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 |
Broadcom
AVGO
|
+$38.5M |
| 2 |
SPDR Gold Trust
GLD
|
+$18.5M |
| 3 |
iShares MSCI Emerging Markets ETF
EEM
|
+$15.8M |
| 4 |
SPDR S&P MidCap 400 ETF Trust
MDY
|
+$12.9M |
| 5 |
QIHU
QIHOO 360 TECHNOLOGY CO LTD ADS RPSTG 3 CL A SHS
QIHU
|
+$8.72M |
Top Sells
| 1 |
Apple
AAPL
|
+$36.1M |
| 2 |
GMCR
KEURIG GREEN MTN INC
GMCR
|
+$17.9M |
| 3 |
Chipotle Mexican Grill
CMG
|
+$14.9M |
| 4 |
Walt Disney
DIS
|
+$14.5M |
| 5 |
Alibaba
BABA
|
+$13.3M |
Sector Composition
| 1 | Technology | 15.08% |
| 2 | Communication Services | 13.51% |
| 3 | Consumer Discretionary | 9.68% |
| 4 | Healthcare | 8.98% |
| 5 | Financials | 8.3% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
676
ProShares Ultra Gold
UGL
$741M
| $87K | 0.01% |
8,860
-27,548
| -76% | -$271K |
|
|
MDP
677
DELISTED
Meredith Corporation
MDP
| $87K | 0.01% |
1,834
+1,485
| +426% | +$70.4K |
|
|
GLUU
678
DELISTED
Glu Mobile Inc.
GLUU
| $87K | 0.01% |
31,166
+15,862
| +104% | +$44.3K |
|
679
GATX Corp
GATX
$6.11B
| $86K | 0.01% |
1,826
-2,543
| -58% | -$120K |
|
680
Sony
SONY
$174B
| $86K | 0.01% |
16,910
-830
| -5% | -$4.22K |
|
|
MB
681
DELISTED
MINDBODY, Inc. Class A Common Stock
MB
| $86K | 0.01% |
+6,495
| New | +$86K |
|
682
FerroAtlántica
GSM
$795M
| $85K | 0.01% |
9,693
+6,920
| +250% | +$60.7K |
|
|
KG
683
Kestrel Group, Ltd.
KG
$203M
| $85K | 0.01% |
+330
| New | +$85K |
|
684
Oceaneering
OII
$2.48B
| $85K | 0.01% |
+2,582
| New | +$85K |
|
685
Energous
WATT
$11.1M
| $85K | 0.01% |
14
+12
| +600% | +$72.9K |
|
|
ENOC
686
DELISTED
EnerNOC, Inc.
ENOC
| $85K | 0.01% |
11,445
+7,043
| +160% | +$52.3K |
|
687
Builders FirstSource
BLDR
$16.2B
| $84K | 0.01% |
+7,496
| New | +$84K |
|
688
DigitalBridge
DBRG
$2.24B
| $84K | 0.01% |
1,870
-4,707
| -72% | -$211K |
|
689
First Trust NYSE Arca Biotechnology Index Fund
FBT
$1.09B
| $84K | 0.01% |
+967
| New | +$84K |
|
690
Invesco CurrencyShares Swiss Franc Trust
FXF
$378M
| $84K | 0.01% |
842
-1,814
| -68% | -$181K |
|
691
Power Integrations
POWI
$2.56B
| $84K | 0.01% |
+3,414
| New | +$84K |
|
692
Sonoco
SON
$4.66B
| $84K | 0.01% |
+1,750
| New | +$84K |
|
693
VirnetX
VHC
$74.6M
| $84K | 0.01% |
923
-883
| -49% | -$80.4K |
|
694
Dine Brands
DIN
$372M
| $83K | 0.01% |
+889
| New | +$83K |
|
695
EOG Resources
EOG
$65.5B
| $83K | 0.01% |
+1,154
| New | +$83K |
|
696
MaxLinear
MXL
$1.4B
| $83K | 0.01% |
4,527
+193
| +4% | +$3.54K |
|
697
U-Haul Holding Co
UHAL
$11B
| $83K | 0.01% |
2,330
+2,010
| +628% | +$71.6K |
|
|
CSH
698
DELISTED
CASH AMERICA INTERNATIONAL INC
CSH
| $83K | 0.01% |
2,162
+1,950
| +920% | +$74.9K |
|
|
AGEN
699
Agenus
AGEN
$151M
| $82K | 0.01% |
1,006
+307
| +44% | +$25K |
|
700
AutoNation
AN
$8.56B
| $82K | 0.01% |
1,773
+485
| +38% | +$22.4K |
|