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 |
LNKD
LinkedIn Corporation
LNKD
|
+$29.3M |
| 2 |
SPDR Gold Trust
GLD
|
+$18.1M |
| 3 |
QIHU
QIHOO 360 TECHNOLOGY CO LTD ADS RPSTG 3 CL A SHS
QIHU
|
+$14.9M |
| 4 |
Biogen
BIIB
|
+$13.7M |
| 5 |
Visa
V
|
+$13.3M |
Top Sells
| 1 |
Broadcom
AVGO
|
+$37.4M |
| 2 |
Alphabet (Google) Class C
GOOG
|
+$20.1M |
| 3 |
iShares MSCI Emerging Markets ETF
EEM
|
+$15.8M |
| 4 |
Citigroup
C
|
+$13.9M |
| 5 |
SPDR S&P MidCap 400 ETF Trust
MDY
|
+$12.9M |
Sector Composition
| 1 | Communication Services | 12.51% |
| 2 | Healthcare | 12.38% |
| 3 | Technology | 12.22% |
| 4 | Consumer Discretionary | 8.59% |
| 5 | Financials | 8.53% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
726
Technology Select Sector SPDR Fund
XLK
$86.3B
| $92K | 0.01% |
2,134
-6,355
| -75% | -$274K |
|
727
Zebra Technologies
ZBRA
$15.6B
| $92K | 0.01% |
+1,851
| New | +$92K |
|
|
ULTI
728
DELISTED
Ultimate Software Group Inc
ULTI
| $92K | 0.01% |
+441
| New | +$92K |
|
729
Invesco CurrencyShares Swiss Franc Trust
FXF
$377M
| $91K | 0.01% |
932
+90
| +11% | +$8.79K |
|
|
JNP
730
DELISTED
Juniper Pharmaceuticals, Inc. Common Stock
JNP
| $91K | 0.01% |
13,036
+3,045
| +30% | +$21.3K |
|
|
BEAT
731
DELISTED
BioTelemetry, Inc.
BEAT
| $91K | 0.01% |
5,590
+4,839
| +644% | +$78.8K |
|
|
PDLI
732
DELISTED
PDL BioPharma, Inc.
PDLI
| $91K | 0.01% |
+29,241
| New | +$91K |
|
|
DSKY
733
DELISTED
IDREAMSKY TECHNOLOGY LTD ADS REPTSG SHS CL A
DSKY
| $91K | 0.01% |
6,720
-3,937
| -37% | -$53.3K |
|
734
Caesarstone
CSTE
$50.5M
| $90K | 0.01% |
2,616
-227
| -8% | -$7.81K |
|
735
Element Solutions
ESI
$6.24B
| $90K | 0.01% |
10,150
+7,100
| +233% | +$63K |
|
736
Leidos
LDOS
$23.1B
| $90K | 0.01% |
1,896
+1,160
| +158% | +$55.1K |
|
|
PWE
737
DELISTED
Penn West Energy Petroleum Ltd
PWE
| $90K | 0.01% |
64,842
+51,220
| +376% | +$71.1K |
|
|
CPHD
738
DELISTED
Cepheid Inc
CPHD
| $90K | 0.01% |
+2,943
| New | +$90K |
|
739
Credicorp
BAP
$21B
| $89K | 0.01% |
+577
| New | +$89K |
|
740
Banco Bradesco
BBD
$33B
| $89K | 0.01% |
22,065
+9,909
| +82% | +$40K |
|
|
BTCM
741
BIT Mining
BTCM
$49.2M
| $89K | 0.01% |
536
-1,202
| -69% | -$200K |
|
742
LiveRamp
RAMP
$1.74B
| $89K | 0.01% |
4,068
+830
| +26% | +$18.2K |
|
743
Regions Financial
RF
$24.1B
| $89K | 0.01% |
10,544
+9,096
| +628% | +$76.8K |
|
744
Encore Capital Group
ECPG
$993M
| $87K | 0.01% |
3,708
+1,863
| +101% | +$43.7K |
|
745
Lincoln National
LNC
$7.88B
| $87K | 0.01% |
2,267
-546
| -19% | -$21K |
|
746
American Homes 4 Rent
AMH
$12.7B
| $86K | 0.01% |
4,202
+272
| +7% | +$5.57K |
|
747
Credit Acceptance
CACC
$5.8B
| $86K | 0.01% |
+469
| New | +$86K |
|
|
XIN
748
DELISTED
Xinyuan Real Estate
XIN
| $86K | 0.01% |
1,771
+1,616
| +1,043% | +$78.5K |
|
|
LQ
749
DELISTED
La Quinta Holdings Inc.
LQ
| $86K | 0.01% |
7,554
-6,693
| -47% | -$76.2K |
|
750
Magna International
MGA
$12.9B
| $85K | 0.01% |
+2,445
| New | +$85K |
|