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 |
Gilead Sciences
GILD
|
+$16.8M |
| 2 |
Apple
AAPL
|
+$16.2M |
| 3 |
Booking.com
BKNG
|
+$15.6M |
| 4 |
Alphabet (Google) Class A
GOOGL
|
+$15.3M |
| 5 |
Wells Fargo
WFC
|
+$11.9M |
Top Sells
| 1 |
SPDR Gold Trust
GLD
|
+$38M |
| 2 |
QIHU
QIHOO 360 TECHNOLOGY CO LTD ADS RPSTG 3 CL A SHS
QIHU
|
+$30.7M |
| 3 |
LNKD
LinkedIn Corporation
LNKD
|
+$15.2M |
| 4 |
CELG
Celgene Corp
CELG
|
+$11.5M |
| 5 |
ProShares Trust UltraShort Lehman 20+ Year Treasury
TBT
|
+$10.5M |
Sector Composition
| 1 | Communication Services | 15.83% |
| 2 | Healthcare | 15.63% |
| 3 | Consumer Discretionary | 12.92% |
| 4 | Technology | 11.44% |
| 5 | Financials | 8.29% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
826
Under Armour
UAA
$2.13B
| $69K | ﹤0.01% |
1,789
-7,211
| -80% | -$278K |
|
|
XIN
827
DELISTED
Xinyuan Real Estate
XIN
| $69K | ﹤0.01% |
1,100
-671
| -38% | -$42.1K |
|
828
Korea Electric Power
KEP
$18.1B
| $68K | ﹤0.01% |
+2,828
| New | +$68K |
|
829
NovaGold Resources
NG
$2.71B
| $68K | ﹤0.01% |
12,229
-16,761
| -58% | -$93.2K |
|
830
VirnetX
VHC
$77.3M
| $68K | ﹤0.01% |
1,125
-626
| -36% | -$37.8K |
|
831
Dynagas LNG Partners
DLNG
$140M
| $67K | ﹤0.01% |
4,362
+1,300
| +42% | +$20K |
|
|
HEES
832
DELISTED
H&E Equipment Services
HEES
| $67K | ﹤0.01% |
+4,054
| New | +$67K |
|
833
Pacira BioSciences
PCRX
$1.19B
| $67K | ﹤0.01% |
1,959
-6,697
| -77% | -$229K |
|
834
Papa John's
PZZA
$1.62B
| $67K | ﹤0.01% |
+861
| New | +$67K |
|
|
TOWR
835
DELISTED
Tower International, Inc.
TOWR
| $67K | ﹤0.01% |
+2,791
| New | +$67K |
|
836
AeroVironment
AVAV
$12B
| $66K | ﹤0.01% |
+2,729
| New | +$66K |
|
|
DBVT
837
DBV Technologies
DBVT
$259M
| $66K | ﹤0.01% |
183
+74
| +68% | +$26.7K |
|
838
Hudbay
HBM
$5.32B
| $66K | ﹤0.01% |
16,681
+5,296
| +47% | +$21K |
|
|
GV
839
DELISTED
Goldfield Corporation
GV
| $66K | ﹤0.01% |
24,765
-20
| -0.1% | -$53 |
|
|
ANFI
840
DELISTED
AMIRA NATURE FOODS LTD
ANFI
| $66K | ﹤0.01% |
7,998
-25,272
| -76% | -$209K |
|
|
KEYW
841
DELISTED
The KEYW Holding Corporation
KEYW
| $66K | ﹤0.01% |
6,027
-24,112
| -80% | -$264K |
|
|
SHLM
842
DELISTED
Schulman (A.) Inc
SHLM
| $66K | ﹤0.01% |
2,291
+1,461
| +176% | +$42.1K |
|
843
Alcoa
AA
$8B
| $65K | ﹤0.01% |
+2,669
| New | +$65K |
|
844
Babcock & Wilcox
BW
$263M
| $65K | ﹤0.01% |
+398
| New | +$65K |
|
845
Groupon
GRPN
$926M
| $65K | ﹤0.01% |
635
+407
| +179% | +$41.7K |
|
846
Imperial Oil
IMO
$46.4B
| $65K | ﹤0.01% |
2,103
-5,515
| -72% | -$170K |
|
|
INVX
847
Innovex International, Inc.
INVX
$1.14B
| $65K | ﹤0.01% |
1,177
+690
| +142% | +$38.1K |
|
|
EVDY
848
DELISTED
Everyday Health, Inc.
EVDY
| $64K | ﹤0.01% |
8,430
+4,476
| +113% | +$34K |
|
|
WOOF
849
DELISTED
VCA Inc.
WOOF
| $63K | ﹤0.01% |
+910
| New | +$63K |
|
850
ProShares Short Dow30
DOG
$123M
| $62K | ﹤0.01% |
+759
| New | +$62K |
|