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 | |
|---|---|---|---|---|---|---|
726
Viavi Solutions
VIAV
$2.66B
| $168K | ﹤0.01% |
+12,704
| New | +$168K |
|
|
JKS
727
JinkoSolar
JKS
$1.22B
| $167K | ﹤0.01% |
+7,727
| New | +$167K |
|
|
EE
728
DELISTED
El Paso Electric Company
EE
| $167K | ﹤0.01% |
+2,561
| New | +$167K |
|
729
iShares MSCI Taiwan ETF
EWT
$6.51B
| $166K | ﹤0.01% |
+4,749
| New | +$166K |
|
730
Puma Biotechnology
PBYI
$229M
| $166K | ﹤0.01% |
13,123
+5,092
| +63% | +$64.4K |
|
|
BHR
731
Braemar Hotels & Resorts
BHR
$199M
| $165K | ﹤0.01% |
16,899
-34,106
| -67% | -$333K |
|
732
EnerSys
ENS
$3.92B
| $165K | ﹤0.01% |
+2,421
| New | +$165K |
|
733
ProShares Ultra Dow30
DDM
$452M
| $164K | ﹤0.01% |
+3,399
| New | +$164K |
|
734
Direxion Daily S&P Oil & Gas Exp & Prod Bull 2X Shares
GUSH
$248M
| $163K | ﹤0.01% |
232
+144
| +164% | +$101K |
|
735
Radian Group
RDN
$4.73B
| $163K | ﹤0.01% |
7,136
-3,958
| -36% | -$90.4K |
|
736
Bankunited
BKU
$2.9B
| $162K | ﹤0.01% |
4,824
+2,403
| +99% | +$80.7K |
|
|
SHLX
737
DELISTED
Shell Midstream Partners, L.P.
SHLX
| $161K | ﹤0.01% |
+7,772
| New | +$161K |
|
|
VRS
738
DELISTED
Verso Corporation
VRS
| $161K | ﹤0.01% |
8,499
+6,402
| +305% | +$121K |
|
|
PE
739
DELISTED
PARSLEY ENERGY INC
PE
| $161K | ﹤0.01% |
8,473
+6,825
| +414% | +$130K |
|
740
Equity Residential
EQR
$25.5B
| $160K | ﹤0.01% |
+2,109
| New | +$160K |
|
741
Vericel Corp
VCEL
$1.69B
| $160K | ﹤0.01% |
8,512
+3,496
| +70% | +$65.7K |
|
742
VanEck Brazil Small-Cap ETF
BRF
$21.8M
| $159K | ﹤0.01% |
6,615
-3,709
| -36% | -$89.2K |
|
743
Sleep Number
SNBR
$234M
| $159K | ﹤0.01% |
3,951
-2,130
| -35% | -$85.7K |
|
744
AeroVironment
AVAV
$12.1B
| $158K | ﹤0.01% |
+2,795
| New | +$158K |
|
745
Microchip Technology
MCHP
$35.1B
| $158K | ﹤0.01% |
3,648
-66,696
| -95% | -$2.89M |
|
746
ProShares UltraShort Bloomberg Natural Gas
KOLD
$193M
| $157K | ﹤0.01% |
515
+236
| +85% | +$71.9K |
|
747
Perrigo
PRGO
$3.04B
| $157K | ﹤0.01% |
+3,303
| New | +$157K |
|
748
Fiserv
FI
$73.8B
| $156K | ﹤0.01% |
1,720
-162
| -9% | -$14.7K |
|
749
Steven Madden
SHOO
$2.22B
| $156K | ﹤0.01% |
4,600
-97
| -2% | -$3.29K |
|
750
United States Brent Oil Fund
BNO
$101M
| $155K | ﹤0.01% |
8,202
+3,140
| +62% | +$59.3K |
|