% | -$286K |
|
792
Euronet Worldwide
EEFT
$3.58B
| $188K | ﹤0.01% |
+1,882
| New | +$188K |
|
793
Verastem
VSTM
$582M
| $188K | ﹤0.01% |
2,168
-5,907
| -73% | -$512K |
|
|
SGG
794
DELISTED
iPath Series B Bloomberg Sugar Subindex Total ReturnSM ETN
SGG
| $188K | ﹤0.01% |
+4,928
| New | +$188K |
|
|
VRS
795
DELISTED
Verso Corporation
VRS
| $186K | ﹤0.01% |
+5,538
| New | +$186K |
|
|
CRAY
796
DELISTED
Cray, Inc.
CRAY
| $186K | ﹤0.01% |
+8,668
| New | +$186K |
|
797
Heritage Commerce
HTBK
$629M
| $185K | ﹤0.01% |
12,461
+9,415
| +309% | +$140K |
|
|
ARNA
798
DELISTED
Arena Pharmaceuticals Inc
ARNA
| $184K | ﹤0.01% |
4,000
-5,074
| -56% | -$233K |
|
799
BOK Financial
BOKF
$7.06B
| $183K | ﹤0.01% |
1,882
+1,020
| +118% | +$99.2K |
|
800
Domo
DOMO
$684M
| $183K | ﹤0.01% |
+8,570
| New | +$183K |
|