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
|
+$102M |
| 2 |
TSMC
TSM
|
+$29.6M |
| 3 |
JPMorgan Chase
JPM
|
+$21.9M |
| 4 |
Boeing
BA
|
+$18.8M |
| 5 |
Target
TGT
|
+$13.5M |
Top Sells
| 1 |
SPDR Gold Trust
GLD
|
+$94.2M |
| 2 |
Tesla
TSLA
|
+$91.2M |
| 3 |
Invesco QQQ Trust
QQQ
|
+$81.5M |
| 4 |
NVIDIA
NVDA
|
+$60M |
| 5 |
iShares MSCI EAFE ETF
EFA
|
+$40.5M |
Sector Composition
| 1 | Consumer Discretionary | 21.73% |
| 2 | Technology | 16.48% |
| 3 | Healthcare | 9.06% |
| 4 | Financials | 8.3% |
| 5 | Communication Services | 7.51% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
626
Sociedad Química y Minera de Chile
SQM
$12B
| $366K | ﹤0.01% |
11,294
-32,685
| -74% | -$1.06M |
|
|
HPP
627
Hudson Pacific Properties
HPP
$1.1B
| $361K | ﹤0.01% |
16,495
+15,715
| +2,015% | +$344K |
|
628
VirnetX
VHC
$74.6M
| $359K | ﹤0.01% |
3,409
+3,399
| +33,990% | +$358K |
|
|
ATH
629
DELISTED
Athene Holding Ltd. Class A Common Shares
ATH
| $359K | ﹤0.01% |
10,541
-18,089
| -63% | -$616K |
|
630
Interactive Brokers
IBKR
$27.8B
| $358K | ﹤0.01% |
29,700
-3,028
| -9% | -$36.5K |
|
|
INFN
631
DELISTED
Infinera Corporation Common Stock
INFN
| $358K | ﹤0.01% |
+58,263
| New | +$358K |
|
632
Cigna
CI
$80.7B
| $357K | ﹤0.01% |
+2,109
| New | +$357K |
|
|
UFS
633
DELISTED
DOMTAR CORPORATION (New)
UFS
| $357K | ﹤0.01% |
+13,622
| New | +$357K |
|
634
eXp World Holdings
EXPI
$1.76B
| $356K | ﹤0.01% |
+17,662
| New | +$356K |
|
635
Vertiv
VRT
$52.2B
| $356K | ﹤0.01% |
+20,609
| New | +$356K |
|
636
Yeti Holdings
YETI
$2.88B
| $356K | ﹤0.01% |
+7,877
| New | +$356K |
|
637
Prospect Capital
PSEC
$1.29B
| $355K | ﹤0.01% |
70,646
+54,784
| +345% | +$275K |
|
638
Tradeweb Markets
TW
$25.3B
| $355K | ﹤0.01% |
6,130
-13,820
| -69% | -$800K |
|
639
Edgewell Personal Care
EPC
$1.01B
| $354K | ﹤0.01% |
12,711
-8,467
| -40% | -$236K |
|
640
GameStop
GME
$10.9B
| $354K | ﹤0.01% |
138,888
-184,728
| -57% | -$471K |
|
641
iShares US Transportation ETF
IYT
$604M
| $353K | ﹤0.01% |
7,108
-14,256
| -67% | -$708K |
|
642
Box
BOX
$4.74B
| $352K | ﹤0.01% |
20,296
-29,945
| -60% | -$519K |
|
643
Equity Lifestyle Properties
ELS
$11.7B
| $352K | ﹤0.01% |
+5,752
| New | +$352K |
|
644
IPG Photonics
IPGP
$3.44B
| $351K | ﹤0.01% |
2,066
+55
| +3% | +$9.34K |
|
645
Nucor
NUE
$32.6B
| $351K | ﹤0.01% |
+7,839
| New | +$351K |
|
646
Casey's General Stores
CASY
$20B
| $348K | ﹤0.01% |
1,963
-1,848
| -48% | -$328K |
|
647
Bank of Montreal
BMO
$90.5B
| $347K | ﹤0.01% |
+5,948
| New | +$347K |
|
|
ICAD
648
DELISTED
iCAD Inc
ICAD
| $347K | ﹤0.01% |
+39,408
| New | +$347K |
|
649
Sunoco
SUN
$6.9B
| $347K | ﹤0.01% |
14,250
+8,768
| +160% | +$214K |
|
|
NVTA
650
DELISTED
Invitae Corporation
NVTA
| $347K | ﹤0.01% |
8,010
+7,510
| +1,502% | +$325K |
|