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 |
Advanced Micro Devices
AMD
|
+$17.7M |
| 2 |
iShares MSCI EAFE ETF
EFA
|
+$10.1M |
| 3 |
NIO
NIO
|
+$7.66M |
| 4 |
Alibaba
BABA
|
+$7.54M |
| 5 |
Micron Technology
MU
|
+$6.73M |
Top Sells
| 1 |
NVIDIA
NVDA
|
+$101M |
| 2 |
SPDR Gold Trust
GLD
|
+$15.2M |
| 3 |
Amazon
AMZN
|
+$9.5M |
| 4 |
SPDR S&P 500 ETF Trust
SPY
|
+$8.76M |
| 5 |
Technology Select Sector SPDR Fund
XLK
|
+$7.41M |
Sector Composition
| 1 | Technology | 18.66% |
| 2 | Consumer Discretionary | 14.99% |
| 3 | Communication Services | 10.06% |
| 4 | Healthcare | 9.68% |
| 5 | Financials | 9.59% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
726
Enterprise Products Partners
EPD
$68.3B
| $657K | ﹤0.01% |
26,876
-9,300
| -26% | -$227K |
|
727
Axon Enterprise
AXON
$57.5B
| $654K | ﹤0.01% |
3,777
+300
| +9% | +$51.9K |
|
728
Playtika
PLTK
$1.43B
| $652K | ﹤0.01% |
28,299
+2,014
| +8% | +$46.4K |
|
729
ProShares Ultra Silver
AGQ
$889M
| $649K | ﹤0.01% |
14,183
| – | – |
|
730
Cincinnati Financial
CINF
$24B
| $648K | ﹤0.01% |
5,497
+600
| +12% | +$70.7K |
|
731
APA Corp
APA
$7.75B
| $647K | ﹤0.01% |
29,521
+8,932
| +43% | +$196K |
|
|
PPD
732
DELISTED
PPD, Inc. Common Stock
PPD
| $646K | ﹤0.01% |
14,022
| – | – |
|
733
Atkore
ATKR
$1.96B
| $644K | ﹤0.01% |
8,967
| – | – |
|
734
Safe Bulkers
SB
$462M
| $636K | ﹤0.01% |
166,161
+9,474
| +6% | +$36.3K |
|
735
Direxion Daily Small Cap Bear 3x Shares
TZA
$292M
| $636K | ﹤0.01% |
22,802
+200
| +0.9% | +$5.58K |
|
736
Vital Energy
VTLE
$606M
| $636K | ﹤0.01% |
6,650
+100
| +2% | +$9.56K |
|
|
SCR
737
DELISTED
Score Media and Gaming Inc. Class A Subordinate Voting Shares
SCR
| $632K | ﹤0.01% |
31,857
+1,500
| +5% | +$29.8K |
|
738
Generation Bio
GBIO
$41.4M
| $631K | ﹤0.01% |
2,303
-137
| -6% | -$37.5K |
|
739
Icon
ICLR
$13.1B
| $630K | ﹤0.01% |
2,921
+508
| +21% | +$110K |
|
740
Fabrinet
FN
$13.2B
| $625K | ﹤0.01% |
6,519
| – | – |
|
741
Williams Companies
WMB
$70.3B
| $624K | ﹤0.01% |
23,319
| – | – |
|
|
CUTR
742
DELISTED
Cutera, Inc.
CUTR
| $624K | ﹤0.01% |
12,666
-800
| -6% | -$39.4K |
|
|
ZGNX
743
DELISTED
Zogenix, Inc.
ZGNX
| $623K | ﹤0.01% |
33,767
-6,560
| -16% | -$121K |
|
|
AAWW
744
DELISTED
Atlas Air Worldwide Holdings, Inc.
AAWW
| $623K | ﹤0.01% |
9,125
-200
| -2% | -$13.7K |
|
745
Ventas
VTR
$31B
| $621K | ﹤0.01% |
10,868
-92
| -0.8% | -$5.26K |
|
746
Vanguard Total Bond Market
BND
$135B
| $619K | ﹤0.01% |
7,222
-100
| -1% | -$8.57K |
|
747
Appian
APPN
$2.42B
| $613K | ﹤0.01% |
4,509
+100
| +2% | +$13.6K |
|
748
NMI Holdings
NMIH
$3.06B
| $611K | ﹤0.01% |
26,896
+1,486
| +6% | +$33.8K |
|
749
Carisma Therapeutics
CARM
$17.3M
| $609K | ﹤0.01% |
6,746
+77
| +1% | +$6.95K |
|
750
SolarEdge
SEDG
$1.78B
| $609K | ﹤0.01% |
2,217
| – | – |
|