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 | |
|---|---|---|---|---|---|---|
701
Ezcorp Inc
EZPW
$1.04B
| $692K | ﹤0.01% |
112,301
| – | – |
|
702
Icahn Enterprises
IEP
$4.83B
| $691K | ﹤0.01% |
12,334
-400
| -3% | -$22.4K |
|
|
PLL
703
DELISTED
Piedmont Lithium
PLL
| $691K | ﹤0.01% |
9,008
+200
| +2% | +$15.3K |
|
704
iShares Russell 3000 ETF
IWV
$16.7B
| $690K | ﹤0.01% |
2,683
-100
| -4% | -$25.7K |
|
705
Equinix
EQIX
$74.9B
| $689K | ﹤0.01% |
864
| – | – |
|
706
United States Gasoline Fund
UGA
$76.2M
| $689K | ﹤0.01% |
19,089
+100
| +0.5% | +$3.61K |
|
|
AQUA
707
DELISTED
Evoqua Water Technologies Corp. Common Stock
AQUA
| $689K | ﹤0.01% |
20,435
| – | – |
|
708
ARK Fintech Innovation ETF
ARKF
$1.35B
| $687K | ﹤0.01% |
12,881
+200
| +2% | +$10.7K |
|
709
Quanta Services
PWR
$56B
| $687K | ﹤0.01% |
7,578
| – | – |
|
710
Aptiv
APTV
$17.9B
| $686K | ﹤0.01% |
4,328
| – | – |
|
|
CIM
711
Chimera Investment
CIM
$1.19B
| $686K | ﹤0.01% |
15,159
+328
| +2% | +$14.8K |
|
712
Groupon
GRPN
$920M
| $685K | ﹤0.01% |
15,432
-100
| -0.6% | -$4.44K |
|
|
RDS.B
713
DELISTED
Royal Dutch Shell PLC ADS Class B
RDS.B
| $685K | ﹤0.01% |
17,271
-2,160
| -11% | -$85.7K |
|
714
Invitation Homes
INVH
$18.5B
| $684K | ﹤0.01% |
18,221
-385
| -2% | -$14.5K |
|
715
United States Brent Oil Fund
BNO
$109M
| $680K | ﹤0.01% |
34,935
| – | – |
|
|
GOGL
716
DELISTED
Golden Ocean Group
GOGL
| $680K | ﹤0.01% |
63,881
-700
| -1% | -$7.45K |
|
717
MindMed
MNMD
$714M
| $680K | ﹤0.01% |
13,231
-387
| -3% | -$19.9K |
|
718
Sphere Entertainment
SPHR
$1.96B
| $680K | ﹤0.01% |
8,021
+1
| +0% | +$85 |
|
719
Western Union
WU
$2.82B
| $678K | ﹤0.01% |
29,469
-500
| -2% | -$11.5K |
|
720
Blink Charging
BLNK
$126M
| $666K | ﹤0.01% |
16,747
+1,588
| +10% | +$63.2K |
|
721
Direxion Daily S&P 500 Bear 3x Shares
SPXS
$439M
| $664K | ﹤0.01% |
28,062
-200
| -0.7% | -$4.73K |
|
722
NewtekOne
NEWT
$313M
| $662K | ﹤0.01% |
18,775
+100
| +0.5% | +$3.53K |
|
723
Southern Company
SO
$99.9B
| $660K | ﹤0.01% |
10,739
-500
| -4% | -$30.7K |
|
724
Oscar Health
OSCR
$5.24B
| $659K | ﹤0.01% |
31,026
| – | – |
|
725
Advanced Energy
AEIS
$5.83B
| $657K | ﹤0.01% |
5,920
-1,200
| -17% | -$133K |
|